WebSVN – Kolibri OS – Diff – /drivers/video/Intel-2D/kgem.c


/*
 * Copyright (c) 2011 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Authors:
 *    Chris Wilson 
 *
 */
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
 
#include "sna.h"
#include "sna_reg.h"
 
#include 
#include 
#include 
 
#ifdef HAVE_VALGRIND
#include 
#include 
#endif
 
#ifdef HAVE_STRUCT_SYSINFO_TOTALRAM
#include 
#endif
 
#include "sna_cpuid.h"
 
static struct kgem_bo *
search_linear_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags);
 
static struct kgem_bo *
search_snoop_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags);
 
#define DBG_NO_HW 0
#define DBG_NO_TILING 0
#define DBG_NO_CACHE 0
#define DBG_NO_CACHE_LEVEL 0
#define DBG_NO_CPU 0
#define DBG_NO_CREATE2 1
#define DBG_NO_USERPTR 0
#define DBG_NO_UNSYNCHRONIZED_USERPTR 0
#define DBG_NO_LLC 0
#define DBG_NO_SEMAPHORES 0
#define DBG_NO_MADV 1
#define DBG_NO_UPLOAD_CACHE 0
#define DBG_NO_UPLOAD_ACTIVE 0
#define DBG_NO_MAP_UPLOAD 0
#define DBG_NO_RELAXED_FENCING 0
#define DBG_NO_SECURE_BATCHES 0
#define DBG_NO_PINNED_BATCHES 0
#define DBG_NO_FAST_RELOC 0
#define DBG_NO_HANDLE_LUT 1
#define DBG_NO_WT 0
#define DBG_DUMP 0
 
#define FORCE_MMAP_SYNC 0 /* ((1 << DOMAIN_CPU) | (1 << DOMAIN_GTT)) */
 
#ifndef DEBUG_SYNC
#define DEBUG_SYNC 0
#endif
 
 
#if 0
#define ASSERT_IDLE(kgem__, handle__) assert(!__kgem_busy(kgem__, handle__))
#define ASSERT_MAYBE_IDLE(kgem__, handle__, expect__) assert(!(expect__) || !__kgem_busy(kgem__, handle__))
#else
#define ASSERT_IDLE(kgem__, handle__)
#define ASSERT_MAYBE_IDLE(kgem__, handle__, expect__)
#endif
 
/* Worst case seems to be 965gm where we cannot write within a cacheline that
 * is being simultaneously being read by the GPU, or within the sampler
 * prefetch. In general, the chipsets seem to have a requirement that sampler
 * offsets be aligned to a cacheline (64 bytes).
 */
#define UPLOAD_ALIGNMENT 128
 
#define PAGE_ALIGN(x) ALIGN(x, PAGE_SIZE)
#define NUM_PAGES(x) (((x) + PAGE_SIZE-1) / PAGE_SIZE)
 
#define MAX_GTT_VMA_CACHE 512
#define MAX_CPU_VMA_CACHE INT16_MAX
#define MAP_PRESERVE_TIME 10
 
#define MAKE_CPU_MAP(ptr) ((void*)((uintptr_t)(ptr) | 1))
#define MAKE_USER_MAP(ptr) ((void*)((uintptr_t)(ptr) | 3))
#define IS_USER_MAP(ptr) ((uintptr_t)(ptr) & 2)
#define __MAP_TYPE(ptr) ((uintptr_t)(ptr) & 3)
 
#define MAKE_REQUEST(rq, ring) ((struct kgem_request *)((uintptr_t)(rq) | (ring)))
 
#define LOCAL_I915_PARAM_HAS_BLT		        11
#define LOCAL_I915_PARAM_HAS_RELAXED_FENCING	12
#define LOCAL_I915_PARAM_HAS_RELAXED_DELTA	    15
#define LOCAL_I915_PARAM_HAS_SEMAPHORES		    20
#define LOCAL_I915_PARAM_HAS_SECURE_BATCHES	    23
#define LOCAL_I915_PARAM_HAS_PINNED_BATCHES	    24
#define LOCAL_I915_PARAM_HAS_NO_RELOC		    25
#define LOCAL_I915_PARAM_HAS_HANDLE_LUT		    26
#define LOCAL_I915_PARAM_HAS_WT			27
 
#define LOCAL_I915_EXEC_IS_PINNED		(1<<10)
#define LOCAL_I915_EXEC_NO_RELOC		(1<<11)
#define LOCAL_I915_EXEC_HANDLE_LUT		(1<<12)
struct local_i915_gem_userptr {
	uint64_t user_ptr;
	uint64_t user_size;
	uint32_t flags;
#define I915_USERPTR_READ_ONLY (1<<0)
#define I915_USERPTR_UNSYNCHRONIZED (1<<31)
	uint32_t handle;
};
 
#define UNCACHED	0
#define SNOOPED		1
#define DISPLAY		2
 
struct local_i915_gem_caching {
	uint32_t handle;
	uint32_t caching;
};
 
#define LOCAL_IOCTL_I915_GEM_SET_CACHING SRV_I915_GEM_SET_CACHING
 
struct local_fbinfo {
	int width;
	int height;
	int pitch;
	int tiling;
};
 
struct kgem_buffer {
	struct kgem_bo base;
	void *mem;
	uint32_t used;
	uint32_t need_io : 1;
	uint32_t write : 2;
	uint32_t mmapped : 1;
};
 
static struct kgem_bo *__kgem_freed_bo;
static struct kgem_request *__kgem_freed_request;
static struct drm_i915_gem_exec_object2 _kgem_dummy_exec;
 
static inline int bytes(struct kgem_bo *bo)
{
	return __kgem_bo_size(bo);
}
 
#define bucket(B) (B)->size.pages.bucket
#define num_pages(B) (B)->size.pages.count
 
#ifdef DEBUG_MEMORY
static void debug_alloc(struct kgem *kgem, size_t size)
{
	kgem->debug_memory.bo_allocs++;
	kgem->debug_memory.bo_bytes += size;
}
static void debug_alloc__bo(struct kgem *kgem, struct kgem_bo *bo)
{
	debug_alloc(kgem, bytes(bo));
}
#else
#define debug_alloc(k, b)
#define debug_alloc__bo(k, b)
#endif
 
#ifndef NDEBUG
static void assert_tiling(struct kgem *kgem, struct kgem_bo *bo)
{
	struct drm_i915_gem_get_tiling tiling;
 
	assert(bo);
 
	VG_CLEAR(tiling);
	tiling.handle = bo->handle;
	tiling.tiling_mode = -1;
	(void)drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_GET_TILING, &tiling);
	assert(tiling.tiling_mode == bo->tiling);
}
#else
#define assert_tiling(kgem, bo)
#endif
 
static void kgem_sna_reset(struct kgem *kgem)
{
	struct sna *sna = container_of(kgem, struct sna, kgem);
 
	sna->render.reset(sna);
	sna->blt_state.fill_bo = 0;
}
 
static void kgem_sna_flush(struct kgem *kgem)
{
	struct sna *sna = container_of(kgem, struct sna, kgem);
 
	sna->render.flush(sna);
 
//	if (sna->render.solid_cache.dirty)
//		sna_render_flush_solid(sna);
}
 
static bool gem_set_tiling(int fd, uint32_t handle, int tiling, int stride)
{
	struct drm_i915_gem_set_tiling set_tiling;
	int ret;
 
	if (DBG_NO_TILING)
		return false;
 
	VG_CLEAR(set_tiling);
	do {
		set_tiling.handle = handle;
		set_tiling.tiling_mode = tiling;
		set_tiling.stride = stride;
 
		ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
	} while (ret != 0);
	return ret == 0;
}
 
static bool gem_set_caching(int fd, uint32_t handle, int caching)
{
	struct local_i915_gem_caching arg;
 
	VG_CLEAR(arg);
	arg.handle = handle;
	arg.caching = caching;
	return drmIoctl(fd, LOCAL_IOCTL_I915_GEM_SET_CACHING, &arg) == 0;
}
 
 
 
 
 
static bool __kgem_throttle_retire(struct kgem *kgem, unsigned flags)
{
	if (flags & CREATE_NO_RETIRE) {
		DBG(("%s: not retiring per-request\n", __FUNCTION__));
		return false;
	}
 
	if (!kgem->need_retire) {
		DBG(("%s: nothing to retire\n", __FUNCTION__));
		return false;
	}
 
	if (kgem_retire(kgem))
		return true;
 
	if (flags & CREATE_NO_THROTTLE || !kgem->need_throttle) {
		DBG(("%s: not throttling\n", __FUNCTION__));
		return false;
	}
 
	kgem_throttle(kgem);
	return kgem_retire(kgem);
}
 
static void *__kgem_bo_map__gtt(struct kgem *kgem, struct kgem_bo *bo)
{
	struct drm_i915_gem_mmap_gtt mmap_arg;
	void *ptr;
 
	DBG(("%s(handle=%d, size=%d)\n", __FUNCTION__,
	     bo->handle, bytes(bo)));
	assert(bo->proxy == NULL);
	assert(!bo->snoop);
	assert(kgem_bo_can_map(kgem, bo));
 
retry_gtt:
	VG_CLEAR(mmap_arg);
	mmap_arg.handle = bo->handle;
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg)) {
 
		(void)__kgem_throttle_retire(kgem, 0);
		if (kgem_expire_cache(kgem))
			goto retry_gtt;
 
		if (kgem->need_expire) {
			kgem_cleanup_cache(kgem);
			goto retry_gtt;
		}
 
		printf("%s: failed to retrieve GTT offset for handle=%d\n",
		       __FUNCTION__, bo->handle);
		return NULL;
	}
 
retry_mmap:
	ptr = (void*)(int)mmap_arg.offset;
	if (ptr == NULL) {
		ErrorF("%s: failed to mmap handle=%d, %d bytes, into GTT domain\n",
		       __FUNCTION__, bo->handle, bytes(bo));
		ptr = NULL;
	}
 
	return ptr;
}
 
static int __gem_write(int fd, uint32_t handle,
		       int offset, int length,
		       const void *src)
{
	struct drm_i915_gem_pwrite pwrite;
 
	DBG(("%s(handle=%d, offset=%d, len=%d)\n", __FUNCTION__,
	     handle, offset, length));
 
	VG_CLEAR(pwrite);
	pwrite.handle = handle;
	pwrite.offset = offset;
	pwrite.size = length;
	pwrite.data_ptr = (uintptr_t)src;
	return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
}
 
static int gem_write(int fd, uint32_t handle,
		     int offset, int length,
		     const void *src)
{
	struct drm_i915_gem_pwrite pwrite;
 
	DBG(("%s(handle=%d, offset=%d, len=%d)\n", __FUNCTION__,
	     handle, offset, length));
 
	VG_CLEAR(pwrite);
	pwrite.handle = handle;
	/* align the transfer to cachelines; fortuitously this is safe! */
	if ((offset | length) & 63) {
		pwrite.offset = offset & ~63;
		pwrite.size = ALIGN(offset+length, 64) - pwrite.offset;
		pwrite.data_ptr = (uintptr_t)src + pwrite.offset - offset;
	} else {
		pwrite.offset = offset;
		pwrite.size = length;
		pwrite.data_ptr = (uintptr_t)src;
	}
	return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
}
 
 
bool __kgem_busy(struct kgem *kgem, int handle)
{
	struct drm_i915_gem_busy busy;
 
	VG_CLEAR(busy);
	busy.handle = handle;
	busy.busy = !kgem->wedged;
	(void)drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy);
	DBG(("%s: handle=%d, busy=%d, wedged=%d\n",
	     __FUNCTION__, handle, busy.busy, kgem->wedged));
 
	return busy.busy;
}
 
static void kgem_bo_retire(struct kgem *kgem, struct kgem_bo *bo)
{
	DBG(("%s: retiring bo handle=%d (needed flush? %d), rq? %d [busy?=%d]\n",
	     __FUNCTION__, bo->handle, bo->needs_flush, bo->rq != NULL,
	     __kgem_busy(kgem, bo->handle)));
	assert(bo->exec == NULL);
	assert(list_is_empty(&bo->vma));
 
	if (bo->rq) {
		if (!__kgem_busy(kgem, bo->handle)) {
			__kgem_bo_clear_busy(bo);
			kgem_retire(kgem);
		}
	} else {
		assert(!bo->needs_flush);
		ASSERT_IDLE(kgem, bo->handle);
	}
}
 
bool kgem_bo_write(struct kgem *kgem, struct kgem_bo *bo,
		   const void *data, int length)
{
	assert(bo->refcnt);
	assert(!bo->purged);
	assert(bo->proxy == NULL);
	ASSERT_IDLE(kgem, bo->handle);
 
	assert(length <= bytes(bo));
	if (gem_write(kgem->fd, bo->handle, 0, length, data))
		return false;
 
	DBG(("%s: flush=%d, domain=%d\n", __FUNCTION__, bo->flush, bo->domain));
	if (bo->exec == NULL) {
		kgem_bo_retire(kgem, bo);
		bo->domain = DOMAIN_NONE;
	}
	bo->gtt_dirty = true;
	return true;
}
 
static uint32_t gem_create(int fd, int num_pages)
{
	struct drm_i915_gem_create create;
 
	VG_CLEAR(create);
	create.handle = 0;
	create.size = PAGE_SIZE * num_pages;
	(void)drmIoctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create);
 
	return create.handle;
}
 
static bool
kgem_bo_set_purgeable(struct kgem *kgem, struct kgem_bo *bo)
{
#if DBG_NO_MADV
	return true;
#else
	struct drm_i915_gem_madvise madv;
 
	assert(bo->exec == NULL);
	assert(!bo->purged);
 
	VG_CLEAR(madv);
	madv.handle = bo->handle;
	madv.madv = I915_MADV_DONTNEED;
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0) {
		bo->purged = 1;
		kgem->need_purge |= !madv.retained && bo->domain == DOMAIN_GPU;
		return madv.retained;
	}
 
	return true;
#endif
}
 
static bool
kgem_bo_is_retained(struct kgem *kgem, struct kgem_bo *bo)
{
#if DBG_NO_MADV
	return true;
#else
	struct drm_i915_gem_madvise madv;
 
	if (!bo->purged)
		return true;
 
	VG_CLEAR(madv);
	madv.handle = bo->handle;
	madv.madv = I915_MADV_DONTNEED;
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0)
		return madv.retained;
 
	return false;
#endif
}
 
static bool
kgem_bo_clear_purgeable(struct kgem *kgem, struct kgem_bo *bo)
{
#if DBG_NO_MADV
	return true;
#else
	struct drm_i915_gem_madvise madv;
 
	assert(bo->purged);
 
	VG_CLEAR(madv);
	madv.handle = bo->handle;
	madv.madv = I915_MADV_WILLNEED;
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0) {
		bo->purged = !madv.retained;
		kgem->need_purge |= !madv.retained && bo->domain == DOMAIN_GPU;
		return madv.retained;
	}
 
	return false;
#endif
}
 
static void gem_close(int fd, uint32_t handle)
{
	struct drm_gem_close close;
 
	VG_CLEAR(close);
	close.handle = handle;
	(void)drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &close);
}
 
constant inline static unsigned long __fls(unsigned long word)
{
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86__) || defined(__x86_64__))
	asm("bsr %1,%0"
	    : "=r" (word)
	    : "rm" (word));
	return word;
#else
	unsigned int v = 0;
 
	while (word >>= 1)
		v++;
 
	return v;
#endif
}
 
constant inline static int cache_bucket(int num_pages)
{
	return __fls(num_pages);
}
 
static struct kgem_bo *__kgem_bo_init(struct kgem_bo *bo,
				      int handle, int num_pages)
{
	assert(num_pages);
	memset(bo, 0, sizeof(*bo));
 
	bo->refcnt = 1;
	bo->handle = handle;
	bo->target_handle = -1;
	num_pages(bo) = num_pages;
	bucket(bo) = cache_bucket(num_pages);
	bo->reusable = true;
	bo->domain = DOMAIN_CPU;
	list_init(&bo->request);
	list_init(&bo->list);
	list_init(&bo->vma);
 
	return bo;
}
 
static struct kgem_bo *__kgem_bo_alloc(int handle, int num_pages)
{
	struct kgem_bo *bo;
 
	if (__kgem_freed_bo) {
		bo = __kgem_freed_bo;
		__kgem_freed_bo = *(struct kgem_bo **)bo;
	} else {
		bo = malloc(sizeof(*bo));
		if (bo == NULL)
			return NULL;
	}
 
	return __kgem_bo_init(bo, handle, num_pages);
}
 
static struct kgem_request *__kgem_request_alloc(struct kgem *kgem)
{
	struct kgem_request *rq;
 
	rq = __kgem_freed_request;
	if (rq) {
		__kgem_freed_request = *(struct kgem_request **)rq;
	} else {
		rq = malloc(sizeof(*rq));
		if (rq == NULL)
			rq = &kgem->static_request;
	}
 
	list_init(&rq->buffers);
	rq->bo = NULL;
	rq->ring = 0;
 
	return rq;
}
 
static void __kgem_request_free(struct kgem_request *rq)
{
	_list_del(&rq->list);
	*(struct kgem_request **)rq = __kgem_freed_request;
	__kgem_freed_request = rq;
}
 
static struct list *inactive(struct kgem *kgem, int num_pages)
{
	assert(num_pages < MAX_CACHE_SIZE / PAGE_SIZE);
	assert(cache_bucket(num_pages) < NUM_CACHE_BUCKETS);
	return &kgem->inactive[cache_bucket(num_pages)];
}
 
static struct list *active(struct kgem *kgem, int num_pages, int tiling)
{
	assert(num_pages < MAX_CACHE_SIZE / PAGE_SIZE);
	assert(cache_bucket(num_pages) < NUM_CACHE_BUCKETS);
	return &kgem->active[cache_bucket(num_pages)][tiling];
}
 
static size_t
agp_aperture_size(struct pci_device *dev, unsigned gen)
{
	/* XXX assume that only future chipsets are unknown and follow
	 * the post gen2 PCI layout.
	 */
    return 0;
}
 
static size_t
total_ram_size(void)
{
    uint32_t  data[9];
    size_t    size = 0;
 
    asm volatile("int $0x40"
        : "=a" (size)
        : "a" (18),"b"(20), "c" (data)
        : "memory");
 
    return size != -1 ? size : 0;
}
 
static unsigned
cpu_cache_size__cpuid4(void)
{
	/* Deterministic Cache Parmaeters (Function 04h)":
	 *    When EAX is initialized to a value of 4, the CPUID instruction
	 *    returns deterministic cache information in the EAX, EBX, ECX
	 *    and EDX registers.  This function requires ECX be initialized
	 *    with an index which indicates which cache to return information
	 *    about. The OS is expected to call this function (CPUID.4) with
	 *    ECX = 0, 1, 2, until EAX[4:0] == 0, indicating no more caches.
	 *    The order in which the caches are returned is not specified
	 *    and may change at Intel's discretion.
	 *
	 * Calculating the Cache Size in bytes:
	 *          = (Ways +1) * (Partitions +1) * (Line Size +1) * (Sets +1)
	 */
 
	 unsigned int eax, ebx, ecx, edx;
	 unsigned int llc_size = 0;
	 int cnt = 0;
 
	 if (__get_cpuid_max(BASIC_CPUID, NULL) < 4)
		 return 0;
 
	 do {
		 unsigned associativity, line_partitions, line_size, sets;
 
		 __cpuid_count(4, cnt++, eax, ebx, ecx, edx);
 
		 if ((eax & 0x1f) == 0)
			 break;
 
		 associativity = ((ebx >> 22) & 0x3ff) + 1;
		 line_partitions = ((ebx >> 12) & 0x3ff) + 1;
		 line_size = (ebx & 0xfff) + 1;
		 sets = ecx + 1;
 
		 llc_size = associativity * line_partitions * line_size * sets;
	 } while (1);
 
	 return llc_size;
}
 
static int gem_param(struct kgem *kgem, int name)
{
    drm_i915_getparam_t gp;
    int v = -1; /* No param uses the sign bit, reserve it for errors */
 
    VG_CLEAR(gp);
    gp.param = name;
    gp.value = &v;
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GETPARAM, &gp))
        return -1;
 
    VG(VALGRIND_MAKE_MEM_DEFINED(&v, sizeof(v)));
    return v;
}
 
static bool test_has_execbuffer2(struct kgem *kgem)
{
	return 1;
}
 
static bool test_has_no_reloc(struct kgem *kgem)
{
	if (DBG_NO_FAST_RELOC)
		return false;
 
	return gem_param(kgem, LOCAL_I915_PARAM_HAS_NO_RELOC) > 0;
}
 
static bool test_has_handle_lut(struct kgem *kgem)
{
	if (DBG_NO_HANDLE_LUT)
		return false;
 
	return gem_param(kgem, LOCAL_I915_PARAM_HAS_HANDLE_LUT) > 0;
}
 
static bool test_has_wt(struct kgem *kgem)
{
	if (DBG_NO_WT)
		return false;
 
	return gem_param(kgem, LOCAL_I915_PARAM_HAS_WT) > 0;
}
 
static bool test_has_semaphores_enabled(struct kgem *kgem)
{
	bool detected = false;
	int ret;
 
	if (DBG_NO_SEMAPHORES)
		return false;
 
	ret = gem_param(kgem, LOCAL_I915_PARAM_HAS_SEMAPHORES);
	if (ret != -1)
		return ret > 0;
 
	return detected;
}
 
static bool __kgem_throttle(struct kgem *kgem)
{
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_THROTTLE, NULL) == 0)
		return false;
 
	return errno == EIO;
}
 
static bool is_hw_supported(struct kgem *kgem,
			    struct pci_device *dev)
{
	if (DBG_NO_HW)
		return false;
 
	if (!test_has_execbuffer2(kgem))
		return false;
 
	if (kgem->gen == (unsigned)-1) /* unknown chipset, assume future gen */
		return kgem->has_blt;
 
	/* Although pre-855gm the GMCH is fubar, it works mostly. So
	 * let the user decide through "NoAccel" whether or not to risk
	 * hw acceleration.
	 */
 
	if (kgem->gen == 060 && dev->revision < 8) {
		/* pre-production SNB with dysfunctional BLT */
		return false;
	}
 
	if (kgem->gen >= 060) /* Only if the kernel supports the BLT ring */
		return kgem->has_blt;
 
	return true;
}
 
static bool test_has_relaxed_fencing(struct kgem *kgem)
{
	if (kgem->gen < 040) {
		if (DBG_NO_RELAXED_FENCING)
			return false;
 
		return gem_param(kgem, LOCAL_I915_PARAM_HAS_RELAXED_FENCING) > 0;
	} else
		return true;
}
 
static bool test_has_llc(struct kgem *kgem)
{
	int has_llc = -1;
 
	if (DBG_NO_LLC)
		return false;
 
#if defined(I915_PARAM_HAS_LLC) /* Expected in libdrm-2.4.31 */
	has_llc = gem_param(kgem, I915_PARAM_HAS_LLC);
#endif
	if (has_llc == -1) {
		DBG(("%s: no kernel/drm support for HAS_LLC, assuming support for LLC based on GPU generation\n", __FUNCTION__));
		has_llc = kgem->gen >= 060;
	}
 
	return has_llc;
}
 
static bool test_has_caching(struct kgem *kgem)
{
	uint32_t handle;
	bool ret;
 
	if (DBG_NO_CACHE_LEVEL)
		return false;
 
	/* Incoherent blt and sampler hangs the GPU */
	if (kgem->gen == 040)
		return false;
 
	handle = gem_create(kgem->fd, 1);
	if (handle == 0)
		return false;
 
	ret = gem_set_caching(kgem->fd, handle, UNCACHED);
	gem_close(kgem->fd, handle);
	return ret;
}
 
static bool test_has_userptr(struct kgem *kgem)
{
#if defined(USE_USERPTR)
	uint32_t handle;
	void *ptr;
 
	if (DBG_NO_USERPTR)
		return false;
 
	/* Incoherent blt and sampler hangs the GPU */
	if (kgem->gen == 040)
		return false;
 
	if (posix_memalign(&ptr, PAGE_SIZE, PAGE_SIZE))
		return false;
 
	handle = gem_userptr(kgem->fd, ptr, PAGE_SIZE, false);
	gem_close(kgem->fd, handle);
	free(ptr);
 
	return handle != 0;
#else
	return false;
#endif
}
 
static bool test_has_create2(struct kgem *kgem)
{
#if defined(USE_CREATE2)
	struct local_i915_gem_create2 args;
 
	if (DBG_NO_CREATE2)
		return false;
 
	memset(&args, 0, sizeof(args));
	args.size = PAGE_SIZE;
	args.caching = DISPLAY;
	if (drmIoctl(kgem->fd, LOCAL_IOCTL_I915_GEM_CREATE2, &args) == 0)
		gem_close(kgem->fd, args.handle);
 
	return args.handle != 0;
#else
	return false;
#endif
}
 
static bool test_has_secure_batches(struct kgem *kgem)
{
	if (DBG_NO_SECURE_BATCHES)
		return false;
 
	return gem_param(kgem, LOCAL_I915_PARAM_HAS_SECURE_BATCHES) > 0;
}
 
static bool test_has_pinned_batches(struct kgem *kgem)
{
	if (DBG_NO_PINNED_BATCHES)
		return false;
 
	return gem_param(kgem, LOCAL_I915_PARAM_HAS_PINNED_BATCHES) > 0;
}
 
 
static bool kgem_init_pinned_batches(struct kgem *kgem)
{
	int count[2] = { 2, 1 };
	int size[2] = { 1, 2 };
	int n, i;
 
	if (kgem->wedged)
		return true;
 
	for (n = 0; n < ARRAY_SIZE(count); n++) {
		for (i = 0; i < count[n]; i++) {
			struct drm_i915_gem_pin pin;
			struct kgem_bo *bo;
 
			VG_CLEAR(pin);
 
			pin.handle = gem_create(kgem->fd, size[n]);
			if (pin.handle == 0)
				goto err;
 
			DBG(("%s: new handle=%d, num_pages=%d\n",
			     __FUNCTION__, pin.handle, size[n]));
 
			bo = __kgem_bo_alloc(pin.handle, size[n]);
			if (bo == NULL) {
				gem_close(kgem->fd, pin.handle);
				goto err;
			}
 
			pin.alignment = 0;
			if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_PIN, &pin)) {
				gem_close(kgem->fd, pin.handle);
				goto err;
			}
			bo->presumed_offset = pin.offset;
			debug_alloc__bo(kgem, bo);
			list_add(&bo->list, &kgem->pinned_batches[n]);
		}
	}
 
	return true;
 
err:
	for (n = 0; n < ARRAY_SIZE(kgem->pinned_batches); n++) {
		while (!list_is_empty(&kgem->pinned_batches[n])) {
			kgem_bo_destroy(kgem,
					list_first_entry(&kgem->pinned_batches[n],
							 struct kgem_bo, list));
		}
	}
 
	/* For simplicity populate the lists with a single unpinned bo */
	for (n = 0; n < ARRAY_SIZE(count); n++) {
		struct kgem_bo *bo;
		uint32_t handle;
 
		handle = gem_create(kgem->fd, size[n]);
		if (handle == 0)
			break;
 
		bo = __kgem_bo_alloc(handle, size[n]);
		if (bo == NULL) {
			gem_close(kgem->fd, handle);
			break;
		}
 
		debug_alloc__bo(kgem, bo);
		list_add(&bo->list, &kgem->pinned_batches[n]);
	}
	return false;
}
 
void kgem_init(struct kgem *kgem, int fd, struct pci_device *dev, unsigned gen)
{
    struct drm_i915_gem_get_aperture aperture;
    size_t totalram;
    unsigned half_gpu_max;
    unsigned int i, j;
 
    DBG(("%s: fd=%d, gen=%d\n", __FUNCTION__, fd, gen));
 
    memset(kgem, 0, sizeof(*kgem));
 
    kgem->fd = fd;
    kgem->gen = gen;
 
    list_init(&kgem->requests[0]);
    list_init(&kgem->requests[1]);
    list_init(&kgem->batch_buffers);
    list_init(&kgem->active_buffers);
    list_init(&kgem->flushing);
    list_init(&kgem->large);
    list_init(&kgem->large_inactive);
    list_init(&kgem->snoop);
    list_init(&kgem->scanout);
    for (i = 0; i < ARRAY_SIZE(kgem->pinned_batches); i++)
        list_init(&kgem->pinned_batches[i]);
    for (i = 0; i < ARRAY_SIZE(kgem->inactive); i++)
        list_init(&kgem->inactive[i]);
    for (i = 0; i < ARRAY_SIZE(kgem->active); i++) {
        for (j = 0; j < ARRAY_SIZE(kgem->active[i]); j++)
            list_init(&kgem->active[i][j]);
    }
    for (i = 0; i < ARRAY_SIZE(kgem->vma); i++) {
        for (j = 0; j < ARRAY_SIZE(kgem->vma[i].inactive); j++)
            list_init(&kgem->vma[i].inactive[j]);
    }
    kgem->vma[MAP_GTT].count = -MAX_GTT_VMA_CACHE;
    kgem->vma[MAP_CPU].count = -MAX_CPU_VMA_CACHE;
 
    kgem->has_blt = gem_param(kgem, LOCAL_I915_PARAM_HAS_BLT) > 0;
    DBG(("%s: has BLT ring? %d\n", __FUNCTION__,
         kgem->has_blt));
 
    kgem->has_relaxed_delta =
        gem_param(kgem, LOCAL_I915_PARAM_HAS_RELAXED_DELTA) > 0;
    DBG(("%s: has relaxed delta? %d\n", __FUNCTION__,
         kgem->has_relaxed_delta));
 
    kgem->has_relaxed_fencing = test_has_relaxed_fencing(kgem);
    DBG(("%s: has relaxed fencing? %d\n", __FUNCTION__,
         kgem->has_relaxed_fencing));
 
    kgem->has_llc = test_has_llc(kgem);
    DBG(("%s: has shared last-level-cache? %d\n", __FUNCTION__,
         kgem->has_llc));
 
	kgem->has_wt = test_has_wt(kgem);
	DBG(("%s: has write-through caching for scanouts? %d\n", __FUNCTION__,
	     kgem->has_wt));
 
	kgem->has_caching = test_has_caching(kgem);
    DBG(("%s: has set-cache-level? %d\n", __FUNCTION__,
	     kgem->has_caching));
 
    kgem->has_userptr = test_has_userptr(kgem);
    DBG(("%s: has userptr? %d\n", __FUNCTION__,
         kgem->has_userptr));
 
	kgem->has_create2 = test_has_create2(kgem);
	kgem->has_create2 = 0;
	DBG(("%s: has create2? %d\n", __FUNCTION__,
	     kgem->has_create2));
 
    kgem->has_no_reloc = test_has_no_reloc(kgem);
    DBG(("%s: has no-reloc? %d\n", __FUNCTION__,
         kgem->has_no_reloc));
 
    kgem->has_handle_lut = test_has_handle_lut(kgem);
    kgem->has_handle_lut = 0;
    DBG(("%s: has handle-lut? %d\n", __FUNCTION__,
         kgem->has_handle_lut));
 
    kgem->has_semaphores = false;
    if (kgem->has_blt && test_has_semaphores_enabled(kgem))
        kgem->has_semaphores = true;
    DBG(("%s: semaphores enabled? %d\n", __FUNCTION__,
         kgem->has_semaphores));
 
    kgem->can_blt_cpu = gen >= 030;
    DBG(("%s: can blt to cpu? %d\n", __FUNCTION__,
         kgem->can_blt_cpu));
 
    kgem->has_secure_batches = test_has_secure_batches(kgem);
    DBG(("%s: can use privileged batchbuffers? %d\n", __FUNCTION__,
         kgem->has_secure_batches));
 
    kgem->has_pinned_batches = test_has_pinned_batches(kgem);
    DBG(("%s: can use pinned batchbuffers (to avoid CS w/a)? %d\n", __FUNCTION__,
         kgem->has_pinned_batches));
 
    if (!is_hw_supported(kgem, dev)) {
        printf("Detected unsupported/dysfunctional hardware, disabling acceleration.\n");
        kgem->wedged = 1;
    } else if (__kgem_throttle(kgem)) {
        printf("Detected a hung GPU, disabling acceleration.\n");
        kgem->wedged = 1;
    }
 
    kgem->batch_size = ARRAY_SIZE(kgem->batch);
    if (gen == 020 && !kgem->has_pinned_batches)
        /* Limited to what we can pin */
        kgem->batch_size = 4*1024;
    if (gen == 022)
        /* 865g cannot handle a batch spanning multiple pages */
        kgem->batch_size = PAGE_SIZE / sizeof(uint32_t);
    if ((gen >> 3) == 7)
        kgem->batch_size = 16*1024;
    if (!kgem->has_relaxed_delta && kgem->batch_size > 4*1024)
        kgem->batch_size = 4*1024;
 
    if (!kgem_init_pinned_batches(kgem) && gen == 020) {
        printf("Unable to reserve memory for GPU, disabling acceleration.\n");
        kgem->wedged = 1;
    }
 
    DBG(("%s: maximum batch size? %d\n", __FUNCTION__,
         kgem->batch_size));
 
	kgem->min_alignment = 4;
    if (gen < 040)
        kgem->min_alignment = 64;
 
    kgem->half_cpu_cache_pages = cpu_cache_size() >> 13;
	DBG(("%s: last-level cache size: %d bytes, threshold in pages: %d\n",
	     __FUNCTION__, cpu_cache_size(), kgem->half_cpu_cache_pages));
 
    kgem->next_request = __kgem_request_alloc(kgem);
 
    DBG(("%s: cpu bo enabled %d: llc? %d, set-cache-level? %d, userptr? %d\n", __FUNCTION__,
	     !DBG_NO_CPU && (kgem->has_llc | kgem->has_userptr | kgem->has_caching),
	     kgem->has_llc, kgem->has_caching, kgem->has_userptr));
 
    VG_CLEAR(aperture);
    aperture.aper_size = 0;
	(void)drmIoctl(fd, DRM_IOCTL_I915_GEM_GET_APERTURE, &aperture);
    if (aperture.aper_size == 0)
        aperture.aper_size = 64*1024*1024;
 
    DBG(("%s: aperture size %lld, available now %lld\n",
         __FUNCTION__,
         (long long)aperture.aper_size,
         (long long)aperture.aper_available_size));
 
    kgem->aperture_total = aperture.aper_size;
    kgem->aperture_high = aperture.aper_size * 3/4;
    kgem->aperture_low = aperture.aper_size * 1/3;
    if (gen < 033) {
        /* Severe alignment penalties */
        kgem->aperture_high /= 2;
        kgem->aperture_low /= 2;
    }
    DBG(("%s: aperture low=%d [%d], high=%d [%d]\n", __FUNCTION__,
         kgem->aperture_low, kgem->aperture_low / (1024*1024),
         kgem->aperture_high, kgem->aperture_high / (1024*1024)));
 
    kgem->aperture_mappable = agp_aperture_size(dev, gen);
    if (kgem->aperture_mappable == 0 ||
        kgem->aperture_mappable > aperture.aper_size)
        kgem->aperture_mappable = aperture.aper_size;
    DBG(("%s: aperture mappable=%d [%d MiB]\n", __FUNCTION__,
         kgem->aperture_mappable, kgem->aperture_mappable / (1024*1024)));
 
    kgem->buffer_size = 64 * 1024;
    while (kgem->buffer_size < kgem->aperture_mappable >> 10)
        kgem->buffer_size *= 2;
    if (kgem->buffer_size >> 12 > kgem->half_cpu_cache_pages)
        kgem->buffer_size = kgem->half_cpu_cache_pages << 12;
	kgem->buffer_size = 1 << __fls(kgem->buffer_size);
    DBG(("%s: buffer size=%d [%d KiB]\n", __FUNCTION__,
         kgem->buffer_size, kgem->buffer_size / 1024));
	assert(kgem->buffer_size);
 
    kgem->max_object_size = 3 * (kgem->aperture_high >> 12) << 10;
    kgem->max_gpu_size = kgem->max_object_size;
	if (!kgem->has_llc && kgem->max_gpu_size > MAX_CACHE_SIZE)
        kgem->max_gpu_size = MAX_CACHE_SIZE;
 
    totalram = total_ram_size();
    if (totalram == 0) {
        DBG(("%s: total ram size unknown, assuming maximum of total aperture\n",
             __FUNCTION__));
        totalram = kgem->aperture_total;
    }
	DBG(("%s: total ram=%ld\n", __FUNCTION__, (long)totalram));
    if (kgem->max_object_size > totalram / 2)
        kgem->max_object_size = totalram / 2;
    if (kgem->max_gpu_size > totalram / 4)
        kgem->max_gpu_size = totalram / 4;
 
    kgem->max_cpu_size = kgem->max_object_size;
 
    half_gpu_max = kgem->max_gpu_size / 2;
    kgem->max_copy_tile_size = (MAX_CACHE_SIZE + 1)/2;
    if (kgem->max_copy_tile_size > half_gpu_max)
        kgem->max_copy_tile_size = half_gpu_max;
 
    if (kgem->has_llc)
        kgem->max_upload_tile_size = kgem->max_copy_tile_size;
    else
        kgem->max_upload_tile_size = kgem->aperture_mappable / 4;
    if (kgem->max_upload_tile_size > half_gpu_max)
        kgem->max_upload_tile_size = half_gpu_max;
	if (kgem->max_upload_tile_size > kgem->aperture_high/2)
		kgem->max_upload_tile_size = kgem->aperture_high/2;
	if (kgem->max_upload_tile_size > kgem->aperture_low)
		kgem->max_upload_tile_size = kgem->aperture_low;
	if (kgem->max_upload_tile_size < 16*PAGE_SIZE)
		kgem->max_upload_tile_size = 16*PAGE_SIZE;
 
    kgem->large_object_size = MAX_CACHE_SIZE;
	if (kgem->large_object_size > half_gpu_max)
		kgem->large_object_size = half_gpu_max;
	if (kgem->max_copy_tile_size > kgem->aperture_high/2)
		kgem->max_copy_tile_size = kgem->aperture_high/2;
	if (kgem->max_copy_tile_size > kgem->aperture_low)
		kgem->max_copy_tile_size = kgem->aperture_low;
	if (kgem->max_copy_tile_size < 16*PAGE_SIZE)
		kgem->max_copy_tile_size = 16*PAGE_SIZE;
 
	if (kgem->has_llc | kgem->has_caching | kgem->has_userptr) {
        if (kgem->large_object_size > kgem->max_cpu_size)
            kgem->large_object_size = kgem->max_cpu_size;
    } else
        kgem->max_cpu_size = 0;
    if (DBG_NO_CPU)
        kgem->max_cpu_size = 0;
 
    DBG(("%s: maximum object size=%d\n",
         __FUNCTION__, kgem->max_object_size));
    DBG(("%s: large object thresold=%d\n",
         __FUNCTION__, kgem->large_object_size));
    DBG(("%s: max object sizes (gpu=%d, cpu=%d, tile upload=%d, copy=%d)\n",
         __FUNCTION__,
         kgem->max_gpu_size, kgem->max_cpu_size,
         kgem->max_upload_tile_size, kgem->max_copy_tile_size));
 
    /* Convert the aperture thresholds to pages */
    kgem->aperture_low /= PAGE_SIZE;
    kgem->aperture_high /= PAGE_SIZE;
 
    kgem->fence_max = gem_param(kgem, I915_PARAM_NUM_FENCES_AVAIL) - 2;
    if ((int)kgem->fence_max < 0)
        kgem->fence_max = 5; /* minimum safe value for all hw */
    DBG(("%s: max fences=%d\n", __FUNCTION__, kgem->fence_max));
 
    kgem->batch_flags_base = 0;
    if (kgem->has_no_reloc)
        kgem->batch_flags_base |= LOCAL_I915_EXEC_NO_RELOC;
    if (kgem->has_handle_lut)
        kgem->batch_flags_base |= LOCAL_I915_EXEC_HANDLE_LUT;
    if (kgem->has_pinned_batches)
        kgem->batch_flags_base |= LOCAL_I915_EXEC_IS_PINNED;
}
 
/* XXX hopefully a good approximation */
uint32_t kgem_get_unique_id(struct kgem *kgem)
{
	uint32_t id;
	id = ++kgem->unique_id;
	if (id == 0)
		id = ++kgem->unique_id;
	return id;
}
 
inline static uint32_t kgem_pitch_alignment(struct kgem *kgem, unsigned flags)
{
	if (flags & CREATE_PRIME)
		return 256;
	if (flags & CREATE_SCANOUT)
		return 64;
	return kgem->min_alignment;
}
 
void kgem_get_tile_size(struct kgem *kgem, int tiling,
			int *tile_width, int *tile_height, int *tile_size)
{
	if (kgem->gen <= 030) {
		if (tiling) {
			if (kgem->gen < 030) {
				*tile_width = 128;
				*tile_height = 16;
				*tile_size = 2048;
			} else {
				*tile_width = 512;
				*tile_height = 8;
				*tile_size = 4096;
			}
		} else {
			*tile_width = 1;
			*tile_height = 1;
			*tile_size = 1;
		}
	} else switch (tiling) {
	default:
	case I915_TILING_NONE:
		*tile_width = 1;
		*tile_height = 1;
		*tile_size = 1;
		break;
	case I915_TILING_X:
		*tile_width = 512;
		*tile_height = 8;
		*tile_size = 4096;
		break;
	case I915_TILING_Y:
		*tile_width = 128;
		*tile_height = 32;
		*tile_size = 4096;
		break;
	}
}
 
uint32_t kgem_surface_size(struct kgem *kgem,
				  bool relaxed_fencing,
				  unsigned flags,
				  uint32_t width,
				  uint32_t height,
				  uint32_t bpp,
				  uint32_t tiling,
				  uint32_t *pitch)
{
	uint32_t tile_width, tile_height;
	uint32_t size;
 
	assert(width <= MAXSHORT);
	assert(height <= MAXSHORT);
	assert(bpp >= 8);
 
	if (kgem->gen <= 030) {
		if (tiling) {
			if (kgem->gen < 030) {
				tile_width = 128;
				tile_height = 32;
			} else {
				tile_width = 512;
				tile_height = 16;
			}
		} else {
			tile_width = 2 * bpp >> 3;
			tile_width = ALIGN(tile_width,
					   kgem_pitch_alignment(kgem, flags));
			tile_height = 2;
		}
	} else switch (tiling) {
	default:
	case I915_TILING_NONE:
		tile_width = 2 * bpp >> 3;
		tile_width = ALIGN(tile_width,
				   kgem_pitch_alignment(kgem, flags));
		tile_height = 2;
		break;
 
		/* XXX align to an even tile row */
	case I915_TILING_X:
		tile_width = 512;
		tile_height = 16;
		break;
	case I915_TILING_Y:
		tile_width = 128;
		tile_height = 64;
		break;
	}
 
	*pitch = ALIGN(width * bpp / 8, tile_width);
	height = ALIGN(height, tile_height);
	if (kgem->gen >= 040)
		return PAGE_ALIGN(*pitch * height);
 
	/* If it is too wide for the blitter, don't even bother.  */
	if (tiling != I915_TILING_NONE) {
		if (*pitch > 8192)
			return 0;
 
		for (size = tile_width; size < *pitch; size <<= 1)
			;
		*pitch = size;
	} else {
		if (*pitch >= 32768)
			return 0;
	}
 
	size = *pitch * height;
	if (relaxed_fencing || tiling == I915_TILING_NONE)
		return PAGE_ALIGN(size);
 
	/*  We need to allocate a pot fence region for a tiled buffer. */
	if (kgem->gen < 030)
		tile_width = 512 * 1024;
	else
		tile_width = 1024 * 1024;
	while (tile_width < size)
		tile_width *= 2;
	return tile_width;
}
 
static uint32_t kgem_aligned_height(struct kgem *kgem,
				    uint32_t height, uint32_t tiling)
{
	uint32_t tile_height;
 
	if (kgem->gen <= 030) {
		tile_height = tiling ? kgem->gen < 030 ? 32 : 16 : 1;
	} else switch (tiling) {
		/* XXX align to an even tile row */
	default:
	case I915_TILING_NONE:
		tile_height = 1;
		break;
	case I915_TILING_X:
		tile_height = 16;
		break;
	case I915_TILING_Y:
		tile_height = 64;
		break;
	}
 
	return ALIGN(height, tile_height);
}
 
static struct drm_i915_gem_exec_object2 *
kgem_add_handle(struct kgem *kgem, struct kgem_bo *bo)
{
	struct drm_i915_gem_exec_object2 *exec;
 
	DBG(("%s: handle=%d, index=%d\n",
	     __FUNCTION__, bo->handle, kgem->nexec));
 
	assert(kgem->nexec < ARRAY_SIZE(kgem->exec));
	bo->target_handle = kgem->has_handle_lut ? kgem->nexec : bo->handle;
	exec = memset(&kgem->exec[kgem->nexec++], 0, sizeof(*exec));
	exec->handle = bo->handle;
	exec->offset = bo->presumed_offset;
 
	kgem->aperture += num_pages(bo);
 
	return exec;
}
 
static void kgem_add_bo(struct kgem *kgem, struct kgem_bo *bo)
{
	bo->exec = kgem_add_handle(kgem, bo);
	bo->rq = MAKE_REQUEST(kgem->next_request, kgem->ring);
 
	list_move_tail(&bo->request, &kgem->next_request->buffers);
 
	/* XXX is it worth working around gcc here? */
	kgem->flush |= bo->flush;
}
 
static uint32_t kgem_end_batch(struct kgem *kgem)
{
	kgem->batch[kgem->nbatch++] = MI_BATCH_BUFFER_END;
	if (kgem->nbatch & 1)
		kgem->batch[kgem->nbatch++] = MI_NOOP;
 
	return kgem->nbatch;
}
 
static void kgem_fixup_self_relocs(struct kgem *kgem, struct kgem_bo *bo)
{
	int n;
 
	assert(kgem->nreloc__self <= 256);
	if (kgem->nreloc__self == 0)
		return;
 
	for (n = 0; n < kgem->nreloc__self; n++) {
		int i = kgem->reloc__self[n];
		assert(kgem->reloc[i].target_handle == ~0U);
		kgem->reloc[i].target_handle = bo->target_handle;
		kgem->reloc[i].presumed_offset = bo->presumed_offset;
		kgem->batch[kgem->reloc[i].offset/sizeof(kgem->batch[0])] =
			kgem->reloc[i].delta + bo->presumed_offset;
	}
 
	if (n == 256) {
		for (n = kgem->reloc__self[255]; n < kgem->nreloc; n++) {
			if (kgem->reloc[n].target_handle == ~0U) {
				kgem->reloc[n].target_handle = bo->target_handle;
				kgem->reloc[n].presumed_offset = bo->presumed_offset;
				kgem->batch[kgem->reloc[n].offset/sizeof(kgem->batch[0])] =
					kgem->reloc[n].delta + bo->presumed_offset;
			}
		}
 
	}
 
}
 
static void kgem_bo_binding_free(struct kgem *kgem, struct kgem_bo *bo)
{
	struct kgem_bo_binding *b;
 
	b = bo->binding.next;
	while (b) {
		struct kgem_bo_binding *next = b->next;
		free (b);
		b = next;
	}
}
 
static void kgem_bo_release_map(struct kgem *kgem, struct kgem_bo *bo)
{
	int type = IS_CPU_MAP(bo->map);
 
	assert(!IS_USER_MAP(bo->map));
 
	DBG(("%s: releasing %s vma for handle=%d, count=%d\n",
	     __FUNCTION__, type ? "CPU" : "GTT",
	     bo->handle, kgem->vma[type].count));
 
	VG(if (type) VALGRIND_MAKE_MEM_NOACCESS(MAP(bo->map), bytes(bo)));
	user_free(MAP(bo->map));
	bo->map = NULL;
 
	if (!list_is_empty(&bo->vma)) {
		list_del(&bo->vma);
		kgem->vma[type].count--;
	}
}
 
static void kgem_bo_free(struct kgem *kgem, struct kgem_bo *bo)
{
	DBG(("%s: handle=%d\n", __FUNCTION__, bo->handle));
	assert(bo->refcnt == 0);
	assert(bo->proxy == NULL);
	assert(bo->exec == NULL);
	assert(!bo->snoop || bo->rq == NULL);
 
#ifdef DEBUG_MEMORY
	kgem->debug_memory.bo_allocs--;
	kgem->debug_memory.bo_bytes -= bytes(bo);
#endif
 
	kgem_bo_binding_free(kgem, bo);
 
	if (IS_USER_MAP(bo->map)) {
		assert(bo->rq == NULL);
		assert(!__kgem_busy(kgem, bo->handle));
		assert(MAP(bo->map) != bo || bo->io || bo->flush);
		if (!(bo->io || bo->flush)) {
			DBG(("%s: freeing snooped base\n", __FUNCTION__));
			assert(bo != MAP(bo->map));
			free(MAP(bo->map));
		}
		bo->map = NULL;
	}
	if (bo->map)
		kgem_bo_release_map(kgem, bo);
	assert(list_is_empty(&bo->vma));
	assert(bo->map == NULL);
 
	_list_del(&bo->list);
	_list_del(&bo->request);
	gem_close(kgem->fd, bo->handle);
 
	if (!bo->io) {
		*(struct kgem_bo **)bo = __kgem_freed_bo;
		__kgem_freed_bo = bo;
	} else
		free(bo);
}
 
inline static void kgem_bo_move_to_inactive(struct kgem *kgem,
					    struct kgem_bo *bo)
{
	DBG(("%s: moving handle=%d to inactive\n", __FUNCTION__, bo->handle));
 
	assert(bo->refcnt == 0);
	assert(bo->reusable);
	assert(bo->rq == NULL);
	assert(bo->exec == NULL);
	assert(bo->domain != DOMAIN_GPU);
	assert(!bo->proxy);
	assert(!bo->io);
	assert(!bo->scanout);
	assert(!bo->snoop);
	assert(!bo->flush);
	assert(!bo->needs_flush);
	assert(list_is_empty(&bo->vma));
	assert_tiling(kgem, bo);
	ASSERT_IDLE(kgem, bo->handle);
 
	kgem->need_expire = true;
 
	if (bucket(bo) >= NUM_CACHE_BUCKETS) {
		list_move(&bo->list, &kgem->large_inactive);
		return;
	}
 
	assert(bo->flush == false);
	list_move(&bo->list, &kgem->inactive[bucket(bo)]);
	if (bo->map) {
		int type = IS_CPU_MAP(bo->map);
		if (bucket(bo) >= NUM_CACHE_BUCKETS ||
		    (!type && !__kgem_bo_is_mappable(kgem, bo))) {
//			munmap(MAP(bo->map), bytes(bo));
			bo->map = NULL;
		}
		if (bo->map) {
			list_add(&bo->vma, &kgem->vma[type].inactive[bucket(bo)]);
			kgem->vma[type].count++;
		}
	}
}
 
static struct kgem_bo *kgem_bo_replace_io(struct kgem_bo *bo)
{
	struct kgem_bo *base;
 
	if (!bo->io)
		return bo;
 
	assert(!bo->snoop);
	base = malloc(sizeof(*base));
	if (base) {
		DBG(("%s: transferring io handle=%d to bo\n",
		     __FUNCTION__, bo->handle));
		/* transfer the handle to a minimum bo */
		memcpy(base, bo, sizeof(*base));
		base->io = false;
		list_init(&base->list);
		list_replace(&bo->request, &base->request);
		list_replace(&bo->vma, &base->vma);
		free(bo);
		bo = base;
	} else
		bo->reusable = false;
 
	return bo;
}
 
inline static void kgem_bo_remove_from_inactive(struct kgem *kgem,
						struct kgem_bo *bo)
{
	DBG(("%s: removing handle=%d from inactive\n", __FUNCTION__, bo->handle));
 
	list_del(&bo->list);
	assert(bo->rq == NULL);
	assert(bo->exec == NULL);
	if (bo->map) {
		assert(!list_is_empty(&bo->vma));
		list_del(&bo->vma);
		kgem->vma[IS_CPU_MAP(bo->map)].count--;
	}
}
 
inline static void kgem_bo_remove_from_active(struct kgem *kgem,
					      struct kgem_bo *bo)
{
	DBG(("%s: removing handle=%d from active\n", __FUNCTION__, bo->handle));
 
	list_del(&bo->list);
	assert(bo->rq != NULL);
	if (bo->rq == (void *)kgem)
		list_del(&bo->request);
	assert(list_is_empty(&bo->vma));
}
 
static void _kgem_bo_delete_buffer(struct kgem *kgem, struct kgem_bo *bo)
{
	struct kgem_buffer *io = (struct kgem_buffer *)bo->proxy;
 
	DBG(("%s: size=%d, offset=%d, parent used=%d\n",
	     __FUNCTION__, bo->size.bytes, bo->delta, io->used));
 
	if (ALIGN(bo->delta + bo->size.bytes, UPLOAD_ALIGNMENT) == io->used)
		io->used = bo->delta;
}
 
static void kgem_bo_move_to_scanout(struct kgem *kgem, struct kgem_bo *bo)
{
	assert(bo->refcnt == 0);
	assert(bo->scanout);
	assert(bo->delta);
	assert(!bo->flush);
	assert(!bo->snoop);
	assert(!bo->io);
 
	if (bo->purged) {
		DBG(("%s: discarding purged scanout - external name?\n",
		     __FUNCTION__));
		kgem_bo_free(kgem, bo);
		return;
	}
 
	DBG(("%s: moving %d [fb %d] to scanout cache, active? %d\n",
	     __FUNCTION__, bo->handle, bo->delta, bo->rq != NULL));
	if (bo->rq)
		list_move_tail(&bo->list, &kgem->scanout);
	else
	list_move(&bo->list, &kgem->scanout);
}
 
static void kgem_bo_move_to_snoop(struct kgem *kgem, struct kgem_bo *bo)
{
	assert(bo->reusable);
	assert(!bo->flush);
	assert(!bo->needs_flush);
	assert(bo->refcnt == 0);
	assert(bo->exec == NULL);
 
	if (num_pages(bo) > kgem->max_cpu_size >> 13) {
		DBG(("%s handle=%d discarding large CPU buffer (%d >%d pages)\n",
		     __FUNCTION__, bo->handle, num_pages(bo), kgem->max_cpu_size >> 13));
		kgem_bo_free(kgem, bo);
		return;
	}
 
	assert(bo->tiling == I915_TILING_NONE);
	assert(bo->rq == NULL);
 
	DBG(("%s: moving %d to snoop cachee\n", __FUNCTION__, bo->handle));
	list_add(&bo->list, &kgem->snoop);
}
 
static struct kgem_bo *
search_snoop_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags)
{
	struct kgem_bo *bo, *first = NULL;
 
	DBG(("%s: num_pages=%d, flags=%x\n", __FUNCTION__, num_pages, flags));
 
	if ((kgem->has_caching | kgem->has_userptr) == 0)
		return NULL;
 
	if (list_is_empty(&kgem->snoop)) {
		DBG(("%s: inactive and cache empty\n", __FUNCTION__));
		if (!__kgem_throttle_retire(kgem, flags)) {
			DBG(("%s: nothing retired\n", __FUNCTION__));
			return NULL;
		}
	}
 
	list_for_each_entry(bo, &kgem->snoop, list) {
		assert(bo->refcnt == 0);
		assert(bo->snoop);
		assert(!bo->scanout);
		assert(!bo->purged);
		assert(bo->proxy == NULL);
		assert(bo->tiling == I915_TILING_NONE);
		assert(bo->rq == NULL);
		assert(bo->exec == NULL);
 
		if (num_pages > num_pages(bo))
			continue;
 
		if (num_pages(bo) > 2*num_pages) {
			if (first == NULL)
				first = bo;
			continue;
		}
 
		list_del(&bo->list);
		bo->pitch = 0;
		bo->delta = 0;
 
		DBG(("  %s: found handle=%d (num_pages=%d) in snoop cache\n",
		     __FUNCTION__, bo->handle, num_pages(bo)));
		return bo;
	}
 
	if (first) {
		list_del(&first->list);
		first->pitch = 0;
		first->delta = 0;
 
		DBG(("  %s: found handle=%d (num_pages=%d) in snoop cache\n",
		     __FUNCTION__, first->handle, num_pages(first)));
		return first;
	}
 
	return NULL;
}
 
void kgem_bo_undo(struct kgem *kgem, struct kgem_bo *bo)
{
	if (kgem->nexec != 1 || bo->exec == NULL)
		return;
 
	DBG(("%s: only handle in batch, discarding last operations for handle=%d\n",
	     __FUNCTION__, bo->handle));
 
	assert(bo->exec == &kgem->exec[0]);
	assert(kgem->exec[0].handle == bo->handle);
	assert(RQ(bo->rq) == kgem->next_request);
 
	bo->refcnt++;
	kgem_reset(kgem);
	bo->refcnt--;
}
 
static void __kgem_bo_destroy(struct kgem *kgem, struct kgem_bo *bo)
{
	DBG(("%s: handle=%d\n", __FUNCTION__, bo->handle));
 
	assert(list_is_empty(&bo->list));
	assert(bo->refcnt == 0);
	assert(!bo->purged || !bo->reusable);
	assert(bo->proxy == NULL);
	assert_tiling(kgem, bo);
 
	bo->binding.offset = 0;
 
	if (DBG_NO_CACHE)
		goto destroy;
 
	if (bo->snoop && !bo->flush) {
		DBG(("%s: handle=%d is snooped\n", __FUNCTION__, bo->handle));
		assert(bo->reusable);
		assert(list_is_empty(&bo->list));
		if (bo->exec == NULL && bo->rq && !__kgem_busy(kgem, bo->handle))
			__kgem_bo_clear_busy(bo);
		if (bo->rq == NULL)
			kgem_bo_move_to_snoop(kgem, bo);
		return;
	}
	if (!IS_USER_MAP(bo->map))
		bo->flush = false;
 
	if (bo->scanout) {
		kgem_bo_move_to_scanout(kgem, bo);
		return;
	}
 
	if (bo->io)
		bo = kgem_bo_replace_io(bo);
	if (!bo->reusable) {
		DBG(("%s: handle=%d, not reusable\n",
		     __FUNCTION__, bo->handle));
		goto destroy;
	}
 
	if (!kgem->has_llc && IS_CPU_MAP(bo->map) && bo->domain != DOMAIN_CPU)
		kgem_bo_release_map(kgem, bo);
 
	assert(list_is_empty(&bo->vma));
	assert(list_is_empty(&bo->list));
	assert(bo->flush == false);
	assert(bo->snoop == false);
	assert(bo->io == false);
	assert(bo->scanout == false);
 
	kgem_bo_undo(kgem, bo);
	assert(bo->refcnt == 0);
 
	if (bo->rq && bo->exec == NULL && !__kgem_busy(kgem, bo->handle))
		__kgem_bo_clear_busy(bo);
 
	if (bo->rq) {
		struct list *cache;
 
		DBG(("%s: handle=%d -> active\n", __FUNCTION__, bo->handle));
		if (bucket(bo) < NUM_CACHE_BUCKETS)
			cache = &kgem->active[bucket(bo)][bo->tiling];
		else
			cache = &kgem->large;
		list_add(&bo->list, cache);
		return;
	}
 
	assert(bo->exec == NULL);
	assert(list_is_empty(&bo->request));
 
	if (!IS_CPU_MAP(bo->map)) {
		if (!kgem_bo_set_purgeable(kgem, bo))
			goto destroy;
 
		if (!kgem->has_llc && bo->domain == DOMAIN_CPU)
			goto destroy;
 
		DBG(("%s: handle=%d, purged\n",
		     __FUNCTION__, bo->handle));
	}
 
	kgem_bo_move_to_inactive(kgem, bo);
	return;
 
destroy:
	if (!bo->exec)
		kgem_bo_free(kgem, bo);
}
 
static void kgem_bo_unref(struct kgem *kgem, struct kgem_bo *bo)
{
	assert(bo->refcnt);
	if (--bo->refcnt == 0)
		__kgem_bo_destroy(kgem, bo);
}
 
static void kgem_buffer_release(struct kgem *kgem, struct kgem_buffer *bo)
{
	while (!list_is_empty(&bo->base.vma)) {
		struct kgem_bo *cached;
 
		cached = list_first_entry(&bo->base.vma, struct kgem_bo, vma);
		assert(cached->proxy == &bo->base);
		list_del(&cached->vma);
 
		assert(*(struct kgem_bo **)cached->map == cached);
		*(struct kgem_bo **)cached->map = NULL;
		cached->map = NULL;
 
		kgem_bo_destroy(kgem, cached);
	}
}
 
static bool kgem_retire__buffers(struct kgem *kgem)
{
	bool retired = false;
 
	while (!list_is_empty(&kgem->active_buffers)) {
		struct kgem_buffer *bo =
			list_last_entry(&kgem->active_buffers,
					struct kgem_buffer,
					base.list);
 
		if (bo->base.rq)
			break;
 
		DBG(("%s: releasing upload cache for handle=%d? %d\n",
		     __FUNCTION__, bo->base.handle, !list_is_empty(&bo->base.vma)));
		list_del(&bo->base.list);
		kgem_buffer_release(kgem, bo);
		kgem_bo_unref(kgem, &bo->base);
		retired = true;
	}
 
	return retired;
}
 
static bool kgem_retire__flushing(struct kgem *kgem)
{
	struct kgem_bo *bo, *next;
	bool retired = false;
 
	list_for_each_entry_safe(bo, next, &kgem->flushing, request) {
		assert(bo->rq == (void *)kgem);
		assert(bo->exec == NULL);
 
		if (__kgem_busy(kgem, bo->handle))
			break;
 
		__kgem_bo_clear_busy(bo);
 
		if (bo->refcnt)
			continue;
 
		if (bo->snoop) {
			kgem_bo_move_to_snoop(kgem, bo);
		} else if (bo->scanout) {
			kgem_bo_move_to_scanout(kgem, bo);
		} else if ((bo = kgem_bo_replace_io(bo))->reusable &&
			   kgem_bo_set_purgeable(kgem, bo)) {
			kgem_bo_move_to_inactive(kgem, bo);
			retired = true;
		} else
			kgem_bo_free(kgem, bo);
	}
#if HAS_DEBUG_FULL
	{
		int count = 0;
		list_for_each_entry(bo, &kgem->flushing, request)
			count++;
		ErrorF("%s: %d bo on flushing list\n", __FUNCTION__, count);
	}
#endif
 
	kgem->need_retire |= !list_is_empty(&kgem->flushing);
 
	return retired;
}
 
 
static bool __kgem_retire_rq(struct kgem *kgem, struct kgem_request *rq)
{
	bool retired = false;
 
	DBG(("%s: request %d complete\n",
	     __FUNCTION__, rq->bo->handle));
 
	while (!list_is_empty(&rq->buffers)) {
		struct kgem_bo *bo;
 
		bo = list_first_entry(&rq->buffers,
				      struct kgem_bo,
				      request);
 
		assert(RQ(bo->rq) == rq);
		assert(bo->exec == NULL);
		assert(bo->domain == DOMAIN_GPU || bo->domain == DOMAIN_NONE);
 
		list_del(&bo->request);
 
		if (bo->needs_flush)
			bo->needs_flush = __kgem_busy(kgem, bo->handle);
		if (bo->needs_flush) {
			DBG(("%s: moving %d to flushing\n",
			     __FUNCTION__, bo->handle));
			list_add(&bo->request, &kgem->flushing);
			bo->rq = (void *)kgem;
			continue;
		}
 
		bo->domain = DOMAIN_NONE;
		bo->rq = NULL;
		if (bo->refcnt)
			continue;
 
		if (bo->snoop) {
			kgem_bo_move_to_snoop(kgem, bo);
		} else if (bo->scanout) {
			kgem_bo_move_to_scanout(kgem, bo);
		} else if ((bo = kgem_bo_replace_io(bo))->reusable &&
			   kgem_bo_set_purgeable(kgem, bo)) {
			kgem_bo_move_to_inactive(kgem, bo);
			retired = true;
		} else {
			DBG(("%s: closing %d\n",
			     __FUNCTION__, bo->handle));
			kgem_bo_free(kgem, bo);
		}
	}
 
	assert(rq->bo->rq == NULL);
	assert(list_is_empty(&rq->bo->request));
 
	if (--rq->bo->refcnt == 0) {
		if (kgem_bo_set_purgeable(kgem, rq->bo)) {
			kgem_bo_move_to_inactive(kgem, rq->bo);
			retired = true;
		} else {
			DBG(("%s: closing %d\n",
			     __FUNCTION__, rq->bo->handle));
			kgem_bo_free(kgem, rq->bo);
		}
	}
 
	__kgem_request_free(rq);
	return retired;
}
 
static bool kgem_retire__requests_ring(struct kgem *kgem, int ring)
{
	bool retired = false;
 
	while (!list_is_empty(&kgem->requests[ring])) {
		struct kgem_request *rq;
 
		rq = list_first_entry(&kgem->requests[ring],
				      struct kgem_request,
				      list);
		if (__kgem_busy(kgem, rq->bo->handle))
			break;
 
		retired |= __kgem_retire_rq(kgem, rq);
	}
 
#if HAS_DEBUG_FULL
	{
		struct kgem_bo *bo;
		int count = 0;
 
		list_for_each_entry(bo, &kgem->requests[ring], request)
			count++;
 
		bo = NULL;
		if (!list_is_empty(&kgem->requests[ring]))
			bo = list_first_entry(&kgem->requests[ring],
					      struct kgem_request,
					      list)->bo;
 
		ErrorF("%s: ring=%d, %d outstanding requests, oldest=%d\n",
		       __FUNCTION__, ring, count, bo ? bo->handle : 0);
	}
#endif
 
	return retired;
}
 
static bool kgem_retire__requests(struct kgem *kgem)
{
	bool retired = false;
	int n;
 
	for (n = 0; n < ARRAY_SIZE(kgem->requests); n++) {
		retired |= kgem_retire__requests_ring(kgem, n);
		kgem->need_retire |= !list_is_empty(&kgem->requests[n]);
	}
 
	return retired;
}
 
bool kgem_retire(struct kgem *kgem)
{
	bool retired = false;
 
	DBG(("%s\n", __FUNCTION__));
 
	kgem->need_retire = false;
 
	retired |= kgem_retire__flushing(kgem);
	retired |= kgem_retire__requests(kgem);
	retired |= kgem_retire__buffers(kgem);
 
	DBG(("%s -- retired=%d, need_retire=%d\n",
	     __FUNCTION__, retired, kgem->need_retire));
 
	kgem->retire(kgem);
 
	return retired;
}
 
bool __kgem_ring_is_idle(struct kgem *kgem, int ring)
{
	struct kgem_request *rq;
 
	assert(!list_is_empty(&kgem->requests[ring]));
 
	rq = list_last_entry(&kgem->requests[ring],
			     struct kgem_request, list);
	if (__kgem_busy(kgem, rq->bo->handle)) {
		DBG(("%s: last requests handle=%d still busy\n",
		     __FUNCTION__, rq->bo->handle));
		return false;
	}
 
	DBG(("%s: ring=%d idle (handle=%d)\n",
	     __FUNCTION__, ring, rq->bo->handle));
 
	kgem_retire__requests_ring(kgem, ring);
	assert(list_is_empty(&kgem->requests[ring]));
	return true;
}
 
static void kgem_commit(struct kgem *kgem)
{
	struct kgem_request *rq = kgem->next_request;
	struct kgem_bo *bo, *next;
 
	list_for_each_entry_safe(bo, next, &rq->buffers, request) {
		assert(next->request.prev == &bo->request);
 
		DBG(("%s: release handle=%d (proxy? %d), dirty? %d flush? %d, snoop? %d -> offset=%x\n",
		     __FUNCTION__, bo->handle, bo->proxy != NULL,
		     bo->gpu_dirty, bo->needs_flush, bo->snoop,
		     (unsigned)bo->exec->offset));
 
		assert(bo->exec);
		assert(bo->proxy == NULL || bo->exec == &_kgem_dummy_exec);
		assert(RQ(bo->rq) == rq || (RQ(bo->proxy->rq) == rq));
 
		bo->presumed_offset = bo->exec->offset;
		bo->exec = NULL;
		bo->target_handle = -1;
 
		if (!bo->refcnt && !bo->reusable) {
			assert(!bo->snoop);
			kgem_bo_free(kgem, bo);
			continue;
		}
 
		bo->binding.offset = 0;
		bo->domain = DOMAIN_GPU;
		bo->gpu_dirty = false;
 
		if (bo->proxy) {
			/* proxies are not used for domain tracking */
			bo->exec = NULL;
			__kgem_bo_clear_busy(bo);
		}
 
		kgem->scanout_busy |= bo->scanout;
	}
 
	if (rq == &kgem->static_request) {
		struct drm_i915_gem_set_domain set_domain;
 
		DBG(("%s: syncing due to allocation failure\n", __FUNCTION__));
 
		VG_CLEAR(set_domain);
		set_domain.handle = rq->bo->handle;
		set_domain.read_domains = I915_GEM_DOMAIN_GTT;
		set_domain.write_domain = I915_GEM_DOMAIN_GTT;
		if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain)) {
			DBG(("%s: sync: GPU hang detected\n", __FUNCTION__));
			kgem_throttle(kgem);
		}
 
		kgem_retire(kgem);
		assert(list_is_empty(&rq->buffers));
 
		assert(rq->bo->map == NULL);
		gem_close(kgem->fd, rq->bo->handle);
		kgem_cleanup_cache(kgem);
	} else {
		list_add_tail(&rq->list, &kgem->requests[rq->ring]);
		kgem->need_throttle = kgem->need_retire = 1;
	}
 
	kgem->next_request = NULL;
}
 
static void kgem_close_list(struct kgem *kgem, struct list *head)
{
	while (!list_is_empty(head))
		kgem_bo_free(kgem, list_first_entry(head, struct kgem_bo, list));
}
 
static void kgem_close_inactive(struct kgem *kgem)
{
	unsigned int i;
 
	for (i = 0; i < ARRAY_SIZE(kgem->inactive); i++)
		kgem_close_list(kgem, &kgem->inactive[i]);
}
 
static void kgem_finish_buffers(struct kgem *kgem)
{
	struct kgem_buffer *bo, *next;
 
	list_for_each_entry_safe(bo, next, &kgem->batch_buffers, base.list) {
		DBG(("%s: buffer handle=%d, used=%d, exec?=%d, write=%d, mmapped=%s\n",
		     __FUNCTION__, bo->base.handle, bo->used, bo->base.exec!=NULL,
		     bo->write, bo->mmapped ? IS_CPU_MAP(bo->base.map) ? "cpu" : "gtt" : "no"));
 
		assert(next->base.list.prev == &bo->base.list);
		assert(bo->base.io);
		assert(bo->base.refcnt >= 1);
 
		if (!bo->base.exec) {
			DBG(("%s: skipping unattached handle=%d, used=%d\n",
			     __FUNCTION__, bo->base.handle, bo->used));
			continue;
		}
 
		if (!bo->write) {
			assert(bo->base.exec || bo->base.refcnt > 1);
			goto decouple;
		}
 
		if (bo->mmapped) {
			int used;
 
			assert(!bo->need_io);
 
			used = ALIGN(bo->used, PAGE_SIZE);
			if (!DBG_NO_UPLOAD_ACTIVE &&
			    used + PAGE_SIZE <= bytes(&bo->base) &&
			    (kgem->has_llc || !IS_CPU_MAP(bo->base.map) || bo->base.snoop)) {
				DBG(("%s: retaining upload buffer (%d/%d)\n",
				     __FUNCTION__, bo->used, bytes(&bo->base)));
				bo->used = used;
				list_move(&bo->base.list,
					  &kgem->active_buffers);
				continue;
			}
			DBG(("%s: discarding mmapped buffer, used=%d, map type=%d\n",
			     __FUNCTION__, bo->used, (int)__MAP_TYPE(bo->base.map)));
			goto decouple;
		}
 
		if (!bo->used) {
			/* Unless we replace the handle in the execbuffer,
			 * then this bo will become active. So decouple it
			 * from the buffer list and track it in the normal
			 * manner.
			 */
			goto decouple;
		}
 
		assert(bo->need_io);
		assert(bo->base.rq == MAKE_REQUEST(kgem->next_request, kgem->ring));
		assert(bo->base.domain != DOMAIN_GPU);
 
		if (bo->base.refcnt == 1 &&
		    bo->base.size.pages.count > 1 &&
		    bo->used < bytes(&bo->base) / 2) {
			struct kgem_bo *shrink;
			unsigned alloc = NUM_PAGES(bo->used);
 
			shrink = search_snoop_cache(kgem, alloc,
						    CREATE_INACTIVE | CREATE_NO_RETIRE);
			if (shrink) {
				void *map;
				int n;
 
				DBG(("%s: used=%d, shrinking %d to %d, handle %d to %d\n",
				     __FUNCTION__,
				     bo->used, bytes(&bo->base), bytes(shrink),
				     bo->base.handle, shrink->handle));
 
				assert(bo->used <= bytes(shrink));
				map = kgem_bo_map__cpu(kgem, shrink);
				if (map) {
					kgem_bo_sync__cpu(kgem, shrink);
					memcpy(map, bo->mem, bo->used);
 
					shrink->target_handle =
						kgem->has_handle_lut ? bo->base.target_handle : shrink->handle;
					for (n = 0; n < kgem->nreloc; n++) {
						if (kgem->reloc[n].target_handle == bo->base.target_handle) {
							kgem->reloc[n].target_handle = shrink->target_handle;
							kgem->reloc[n].presumed_offset = shrink->presumed_offset;
							kgem->batch[kgem->reloc[n].offset/sizeof(kgem->batch[0])] =
								kgem->reloc[n].delta + shrink->presumed_offset;
						}
					}
 
					bo->base.exec->handle = shrink->handle;
					bo->base.exec->offset = shrink->presumed_offset;
					shrink->exec = bo->base.exec;
					shrink->rq = bo->base.rq;
					list_replace(&bo->base.request,
						     &shrink->request);
					list_init(&bo->base.request);
					shrink->needs_flush = bo->base.gpu_dirty;
 
					bo->base.exec = NULL;
					bo->base.rq = NULL;
					bo->base.gpu_dirty = false;
					bo->base.needs_flush = false;
					bo->used = 0;
 
					goto decouple;
				}
 
				__kgem_bo_destroy(kgem, shrink);
			}
 
			shrink = search_linear_cache(kgem, alloc,
						     CREATE_INACTIVE | CREATE_NO_RETIRE);
			if (shrink) {
				int n;
 
				DBG(("%s: used=%d, shrinking %d to %d, handle %d to %d\n",
				     __FUNCTION__,
				     bo->used, bytes(&bo->base), bytes(shrink),
				     bo->base.handle, shrink->handle));
 
				assert(bo->used <= bytes(shrink));
				if (gem_write(kgem->fd, shrink->handle,
					      0, bo->used, bo->mem) == 0) {
					shrink->target_handle =
						kgem->has_handle_lut ? bo->base.target_handle : shrink->handle;
					for (n = 0; n < kgem->nreloc; n++) {
						if (kgem->reloc[n].target_handle == bo->base.target_handle) {
							kgem->reloc[n].target_handle = shrink->target_handle;
							kgem->reloc[n].presumed_offset = shrink->presumed_offset;
							kgem->batch[kgem->reloc[n].offset/sizeof(kgem->batch[0])] =
								kgem->reloc[n].delta + shrink->presumed_offset;
						}
					}
 
					bo->base.exec->handle = shrink->handle;
					bo->base.exec->offset = shrink->presumed_offset;
					shrink->exec = bo->base.exec;
					shrink->rq = bo->base.rq;
					list_replace(&bo->base.request,
						     &shrink->request);
					list_init(&bo->base.request);
					shrink->needs_flush = bo->base.gpu_dirty;
 
					bo->base.exec = NULL;
					bo->base.rq = NULL;
					bo->base.gpu_dirty = false;
					bo->base.needs_flush = false;
					bo->used = 0;
 
					goto decouple;
				}
 
				__kgem_bo_destroy(kgem, shrink);
			}
		}
 
		DBG(("%s: handle=%d, uploading %d/%d\n",
		     __FUNCTION__, bo->base.handle, bo->used, bytes(&bo->base)));
		ASSERT_IDLE(kgem, bo->base.handle);
		assert(bo->used <= bytes(&bo->base));
		gem_write(kgem->fd, bo->base.handle,
			  0, bo->used, bo->mem);
		bo->need_io = 0;
 
decouple:
		DBG(("%s: releasing handle=%d\n",
		     __FUNCTION__, bo->base.handle));
		list_del(&bo->base.list);
		kgem_bo_unref(kgem, &bo->base);
	}
}
 
static void kgem_cleanup(struct kgem *kgem)
{
	int n;
 
	for (n = 0; n < ARRAY_SIZE(kgem->requests); n++) {
		while (!list_is_empty(&kgem->requests[n])) {
			struct kgem_request *rq;
 
			rq = list_first_entry(&kgem->requests[n],
					      struct kgem_request,
					      list);
			while (!list_is_empty(&rq->buffers)) {
				struct kgem_bo *bo;
 
				bo = list_first_entry(&rq->buffers,
						      struct kgem_bo,
						      request);
 
				bo->exec = NULL;
				bo->gpu_dirty = false;
				__kgem_bo_clear_busy(bo);
				if (bo->refcnt == 0)
					kgem_bo_free(kgem, bo);
			}
 
			__kgem_request_free(rq);
		}
	}
 
	kgem_close_inactive(kgem);
}
 
static int kgem_batch_write(struct kgem *kgem, uint32_t handle, uint32_t size)
{
	int ret;
 
	ASSERT_IDLE(kgem, handle);
 
	/* If there is no surface data, just upload the batch */
	if (kgem->surface == kgem->batch_size)
		return gem_write(kgem->fd, handle,
				 0, sizeof(uint32_t)*kgem->nbatch,
				 kgem->batch);
 
	/* Are the batch pages conjoint with the surface pages? */
	if (kgem->surface < kgem->nbatch + PAGE_SIZE/sizeof(uint32_t)) {
		assert(size == PAGE_ALIGN(kgem->batch_size*sizeof(uint32_t)));
		return gem_write(kgem->fd, handle,
				 0, kgem->batch_size*sizeof(uint32_t),
				 kgem->batch);
	}
 
	/* Disjoint surface/batch, upload separately */
	ret = gem_write(kgem->fd, handle,
			0, sizeof(uint32_t)*kgem->nbatch,
			kgem->batch);
	if (ret)
		return ret;
 
	ret = PAGE_ALIGN(sizeof(uint32_t) * kgem->batch_size);
	ret -= sizeof(uint32_t) * kgem->surface;
	assert(size-ret >= kgem->nbatch*sizeof(uint32_t));
	return __gem_write(kgem->fd, handle,
			size - ret, (kgem->batch_size - kgem->surface)*sizeof(uint32_t),
			kgem->batch + kgem->surface);
}
 
void kgem_reset(struct kgem *kgem)
{
	if (kgem->next_request) {
		struct kgem_request *rq = kgem->next_request;
 
		while (!list_is_empty(&rq->buffers)) {
			struct kgem_bo *bo =
				list_first_entry(&rq->buffers,
						 struct kgem_bo,
						 request);
			list_del(&bo->request);
 
			assert(RQ(bo->rq) == rq);
 
			bo->binding.offset = 0;
			bo->exec = NULL;
			bo->target_handle = -1;
			bo->gpu_dirty = false;
 
			if (bo->needs_flush && __kgem_busy(kgem, bo->handle)) {
				assert(bo->domain == DOMAIN_GPU || bo->domain == DOMAIN_NONE);
				list_add(&bo->request, &kgem->flushing);
				bo->rq = (void *)kgem;
			} else
				__kgem_bo_clear_busy(bo);
 
			if (bo->refcnt || bo->rq)
				continue;
 
			if (bo->snoop) {
				kgem_bo_move_to_snoop(kgem, bo);
			} else if (bo->scanout) {
				kgem_bo_move_to_scanout(kgem, bo);
			} else if ((bo = kgem_bo_replace_io(bo))->reusable &&
				   kgem_bo_set_purgeable(kgem, bo)) {
				kgem_bo_move_to_inactive(kgem, bo);
			} else {
				DBG(("%s: closing %d\n",
				     __FUNCTION__, bo->handle));
				kgem_bo_free(kgem, bo);
			}
		}
 
		if (rq != &kgem->static_request) {
			list_init(&rq->list);
			__kgem_request_free(rq);
		}
	}
 
	kgem->nfence = 0;
	kgem->nexec = 0;
	kgem->nreloc = 0;
	kgem->nreloc__self = 0;
	kgem->aperture = 0;
	kgem->aperture_fenced = 0;
	kgem->nbatch = 0;
	kgem->surface = kgem->batch_size;
	kgem->mode = KGEM_NONE;
	kgem->flush = 0;
	kgem->batch_flags = kgem->batch_flags_base;
 
	kgem->next_request = __kgem_request_alloc(kgem);
 
	kgem_sna_reset(kgem);
}
 
static int compact_batch_surface(struct kgem *kgem)
{
	int size, shrink, n;
 
	if (!kgem->has_relaxed_delta)
		return kgem->batch_size;
 
	/* See if we can pack the contents into one or two pages */
	n = ALIGN(kgem->batch_size, 1024);
	size = n - kgem->surface + kgem->nbatch;
	size = ALIGN(size, 1024);
 
	shrink = n - size;
	if (shrink) {
		DBG(("shrinking from %d to %d\n", kgem->batch_size, size));
 
		shrink *= sizeof(uint32_t);
		for (n = 0; n < kgem->nreloc; n++) {
			if (kgem->reloc[n].read_domains == I915_GEM_DOMAIN_INSTRUCTION &&
			    kgem->reloc[n].target_handle == ~0U)
				kgem->reloc[n].delta -= shrink;
 
			if (kgem->reloc[n].offset >= sizeof(uint32_t)*kgem->nbatch)
				kgem->reloc[n].offset -= shrink;
		}
	}
 
	return size * sizeof(uint32_t);
}
 
static struct kgem_bo *
kgem_create_batch(struct kgem *kgem, int size)
{
	struct drm_i915_gem_set_domain set_domain;
	struct kgem_bo *bo;
 
	if (size <= 4096) {
		bo = list_first_entry(&kgem->pinned_batches[0],
				      struct kgem_bo,
				      list);
		if (!bo->rq) {
out_4096:
			list_move_tail(&bo->list, &kgem->pinned_batches[0]);
			return kgem_bo_reference(bo);
		}
 
		if (!__kgem_busy(kgem, bo->handle)) {
			assert(RQ(bo->rq)->bo == bo);
			__kgem_retire_rq(kgem, RQ(bo->rq));
			goto out_4096;
		}
	}
 
	if (size <= 16384) {
		bo = list_first_entry(&kgem->pinned_batches[1],
				      struct kgem_bo,
				      list);
		if (!bo->rq) {
out_16384:
			list_move_tail(&bo->list, &kgem->pinned_batches[1]);
			return kgem_bo_reference(bo);
		}
 
		if (!__kgem_busy(kgem, bo->handle)) {
			assert(RQ(bo->rq)->bo == bo);
			__kgem_retire_rq(kgem, RQ(bo->rq));
			goto out_16384;
		}
	}
 
	if (kgem->gen == 020 && !kgem->has_pinned_batches) {
		assert(size <= 16384);
 
		bo = list_first_entry(&kgem->pinned_batches[size > 4096],
				      struct kgem_bo,
				      list);
		list_move_tail(&bo->list, &kgem->pinned_batches[size > 4096]);
 
		DBG(("%s: syncing due to busy batches\n", __FUNCTION__));
 
		VG_CLEAR(set_domain);
		set_domain.handle = bo->handle;
		set_domain.read_domains = I915_GEM_DOMAIN_GTT;
		set_domain.write_domain = I915_GEM_DOMAIN_GTT;
		if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain)) {
			DBG(("%s: sync: GPU hang detected\n", __FUNCTION__));
			kgem_throttle(kgem);
			return NULL;
		}
 
		kgem_retire(kgem);
		assert(bo->rq == NULL);
		return kgem_bo_reference(bo);
	}
 
	return kgem_create_linear(kgem, size, CREATE_NO_THROTTLE);
}
 
void _kgem_submit(struct kgem *kgem)
{
	struct kgem_request *rq;
	uint32_t batch_end;
	int size;
 
	assert(!DBG_NO_HW);
	assert(!kgem->wedged);
 
	assert(kgem->nbatch);
	assert(kgem->nbatch <= KGEM_BATCH_SIZE(kgem));
	assert(kgem->nbatch <= kgem->surface);
 
	batch_end = kgem_end_batch(kgem);
	kgem_sna_flush(kgem);
 
	DBG(("batch[%d/%d, flags=%x]: %d %d %d %d, nreloc=%d, nexec=%d, nfence=%d, aperture=%d\n",
	     kgem->mode, kgem->ring, kgem->batch_flags,
	     batch_end, kgem->nbatch, kgem->surface, kgem->batch_size,
	     kgem->nreloc, kgem->nexec, kgem->nfence, kgem->aperture));
 
	assert(kgem->nbatch <= kgem->batch_size);
	assert(kgem->nbatch <= kgem->surface);
	assert(kgem->nreloc <= ARRAY_SIZE(kgem->reloc));
	assert(kgem->nexec < ARRAY_SIZE(kgem->exec));
	assert(kgem->nfence <= kgem->fence_max);
 
	kgem_finish_buffers(kgem);
 
#if SHOW_BATCH
	__kgem_batch_debug(kgem, batch_end);
#endif
 
	rq = kgem->next_request;
	if (kgem->surface != kgem->batch_size)
		size = compact_batch_surface(kgem);
	else
		size = kgem->nbatch * sizeof(kgem->batch[0]);
	rq->bo = kgem_create_batch(kgem, size);
	if (rq->bo) {
		uint32_t handle = rq->bo->handle;
		int i;
 
		assert(!rq->bo->needs_flush);
 
		i = kgem->nexec++;
		kgem->exec[i].handle = handle;
		kgem->exec[i].relocation_count = kgem->nreloc;
		kgem->exec[i].relocs_ptr = (uintptr_t)kgem->reloc;
		kgem->exec[i].alignment = 0;
		kgem->exec[i].offset = rq->bo->presumed_offset;
		kgem->exec[i].flags = 0;
		kgem->exec[i].rsvd1 = 0;
		kgem->exec[i].rsvd2 = 0;
 
		rq->bo->target_handle = kgem->has_handle_lut ? i : handle;
		rq->bo->exec = &kgem->exec[i];
		rq->bo->rq = MAKE_REQUEST(rq, kgem->ring); /* useful sanity check */
		list_add(&rq->bo->request, &rq->buffers);
		rq->ring = kgem->ring == KGEM_BLT;
 
		kgem_fixup_self_relocs(kgem, rq->bo);
 
		if (kgem_batch_write(kgem, handle, size) == 0) {
			struct drm_i915_gem_execbuffer2 execbuf;
			int ret, retry = 3;
 
			memset(&execbuf, 0, sizeof(execbuf));
			execbuf.buffers_ptr = (uintptr_t)kgem->exec;
			execbuf.buffer_count = kgem->nexec;
			execbuf.batch_len = batch_end*sizeof(uint32_t);
			execbuf.flags = kgem->ring | kgem->batch_flags;
 
 
			ret = drmIoctl(kgem->fd,
				       DRM_IOCTL_I915_GEM_EXECBUFFER2,
				       &execbuf);
			while (ret == -1 && errno == EBUSY && retry--) {
				__kgem_throttle(kgem);
				ret = drmIoctl(kgem->fd,
					       DRM_IOCTL_I915_GEM_EXECBUFFER2,
					       &execbuf);
			}
			if (DEBUG_SYNC && ret == 0) {
				struct drm_i915_gem_set_domain set_domain;
 
				VG_CLEAR(set_domain);
				set_domain.handle = handle;
				set_domain.read_domains = I915_GEM_DOMAIN_GTT;
				set_domain.write_domain = I915_GEM_DOMAIN_GTT;
 
				ret = drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain);
			}
			if (ret == -1) {
//				DBG(("%s: GPU hang detected [%d]\n",
//				     __FUNCTION__, errno));
				kgem_throttle(kgem);
				kgem->wedged = true;
 
#if 0
				ret = errno;
				ErrorF("batch[%d/%d]: %d %d %d, nreloc=%d, nexec=%d, nfence=%d, aperture=%d: errno=%d\n",
				       kgem->mode, kgem->ring, batch_end, kgem->nbatch, kgem->surface,
				       kgem->nreloc, kgem->nexec, kgem->nfence, kgem->aperture, errno);
 
				for (i = 0; i < kgem->nexec; i++) {
					struct kgem_bo *bo, *found = NULL;
 
					list_for_each_entry(bo, &kgem->next_request->buffers, request) {
						if (bo->handle == kgem->exec[i].handle) {
							found = bo;
							break;
						}
					}
					ErrorF("exec[%d] = handle:%d, presumed offset: %x, size: %d, tiling %d, fenced %d, snooped %d, deleted %d\n",
					       i,
					       kgem->exec[i].handle,
					       (int)kgem->exec[i].offset,
					       found ? kgem_bo_size(found) : -1,
					       found ? found->tiling : -1,
					       (int)(kgem->exec[i].flags & EXEC_OBJECT_NEEDS_FENCE),
					       found ? found->snoop : -1,
					       found ? found->purged : -1);
				}
				for (i = 0; i < kgem->nreloc; i++) {
					ErrorF("reloc[%d] = pos:%d, target:%d, delta:%d, read:%x, write:%x, offset:%x\n",
					       i,
					       (int)kgem->reloc[i].offset,
					       kgem->reloc[i].target_handle,
					       kgem->reloc[i].delta,
					       kgem->reloc[i].read_domains,
					       kgem->reloc[i].write_domain,
					       (int)kgem->reloc[i].presumed_offset);
				}
 
				if (DEBUG_SYNC) {
					int fd = open("/tmp/batchbuffer", O_WRONLY | O_CREAT | O_APPEND, 0666);
					if (fd != -1) {
						write(fd, kgem->batch, batch_end*sizeof(uint32_t));
						close(fd);
					}
 
					FatalError("SNA: failed to submit batchbuffer, errno=%d\n", ret);
				}
#endif
			}
		}
 
		kgem_commit(kgem);
	}
	if (kgem->wedged)
		kgem_cleanup(kgem);
 
	kgem_reset(kgem);
 
	assert(kgem->next_request != NULL);
}
 
void kgem_throttle(struct kgem *kgem)
{
	kgem->need_throttle = 0;
	if (kgem->wedged)
		return;
 
	kgem->wedged = __kgem_throttle(kgem);
	if (kgem->wedged) {
		printf("Detected a hung GPU, disabling acceleration.\n");
		printf("When reporting this, please include i915_error_state from debugfs and the full dmesg.\n");
	}
}
 
void kgem_purge_cache(struct kgem *kgem)
{
	struct kgem_bo *bo, *next;
	int i;
 
	for (i = 0; i < ARRAY_SIZE(kgem->inactive); i++) {
		list_for_each_entry_safe(bo, next, &kgem->inactive[i], list) {
			if (!kgem_bo_is_retained(kgem, bo)) {
				DBG(("%s: purging %d\n",
				     __FUNCTION__, bo->handle));
				kgem_bo_free(kgem, bo);
			}
		}
	}
 
	kgem->need_purge = false;
}
 
 
void kgem_clean_large_cache(struct kgem *kgem)
{
	while (!list_is_empty(&kgem->large_inactive)) {
		kgem_bo_free(kgem,
			     list_first_entry(&kgem->large_inactive,
					      struct kgem_bo, list));
 
	}
}
 
bool kgem_expire_cache(struct kgem *kgem)
{
	time_t now, expire;
	struct kgem_bo *bo;
	unsigned int size = 0, count = 0;
	bool idle;
	unsigned int i;
 
	time(&now);
 
	while (__kgem_freed_bo) {
		bo = __kgem_freed_bo;
		__kgem_freed_bo = *(struct kgem_bo **)bo;
		free(bo);
	}
 
	while (__kgem_freed_request) {
		struct kgem_request *rq = __kgem_freed_request;
		__kgem_freed_request = *(struct kgem_request **)rq;
		free(rq);
	}
 
	kgem_clean_large_cache(kgem);
 
	expire = 0;
	list_for_each_entry(bo, &kgem->snoop, list) {
		if (bo->delta) {
			expire = now - MAX_INACTIVE_TIME/2;
			break;
		}
 
		bo->delta = now;
	}
	if (expire) {
		while (!list_is_empty(&kgem->snoop)) {
			bo = list_last_entry(&kgem->snoop, struct kgem_bo, list);
 
			if (bo->delta > expire)
				break;
 
			kgem_bo_free(kgem, bo);
		}
	}
#ifdef DEBUG_MEMORY
	{
		long snoop_size = 0;
		int snoop_count = 0;
		list_for_each_entry(bo, &kgem->snoop, list)
			snoop_count++, snoop_size += bytes(bo);
		ErrorF("%s: still allocated %d bo, %ld bytes, in snoop cache\n",
		       __FUNCTION__, snoop_count, snoop_size);
	}
#endif
 
	kgem_retire(kgem);
	if (kgem->wedged)
		kgem_cleanup(kgem);
 
	kgem->expire(kgem);
 
	if (kgem->need_purge)
		kgem_purge_cache(kgem);
 
	expire = 0;
 
	idle = !kgem->need_retire;
	for (i = 0; i < ARRAY_SIZE(kgem->inactive); i++) {
		idle &= list_is_empty(&kgem->inactive[i]);
		list_for_each_entry(bo, &kgem->inactive[i], list) {
			if (bo->delta) {
				expire = now - MAX_INACTIVE_TIME;
				break;
			}
 
			bo->delta = now;
		}
	}
	if (idle) {
		DBG(("%s: idle\n", __FUNCTION__));
		kgem->need_expire = false;
		return false;
	}
	if (expire == 0)
		return true;
 
	idle = !kgem->need_retire;
	for (i = 0; i < ARRAY_SIZE(kgem->inactive); i++) {
		struct list preserve;
 
		list_init(&preserve);
		while (!list_is_empty(&kgem->inactive[i])) {
			bo = list_last_entry(&kgem->inactive[i],
					     struct kgem_bo, list);
 
			if (bo->delta > expire) {
				idle = false;
				break;
			}
 
			if (bo->map && bo->delta + MAP_PRESERVE_TIME > expire) {
				idle = false;
				list_move_tail(&bo->list, &preserve);
			} else {
				count++;
				size += bytes(bo);
				kgem_bo_free(kgem, bo);
				DBG(("%s: expiring %d\n",
				     __FUNCTION__, bo->handle));
			}
		}
		if (!list_is_empty(&preserve)) {
			preserve.prev->next = kgem->inactive[i].next;
			kgem->inactive[i].next->prev = preserve.prev;
			kgem->inactive[i].next = preserve.next;
			preserve.next->prev = &kgem->inactive[i];
		}
	}
 
#ifdef DEBUG_MEMORY
	{
		long inactive_size = 0;
		int inactive_count = 0;
		for (i = 0; i < ARRAY_SIZE(kgem->inactive); i++)
			list_for_each_entry(bo, &kgem->inactive[i], list)
				inactive_count++, inactive_size += bytes(bo);
		ErrorF("%s: still allocated %d bo, %ld bytes, in inactive cache\n",
		       __FUNCTION__, inactive_count, inactive_size);
	}
#endif
 
	DBG(("%s: expired %d objects, %d bytes, idle? %d\n",
	     __FUNCTION__, count, size, idle));
 
	kgem->need_expire = !idle;
	return !idle;
	(void)count;
	(void)size;
}
 
void kgem_cleanup_cache(struct kgem *kgem)
{
	unsigned int i;
	int n;
 
	/* sync to the most recent request */
	for (n = 0; n < ARRAY_SIZE(kgem->requests); n++) {
		if (!list_is_empty(&kgem->requests[n])) {
			struct kgem_request *rq;
			struct drm_i915_gem_set_domain set_domain;
 
			rq = list_first_entry(&kgem->requests[n],
					      struct kgem_request,
					      list);
 
			DBG(("%s: sync on cleanup\n", __FUNCTION__));
 
			VG_CLEAR(set_domain);
			set_domain.handle = rq->bo->handle;
			set_domain.read_domains = I915_GEM_DOMAIN_GTT;
			set_domain.write_domain = I915_GEM_DOMAIN_GTT;
			(void)drmIoctl(kgem->fd,
				       DRM_IOCTL_I915_GEM_SET_DOMAIN,
				       &set_domain);
		}
	}
 
	kgem_retire(kgem);
	kgem_cleanup(kgem);
 
	for (i = 0; i < ARRAY_SIZE(kgem->inactive); i++) {
		while (!list_is_empty(&kgem->inactive[i]))
			kgem_bo_free(kgem,
				     list_last_entry(&kgem->inactive[i],
						     struct kgem_bo, list));
	}
 
	kgem_clean_large_cache(kgem);
 
	while (!list_is_empty(&kgem->snoop))
		kgem_bo_free(kgem,
			     list_last_entry(&kgem->snoop,
					     struct kgem_bo, list));
 
	while (__kgem_freed_bo) {
		struct kgem_bo *bo = __kgem_freed_bo;
		__kgem_freed_bo = *(struct kgem_bo **)bo;
		free(bo);
	}
 
	kgem->need_purge = false;
	kgem->need_expire = false;
}
 
static struct kgem_bo *
search_linear_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags)
{
	struct kgem_bo *bo, *first = NULL;
	bool use_active = (flags & CREATE_INACTIVE) == 0;
	struct list *cache;
 
	DBG(("%s: num_pages=%d, flags=%x, use_active? %d, use_large=%d [max=%d]\n",
	     __FUNCTION__, num_pages, flags, use_active,
	     num_pages >= MAX_CACHE_SIZE / PAGE_SIZE,
	     MAX_CACHE_SIZE / PAGE_SIZE));
 
	assert(num_pages);
 
	if (num_pages >= MAX_CACHE_SIZE / PAGE_SIZE) {
		DBG(("%s: searching large buffers\n", __FUNCTION__));
retry_large:
		cache = use_active ? &kgem->large : &kgem->large_inactive;
		list_for_each_entry_safe(bo, first, cache, list) {
			assert(bo->refcnt == 0);
			assert(bo->reusable);
			assert(!bo->scanout);
 
			if (num_pages > num_pages(bo))
				goto discard;
 
			if (bo->tiling != I915_TILING_NONE) {
				if (use_active)
					goto discard;
 
				if (!gem_set_tiling(kgem->fd, bo->handle,
						    I915_TILING_NONE, 0))
					goto discard;
 
				bo->tiling = I915_TILING_NONE;
				bo->pitch = 0;
			}
 
			if (bo->purged && !kgem_bo_clear_purgeable(kgem, bo))
				goto discard;
 
			list_del(&bo->list);
			if (bo->rq == (void *)kgem)
				list_del(&bo->request);
 
			bo->delta = 0;
			assert_tiling(kgem, bo);
			return bo;
 
discard:
			if (!use_active)
				kgem_bo_free(kgem, bo);
		}
 
		if (use_active) {
			use_active = false;
			goto retry_large;
		}
 
		if (__kgem_throttle_retire(kgem, flags))
			goto retry_large;
 
		return NULL;
	}
 
	if (!use_active && list_is_empty(inactive(kgem, num_pages))) {
		DBG(("%s: inactive and cache bucket empty\n",
		     __FUNCTION__));
 
		if (flags & CREATE_NO_RETIRE) {
			DBG(("%s: can not retire\n", __FUNCTION__));
			return NULL;
		}
 
		if (list_is_empty(active(kgem, num_pages, I915_TILING_NONE))) {
			DBG(("%s: active cache bucket empty\n", __FUNCTION__));
			return NULL;
		}
 
		if (!__kgem_throttle_retire(kgem, flags)) {
			DBG(("%s: nothing retired\n", __FUNCTION__));
			return NULL;
		}
 
		if (list_is_empty(inactive(kgem, num_pages))) {
			DBG(("%s: active cache bucket still empty after retire\n",
			     __FUNCTION__));
			return NULL;
		}
	}
 
	if (!use_active && flags & (CREATE_CPU_MAP | CREATE_GTT_MAP)) {
		int for_cpu = !!(flags & CREATE_CPU_MAP);
		DBG(("%s: searching for inactive %s map\n",
		     __FUNCTION__, for_cpu ? "cpu" : "gtt"));
		cache = &kgem->vma[for_cpu].inactive[cache_bucket(num_pages)];
		list_for_each_entry(bo, cache, vma) {
			assert(IS_CPU_MAP(bo->map) == for_cpu);
			assert(bucket(bo) == cache_bucket(num_pages));
			assert(bo->proxy == NULL);
			assert(bo->rq == NULL);
			assert(bo->exec == NULL);
			assert(!bo->scanout);
 
			if (num_pages > num_pages(bo)) {
				DBG(("inactive too small: %d < %d\n",
				     num_pages(bo), num_pages));
				continue;
			}
 
			if (bo->purged && !kgem_bo_clear_purgeable(kgem, bo)) {
				kgem_bo_free(kgem, bo);
				break;
			}
 
			if (I915_TILING_NONE != bo->tiling &&
			    !gem_set_tiling(kgem->fd, bo->handle,
					    I915_TILING_NONE, 0))
				continue;
 
			kgem_bo_remove_from_inactive(kgem, bo);
 
			bo->tiling = I915_TILING_NONE;
			bo->pitch = 0;
			bo->delta = 0;
			DBG(("  %s: found handle=%d (num_pages=%d) in linear vma cache\n",
			     __FUNCTION__, bo->handle, num_pages(bo)));
			assert(use_active || bo->domain != DOMAIN_GPU);
			assert(!bo->needs_flush);
			assert_tiling(kgem, bo);
			ASSERT_MAYBE_IDLE(kgem, bo->handle, !use_active);
			return bo;
		}
 
		if (flags & CREATE_EXACT)
			return NULL;
 
		if (flags & CREATE_CPU_MAP && !kgem->has_llc)
			return NULL;
	}
 
	cache = use_active ? active(kgem, num_pages, I915_TILING_NONE) : inactive(kgem, num_pages);
	list_for_each_entry(bo, cache, list) {
		assert(bo->refcnt == 0);
		assert(bo->reusable);
		assert(!!bo->rq == !!use_active);
		assert(bo->proxy == NULL);
		assert(!bo->scanout);
 
		if (num_pages > num_pages(bo))
			continue;
 
		if (use_active &&
		    kgem->gen <= 040 &&
		    bo->tiling != I915_TILING_NONE)
			continue;
 
		if (bo->purged && !kgem_bo_clear_purgeable(kgem, bo)) {
			kgem_bo_free(kgem, bo);
			break;
		}
 
		if (I915_TILING_NONE != bo->tiling) {
			if (flags & (CREATE_CPU_MAP | CREATE_GTT_MAP))
				continue;
 
			if (first)
				continue;
 
			if (!gem_set_tiling(kgem->fd, bo->handle,
					    I915_TILING_NONE, 0))
				continue;
 
			bo->tiling = I915_TILING_NONE;
			bo->pitch = 0;
		}
 
		if (bo->map) {
			if (flags & (CREATE_CPU_MAP | CREATE_GTT_MAP)) {
				int for_cpu = !!(flags & CREATE_CPU_MAP);
				if (IS_CPU_MAP(bo->map) != for_cpu) {
					if (first != NULL)
						break;
 
					first = bo;
					continue;
				}
			} else {
				if (first != NULL)
					break;
 
				first = bo;
				continue;
			}
		} else {
			if (flags & (CREATE_CPU_MAP | CREATE_GTT_MAP)) {
				if (first != NULL)
					break;
 
				first = bo;
				continue;
			}
		}
 
		if (use_active)
			kgem_bo_remove_from_active(kgem, bo);
		else
			kgem_bo_remove_from_inactive(kgem, bo);
 
		assert(bo->tiling == I915_TILING_NONE);
		bo->pitch = 0;
		bo->delta = 0;
		DBG(("  %s: found handle=%d (num_pages=%d) in linear %s cache\n",
		     __FUNCTION__, bo->handle, num_pages(bo),
		     use_active ? "active" : "inactive"));
		assert(list_is_empty(&bo->list));
		assert(use_active || bo->domain != DOMAIN_GPU);
		assert(!bo->needs_flush || use_active);
		assert_tiling(kgem, bo);
		ASSERT_MAYBE_IDLE(kgem, bo->handle, !use_active);
		return bo;
	}
 
	if (first) {
		assert(first->tiling == I915_TILING_NONE);
 
		if (use_active)
			kgem_bo_remove_from_active(kgem, first);
		else
			kgem_bo_remove_from_inactive(kgem, first);
 
		first->pitch = 0;
		first->delta = 0;
		DBG(("  %s: found handle=%d (near-miss) (num_pages=%d) in linear %s cache\n",
		     __FUNCTION__, first->handle, num_pages(first),
		     use_active ? "active" : "inactive"));
		assert(list_is_empty(&first->list));
		assert(use_active || first->domain != DOMAIN_GPU);
		assert(!first->needs_flush || use_active);
		ASSERT_MAYBE_IDLE(kgem, first->handle, !use_active);
		return first;
	}
 
	return NULL;
}
 
 
struct kgem_bo *kgem_create_linear(struct kgem *kgem, int size, unsigned flags)
{
	struct kgem_bo *bo;
	uint32_t handle;
 
	DBG(("%s(%d)\n", __FUNCTION__, size));
	assert(size);
 
	if (flags & CREATE_GTT_MAP && kgem->has_llc) {
		flags &= ~CREATE_GTT_MAP;
		flags |= CREATE_CPU_MAP;
	}
 
	size = NUM_PAGES(size);
	bo = search_linear_cache(kgem, size, CREATE_INACTIVE | flags);
	if (bo) {
		assert(bo->domain != DOMAIN_GPU);
		ASSERT_IDLE(kgem, bo->handle);
		bo->refcnt = 1;
		return bo;
	}
 
	if (flags & CREATE_CACHED)
		return NULL;
 
	handle = gem_create(kgem->fd, size);
	if (handle == 0)
		return NULL;
 
	DBG(("%s: new handle=%d, num_pages=%d\n", __FUNCTION__, handle, size));
	bo = __kgem_bo_alloc(handle, size);
	if (bo == NULL) {
		gem_close(kgem->fd, handle);
		return NULL;
	}
 
	debug_alloc__bo(kgem, bo);
	return bo;
}
 
inline int kgem_bo_fenced_size(struct kgem *kgem, struct kgem_bo *bo)
{
	unsigned int size;
 
	assert(bo->tiling);
	assert_tiling(kgem, bo);
	assert(kgem->gen < 040);
 
	if (kgem->gen < 030)
		size = 512 * 1024;
	else
		size = 1024 * 1024;
	while (size < bytes(bo))
		size *= 2;
 
	return size;
}
 
struct kgem_bo *kgem_create_2d(struct kgem *kgem,
			       int width,
			       int height,
			       int bpp,
			       int tiling,
			       uint32_t flags)
{
	struct list *cache;
	struct kgem_bo *bo;
	uint32_t pitch, tiled_height, size;
	uint32_t handle;
	int i, bucket, retry;
	bool exact = flags & (CREATE_EXACT | CREATE_SCANOUT);
 
	if (tiling < 0)
		exact = true, tiling = -tiling;
 
 
	DBG(("%s(%dx%d, bpp=%d, tiling=%d, exact=%d, inactive=%d, cpu-mapping=%d, gtt-mapping=%d, scanout?=%d, prime?=%d, temp?=%d)\n", __FUNCTION__,
	     width, height, bpp, tiling, exact,
	     !!(flags & CREATE_INACTIVE),
	     !!(flags & CREATE_CPU_MAP),
	     !!(flags & CREATE_GTT_MAP),
	     !!(flags & CREATE_SCANOUT),
	     !!(flags & CREATE_PRIME),
	     !!(flags & CREATE_TEMPORARY)));
 
	size = kgem_surface_size(kgem, kgem->has_relaxed_fencing, flags,
				 width, height, bpp, tiling, &pitch);
	assert(size && size <= kgem->max_object_size);
	size /= PAGE_SIZE;
	bucket = cache_bucket(size);
 
	if (flags & CREATE_SCANOUT) {
		struct kgem_bo *last = NULL;
 
		list_for_each_entry_reverse(bo, &kgem->scanout, list) {
			assert(bo->scanout);
			assert(bo->delta);
			assert(!bo->flush);
			assert_tiling(kgem, bo);
 
			if (size > num_pages(bo) || num_pages(bo) > 2*size)
				continue;
 
			if (bo->tiling != tiling ||
			    (tiling != I915_TILING_NONE && bo->pitch != pitch)) {
				if (!gem_set_tiling(kgem->fd, bo->handle,
						    tiling, pitch))
					continue;
 
				bo->tiling = tiling;
				bo->pitch = pitch;
			}
 
			if (flags & CREATE_INACTIVE && bo->rq) {
				last = bo;
				continue;
			}
 
			list_del(&bo->list);
 
			bo->unique_id = kgem_get_unique_id(kgem);
			DBG(("  1:from scanout: pitch=%d, tiling=%d, handle=%d, id=%d\n",
			     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
			assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
			assert_tiling(kgem, bo);
			bo->refcnt = 1;
			return bo;
		}
 
		if (last) {
			list_del(&last->list);
 
			last->unique_id = kgem_get_unique_id(kgem);
			DBG(("  1:from scanout: pitch=%d, tiling=%d, handle=%d, id=%d\n",
			     last->pitch, last->tiling, last->handle, last->unique_id));
			assert(last->pitch*kgem_aligned_height(kgem, height, last->tiling) <= kgem_bo_size(last));
			assert_tiling(kgem, last);
			last->refcnt = 1;
			return last;
		}
 
		bo = NULL; //__kgem_bo_create_as_display(kgem, size, tiling, pitch);
		if (bo)
			return bo;
	}
 
	if (bucket >= NUM_CACHE_BUCKETS) {
		DBG(("%s: large bo num pages=%d, bucket=%d\n",
		     __FUNCTION__, size, bucket));
 
		if (flags & CREATE_INACTIVE)
			goto large_inactive;
 
		tiled_height = kgem_aligned_height(kgem, height, tiling);
 
		list_for_each_entry(bo, &kgem->large, list) {
			assert(!bo->purged);
			assert(!bo->scanout);
			assert(bo->refcnt == 0);
			assert(bo->reusable);
			assert_tiling(kgem, bo);
 
			if (kgem->gen < 040) {
				if (bo->pitch < pitch) {
					DBG(("tiled and pitch too small: tiling=%d, (want %d), pitch=%d, need %d\n",
					     bo->tiling, tiling,
					     bo->pitch, pitch));
					continue;
				}
 
				if (bo->pitch * tiled_height > bytes(bo))
					continue;
			} else {
				if (num_pages(bo) < size)
					continue;
 
				if (bo->pitch != pitch || bo->tiling != tiling) {
					if (!gem_set_tiling(kgem->fd, bo->handle,
							    tiling, pitch))
						continue;
 
					bo->pitch = pitch;
					bo->tiling = tiling;
				}
			}
 
			kgem_bo_remove_from_active(kgem, bo);
 
			bo->unique_id = kgem_get_unique_id(kgem);
			bo->delta = 0;
			DBG(("  1:from active: pitch=%d, tiling=%d, handle=%d, id=%d\n",
			     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
			assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
			assert_tiling(kgem, bo);
			bo->refcnt = 1;
			bo->flush = true;
			return bo;
		}
 
large_inactive:
		__kgem_throttle_retire(kgem, flags);
		list_for_each_entry(bo, &kgem->large_inactive, list) {
			assert(bo->refcnt == 0);
			assert(bo->reusable);
			assert(!bo->scanout);
			assert_tiling(kgem, bo);
 
			if (size > num_pages(bo))
				continue;
 
			if (bo->tiling != tiling ||
			    (tiling != I915_TILING_NONE && bo->pitch != pitch)) {
				if (!gem_set_tiling(kgem->fd, bo->handle,
						    tiling, pitch))
					continue;
 
				bo->tiling = tiling;
				bo->pitch = pitch;
			}
 
			if (bo->purged && !kgem_bo_clear_purgeable(kgem, bo)) {
				kgem_bo_free(kgem, bo);
				break;
			}
 
			list_del(&bo->list);
 
			assert(bo->domain != DOMAIN_GPU);
			bo->unique_id = kgem_get_unique_id(kgem);
			bo->pitch = pitch;
			bo->delta = 0;
			DBG(("  1:from large inactive: pitch=%d, tiling=%d, handle=%d, id=%d\n",
			     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
			assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
			assert_tiling(kgem, bo);
			bo->refcnt = 1;
			return bo;
		}
 
		goto create;
	}
 
	if (flags & (CREATE_CPU_MAP | CREATE_GTT_MAP)) {
		int for_cpu = !!(flags & CREATE_CPU_MAP);
		if (kgem->has_llc && tiling == I915_TILING_NONE)
			for_cpu = 1;
		/* We presume that we will need to upload to this bo,
		 * and so would prefer to have an active VMA.
		 */
		cache = &kgem->vma[for_cpu].inactive[bucket];
		do {
			list_for_each_entry(bo, cache, vma) {
				assert(bucket(bo) == bucket);
				assert(bo->refcnt == 0);
				assert(!bo->scanout);
				assert(bo->map);
				assert(IS_CPU_MAP(bo->map) == for_cpu);
				assert(bo->rq == NULL);
				assert(list_is_empty(&bo->request));
				assert(bo->flush == false);
				assert_tiling(kgem, bo);
 
				if (size > num_pages(bo)) {
					DBG(("inactive too small: %d < %d\n",
					     num_pages(bo), size));
					continue;
				}
 
				if (bo->tiling != tiling ||
				    (tiling != I915_TILING_NONE && bo->pitch != pitch)) {
					DBG(("inactive vma with wrong tiling: %d < %d\n",
					     bo->tiling, tiling));
					continue;
				}
 
				if (bo->purged && !kgem_bo_clear_purgeable(kgem, bo)) {
					kgem_bo_free(kgem, bo);
					break;
				}
 
				assert(bo->tiling == tiling);
				bo->pitch = pitch;
				bo->delta = 0;
				bo->unique_id = kgem_get_unique_id(kgem);
				bo->domain = DOMAIN_NONE;
 
				kgem_bo_remove_from_inactive(kgem, bo);
 
				DBG(("  from inactive vma: pitch=%d, tiling=%d: handle=%d, id=%d\n",
				     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
				assert(bo->reusable);
				assert(bo->domain != DOMAIN_GPU);
				ASSERT_IDLE(kgem, bo->handle);
				assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
				assert_tiling(kgem, bo);
				bo->refcnt = 1;
				return bo;
			}
		} while (!list_is_empty(cache) &&
			 __kgem_throttle_retire(kgem, flags));
 
		if (flags & CREATE_CPU_MAP && !kgem->has_llc) {
			if (list_is_empty(&kgem->active[bucket][tiling]) &&
			    list_is_empty(&kgem->inactive[bucket]))
				flags &= ~CREATE_CACHED;
 
			goto create;
	}
	}
 
	if (flags & CREATE_INACTIVE)
		goto skip_active_search;
 
	/* Best active match */
	retry = NUM_CACHE_BUCKETS - bucket;
	if (retry > 3 && (flags & CREATE_TEMPORARY) == 0)
		retry = 3;
search_again:
	assert(bucket < NUM_CACHE_BUCKETS);
	cache = &kgem->active[bucket][tiling];
	if (tiling) {
		tiled_height = kgem_aligned_height(kgem, height, tiling);
		list_for_each_entry(bo, cache, list) {
			assert(!bo->purged);
			assert(bo->refcnt == 0);
			assert(bucket(bo) == bucket);
			assert(bo->reusable);
			assert(bo->tiling == tiling);
			assert(bo->flush == false);
			assert(!bo->scanout);
			assert_tiling(kgem, bo);
 
			if (kgem->gen < 040) {
				if (bo->pitch < pitch) {
					DBG(("tiled and pitch too small: tiling=%d, (want %d), pitch=%d, need %d\n",
					     bo->tiling, tiling,
					     bo->pitch, pitch));
					continue;
				}
 
				if (bo->pitch * tiled_height > bytes(bo))
					continue;
			} else {
				if (num_pages(bo) < size)
					continue;
 
				if (bo->pitch != pitch) {
					if (!gem_set_tiling(kgem->fd,
							    bo->handle,
							    tiling, pitch))
						continue;
 
					bo->pitch = pitch;
				}
			}
 
			kgem_bo_remove_from_active(kgem, bo);
 
			bo->unique_id = kgem_get_unique_id(kgem);
			bo->delta = 0;
			DBG(("  1:from active: pitch=%d, tiling=%d, handle=%d, id=%d\n",
			     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
			assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
			assert_tiling(kgem, bo);
			bo->refcnt = 1;
			return bo;
		}
	} else {
		list_for_each_entry(bo, cache, list) {
			assert(bucket(bo) == bucket);
			assert(!bo->purged);
			assert(bo->refcnt == 0);
			assert(bo->reusable);
			assert(!bo->scanout);
			assert(bo->tiling == tiling);
			assert(bo->flush == false);
			assert_tiling(kgem, bo);
 
			if (num_pages(bo) < size)
				continue;
 
			kgem_bo_remove_from_active(kgem, bo);
 
			bo->pitch = pitch;
			bo->unique_id = kgem_get_unique_id(kgem);
			bo->delta = 0;
			DBG(("  1:from active: pitch=%d, tiling=%d, handle=%d, id=%d\n",
			     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
			assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
			assert_tiling(kgem, bo);
			bo->refcnt = 1;
			return bo;
		}
	}
 
	if (--retry && exact) {
		if (kgem->gen >= 040) {
			for (i = I915_TILING_NONE; i <= I915_TILING_Y; i++) {
				if (i == tiling)
					continue;
 
				cache = &kgem->active[bucket][i];
				list_for_each_entry(bo, cache, list) {
					assert(!bo->purged);
					assert(bo->refcnt == 0);
					assert(bo->reusable);
					assert(!bo->scanout);
					assert(bo->flush == false);
					assert_tiling(kgem, bo);
 
					if (num_pages(bo) < size)
						continue;
 
					if (!gem_set_tiling(kgem->fd,
							    bo->handle,
							    tiling, pitch))
						continue;
 
					kgem_bo_remove_from_active(kgem, bo);
 
					bo->unique_id = kgem_get_unique_id(kgem);
					bo->pitch = pitch;
					bo->tiling = tiling;
					bo->delta = 0;
					DBG(("  1:from active: pitch=%d, tiling=%d, handle=%d, id=%d\n",
					     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
					assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
					assert_tiling(kgem, bo);
					bo->refcnt = 1;
					return bo;
				}
			}
		}
 
		bucket++;
		goto search_again;
	}
 
	if (!exact) { /* allow an active near-miss? */
		i = tiling;
		while (--i >= 0) {
			tiled_height = kgem_surface_size(kgem, kgem->has_relaxed_fencing, flags,
							 width, height, bpp, tiling, &pitch);
			cache = active(kgem, tiled_height / PAGE_SIZE, i);
			tiled_height = kgem_aligned_height(kgem, height, i);
			list_for_each_entry(bo, cache, list) {
				assert(!bo->purged);
				assert(bo->refcnt == 0);
				assert(bo->reusable);
				assert(!bo->scanout);
				assert(bo->flush == false);
				assert_tiling(kgem, bo);
 
				if (bo->tiling) {
					if (bo->pitch < pitch) {
						DBG(("tiled and pitch too small: tiling=%d, (want %d), pitch=%d, need %d\n",
						     bo->tiling, tiling,
						     bo->pitch, pitch));
						continue;
					}
				} else
					bo->pitch = pitch;
 
				if (bo->pitch * tiled_height > bytes(bo))
					continue;
 
				kgem_bo_remove_from_active(kgem, bo);
 
				bo->unique_id = kgem_get_unique_id(kgem);
				bo->delta = 0;
				DBG(("  1:from active: pitch=%d, tiling=%d, handle=%d, id=%d\n",
				     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
				assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
				assert_tiling(kgem, bo);
				bo->refcnt = 1;
				return bo;
			}
		}
	}
 
skip_active_search:
	bucket = cache_bucket(size);
	retry = NUM_CACHE_BUCKETS - bucket;
	if (retry > 3)
		retry = 3;
search_inactive:
	/* Now just look for a close match and prefer any currently active */
	assert(bucket < NUM_CACHE_BUCKETS);
	cache = &kgem->inactive[bucket];
	list_for_each_entry(bo, cache, list) {
		assert(bucket(bo) == bucket);
		assert(bo->reusable);
		assert(!bo->scanout);
		assert(bo->flush == false);
		assert_tiling(kgem, bo);
 
		if (size > num_pages(bo)) {
			DBG(("inactive too small: %d < %d\n",
			     num_pages(bo), size));
			continue;
		}
 
		if (bo->tiling != tiling ||
		    (tiling != I915_TILING_NONE && bo->pitch != pitch)) {
			if (!gem_set_tiling(kgem->fd, bo->handle,
					    tiling, pitch))
				continue;
 
			if (bo->map)
				kgem_bo_release_map(kgem, bo);
		}
 
		if (bo->purged && !kgem_bo_clear_purgeable(kgem, bo)) {
			kgem_bo_free(kgem, bo);
			break;
		}
 
		kgem_bo_remove_from_inactive(kgem, bo);
 
		bo->pitch = pitch;
		bo->tiling = tiling;
 
		bo->delta = 0;
		bo->unique_id = kgem_get_unique_id(kgem);
		assert(bo->pitch);
		DBG(("  from inactive: pitch=%d, tiling=%d: handle=%d, id=%d\n",
		     bo->pitch, bo->tiling, bo->handle, bo->unique_id));
		assert(bo->refcnt == 0);
		assert(bo->reusable);
		assert((flags & CREATE_INACTIVE) == 0 || bo->domain != DOMAIN_GPU);
		ASSERT_MAYBE_IDLE(kgem, bo->handle, flags & CREATE_INACTIVE);
		assert(bo->pitch*kgem_aligned_height(kgem, height, bo->tiling) <= kgem_bo_size(bo));
		assert_tiling(kgem, bo);
		bo->refcnt = 1;
		return bo;
	}
 
	if (flags & CREATE_INACTIVE &&
	    !list_is_empty(&kgem->active[bucket][tiling]) &&
	    __kgem_throttle_retire(kgem, flags)) {
		flags &= ~CREATE_INACTIVE;
		goto search_inactive;
	}
 
	if (--retry) {
		bucket++;
		flags &= ~CREATE_INACTIVE;
		goto search_inactive;
	}
 
create:
	if (flags & CREATE_CACHED)
		return NULL;
 
	if (bucket >= NUM_CACHE_BUCKETS)
		size = ALIGN(size, 1024);
	handle = gem_create(kgem->fd, size);
	if (handle == 0)
		return NULL;
 
	bo = __kgem_bo_alloc(handle, size);
	if (!bo) {
		gem_close(kgem->fd, handle);
		return NULL;
	}
 
	if (bucket >= NUM_CACHE_BUCKETS) {
		DBG(("%s: marking large bo for automatic flushing\n",
		     __FUNCTION__));
		bo->flush = true;
	}
 
	bo->unique_id = kgem_get_unique_id(kgem);
	if (tiling == I915_TILING_NONE ||
	    gem_set_tiling(kgem->fd, handle, tiling, pitch)) {
		bo->tiling = tiling;
		bo->pitch = pitch;
	} else {
		if (flags & CREATE_EXACT) {
			if (bo->pitch != pitch || bo->tiling != tiling) {
				kgem_bo_free(kgem, bo);
				return NULL;
			}
		}
	}
 
	assert(bytes(bo) >= bo->pitch * kgem_aligned_height(kgem, height, bo->tiling));
	assert_tiling(kgem, bo);
 
	debug_alloc__bo(kgem, bo);
 
	DBG(("  new pitch=%d, tiling=%d, handle=%d, id=%d, num_pages=%d [%d], bucket=%d\n",
	     bo->pitch, bo->tiling, bo->handle, bo->unique_id,
	     size, num_pages(bo), bucket(bo)));
	return bo;
}
 
#if 0
struct kgem_bo *kgem_create_cpu_2d(struct kgem *kgem,
				   int width,
				   int height,
				   int bpp,
				   uint32_t flags)
{
	struct kgem_bo *bo;
	int stride, size;
 
	if (DBG_NO_CPU)
		return NULL;
 
	DBG(("%s(%dx%d, bpp=%d)\n", __FUNCTION__, width, height, bpp));
 
	if (kgem->has_llc) {
		bo = kgem_create_2d(kgem, width, height, bpp,
				    I915_TILING_NONE, flags);
		if (bo == NULL)
			return bo;
 
		assert(bo->tiling == I915_TILING_NONE);
		assert_tiling(kgem, bo);
 
		if (kgem_bo_map__cpu(kgem, bo) == NULL) {
			kgem_bo_destroy(kgem, bo);
			return NULL;
		}
 
		return bo;
	}
 
	assert(width > 0 && height > 0);
	stride = ALIGN(width, 2) * bpp >> 3;
	stride = ALIGN(stride, 4);
	size = stride * ALIGN(height, 2);
	assert(size >= PAGE_SIZE);
 
	DBG(("%s: %dx%d, %d bpp, stride=%d\n",
	     __FUNCTION__, width, height, bpp, stride));
 
	bo = search_snoop_cache(kgem, NUM_PAGES(size), 0);
	if (bo) {
		assert(bo->tiling == I915_TILING_NONE);
		assert_tiling(kgem, bo);
		assert(bo->snoop);
		bo->refcnt = 1;
		bo->pitch = stride;
		bo->unique_id = kgem_get_unique_id(kgem);
		return bo;
	}
 
	if (kgem->has_caching) {
		bo = kgem_create_linear(kgem, size, flags);
		if (bo == NULL)
			return NULL;
 
		assert(bo->tiling == I915_TILING_NONE);
		assert_tiling(kgem, bo);
 
		if (!gem_set_caching(kgem->fd, bo->handle, SNOOPED)) {
			kgem_bo_destroy(kgem, bo);
			return NULL;
		}
		bo->snoop = true;
 
		if (kgem_bo_map__cpu(kgem, bo) == NULL) {
			kgem_bo_destroy(kgem, bo);
			return NULL;
		}
 
		bo->pitch = stride;
		bo->unique_id = kgem_get_unique_id(kgem);
		return bo;
	}
 
	if (kgem->has_userptr) {
		void *ptr;
 
		/* XXX */
		//if (posix_memalign(&ptr, 64, ALIGN(size, 64)))
		if (posix_memalign(&ptr, PAGE_SIZE, ALIGN(size, PAGE_SIZE)))
			return NULL;
 
		bo = kgem_create_map(kgem, ptr, size, false);
		if (bo == NULL) {
			free(ptr);
			return NULL;
		}
 
		bo->pitch = stride;
		bo->unique_id = kgem_get_unique_id(kgem);
		return bo;
	}
 
		return NULL;
}
#endif
 
void _kgem_bo_destroy(struct kgem *kgem, struct kgem_bo *bo)
{
	DBG(("%s: handle=%d, proxy? %d\n",
	     __FUNCTION__, bo->handle, bo->proxy != NULL));
 
	if (bo->proxy) {
		_list_del(&bo->vma);
		_list_del(&bo->request);
		if (bo->io && bo->exec == NULL)
			_kgem_bo_delete_buffer(kgem, bo);
		kgem_bo_unref(kgem, bo->proxy);
		kgem_bo_binding_free(kgem, bo);
		free(bo);
		return;
		}
 
	__kgem_bo_destroy(kgem, bo);
}
 
static void __kgem_flush(struct kgem *kgem, struct kgem_bo *bo)
{
	assert(bo->rq);
	assert(bo->exec == NULL);
	assert(bo->needs_flush);
 
	/* The kernel will emit a flush *and* update its own flushing lists. */
	if (!__kgem_busy(kgem, bo->handle))
		__kgem_bo_clear_busy(bo);
 
	DBG(("%s: handle=%d, busy?=%d\n",
	     __FUNCTION__, bo->handle, bo->rq != NULL));
}
 
void kgem_scanout_flush(struct kgem *kgem, struct kgem_bo *bo)
{
	kgem_bo_submit(kgem, bo);
	if (!bo->needs_flush)
		return;
 
	/* If the kernel fails to emit the flush, then it will be forced when
	 * we assume direct access. And as the usual failure is EIO, we do
	 * not actually care.
	 */
	assert(bo->exec == NULL);
	if (bo->rq)
		__kgem_flush(kgem, bo);
 
	/* Whatever actually happens, we can regard the GTT write domain
	 * as being flushed.
	 */
	bo->gtt_dirty = false;
	bo->needs_flush = false;
	bo->domain = DOMAIN_NONE;
}
 
inline static bool needs_semaphore(struct kgem *kgem, struct kgem_bo *bo)
{
	return kgem->nreloc && bo->rq && RQ_RING(bo->rq) != kgem->ring;
}
 
bool kgem_check_bo(struct kgem *kgem, ...)
{
	va_list ap;
	struct kgem_bo *bo;
	int num_exec = 0;
	int num_pages = 0;
	bool flush = false;
 
	va_start(ap, kgem);
	while ((bo = va_arg(ap, struct kgem_bo *))) {
		while (bo->proxy)
			bo = bo->proxy;
		if (bo->exec)
			continue;
 
		if (needs_semaphore(kgem, bo))
			return false;
 
		num_pages += num_pages(bo);
		num_exec++;
 
		flush |= bo->flush;
	}
	va_end(ap);
 
	DBG(("%s: num_pages=+%d, num_exec=+%d\n",
	     __FUNCTION__, num_pages, num_exec));
 
	if (!num_pages)
		return true;
 
	if (kgem_flush(kgem, flush))
		return false;
 
	if (kgem->aperture > kgem->aperture_low &&
	    kgem_ring_is_idle(kgem, kgem->ring)) {
		DBG(("%s: current aperture usage (%d) is greater than low water mark (%d)\n",
		     __FUNCTION__, kgem->aperture, kgem->aperture_low));
		return false;
	}
 
	if (num_pages + kgem->aperture > kgem->aperture_high) {
		DBG(("%s: final aperture usage (%d) is greater than high water mark (%d)\n",
		     __FUNCTION__, num_pages + kgem->aperture, kgem->aperture_high));
		return false;
	}
 
	if (kgem->nexec + num_exec >= KGEM_EXEC_SIZE(kgem)) {
		DBG(("%s: out of exec slots (%d + %d / %d)\n", __FUNCTION__,
		     kgem->nexec, num_exec, KGEM_EXEC_SIZE(kgem)));
		return false;
	}
 
	return true;
}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
uint32_t kgem_add_reloc(struct kgem *kgem,
			uint32_t pos,
			struct kgem_bo *bo,
			uint32_t read_write_domain,
			uint32_t delta)
{
	int index;
 
	DBG(("%s: handle=%d, pos=%d, delta=%d, domains=%08x\n",
	     __FUNCTION__, bo ? bo->handle : 0, pos, delta, read_write_domain));
 
	assert((read_write_domain & 0x7fff) == 0 || bo != NULL);
 
    if( bo != NULL && bo->handle == -2)
    {
   		if (bo->exec == NULL)
			kgem_add_bo(kgem, bo);
 
		if (read_write_domain & 0x7fff && !bo->gpu_dirty) {
			__kgem_bo_mark_dirty(bo);
		}
        return 0;
    };
 
	index = kgem->nreloc++;
	assert(index < ARRAY_SIZE(kgem->reloc));
	kgem->reloc[index].offset = pos * sizeof(kgem->batch[0]);
	if (bo) {
		assert(bo->refcnt);
		while (bo->proxy) {
			DBG(("%s: adding proxy [delta=%d] for handle=%d\n",
			     __FUNCTION__, bo->delta, bo->handle));
			delta += bo->delta;
			assert(bo->handle == bo->proxy->handle);
			/* need to release the cache upon batch submit */
			if (bo->exec == NULL) {
				list_move_tail(&bo->request,
					       &kgem->next_request->buffers);
				bo->rq = MAKE_REQUEST(kgem->next_request,
						      kgem->ring);
				bo->exec = &_kgem_dummy_exec;
		}
 
			if (read_write_domain & 0x7fff && !bo->gpu_dirty)
				__kgem_bo_mark_dirty(bo);
 
			bo = bo->proxy;
			assert(bo->refcnt);
		}
		assert(bo->refcnt);
 
		if (bo->exec == NULL)
			kgem_add_bo(kgem, bo);
		assert(bo->rq == MAKE_REQUEST(kgem->next_request, kgem->ring));
		assert(RQ_RING(bo->rq) == kgem->ring);
 
		if (kgem->gen < 040 && read_write_domain & KGEM_RELOC_FENCED) {
			if (bo->tiling &&
			    (bo->exec->flags & EXEC_OBJECT_NEEDS_FENCE) == 0) {
				assert(kgem->nfence < kgem->fence_max);
				kgem->aperture_fenced +=
					kgem_bo_fenced_size(kgem, bo);
				kgem->nfence++;
			}
			bo->exec->flags |= EXEC_OBJECT_NEEDS_FENCE;
		}
 
		kgem->reloc[index].delta = delta;
		kgem->reloc[index].target_handle = bo->target_handle;
		kgem->reloc[index].presumed_offset = bo->presumed_offset;
 
		if (read_write_domain & 0x7fff && !bo->gpu_dirty) {
			assert(!bo->snoop || kgem->can_blt_cpu);
			__kgem_bo_mark_dirty(bo);
		}
 
		delta += bo->presumed_offset;
	} else {
		kgem->reloc[index].delta = delta;
		kgem->reloc[index].target_handle = ~0U;
		kgem->reloc[index].presumed_offset = 0;
		if (kgem->nreloc__self < 256)
			kgem->reloc__self[kgem->nreloc__self++] = index;
		}
	kgem->reloc[index].read_domains = read_write_domain >> 16;
	kgem->reloc[index].write_domain = read_write_domain & 0x7fff;
 
	return delta;
}
 
static void kgem_trim_vma_cache(struct kgem *kgem, int type, int bucket)
{
	int i, j;
 
	DBG(("%s: type=%d, count=%d (bucket: %d)\n",
	     __FUNCTION__, type, kgem->vma[type].count, bucket));
	if (kgem->vma[type].count <= 0)
	       return;
 
	if (kgem->need_purge)
		kgem_purge_cache(kgem);
 
	/* vma are limited on a per-process basis to around 64k.
	 * This includes all malloc arenas as well as other file
	 * mappings. In order to be fair and not hog the cache,
	 * and more importantly not to exhaust that limit and to
	 * start failing mappings, we keep our own number of open
	 * vma to within a conservative value.
	 */
	i = 0;
	while (kgem->vma[type].count > 0) {
		struct kgem_bo *bo = NULL;
 
		for (j = 0;
		     bo == NULL && j < ARRAY_SIZE(kgem->vma[type].inactive);
		     j++) {
			struct list *head = &kgem->vma[type].inactive[i++%ARRAY_SIZE(kgem->vma[type].inactive)];
			if (!list_is_empty(head))
				bo = list_last_entry(head, struct kgem_bo, vma);
	}
		if (bo == NULL)
			break;
 
		DBG(("%s: discarding inactive %s vma cache for %d\n",
		     __FUNCTION__,
		     IS_CPU_MAP(bo->map) ? "CPU" : "GTT", bo->handle));
		assert(IS_CPU_MAP(bo->map) == type);
		assert(bo->map);
			assert(bo->rq == NULL);
 
		VG(if (type) VALGRIND_MAKE_MEM_NOACCESS(MAP(bo->map), bytes(bo)));
//		munmap(MAP(bo->map), bytes(bo));
		bo->map = NULL;
		list_del(&bo->vma);
		kgem->vma[type].count--;
 
		if (!bo->purged && !kgem_bo_set_purgeable(kgem, bo)) {
			DBG(("%s: freeing unpurgeable old mapping\n",
			     __FUNCTION__));
				kgem_bo_free(kgem, bo);
			}
	}
}
 
void *kgem_bo_map__async(struct kgem *kgem, struct kgem_bo *bo)
{
	void *ptr;
 
	DBG(("%s: handle=%d, offset=%d, tiling=%d, map=%p, domain=%d\n", __FUNCTION__,
	     bo->handle, bo->presumed_offset, bo->tiling, bo->map, bo->domain));
 
	assert(bo->proxy == NULL);
	assert(list_is_empty(&bo->list));
	assert(!IS_USER_MAP(bo->map));
	assert_tiling(kgem, bo);
 
	if (bo->tiling == I915_TILING_NONE && !bo->scanout && kgem->has_llc) {
		DBG(("%s: converting request for GTT map into CPU map\n",
		     __FUNCTION__));
		return kgem_bo_map__cpu(kgem, bo);
	}
 
	if (IS_CPU_MAP(bo->map))
		kgem_bo_release_map(kgem, bo);
 
	ptr = bo->map;
	if (ptr == NULL) {
		assert(kgem_bo_size(bo) <= kgem->aperture_mappable / 2);
 
		kgem_trim_vma_cache(kgem, MAP_GTT, bucket(bo));
 
		ptr = __kgem_bo_map__gtt(kgem, bo);
		if (ptr == NULL)
			return NULL;
 
		/* Cache this mapping to avoid the overhead of an
		 * excruciatingly slow GTT pagefault. This is more an
		 * issue with compositing managers which need to frequently
		 * flush CPU damage to their GPU bo.
		 */
		bo->map = ptr;
		DBG(("%s: caching GTT vma for %d\n", __FUNCTION__, bo->handle));
	}
 
	return ptr;
}
 
void *kgem_bo_map(struct kgem *kgem, struct kgem_bo *bo)
{
	void *ptr;
 
	DBG(("%s: handle=%d, offset=%d, tiling=%d, map=%p, domain=%d\n", __FUNCTION__,
	     bo->handle, bo->presumed_offset, bo->tiling, bo->map, bo->domain));
 
	assert(bo->proxy == NULL);
	assert(list_is_empty(&bo->list));
	assert(!IS_USER_MAP(bo->map));
	assert(bo->exec == NULL);
	assert_tiling(kgem, bo);
 
	if (bo->tiling == I915_TILING_NONE && !bo->scanout &&
	    (kgem->has_llc || bo->domain == DOMAIN_CPU)) {
		DBG(("%s: converting request for GTT map into CPU map\n",
		     __FUNCTION__));
		ptr = kgem_bo_map__cpu(kgem, bo);
		if (ptr)
			kgem_bo_sync__cpu(kgem, bo);
		return ptr;
	}
 
	if (IS_CPU_MAP(bo->map))
		kgem_bo_release_map(kgem, bo);
 
	ptr = bo->map;
	if (ptr == NULL) {
		assert(kgem_bo_size(bo) <= kgem->aperture_mappable / 2);
		assert(kgem->gen != 021 || bo->tiling != I915_TILING_Y);
 
		kgem_trim_vma_cache(kgem, MAP_GTT, bucket(bo));
 
		ptr = __kgem_bo_map__gtt(kgem, bo);
		if (ptr == NULL)
			return NULL;
 
		/* Cache this mapping to avoid the overhead of an
		 * excruciatingly slow GTT pagefault. This is more an
		 * issue with compositing managers which need to frequently
		 * flush CPU damage to their GPU bo.
		 */
		bo->map = ptr;
		DBG(("%s: caching GTT vma for %d\n", __FUNCTION__, bo->handle));
		}
 
	if (bo->domain != DOMAIN_GTT || FORCE_MMAP_SYNC & (1 << DOMAIN_GTT)) {
		struct drm_i915_gem_set_domain set_domain;
 
		DBG(("%s: sync: needs_flush? %d, domain? %d, busy? %d\n", __FUNCTION__,
		     bo->needs_flush, bo->domain, __kgem_busy(kgem, bo->handle)));
 
		/* XXX use PROT_READ to avoid the write flush? */
 
		VG_CLEAR(set_domain);
		set_domain.handle = bo->handle;
		set_domain.read_domains = I915_GEM_DOMAIN_GTT;
		set_domain.write_domain = I915_GEM_DOMAIN_GTT;
		if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain) == 0) {
			kgem_bo_retire(kgem, bo);
			bo->domain = DOMAIN_GTT;
			bo->gtt_dirty = true;
		}
		}
 
	return ptr;
}
 
void *kgem_bo_map__gtt(struct kgem *kgem, struct kgem_bo *bo)
{
	void *ptr;
 
	DBG(("%s: handle=%d, offset=%d, tiling=%d, map=%p, domain=%d\n", __FUNCTION__,
	     bo->handle, bo->presumed_offset, bo->tiling, bo->map, bo->domain));
 
	assert(bo->exec == NULL);
	assert(list_is_empty(&bo->list));
	assert(!IS_USER_MAP(bo->map));
	assert_tiling(kgem, bo);
 
	if (IS_CPU_MAP(bo->map))
		kgem_bo_release_map(kgem, bo);
 
	ptr = bo->map;
	if (ptr == NULL) {
		assert(bytes(bo) <= kgem->aperture_mappable / 4);
 
		kgem_trim_vma_cache(kgem, MAP_GTT, bucket(bo));
 
		ptr = __kgem_bo_map__gtt(kgem, bo);
		if (ptr == NULL)
			return NULL;
 
		/* Cache this mapping to avoid the overhead of an
		 * excruciatingly slow GTT pagefault. This is more an
		 * issue with compositing managers which need to frequently
		 * flush CPU damage to their GPU bo.
		 */
		bo->map = ptr;
		DBG(("%s: caching GTT vma for %d\n", __FUNCTION__, bo->handle));
	}
 
	return ptr;
}
 
void *kgem_bo_map__debug(struct kgem *kgem, struct kgem_bo *bo)
{
	if (bo->map)
		return MAP(bo->map);
 
	kgem_trim_vma_cache(kgem, MAP_GTT, bucket(bo));
	return bo->map = __kgem_bo_map__gtt(kgem, bo);
}
 
void *kgem_bo_map__cpu(struct kgem *kgem, struct kgem_bo *bo)
{
	struct drm_i915_gem_mmap mmap_arg;
 
	DBG(("%s(handle=%d, size=%d, mapped? %d)\n",
	     __FUNCTION__, bo->handle, bytes(bo), (int)__MAP_TYPE(bo->map)));
	assert(!bo->purged);
	assert(list_is_empty(&bo->list));
	assert(bo->proxy == NULL);
 
	if (IS_CPU_MAP(bo->map))
		return MAP(bo->map);
 
	if (bo->map)
		kgem_bo_release_map(kgem, bo);
 
	kgem_trim_vma_cache(kgem, MAP_CPU, bucket(bo));
 
retry:
	VG_CLEAR(mmap_arg);
	mmap_arg.handle = bo->handle;
	mmap_arg.offset = 0;
	mmap_arg.size = bytes(bo);
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MMAP, &mmap_arg)) {
 
		if (__kgem_throttle_retire(kgem, 0))
			goto retry;
 
		if (kgem->need_expire) {
			kgem_cleanup_cache(kgem);
			goto retry;
		}
 
		ErrorF("%s: failed to mmap handle=%d, %d bytes, into CPU domain\n",
		       __FUNCTION__, bo->handle, bytes(bo));
		return NULL;
	}
 
	VG(VALGRIND_MAKE_MEM_DEFINED(mmap_arg.addr_ptr, bytes(bo)));
 
	DBG(("%s: caching CPU vma for %d\n", __FUNCTION__, bo->handle));
	bo->map = MAKE_CPU_MAP(mmap_arg.addr_ptr);
	return (void *)(uintptr_t)mmap_arg.addr_ptr;
}
 
void *__kgem_bo_map__cpu(struct kgem *kgem, struct kgem_bo *bo)
{
	struct drm_i915_gem_mmap mmap_arg;
 
	DBG(("%s(handle=%d, size=%d, mapped? %d)\n",
	     __FUNCTION__, bo->handle, bytes(bo), (int)__MAP_TYPE(bo->map)));
        assert(bo->refcnt);
	assert(!bo->purged);
	assert(list_is_empty(&bo->list));
	assert(bo->proxy == NULL);
 
	if (IS_CPU_MAP(bo->map))
		return MAP(bo->map);
 
retry:
	VG_CLEAR(mmap_arg);
	mmap_arg.handle = bo->handle;
	mmap_arg.offset = 0;
	mmap_arg.size = bytes(bo);
	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MMAP, &mmap_arg)) {
		int err = errno;
 
		assert(err != EINVAL);
 
		if (__kgem_throttle_retire(kgem, 0))
			goto retry;
 
		if (kgem->need_expire) {
			kgem_cleanup_cache(kgem);
			goto retry;
		}
 
		ErrorF("%s: failed to mmap handle=%d, %d bytes, into CPU domain: %d\n",
		       __FUNCTION__, bo->handle, bytes(bo), err);
		return NULL;
	}
 
	VG(VALGRIND_MAKE_MEM_DEFINED(mmap_arg.addr_ptr, bytes(bo)));
	if (bo->map && bo->domain == DOMAIN_CPU) {
		DBG(("%s: discarding GTT vma for %d\n", __FUNCTION__, bo->handle));
		kgem_bo_release_map(kgem, bo);
	}
	if (bo->map == NULL) {
		DBG(("%s: caching CPU vma for %d\n", __FUNCTION__, bo->handle));
		bo->map = MAKE_CPU_MAP(mmap_arg.addr_ptr);
	}
	return (void *)(uintptr_t)mmap_arg.addr_ptr;
}
void kgem_bo_sync__cpu(struct kgem *kgem, struct kgem_bo *bo)
{
	DBG(("%s: handle=%d\n", __FUNCTION__, bo->handle));
	assert(!bo->scanout);
	kgem_bo_submit(kgem, bo);
 
	/* SHM pixmaps use proxies for subpage offsets */
	assert(!bo->purged);
	while (bo->proxy)
		bo = bo->proxy;
	assert(!bo->purged);
 
	if (bo->domain != DOMAIN_CPU || FORCE_MMAP_SYNC & (1 << DOMAIN_CPU)) {
		struct drm_i915_gem_set_domain set_domain;
 
		DBG(("%s: SYNC: handle=%d, needs_flush? %d, domain? %d, busy? %d\n",
		     __FUNCTION__, bo->handle,
		     bo->needs_flush, bo->domain,
		     __kgem_busy(kgem, bo->handle)));
 
		VG_CLEAR(set_domain);
		set_domain.handle = bo->handle;
		set_domain.read_domains = I915_GEM_DOMAIN_CPU;
		set_domain.write_domain = I915_GEM_DOMAIN_CPU;
 
		if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain) == 0) {
			kgem_bo_retire(kgem, bo);
			bo->domain = DOMAIN_CPU;
		}
	}
}
 
void kgem_clear_dirty(struct kgem *kgem)
{
	struct list * const buffers = &kgem->next_request->buffers;
	struct kgem_bo *bo;
 
	list_for_each_entry(bo, buffers, request) {
		if (!bo->gpu_dirty)
			break;
 
		bo->gpu_dirty = false;
	}
}
 
struct kgem_bo *kgem_create_proxy(struct kgem *kgem,
				  struct kgem_bo *target,
				  int offset, int length)
{
	struct kgem_bo *bo;
 
	DBG(("%s: target handle=%d [proxy? %d], offset=%d, length=%d, io=%d\n",
	     __FUNCTION__, target->handle, target->proxy ? target->proxy->delta : -1,
	     offset, length, target->io));
 
	bo = __kgem_bo_alloc(target->handle, length);
	if (bo == NULL)
		return NULL;
 
	bo->unique_id = kgem_get_unique_id(kgem);
	bo->reusable = false;
	bo->size.bytes = length;
 
	bo->io = target->io && target->proxy == NULL;
	bo->gpu_dirty = target->gpu_dirty;
	bo->tiling = target->tiling;
	bo->pitch = target->pitch;
	bo->flush = target->flush;
	bo->snoop = target->snoop;
 
	assert(!bo->scanout);
	bo->proxy = kgem_bo_reference(target);
	bo->delta = offset;
 
	if (target->exec) {
		list_move_tail(&bo->request, &kgem->next_request->buffers);
		bo->exec = &_kgem_dummy_exec;
	}
	bo->rq = target->rq;
 
	return bo;
}
 
#if 0
static struct kgem_buffer *
buffer_alloc(void)
{
	struct kgem_buffer *bo;
 
	bo = malloc(sizeof(*bo));
	if (bo == NULL)
		return NULL;
 
	bo->mem = NULL;
	bo->need_io = false;
	bo->mmapped = true;
 
	return bo;
}
 
static struct kgem_buffer *
buffer_alloc_with_data(int num_pages)
{
	struct kgem_buffer *bo;
 
	bo = malloc(sizeof(*bo) + 2*UPLOAD_ALIGNMENT + num_pages * PAGE_SIZE);
	if (bo == NULL)
		return NULL;
 
	bo->mem = (void *)ALIGN((uintptr_t)bo + sizeof(*bo), UPLOAD_ALIGNMENT);
	bo->mmapped = false;
	return bo;
}
 
static inline bool
use_snoopable_buffer(struct kgem *kgem, uint32_t flags)
{
	if ((flags & KGEM_BUFFER_WRITE) == 0)
		return kgem->gen >= 030;
 
	return true;
}
 
static void
init_buffer_from_bo(struct kgem_buffer *bo, struct kgem_bo *old)
{
	DBG(("%s: reusing handle=%d for buffer\n",
	     __FUNCTION__, old->handle));
 
	assert(old->proxy == NULL);
 
	memcpy(&bo->base, old, sizeof(*old));
	if (old->rq)
		list_replace(&old->request, &bo->base.request);
	else
		list_init(&bo->base.request);
	list_replace(&old->vma, &bo->base.vma);
	list_init(&bo->base.list);
	free(old);
 
	assert(bo->base.tiling == I915_TILING_NONE);
 
	bo->base.refcnt = 1;
}
 
static struct kgem_buffer *
search_snoopable_buffer(struct kgem *kgem, unsigned alloc)
{
	struct kgem_buffer *bo;
	struct kgem_bo *old;
 
	old = search_snoop_cache(kgem, alloc, 0);
	if (old) {
		if (!old->io) {
			bo = buffer_alloc();
			if (bo == NULL)
				return NULL;
 
			init_buffer_from_bo(bo, old);
		} else {
			bo = (struct kgem_buffer *)old;
			bo->base.refcnt = 1;
		}
 
		DBG(("%s: created CPU handle=%d for buffer, size %d\n",
		     __FUNCTION__, bo->base.handle, num_pages(&bo->base)));
 
		assert(bo->base.snoop);
		assert(bo->base.tiling == I915_TILING_NONE);
		assert(num_pages(&bo->base) >= alloc);
		assert(bo->mmapped == true);
		assert(bo->need_io == false);
 
		bo->mem = kgem_bo_map__cpu(kgem, &bo->base);
		if (bo->mem == NULL) {
			bo->base.refcnt = 0;
			kgem_bo_free(kgem, &bo->base);
			bo = NULL;
		}
 
		return bo;
	}
 
	return NULL;
}
 
static struct kgem_buffer *
create_snoopable_buffer(struct kgem *kgem, unsigned alloc)
{
	struct kgem_buffer *bo;
	uint32_t handle;
 
	if (kgem->has_llc) {
		struct kgem_bo *old;
 
		bo = buffer_alloc();
		if (bo == NULL)
			return NULL;
 
		old = search_linear_cache(kgem, alloc,
					 CREATE_INACTIVE | CREATE_CPU_MAP | CREATE_EXACT);
		if (old) {
			init_buffer_from_bo(bo, old);
		} else {
			handle = gem_create(kgem->fd, alloc);
			if (handle == 0) {
				free(bo);
				return NULL;
			}
 
			debug_alloc(kgem, alloc);
			__kgem_bo_init(&bo->base, handle, alloc);
			DBG(("%s: created CPU (LLC) handle=%d for buffer, size %d\n",
			     __FUNCTION__, bo->base.handle, alloc));
		}
 
		assert(bo->base.refcnt == 1);
		assert(bo->mmapped == true);
		assert(bo->need_io == false);
 
		bo->mem = kgem_bo_map__cpu(kgem, &bo->base);
		if (bo->mem != NULL)
			return bo;
 
		bo->base.refcnt = 0; /* for valgrind */
		kgem_bo_free(kgem, &bo->base);
	}
 
	if (kgem->has_caching) {
		struct kgem_bo *old;
 
		bo = buffer_alloc();
		if (bo == NULL)
			return NULL;
 
		old = search_linear_cache(kgem, alloc,
					 CREATE_INACTIVE | CREATE_CPU_MAP | CREATE_EXACT);
		if (old) {
			init_buffer_from_bo(bo, old);
		} else {
			handle = gem_create(kgem->fd, alloc);
			if (handle == 0) {
				free(bo);
				return NULL;
			}
 
			debug_alloc(kgem, alloc);
			__kgem_bo_init(&bo->base, handle, alloc);
			DBG(("%s: created CPU handle=%d for buffer, size %d\n",
			     __FUNCTION__, bo->base.handle, alloc));
		}
 
		assert(bo->base.refcnt == 1);
		assert(bo->mmapped == true);
		assert(bo->need_io == false);
 
		if (!gem_set_caching(kgem->fd, bo->base.handle, SNOOPED))
			goto free_caching;
 
		bo->base.snoop = true;
 
		bo->mem = kgem_bo_map__cpu(kgem, &bo->base);
		if (bo->mem == NULL)
			goto free_caching;
 
		return bo;
 
free_caching:
		bo->base.refcnt = 0; /* for valgrind */
		kgem_bo_free(kgem, &bo->base);
	}
 
	if (kgem->has_userptr) {
		bo = buffer_alloc();
		if (bo == NULL)
			return NULL;
 
		//if (posix_memalign(&ptr, 64, ALIGN(size, 64)))
		if (posix_memalign(&bo->mem, PAGE_SIZE, alloc * PAGE_SIZE)) {
			free(bo);
			return NULL;
		}
 
		handle = gem_userptr(kgem->fd, bo->mem, alloc * PAGE_SIZE, false);
		if (handle == 0) {
			free(bo->mem);
			free(bo);
			return NULL;
		}
 
		debug_alloc(kgem, alloc);
		__kgem_bo_init(&bo->base, handle, alloc);
		DBG(("%s: created snoop handle=%d for buffer\n",
		     __FUNCTION__, bo->base.handle));
 
		assert(bo->mmapped == true);
		assert(bo->need_io == false);
 
		bo->base.refcnt = 1;
		bo->base.snoop = true;
		bo->base.map = MAKE_USER_MAP(bo->mem);
 
		return bo;
	}
 
	return NULL;
}
 
struct kgem_bo *kgem_create_buffer(struct kgem *kgem,
				   uint32_t size, uint32_t flags,
				   void **ret)
{
	struct kgem_buffer *bo;
	unsigned offset, alloc;
	struct kgem_bo *old;
 
	DBG(("%s: size=%d, flags=%x [write?=%d, inplace?=%d, last?=%d]\n",
	     __FUNCTION__, size, flags,
	     !!(flags & KGEM_BUFFER_WRITE),
	     !!(flags & KGEM_BUFFER_INPLACE),
	     !!(flags & KGEM_BUFFER_LAST)));
	assert(size);
	/* we should never be asked to create anything TOO large */
	assert(size <= kgem->max_object_size);
 
#if !DBG_NO_UPLOAD_CACHE
	list_for_each_entry(bo, &kgem->batch_buffers, base.list) {
		assert(bo->base.io);
		assert(bo->base.refcnt >= 1);
 
		/* We can reuse any write buffer which we can fit */
		if (flags == KGEM_BUFFER_LAST &&
		    bo->write == KGEM_BUFFER_WRITE &&
		    bo->base.refcnt == 1 && !bo->mmapped &&
		    size <= bytes(&bo->base)) {
			DBG(("%s: reusing write buffer for read of %d bytes? used=%d, total=%d\n",
			     __FUNCTION__, size, bo->used, bytes(&bo->base)));
			gem_write(kgem->fd, bo->base.handle,
				  0, bo->used, bo->mem);
			kgem_buffer_release(kgem, bo);
			bo->need_io = 0;
			bo->write = 0;
			offset = 0;
			bo->used = size;
			goto done;
		}
 
		if (flags & KGEM_BUFFER_WRITE) {
			if ((bo->write & KGEM_BUFFER_WRITE) == 0 ||
			    (((bo->write & ~flags) & KGEM_BUFFER_INPLACE) &&
			     !bo->base.snoop)) {
				DBG(("%s: skip write %x buffer, need %x\n",
				     __FUNCTION__, bo->write, flags));
				continue;
			}
			assert(bo->mmapped || bo->need_io);
		} else {
			if (bo->write & KGEM_BUFFER_WRITE) {
				DBG(("%s: skip write %x buffer, need %x\n",
				     __FUNCTION__, bo->write, flags));
				continue;
			}
		}
 
		if (bo->used + size <= bytes(&bo->base)) {
			DBG(("%s: reusing buffer? used=%d + size=%d, total=%d\n",
			     __FUNCTION__, bo->used, size, bytes(&bo->base)));
			offset = bo->used;
			bo->used += size;
			goto done;
		}
	}
 
	if (flags & KGEM_BUFFER_WRITE) {
		list_for_each_entry(bo, &kgem->active_buffers, base.list) {
			assert(bo->base.io);
			assert(bo->base.refcnt >= 1);
			assert(bo->mmapped);
			assert(!IS_CPU_MAP(bo->base.map) || kgem->has_llc || bo->base.snoop);
 
			if (!kgem->has_llc && (bo->write & ~flags) & KGEM_BUFFER_INPLACE) {
				DBG(("%s: skip write %x buffer, need %x\n",
				     __FUNCTION__, bo->write, flags));
				continue;
			}
 
			if (bo->used + size <= bytes(&bo->base)) {
				DBG(("%s: reusing buffer? used=%d + size=%d, total=%d\n",
				     __FUNCTION__, bo->used, size, bytes(&bo->base)));
				offset = bo->used;
				bo->used += size;
				list_move(&bo->base.list, &kgem->batch_buffers);
				goto done;
			}
		}
	}
#endif
 
#if !DBG_NO_MAP_UPLOAD
	/* Be a little more generous and hope to hold fewer mmappings */
	alloc = ALIGN(2*size, kgem->buffer_size);
	if (alloc > MAX_CACHE_SIZE)
		alloc = ALIGN(size, kgem->buffer_size);
	if (alloc > MAX_CACHE_SIZE)
		alloc = PAGE_ALIGN(size);
	assert(alloc);
 
	if (alloc > kgem->aperture_mappable / 4)
		flags &= ~KGEM_BUFFER_INPLACE;
	alloc /= PAGE_SIZE;
 
	if (kgem->has_llc &&
	    (flags & KGEM_BUFFER_WRITE_INPLACE) != KGEM_BUFFER_WRITE_INPLACE) {
		bo = buffer_alloc();
		if (bo == NULL)
			goto skip_llc;
 
		old = NULL;
		if ((flags & KGEM_BUFFER_WRITE) == 0)
			old = search_linear_cache(kgem, alloc, CREATE_CPU_MAP);
		if (old == NULL)
			old = search_linear_cache(kgem, alloc, CREATE_INACTIVE | CREATE_CPU_MAP);
		if (old == NULL)
			old = search_linear_cache(kgem, NUM_PAGES(size), CREATE_INACTIVE | CREATE_CPU_MAP);
		if (old) {
			DBG(("%s: found LLC handle=%d for buffer\n",
			     __FUNCTION__, old->handle));
 
			init_buffer_from_bo(bo, old);
		} else {
			uint32_t handle = gem_create(kgem->fd, alloc);
			if (handle == 0) {
				free(bo);
				goto skip_llc;
			}
			__kgem_bo_init(&bo->base, handle, alloc);
			DBG(("%s: created LLC handle=%d for buffer\n",
			     __FUNCTION__, bo->base.handle));
 
			debug_alloc(kgem, alloc);
		}
 
		assert(bo->mmapped);
		assert(!bo->need_io);
 
		bo->mem = kgem_bo_map__cpu(kgem, &bo->base);
		if (bo->mem) {
			if (flags & KGEM_BUFFER_WRITE)
				kgem_bo_sync__cpu(kgem, &bo->base);
			flags &= ~KGEM_BUFFER_INPLACE;
			goto init;
		} else {
			bo->base.refcnt = 0; /* for valgrind */
			kgem_bo_free(kgem, &bo->base);
		}
	}
skip_llc:
 
	if ((flags & KGEM_BUFFER_WRITE_INPLACE) == KGEM_BUFFER_WRITE_INPLACE) {
		/* The issue with using a GTT upload buffer is that we may
		 * cause eviction-stalls in order to free up some GTT space.
		 * An is-mappable? ioctl could help us detect when we are
		 * about to block, or some per-page magic in the kernel.
		 *
		 * XXX This is especially noticeable on memory constrained
		 * devices like gen2 or with relatively slow gpu like i3.
		 */
		DBG(("%s: searching for an inactive GTT map for upload\n",
		     __FUNCTION__));
		old = search_linear_cache(kgem, alloc,
					  CREATE_EXACT | CREATE_INACTIVE | CREATE_GTT_MAP);
#if HAVE_I915_GEM_BUFFER_INFO
		if (old) {
			struct drm_i915_gem_buffer_info info;
 
			/* An example of such a non-blocking ioctl might work */
 
			VG_CLEAR(info);
			info.handle = handle;
			if (drmIoctl(kgem->fd,
				     DRM_IOCTL_I915_GEM_BUFFER_INFO,
				     &fino) == 0) {
				old->presumed_offset = info.addr;
				if ((info.flags & I915_GEM_MAPPABLE) == 0) {
					kgem_bo_move_to_inactive(kgem, old);
					old = NULL;
				}
			}
		}
#endif
		if (old == NULL)
			old = search_linear_cache(kgem, NUM_PAGES(size),
						  CREATE_EXACT | CREATE_INACTIVE | CREATE_GTT_MAP);
		if (old == NULL) {
			old = search_linear_cache(kgem, alloc, CREATE_INACTIVE);
			if (old && !__kgem_bo_is_mappable(kgem, old)) {
				_kgem_bo_destroy(kgem, old);
				old = NULL;
			}
		}
		if (old) {
			DBG(("%s: reusing handle=%d for buffer\n",
			     __FUNCTION__, old->handle));
			assert(__kgem_bo_is_mappable(kgem, old));
			assert(!old->snoop);
			assert(old->rq == NULL);
 
			bo = buffer_alloc();
			if (bo == NULL)
				return NULL;
 
			init_buffer_from_bo(bo, old);
			assert(num_pages(&bo->base) >= NUM_PAGES(size));
 
			assert(bo->mmapped);
			assert(bo->base.refcnt == 1);
 
			bo->mem = kgem_bo_map(kgem, &bo->base);
			if (bo->mem) {
				if (IS_CPU_MAP(bo->base.map))
					flags &= ~KGEM_BUFFER_INPLACE;
				goto init;
			} else {
				bo->base.refcnt = 0;
				kgem_bo_free(kgem, &bo->base);
			}
		}
	}
#else
	flags &= ~KGEM_BUFFER_INPLACE;
#endif
	/* Be more parsimonious with pwrite/pread/cacheable buffers */
	if ((flags & KGEM_BUFFER_INPLACE) == 0)
		alloc = NUM_PAGES(size);
 
	if (use_snoopable_buffer(kgem, flags)) {
		bo = search_snoopable_buffer(kgem, alloc);
		if (bo) {
			if (flags & KGEM_BUFFER_WRITE)
				kgem_bo_sync__cpu(kgem, &bo->base);
			flags &= ~KGEM_BUFFER_INPLACE;
			goto init;
		}
 
		if ((flags & KGEM_BUFFER_INPLACE) == 0) {
			bo = create_snoopable_buffer(kgem, alloc);
			if (bo)
				goto init;
		}
	}
 
	flags &= ~KGEM_BUFFER_INPLACE;
 
	old = NULL;
	if ((flags & KGEM_BUFFER_WRITE) == 0)
		old = search_linear_cache(kgem, alloc, 0);
	if (old == NULL)
		old = search_linear_cache(kgem, alloc, CREATE_INACTIVE);
	if (old) {
		DBG(("%s: reusing ordinary handle %d for io\n",
		     __FUNCTION__, old->handle));
		bo = buffer_alloc_with_data(num_pages(old));
		if (bo == NULL)
			return NULL;
 
		init_buffer_from_bo(bo, old);
		bo->need_io = flags & KGEM_BUFFER_WRITE;
	} else {
		unsigned hint;
 
		if (use_snoopable_buffer(kgem, flags)) {
			bo = create_snoopable_buffer(kgem, alloc);
			if (bo)
				goto init;
		}
 
		bo = buffer_alloc();
		if (bo == NULL)
			return NULL;
 
		hint = CREATE_INACTIVE;
		if (flags & KGEM_BUFFER_WRITE)
			hint |= CREATE_CPU_MAP;
		old = search_linear_cache(kgem, alloc, hint);
		if (old) {
			DBG(("%s: reusing handle=%d for buffer\n",
			     __FUNCTION__, old->handle));
 
			init_buffer_from_bo(bo, old);
		} else {
			uint32_t handle = gem_create(kgem->fd, alloc);
			if (handle == 0) {
				free(bo);
				return NULL;
			}
 
			DBG(("%s: created handle=%d for buffer\n",
			     __FUNCTION__, handle));
 
			__kgem_bo_init(&bo->base, handle, alloc);
			debug_alloc(kgem, alloc * PAGE_SIZE);
		}
 
		assert(bo->mmapped);
		assert(!bo->need_io);
		assert(bo->base.refcnt == 1);
 
		if (flags & KGEM_BUFFER_WRITE) {
			bo->mem = kgem_bo_map__cpu(kgem, &bo->base);
			if (bo->mem != NULL) {
				kgem_bo_sync__cpu(kgem, &bo->base);
				goto init;
			}
		}
 
		DBG(("%s: failing back to new pwrite buffer\n", __FUNCTION__));
		old = &bo->base;
		bo = buffer_alloc_with_data(num_pages(old));
		if (bo == NULL) {
			old->refcnt= 0;
			kgem_bo_free(kgem, old);
			return NULL;
		}
 
		init_buffer_from_bo(bo, old);
 
		assert(bo->mem);
		assert(!bo->mmapped);
		assert(bo->base.refcnt == 1);
 
		bo->need_io = flags & KGEM_BUFFER_WRITE;
	}
init:
	bo->base.io = true;
	assert(bo->base.refcnt == 1);
	assert(num_pages(&bo->base) >= NUM_PAGES(size));
	assert(!bo->need_io || !bo->base.needs_flush);
	assert(!bo->need_io || bo->base.domain != DOMAIN_GPU);
	assert(bo->mem);
	assert(!bo->mmapped || bo->base.map != NULL);
 
	bo->used = size;
	bo->write = flags & KGEM_BUFFER_WRITE_INPLACE;
	offset = 0;
 
	assert(list_is_empty(&bo->base.list));
	list_add(&bo->base.list, &kgem->batch_buffers);
 
	DBG(("%s(pages=%d [%d]) new handle=%d, used=%d, write=%d\n",
	     __FUNCTION__, num_pages(&bo->base), alloc, bo->base.handle, bo->used, bo->write));
 
done:
	bo->used = ALIGN(bo->used, UPLOAD_ALIGNMENT);
	assert(bo->mem);
	*ret = (char *)bo->mem + offset;
	return kgem_create_proxy(kgem, &bo->base, offset, size);
}
 
bool kgem_buffer_is_inplace(struct kgem_bo *_bo)
{
	struct kgem_buffer *bo = (struct kgem_buffer *)_bo->proxy;
	return bo->write & KGEM_BUFFER_WRITE_INPLACE;
}
 
struct kgem_bo *kgem_create_buffer_2d(struct kgem *kgem,
				      int width, int height, int bpp,
				      uint32_t flags,
				      void **ret)
{
	struct kgem_bo *bo;
	int stride;
 
	assert(width > 0 && height > 0);
	assert(ret != NULL);
	stride = ALIGN(width, 2) * bpp >> 3;
	stride = ALIGN(stride, 4);
 
	DBG(("%s: %dx%d, %d bpp, stride=%d\n",
	     __FUNCTION__, width, height, bpp, stride));
 
	bo = kgem_create_buffer(kgem, stride * ALIGN(height, 2), flags, ret);
	if (bo == NULL) {
		DBG(("%s: allocation failure for upload buffer\n",
		     __FUNCTION__));
		return NULL;
	}
	assert(*ret != NULL);
	assert(bo->proxy != NULL);
 
	if (height & 1) {
		struct kgem_buffer *io = (struct kgem_buffer *)bo->proxy;
		int min;
 
		assert(io->used);
 
		/* Having padded this surface to ensure that accesses to
		 * the last pair of rows is valid, remove the padding so
		 * that it can be allocated to other pixmaps.
		 */
		min = bo->delta + height * stride;
		min = ALIGN(min, UPLOAD_ALIGNMENT);
		if (io->used != min) {
			DBG(("%s: trimming buffer from %d to %d\n",
			     __FUNCTION__, io->used, min));
			io->used = min;
		}
		bo->size.bytes -= stride;
	}
 
	bo->map = MAKE_CPU_MAP(*ret);
	bo->pitch = stride;
	bo->unique_id = kgem_get_unique_id(kgem);
	return bo;
}
 
struct kgem_bo *kgem_upload_source_image(struct kgem *kgem,
					 const void *data,
					 const BoxRec *box,
					 int stride, int bpp)
{
	int width  = box->x2 - box->x1;
	int height = box->y2 - box->y1;
	struct kgem_bo *bo;
	void *dst;
 
	if (!kgem_can_create_2d(kgem, width, height, bpp))
		return NULL;
 
	DBG(("%s : (%d, %d), (%d, %d), stride=%d, bpp=%d\n",
	     __FUNCTION__, box->x1, box->y1, box->x2, box->y2, stride, bpp));
 
	assert(data);
	assert(width > 0);
	assert(height > 0);
	assert(stride);
	assert(bpp);
 
	bo = kgem_create_buffer_2d(kgem,
				   width, height, bpp,
				   KGEM_BUFFER_WRITE_INPLACE, &dst);
	if (bo)
		memcpy_blt(data, dst, bpp,
			   stride, bo->pitch,
			   box->x1, box->y1,
			   0, 0,
			   width, height);
 
	return bo;
}
 
void kgem_proxy_bo_attach(struct kgem_bo *bo,
			  struct kgem_bo **ptr)
{
	DBG(("%s: handle=%d\n", __FUNCTION__, bo->handle));
	assert(bo->map == NULL || IS_CPU_MAP(bo->map));
	assert(bo->proxy);
	list_add(&bo->vma, &bo->proxy->vma);
	bo->map = ptr;
	*ptr = kgem_bo_reference(bo);
}
 
void kgem_buffer_read_sync(struct kgem *kgem, struct kgem_bo *_bo)
{
	struct kgem_buffer *bo;
	uint32_t offset = _bo->delta, length = _bo->size.bytes;
 
	/* We expect the caller to have already submitted the batch */
	assert(_bo->io);
	assert(_bo->exec == NULL);
	assert(_bo->rq == NULL);
	assert(_bo->proxy);
 
	_bo = _bo->proxy;
	assert(_bo->proxy == NULL);
	assert(_bo->exec == NULL);
 
	bo = (struct kgem_buffer *)_bo;
 
	DBG(("%s(offset=%d, length=%d, snooped=%d)\n", __FUNCTION__,
	     offset, length, bo->base.snoop));
 
	if (bo->mmapped) {
		struct drm_i915_gem_set_domain set_domain;
 
		DBG(("%s: sync: needs_flush? %d, domain? %d, busy? %d\n",
		     __FUNCTION__,
		     bo->base.needs_flush,
		     bo->base.domain,
		     __kgem_busy(kgem, bo->base.handle)));
 
		assert(!IS_CPU_MAP(bo->base.map) || bo->base.snoop || kgem->has_llc);
 
		VG_CLEAR(set_domain);
		set_domain.handle = bo->base.handle;
		set_domain.write_domain = 0;
		set_domain.read_domains =
			IS_CPU_MAP(bo->base.map) ? I915_GEM_DOMAIN_CPU : I915_GEM_DOMAIN_GTT;
 
		if (drmIoctl(kgem->fd,
			     DRM_IOCTL_I915_GEM_SET_DOMAIN, &set_domain))
			return;
	} else {
		if (gem_read(kgem->fd,
			     bo->base.handle, (char *)bo->mem+offset,
			     offset, length))
			return;
	}
	kgem_bo_retire(kgem, &bo->base);
	bo->base.domain = DOMAIN_NONE;
}
#endif
 
uint32_t kgem_bo_get_binding(struct kgem_bo *bo, uint32_t format)
{
	struct kgem_bo_binding *b;
 
	for (b = &bo->binding; b && b->offset; b = b->next)
		if (format == b->format)
			return b->offset;
 
	return 0;
}
 
void kgem_bo_set_binding(struct kgem_bo *bo, uint32_t format, uint16_t offset)
{
	struct kgem_bo_binding *b;
 
	for (b = &bo->binding; b; b = b->next) {
		if (b->offset)
			continue;
 
		b->offset = offset;
		b->format = format;
 
		if (b->next)
			b->next->offset = 0;
 
		return;
	}
 
	b = malloc(sizeof(*b));
	if (b) {
		b->next = bo->binding.next;
		b->format = format;
		b->offset = offset;
		bo->binding.next = b;
	}
}
 
int kgem_init_fb(struct kgem *kgem, struct sna_fb *fb)
{
    struct kgem_bo *bo;
    size_t size;
    int ret;
 
	ret = drmIoctl(kgem->fd, SRV_FBINFO, fb);
	if( ret != 0 )
	    return 0;
 
    size = fb->pitch * fb->height / PAGE_SIZE;
 
  	bo = __kgem_bo_alloc(-2, size);
	if (!bo) {
		return 0;
	}
 
	bo->domain    = DOMAIN_GTT;
	bo->unique_id = kgem_get_unique_id(kgem);
	bo->pitch     = fb->pitch;
    bo->tiling    = I915_TILING_X;
    bo->scanout   = 1;
	fb->fb_bo     = bo;
 
//    printf("fb width %d height %d pitch %d bo %p\n",
//            fb->width, fb->height, fb->pitch, fb->fb_bo);
 
    return 1;
};
 
 
int kgem_update_fb(struct kgem *kgem, struct sna_fb *fb)
{
    struct kgem_bo *bo;
    size_t size;
    int ret;
 
    bo = fb->fb_bo;
 
	ret = drmIoctl(kgem->fd, SRV_FBINFO, fb);
	if( ret != 0 )
	    return 0;
 
	fb->fb_bo = bo;
 
    size = fb->pitch * fb->height / PAGE_SIZE;
 
    if((size != bo->size.pages.count) ||
       (fb->pitch != bo->pitch))
    {
        bo->size.pages.count = size;
	    bo->pitch     = fb->pitch;
 
    printf("fb width %d height %d pitch %d bo %p\n",
            fb->width, fb->height, fb->pitch, fb->fb_bo);
 
        return 1;
    }
 
    return 0;
};
 
void sna_bo_destroy(struct kgem *kgem, struct kgem_bo *bo)
{
    kgem_bo_destroy(kgem, bo);
    kgem_bo_free(kgem, bo);
}
 
 
void kgem_close_batches(struct kgem *kgem)
{
    int n;
 
	for (n = 0; n < ARRAY_SIZE(kgem->pinned_batches); n++) {
		while (!list_is_empty(&kgem->pinned_batches[n])) {
			kgem_bo_destroy(kgem,
					list_first_entry(&kgem->pinned_batches[n],
							 struct kgem_bo, list));
		}
	}
};
 
struct kgem_bo *kgem_bo_from_handle(struct kgem *kgem, int handle,
                        int pitch, int height)
{
	struct kgem_bo *bo;
    int size;
 
    size = pitch * height / PAGE_SIZE;
 
  	bo = __kgem_bo_alloc(handle, size);
    if(bo == NULL)
        return NULL;
 
	bo->domain    = DOMAIN_GTT;
	bo->unique_id = kgem_get_unique_id(kgem);
	bo->pitch     = pitch;
    bo->tiling    = I915_TILING_X;
    bo->scanout   = 0;
 
    return bo;
}
>
>
#define>
#define>
struct>
struct>
#define>
#define>
#define>
#define>

Rev 4251	Rev 4281
1	/*	1	/*
2	* Copyright (c) 2011 Intel Corporation	2	* Copyright (c) 2011 Intel Corporation
3	*	3	*
4	* Permission is hereby granted, free of charge, to any person obtaining a	4	* Permission is hereby granted, free of charge, to any person obtaining a
5	* copy of this software and associated documentation files (the "Software"),	5	* copy of this software and associated documentation files (the "Software"),
6	* to deal in the Software without restriction, including without limitation	6	* to deal in the Software without restriction, including without limitation
7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
8	* and/or sell copies of the Software, and to permit persons to whom the	8	* and/or sell copies of the Software, and to permit persons to whom the
9	* Software is furnished to do so, subject to the following conditions:	9	* Software is furnished to do so, subject to the following conditions:
10	*	10	*
11	* The above copyright notice and this permission notice (including the next	11	* The above copyright notice and this permission notice (including the next
12	* paragraph) shall be included in all copies or substantial portions of the	12	* paragraph) shall be included in all copies or substantial portions of the
13	* Software.	13	* Software.
14	*	14	*
15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE	20	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21	* SOFTWARE.	21	* SOFTWARE.
22	*	22	*
23	* Authors:	23	* Authors:
24	* Chris Wilson	24	* Chris Wilson
25	*	25	*
26	*/	26	*/
27		27
28	#ifdef HAVE_CONFIG_H	28	#ifdef HAVE_CONFIG_H
29	#include "config.h"	29	#include "config.h"
30	#endif	30	#endif
31		31
32	#include "sna.h"	32	#include "sna.h"
33	#include "sna_reg.h"	33	#include "sna_reg.h"
34		34
35	#include	35	#include
36	#include	36	#include
37	#include	37	#include
38		38
39	#ifdef HAVE_VALGRIND	39	#ifdef HAVE_VALGRIND
40	#include	40	#include
41	#include	41	#include
42	#endif	42	#endif
43		43
44	#ifdef HAVE_STRUCT_SYSINFO_TOTALRAM	44	#ifdef HAVE_STRUCT_SYSINFO_TOTALRAM
45	#include	45	#include
46	#endif	46	#endif
47		47
48	#include "sna_cpuid.h"	48	#include "sna_cpuid.h"
49		49
50	static struct kgem_bo *	50	static struct kgem_bo *
51	search_linear_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags);	51	search_linear_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags);
52		52
53	static struct kgem_bo *	53	static struct kgem_bo *
54	search_snoop_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags);	54	search_snoop_cache(struct kgem *kgem, unsigned int num_pages, unsigned flags);
55		55
56	#define DBG_NO_HW 0	56	#define DBG_NO_HW 0
57	#define DBG_NO_TILING 0	57	#define DBG_NO_TILING 0
58	#define DBG_NO_CACHE 0	58	#define DBG_NO_CACHE 0
59	#define DBG_NO_CACHE_LEVEL 0	59	#define DBG_NO_CACHE_LEVEL 0
60	#define DBG_NO_CPU 0	60	#define DBG_NO_CPU 0
61	#define DBG_NO_CREATE2 1	61	#define DBG_NO_CREATE2 1
62	#define DBG_NO_USERPTR 0	62	#define DBG_NO_USERPTR 0
63	#define DBG_NO_UNSYNCHRONIZED_USERPTR 0	63	#define DBG_NO_UNSYNCHRONIZED_USERPTR 0
64	#define DBG_NO_LLC 0	64	#define DBG_NO_LLC 0
65	#define DBG_NO_SEMAPHORES 0	65	#define DBG_NO_SEMAPHORES 0
66	#define DBG_NO_MADV 1	66	#define DBG_NO_MADV 1
67	#define DBG_NO_UPLOAD_CACHE 0	67	#define DBG_NO_UPLOAD_CACHE 0
68	#define DBG_NO_UPLOAD_ACTIVE 0	68	#define DBG_NO_UPLOAD_ACTIVE 0
69	#define DBG_NO_MAP_UPLOAD 0	69	#define DBG_NO_MAP_UPLOAD 0
70	#define DBG_NO_RELAXED_FENCING 0	70	#define DBG_NO_RELAXED_FENCING 0
71	#define DBG_NO_SECURE_BATCHES 0	71	#define DBG_NO_SECURE_BATCHES 0
72	#define DBG_NO_PINNED_BATCHES 0	72	#define DBG_NO_PINNED_BATCHES 0
73	#define DBG_NO_FAST_RELOC 0	73	#define DBG_NO_FAST_RELOC 0
74	#define DBG_NO_HANDLE_LUT 1	74	#define DBG_NO_HANDLE_LUT 1
75	#define DBG_NO_WT 0	75	#define DBG_NO_WT 0
76	#define DBG_DUMP 0	76	#define DBG_DUMP 0
77		77
78	#define FORCE_MMAP_SYNC 0 /* ((1 << DOMAIN_CPU) \| (1 << DOMAIN_GTT)) */	78	#define FORCE_MMAP_SYNC 0 /* ((1 << DOMAIN_CPU) \| (1 << DOMAIN_GTT)) */
79		79
80	#ifndef DEBUG_SYNC	80	#ifndef DEBUG_SYNC
81	#define DEBUG_SYNC 0	81	#define DEBUG_SYNC 0
82	#endif	82	#endif
83		83
84		84
85	#if 0	85	#if 0
86	#define ASSERT_IDLE(kgem__, handle__) assert(!__kgem_busy(kgem__, handle__))	86	#define ASSERT_IDLE(kgem__, handle__) assert(!__kgem_busy(kgem__, handle__))
87	#define ASSERT_MAYBE_IDLE(kgem__, handle__, expect__) assert(!(expect__) \|\| !__kgem_busy(kgem__, handle__))	87	#define ASSERT_MAYBE_IDLE(kgem__, handle__, expect__) assert(!(expect__) \|\| !__kgem_busy(kgem__, handle__))
88	#else	88	#else
89	#define ASSERT_IDLE(kgem__, handle__)	89	#define ASSERT_IDLE(kgem__, handle__)
90	#define ASSERT_MAYBE_IDLE(kgem__, handle__, expect__)	90	#define ASSERT_MAYBE_IDLE(kgem__, handle__, expect__)
91	#endif	91	#endif
92		92
93	/* Worst case seems to be 965gm where we cannot write within a cacheline that	93	/* Worst case seems to be 965gm where we cannot write within a cacheline that
94	* is being simultaneously being read by the GPU, or within the sampler	94	* is being simultaneously being read by the GPU, or within the sampler
95	* prefetch. In general, the chipsets seem to have a requirement that sampler	95	* prefetch. In general, the chipsets seem to have a requirement that sampler
96	* offsets be aligned to a cacheline (64 bytes).	96	* offsets be aligned to a cacheline (64 bytes).
97	*/	97	*/
98	#define UPLOAD_ALIGNMENT 128	98	#define UPLOAD_ALIGNMENT 128
99		99
100	#define PAGE_ALIGN(x) ALIGN(x, PAGE_SIZE)	100	#define PAGE_ALIGN(x) ALIGN(x, PAGE_SIZE)
101	#define NUM_PAGES(x) (((x) + PAGE_SIZE-1) / PAGE_SIZE)	101	#define NUM_PAGES(x) (((x) + PAGE_SIZE-1) / PAGE_SIZE)
102		102
103	#define MAX_GTT_VMA_CACHE 512	103	#define MAX_GTT_VMA_CACHE 512
104	#define MAX_CPU_VMA_CACHE INT16_MAX	104	#define MAX_CPU_VMA_CACHE INT16_MAX
105	#define MAP_PRESERVE_TIME 10	105	#define MAP_PRESERVE_TIME 10
106		106
107	#define MAKE_CPU_MAP(ptr) ((void*)((uintptr_t)(ptr) \| 1))	107	#define MAKE_CPU_MAP(ptr) ((void*)((uintptr_t)(ptr) \| 1))
108	#define MAKE_USER_MAP(ptr) ((void*)((uintptr_t)(ptr) \| 3))	108	#define MAKE_USER_MAP(ptr) ((void*)((uintptr_t)(ptr) \| 3))
109	#define IS_USER_MAP(ptr) ((uintptr_t)(ptr) & 2)	109	#define IS_USER_MAP(ptr) ((uintptr_t)(ptr) & 2)
110	#define __MAP_TYPE(ptr) ((uintptr_t)(ptr) & 3)	110	#define __MAP_TYPE(ptr) ((uintptr_t)(ptr) & 3)
111		111
112	#define MAKE_REQUEST(rq, ring) ((struct kgem_request *)((uintptr_t)(rq) \| (ring)))	112	#define MAKE_REQUEST(rq, ring) ((struct kgem_request *)((uintptr_t)(rq) \| (ring)))
113		113
114	#define LOCAL_I915_PARAM_HAS_BLT 11	114	#define LOCAL_I915_PARAM_HAS_BLT 11
115	#define LOCAL_I915_PARAM_HAS_RELAXED_FENCING 12	115	#define LOCAL_I915_PARAM_HAS_RELAXED_FENCING 12
116	#define LOCAL_I915_PARAM_HAS_RELAXED_DELTA 15	116	#define LOCAL_I915_PARAM_HAS_RELAXED_DELTA 15
117	#define LOCAL_I915_PARAM_HAS_SEMAPHORES 20	117	#define LOCAL_I915_PARAM_HAS_SEMAPHORES 20
118	#define LOCAL_I915_PARAM_HAS_SECURE_BATCHES 23	118	#define LOCAL_I915_PARAM_HAS_SECURE_BATCHES 23
119	#define LOCAL_I915_PARAM_HAS_PINNED_BATCHES 24	119	#define LOCAL_I915_PARAM_HAS_PINNED_BATCHES 24
120	#define LOCAL_I915_PARAM_HAS_NO_RELOC 25	120	#define LOCAL_I915_PARAM_HAS_NO_RELOC 25
121	#define LOCAL_I915_PARAM_HAS_HANDLE_LUT 26	121	#define LOCAL_I915_PARAM_HAS_HANDLE_LUT 26
122	#define LOCAL_I915_PARAM_HAS_WT 27	122	#define LOCAL_I915_PARAM_HAS_WT 27
123		123
124	#define LOCAL_I915_EXEC_IS_PINNED (1<<10)	124	#define LOCAL_I915_EXEC_IS_PINNED (1<<10)
125	#define LOCAL_I915_EXEC_NO_RELOC (1<<11)	125	#define LOCAL_I915_EXEC_NO_RELOC (1<<11)
126	#define LOCAL_I915_EXEC_HANDLE_LUT (1<<12)	126	#define LOCAL_I915_EXEC_HANDLE_LUT (1<<12)
127	struct local_i915_gem_userptr {	127	struct local_i915_gem_userptr {
128	uint64_t user_ptr;	128	uint64_t user_ptr;
129	uint64_t user_size;	129	uint64_t user_size;
130	uint32_t flags;	130	uint32_t flags;
131	#define I915_USERPTR_READ_ONLY (1<<0)	131	#define I915_USERPTR_READ_ONLY (1<<0)
132	#define I915_USERPTR_UNSYNCHRONIZED (1<<31)	132	#define I915_USERPTR_UNSYNCHRONIZED (1<<31)
133	uint32_t handle;	133	uint32_t handle;
134	};	134	};
135		135
136	#define UNCACHED 0	136	#define UNCACHED 0
137	#define SNOOPED 1	137	#define SNOOPED 1
138	#define DISPLAY 2	138	#define DISPLAY 2
139		139
140	struct local_i915_gem_caching {	140	struct local_i915_gem_caching {
141	uint32_t handle;	141	uint32_t handle;
142	uint32_t caching;	142	uint32_t caching;
143	};	143	};
144		144
145	#define LOCAL_IOCTL_I915_GEM_SET_CACHING SRV_I915_GEM_SET_CACHING	145	#define LOCAL_IOCTL_I915_GEM_SET_CACHING SRV_I915_GEM_SET_CACHING
146		146
147	struct local_fbinfo {	147	struct local_fbinfo {
148	int width;	148	int width;
149	int height;	149	int height;
150	int pitch;	150	int pitch;
151	int tiling;	151	int tiling;
152	};	152	};
153		153
154	struct kgem_buffer {	154	struct kgem_buffer {
155	struct kgem_bo base;	155	struct kgem_bo base;
156	void *mem;	156	void *mem;
157	uint32_t used;	157	uint32_t used;
158	uint32_t need_io : 1;	158	uint32_t need_io : 1;
159	uint32_t write : 2;	159	uint32_t write : 2;
160	uint32_t mmapped : 1;	160	uint32_t mmapped : 1;
161	};	161	};
162		162
163	static struct kgem_bo *__kgem_freed_bo;	163	static struct kgem_bo *__kgem_freed_bo;
164	static struct kgem_request *__kgem_freed_request;	164	static struct kgem_request *__kgem_freed_request;
165	static struct drm_i915_gem_exec_object2 _kgem_dummy_exec;	165	static struct drm_i915_gem_exec_object2 _kgem_dummy_exec;
166		166
167	static inline int bytes(struct kgem_bo *bo)	167	static inline int bytes(struct kgem_bo *bo)
168	{	168	{
169	return __kgem_bo_size(bo);	169	return __kgem_bo_size(bo);
170	}	170	}
171		171
172	#define bucket(B) (B)->size.pages.bucket	172	#define bucket(B) (B)->size.pages.bucket
173	#define num_pages(B) (B)->size.pages.count	173	#define num_pages(B) (B)->size.pages.count
174		174
175	#ifdef DEBUG_MEMORY	175	#ifdef DEBUG_MEMORY
176	static void debug_alloc(struct kgem *kgem, size_t size)	176	static void debug_alloc(struct kgem *kgem, size_t size)
177	{	177	{
178	kgem->debug_memory.bo_allocs++;	178	kgem->debug_memory.bo_allocs++;
179	kgem->debug_memory.bo_bytes += size;	179	kgem->debug_memory.bo_bytes += size;
180	}	180	}
181	static void debug_alloc__bo(struct kgem kgem, struct kgem_bo bo)	181	static void debug_alloc__bo(struct kgem kgem, struct kgem_bo bo)
182	{	182	{
183	debug_alloc(kgem, bytes(bo));	183	debug_alloc(kgem, bytes(bo));
184	}	184	}
185	#else	185	#else
186	#define debug_alloc(k, b)	186	#define debug_alloc(k, b)
187	#define debug_alloc__bo(k, b)	187	#define debug_alloc__bo(k, b)
188	#endif	188	#endif
189		189
190	#ifndef NDEBUG	190	#ifndef NDEBUG
191	static void assert_tiling(struct kgem kgem, struct kgem_bo bo)	191	static void assert_tiling(struct kgem kgem, struct kgem_bo bo)
192	{	192	{
193	struct drm_i915_gem_get_tiling tiling;	193	struct drm_i915_gem_get_tiling tiling;
194		194
195	assert(bo);	195	assert(bo);
196		196
197	VG_CLEAR(tiling);	197	VG_CLEAR(tiling);
198	tiling.handle = bo->handle;	198	tiling.handle = bo->handle;
199	tiling.tiling_mode = -1;	199	tiling.tiling_mode = -1;
200	(void)drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_GET_TILING, &tiling);	200	(void)drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_GET_TILING, &tiling);
201	assert(tiling.tiling_mode == bo->tiling);	201	assert(tiling.tiling_mode == bo->tiling);
202	}	202	}
203	#else	203	#else
204	#define assert_tiling(kgem, bo)	204	#define assert_tiling(kgem, bo)
205	#endif	205	#endif
206		206
207	static void kgem_sna_reset(struct kgem *kgem)	207	static void kgem_sna_reset(struct kgem *kgem)
208	{	208	{
209	struct sna *sna = container_of(kgem, struct sna, kgem);	209	struct sna *sna = container_of(kgem, struct sna, kgem);
210		210
211	sna->render.reset(sna);	211	sna->render.reset(sna);
212	sna->blt_state.fill_bo = 0;	212	sna->blt_state.fill_bo = 0;
213	}	213	}
214		214
215	static void kgem_sna_flush(struct kgem *kgem)	215	static void kgem_sna_flush(struct kgem *kgem)
216	{	216	{
217	struct sna *sna = container_of(kgem, struct sna, kgem);	217	struct sna *sna = container_of(kgem, struct sna, kgem);
218		218
219	sna->render.flush(sna);	219	sna->render.flush(sna);
220		220
221	// if (sna->render.solid_cache.dirty)	221	// if (sna->render.solid_cache.dirty)
222	// sna_render_flush_solid(sna);	222	// sna_render_flush_solid(sna);
223	}	223	}
224		224
225	static bool gem_set_tiling(int fd, uint32_t handle, int tiling, int stride)	225	static bool gem_set_tiling(int fd, uint32_t handle, int tiling, int stride)
226	{	226	{
227	struct drm_i915_gem_set_tiling set_tiling;	227	struct drm_i915_gem_set_tiling set_tiling;
228	int ret;	228	int ret;
229		229
230	if (DBG_NO_TILING)	230	if (DBG_NO_TILING)
231	return false;	231	return false;
232		232
233	VG_CLEAR(set_tiling);	233	VG_CLEAR(set_tiling);
234	do {	234	do {
235	set_tiling.handle = handle;	235	set_tiling.handle = handle;
236	set_tiling.tiling_mode = tiling;	236	set_tiling.tiling_mode = tiling;
237	set_tiling.stride = stride;	237	set_tiling.stride = stride;
238		238
239	ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);	239	ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_SET_TILING, &set_tiling);
240	} while (ret != 0);	240	} while (ret != 0);
241	return ret == 0;	241	return ret == 0;
242	}	242	}
243		243
244	static bool gem_set_caching(int fd, uint32_t handle, int caching)	244	static bool gem_set_caching(int fd, uint32_t handle, int caching)
245	{	245	{
246	struct local_i915_gem_caching arg;	246	struct local_i915_gem_caching arg;
247		247
248	VG_CLEAR(arg);	248	VG_CLEAR(arg);
249	arg.handle = handle;	249	arg.handle = handle;
250	arg.caching = caching;	250	arg.caching = caching;
251	return drmIoctl(fd, LOCAL_IOCTL_I915_GEM_SET_CACHING, &arg) == 0;	251	return drmIoctl(fd, LOCAL_IOCTL_I915_GEM_SET_CACHING, &arg) == 0;
252	}	252	}
253		253
254		254
255		255
256		256
257		257
258	static bool __kgem_throttle_retire(struct kgem *kgem, unsigned flags)	258	static bool __kgem_throttle_retire(struct kgem *kgem, unsigned flags)
259	{	259	{
260	if (flags & CREATE_NO_RETIRE) {	260	if (flags & CREATE_NO_RETIRE) {
261	DBG(("%s: not retiring per-request\n", __FUNCTION__));	261	DBG(("%s: not retiring per-request\n", __FUNCTION__));
262	return false;	262	return false;
263	}	263	}
264		264
265	if (!kgem->need_retire) {	265	if (!kgem->need_retire) {
266	DBG(("%s: nothing to retire\n", __FUNCTION__));	266	DBG(("%s: nothing to retire\n", __FUNCTION__));
267	return false;	267	return false;
268	}	268	}
269		269
270	if (kgem_retire(kgem))	270	if (kgem_retire(kgem))
271	return true;	271	return true;
272		272
273	if (flags & CREATE_NO_THROTTLE \|\| !kgem->need_throttle) {	273	if (flags & CREATE_NO_THROTTLE \|\| !kgem->need_throttle) {
274	DBG(("%s: not throttling\n", __FUNCTION__));	274	DBG(("%s: not throttling\n", __FUNCTION__));
275	return false;	275	return false;
276	}	276	}
277		277
278	kgem_throttle(kgem);	278	kgem_throttle(kgem);
279	return kgem_retire(kgem);	279	return kgem_retire(kgem);
280	}	280	}
281		281
282	static void __kgem_bo_map__gtt(struct kgem kgem, struct kgem_bo *bo)	282	static void __kgem_bo_map__gtt(struct kgem kgem, struct kgem_bo *bo)
283	{	283	{
284	struct drm_i915_gem_mmap_gtt mmap_arg;	284	struct drm_i915_gem_mmap_gtt mmap_arg;
285	void *ptr;	285	void *ptr;
286		286
287	DBG(("%s(handle=%d, size=%d)\n", __FUNCTION__,	287	DBG(("%s(handle=%d, size=%d)\n", __FUNCTION__,
288	bo->handle, bytes(bo)));	288	bo->handle, bytes(bo)));
289	assert(bo->proxy == NULL);	289	assert(bo->proxy == NULL);
290	assert(!bo->snoop);	290	assert(!bo->snoop);
291	assert(kgem_bo_can_map(kgem, bo));	291	assert(kgem_bo_can_map(kgem, bo));
292		292
293	retry_gtt:	293	retry_gtt:
294	VG_CLEAR(mmap_arg);	294	VG_CLEAR(mmap_arg);
295	mmap_arg.handle = bo->handle;	295	mmap_arg.handle = bo->handle;
296	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg)) {	296	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &mmap_arg)) {
297		297
298	(void)__kgem_throttle_retire(kgem, 0);	298	(void)__kgem_throttle_retire(kgem, 0);
299	if (kgem_expire_cache(kgem))	299	if (kgem_expire_cache(kgem))
300	goto retry_gtt;	300	goto retry_gtt;
301		301
302	if (kgem->need_expire) {	302	if (kgem->need_expire) {
303	kgem_cleanup_cache(kgem);	303	kgem_cleanup_cache(kgem);
304	goto retry_gtt;	304	goto retry_gtt;
305	}	305	}
306		306
307	printf("%s: failed to retrieve GTT offset for handle=%d\n",	307	printf("%s: failed to retrieve GTT offset for handle=%d\n",
308	__FUNCTION__, bo->handle);	308	__FUNCTION__, bo->handle);
309	return NULL;	309	return NULL;
310	}	310	}
311		311
312	retry_mmap:	312	retry_mmap:
313	ptr = (void*)(int)mmap_arg.offset;	313	ptr = (void*)(int)mmap_arg.offset;
314	if (ptr == NULL) {	314	if (ptr == NULL) {
315	ErrorF("%s: failed to mmap handle=%d, %d bytes, into GTT domain\n",	315	ErrorF("%s: failed to mmap handle=%d, %d bytes, into GTT domain\n",
316	__FUNCTION__, bo->handle, bytes(bo));	316	__FUNCTION__, bo->handle, bytes(bo));
317	ptr = NULL;	317	ptr = NULL;
318	}	318	}
319		319
320	return ptr;	320	return ptr;
321	}	321	}
322		322
323	static int __gem_write(int fd, uint32_t handle,	323	static int __gem_write(int fd, uint32_t handle,
324	int offset, int length,	324	int offset, int length,
325	const void *src)	325	const void *src)
326	{	326	{
327	struct drm_i915_gem_pwrite pwrite;	327	struct drm_i915_gem_pwrite pwrite;
328		328
329	DBG(("%s(handle=%d, offset=%d, len=%d)\n", __FUNCTION__,	329	DBG(("%s(handle=%d, offset=%d, len=%d)\n", __FUNCTION__,
330	handle, offset, length));	330	handle, offset, length));
331		331
332	VG_CLEAR(pwrite);	332	VG_CLEAR(pwrite);
333	pwrite.handle = handle;	333	pwrite.handle = handle;
334	pwrite.offset = offset;	334	pwrite.offset = offset;
335	pwrite.size = length;	335	pwrite.size = length;
336	pwrite.data_ptr = (uintptr_t)src;	336	pwrite.data_ptr = (uintptr_t)src;
337	return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);	337	return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
338	}	338	}
339		339
340	static int gem_write(int fd, uint32_t handle,	340	static int gem_write(int fd, uint32_t handle,
341	int offset, int length,	341	int offset, int length,
342	const void *src)	342	const void *src)
343	{	343	{
344	struct drm_i915_gem_pwrite pwrite;	344	struct drm_i915_gem_pwrite pwrite;
345		345
346	DBG(("%s(handle=%d, offset=%d, len=%d)\n", __FUNCTION__,	346	DBG(("%s(handle=%d, offset=%d, len=%d)\n", __FUNCTION__,
347	handle, offset, length));	347	handle, offset, length));
348		348
349	VG_CLEAR(pwrite);	349	VG_CLEAR(pwrite);
350	pwrite.handle = handle;	350	pwrite.handle = handle;
351	/* align the transfer to cachelines; fortuitously this is safe! */	351	/* align the transfer to cachelines; fortuitously this is safe! */
352	if ((offset \| length) & 63) {	352	if ((offset \| length) & 63) {
353	pwrite.offset = offset & ~63;	353	pwrite.offset = offset & ~63;
354	pwrite.size = ALIGN(offset+length, 64) - pwrite.offset;	354	pwrite.size = ALIGN(offset+length, 64) - pwrite.offset;
355	pwrite.data_ptr = (uintptr_t)src + pwrite.offset - offset;	355	pwrite.data_ptr = (uintptr_t)src + pwrite.offset - offset;
356	} else {	356	} else {
357	pwrite.offset = offset;	357	pwrite.offset = offset;
358	pwrite.size = length;	358	pwrite.size = length;
359	pwrite.data_ptr = (uintptr_t)src;	359	pwrite.data_ptr = (uintptr_t)src;
360	}	360	}
361	return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);	361	return drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &pwrite);
362	}	362	}
363		363
364		364
365	bool __kgem_busy(struct kgem *kgem, int handle)	365	bool __kgem_busy(struct kgem *kgem, int handle)
366	{	366	{
367	struct drm_i915_gem_busy busy;	367	struct drm_i915_gem_busy busy;
368		368
369	VG_CLEAR(busy);	369	VG_CLEAR(busy);
370	busy.handle = handle;	370	busy.handle = handle;
371	busy.busy = !kgem->wedged;	371	busy.busy = !kgem->wedged;
372	(void)drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy);	372	(void)drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_BUSY, &busy);
373	DBG(("%s: handle=%d, busy=%d, wedged=%d\n",	373	DBG(("%s: handle=%d, busy=%d, wedged=%d\n",
374	__FUNCTION__, handle, busy.busy, kgem->wedged));	374	__FUNCTION__, handle, busy.busy, kgem->wedged));
375		375
376	return busy.busy;	376	return busy.busy;
377	}	377	}
378		378
379	static void kgem_bo_retire(struct kgem kgem, struct kgem_bo bo)	379	static void kgem_bo_retire(struct kgem kgem, struct kgem_bo bo)
380	{	380	{
381	DBG(("%s: retiring bo handle=%d (needed flush? %d), rq? %d [busy?=%d]\n",	381	DBG(("%s: retiring bo handle=%d (needed flush? %d), rq? %d [busy?=%d]\n",
382	__FUNCTION__, bo->handle, bo->needs_flush, bo->rq != NULL,	382	__FUNCTION__, bo->handle, bo->needs_flush, bo->rq != NULL,
383	__kgem_busy(kgem, bo->handle)));	383	__kgem_busy(kgem, bo->handle)));
384	assert(bo->exec == NULL);	384	assert(bo->exec == NULL);
385	assert(list_is_empty(&bo->vma));	385	assert(list_is_empty(&bo->vma));
386		386
387	if (bo->rq) {	387	if (bo->rq) {
388	if (!__kgem_busy(kgem, bo->handle)) {	388	if (!__kgem_busy(kgem, bo->handle)) {
389	__kgem_bo_clear_busy(bo);	389	__kgem_bo_clear_busy(bo);
390	kgem_retire(kgem);	390	kgem_retire(kgem);
391	}	391	}
392	} else {	392	} else {
393	assert(!bo->needs_flush);	393	assert(!bo->needs_flush);
394	ASSERT_IDLE(kgem, bo->handle);	394	ASSERT_IDLE(kgem, bo->handle);
395	}	395	}
396	}	396	}
397		397
398	bool kgem_bo_write(struct kgem kgem, struct kgem_bo bo,	398	bool kgem_bo_write(struct kgem kgem, struct kgem_bo bo,
399	const void *data, int length)	399	const void *data, int length)
400	{	400	{
401	assert(bo->refcnt);	401	assert(bo->refcnt);
402	assert(!bo->purged);	402	assert(!bo->purged);
403	assert(bo->proxy == NULL);	403	assert(bo->proxy == NULL);
404	ASSERT_IDLE(kgem, bo->handle);	404	ASSERT_IDLE(kgem, bo->handle);
405		405
406	assert(length <= bytes(bo));	406	assert(length <= bytes(bo));
407	if (gem_write(kgem->fd, bo->handle, 0, length, data))	407	if (gem_write(kgem->fd, bo->handle, 0, length, data))
408	return false;	408	return false;
409		409
410	DBG(("%s: flush=%d, domain=%d\n", __FUNCTION__, bo->flush, bo->domain));	410	DBG(("%s: flush=%d, domain=%d\n", __FUNCTION__, bo->flush, bo->domain));
411	if (bo->exec == NULL) {	411	if (bo->exec == NULL) {
412	kgem_bo_retire(kgem, bo);	412	kgem_bo_retire(kgem, bo);
413	bo->domain = DOMAIN_NONE;	413	bo->domain = DOMAIN_NONE;
414	}	414	}
415	bo->gtt_dirty = true;	415	bo->gtt_dirty = true;
416	return true;	416	return true;
417	}	417	}
418		418
419	static uint32_t gem_create(int fd, int num_pages)	419	static uint32_t gem_create(int fd, int num_pages)
420	{	420	{
421	struct drm_i915_gem_create create;	421	struct drm_i915_gem_create create;
422		422
423	VG_CLEAR(create);	423	VG_CLEAR(create);
424	create.handle = 0;	424	create.handle = 0;
425	create.size = PAGE_SIZE * num_pages;	425	create.size = PAGE_SIZE * num_pages;
426	(void)drmIoctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create);	426	(void)drmIoctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create);
427		427
428	return create.handle;	428	return create.handle;
429	}	429	}
430		430
431	static bool	431	static bool
432	kgem_bo_set_purgeable(struct kgem kgem, struct kgem_bo bo)	432	kgem_bo_set_purgeable(struct kgem kgem, struct kgem_bo bo)
433	{	433	{
434	#if DBG_NO_MADV	434	#if DBG_NO_MADV
435	return true;	435	return true;
436	#else	436	#else
437	struct drm_i915_gem_madvise madv;	437	struct drm_i915_gem_madvise madv;
438		438
439	assert(bo->exec == NULL);	439	assert(bo->exec == NULL);
440	assert(!bo->purged);	440	assert(!bo->purged);
441		441
442	VG_CLEAR(madv);	442	VG_CLEAR(madv);
443	madv.handle = bo->handle;	443	madv.handle = bo->handle;
444	madv.madv = I915_MADV_DONTNEED;	444	madv.madv = I915_MADV_DONTNEED;
445	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0) {	445	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0) {
446	bo->purged = 1;	446	bo->purged = 1;
447	kgem->need_purge \|= !madv.retained && bo->domain == DOMAIN_GPU;	447	kgem->need_purge \|= !madv.retained && bo->domain == DOMAIN_GPU;
448	return madv.retained;	448	return madv.retained;
449	}	449	}
450		450
451	return true;	451	return true;
452	#endif	452	#endif
453	}	453	}
454		454
455	static bool	455	static bool
456	kgem_bo_is_retained(struct kgem kgem, struct kgem_bo bo)	456	kgem_bo_is_retained(struct kgem kgem, struct kgem_bo bo)
457	{	457	{
458	#if DBG_NO_MADV	458	#if DBG_NO_MADV
459	return true;	459	return true;
460	#else	460	#else
461	struct drm_i915_gem_madvise madv;	461	struct drm_i915_gem_madvise madv;
462		462
463	if (!bo->purged)	463	if (!bo->purged)
464	return true;	464	return true;
465		465
466	VG_CLEAR(madv);	466	VG_CLEAR(madv);
467	madv.handle = bo->handle;	467	madv.handle = bo->handle;
468	madv.madv = I915_MADV_DONTNEED;	468	madv.madv = I915_MADV_DONTNEED;
469	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0)	469	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0)
470	return madv.retained;	470	return madv.retained;
471		471
472	return false;	472	return false;
473	#endif	473	#endif
474	}	474	}
475		475
476	static bool	476	static bool
477	kgem_bo_clear_purgeable(struct kgem kgem, struct kgem_bo bo)	477	kgem_bo_clear_purgeable(struct kgem kgem, struct kgem_bo bo)
478	{	478	{
479	#if DBG_NO_MADV	479	#if DBG_NO_MADV
480	return true;	480	return true;
481	#else	481	#else
482	struct drm_i915_gem_madvise madv;	482	struct drm_i915_gem_madvise madv;
483		483
484	assert(bo->purged);	484	assert(bo->purged);
485		485
486	VG_CLEAR(madv);	486	VG_CLEAR(madv);
487	madv.handle = bo->handle;	487	madv.handle = bo->handle;
488	madv.madv = I915_MADV_WILLNEED;	488	madv.madv = I915_MADV_WILLNEED;
489	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0) {	489	if (drmIoctl(kgem->fd, DRM_IOCTL_I915_GEM_MADVISE, &madv) == 0) {
490	bo->purged = !madv.retained;	490	bo->purged = !madv.retained;
491	kgem->need_purge \|= !madv.retained && bo->domain == DOMAIN_GPU;	491	kgem->need_purge \|= !madv.retained && bo->domain == DOMAIN_GPU;
492	return madv.retained;	492	return madv.retained;
493	}	493	}
494		494
495	return false;	495	return false;
496	#endif	496	#endif
497	}	497	}
498		498
499	static void gem_close(int fd, uint32_t handle)	499	static void gem_close(int fd, uint32_t handle)
500	{	500	{

Subversion Repositories Kolibri OS

(root)/drivers/video/Intel-2D/kgem.c – Rev 4251 → 4281