WebSVN – Kolibri OS – /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 <chris@chris-wilson.co.uk>
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "sna.h"
#include "sna_reg.h"
#include <time.h>
#include <errno.h>
#include <fcntl.h>
#ifdef HAVE_VALGRIND
#include <valgrind.h>
#include <memcheck.h>
#endif
#ifdef HAVE_STRUCT_SYSINFO_TOTALRAM
#include <sys/sysinfo.h>
#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;
}

Subversion Repositories Kolibri OS

(root)/drivers/video/Intel-2D/kgem.c – Rev 4303