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/*

 * Copyright 2008 Advanced Micro Devices, Inc.

 * Copyright 2008 Red Hat Inc.

 * Copyright 2009 Jerome Glisse.

 *

 * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie

 *          Alex Deucher

 *          Jerome Glisse

 */

//#include 

#include 

#include 

#include 

#include 

#include "radeon_reg.h"

#include "radeon.h"

#include "atom.h"

#include "bitmap.h"

#include "display.h"

#include 

#define PCI_VENDOR_ID_ATI               0x1002

#define PCI_VENDOR_ID_APPLE             0x106b

int radeon_no_wb;

int radeon_modeset = -1;

int radeon_dynclks = -1;

int radeon_r4xx_atom = 0;

int radeon_agpmode = 0;

int radeon_vram_limit = 0;

int radeon_gart_size = -1; /* auto */

int radeon_benchmarking = 0;

int radeon_testing = 0;

int radeon_connector_table = 0;

int radeon_tv = 1;

int radeon_audio = -1;

int radeon_disp_priority = 0;

int radeon_hw_i2c = 0;

int radeon_pcie_gen2 = -1;

int radeon_msi = -1;

int radeon_lockup_timeout = 10000;

int radeon_fastfb = 0;

int radeon_dpm = -1;

int radeon_aspm = -1;

int radeon_runtime_pm = -1;

int radeon_hard_reset = 0;

int radeon_vm_size = 8;

int radeon_vm_block_size = -1;

int radeon_deep_color = 0;

int radeon_use_pflipirq = 2;

int irq_override = 0;

int radeon_bapm = -1;

int radeon_backlight = 0;

extern display_t *os_display;

extern struct drm_device *main_device;

extern videomode_t usermode;

void parse_cmdline(char *cmdline, videomode_t *mode, char *log, int *kms);

int init_display(struct radeon_device *rdev, videomode_t *mode);

int init_display_kms(struct drm_device *dev, videomode_t *usermode);

int get_modes(videomode_t *mode, u32_t *count);

int set_user_mode(videomode_t *mode);

int r100_2D_test(struct radeon_device *rdev);

 /* Legacy VGA regions */

#define VGA_RSRC_NONE          0x00

#define VGA_RSRC_LEGACY_IO     0x01

#define VGA_RSRC_LEGACY_MEM    0x02

#define VGA_RSRC_LEGACY_MASK   (VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM)

/* Non-legacy access */

#define VGA_RSRC_NORMAL_IO     0x04

#define VGA_RSRC_NORMAL_MEM    0x08

static const char radeon_family_name[][16] = {

	"R100",

	"RV100",

	"RS100",

	"RV200",

	"RS200",

	"R200",

	"RV250",

	"RS300",

	"RV280",

	"R300",

	"R350",

	"RV350",

	"RV380",

	"R420",

	"R423",

	"RV410",

	"RS400",

	"RS480",

	"RS600",

	"RS690",

	"RS740",

	"RV515",

	"R520",

	"RV530",

	"RV560",

	"RV570",

	"R580",

	"R600",

	"RV610",

	"RV630",

	"RV670",

	"RV620",

	"RV635",

	"RS780",

	"RS880",

	"RV770",

	"RV730",

	"RV710",

	"RV740",

	"CEDAR",

	"REDWOOD",

	"JUNIPER",

	"CYPRESS",

	"HEMLOCK",

	"PALM",

	"SUMO",

	"SUMO2",

	"BARTS",

	"TURKS",

	"CAICOS",

	"CAYMAN",

	"ARUBA",

	"TAHITI",

	"PITCAIRN",

	"VERDE",

	"OLAND",

	"HAINAN",

	"BONAIRE",

	"KAVERI",

	"KABINI",

	"HAWAII",

	"MULLINS",

	"LAST",

};

#define RADEON_PX_QUIRK_DISABLE_PX  (1 << 0)

#define RADEON_PX_QUIRK_LONG_WAKEUP (1 << 1)

struct radeon_px_quirk {

	u32 chip_vendor;

	u32 chip_device;

	u32 subsys_vendor;

	u32 subsys_device;

	u32 px_quirk_flags;

};

static struct radeon_px_quirk radeon_px_quirk_list[] = {

	/* Acer aspire 5560g (CPU: AMD A4-3305M; GPU: AMD Radeon HD 6480g + 7470m)

	 * https://bugzilla.kernel.org/show_bug.cgi?id=74551

	 */

	{ PCI_VENDOR_ID_ATI, 0x6760, 0x1025, 0x0672, RADEON_PX_QUIRK_DISABLE_PX },

	/* Asus K73TA laptop with AMD A6-3400M APU and Radeon 6550 GPU

	 * https://bugzilla.kernel.org/show_bug.cgi?id=51381

	 */

	{ PCI_VENDOR_ID_ATI, 0x6741, 0x1043, 0x108c, RADEON_PX_QUIRK_DISABLE_PX },

	/* Asus K53TK laptop with AMD A6-3420M APU and Radeon 7670m GPU

	 * https://bugzilla.kernel.org/show_bug.cgi?id=51381

	 */

	{ PCI_VENDOR_ID_ATI, 0x6840, 0x1043, 0x2122, RADEON_PX_QUIRK_DISABLE_PX },

	/* macbook pro 8.2 */

	{ PCI_VENDOR_ID_ATI, 0x6741, PCI_VENDOR_ID_APPLE, 0x00e2, RADEON_PX_QUIRK_LONG_WAKEUP },

	{ 0, 0, 0, 0, 0 },

};

bool radeon_is_px(struct drm_device *dev)

{

	struct radeon_device *rdev = dev->dev_private;

	if (rdev->flags & RADEON_IS_PX)

		return true;

	return false;

}

static void radeon_device_handle_px_quirks(struct radeon_device *rdev)

{

	struct radeon_px_quirk *p = radeon_px_quirk_list;

	/* Apply PX quirks */

	while (p && p->chip_device != 0) {

		if (rdev->pdev->vendor == p->chip_vendor &&

		    rdev->pdev->device == p->chip_device &&

		    rdev->pdev->subsystem_vendor == p->subsys_vendor &&

		    rdev->pdev->subsystem_device == p->subsys_device) {

			rdev->px_quirk_flags = p->px_quirk_flags;

			break;

		}

		++p;

	}

	if (rdev->px_quirk_flags & RADEON_PX_QUIRK_DISABLE_PX)

		rdev->flags &= ~RADEON_IS_PX;

}

/**

 * radeon_program_register_sequence - program an array of registers.

 *

 * @rdev: radeon_device pointer

 * @registers: pointer to the register array

 * @array_size: size of the register array

 *

 * Programs an array or registers with and and or masks.

 * This is a helper for setting golden registers.

 */

void radeon_program_register_sequence(struct radeon_device *rdev,

				      const u32 *registers,

				      const u32 array_size)

{

	u32 tmp, reg, and_mask, or_mask;

	int i;

	if (array_size % 3)

		return;

	for (i = 0; i < array_size; i +=3) {

		reg = registers[i + 0];

		and_mask = registers[i + 1];

		or_mask = registers[i + 2];

		if (and_mask == 0xffffffff) {

			tmp = or_mask;

		} else {

			tmp = RREG32(reg);

			tmp &= ~and_mask;

			tmp |= or_mask;

		}

		WREG32(reg, tmp);

	}

}

void radeon_pci_config_reset(struct radeon_device *rdev)

{

	pci_write_config_dword(rdev->pdev, 0x7c, RADEON_ASIC_RESET_DATA);

}

/**

 * radeon_surface_init - Clear GPU surface registers.

 *

 * @rdev: radeon_device pointer

 *

 * Clear GPU surface registers (r1xx-r5xx).

 */

void radeon_surface_init(struct radeon_device *rdev)

{

    /* FIXME: check this out */

    if (rdev->family < CHIP_R600) {

        int i;

		for (i = 0; i < RADEON_GEM_MAX_SURFACES; i++) {

			if (rdev->surface_regs[i].bo)

				radeon_bo_get_surface_reg(rdev->surface_regs[i].bo);

			else

           radeon_clear_surface_reg(rdev, i);

        }

		/* enable surfaces */

		WREG32(RADEON_SURFACE_CNTL, 0);

    }

}

/*

 * GPU scratch registers helpers function.

 */

/**

 * radeon_scratch_init - Init scratch register driver information.

 *

 * @rdev: radeon_device pointer

 *

 * Init CP scratch register driver information (r1xx-r5xx)

 */

void radeon_scratch_init(struct radeon_device *rdev)

{

    int i;

    /* FIXME: check this out */

    if (rdev->family < CHIP_R300) {

        rdev->scratch.num_reg = 5;

    } else {

        rdev->scratch.num_reg = 7;

    }

	rdev->scratch.reg_base = RADEON_SCRATCH_REG0;

    for (i = 0; i < rdev->scratch.num_reg; i++) {

        rdev->scratch.free[i] = true;

		rdev->scratch.reg[i] = rdev->scratch.reg_base + (i * 4);

    }

}

/**

 * radeon_scratch_get - Allocate a scratch register

 *

 * @rdev: radeon_device pointer

 * @reg: scratch register mmio offset

 *

 * Allocate a CP scratch register for use by the driver (all asics).

 * Returns 0 on success or -EINVAL on failure.

 */

int radeon_scratch_get(struct radeon_device *rdev, uint32_t *reg)

{

	int i;

	for (i = 0; i < rdev->scratch.num_reg; i++) {

		if (rdev->scratch.free[i]) {

			rdev->scratch.free[i] = false;

			*reg = rdev->scratch.reg[i];

			return 0;

		}

	}

	return -EINVAL;

}

/**

 * radeon_scratch_free - Free a scratch register

 *

 * @rdev: radeon_device pointer

 * @reg: scratch register mmio offset

 *

 * Free a CP scratch register allocated for use by the driver (all asics)

 */

void radeon_scratch_free(struct radeon_device *rdev, uint32_t reg)

{

	int i;

	for (i = 0; i < rdev->scratch.num_reg; i++) {

		if (rdev->scratch.reg[i] == reg) {

			rdev->scratch.free[i] = true;

			return;

		}

	}

}

/*

 * GPU doorbell aperture helpers function.

 */

/**

 * radeon_doorbell_init - Init doorbell driver information.

 *

 * @rdev: radeon_device pointer

 *

 * Init doorbell driver information (CIK)

 * Returns 0 on success, error on failure.

 */

static int radeon_doorbell_init(struct radeon_device *rdev)

{

	/* doorbell bar mapping */

	rdev->doorbell.base = pci_resource_start(rdev->pdev, 2);

	rdev->doorbell.size = pci_resource_len(rdev->pdev, 2);

	rdev->doorbell.num_doorbells = min_t(u32, rdev->doorbell.size / sizeof(u32), RADEON_MAX_DOORBELLS);

	if (rdev->doorbell.num_doorbells == 0)

		return -EINVAL;

	rdev->doorbell.ptr = ioremap(rdev->doorbell.base, rdev->doorbell.num_doorbells * sizeof(u32));

	if (rdev->doorbell.ptr == NULL) {

		return -ENOMEM;

	}

	DRM_INFO("doorbell mmio base: 0x%08X\n", (uint32_t)rdev->doorbell.base);

	DRM_INFO("doorbell mmio size: %u\n", (unsigned)rdev->doorbell.size);

	memset(&rdev->doorbell.used, 0, sizeof(rdev->doorbell.used));

	return 0;

}

/**

 * radeon_doorbell_fini - Tear down doorbell driver information.

 *

 * @rdev: radeon_device pointer

 *

 * Tear down doorbell driver information (CIK)

 */

static void radeon_doorbell_fini(struct radeon_device *rdev)

{

	iounmap(rdev->doorbell.ptr);

	rdev->doorbell.ptr = NULL;

}

/**

 * radeon_doorbell_get - Allocate a doorbell entry

 *

 * @rdev: radeon_device pointer

 * @doorbell: doorbell index

 *

 * Allocate a doorbell for use by the driver (all asics).

 * Returns 0 on success or -EINVAL on failure.

 */

int radeon_doorbell_get(struct radeon_device *rdev, u32 *doorbell)

{

	unsigned long offset = find_first_zero_bit(rdev->doorbell.used, rdev->doorbell.num_doorbells);

	if (offset < rdev->doorbell.num_doorbells) {

		__set_bit(offset, rdev->doorbell.used);

		*doorbell = offset;

		return 0;

	} else {

		return -EINVAL;

	}

}

/**

 * radeon_doorbell_free - Free a doorbell entry

 *

 * @rdev: radeon_device pointer

 * @doorbell: doorbell index

 *

 * Free a doorbell allocated for use by the driver (all asics)

 */

void radeon_doorbell_free(struct radeon_device *rdev, u32 doorbell)

{

	if (doorbell < rdev->doorbell.num_doorbells)

		__clear_bit(doorbell, rdev->doorbell.used);

}

/*

 * radeon_wb_*()

 * Writeback is the the method by which the the GPU updates special pages

 * in memory with the status of certain GPU events (fences, ring pointers,

 * etc.).

 */

/**

 * radeon_wb_disable - Disable Writeback

 *

 * @rdev: radeon_device pointer

 *

 * Disables Writeback (all asics).  Used for suspend.

 */

void radeon_wb_disable(struct radeon_device *rdev)

{

	rdev->wb.enabled = false;

}

/**

 * radeon_wb_fini - Disable Writeback and free memory

 *

 * @rdev: radeon_device pointer

 *

 * Disables Writeback and frees the Writeback memory (all asics).

 * Used at driver shutdown.

 */

void radeon_wb_fini(struct radeon_device *rdev)

{

	radeon_wb_disable(rdev);

	if (rdev->wb.wb_obj) {

		if (!radeon_bo_reserve(rdev->wb.wb_obj, false)) {

			radeon_bo_kunmap(rdev->wb.wb_obj);

			radeon_bo_unpin(rdev->wb.wb_obj);

			radeon_bo_unreserve(rdev->wb.wb_obj);

		}

		radeon_bo_unref(&rdev->wb.wb_obj);

		rdev->wb.wb = NULL;

		rdev->wb.wb_obj = NULL;

	}

}

/**

 * radeon_wb_init- Init Writeback driver info and allocate memory

 *

 * @rdev: radeon_device pointer

 *

 * Disables Writeback and frees the Writeback memory (all asics).

 * Used at driver startup.

 * Returns 0 on success or an -error on failure.

 */

int radeon_wb_init(struct radeon_device *rdev)

{

	int r;

	if (rdev->wb.wb_obj == NULL) {

		r = radeon_bo_create(rdev, RADEON_GPU_PAGE_SIZE, PAGE_SIZE, true,

				     RADEON_GEM_DOMAIN_GTT, 0, NULL,

				     &rdev->wb.wb_obj);

		if (r) {

			dev_warn(rdev->dev, "(%d) create WB bo failed\n", r);

			return r;

		}

	r = radeon_bo_reserve(rdev->wb.wb_obj, false);

	if (unlikely(r != 0)) {

		radeon_wb_fini(rdev);

		return r;

	}

	r = radeon_bo_pin(rdev->wb.wb_obj, RADEON_GEM_DOMAIN_GTT,

			  &rdev->wb.gpu_addr);

	if (r) {

		radeon_bo_unreserve(rdev->wb.wb_obj);

		dev_warn(rdev->dev, "(%d) pin WB bo failed\n", r);

		radeon_wb_fini(rdev);

		return r;

	}

	r = radeon_bo_kmap(rdev->wb.wb_obj, (void **)&rdev->wb.wb);

	radeon_bo_unreserve(rdev->wb.wb_obj);

	if (r) {

		dev_warn(rdev->dev, "(%d) map WB bo failed\n", r);

		radeon_wb_fini(rdev);

		return r;

	}

	}

	/* clear wb memory */

	memset((char *)rdev->wb.wb, 0, RADEON_GPU_PAGE_SIZE);

	/* disable event_write fences */

	rdev->wb.use_event = false;

	/* disabled via module param */

	if (radeon_no_wb == 1) {

		rdev->wb.enabled = false;

	} else {

		if (rdev->flags & RADEON_IS_AGP) {

		/* often unreliable on AGP */

			rdev->wb.enabled = false;

		} else if (rdev->family < CHIP_R300) {

			/* often unreliable on pre-r300 */

			rdev->wb.enabled = false;

		} else {

			rdev->wb.enabled = true;

			/* event_write fences are only available on r600+ */

			if (rdev->family >= CHIP_R600) {

				rdev->wb.use_event = true;

	}

		}

	}

	/* always use writeback/events on NI, APUs */

	if (rdev->family >= CHIP_PALM) {

		rdev->wb.enabled = true;

		rdev->wb.use_event = true;

	}

	dev_info(rdev->dev, "WB %sabled\n", rdev->wb.enabled ? "en" : "dis");

	return 0;

}

/**

 * radeon_vram_location - try to find VRAM location

 * @rdev: radeon device structure holding all necessary informations

 * @mc: memory controller structure holding memory informations

 * @base: base address at which to put VRAM

 *

 * Function will place try to place VRAM at base address provided

 * as parameter (which is so far either PCI aperture address or

 * for IGP TOM base address).

 *

 * If there is not enough space to fit the unvisible VRAM in the 32bits

 * address space then we limit the VRAM size to the aperture.

 *

 * If we are using AGP and if the AGP aperture doesn't allow us to have

 * room for all the VRAM than we restrict the VRAM to the PCI aperture

 * size and print a warning.

 *

 * This function will never fails, worst case are limiting VRAM.

 *

 * Note: GTT start, end, size should be initialized before calling this

 * function on AGP platform.

 *

 * Note: We don't explicitly enforce VRAM start to be aligned on VRAM size,

 * this shouldn't be a problem as we are using the PCI aperture as a reference.

 * Otherwise this would be needed for rv280, all r3xx, and all r4xx, but

 * not IGP.

 *

 * Note: we use mc_vram_size as on some board we need to program the mc to

 * cover the whole aperture even if VRAM size is inferior to aperture size

 * Novell bug 204882 + along with lots of ubuntu ones

 *

 * Note: when limiting vram it's safe to overwritte real_vram_size because

 * we are not in case where real_vram_size is inferior to mc_vram_size (ie

 * note afected by bogus hw of Novell bug 204882 + along with lots of ubuntu

 * ones)

 *

 * Note: IGP TOM addr should be the same as the aperture addr, we don't

 * explicitly check for that thought.

 *

 * FIXME: when reducing VRAM size align new size on power of 2.

 */

void radeon_vram_location(struct radeon_device *rdev, struct radeon_mc *mc, u64 base)

{

	uint64_t limit = (uint64_t)radeon_vram_limit << 20;

	mc->vram_start = base;

	if (mc->mc_vram_size > (rdev->mc.mc_mask - base + 1)) {

		dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");

		mc->real_vram_size = mc->aper_size;

		mc->mc_vram_size = mc->aper_size;

	}

	mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;

	if (rdev->flags & RADEON_IS_AGP && mc->vram_end > mc->gtt_start && mc->vram_start <= mc->gtt_end) {

		dev_warn(rdev->dev, "limiting VRAM to PCI aperture size\n");

		mc->real_vram_size = mc->aper_size;

		mc->mc_vram_size = mc->aper_size;

		}

	mc->vram_end = mc->vram_start + mc->mc_vram_size - 1;

	if (limit && limit < mc->real_vram_size)

		mc->real_vram_size = limit;

	dev_info(rdev->dev, "VRAM: %lluM 0x%016llX - 0x%016llX (%lluM used)\n",

			mc->mc_vram_size >> 20, mc->vram_start,

			mc->vram_end, mc->real_vram_size >> 20);

}

/**

 * radeon_gtt_location - try to find GTT location

 * @rdev: radeon device structure holding all necessary informations

 * @mc: memory controller structure holding memory informations

 *

 * Function will place try to place GTT before or after VRAM.

 *

 * If GTT size is bigger than space left then we ajust GTT size.

 * Thus function will never fails.

 *

 * FIXME: when reducing GTT size align new size on power of 2.

 */

void radeon_gtt_location(struct radeon_device *rdev, struct radeon_mc *mc)

{

	u64 size_af, size_bf;

	size_af = ((rdev->mc.mc_mask - mc->vram_end) + mc->gtt_base_align) & ~mc->gtt_base_align;

	size_bf = mc->vram_start & ~mc->gtt_base_align;

	if (size_bf > size_af) {

		if (mc->gtt_size > size_bf) {

			dev_warn(rdev->dev, "limiting GTT\n");

			mc->gtt_size = size_bf;

		}

		mc->gtt_start = (mc->vram_start & ~mc->gtt_base_align) - mc->gtt_size;

	} else {

		if (mc->gtt_size > size_af) {

			dev_warn(rdev->dev, "limiting GTT\n");

			mc->gtt_size = size_af;

		}

		mc->gtt_start = (mc->vram_end + 1 + mc->gtt_base_align) & ~mc->gtt_base_align;

	}

	mc->gtt_end = mc->gtt_start + mc->gtt_size - 1;

	dev_info(rdev->dev, "GTT: %lluM 0x%016llX - 0x%016llX\n",

			mc->gtt_size >> 20, mc->gtt_start, mc->gtt_end);

}

/*

 * GPU helpers function.

 */

/**

 * radeon_card_posted - check if the hw has already been initialized

 *

 * @rdev: radeon_device pointer

 *

 * Check if the asic has been initialized (all asics).

 * Used at driver startup.

 * Returns true if initialized or false if not.

 */

bool radeon_card_posted(struct radeon_device *rdev)

{

	uint32_t reg;

	if (ASIC_IS_NODCE(rdev))

		goto check_memsize;

	/* first check CRTCs */

	if (ASIC_IS_DCE4(rdev)) {

		reg = RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC0_REGISTER_OFFSET) |

			RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC1_REGISTER_OFFSET);

			if (rdev->num_crtc >= 4) {

				reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |

					RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET);

			}

			if (rdev->num_crtc >= 6) {

				reg |= RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC4_REGISTER_OFFSET) |

			RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC5_REGISTER_OFFSET);

			}

		if (reg & EVERGREEN_CRTC_MASTER_EN)

			return true;

	} else if (ASIC_IS_AVIVO(rdev)) {

		reg = RREG32(AVIVO_D1CRTC_CONTROL) |

		      RREG32(AVIVO_D2CRTC_CONTROL);

		if (reg & AVIVO_CRTC_EN) {

			return true;

		}

	} else {

		reg = RREG32(RADEON_CRTC_GEN_CNTL) |

		      RREG32(RADEON_CRTC2_GEN_CNTL);

		if (reg & RADEON_CRTC_EN) {

			return true;

		}

	}

check_memsize:

	/* then check MEM_SIZE, in case the crtcs are off */

	if (rdev->family >= CHIP_R600)

		reg = RREG32(R600_CONFIG_MEMSIZE);

	else

		reg = RREG32(RADEON_CONFIG_MEMSIZE);

	if (reg)

		return true;

	return false;

}

/**

 * radeon_update_bandwidth_info - update display bandwidth params

 *

 * @rdev: radeon_device pointer

 *

 * Used when sclk/mclk are switched or display modes are set.

 * params are used to calculate display watermarks (all asics)

 */

void radeon_update_bandwidth_info(struct radeon_device *rdev)

{

	fixed20_12 a;

	u32 sclk = rdev->pm.current_sclk;

	u32 mclk = rdev->pm.current_mclk;

	/* sclk/mclk in Mhz */

		a.full = dfixed_const(100);

		rdev->pm.sclk.full = dfixed_const(sclk);

		rdev->pm.sclk.full = dfixed_div(rdev->pm.sclk, a);

		rdev->pm.mclk.full = dfixed_const(mclk);

		rdev->pm.mclk.full = dfixed_div(rdev->pm.mclk, a);

	if (rdev->flags & RADEON_IS_IGP) {

		a.full = dfixed_const(16);

		/* core_bandwidth = sclk(Mhz) * 16 */

		rdev->pm.core_bandwidth.full = dfixed_div(rdev->pm.sclk, a);

	}

}

/**

 * radeon_boot_test_post_card - check and possibly initialize the hw

 *

 * @rdev: radeon_device pointer

 *

 * Check if the asic is initialized and if not, attempt to initialize

 * it (all asics).

 * Returns true if initialized or false if not.

 */

bool radeon_boot_test_post_card(struct radeon_device *rdev)

{

	if (radeon_card_posted(rdev))

		return true;

	if (rdev->bios) {

		DRM_INFO("GPU not posted. posting now...\n");

		if (rdev->is_atom_bios)

			atom_asic_init(rdev->mode_info.atom_context);

		else

			radeon_combios_asic_init(rdev->ddev);

		return true;

	} else {

		dev_err(rdev->dev, "Card not posted and no BIOS - ignoring\n");

		return false;

	}

}

/**

 * radeon_dummy_page_init - init dummy page used by the driver

 *

 * @rdev: radeon_device pointer

 *

 * Allocate the dummy page used by the driver (all asics).

 * This dummy page is used by the driver as a filler for gart entries

 * when pages are taken out of the GART

 * Returns 0 on sucess, -ENOMEM on failure.

 */

int radeon_dummy_page_init(struct radeon_device *rdev)

{

	if (rdev->dummy_page.page)

		return 0;

	rdev->dummy_page.page = alloc_page(GFP_DMA32 | GFP_KERNEL | __GFP_ZERO);

	if (rdev->dummy_page.page == NULL)

		return -ENOMEM;

	rdev->dummy_page.addr = pci_map_page(rdev->pdev, rdev->dummy_page.page,

					0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);

	return 0;

}

/**

 * radeon_dummy_page_fini - free dummy page used by the driver

 *

 * @rdev: radeon_device pointer

 *

 * Frees the dummy page used by the driver (all asics).

 */

void radeon_dummy_page_fini(struct radeon_device *rdev)

{

	if (rdev->dummy_page.page == NULL)

		return;

	rdev->dummy_page.page = NULL;

}

/* ATOM accessor methods */

/*

 * ATOM is an interpreted byte code stored in tables in the vbios.  The

 * driver registers callbacks to access registers and the interpreter

 * in the driver parses the tables and executes then to program specific

 * actions (set display modes, asic init, etc.).  See radeon_atombios.c,

 * atombios.h, and atom.c

 */

/**

 * cail_pll_read - read PLL register

 *

 * @info: atom card_info pointer

 * @reg: PLL register offset

 *

 * Provides a PLL register accessor for the atom interpreter (r4xx+).

 * Returns the value of the PLL register.

 */

static uint32_t cail_pll_read(struct card_info *info, uint32_t reg)

{

    struct radeon_device *rdev = info->dev->dev_private;

    uint32_t r;

    r = rdev->pll_rreg(rdev, reg);

    return r;

}

/**

 * cail_pll_write - write PLL register

 *

 * @info: atom card_info pointer

 * @reg: PLL register offset

 * @val: value to write to the pll register

 *

 * Provides a PLL register accessor for the atom interpreter (r4xx+).

 */

static void cail_pll_write(struct card_info *info, uint32_t reg, uint32_t val)

{

    struct radeon_device *rdev = info->dev->dev_private;

    rdev->pll_wreg(rdev, reg, val);

}

/**

 * cail_mc_read - read MC (Memory Controller) register

 *

 * @info: atom card_info pointer

 * @reg: MC register offset

 *

 * Provides an MC register accessor for the atom interpreter (r4xx+).

 * Returns the value of the MC register.

 */

static uint32_t cail_mc_read(struct card_info *info, uint32_t reg)

{

    struct radeon_device *rdev = info->dev->dev_private;

    uint32_t r;

    r = rdev->mc_rreg(rdev, reg);

    return r;

}

/**

 * cail_mc_write - write MC (Memory Controller) register

 *

 * @info: atom card_info pointer

 * @reg: MC register offset

 * @val: value to write to the pll register

 *

 * Provides a MC register accessor for the atom interpreter (r4xx+).

 */

static void cail_mc_write(struct card_info *info, uint32_t reg, uint32_t val)

{

    struct radeon_device *rdev = info->dev->dev_private;

    rdev->mc_wreg(rdev, reg, val);

}

/**

 * cail_reg_write - write MMIO register

 *

 * @info: atom card_info pointer

 * @reg: MMIO register offset

 * @val: value to write to the pll register

 *

 * Provides a MMIO register accessor for the atom interpreter (r4xx+).

 */

static void cail_reg_write(struct card_info *info, uint32_t reg, uint32_t val)

{

    struct radeon_device *rdev = info->dev->dev_private;

    WREG32(reg*4, val);

}

/**

 * cail_reg_read - read MMIO register

 *

 * @info: atom card_info pointer

 * @reg: MMIO register offset

 *

 * Provides an MMIO register accessor for the atom interpreter (r4xx+).

 * Returns the value of the MMIO register.

 */

static uint32_t cail_reg_read(struct card_info *info, uint32_t reg)

{

    struct radeon_device *rdev = info->dev->dev_private;

    uint32_t r;

    r = RREG32(reg*4);

    return r;

}

/**

 * cail_ioreg_write - write IO register

 *

 * @info: atom card_info pointer

 * @reg: IO register offset

 * @val: value to write to the pll register

 *

 * Provides a IO register accessor for the atom interpreter (r4xx+).

 */

static void cail_ioreg_write(struct card_info *info, uint32_t reg, uint32_t val)

{

	struct radeon_device *rdev = info->dev->dev_private;

	WREG32_IO(reg*4, val);

}

/**

 * cail_ioreg_read - read IO register

 *

 * @info: atom card_info pointer

 * @reg: IO register offset

 *

 * Provides an IO register accessor for the atom interpreter (r4xx+).

 * Returns the value of the IO register.

 */

static uint32_t cail_ioreg_read(struct card_info *info, uint32_t reg)

{

	struct radeon_device *rdev = info->dev->dev_private;

	uint32_t r;

	r = RREG32_IO(reg*4);

	return r;

}

/**

 * radeon_atombios_init - init the driver info and callbacks for atombios

 *

 * @rdev: radeon_device pointer

 *

 * Initializes the driver info and register access callbacks for the

 * ATOM interpreter (r4xx+).

 * Returns 0 on sucess, -ENOMEM on failure.

 * Called at driver startup.

 */

int radeon_atombios_init(struct radeon_device *rdev)

{

	struct card_info *atom_card_info =

	    kzalloc(sizeof(struct card_info), GFP_KERNEL);

	if (!atom_card_info)

		return -ENOMEM;

	rdev->mode_info.atom_card_info = atom_card_info;

	atom_card_info->dev = rdev->ddev;

	atom_card_info->reg_read = cail_reg_read;

	atom_card_info->reg_write = cail_reg_write;

	/* needed for iio ops */

	if (rdev->rio_mem) {

		atom_card_info->ioreg_read = cail_ioreg_read;

		atom_card_info->ioreg_write = cail_ioreg_write;

	} else {

		DRM_ERROR("Unable to find PCI I/O BAR; using MMIO for ATOM IIO\n");

		atom_card_info->ioreg_read = cail_reg_read;

		atom_card_info->ioreg_write = cail_reg_write;

	}

	atom_card_info->mc_read = cail_mc_read;

	atom_card_info->mc_write = cail_mc_write;

	atom_card_info->pll_read = cail_pll_read;

	atom_card_info->pll_write = cail_pll_write;

	rdev->mode_info.atom_context = atom_parse(atom_card_info, rdev->bios);

	if (!rdev->mode_info.atom_context) {

		radeon_atombios_fini(rdev);

		return -ENOMEM;

	}

	mutex_init(&rdev->mode_info.atom_context->mutex);

    radeon_atom_initialize_bios_scratch_regs(rdev->ddev);

	atom_allocate_fb_scratch(rdev->mode_info.atom_context);

    return 0;

}

/**

 * radeon_atombios_fini - free the driver info and callbacks for atombios

 *

 * @rdev: radeon_device pointer

 *

 * Frees the driver info and register access callbacks for the ATOM

 * interpreter (r4xx+).

 * Called at driver shutdown.

 */

void radeon_atombios_fini(struct radeon_device *rdev)

{

	if (rdev->mode_info.atom_context) {

		kfree(rdev->mode_info.atom_context->scratch);

	}

	kfree(rdev->mode_info.atom_context);

	rdev->mode_info.atom_context = NULL;

	kfree(rdev->mode_info.atom_card_info);

	rdev->mode_info.atom_card_info = NULL;

}

/* COMBIOS */

/*

 * COMBIOS is the bios format prior to ATOM. It provides

 * command tables similar to ATOM, but doesn't have a unified

 * parser.  See radeon_combios.c

 */

/**

 * radeon_combios_init - init the driver info for combios

 *

 * @rdev: radeon_device pointer

 *

 * Initializes the driver info for combios (r1xx-r3xx).

 * Returns 0 on sucess.

 * Called at driver startup.

 */

int radeon_combios_init(struct radeon_device *rdev)

{

	radeon_combios_initialize_bios_scratch_regs(rdev->ddev);

	return 0;

}

/**

 * radeon_combios_fini - free the driver info for combios

 *

 * @rdev: radeon_device pointer

 *

 * Frees the driver info for combios (r1xx-r3xx).

 * Called at driver shutdown.

 */

void radeon_combios_fini(struct radeon_device *rdev)

{

}

/* if we get transitioned to only one device, take VGA back */

/**

 * radeon_vga_set_decode - enable/disable vga decode

 *

 * @cookie: radeon_device pointer

 * @state: enable/disable vga decode

 *

 * Enable/disable vga decode (all asics).

 * Returns VGA resource flags.

 */

static unsigned int radeon_vga_set_decode(void *cookie, bool state)

{

	struct radeon_device *rdev = cookie;

	radeon_vga_set_state(rdev, state);

	if (state)

		return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |

		       VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;

	else

		return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;

}

/**

 * radeon_check_pot_argument - check that argument is a power of two

 *

 * @arg: value to check

 *

 * Validates that a certain argument is a power of two (all asics).

 * Returns true if argument is valid.

 */

static bool radeon_check_pot_argument(int arg)

{

	return (arg & (arg - 1)) == 0;

}

/**

 * radeon_check_arguments - validate module params

 *

 * @rdev: radeon_device pointer

 *