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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 "radeon_reg.h"

#include "radeon.h"

#include "radeon_asic.h"

#include "atom.h"

#include "display.h"

#include 

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 = 512; /* default gart size */

int radeon_benchmarking = 0;

int radeon_testing = 0;

int radeon_connector_table = 0;

int radeon_tv = 1;

int radeon_new_pll = -1;

int radeon_dynpm = -1;

int radeon_audio = 1;

extern display_t *rdisplay;

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 radeon_device *rdev, videomode_t *mode);

int get_modes(videomode_t *mode, int *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

/*

 * Clear GPU surface registers.

 */

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++) {

           radeon_clear_surface_reg(rdev, i);

        }

		/* enable surfaces */

		WREG32(RADEON_SURFACE_CNTL, 0);

    }

}

/*

 * GPU scratch registers helpers function.

 */

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;

    }

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

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

        rdev->scratch.reg[i] = RADEON_SCRATCH_REG0 + (i * 4);

    }

}

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;

}

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;

		}

	}

}

/**

 * 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 explictly 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)

{

	mc->vram_start = base;

	if (mc->mc_vram_size > (0xFFFFFFFF - 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_end <= 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;

	dev_info(rdev->dev, "VRAM: %lluM 0x%08llX - 0x%08llX (%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 = 0xFFFFFFFF - mc->vram_end;

	size_bf = mc->vram_start;

	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_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_end = mc->gtt_start + mc->gtt_size - 1;

	dev_info(rdev->dev, "GTT: %lluM 0x%08llX - 0x%08llX\n",

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

}

/*

 * GPU helpers function.

 */

bool radeon_card_posted(struct radeon_device *rdev)

{

	uint32_t reg;

	/* 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) |

			RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC2_REGISTER_OFFSET) |

			RREG32(EVERGREEN_CRTC_CONTROL + EVERGREEN_CRTC3_REGISTER_OFFSET) |

			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;

		}

	}

	/* 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;

}

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;

	}

}

int radeon_dummy_page_init(struct radeon_device *rdev)

{

	if (rdev->dummy_page.page)

		return 0;

    rdev->dummy_page.page = AllocPage();

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

		return -ENOMEM;

    rdev->dummy_page.addr = MapIoMem(rdev->dummy_page.page, 4096, 5);

	if (!rdev->dummy_page.addr) {

//       __free_page(rdev->dummy_page.page);

		rdev->dummy_page.page = NULL;

		return -ENOMEM;

	}

	return 0;

}

void radeon_dummy_page_fini(struct radeon_device *rdev)

{

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

		return;

    KernelFree(rdev->dummy_page.addr);

	rdev->dummy_page.page = NULL;

}

/*

 * Registers accessors functions.

 */

uint32_t radeon_invalid_rreg(struct radeon_device *rdev, uint32_t reg)

{

    DRM_ERROR("Invalid callback to read register 0x%04X\n", reg);

    BUG_ON(1);

    return 0;

}

void radeon_invalid_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)

{

    DRM_ERROR("Invalid callback to write register 0x%04X with 0x%08X\n",

          reg, v);

    BUG_ON(1);

}

void radeon_register_accessor_init(struct radeon_device *rdev)

{

    rdev->mc_rreg = &radeon_invalid_rreg;

    rdev->mc_wreg = &radeon_invalid_wreg;

    rdev->pll_rreg = &radeon_invalid_rreg;

    rdev->pll_wreg = &radeon_invalid_wreg;

    rdev->pciep_rreg = &radeon_invalid_rreg;

    rdev->pciep_wreg = &radeon_invalid_wreg;

    /* Don't change order as we are overridding accessor. */

    if (rdev->family < CHIP_RV515) {

		rdev->pcie_reg_mask = 0xff;

	} else {

		rdev->pcie_reg_mask = 0x7ff;

    }

    /* FIXME: not sure here */

    if (rdev->family <= CHIP_R580) {

        rdev->pll_rreg = &r100_pll_rreg;

        rdev->pll_wreg = &r100_pll_wreg;

    }

	if (rdev->family >= CHIP_R420) {

		rdev->mc_rreg = &r420_mc_rreg;

		rdev->mc_wreg = &r420_mc_wreg;

	}

    if (rdev->family >= CHIP_RV515) {

        rdev->mc_rreg = &rv515_mc_rreg;

        rdev->mc_wreg = &rv515_mc_wreg;

    }

    if (rdev->family == CHIP_RS400 || rdev->family == CHIP_RS480) {

        rdev->mc_rreg = &rs400_mc_rreg;

        rdev->mc_wreg = &rs400_mc_wreg;

    }

    if (rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {

        rdev->mc_rreg = &rs690_mc_rreg;

        rdev->mc_wreg = &rs690_mc_wreg;

    }

    if (rdev->family == CHIP_RS600) {

        rdev->mc_rreg = &rs600_mc_rreg;

        rdev->mc_wreg = &rs600_mc_wreg;

    }

	if ((rdev->family >= CHIP_R600) && (rdev->family <= CHIP_RV740)) {

		rdev->pciep_rreg = &r600_pciep_rreg;

		rdev->pciep_wreg = &r600_pciep_wreg;

	}

}

/*

 * ASIC

 */

int radeon_asic_init(struct radeon_device *rdev)

{

    radeon_register_accessor_init(rdev);

	switch (rdev->family) {

	case CHIP_R100:

	case CHIP_RV100:

	case CHIP_RS100:

	case CHIP_RV200:

	case CHIP_RS200:

		rdev->asic = &r100_asic;

		break;

	case CHIP_R200:

	case CHIP_RV250:

	case CHIP_RS300:

	case CHIP_RV280:

		rdev->asic = &r200_asic;

		break;

	case CHIP_R300:

	case CHIP_R350:

	case CHIP_RV350:

	case CHIP_RV380:

		if (rdev->flags & RADEON_IS_PCIE)

			rdev->asic = &r300_asic_pcie;

		else

        rdev->asic = &r300_asic;

		break;

	case CHIP_R420:

	case CHIP_R423:

	case CHIP_RV410:

        rdev->asic = &r420_asic;

		break;

	case CHIP_RS400:

	case CHIP_RS480:

       rdev->asic = &rs400_asic;

		break;

	case CHIP_RS600:

        rdev->asic = &rs600_asic;

		break;

	case CHIP_RS690:

	case CHIP_RS740:

        rdev->asic = &rs690_asic;

		break;

	case CHIP_RV515:

        rdev->asic = &rv515_asic;

		break;

	case CHIP_R520:

	case CHIP_RV530:

	case CHIP_RV560:

	case CHIP_RV570:

	case CHIP_R580:

        rdev->asic = &r520_asic;

		break;

	case CHIP_R600:

	case CHIP_RV610:

	case CHIP_RV630:

	case CHIP_RV620:

	case CHIP_RV635:

	case CHIP_RV670:

	case CHIP_RS780:

	case CHIP_RS880:

		rdev->asic = &r600_asic;

		break;

	case CHIP_RV770:

	case CHIP_RV730:

	case CHIP_RV710:

	case CHIP_RV740:

		rdev->asic = &rv770_asic;

		break;

	case CHIP_CEDAR:

	case CHIP_REDWOOD:

	case CHIP_JUNIPER:

	case CHIP_CYPRESS:

	case CHIP_HEMLOCK:

		rdev->asic = &evergreen_asic;

		break;

	default:

		/* FIXME: not supported yet */

		return -EINVAL;

	}

	if (rdev->flags & RADEON_IS_IGP) {

		rdev->asic->get_memory_clock = NULL;

		rdev->asic->set_memory_clock = NULL;

	}

	return 0;

}

/*

 * Wrapper around modesetting bits.

 */

int radeon_clocks_init(struct radeon_device *rdev)

{

	int r;

    r = radeon_static_clocks_init(rdev->ddev);

	if (r) {

		return r;

	}

	DRM_INFO("Clocks initialized !\n");

	return 0;

}

void radeon_clocks_fini(struct radeon_device *rdev)

{

}

/* ATOM accessor methods */

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;

}

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);

}

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;

}

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);

}

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);

}

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;

}

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;

	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);

    radeon_atom_initialize_bios_scratch_regs(rdev->ddev);

	atom_allocate_fb_scratch(rdev->mode_info.atom_context);

    return 0;

}

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);

	}

	kfree(rdev->mode_info.atom_card_info);

}

int radeon_combios_init(struct radeon_device *rdev)

{

	radeon_combios_initialize_bios_scratch_regs(rdev->ddev);

	return 0;

}

void radeon_combios_fini(struct radeon_device *rdev)

{

}

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

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;

}

void radeon_agp_disable(struct radeon_device *rdev)

{

	rdev->flags &= ~RADEON_IS_AGP;

	if (rdev->family >= CHIP_R600) {

		DRM_INFO("Forcing AGP to PCIE mode\n");

		rdev->flags |= RADEON_IS_PCIE;

	} else if (rdev->family >= CHIP_RV515 ||

			rdev->family == CHIP_RV380 ||

			rdev->family == CHIP_RV410 ||

			rdev->family == CHIP_R423) {

		DRM_INFO("Forcing AGP to PCIE mode\n");

		rdev->flags |= RADEON_IS_PCIE;

		rdev->asic->gart_tlb_flush = &rv370_pcie_gart_tlb_flush;

		rdev->asic->gart_set_page = &rv370_pcie_gart_set_page;

	} else {

		DRM_INFO("Forcing AGP to PCI mode\n");

		rdev->flags |= RADEON_IS_PCI;

		rdev->asic->gart_tlb_flush = &r100_pci_gart_tlb_flush;

		rdev->asic->gart_set_page = &r100_pci_gart_set_page;

	}

	rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;

}

void radeon_check_arguments(struct radeon_device *rdev)

{

	/* vramlimit must be a power of two */

	switch (radeon_vram_limit) {

	case 0:

	case 4:

	case 8:

	case 16:

	case 32:

	case 64:

	case 128:

	case 256:

	case 512:

	case 1024:

	case 2048:

	case 4096:

		break;

	default:

		dev_warn(rdev->dev, "vram limit (%d) must be a power of 2\n",

				radeon_vram_limit);

		radeon_vram_limit = 0;

		break;

	}

	radeon_vram_limit = radeon_vram_limit << 20;

	/* gtt size must be power of two and greater or equal to 32M */

	switch (radeon_gart_size) {

	case 4:

	case 8:

	case 16:

		dev_warn(rdev->dev, "gart size (%d) too small forcing to 512M\n",

				radeon_gart_size);

		radeon_gart_size = 512;

		break;

	case 32:

	case 64:

	case 128:

	case 256:

	case 512:

	case 1024:

	case 2048:

	case 4096:

		break;

	default:

		dev_warn(rdev->dev, "gart size (%d) must be a power of 2\n",

				radeon_gart_size);

		radeon_gart_size = 512;

		break;

	}

	rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;

	/* AGP mode can only be -1, 1, 2, 4, 8 */

	switch (radeon_agpmode) {

	case -1:

	case 0:

	case 1:

	case 2:

	case 4:

	case 8:

		break;

	default:

		dev_warn(rdev->dev, "invalid AGP mode %d (valid mode: "

				"-1, 0, 1, 2, 4, 8)\n", radeon_agpmode);

		radeon_agpmode = 0;

		break;

	}

}

int radeon_device_init(struct radeon_device *rdev,

               struct drm_device *ddev,

               struct pci_dev *pdev,

               uint32_t flags)

{

	int r;

	int dma_bits;

    DRM_INFO("radeon: Initializing kernel modesetting.\n");

    rdev->shutdown = false;

    rdev->ddev = ddev;

    rdev->pdev = pdev;

    rdev->flags = flags;

    rdev->family = flags & RADEON_FAMILY_MASK;

    rdev->is_atom_bios = false;

    rdev->usec_timeout = RADEON_MAX_USEC_TIMEOUT;

    rdev->mc.gtt_size = radeon_gart_size * 1024 * 1024;

    rdev->gpu_lockup = false;

	rdev->accel_working = false;

    /* mutex initialization are all done here so we

     * can recall function without having locking issues */

 //   mutex_init(&rdev->cs_mutex);

 //   mutex_init(&rdev->ib_pool.mutex);

 //   mutex_init(&rdev->cp.mutex);

 //   rwlock_init(&rdev->fence_drv.lock);

	/* Set asic functions */

	r = radeon_asic_init(rdev);

	if (r)

		return r;

	radeon_check_arguments(rdev);

	if (rdev->flags & RADEON_IS_AGP && radeon_agpmode == -1) {

		radeon_agp_disable(rdev);

    }

	/* set DMA mask + need_dma32 flags.

	 * PCIE - can handle 40-bits.

	 * IGP - can handle 40-bits (in theory)

	 * AGP - generally dma32 is safest

	 * PCI - only dma32

	 */

	rdev->need_dma32 = false;

	if (rdev->flags & RADEON_IS_AGP)

		rdev->need_dma32 = true;

	if (rdev->flags & RADEON_IS_PCI)

		rdev->need_dma32 = true;

	dma_bits = rdev->need_dma32 ? 32 : 40;

	r = pci_set_dma_mask(rdev->pdev, DMA_BIT_MASK(dma_bits));

    if (r) {

        printk(KERN_WARNING "radeon: No suitable DMA available.\n");

    }

    /* Registers mapping */

    /* TODO: block userspace mapping of io register */

    rdev->rmmio_base = pci_resource_start(rdev->pdev, 2);

    rdev->rmmio_size = pci_resource_len(rdev->pdev, 2);

    rdev->rmmio =  (void*)MapIoMem(rdev->rmmio_base, rdev->rmmio_size,

                                   PG_SW+PG_NOCACHE);

    if (rdev->rmmio == NULL) {

        return -ENOMEM;

    }

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

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

	/* if we have > 1 VGA cards, then disable the radeon VGA resources */

	/* this will fail for cards that aren't VGA class devices, just

	 * ignore it */

//	r = vga_client_register(rdev->pdev, rdev, NULL, radeon_vga_set_decode);

//	if (r) {

//		return -EINVAL;

//	}

	r = radeon_init(rdev);

	if (r)

            return r;

	if (rdev->flags & RADEON_IS_AGP && !rdev->accel_working) {

		/* Acceleration not working on AGP card try again

		 * with fallback to PCI or PCIE GART

		 */

		radeon_gpu_reset(rdev);

		radeon_fini(rdev);

		radeon_agp_disable(rdev);

		r = radeon_init(rdev);

		if (r)

		return r;

	}

//	if (radeon_testing) {

//		radeon_test_moves(rdev);

//    }

//	if (radeon_benchmarking) {

//		radeon_benchmark(rdev);

//    }

	return 0;

}

/*

 * Driver load/unload

 */

int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)

{

    struct radeon_device *rdev;

    int r;

    ENTER();

    rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);

    if (rdev == NULL) {

        return -ENOMEM;

    };

    dev->dev_private = (void *)rdev;

    /* update BUS flag */

    if (drm_device_is_agp(dev)) {

        flags |= RADEON_IS_AGP;

    } else if (drm_device_is_pcie(dev)) {

        flags |= RADEON_IS_PCIE;

    } else {

        flags |= RADEON_IS_PCI;

    }

    /* radeon_device_init should report only fatal error

     * like memory allocation failure or iomapping failure,

     * or memory manager initialization failure, it must

     * properly initialize the GPU MC controller and permit

     * VRAM allocation

     */

    r = radeon_device_init(rdev, dev, dev->pdev, flags);

    if (r) {

        DRM_ERROR("Fatal error while trying to initialize radeon.\n");

        return r;

    }

    /* Again modeset_init should fail only on fatal error

     * otherwise it should provide enough functionalities

     * for shadowfb to run

     */

    if( radeon_modeset )

    {

        r = radeon_modeset_init(rdev);

        if (r) {

            return r;

        }

    };

    return 0;

}

videomode_t usermode;

int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent)

{

    static struct drm_device *dev;

    int ret;

    ENTER();

    dev = kzalloc(sizeof(*dev), 0);

    if (!dev)

        return -ENOMEM;

 //   ret = pci_enable_device(pdev);

 //   if (ret)

 //       goto err_g1;

 //   pci_set_master(pdev);

 //   if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {

 //       printk(KERN_ERR "DRM: Fill_in_dev failed.\n");

 //       goto err_g2;

 //   }

    dev->pdev = pdev;

    dev->pci_device = pdev->device;

    dev->pci_vendor = pdev->vendor;

    ret = radeon_driver_load_kms(dev, ent->driver_data );

    if (ret)

        goto err_g4;

    if( radeon_modeset )

        init_display_kms(dev->dev_private, &usermode);

    else

        init_display(dev->dev_private, &usermode);

    LEAVE();

    return 0;

err_g4:

//    drm_put_minor(&dev->primary);

//err_g3:

//    if (drm_core_check_feature(dev, DRIVER_MODESET))

//        drm_put_minor(&dev->control);

//err_g2:

//    pci_disable_device(pdev);

//err_g1:

    free(dev);

    LEAVE();

    return ret;

}

resource_size_t drm_get_resource_start(struct drm_device *dev, unsigned int resource)

{

    return pci_resource_start(dev->pdev, resource);

}

resource_size_t drm_get_resource_len(struct drm_device *dev, unsigned int resource)

{

    return pci_resource_len(dev->pdev, resource);

}

uint32_t __div64_32(uint64_t *n, uint32_t base)

{

        uint64_t rem = *n;

        uint64_t b = base;

        uint64_t res, d = 1;

        uint32_t high = rem >> 32;

        /* Reduce the thing a bit first */

        res = 0;

        if (high >= base) {

                high /= base;

                res = (uint64_t) high << 32;

                rem -= (uint64_t) (high*base) << 32;

        }

        while ((int64_t)b > 0 && b < rem) {

                b = b+b;

                d = d+d;

        }

        do {

                if (rem >= b) {

                        rem -= b;

                        res += d;

                }

                b >>= 1;

                d >>= 1;

        } while (d);

        *n = res;

        return rem;

}

static struct pci_device_id pciidlist[] = {

    radeon_PCI_IDS

};

#define API_VERSION     0x01000100

#define SRV_GETVERSION  0

#define SRV_ENUM_MODES  1

#define SRV_SET_MODE    2

int _stdcall display_handler(ioctl_t *io)

{

    int    retval = -1;

    u32_t *inp;

    u32_t *outp;

    inp = io->input;

    outp = io->output;

    switch(io->io_code)

    {

        case SRV_GETVERSION:

            if(io->out_size==4)

            {

                *outp  = API_VERSION;

                retval = 0;

            }

            break;

        case SRV_ENUM_MODES:

            dbgprintf("SRV_ENUM_MODES inp %x inp_size %x out_size %x\n",

                       inp, io->inp_size, io->out_size );

            if( radeon_modeset &&

                (outp != NULL) && (io->out_size == 4) &&

                (io->inp_size == *outp * sizeof(videomode_t)) )

            {

                retval = get_modes((videomode_t*)inp, outp);

            };

            break;

        case SRV_SET_MODE:

            dbgprintf("SRV_SET_MODE inp %x inp_size %x\n",

                       inp, io->inp_size);

            if(  radeon_modeset   &&

                (inp != NULL) &&

                (io->inp_size == sizeof(videomode_t)) )

            {

                retval = set_user_mode((videomode_t*)inp);

            };

            break;

    };

    return retval;

}

static char  log[256];

static pci_dev_t device;

u32_t drvEntry(int action, char *cmdline)

{

    struct radeon_device *rdev = NULL;

    struct pci_device_id  *ent;

    int     err;

    u32_t   retval = 0;

    if(action != 1)

        return 0;

    if( GetService("DISPLAY") != 0 )

        return 0;

    if( cmdline && *cmdline )

        parse_cmdline(cmdline, &usermode, log, &radeon_modeset);

    if(!dbg_open(log))

    {

        strcpy(log, "/rd/1/drivers/atikms.log");

        if(!dbg_open(log))

        {

            printf("Can't open %s\nExit\n", log);

            return 0;

        };

    }

    dbgprintf("Radeon RC10 cmdline %s\n", cmdline);

    enum_pci_devices();

    ent = find_pci_device(&device, pciidlist);

    if( unlikely(ent == NULL) )

    {

        dbgprintf("device not found\n");

        return 0;

    };

    dbgprintf("device %x:%x\n", device.pci_dev.vendor,

                                device.pci_dev.device);

    err = drm_get_dev(&device.pci_dev, ent);

    rdev = rdisplay->ddev->dev_private;

    if( (rdev->asic == &r600_asic) ||

        (rdev->asic == &rv770_asic))

        r600_2D_test(rdev);

    else if (rdev->asic != &evergreen_asic)

        r100_2D_test(rdev);

    err = RegService("DISPLAY", display_handler);

    if( err != 0)

        dbgprintf("Set DISPLAY handler\n");

    return err;

};

void drm_vblank_post_modeset(struct drm_device *dev, int crtc)

{};

void drm_vblank_pre_modeset(struct drm_device *dev, int crtc)

{};