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linux/drivers/gpu/drm/radeon/radeon_bios.c
Alex Deucher b442962a9e drm/radeon/kms: add support for "Surround View" 
"Surround View" is an option in the system bios that
enables the AMD IGP chip in conjunction with a
discrete AMD card.  However, since the IGP vbios is
part of the system bios it is not accessible via the
rom bar or the legacy vga location.  When "Surround View"
is enabled in the system bios, the system bios puts a
copy of the IGP vbios image at the start of vram.

This patch adds support for reading the vbios image out
of vram on IGP cards.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-10-05 10:00:56 +10:00

436 lines
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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 "drmP.h"
#include "radeon_reg.h"
#include "radeon.h"
#include "atom.h"
/*
* BIOS.
*/
/* If you boot an IGP board with a discrete card as the primary,
* the IGP rom is not accessible via the rom bar as the IGP rom is
* part of the system bios. On boot, the system bios puts a
* copy of the igp rom at the start of vram if a discrete card is
* present.
*/
static bool igp_read_bios_from_vram(struct radeon_device *rdev)
{
uint8_t __iomem *bios;
resource_size_t vram_base;
resource_size_t size = 256 * 1024; /* ??? */
rdev->bios = NULL;
vram_base = drm_get_resource_start(rdev->ddev, 0);
bios = ioremap(vram_base, size);
if (!bios) {
DRM_ERROR("Unable to mmap vram\n");
return false;
}
if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) {
iounmap(bios);
DRM_ERROR("bad rom signature\n");
return false;
}
rdev->bios = kmalloc(size, GFP_KERNEL);
if (rdev->bios == NULL) {
iounmap(bios);
DRM_ERROR("kmalloc failed\n");
return false;
}
memcpy(rdev->bios, bios, size);
iounmap(bios);
return true;
}
static bool radeon_read_bios(struct radeon_device *rdev)
{
uint8_t __iomem *bios;
size_t size;
rdev->bios = NULL;
/* XXX: some cards may return 0 for rom size? ddx has a workaround */
bios = pci_map_rom(rdev->pdev, &size);
if (!bios) {
return false;
}
if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) {
pci_unmap_rom(rdev->pdev, bios);
return false;
}
rdev->bios = kmalloc(size, GFP_KERNEL);
if (rdev->bios == NULL) {
pci_unmap_rom(rdev->pdev, bios);
return false;
}
memcpy(rdev->bios, bios, size);
pci_unmap_rom(rdev->pdev, bios);
return true;
}
static bool r700_read_disabled_bios(struct radeon_device *rdev)
{
uint32_t viph_control;
uint32_t bus_cntl;
uint32_t d1vga_control;
uint32_t d2vga_control;
uint32_t vga_render_control;
uint32_t rom_cntl;
uint32_t cg_spll_func_cntl = 0;
uint32_t cg_spll_status;
bool r;
viph_control = RREG32(RADEON_VIPH_CONTROL);
bus_cntl = RREG32(RADEON_BUS_CNTL);
d1vga_control = RREG32(AVIVO_D1VGA_CONTROL);
d2vga_control = RREG32(AVIVO_D2VGA_CONTROL);
vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL);
rom_cntl = RREG32(R600_ROM_CNTL);
/* disable VIP */
WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN));
/* enable the rom */
WREG32(RADEON_BUS_CNTL, (bus_cntl & ~RADEON_BUS_BIOS_DIS_ROM));
/* Disable VGA mode */
WREG32(AVIVO_D1VGA_CONTROL,
(d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
AVIVO_DVGA_CONTROL_TIMING_SELECT)));
WREG32(AVIVO_D2VGA_CONTROL,
(d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
AVIVO_DVGA_CONTROL_TIMING_SELECT)));
WREG32(AVIVO_VGA_RENDER_CONTROL,
(vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK));
if (rdev->family == CHIP_RV730) {
cg_spll_func_cntl = RREG32(R600_CG_SPLL_FUNC_CNTL);
/* enable bypass mode */
WREG32(R600_CG_SPLL_FUNC_CNTL, (cg_spll_func_cntl |
R600_SPLL_BYPASS_EN));
/* wait for SPLL_CHG_STATUS to change to 1 */
cg_spll_status = 0;
while (!(cg_spll_status & R600_SPLL_CHG_STATUS))
cg_spll_status = RREG32(R600_CG_SPLL_STATUS);
WREG32(R600_ROM_CNTL, (rom_cntl & ~R600_SCK_OVERWRITE));
} else
WREG32(R600_ROM_CNTL, (rom_cntl | R600_SCK_OVERWRITE));
r = radeon_read_bios(rdev);
/* restore regs */
if (rdev->family == CHIP_RV730) {
WREG32(R600_CG_SPLL_FUNC_CNTL, cg_spll_func_cntl);
/* wait for SPLL_CHG_STATUS to change to 1 */
cg_spll_status = 0;
while (!(cg_spll_status & R600_SPLL_CHG_STATUS))
cg_spll_status = RREG32(R600_CG_SPLL_STATUS);
}
WREG32(RADEON_VIPH_CONTROL, viph_control);
WREG32(RADEON_BUS_CNTL, bus_cntl);
WREG32(AVIVO_D1VGA_CONTROL, d1vga_control);
WREG32(AVIVO_D2VGA_CONTROL, d2vga_control);
WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control);
WREG32(R600_ROM_CNTL, rom_cntl);
return r;
}
static bool r600_read_disabled_bios(struct radeon_device *rdev)
{
uint32_t viph_control;
uint32_t bus_cntl;
uint32_t d1vga_control;
uint32_t d2vga_control;
uint32_t vga_render_control;
uint32_t rom_cntl;
uint32_t general_pwrmgt;
uint32_t low_vid_lower_gpio_cntl;
uint32_t medium_vid_lower_gpio_cntl;
uint32_t high_vid_lower_gpio_cntl;
uint32_t ctxsw_vid_lower_gpio_cntl;
uint32_t lower_gpio_enable;
bool r;
viph_control = RREG32(RADEON_VIPH_CONTROL);
bus_cntl = RREG32(RADEON_BUS_CNTL);
d1vga_control = RREG32(AVIVO_D1VGA_CONTROL);
d2vga_control = RREG32(AVIVO_D2VGA_CONTROL);
vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL);
rom_cntl = RREG32(R600_ROM_CNTL);
general_pwrmgt = RREG32(R600_GENERAL_PWRMGT);
low_vid_lower_gpio_cntl = RREG32(R600_LOW_VID_LOWER_GPIO_CNTL);
medium_vid_lower_gpio_cntl = RREG32(R600_MEDIUM_VID_LOWER_GPIO_CNTL);
high_vid_lower_gpio_cntl = RREG32(R600_HIGH_VID_LOWER_GPIO_CNTL);
ctxsw_vid_lower_gpio_cntl = RREG32(R600_CTXSW_VID_LOWER_GPIO_CNTL);
lower_gpio_enable = RREG32(R600_LOWER_GPIO_ENABLE);
/* disable VIP */
WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN));
/* enable the rom */
WREG32(RADEON_BUS_CNTL, (bus_cntl & ~RADEON_BUS_BIOS_DIS_ROM));
/* Disable VGA mode */
WREG32(AVIVO_D1VGA_CONTROL,
(d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
AVIVO_DVGA_CONTROL_TIMING_SELECT)));
WREG32(AVIVO_D2VGA_CONTROL,
(d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
AVIVO_DVGA_CONTROL_TIMING_SELECT)));
WREG32(AVIVO_VGA_RENDER_CONTROL,
(vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK));
WREG32(R600_ROM_CNTL,
((rom_cntl & ~R600_SCK_PRESCALE_CRYSTAL_CLK_MASK) |
(1 << R600_SCK_PRESCALE_CRYSTAL_CLK_SHIFT) |
R600_SCK_OVERWRITE));
WREG32(R600_GENERAL_PWRMGT, (general_pwrmgt & ~R600_OPEN_DRAIN_PADS));
WREG32(R600_LOW_VID_LOWER_GPIO_CNTL,
(low_vid_lower_gpio_cntl & ~0x400));
WREG32(R600_MEDIUM_VID_LOWER_GPIO_CNTL,
(medium_vid_lower_gpio_cntl & ~0x400));
WREG32(R600_HIGH_VID_LOWER_GPIO_CNTL,
(high_vid_lower_gpio_cntl & ~0x400));
WREG32(R600_CTXSW_VID_LOWER_GPIO_CNTL,
(ctxsw_vid_lower_gpio_cntl & ~0x400));
WREG32(R600_LOWER_GPIO_ENABLE, (lower_gpio_enable | 0x400));
r = radeon_read_bios(rdev);
/* restore regs */
WREG32(RADEON_VIPH_CONTROL, viph_control);
WREG32(RADEON_BUS_CNTL, bus_cntl);
WREG32(AVIVO_D1VGA_CONTROL, d1vga_control);
WREG32(AVIVO_D2VGA_CONTROL, d2vga_control);
WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control);
WREG32(R600_ROM_CNTL, rom_cntl);
WREG32(R600_GENERAL_PWRMGT, general_pwrmgt);
WREG32(R600_LOW_VID_LOWER_GPIO_CNTL, low_vid_lower_gpio_cntl);
WREG32(R600_MEDIUM_VID_LOWER_GPIO_CNTL, medium_vid_lower_gpio_cntl);
WREG32(R600_HIGH_VID_LOWER_GPIO_CNTL, high_vid_lower_gpio_cntl);
WREG32(R600_CTXSW_VID_LOWER_GPIO_CNTL, ctxsw_vid_lower_gpio_cntl);
WREG32(R600_LOWER_GPIO_ENABLE, lower_gpio_enable);
return r;
}
static bool avivo_read_disabled_bios(struct radeon_device *rdev)
{
uint32_t seprom_cntl1;
uint32_t viph_control;
uint32_t bus_cntl;
uint32_t d1vga_control;
uint32_t d2vga_control;
uint32_t vga_render_control;
uint32_t gpiopad_a;
uint32_t gpiopad_en;
uint32_t gpiopad_mask;
bool r;
seprom_cntl1 = RREG32(RADEON_SEPROM_CNTL1);
viph_control = RREG32(RADEON_VIPH_CONTROL);
bus_cntl = RREG32(RADEON_BUS_CNTL);
d1vga_control = RREG32(AVIVO_D1VGA_CONTROL);
d2vga_control = RREG32(AVIVO_D2VGA_CONTROL);
vga_render_control = RREG32(AVIVO_VGA_RENDER_CONTROL);
gpiopad_a = RREG32(RADEON_GPIOPAD_A);
gpiopad_en = RREG32(RADEON_GPIOPAD_EN);
gpiopad_mask = RREG32(RADEON_GPIOPAD_MASK);
WREG32(RADEON_SEPROM_CNTL1,
((seprom_cntl1 & ~RADEON_SCK_PRESCALE_MASK) |
(0xc << RADEON_SCK_PRESCALE_SHIFT)));
WREG32(RADEON_GPIOPAD_A, 0);
WREG32(RADEON_GPIOPAD_EN, 0);
WREG32(RADEON_GPIOPAD_MASK, 0);
/* disable VIP */
WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN));
/* enable the rom */
WREG32(RADEON_BUS_CNTL, (bus_cntl & ~RADEON_BUS_BIOS_DIS_ROM));
/* Disable VGA mode */
WREG32(AVIVO_D1VGA_CONTROL,
(d1vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
AVIVO_DVGA_CONTROL_TIMING_SELECT)));
WREG32(AVIVO_D2VGA_CONTROL,
(d2vga_control & ~(AVIVO_DVGA_CONTROL_MODE_ENABLE |
AVIVO_DVGA_CONTROL_TIMING_SELECT)));
WREG32(AVIVO_VGA_RENDER_CONTROL,
(vga_render_control & ~AVIVO_VGA_VSTATUS_CNTL_MASK));
r = radeon_read_bios(rdev);
/* restore regs */
WREG32(RADEON_SEPROM_CNTL1, seprom_cntl1);
WREG32(RADEON_VIPH_CONTROL, viph_control);
WREG32(RADEON_BUS_CNTL, bus_cntl);
WREG32(AVIVO_D1VGA_CONTROL, d1vga_control);
WREG32(AVIVO_D2VGA_CONTROL, d2vga_control);
WREG32(AVIVO_VGA_RENDER_CONTROL, vga_render_control);
WREG32(RADEON_GPIOPAD_A, gpiopad_a);
WREG32(RADEON_GPIOPAD_EN, gpiopad_en);
WREG32(RADEON_GPIOPAD_MASK, gpiopad_mask);
return r;
}
static bool legacy_read_disabled_bios(struct radeon_device *rdev)
{
uint32_t seprom_cntl1;
uint32_t viph_control;
uint32_t bus_cntl;
uint32_t crtc_gen_cntl;
uint32_t crtc2_gen_cntl;
uint32_t crtc_ext_cntl;
uint32_t fp2_gen_cntl;
bool r;
seprom_cntl1 = RREG32(RADEON_SEPROM_CNTL1);
viph_control = RREG32(RADEON_VIPH_CONTROL);
bus_cntl = RREG32(RADEON_BUS_CNTL);
crtc_gen_cntl = RREG32(RADEON_CRTC_GEN_CNTL);
crtc2_gen_cntl = 0;
crtc_ext_cntl = RREG32(RADEON_CRTC_EXT_CNTL);
fp2_gen_cntl = 0;
if (rdev->ddev->pci_device == PCI_DEVICE_ID_ATI_RADEON_QY) {
fp2_gen_cntl = RREG32(RADEON_FP2_GEN_CNTL);
}
if (!(rdev->flags & RADEON_SINGLE_CRTC)) {
crtc2_gen_cntl = RREG32(RADEON_CRTC2_GEN_CNTL);
}
WREG32(RADEON_SEPROM_CNTL1,
((seprom_cntl1 & ~RADEON_SCK_PRESCALE_MASK) |
(0xc << RADEON_SCK_PRESCALE_SHIFT)));
/* disable VIP */
WREG32(RADEON_VIPH_CONTROL, (viph_control & ~RADEON_VIPH_EN));
/* enable the rom */
WREG32(RADEON_BUS_CNTL, (bus_cntl & ~RADEON_BUS_BIOS_DIS_ROM));
/* Turn off mem requests and CRTC for both controllers */
WREG32(RADEON_CRTC_GEN_CNTL,
((crtc_gen_cntl & ~RADEON_CRTC_EN) |
(RADEON_CRTC_DISP_REQ_EN_B |
RADEON_CRTC_EXT_DISP_EN)));
if (!(rdev->flags & RADEON_SINGLE_CRTC)) {
WREG32(RADEON_CRTC2_GEN_CNTL,
((crtc2_gen_cntl & ~RADEON_CRTC2_EN) |
RADEON_CRTC2_DISP_REQ_EN_B));
}
/* Turn off CRTC */
WREG32(RADEON_CRTC_EXT_CNTL,
((crtc_ext_cntl & ~RADEON_CRTC_CRT_ON) |
(RADEON_CRTC_SYNC_TRISTAT |
RADEON_CRTC_DISPLAY_DIS)));
if (rdev->ddev->pci_device == PCI_DEVICE_ID_ATI_RADEON_QY) {
WREG32(RADEON_FP2_GEN_CNTL, (fp2_gen_cntl & ~RADEON_FP2_ON));
}
r = radeon_read_bios(rdev);
/* restore regs */
WREG32(RADEON_SEPROM_CNTL1, seprom_cntl1);
WREG32(RADEON_VIPH_CONTROL, viph_control);
WREG32(RADEON_BUS_CNTL, bus_cntl);
WREG32(RADEON_CRTC_GEN_CNTL, crtc_gen_cntl);
if (!(rdev->flags & RADEON_SINGLE_CRTC)) {
WREG32(RADEON_CRTC2_GEN_CNTL, crtc2_gen_cntl);
}
WREG32(RADEON_CRTC_EXT_CNTL, crtc_ext_cntl);
if (rdev->ddev->pci_device == PCI_DEVICE_ID_ATI_RADEON_QY) {
WREG32(RADEON_FP2_GEN_CNTL, fp2_gen_cntl);
}
return r;
}
static bool radeon_read_disabled_bios(struct radeon_device *rdev)
{
if (rdev->flags & RADEON_IS_IGP)
return igp_read_bios_from_vram(rdev);
else if (rdev->family >= CHIP_RV770)
return r700_read_disabled_bios(rdev);
else if (rdev->family >= CHIP_R600)
return r600_read_disabled_bios(rdev);
else if (rdev->family >= CHIP_RS600)
return avivo_read_disabled_bios(rdev);
else
return legacy_read_disabled_bios(rdev);
}
bool radeon_get_bios(struct radeon_device *rdev)
{
bool r;
uint16_t tmp;
if (rdev->flags & RADEON_IS_IGP) {
r = igp_read_bios_from_vram(rdev);
if (r == false)
r = radeon_read_bios(rdev);
} else
r = radeon_read_bios(rdev);
if (r == false) {
r = radeon_read_disabled_bios(rdev);
}
if (r == false || rdev->bios == NULL) {
DRM_ERROR("Unable to locate a BIOS ROM\n");
rdev->bios = NULL;
return false;
}
if (rdev->bios[0] != 0x55 || rdev->bios[1] != 0xaa) {
goto free_bios;
}
rdev->bios_header_start = RBIOS16(0x48);
if (!rdev->bios_header_start) {
goto free_bios;
}
tmp = rdev->bios_header_start + 4;
if (!memcmp(rdev->bios + tmp, "ATOM", 4) ||
!memcmp(rdev->bios + tmp, "MOTA", 4)) {
rdev->is_atom_bios = true;
} else {
rdev->is_atom_bios = false;
}
DRM_DEBUG("%sBIOS detected\n", rdev->is_atom_bios ? "ATOM" : "COM");
return true;
free_bios:
kfree(rdev->bios);
rdev->bios = NULL;
return false;
}
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