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path: root/drivers/gpu/drm/radeon/radeon_bios.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_bios.c')
-rw-r--r--drivers/gpu/drm/radeon/radeon_bios.c390
1 files changed, 390 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c
new file mode 100644
index 000000000000..96e37a6e7ce4
--- /dev/null
+++ b/drivers/gpu/drm/radeon/radeon_bios.c
@@ -0,0 +1,390 @@
+/*
+ * 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.
+ */
+static bool radeon_read_bios(struct radeon_device *rdev)
+{
+ uint8_t __iomem *bios;
+ size_t size;
+
+ rdev->bios = NULL;
+ 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->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;
+
+ 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;
+}