/* SPDX-License-Identifier: GPL-2.0-or-later */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* Display Type: * 0 - only internal display aka eDP attached * 1 - only external display aka HDMI/USB-C attached * 2 - dual display aka both internal and external display attached */ enum display_type { INTERNAL_DISPLAY_ONLY, EXTERNAL_DISPLAY_ONLY, DUAL_DISPLAY, }; #define GFX_MBUS_CTL 0x4438C #define GFX_MBUS_SEL(x) (GFX_MBUS_CTL + (x)) #define GFX_MBUS_JOIN BIT(31) #define GFX_MBUS_HASHING_MODE BIT(30) #define GFX_MBUS_JOIN_PIPE_SEL (BIT(28) | BIT(27) | BIT(26)) /* SoC Overrides */ __weak void graphics_soc_panel_init(struct device *dev) { /* * User needs to implement SoC override in case wishes * to perform certain specific graphics initialization */ } __weak const struct i915_gpu_controller_info * intel_igd_get_controller_info(const struct device *device) { return NULL; } static uint32_t graphics_get_ddi_func_ctrl(unsigned long reg) { uint32_t ddi_func_ctrl = graphics_gtt_read(reg); ddi_func_ctrl &= TRANS_DDI_PORT_MASK; return ddi_func_ctrl; } /* * Transcoders contain the timing generators for eDP, DP, and HDMI interfaces. * Intel transcoders are based on Quick Sync Video, which offloads video * encoding and decoding tasks from the CPU to the GPU. * * On Intel silicon, there are four display pipes (DDI-A to DDI-D) that support * blending, color adjustments, scaling, and dithering. * * From the display block diagram perspective, the front end of the display * contains the pipes. The pipes connect to the transcoder. The transcoder * (except for wireless) connects to the DDIs to drive the IO/PHY. * * This logic checks if the DDI-A port is attached to the transcoder and * enabled (bit 27). Traditionally, the on-board display (eDP) is attached to DDI-A. * If the above conditions is met, then the on-board display is present and enabled. * * On platforms without an on-board display (i.e., value at bits 27-30 is between 2-9), * meaning that DDI-A (eDP) is not enabled. * * Additionally, if bits 27-30 are all set to 0, this means that no DDI ports * are enabled, and there is no display. * * Consider external display is present and enabled, if eDP/DDI-A is not enabled * and transcoder is attached to any DDI port (bits 27-30 are not zero). */ static enum display_type get_external_display_status(void) { /* Read the transcoder register for DDI-A (eDP) */ uint32_t ddi_a_func_ctrl = graphics_get_ddi_func_ctrl(TRANS_DDI_FUNC_CTL_A); /* Read the transcoder register for DDI-B (HDMI) */ uint32_t ddi_b_func_ctrl = graphics_get_ddi_func_ctrl(TRANS_DDI_FUNC_CTL_B); /* * Check if transcoder is none or connected to DDI-A port (aka eDP). * Report no external display in both cases. */ if (ddi_a_func_ctrl == TRANS_DDI_PORT_NONE) { return INTERNAL_DISPLAY_ONLY; } else { if (ddi_a_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_A) && (ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_B) #if CONFIG(INTEL_GMA_VERSION_2) || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C1) || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C2) || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C3) || ddi_b_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_USB_C4) #endif )) { /* * Dual display detected: both DDI-A(eDP) and * DDI-B(HDMI) pipes are active */ return DUAL_DISPLAY; } else { if (ddi_a_func_ctrl == TRANS_DDI_SELECT_PORT(PORT_A)) return INTERNAL_DISPLAY_ONLY; else return EXTERNAL_DISPLAY_ONLY; } } } /* Check and report if an external display is attached */ int fsp_soc_report_external_display(void) { return graphics_get_framebuffer_address() && get_external_display_status(); } static void configure_ddi_a_bifurcation(void) { u32 ddi_buf_ctl = graphics_gtt_read(DDI_BUF_CTL_A); /* Only program if the buffer is not enabled yet. */ if (ddi_buf_ctl & DDI_BUF_CTL_ENABLE) return; if (CONFIG(SOC_INTEL_GFX_ENABLE_DDI_E_BIFURCATION)) ddi_buf_ctl &= ~DDI_A_4_LANES; else ddi_buf_ctl |= DDI_A_4_LANES; graphics_gtt_write(DDI_BUF_CTL_A, ddi_buf_ctl); } static void gma_init(struct device *const dev) { intel_gma_init_igd_opregion(); /* SoC specific panel init/configuration. If FSP has already run/configured the IGD, we can assume the panel/backlight control have already been set up sufficiently and that we shouldn't attempt to reconfigure things. */ if (!CONFIG(RUN_FSP_GOP)) graphics_soc_panel_init(dev); if (CONFIG(SOC_INTEL_GFX_HAVE_DDI_A_BIFURCATION) && !acpi_is_wakeup_s3()) configure_ddi_a_bifurcation(); /* * GFX PEIM module inside FSP binary is taking care of graphics * initialization based on RUN_FSP_GOP Kconfig option and input * VBT file. Need to report the framebuffer info after PCI enumeration. * * In case of non-FSP solution, SoC need to select another * Kconfig to perform GFX initialization. */ if (CONFIG(RUN_FSP_GOP) && display_init_required()) { const struct soc_intel_common_config *config = chip_get_common_soc_structure(); fsp_report_framebuffer_info(graphics_get_framebuffer_address(), config->panel_orientation); return; } if (!CONFIG(NO_GFX_INIT)) pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER); if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) { if (!acpi_is_wakeup_s3() && display_init_required()) { int lightup_ok; gma_gfxinit(&lightup_ok); gfx_set_init_done(lightup_ok); } } else { /* Initialize PCI device, load/execute BIOS Option ROM */ pci_dev_init(dev); } } static void gma_generate_ssdt(const struct device *device) { const struct i915_gpu_controller_info *gfx = intel_igd_get_controller_info(device); if (gfx) drivers_intel_gma_displays_ssdt_generate(gfx); } static int is_graphics_disabled(struct device *dev) { /* Check if Graphics PCI device is disabled */ if (!dev || !dev->enabled) return 1; return 0; } static uintptr_t graphics_get_bar(struct device *dev, unsigned long index) { struct resource *gm_res; gm_res = probe_resource(dev, index); if (!gm_res) return 0; return gm_res->base; } uintptr_t graphics_get_framebuffer_address(void) { uintptr_t memory_base; struct device *dev = pcidev_path_on_root(SA_DEVFN_IGD); if (is_graphics_disabled(dev)) return 0; memory_base = graphics_get_bar(dev, PCI_BASE_ADDRESS_2); if (!memory_base) die_with_post_code(POSTCODE_HW_INIT_FAILURE, "Graphic memory bar2 is not programmed!"); memory_base += CONFIG_SOC_INTEL_GFX_FRAMEBUFFER_OFFSET; return memory_base; } static uintptr_t graphics_get_gtt_base(void) { static uintptr_t gtt_base; struct device *dev = pcidev_path_on_root(SA_DEVFN_IGD); if (is_graphics_disabled(dev)) die("IGD is disabled!"); /* * GFX PCI config space offset 0x10 know as Graphics * Translation Table Memory Mapped Range Address * (GTTMMADR) */ if (!gtt_base) { gtt_base = graphics_get_bar(dev, PCI_BASE_ADDRESS_0); if (!gtt_base) die_with_post_code(POSTCODE_HW_INIT_FAILURE, "GTTMMADR is not programmed!"); } return gtt_base; } uint32_t graphics_gtt_read(unsigned long reg) { return read32p(graphics_get_gtt_base() + reg); } void graphics_gtt_write(unsigned long reg, uint32_t data) { write32p(graphics_get_gtt_base() + reg, data); } void graphics_gtt_rmw(unsigned long reg, uint32_t andmask, uint32_t ormask) { uint32_t val = graphics_gtt_read(reg); val &= andmask; val |= ormask; graphics_gtt_write(reg, val); } static void graphics_dev_read_resources(struct device *dev) { pci_dev_read_resources(dev); if (CONFIG(SOC_INTEL_GFX_NON_PREFETCHABLE_MMIO)) { struct resource *res_bar0 = find_resource(dev, PCI_BASE_ADDRESS_0); if (res_bar0->flags & IORESOURCE_PREFETCH) res_bar0->flags &= ~IORESOURCE_PREFETCH; } /* * If libhwbase static MMIO driver is used, IGD BAR 0 has to be set to * CONFIG_GFX_GMA_DEFAULT_MMIO for the libgfxinit to operate properly. */ if (CONFIG(MAINBOARD_USE_LIBGFXINIT) && CONFIG(HWBASE_STATIC_MMIO)) { struct resource *res_bar0 = find_resource(dev, PCI_BASE_ADDRESS_0); res_bar0->base = CONFIG_GFX_GMA_DEFAULT_MMIO; res_bar0->flags |= IORESOURCE_ASSIGNED; pci_dev_set_resources(dev); res_bar0->flags |= IORESOURCE_FIXED; } } static void graphics_join_mbus(void) { enum display_type type = get_external_display_status(); uint32_t hashing_mode = 0; /* 2x2 */ if (type == INTERNAL_DISPLAY_ONLY) { hashing_mode = GFX_MBUS_HASHING_MODE; /* 1x4 */ /* Only eDP pipes is joining the MBUS */ graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_A), PIPE_A, GFX_MBUS_JOIN | hashing_mode); } else if (type == DUAL_DISPLAY) { /* All pipes are joining the MBUS */ graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_A), PIPE_A, GFX_MBUS_JOIN | hashing_mode); graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_B), PIPE_B, GFX_MBUS_JOIN | hashing_mode); graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_C), PIPE_C, GFX_MBUS_JOIN | hashing_mode); #if CONFIG(INTEL_GMA_VERSION_2) graphics_gtt_rmw(GFX_MBUS_SEL(PIPE_D), PIPE_D, GFX_MBUS_JOIN | hashing_mode); #endif } else { /* No pipe joins the MBUS */ graphics_gtt_rmw(GFX_MBUS_CTL, GFX_MBUS_JOIN_PIPE_SEL, GFX_MBUS_JOIN | hashing_mode); } } static void graphics_dev_final(struct device *dev) { pci_dev_request_bus_master(dev); /* * Call function to join the MBUS if GFX PEIM module inside FSP * binary is taking care of graphics initialization based on * RUN_FSP_GOP config option. * * Skip FW joining the MBUS in case of non-FSP solution. */ if (CONFIG(RUN_FSP_GOP) && CONFIG(SOC_INTEL_GFX_MBUS_JOIN) && display_init_required()) graphics_join_mbus(); } const struct device_operations graphics_ops = { .read_resources = graphics_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = gma_init, .final = graphics_dev_final, .ops_pci = &pci_dev_ops_pci, #if CONFIG(HAVE_ACPI_TABLES) .acpi_fill_ssdt = gma_generate_ssdt, #endif .scan_bus = scan_generic_bus, }; static const unsigned short pci_device_ids[] = { PCI_DID_INTEL_PTL_GT2, PCI_DID_INTEL_LNL_M_GT2, PCI_DID_INTEL_RPL_U_GT1, PCI_DID_INTEL_RPL_U_GT2, PCI_DID_INTEL_RPL_U_GT3, PCI_DID_INTEL_RPL_U_GT4, PCI_DID_INTEL_RPL_U_GT5, PCI_DID_INTEL_RPL_P_GT1, PCI_DID_INTEL_RPL_P_GT2, PCI_DID_INTEL_RPL_P_GT3, PCI_DID_INTEL_RPL_P_GT4, PCI_DID_INTEL_RPL_P_GT5, PCI_DID_INTEL_MTL_M_GT2, PCI_DID_INTEL_MTL_P_GT2_1, PCI_DID_INTEL_MTL_P_GT2_2, PCI_DID_INTEL_MTL_P_GT2_3, PCI_DID_INTEL_MTL_P_GT2_4, PCI_DID_INTEL_MTL_P_GT2_5, PCI_DID_INTEL_APL_IGD_HD_505, PCI_DID_INTEL_APL_IGD_HD_500, PCI_DID_INTEL_CNL_GT2_ULX_1, PCI_DID_INTEL_CNL_GT2_ULX_2, PCI_DID_INTEL_CNL_GT2_ULX_3, PCI_DID_INTEL_CNL_GT2_ULX_4, PCI_DID_INTEL_CNL_GT2_ULT_1, PCI_DID_INTEL_CNL_GT2_ULT_2, PCI_DID_INTEL_CNL_GT2_ULT_3, PCI_DID_INTEL_CNL_GT2_ULT_4, PCI_DID_INTEL_GLK_IGD, PCI_DID_INTEL_GLK_IGD_EU12, PCI_DID_INTEL_WHL_GT1_ULT_1, PCI_DID_INTEL_WHL_GT2_ULT_1, PCI_DID_INTEL_AML_GT2_ULX, PCI_DID_INTEL_CFL_H_GT2, PCI_DID_INTEL_CFL_H_XEON_GT2, PCI_DID_INTEL_CFL_S_GT1_1, PCI_DID_INTEL_CFL_S_GT1_2, PCI_DID_INTEL_CFL_S_GT2_1, PCI_DID_INTEL_CFL_S_GT2_2, PCI_DID_INTEL_CFL_S_GT2_3, PCI_DID_INTEL_CFL_S_GT2_4, PCI_DID_INTEL_CFL_S_GT2_5, PCI_DID_INTEL_CML_GT1_ULT_1, PCI_DID_INTEL_CML_GT1_ULT_2, PCI_DID_INTEL_CML_GT2_ULT_1, PCI_DID_INTEL_CML_GT2_ULT_2, PCI_DID_INTEL_CML_GT1_ULT_3, PCI_DID_INTEL_CML_GT1_ULT_4, PCI_DID_INTEL_CML_GT2_ULT_5, PCI_DID_INTEL_CML_GT2_ULT_6, PCI_DID_INTEL_CML_GT2_ULT_7, PCI_DID_INTEL_CML_GT2_ULT_8, PCI_DID_INTEL_CML_GT2_ULT_3, PCI_DID_INTEL_CML_GT2_ULT_4, PCI_DID_INTEL_CML_GT1_ULX_1, PCI_DID_INTEL_CML_GT2_ULX_1, PCI_DID_INTEL_CML_GT1_S_1, PCI_DID_INTEL_CML_GT1_S_2, PCI_DID_INTEL_CML_GT2_S_1, PCI_DID_INTEL_CML_GT2_S_2, PCI_DID_INTEL_CML_GT1_H_1, PCI_DID_INTEL_CML_GT1_H_2, PCI_DID_INTEL_CML_GT2_H_1, PCI_DID_INTEL_CML_GT2_H_2, PCI_DID_INTEL_CML_GT2_S_G0, PCI_DID_INTEL_CML_GT2_S_P0, PCI_DID_INTEL_CML_GT2_H_R0, PCI_DID_INTEL_CML_GT2_H_R1, PCI_DID_INTEL_TGL_GT0, PCI_DID_INTEL_TGL_GT1_H_32, PCI_DID_INTEL_TGL_GT1_H_16, PCI_DID_INTEL_TGL_GT2_ULT, PCI_DID_INTEL_TGL_GT2_ULX, PCI_DID_INTEL_TGL_GT3_ULT, PCI_DID_INTEL_TGL_GT2_ULT_1, PCI_DID_INTEL_EHL_GT1_1, PCI_DID_INTEL_EHL_GT2_1, PCI_DID_INTEL_EHL_GT1_2, PCI_DID_INTEL_EHL_GT2_2, PCI_DID_INTEL_EHL_GT1_2_1, PCI_DID_INTEL_EHL_GT1_3, PCI_DID_INTEL_EHL_GT2_3, PCI_DID_INTEL_JSL_GT1, PCI_DID_INTEL_JSL_GT2, PCI_DID_INTEL_JSL_GT3, PCI_DID_INTEL_JSL_GT4, PCI_DID_INTEL_ADL_GT0, PCI_DID_INTEL_ADL_GT1, PCI_DID_INTEL_ADL_GT1_1, PCI_DID_INTEL_ADL_GT1_2, PCI_DID_INTEL_ADL_GT1_3, PCI_DID_INTEL_ADL_GT1_4, PCI_DID_INTEL_ADL_GT1_5, PCI_DID_INTEL_ADL_GT1_6, PCI_DID_INTEL_ADL_GT1_7, PCI_DID_INTEL_ADL_GT1_8, PCI_DID_INTEL_ADL_GT1_9, PCI_DID_INTEL_ADL_P_GT2, PCI_DID_INTEL_ADL_P_GT2_1, PCI_DID_INTEL_ADL_P_GT2_2, PCI_DID_INTEL_ADL_P_GT2_3, PCI_DID_INTEL_ADL_P_GT2_4, PCI_DID_INTEL_ADL_P_GT2_5, PCI_DID_INTEL_ADL_P_GT2_6, PCI_DID_INTEL_ADL_P_GT2_7, PCI_DID_INTEL_ADL_P_GT2_8, PCI_DID_INTEL_ADL_P_GT2_9, PCI_DID_INTEL_ADL_S_GT1, PCI_DID_INTEL_ADL_S_GT1_1, PCI_DID_INTEL_ADL_S_GT2, PCI_DID_INTEL_ADL_S_GT2_1, PCI_DID_INTEL_ADL_S_GT2_2, PCI_DID_INTEL_ADL_M_GT1, PCI_DID_INTEL_ADL_M_GT2, PCI_DID_INTEL_ADL_M_GT3, PCI_DID_INTEL_ADL_N_GT1, PCI_DID_INTEL_ADL_N_GT2, PCI_DID_INTEL_ADL_N_GT3, PCI_DID_INTEL_RPL_S_GT0, PCI_DID_INTEL_RPL_S_GT1_1, PCI_DID_INTEL_RPL_S_GT1_2, PCI_DID_INTEL_RPL_S_GT1_3, PCI_DID_INTEL_RPL_HX_GT1, PCI_DID_INTEL_RPL_HX_GT2, PCI_DID_INTEL_RPL_HX_GT3, PCI_DID_INTEL_RPL_HX_GT4, PCI_DID_INTEL_TWL_GT1_1, PCI_DID_INTEL_TWL_GT1_2, 0, }; static const struct pci_driver graphics_driver __pci_driver = { .ops = &graphics_ops, .vendor = PCI_VID_INTEL, .devices = pci_device_ids, };