// SPDX-License-Identifier: MIT /* * Copyright © 2021 Intel Corporation */ #include "xe_pci.h" #include #include #include #include #include #include #include #include #include "display/xe_display.h" #include "regs/xe_gt_regs.h" #include "xe_device.h" #include "xe_drv.h" #include "xe_gt.h" #include "xe_gt_sriov_vf.h" #include "xe_guc.h" #include "xe_macros.h" #include "xe_mmio.h" #include "xe_module.h" #include "xe_pci_sriov.h" #include "xe_pci_types.h" #include "xe_pm.h" #include "xe_sriov.h" #include "xe_step.h" #include "xe_tile.h" enum toggle_d3cold { D3COLD_DISABLE, D3COLD_ENABLE, }; struct xe_subplatform_desc { enum xe_subplatform subplatform; const char *name; const u16 *pciidlist; }; struct xe_device_desc { /* Should only ever be set for platforms without GMD_ID */ const struct xe_graphics_desc *graphics; /* Should only ever be set for platforms without GMD_ID */ const struct xe_media_desc *media; const char *platform_name; const struct xe_subplatform_desc *subplatforms; enum xe_platform platform; u8 require_force_probe:1; u8 is_dgfx:1; u8 has_display:1; u8 has_heci_gscfi:1; u8 has_heci_cscfi:1; u8 has_llc:1; u8 has_mmio_ext:1; u8 has_sriov:1; u8 skip_guc_pc:1; u8 skip_mtcfg:1; u8 skip_pcode:1; }; __diag_push(); __diag_ignore_all("-Woverride-init", "Allow field overrides in table"); #define PLATFORM(x) \ .platform = XE_##x, \ .platform_name = #x #define NOP(x) x static const struct xe_graphics_desc graphics_xelp = { .name = "Xe_LP", .ver = 12, .rel = 0, .hw_engine_mask = BIT(XE_HW_ENGINE_RCS0) | BIT(XE_HW_ENGINE_BCS0), .dma_mask_size = 39, .va_bits = 48, .vm_max_level = 3, }; static const struct xe_graphics_desc graphics_xelpp = { .name = "Xe_LP+", .ver = 12, .rel = 10, .hw_engine_mask = BIT(XE_HW_ENGINE_RCS0) | BIT(XE_HW_ENGINE_BCS0), .dma_mask_size = 39, .va_bits = 48, .vm_max_level = 3, }; #define XE_HP_FEATURES \ .has_range_tlb_invalidation = true, \ .dma_mask_size = 46, \ .va_bits = 48, \ .vm_max_level = 3 static const struct xe_graphics_desc graphics_xehpg = { .name = "Xe_HPG", .ver = 12, .rel = 55, .hw_engine_mask = BIT(XE_HW_ENGINE_RCS0) | BIT(XE_HW_ENGINE_BCS0) | BIT(XE_HW_ENGINE_CCS0) | BIT(XE_HW_ENGINE_CCS1) | BIT(XE_HW_ENGINE_CCS2) | BIT(XE_HW_ENGINE_CCS3), XE_HP_FEATURES, .vram_flags = XE_VRAM_FLAGS_NEED64K, .has_flat_ccs = 1, }; static const struct xe_graphics_desc graphics_xehpc = { .name = "Xe_HPC", .ver = 12, .rel = 60, .hw_engine_mask = BIT(XE_HW_ENGINE_BCS0) | BIT(XE_HW_ENGINE_BCS1) | BIT(XE_HW_ENGINE_BCS2) | BIT(XE_HW_ENGINE_BCS3) | BIT(XE_HW_ENGINE_BCS4) | BIT(XE_HW_ENGINE_BCS5) | BIT(XE_HW_ENGINE_BCS6) | BIT(XE_HW_ENGINE_BCS7) | BIT(XE_HW_ENGINE_BCS8) | BIT(XE_HW_ENGINE_CCS0) | BIT(XE_HW_ENGINE_CCS1) | BIT(XE_HW_ENGINE_CCS2) | BIT(XE_HW_ENGINE_CCS3), XE_HP_FEATURES, .dma_mask_size = 52, .max_remote_tiles = 1, .va_bits = 57, .vm_max_level = 4, .vram_flags = XE_VRAM_FLAGS_NEED64K, .has_asid = 1, .has_atomic_enable_pte_bit = 1, .has_usm = 1, }; static const struct xe_graphics_desc graphics_xelpg = { .name = "Xe_LPG", .hw_engine_mask = BIT(XE_HW_ENGINE_RCS0) | BIT(XE_HW_ENGINE_BCS0) | BIT(XE_HW_ENGINE_CCS0), XE_HP_FEATURES, }; #define XE2_GFX_FEATURES \ .dma_mask_size = 46, \ .has_asid = 1, \ .has_atomic_enable_pte_bit = 1, \ .has_flat_ccs = 1, \ .has_indirect_ring_state = 1, \ .has_range_tlb_invalidation = 1, \ .has_usm = 1, \ .va_bits = 48, \ .vm_max_level = 4, \ .hw_engine_mask = \ BIT(XE_HW_ENGINE_RCS0) | \ BIT(XE_HW_ENGINE_BCS8) | BIT(XE_HW_ENGINE_BCS0) | \ GENMASK(XE_HW_ENGINE_CCS3, XE_HW_ENGINE_CCS0) static const struct xe_graphics_desc graphics_xe2 = { .name = "Xe2_LPG / Xe2_HPG / Xe3_LPG", XE2_GFX_FEATURES, }; static const struct xe_media_desc media_xem = { .name = "Xe_M", .ver = 12, .rel = 0, .hw_engine_mask = GENMASK(XE_HW_ENGINE_VCS7, XE_HW_ENGINE_VCS0) | GENMASK(XE_HW_ENGINE_VECS3, XE_HW_ENGINE_VECS0), }; static const struct xe_media_desc media_xehpm = { .name = "Xe_HPM", .ver = 12, .rel = 55, .hw_engine_mask = GENMASK(XE_HW_ENGINE_VCS7, XE_HW_ENGINE_VCS0) | GENMASK(XE_HW_ENGINE_VECS3, XE_HW_ENGINE_VECS0), }; static const struct xe_media_desc media_xelpmp = { .name = "Xe_LPM+", .hw_engine_mask = GENMASK(XE_HW_ENGINE_VCS7, XE_HW_ENGINE_VCS0) | GENMASK(XE_HW_ENGINE_VECS3, XE_HW_ENGINE_VECS0) | BIT(XE_HW_ENGINE_GSCCS0) }; static const struct xe_media_desc media_xe2 = { .name = "Xe2_LPM / Xe2_HPM / Xe3_LPM", .hw_engine_mask = GENMASK(XE_HW_ENGINE_VCS7, XE_HW_ENGINE_VCS0) | GENMASK(XE_HW_ENGINE_VECS3, XE_HW_ENGINE_VECS0) | BIT(XE_HW_ENGINE_GSCCS0) }; static const struct xe_device_desc tgl_desc = { .graphics = &graphics_xelp, .media = &media_xem, PLATFORM(TIGERLAKE), .has_display = true, .has_llc = true, .require_force_probe = true, }; static const struct xe_device_desc rkl_desc = { .graphics = &graphics_xelp, .media = &media_xem, PLATFORM(ROCKETLAKE), .has_display = true, .has_llc = true, .require_force_probe = true, }; static const u16 adls_rpls_ids[] = { INTEL_RPLS_IDS(NOP), 0 }; static const struct xe_device_desc adl_s_desc = { .graphics = &graphics_xelp, .media = &media_xem, PLATFORM(ALDERLAKE_S), .has_display = true, .has_llc = true, .require_force_probe = true, .subplatforms = (const struct xe_subplatform_desc[]) { { XE_SUBPLATFORM_ALDERLAKE_S_RPLS, "RPLS", adls_rpls_ids }, {}, }, }; static const u16 adlp_rplu_ids[] = { INTEL_RPLU_IDS(NOP), 0 }; static const struct xe_device_desc adl_p_desc = { .graphics = &graphics_xelp, .media = &media_xem, PLATFORM(ALDERLAKE_P), .has_display = true, .has_llc = true, .require_force_probe = true, .subplatforms = (const struct xe_subplatform_desc[]) { { XE_SUBPLATFORM_ALDERLAKE_P_RPLU, "RPLU", adlp_rplu_ids }, {}, }, }; static const struct xe_device_desc adl_n_desc = { .graphics = &graphics_xelp, .media = &media_xem, PLATFORM(ALDERLAKE_N), .has_display = true, .has_llc = true, .require_force_probe = true, }; #define DGFX_FEATURES \ .is_dgfx = 1 static const struct xe_device_desc dg1_desc = { .graphics = &graphics_xelpp, .media = &media_xem, DGFX_FEATURES, PLATFORM(DG1), .has_display = true, .has_heci_gscfi = 1, .require_force_probe = true, }; static const u16 dg2_g10_ids[] = { INTEL_DG2_G10_IDS(NOP), INTEL_ATS_M150_IDS(NOP), 0 }; static const u16 dg2_g11_ids[] = { INTEL_DG2_G11_IDS(NOP), INTEL_ATS_M75_IDS(NOP), 0 }; static const u16 dg2_g12_ids[] = { INTEL_DG2_G12_IDS(NOP), 0 }; #define DG2_FEATURES \ DGFX_FEATURES, \ PLATFORM(DG2), \ .has_heci_gscfi = 1, \ .subplatforms = (const struct xe_subplatform_desc[]) { \ { XE_SUBPLATFORM_DG2_G10, "G10", dg2_g10_ids }, \ { XE_SUBPLATFORM_DG2_G11, "G11", dg2_g11_ids }, \ { XE_SUBPLATFORM_DG2_G12, "G12", dg2_g12_ids }, \ { } \ } static const struct xe_device_desc ats_m_desc = { .graphics = &graphics_xehpg, .media = &media_xehpm, .require_force_probe = true, DG2_FEATURES, .has_display = false, }; static const struct xe_device_desc dg2_desc = { .graphics = &graphics_xehpg, .media = &media_xehpm, .require_force_probe = true, DG2_FEATURES, .has_display = true, }; static const __maybe_unused struct xe_device_desc pvc_desc = { .graphics = &graphics_xehpc, DGFX_FEATURES, PLATFORM(PVC), .has_display = false, .has_heci_gscfi = 1, .require_force_probe = true, }; static const struct xe_device_desc mtl_desc = { /* .graphics and .media determined via GMD_ID */ .require_force_probe = true, PLATFORM(METEORLAKE), .has_display = true, }; static const struct xe_device_desc lnl_desc = { PLATFORM(LUNARLAKE), .has_display = true, }; static const struct xe_device_desc bmg_desc = { DGFX_FEATURES, PLATFORM(BATTLEMAGE), .has_display = true, .has_heci_cscfi = 1, }; static const struct xe_device_desc ptl_desc = { PLATFORM(PANTHERLAKE), .has_display = true, .require_force_probe = true, }; #undef PLATFORM __diag_pop(); /* Map of GMD_ID values to graphics IP */ static const struct gmdid_map graphics_ip_map[] = { { 1270, &graphics_xelpg }, { 1271, &graphics_xelpg }, { 1274, &graphics_xelpg }, /* Xe_LPG+ */ { 2001, &graphics_xe2 }, { 2004, &graphics_xe2 }, { 3000, &graphics_xe2 }, { 3001, &graphics_xe2 }, }; /* Map of GMD_ID values to media IP */ static const struct gmdid_map media_ip_map[] = { { 1300, &media_xelpmp }, { 1301, &media_xe2 }, { 2000, &media_xe2 }, { 3000, &media_xe2 }, }; /* * Make sure any device matches here are from most specific to most * general. For example, since the Quanta match is based on the subsystem * and subvendor IDs, we need it to come before the more general IVB * PCI ID matches, otherwise we'll use the wrong info struct above. */ static const struct pci_device_id pciidlist[] = { INTEL_TGL_IDS(INTEL_VGA_DEVICE, &tgl_desc), INTEL_RKL_IDS(INTEL_VGA_DEVICE, &rkl_desc), INTEL_ADLS_IDS(INTEL_VGA_DEVICE, &adl_s_desc), INTEL_ADLP_IDS(INTEL_VGA_DEVICE, &adl_p_desc), INTEL_ADLN_IDS(INTEL_VGA_DEVICE, &adl_n_desc), INTEL_RPLU_IDS(INTEL_VGA_DEVICE, &adl_p_desc), INTEL_RPLP_IDS(INTEL_VGA_DEVICE, &adl_p_desc), INTEL_RPLS_IDS(INTEL_VGA_DEVICE, &adl_s_desc), INTEL_DG1_IDS(INTEL_VGA_DEVICE, &dg1_desc), INTEL_ATS_M_IDS(INTEL_VGA_DEVICE, &ats_m_desc), INTEL_ARL_IDS(INTEL_VGA_DEVICE, &mtl_desc), INTEL_DG2_IDS(INTEL_VGA_DEVICE, &dg2_desc), INTEL_MTL_IDS(INTEL_VGA_DEVICE, &mtl_desc), INTEL_LNL_IDS(INTEL_VGA_DEVICE, &lnl_desc), INTEL_BMG_IDS(INTEL_VGA_DEVICE, &bmg_desc), INTEL_PTL_IDS(INTEL_VGA_DEVICE, &ptl_desc), { } }; MODULE_DEVICE_TABLE(pci, pciidlist); /* is device_id present in comma separated list of ids */ static bool device_id_in_list(u16 device_id, const char *devices, bool negative) { char *s, *p, *tok; bool ret; if (!devices || !*devices) return false; /* match everything */ if (negative && strcmp(devices, "!*") == 0) return true; if (!negative && strcmp(devices, "*") == 0) return true; s = kstrdup(devices, GFP_KERNEL); if (!s) return false; for (p = s, ret = false; (tok = strsep(&p, ",")) != NULL; ) { u16 val; if (negative && tok[0] == '!') tok++; else if ((negative && tok[0] != '!') || (!negative && tok[0] == '!')) continue; if (kstrtou16(tok, 16, &val) == 0 && val == device_id) { ret = true; break; } } kfree(s); return ret; } static bool id_forced(u16 device_id) { return device_id_in_list(device_id, xe_modparam.force_probe, false); } static bool id_blocked(u16 device_id) { return device_id_in_list(device_id, xe_modparam.force_probe, true); } static const struct xe_subplatform_desc * find_subplatform(const struct xe_device *xe, const struct xe_device_desc *desc) { const struct xe_subplatform_desc *sp; const u16 *id; for (sp = desc->subplatforms; sp && sp->subplatform; sp++) for (id = sp->pciidlist; *id; id++) if (*id == xe->info.devid) return sp; return NULL; } enum xe_gmdid_type { GMDID_GRAPHICS, GMDID_MEDIA }; static void read_gmdid(struct xe_device *xe, enum xe_gmdid_type type, u32 *ver, u32 *revid) { struct xe_mmio *mmio = xe_root_tile_mmio(xe); struct xe_reg gmdid_reg = GMD_ID; u32 val; KUNIT_STATIC_STUB_REDIRECT(read_gmdid, xe, type, ver, revid); if (IS_SRIOV_VF(xe)) { struct xe_gt *gt = xe_root_mmio_gt(xe); /* * To get the value of the GMDID register, VFs must obtain it * from the GuC using MMIO communication. * * Note that at this point the xe_gt is not fully uninitialized * and only basic access to MMIO registers is possible. To use * our existing GuC communication functions we must perform at * least basic xe_gt and xe_guc initialization. * * Since to obtain the value of GMDID_MEDIA we need to use the * media GuC, temporarly tweak the gt type. */ xe_gt_assert(gt, gt->info.type == XE_GT_TYPE_UNINITIALIZED); if (type == GMDID_MEDIA) { gt->info.id = 1; gt->info.type = XE_GT_TYPE_MEDIA; } else { gt->info.id = 0; gt->info.type = XE_GT_TYPE_MAIN; } xe_guc_comm_init_early(>->uc.guc); /* Don't bother with GMDID if failed to negotiate the GuC ABI */ val = xe_gt_sriov_vf_bootstrap(gt) ? 0 : xe_gt_sriov_vf_gmdid(gt); /* * Only undo xe_gt.info here, the remaining changes made above * will be overwritten as part of the regular initialization. */ gt->info.id = 0; gt->info.type = XE_GT_TYPE_UNINITIALIZED; } else { /* * GMD_ID is a GT register, but at this point in the driver * init we haven't fully initialized the GT yet so we need to * read the register with the tile's MMIO accessor. That means * we need to apply the GSI offset manually since it won't get * automatically added as it would if we were using a GT mmio * accessor. */ if (type == GMDID_MEDIA) gmdid_reg.addr += MEDIA_GT_GSI_OFFSET; val = xe_mmio_read32(mmio, gmdid_reg); } *ver = REG_FIELD_GET(GMD_ID_ARCH_MASK, val) * 100 + REG_FIELD_GET(GMD_ID_RELEASE_MASK, val); *revid = REG_FIELD_GET(GMD_ID_REVID, val); } /* * Pre-GMD_ID platform: device descriptor already points to the appropriate * graphics descriptor. Simply forward the description and calculate the version * appropriately. "graphics" should be present in all such platforms, while * media is optional. */ static void handle_pre_gmdid(struct xe_device *xe, const struct xe_graphics_desc *graphics, const struct xe_media_desc *media) { xe->info.graphics_verx100 = graphics->ver * 100 + graphics->rel; if (media) xe->info.media_verx100 = media->ver * 100 + media->rel; } /* * GMD_ID platform: read IP version from hardware and select graphics descriptor * based on the result. */ static void handle_gmdid(struct xe_device *xe, const struct xe_graphics_desc **graphics, const struct xe_media_desc **media, u32 *graphics_revid, u32 *media_revid) { u32 ver; read_gmdid(xe, GMDID_GRAPHICS, &ver, graphics_revid); for (int i = 0; i < ARRAY_SIZE(graphics_ip_map); i++) { if (ver == graphics_ip_map[i].ver) { xe->info.graphics_verx100 = ver; *graphics = graphics_ip_map[i].ip; break; } } if (!xe->info.graphics_verx100) { drm_err(&xe->drm, "Hardware reports unknown graphics version %u.%02u\n", ver / 100, ver % 100); } read_gmdid(xe, GMDID_MEDIA, &ver, media_revid); /* Media may legitimately be fused off / not present */ if (ver == 0) return; for (int i = 0; i < ARRAY_SIZE(media_ip_map); i++) { if (ver == media_ip_map[i].ver) { xe->info.media_verx100 = ver; *media = media_ip_map[i].ip; break; } } if (!xe->info.media_verx100) { drm_err(&xe->drm, "Hardware reports unknown media version %u.%02u\n", ver / 100, ver % 100); } } /* * Initialize device info content that only depends on static driver_data * passed to the driver at probe time from PCI ID table. */ static int xe_info_init_early(struct xe_device *xe, const struct xe_device_desc *desc, const struct xe_subplatform_desc *subplatform_desc) { int err; xe->info.platform_name = desc->platform_name; xe->info.platform = desc->platform; xe->info.subplatform = subplatform_desc ? subplatform_desc->subplatform : XE_SUBPLATFORM_NONE; xe->info.is_dgfx = desc->is_dgfx; xe->info.has_heci_gscfi = desc->has_heci_gscfi; xe->info.has_heci_cscfi = desc->has_heci_cscfi; xe->info.has_llc = desc->has_llc; xe->info.has_mmio_ext = desc->has_mmio_ext; xe->info.has_sriov = desc->has_sriov; xe->info.skip_guc_pc = desc->skip_guc_pc; xe->info.skip_mtcfg = desc->skip_mtcfg; xe->info.skip_pcode = desc->skip_pcode; xe->info.probe_display = IS_ENABLED(CONFIG_DRM_XE_DISPLAY) && xe_modparam.probe_display && desc->has_display; err = xe_tile_init_early(xe_device_get_root_tile(xe), xe, 0); if (err) return err; return 0; } /* * Initialize device info content that does require knowledge about * graphics / media IP version. * Make sure that GT / tile structures allocated by the driver match the data * present in device info. */ static int xe_info_init(struct xe_device *xe, const struct xe_graphics_desc *graphics_desc, const struct xe_media_desc *media_desc) { u32 graphics_gmdid_revid = 0, media_gmdid_revid = 0; struct xe_tile *tile; struct xe_gt *gt; u8 id; /* * If this platform supports GMD_ID, we'll detect the proper IP * descriptor to use from hardware registers. desc->graphics will only * ever be set at this point for platforms before GMD_ID. In that case * the IP descriptions and versions are simply derived from that. */ if (graphics_desc) { handle_pre_gmdid(xe, graphics_desc, media_desc); xe->info.step = xe_step_pre_gmdid_get(xe); } else { xe_assert(xe, !media_desc); handle_gmdid(xe, &graphics_desc, &media_desc, &graphics_gmdid_revid, &media_gmdid_revid); xe->info.step = xe_step_gmdid_get(xe, graphics_gmdid_revid, media_gmdid_revid); } /* * If we couldn't detect the graphics IP, that's considered a fatal * error and we should abort driver load. Failing to detect media * IP is non-fatal; we'll just proceed without enabling media support. */ if (!graphics_desc) return -ENODEV; xe->info.graphics_name = graphics_desc->name; xe->info.media_name = media_desc ? media_desc->name : "none"; xe->info.tile_mmio_ext_size = graphics_desc->tile_mmio_ext_size; xe->info.dma_mask_size = graphics_desc->dma_mask_size; xe->info.vram_flags = graphics_desc->vram_flags; xe->info.va_bits = graphics_desc->va_bits; xe->info.vm_max_level = graphics_desc->vm_max_level; xe->info.has_asid = graphics_desc->has_asid; xe->info.has_atomic_enable_pte_bit = graphics_desc->has_atomic_enable_pte_bit; if (xe->info.platform != XE_PVC) xe->info.has_device_atomics_on_smem = 1; /* Runtime detection may change this later */ xe->info.has_flat_ccs = graphics_desc->has_flat_ccs; xe->info.has_range_tlb_invalidation = graphics_desc->has_range_tlb_invalidation; xe->info.has_usm = graphics_desc->has_usm; /* * All platforms have at least one primary GT. Any platform with media * version 13 or higher has an additional dedicated media GT. And * depending on the graphics IP there may be additional "remote tiles." * All of these together determine the overall GT count. * * FIXME: 'tile_count' here is misnamed since the rest of the driver * treats it as the number of GTs rather than just the number of tiles. */ xe->info.tile_count = 1 + graphics_desc->max_remote_tiles; for_each_remote_tile(tile, xe, id) { int err; err = xe_tile_init_early(tile, xe, id); if (err) return err; } for_each_tile(tile, xe, id) { gt = tile->primary_gt; gt->info.id = xe->info.gt_count++; gt->info.type = XE_GT_TYPE_MAIN; gt->info.has_indirect_ring_state = graphics_desc->has_indirect_ring_state; gt->info.engine_mask = graphics_desc->hw_engine_mask; if (MEDIA_VER(xe) < 13 && media_desc) gt->info.engine_mask |= media_desc->hw_engine_mask; if (MEDIA_VER(xe) < 13 || !media_desc) continue; /* * Allocate and setup media GT for platforms with standalone * media. */ tile->media_gt = xe_gt_alloc(tile); if (IS_ERR(tile->media_gt)) return PTR_ERR(tile->media_gt); gt = tile->media_gt; gt->info.type = XE_GT_TYPE_MEDIA; gt->info.has_indirect_ring_state = media_desc->has_indirect_ring_state; gt->info.engine_mask = media_desc->hw_engine_mask; /* * FIXME: At the moment multi-tile and standalone media are * mutually exclusive on current platforms. We'll need to * come up with a better way to number GTs if we ever wind * up with platforms that support both together. */ drm_WARN_ON(&xe->drm, id != 0); gt->info.id = xe->info.gt_count++; } return 0; } static void xe_pci_remove(struct pci_dev *pdev) { struct xe_device *xe; xe = pdev_to_xe_device(pdev); if (!xe) /* driver load aborted, nothing to cleanup */ return; if (IS_SRIOV_PF(xe)) xe_pci_sriov_configure(pdev, 0); xe_device_remove(xe); xe_pm_runtime_fini(xe); pci_set_drvdata(pdev, NULL); } /* * Probe the PCI device, initialize various parts of the driver. * * Fault injection is used to test the error paths of some initialization * functions called either directly from xe_pci_probe() or indirectly for * example through xe_device_probe(). Those functions use the kernel fault * injection capabilities infrastructure, see * Documentation/fault-injection/fault-injection.rst for details. The macro * ALLOW_ERROR_INJECTION() is used to conditionally skip function execution * at runtime and use a provided return value. The first requirement for * error injectable functions is proper handling of the error code by the * caller for recovery, which is always the case here. The second * requirement is that no state is changed before the first error return. * It is not strictly fullfilled for all initialization functions using the * ALLOW_ERROR_INJECTION() macro but this is acceptable because for those * error cases at probe time, the error code is simply propagated up by the * caller. Therefore there is no consequence on those specific callers when * function error injection skips the whole function. */ static int xe_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { const struct xe_device_desc *desc = (const void *)ent->driver_data; const struct xe_subplatform_desc *subplatform_desc; struct xe_device *xe; int err; if (desc->require_force_probe && !id_forced(pdev->device)) { dev_info(&pdev->dev, "Your graphics device %04x is not officially supported\n" "by xe driver in this kernel version. To force Xe probe,\n" "use xe.force_probe='%04x' and i915.force_probe='!%04x'\n" "module parameters or CONFIG_DRM_XE_FORCE_PROBE='%04x' and\n" "CONFIG_DRM_I915_FORCE_PROBE='!%04x' configuration options.\n", pdev->device, pdev->device, pdev->device, pdev->device, pdev->device); return -ENODEV; } if (id_blocked(pdev->device)) { dev_info(&pdev->dev, "Probe blocked for device [%04x:%04x].\n", pdev->vendor, pdev->device); return -ENODEV; } if (xe_display_driver_probe_defer(pdev)) return -EPROBE_DEFER; err = pcim_enable_device(pdev); if (err) return err; xe = xe_device_create(pdev, ent); if (IS_ERR(xe)) return PTR_ERR(xe); pci_set_drvdata(pdev, &xe->drm); xe_pm_assert_unbounded_bridge(xe); subplatform_desc = find_subplatform(xe, desc); pci_set_master(pdev); err = xe_info_init_early(xe, desc, subplatform_desc); if (err) return err; err = xe_device_probe_early(xe); if (err) return err; err = xe_info_init(xe, desc->graphics, desc->media); if (err) return err; err = xe_display_probe(xe); if (err) return err; drm_dbg(&xe->drm, "%s %s %04x:%04x dgfx:%d gfx:%s (%d.%02d) media:%s (%d.%02d) display:%s dma_m_s:%d tc:%d gscfi:%d cscfi:%d", desc->platform_name, subplatform_desc ? subplatform_desc->name : "", xe->info.devid, xe->info.revid, xe->info.is_dgfx, xe->info.graphics_name, xe->info.graphics_verx100 / 100, xe->info.graphics_verx100 % 100, xe->info.media_name, xe->info.media_verx100 / 100, xe->info.media_verx100 % 100, str_yes_no(xe->info.probe_display), xe->info.dma_mask_size, xe->info.tile_count, xe->info.has_heci_gscfi, xe->info.has_heci_cscfi); drm_dbg(&xe->drm, "Stepping = (G:%s, M:%s, B:%s)\n", xe_step_name(xe->info.step.graphics), xe_step_name(xe->info.step.media), xe_step_name(xe->info.step.basedie)); drm_dbg(&xe->drm, "SR-IOV support: %s (mode: %s)\n", str_yes_no(xe_device_has_sriov(xe)), xe_sriov_mode_to_string(xe_device_sriov_mode(xe))); err = xe_pm_init_early(xe); if (err) return err; err = xe_device_probe(xe); if (err) return err; err = xe_pm_init(xe); if (err) goto err_driver_cleanup; drm_dbg(&xe->drm, "d3cold: capable=%s\n", str_yes_no(xe->d3cold.capable)); return 0; err_driver_cleanup: xe_pci_remove(pdev); return err; } static void xe_pci_shutdown(struct pci_dev *pdev) { xe_device_shutdown(pdev_to_xe_device(pdev)); } #ifdef CONFIG_PM_SLEEP static void d3cold_toggle(struct pci_dev *pdev, enum toggle_d3cold toggle) { struct xe_device *xe = pdev_to_xe_device(pdev); struct pci_dev *root_pdev; if (!xe->d3cold.capable) return; root_pdev = pcie_find_root_port(pdev); if (!root_pdev) return; switch (toggle) { case D3COLD_DISABLE: pci_d3cold_disable(root_pdev); break; case D3COLD_ENABLE: pci_d3cold_enable(root_pdev); break; } } static int xe_pci_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); int err; err = xe_pm_suspend(pdev_to_xe_device(pdev)); if (err) return err; /* * Enabling D3Cold is needed for S2Idle/S0ix. * It is save to allow here since xe_pm_suspend has evicted * the local memory and the direct complete optimization is disabled. */ d3cold_toggle(pdev, D3COLD_ENABLE); pci_save_state(pdev); pci_disable_device(pdev); return 0; } static int xe_pci_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); int err; /* Give back the D3Cold decision to the runtime P M*/ d3cold_toggle(pdev, D3COLD_DISABLE); err = pci_set_power_state(pdev, PCI_D0); if (err) return err; pci_restore_state(pdev); err = pci_enable_device(pdev); if (err) return err; pci_set_master(pdev); err = xe_pm_resume(pdev_to_xe_device(pdev)); if (err) return err; return 0; } static int xe_pci_runtime_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct xe_device *xe = pdev_to_xe_device(pdev); int err; err = xe_pm_runtime_suspend(xe); if (err) return err; pci_save_state(pdev); if (xe->d3cold.allowed) { d3cold_toggle(pdev, D3COLD_ENABLE); pci_disable_device(pdev); pci_ignore_hotplug(pdev); pci_set_power_state(pdev, PCI_D3cold); } else { d3cold_toggle(pdev, D3COLD_DISABLE); pci_set_power_state(pdev, PCI_D3hot); } return 0; } static int xe_pci_runtime_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct xe_device *xe = pdev_to_xe_device(pdev); int err; err = pci_set_power_state(pdev, PCI_D0); if (err) return err; pci_restore_state(pdev); if (xe->d3cold.allowed) { err = pci_enable_device(pdev); if (err) return err; pci_set_master(pdev); } return xe_pm_runtime_resume(xe); } static int xe_pci_runtime_idle(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct xe_device *xe = pdev_to_xe_device(pdev); xe_pm_d3cold_allowed_toggle(xe); return 0; } static const struct dev_pm_ops xe_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(xe_pci_suspend, xe_pci_resume) SET_RUNTIME_PM_OPS(xe_pci_runtime_suspend, xe_pci_runtime_resume, xe_pci_runtime_idle) }; #endif static struct pci_driver xe_pci_driver = { .name = DRIVER_NAME, .id_table = pciidlist, .probe = xe_pci_probe, .remove = xe_pci_remove, .shutdown = xe_pci_shutdown, .sriov_configure = xe_pci_sriov_configure, #ifdef CONFIG_PM_SLEEP .driver.pm = &xe_pm_ops, #endif }; int xe_register_pci_driver(void) { return pci_register_driver(&xe_pci_driver); } void xe_unregister_pci_driver(void) { pci_unregister_driver(&xe_pci_driver); } #if IS_ENABLED(CONFIG_DRM_XE_KUNIT_TEST) #include "tests/xe_pci.c" #endif