diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uc_fw.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_uc_fw.c | 357 |
1 files changed, 0 insertions, 357 deletions
diff --git a/drivers/gpu/drm/i915/intel_uc_fw.c b/drivers/gpu/drm/i915/intel_uc_fw.c deleted file mode 100644 index f342ddd47df8..000000000000 --- a/drivers/gpu/drm/i915/intel_uc_fw.c +++ /dev/null @@ -1,357 +0,0 @@ -/* - * Copyright © 2016-2017 Intel Corporation - * - * 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 (including the next - * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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. - * - */ - -#include <linux/bitfield.h> -#include <linux/firmware.h> -#include <drm/drm_print.h> - -#include "intel_uc_fw.h" -#include "i915_drv.h" - -/** - * intel_uc_fw_fetch - fetch uC firmware - * - * @dev_priv: device private - * @uc_fw: uC firmware - * - * Fetch uC firmware into GEM obj. - */ -void intel_uc_fw_fetch(struct drm_i915_private *dev_priv, - struct intel_uc_fw *uc_fw) -{ - struct pci_dev *pdev = dev_priv->drm.pdev; - struct drm_i915_gem_object *obj; - const struct firmware *fw = NULL; - struct uc_css_header *css; - size_t size; - int err; - - if (!uc_fw->path) { - dev_info(dev_priv->drm.dev, - "%s: No firmware was defined for %s!\n", - intel_uc_fw_type_repr(uc_fw->type), - intel_platform_name(INTEL_INFO(dev_priv)->platform)); - return; - } - - DRM_DEBUG_DRIVER("%s fw fetch %s\n", - intel_uc_fw_type_repr(uc_fw->type), uc_fw->path); - - uc_fw->fetch_status = INTEL_UC_FIRMWARE_PENDING; - DRM_DEBUG_DRIVER("%s fw fetch %s\n", - intel_uc_fw_type_repr(uc_fw->type), - intel_uc_fw_status_repr(uc_fw->fetch_status)); - - err = request_firmware(&fw, uc_fw->path, &pdev->dev); - if (err) { - DRM_DEBUG_DRIVER("%s fw request_firmware err=%d\n", - intel_uc_fw_type_repr(uc_fw->type), err); - goto fail; - } - - DRM_DEBUG_DRIVER("%s fw size %zu ptr %p\n", - intel_uc_fw_type_repr(uc_fw->type), fw->size, fw); - - /* Check the size of the blob before examining buffer contents */ - if (fw->size < sizeof(struct uc_css_header)) { - DRM_WARN("%s: Unexpected firmware size (%zu, min %zu)\n", - intel_uc_fw_type_repr(uc_fw->type), - fw->size, sizeof(struct uc_css_header)); - err = -ENODATA; - goto fail; - } - - css = (struct uc_css_header *)fw->data; - - /* Firmware bits always start from header */ - uc_fw->header_offset = 0; - uc_fw->header_size = (css->header_size_dw - css->modulus_size_dw - - css->key_size_dw - css->exponent_size_dw) * - sizeof(u32); - - if (uc_fw->header_size != sizeof(struct uc_css_header)) { - DRM_WARN("%s: Mismatched firmware header definition\n", - intel_uc_fw_type_repr(uc_fw->type)); - err = -ENOEXEC; - goto fail; - } - - /* then, uCode */ - uc_fw->ucode_offset = uc_fw->header_offset + uc_fw->header_size; - uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32); - - /* now RSA */ - if (css->key_size_dw != UOS_RSA_SCRATCH_COUNT) { - DRM_WARN("%s: Mismatched firmware RSA key size (%u)\n", - intel_uc_fw_type_repr(uc_fw->type), css->key_size_dw); - err = -ENOEXEC; - goto fail; - } - uc_fw->rsa_offset = uc_fw->ucode_offset + uc_fw->ucode_size; - uc_fw->rsa_size = css->key_size_dw * sizeof(u32); - - /* At least, it should have header, uCode and RSA. Size of all three. */ - size = uc_fw->header_size + uc_fw->ucode_size + uc_fw->rsa_size; - if (fw->size < size) { - DRM_WARN("%s: Truncated firmware (%zu, expected %zu)\n", - intel_uc_fw_type_repr(uc_fw->type), fw->size, size); - err = -ENOEXEC; - goto fail; - } - - /* Get version numbers from the CSS header */ - switch (uc_fw->type) { - case INTEL_UC_FW_TYPE_GUC: - uc_fw->major_ver_found = FIELD_GET(CSS_SW_VERSION_GUC_MAJOR, - css->sw_version); - uc_fw->minor_ver_found = FIELD_GET(CSS_SW_VERSION_GUC_MINOR, - css->sw_version); - break; - - case INTEL_UC_FW_TYPE_HUC: - uc_fw->major_ver_found = FIELD_GET(CSS_SW_VERSION_HUC_MAJOR, - css->sw_version); - uc_fw->minor_ver_found = FIELD_GET(CSS_SW_VERSION_HUC_MINOR, - css->sw_version); - break; - - default: - MISSING_CASE(uc_fw->type); - break; - } - - DRM_DEBUG_DRIVER("%s fw version %u.%u (wanted %u.%u)\n", - intel_uc_fw_type_repr(uc_fw->type), - uc_fw->major_ver_found, uc_fw->minor_ver_found, - uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted); - - if (uc_fw->major_ver_wanted == 0 && uc_fw->minor_ver_wanted == 0) { - DRM_NOTE("%s: Skipping firmware version check\n", - intel_uc_fw_type_repr(uc_fw->type)); - } else if (uc_fw->major_ver_found != uc_fw->major_ver_wanted || - uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) { - DRM_NOTE("%s: Wrong firmware version (%u.%u, required %u.%u)\n", - intel_uc_fw_type_repr(uc_fw->type), - uc_fw->major_ver_found, uc_fw->minor_ver_found, - uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted); - err = -ENOEXEC; - goto fail; - } - - obj = i915_gem_object_create_shmem_from_data(dev_priv, - fw->data, fw->size); - if (IS_ERR(obj)) { - err = PTR_ERR(obj); - DRM_DEBUG_DRIVER("%s fw object_create err=%d\n", - intel_uc_fw_type_repr(uc_fw->type), err); - goto fail; - } - - uc_fw->obj = obj; - uc_fw->size = fw->size; - uc_fw->fetch_status = INTEL_UC_FIRMWARE_SUCCESS; - DRM_DEBUG_DRIVER("%s fw fetch %s\n", - intel_uc_fw_type_repr(uc_fw->type), - intel_uc_fw_status_repr(uc_fw->fetch_status)); - - release_firmware(fw); - return; - -fail: - uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL; - DRM_DEBUG_DRIVER("%s fw fetch %s\n", - intel_uc_fw_type_repr(uc_fw->type), - intel_uc_fw_status_repr(uc_fw->fetch_status)); - - DRM_WARN("%s: Failed to fetch firmware %s (error %d)\n", - intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, err); - DRM_INFO("%s: Firmware can be downloaded from %s\n", - intel_uc_fw_type_repr(uc_fw->type), INTEL_UC_FIRMWARE_URL); - - release_firmware(fw); /* OK even if fw is NULL */ -} - -static void intel_uc_fw_ggtt_bind(struct intel_uc_fw *uc_fw) -{ - struct drm_i915_gem_object *obj = uc_fw->obj; - struct i915_ggtt *ggtt = &to_i915(obj->base.dev)->ggtt; - struct i915_vma dummy = { - .node.start = intel_uc_fw_ggtt_offset(uc_fw), - .node.size = obj->base.size, - .pages = obj->mm.pages, - .vm = &ggtt->vm, - }; - - GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj)); - GEM_BUG_ON(dummy.node.size > ggtt->uc_fw.size); - - /* uc_fw->obj cache domains were not controlled across suspend */ - drm_clflush_sg(dummy.pages); - - ggtt->vm.insert_entries(&ggtt->vm, &dummy, I915_CACHE_NONE, 0); -} - -static void intel_uc_fw_ggtt_unbind(struct intel_uc_fw *uc_fw) -{ - struct drm_i915_gem_object *obj = uc_fw->obj; - struct i915_ggtt *ggtt = &to_i915(obj->base.dev)->ggtt; - u64 start = intel_uc_fw_ggtt_offset(uc_fw); - - ggtt->vm.clear_range(&ggtt->vm, start, obj->base.size); -} - -/** - * intel_uc_fw_upload - load uC firmware using custom loader - * @uc_fw: uC firmware - * @xfer: custom uC firmware loader function - * - * Loads uC firmware using custom loader and updates internal flags. - * - * Return: 0 on success, non-zero on failure. - */ -int intel_uc_fw_upload(struct intel_uc_fw *uc_fw, - int (*xfer)(struct intel_uc_fw *uc_fw)) -{ - int err; - - DRM_DEBUG_DRIVER("%s fw load %s\n", - intel_uc_fw_type_repr(uc_fw->type), uc_fw->path); - - if (uc_fw->fetch_status != INTEL_UC_FIRMWARE_SUCCESS) - return -ENOEXEC; - - uc_fw->load_status = INTEL_UC_FIRMWARE_PENDING; - DRM_DEBUG_DRIVER("%s fw load %s\n", - intel_uc_fw_type_repr(uc_fw->type), - intel_uc_fw_status_repr(uc_fw->load_status)); - - /* Call custom loader */ - intel_uc_fw_ggtt_bind(uc_fw); - err = xfer(uc_fw); - intel_uc_fw_ggtt_unbind(uc_fw); - if (err) - goto fail; - - uc_fw->load_status = INTEL_UC_FIRMWARE_SUCCESS; - DRM_DEBUG_DRIVER("%s fw load %s\n", - intel_uc_fw_type_repr(uc_fw->type), - intel_uc_fw_status_repr(uc_fw->load_status)); - - DRM_INFO("%s: Loaded firmware %s (version %u.%u)\n", - intel_uc_fw_type_repr(uc_fw->type), - uc_fw->path, - uc_fw->major_ver_found, uc_fw->minor_ver_found); - - return 0; - -fail: - uc_fw->load_status = INTEL_UC_FIRMWARE_FAIL; - DRM_DEBUG_DRIVER("%s fw load %s\n", - intel_uc_fw_type_repr(uc_fw->type), - intel_uc_fw_status_repr(uc_fw->load_status)); - - DRM_WARN("%s: Failed to load firmware %s (error %d)\n", - intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, err); - - return err; -} - -int intel_uc_fw_init(struct intel_uc_fw *uc_fw) -{ - int err; - - if (uc_fw->fetch_status != INTEL_UC_FIRMWARE_SUCCESS) - return -ENOEXEC; - - err = i915_gem_object_pin_pages(uc_fw->obj); - if (err) - DRM_DEBUG_DRIVER("%s fw pin-pages err=%d\n", - intel_uc_fw_type_repr(uc_fw->type), err); - - return err; -} - -void intel_uc_fw_fini(struct intel_uc_fw *uc_fw) -{ - if (uc_fw->fetch_status != INTEL_UC_FIRMWARE_SUCCESS) - return; - - i915_gem_object_unpin_pages(uc_fw->obj); -} - -u32 intel_uc_fw_ggtt_offset(struct intel_uc_fw *uc_fw) -{ - struct drm_i915_private *i915 = to_i915(uc_fw->obj->base.dev); - struct i915_ggtt *ggtt = &i915->ggtt; - struct drm_mm_node *node = &ggtt->uc_fw; - - GEM_BUG_ON(!node->allocated); - GEM_BUG_ON(upper_32_bits(node->start)); - GEM_BUG_ON(upper_32_bits(node->start + node->size - 1)); - - return lower_32_bits(node->start); -} - -/** - * intel_uc_fw_cleanup_fetch - cleanup uC firmware - * - * @uc_fw: uC firmware - * - * Cleans up uC firmware by releasing the firmware GEM obj. - */ -void intel_uc_fw_cleanup_fetch(struct intel_uc_fw *uc_fw) -{ - struct drm_i915_gem_object *obj; - - obj = fetch_and_zero(&uc_fw->obj); - if (obj) - i915_gem_object_put(obj); - - uc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE; -} - -/** - * intel_uc_fw_dump - dump information about uC firmware - * @uc_fw: uC firmware - * @p: the &drm_printer - * - * Pretty printer for uC firmware. - */ -void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p) -{ - drm_printf(p, "%s firmware: %s\n", - intel_uc_fw_type_repr(uc_fw->type), uc_fw->path); - drm_printf(p, "\tstatus: fetch %s, load %s\n", - intel_uc_fw_status_repr(uc_fw->fetch_status), - intel_uc_fw_status_repr(uc_fw->load_status)); - drm_printf(p, "\tversion: wanted %u.%u, found %u.%u\n", - uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted, - uc_fw->major_ver_found, uc_fw->minor_ver_found); - drm_printf(p, "\theader: offset %u, size %u\n", - uc_fw->header_offset, uc_fw->header_size); - drm_printf(p, "\tuCode: offset %u, size %u\n", - uc_fw->ucode_offset, uc_fw->ucode_size); - drm_printf(p, "\tRSA: offset %u, size %u\n", - uc_fw->rsa_offset, uc_fw->rsa_size); -} |