diff options
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 23 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h | 2 |
3 files changed, 15 insertions, 19 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c index 5fbdd17a864b..b526bab5b27a 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c @@ -218,21 +218,18 @@ void intel_uc_fw_fetch(struct intel_uc_fw *uc_fw, struct drm_i915_private *i915) 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)) { + /* Check integrity of size values inside CSS header */ + size = (css->header_size_dw - css->key_size_dw - css->modulus_size_dw - + css->exponent_size_dw) * sizeof(u32); + if (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; + /* uCode size must calculated from other sizes */ + uc_fw->ucode_offset = sizeof(struct uc_css_header); uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32); /* now RSA */ @@ -246,7 +243,7 @@ void intel_uc_fw_fetch(struct intel_uc_fw *uc_fw, struct drm_i915_private *i915) 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; + size = sizeof(struct uc_css_header) + 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); @@ -371,7 +368,7 @@ static int uc_fw_xfer(struct intel_uc_fw *uc_fw, struct intel_gt *gt, intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); /* Set the source address for the uCode */ - offset = uc_fw_ggtt_offset(uc_fw, gt->ggtt) + uc_fw->header_offset; + offset = uc_fw_ggtt_offset(uc_fw, gt->ggtt); GEM_BUG_ON(upper_32_bits(offset) & 0xFFFF0000); intel_uncore_write_fw(uncore, DMA_ADDR_0_LOW, lower_32_bits(offset)); intel_uncore_write_fw(uncore, DMA_ADDR_0_HIGH, upper_32_bits(offset)); @@ -385,7 +382,7 @@ static int uc_fw_xfer(struct intel_uc_fw *uc_fw, struct intel_gt *gt, * via DMA, excluding any other components */ intel_uncore_write_fw(uncore, DMA_COPY_SIZE, - uc_fw->header_size + uc_fw->ucode_size); + sizeof(struct uc_css_header) + uc_fw->ucode_size); /* Start the DMA */ intel_uncore_write_fw(uncore, DMA_CTRL, @@ -539,8 +536,6 @@ void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p) 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", diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h index eddbb237fabe..a8048f91f0da 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h @@ -26,6 +26,7 @@ #define _INTEL_UC_FW_H_ #include <linux/types.h> +#include "intel_uc_fw_abi.h" #include "i915_gem.h" struct drm_printer; @@ -57,10 +58,11 @@ enum intel_uc_fw_type { * of fetching, caching, and loading the firmware image into the uC. */ struct intel_uc_fw { + enum intel_uc_fw_type type; + enum intel_uc_fw_status status; const char *path; size_t size; struct drm_i915_gem_object *obj; - enum intel_uc_fw_status status; /* * The firmware build process will generate a version header file with major and @@ -72,9 +74,6 @@ struct intel_uc_fw { u16 major_ver_found; u16 minor_ver_found; - enum intel_uc_fw_type type; - u32 header_size; - u32 header_offset; u32 rsa_size; u32 rsa_offset; u32 ucode_size; @@ -163,7 +162,7 @@ static inline u32 intel_uc_fw_get_upload_size(struct intel_uc_fw *uc_fw) if (!intel_uc_fw_is_available(uc_fw)) return 0; - return uc_fw->header_size + uc_fw->ucode_size; + return sizeof(struct uc_css_header) + uc_fw->ucode_size; } void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw, diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h index 545e86c52a9e..ae58e8a8c53b 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h @@ -7,6 +7,7 @@ #define _INTEL_UC_FW_ABI_H #include <linux/types.h> +#include <linux/build_bug.h> /** * DOC: Firmware Layout @@ -76,5 +77,6 @@ struct uc_css_header { u32 reserved[14]; u32 header_info; } __packed; +static_assert(sizeof(struct uc_css_header) == 128); #endif /* _INTEL_UC_FW_ABI_H */ |