[PATCH 5/8] drm/i915/uc: Make intel_uc_fw_fetch() static

Arkadiusz Hiler
2017-02-17T13:06:14Z

intel_uc_fw_fetch() is confusingly named in the light of recent changes.

It's also in the worng place - 'guc_loader.h' - it's used for both guc
and huc, which was reflected in name, but not it's location, so let's
move it to 'intel_uc.c'.

We can make a intel_uc_fw callback out of it, to avoid leaking it
outside `intel_uc.c`

Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
---
drivers/gpu/drm/i915/intel_guc_loader.c | 137 +------------------------------
drivers/gpu/drm/i915/intel_huc.c | 2 +-
drivers/gpu/drm/i915/intel_uc.c | 141 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_uc.h | 4 +-
4 files changed, 145 insertions(+), 139 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 753aeef..110dfd1 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -26,7 +26,6 @@
* Dave Gordon <david.s.gordon@intel.com>
* Alex Dai <yu.dai@intel.com>
*/
-#include <linux/firmware.h>
#include "i915_drv.h"
#include "intel_uc.h"

@@ -587,140 +586,6 @@ int intel_guc_init_hw(struct drm_i915_private *dev_priv)
return ret;
}

-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;
-
- DRM_DEBUG_DRIVER("before requesting firmware: uC fw fetch status %s\n",
- intel_uc_fw_status_repr(uc_fw->fetch_status));
-
- err = request_firmware(&fw, uc_fw->path, &pdev->dev);
- if (err)
- goto fail;
- if (!fw)
- goto fail;
-
- DRM_DEBUG_DRIVER("fetch uC fw from %s succeeded, fw %p\n",
- uc_fw->path, fw);
-
- /* Check the size of the blob before examining buffer contents */
- if (fw->size < sizeof(struct uc_css_header)) {
- DRM_NOTE("Firmware header is missing\n");
- 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_NOTE("CSS header definition mismatch\n");
- 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_MAX_COUNT) {
- DRM_NOTE("RSA key size is bad\n");
- 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_NOTE("Missing firmware components\n");
- goto fail;
- }
-
- /*
- * The GuC firmware image has the version number embedded at a well-known
- * offset within the firmware blob; note that major / minor version are
- * TWO bytes each (i.e. u16), although all pointers and offsets are defined
- * in terms of bytes (u8).
- */
- switch (uc_fw->fw) {
- case INTEL_UC_FW_TYPE_GUC:
- /* Header and uCode will be loaded to WOPCM. Size of the two. */
- size = uc_fw->header_size + uc_fw->ucode_size;
-
- /* Top 32k of WOPCM is reserved (8K stack + 24k RC6 context). */
- if (size > intel_guc_wopcm_size(dev_priv)) {
- DRM_ERROR("Firmware is too large to fit in WOPCM\n");
- goto fail;
- }
- uc_fw->major_ver_found = css->guc.sw_version >> 16;
- uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
- break;
-
- case INTEL_UC_FW_TYPE_HUC:
- uc_fw->major_ver_found = css->huc.sw_version >> 16;
- uc_fw->minor_ver_found = css->huc.sw_version & 0xFFFF;
- break;
-
- default:
- DRM_ERROR("Unknown firmware type %d\n", uc_fw->fw);
- err = -ENOEXEC;
- goto fail;
- }
-
- if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
- uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
- DRM_NOTE("uC firmware version %d.%d, required %d.%d\n",
- uc_fw->major_ver_found, uc_fw->minor_ver_found,
- uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
- err = -ENOEXEC;
- goto fail;
- }
-
- DRM_DEBUG_DRIVER("firmware version %d.%d OK (minimum %d.%d)\n",
- uc_fw->major_ver_found, uc_fw->minor_ver_found,
- uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
-
- mutex_lock(&dev_priv->drm.struct_mutex);
- obj = i915_gem_object_create_from_data(dev_priv, fw->data, fw->size);
- mutex_unlock(&dev_priv->drm.struct_mutex);
- if (IS_ERR_OR_NULL(obj)) {
- err = obj ? PTR_ERR(obj) : -ENOMEM;
- goto fail;
- }
-
- uc_fw->obj = obj;
- uc_fw->size = fw->size;
-
- DRM_DEBUG_DRIVER("uC fw fetch status SUCCESS, obj %p\n",
- uc_fw->obj);
-
- release_firmware(fw);
- uc_fw->fetch_status = INTEL_UC_FIRMWARE_SUCCESS;
- return;
-
-fail:
- DRM_WARN("Failed to fetch valid uC firmware from %s (error %d)\n",
- uc_fw->path, err);
- DRM_DEBUG_DRIVER("uC fw fetch status FAIL; err %d, fw %p, obj %p\n",
- err, fw, uc_fw->obj);
-
- obj = fetch_and_zero(&uc_fw->obj);
- if (obj)
- i915_gem_object_put(obj);
-
- release_firmware(fw); /* OK even if fw is NULL */
- uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL;
-}

/**
* intel_guc_fetch_fw() - define parameters and fetch firmware
@@ -779,7 +644,7 @@ void intel_guc_fetch_fw(struct intel_guc *guc)

guc->fw.fetch_status = INTEL_UC_FIRMWARE_PENDING;
DRM_DEBUG_DRIVER("GuC firmware pending, path %s\n", fw_path);
- intel_uc_fw_fetch(dev_priv, &guc->fw);
+ guc->fw.fetch(dev_priv, &guc->fw);
/* status must now be FAIL or SUCCESS */
}

diff --git a/drivers/gpu/drm/i915/intel_huc.c b/drivers/gpu/drm/i915/intel_huc.c
index 0725e6f..7527988 100644
--- a/drivers/gpu/drm/i915/intel_huc.c
+++ b/drivers/gpu/drm/i915/intel_huc.c
@@ -186,7 +186,7 @@ void intel_huc_fetch_fw(struct intel_huc *huc)

WARN(huc->fw.path == NULL, "HuC present but no fw path\n");

- intel_uc_fw_fetch(dev_priv, &huc->fw);
+ huc->fw.fetch(dev_priv, &huc->fw);
}

/**
diff --git a/drivers/gpu/drm/i915/intel_uc.c b/drivers/gpu/drm/i915/intel_uc.c
index a089102..d2d2b6c 100644
--- a/drivers/gpu/drm/i915/intel_uc.c
+++ b/drivers/gpu/drm/i915/intel_uc.c
@@ -24,6 +24,10 @@

#include "i915_drv.h"
#include "intel_uc.h"
+#include <linux/firmware.h>
+
+static void uc_fetch_fw(struct drm_i915_private *dev_priv,
+ struct intel_uc_fw *uc_fw);

void intel_uc_init_early(struct drm_i915_private *dev_priv)
{
@@ -32,7 +36,10 @@ void intel_uc_init_early(struct drm_i915_private *dev_priv)

void intel_fetch_uc_fw(struct drm_i915_private *dev_priv)
{
+ dev_priv->huc.fw.fetch = uc_fetch_fw;
intel_huc_fetch_fw(&dev_priv->huc);
+
+ dev_priv->guc.fw.fetch = uc_fetch_fw;
intel_guc_fetch_fw(&dev_priv->guc);
}

@@ -120,3 +127,137 @@ int intel_guc_sample_forcewake(struct intel_guc *guc)
return intel_guc_send(guc, action, ARRAY_SIZE(action));
}

+static void uc_fetch_fw(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;
+
+ DRM_DEBUG_DRIVER("before requesting firmware: uC fw fetch status %s\n",
+ intel_uc_fw_status_repr(uc_fw->fetch_status));
+
+ err = request_firmware(&fw, uc_fw->path, &pdev->dev);
+ if (err)
+ goto fail;
+ if (!fw)
+ goto fail;
+
+ DRM_DEBUG_DRIVER("fetch uC fw from %s succeeded, fw %p\n",
+ uc_fw->path, fw);
+
+ /* Check the size of the blob before examining buffer contents */
+ if (fw->size < sizeof(struct uc_css_header)) {
+ DRM_NOTE("Firmware header is missing\n");
+ 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_NOTE("CSS header definition mismatch\n");
+ 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_MAX_COUNT) {
+ DRM_NOTE("RSA key size is bad\n");
+ 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_NOTE("Missing firmware components\n");
+ goto fail;
+ }
+
+ /*
+ * The GuC firmware image has the version number embedded at a well-known
+ * offset within the firmware blob; note that major / minor version are
+ * TWO bytes each (i.e. u16), although all pointers and offsets are defined
+ * in terms of bytes (u8).
+ */
+ switch (uc_fw->fw) {
+ case INTEL_UC_FW_TYPE_GUC:
+ /* Header and uCode will be loaded to WOPCM. Size of the two. */
+ size = uc_fw->header_size + uc_fw->ucode_size;
+
+ /* Top 32k of WOPCM is reserved (8K stack + 24k RC6 context). */
+ if (size > intel_guc_wopcm_size(dev_priv)) {
+ DRM_ERROR("Firmware is too large to fit in WOPCM\n");
+ goto fail;
+ }
+ uc_fw->major_ver_found = css->guc.sw_version >> 16;
+ uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
+ break;
+
+ case INTEL_UC_FW_TYPE_HUC:
+ uc_fw->major_ver_found = css->huc.sw_version >> 16;
+ uc_fw->minor_ver_found = css->huc.sw_version & 0xFFFF;
+ break;
+
+ default:
+ DRM_ERROR("Unknown firmware type %d\n", uc_fw->fw);
+ err = -ENOEXEC;
+ goto fail;
+ }
+
+ if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
+ uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
+ DRM_NOTE("uC firmware version %d.%d, required %d.%d\n",
+ uc_fw->major_ver_found, uc_fw->minor_ver_found,
+ uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
+ err = -ENOEXEC;
+ goto fail;
+ }
+
+ DRM_DEBUG_DRIVER("firmware version %d.%d OK (minimum %d.%d)\n",
+ uc_fw->major_ver_found, uc_fw->minor_ver_found,
+ uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
+
+ mutex_lock(&dev_priv->drm.struct_mutex);
+ obj = i915_gem_object_create_from_data(dev_priv, fw->data, fw->size);
+ mutex_unlock(&dev_priv->drm.struct_mutex);
+ if (IS_ERR_OR_NULL(obj)) {
+ err = obj ? PTR_ERR(obj) : -ENOMEM;
+ goto fail;
+ }
+
+ uc_fw->obj = obj;
+ uc_fw->size = fw->size;
+
+ DRM_DEBUG_DRIVER("uC fw fetch status SUCCESS, obj %p\n",
+ uc_fw->obj);
+
+ release_firmware(fw);
+ uc_fw->fetch_status = INTEL_UC_FIRMWARE_SUCCESS;
+ return;
+
+fail:
+ DRM_WARN("Failed to fetch valid uC firmware from %s (error %d)\n",
+ uc_fw->path, err);
+ DRM_DEBUG_DRIVER("uC fw fetch status FAIL; err %d, fw %p, obj %p\n",
+ err, fw, uc_fw->obj);
+
+ obj = fetch_and_zero(&uc_fw->obj);
+ if (obj)
+ i915_gem_object_put(obj);
+
+ release_firmware(fw); /* OK even if fw is NULL */
+ uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL;
+}
diff --git a/drivers/gpu/drm/i915/intel_uc.h b/drivers/gpu/drm/i915/intel_uc.h
index 19b8966..c390663 100644
--- a/drivers/gpu/drm/i915/intel_uc.h
+++ b/drivers/gpu/drm/i915/intel_uc.h
@@ -110,6 +110,8 @@ enum intel_uc_fw_type {
* of fetching, caching, and loading the firmware image into the GuC.
*/
struct intel_uc_fw {
+ void (*fetch)(struct drm_i915_private *dev_priv,
+ struct intel_uc_fw *uc_fw);
const char *path;
size_t size;
struct drm_i915_gem_object *obj;
@@ -196,8 +198,6 @@ void intel_guc_fini(struct drm_i915_private *dev_priv);
const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status);
int intel_guc_suspend(struct drm_i915_private *dev_priv);
int intel_guc_resume(struct drm_i915_private *dev_priv);
-void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
- struct intel_uc_fw *uc_fw);
u32 intel_guc_wopcm_size(struct drm_i915_private *dev_priv);

/* i915_guc_submission.c */
--
2.9.3