drm/i915/uc: Move uC fw helper code into dedicated files
This is a prerequisite to unblock next steps. v2: correct include order (Joonas) v3: use common function prefix (Joonas) add kerneldoc (Michal) Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171004153327.32608-5-michal.wajdeczko@intel.com
This commit is contained in:
parent
1fc556fa34
commit
a16b4313ae
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@ -59,6 +59,7 @@ i915-y += i915_cmd_parser.o \
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# general-purpose microcontroller (GuC) support
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i915-y += intel_uc.o \
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intel_uc_fw.o \
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intel_guc_ct.o \
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intel_guc_log.o \
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intel_guc_loader.o \
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@ -26,19 +26,6 @@
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#include "intel_uc.h"
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#include <linux/firmware.h>
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/* Cleans up uC firmware by releasing the firmware GEM obj.
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*/
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static void __intel_uc_fw_fini(struct intel_uc_fw *uc_fw)
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{
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struct drm_i915_gem_object *obj;
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obj = fetch_and_zero(&uc_fw->obj);
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if (obj)
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i915_gem_object_put(obj);
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uc_fw->fetch_status = INTEL_UC_FIRMWARE_NONE;
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}
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/* Reset GuC providing us with fresh state for both GuC and HuC.
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*/
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static int __intel_uc_reset_hw(struct drm_i915_private *dev_priv)
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@ -112,154 +99,16 @@ void intel_uc_init_early(struct drm_i915_private *dev_priv)
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guc->notify = gen8_guc_raise_irq;
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}
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static void fetch_uc_fw(struct drm_i915_private *dev_priv,
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struct intel_uc_fw *uc_fw)
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{
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struct pci_dev *pdev = dev_priv->drm.pdev;
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struct drm_i915_gem_object *obj;
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const struct firmware *fw = NULL;
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struct uc_css_header *css;
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size_t size;
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int err;
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if (!uc_fw->path)
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return;
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uc_fw->fetch_status = INTEL_UC_FIRMWARE_PENDING;
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DRM_DEBUG_DRIVER("before requesting firmware: uC fw fetch status %s\n",
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intel_uc_fw_status_repr(uc_fw->fetch_status));
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err = request_firmware(&fw, uc_fw->path, &pdev->dev);
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if (err)
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goto fail;
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if (!fw)
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goto fail;
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DRM_DEBUG_DRIVER("fetch uC fw from %s succeeded, fw %p\n",
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uc_fw->path, fw);
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/* Check the size of the blob before examining buffer contents */
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if (fw->size < sizeof(struct uc_css_header)) {
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DRM_NOTE("Firmware header is missing\n");
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goto fail;
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}
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css = (struct uc_css_header *)fw->data;
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/* Firmware bits always start from header */
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uc_fw->header_offset = 0;
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uc_fw->header_size = (css->header_size_dw - css->modulus_size_dw -
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css->key_size_dw - css->exponent_size_dw) * sizeof(u32);
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if (uc_fw->header_size != sizeof(struct uc_css_header)) {
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DRM_NOTE("CSS header definition mismatch\n");
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goto fail;
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}
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/* then, uCode */
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uc_fw->ucode_offset = uc_fw->header_offset + uc_fw->header_size;
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uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32);
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/* now RSA */
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if (css->key_size_dw != UOS_RSA_SCRATCH_MAX_COUNT) {
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DRM_NOTE("RSA key size is bad\n");
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goto fail;
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}
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uc_fw->rsa_offset = uc_fw->ucode_offset + uc_fw->ucode_size;
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uc_fw->rsa_size = css->key_size_dw * sizeof(u32);
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/* At least, it should have header, uCode and RSA. Size of all three. */
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size = uc_fw->header_size + uc_fw->ucode_size + uc_fw->rsa_size;
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if (fw->size < size) {
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DRM_NOTE("Missing firmware components\n");
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goto fail;
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}
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/*
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* The GuC firmware image has the version number embedded at a
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* well-known offset within the firmware blob; note that major / minor
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* version are TWO bytes each (i.e. u16), although all pointers and
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* offsets are defined in terms of bytes (u8).
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*/
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switch (uc_fw->type) {
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case INTEL_UC_FW_TYPE_GUC:
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/* Header and uCode will be loaded to WOPCM. Size of the two. */
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size = uc_fw->header_size + uc_fw->ucode_size;
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/* Top 32k of WOPCM is reserved (8K stack + 24k RC6 context). */
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if (size > intel_guc_wopcm_size(dev_priv)) {
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DRM_ERROR("Firmware is too large to fit in WOPCM\n");
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goto fail;
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}
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uc_fw->major_ver_found = css->guc.sw_version >> 16;
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uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
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break;
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case INTEL_UC_FW_TYPE_HUC:
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uc_fw->major_ver_found = css->huc.sw_version >> 16;
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uc_fw->minor_ver_found = css->huc.sw_version & 0xFFFF;
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break;
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default:
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DRM_ERROR("Unknown firmware type %d\n", uc_fw->type);
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err = -ENOEXEC;
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goto fail;
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}
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if (uc_fw->major_ver_wanted == 0 && uc_fw->minor_ver_wanted == 0) {
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DRM_NOTE("Skipping %s firmware version check\n",
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intel_uc_fw_type_repr(uc_fw->type));
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} else if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
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uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
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DRM_NOTE("%s firmware version %d.%d, required %d.%d\n",
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intel_uc_fw_type_repr(uc_fw->type),
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uc_fw->major_ver_found, uc_fw->minor_ver_found,
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uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
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err = -ENOEXEC;
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goto fail;
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}
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DRM_DEBUG_DRIVER("firmware version %d.%d OK (minimum %d.%d)\n",
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uc_fw->major_ver_found, uc_fw->minor_ver_found,
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uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
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obj = i915_gem_object_create_from_data(dev_priv, fw->data, fw->size);
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if (IS_ERR(obj)) {
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err = PTR_ERR(obj);
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goto fail;
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}
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uc_fw->obj = obj;
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uc_fw->size = fw->size;
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DRM_DEBUG_DRIVER("uC fw fetch status SUCCESS, obj %p\n",
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uc_fw->obj);
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release_firmware(fw);
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uc_fw->fetch_status = INTEL_UC_FIRMWARE_SUCCESS;
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return;
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fail:
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DRM_WARN("Failed to fetch valid uC firmware from %s (error %d)\n",
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uc_fw->path, err);
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DRM_DEBUG_DRIVER("uC fw fetch status FAIL; err %d, fw %p, obj %p\n",
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err, fw, uc_fw->obj);
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release_firmware(fw); /* OK even if fw is NULL */
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uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL;
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}
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void intel_uc_init_fw(struct drm_i915_private *dev_priv)
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{
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fetch_uc_fw(dev_priv, &dev_priv->huc.fw);
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fetch_uc_fw(dev_priv, &dev_priv->guc.fw);
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intel_uc_fw_fetch(dev_priv, &dev_priv->huc.fw);
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intel_uc_fw_fetch(dev_priv, &dev_priv->guc.fw);
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}
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void intel_uc_fini_fw(struct drm_i915_private *dev_priv)
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{
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__intel_uc_fw_fini(&dev_priv->guc.fw);
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__intel_uc_fw_fini(&dev_priv->huc.fw);
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intel_uc_fw_fini(&dev_priv->guc.fw);
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intel_uc_fw_fini(&dev_priv->huc.fw);
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}
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static inline i915_reg_t guc_send_reg(struct intel_guc *guc, u32 i)
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@ -24,6 +24,7 @@
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#ifndef _INTEL_UC_H_
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#define _INTEL_UC_H_
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#include "intel_uc_fw.h"
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#include "intel_guc_fwif.h"
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#include "i915_guc_reg.h"
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#include "intel_ringbuffer.h"
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@ -70,72 +71,6 @@ struct i915_guc_client {
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uint64_t submissions[I915_NUM_ENGINES];
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};
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enum intel_uc_fw_status {
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INTEL_UC_FIRMWARE_FAIL = -1,
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INTEL_UC_FIRMWARE_NONE = 0,
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INTEL_UC_FIRMWARE_PENDING,
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INTEL_UC_FIRMWARE_SUCCESS
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};
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/* User-friendly representation of an enum */
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static inline
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const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status)
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{
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switch (status) {
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case INTEL_UC_FIRMWARE_FAIL:
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return "FAIL";
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case INTEL_UC_FIRMWARE_NONE:
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return "NONE";
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case INTEL_UC_FIRMWARE_PENDING:
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return "PENDING";
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case INTEL_UC_FIRMWARE_SUCCESS:
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return "SUCCESS";
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}
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return "<invalid>";
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}
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enum intel_uc_fw_type {
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INTEL_UC_FW_TYPE_GUC,
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INTEL_UC_FW_TYPE_HUC
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};
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/* User-friendly representation of an enum */
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static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
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{
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switch (type) {
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case INTEL_UC_FW_TYPE_GUC:
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return "GuC";
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case INTEL_UC_FW_TYPE_HUC:
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return "HuC";
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}
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return "uC";
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}
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/*
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* This structure encapsulates all the data needed during the process
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* of fetching, caching, and loading the firmware image into the GuC.
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*/
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struct intel_uc_fw {
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const char *path;
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size_t size;
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struct drm_i915_gem_object *obj;
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enum intel_uc_fw_status fetch_status;
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enum intel_uc_fw_status load_status;
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uint16_t major_ver_wanted;
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uint16_t minor_ver_wanted;
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uint16_t major_ver_found;
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uint16_t minor_ver_found;
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enum intel_uc_fw_type type;
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uint32_t header_size;
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uint32_t header_offset;
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uint32_t rsa_size;
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uint32_t rsa_offset;
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uint32_t ucode_size;
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uint32_t ucode_offset;
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};
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struct intel_guc_log {
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uint32_t flags;
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struct i915_vma *vma;
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193
drivers/gpu/drm/i915/intel_uc_fw.c
Normal file
193
drivers/gpu/drm/i915/intel_uc_fw.c
Normal file
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/*
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* Copyright © 2016-2017 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#include <linux/firmware.h>
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#include "intel_uc_fw.h"
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#include "i915_drv.h"
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/**
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* intel_uc_fw_fetch - fetch uC firmware
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*
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* @dev_priv: device private
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* @uc_fw: uC firmware
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*
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* Fetch uC firmware into GEM obj.
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*/
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void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
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struct intel_uc_fw *uc_fw)
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{
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struct pci_dev *pdev = dev_priv->drm.pdev;
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struct drm_i915_gem_object *obj;
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const struct firmware *fw = NULL;
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struct uc_css_header *css;
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size_t size;
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int err;
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if (!uc_fw->path)
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return;
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uc_fw->fetch_status = INTEL_UC_FIRMWARE_PENDING;
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DRM_DEBUG_DRIVER("before requesting firmware: uC fw fetch status %s\n",
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intel_uc_fw_status_repr(uc_fw->fetch_status));
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err = request_firmware(&fw, uc_fw->path, &pdev->dev);
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if (err)
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goto fail;
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if (!fw)
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goto fail;
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DRM_DEBUG_DRIVER("fetch uC fw from %s succeeded, fw %p\n",
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uc_fw->path, fw);
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/* Check the size of the blob before examining buffer contents */
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if (fw->size < sizeof(struct uc_css_header)) {
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DRM_NOTE("Firmware header is missing\n");
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goto fail;
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}
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css = (struct uc_css_header *)fw->data;
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/* Firmware bits always start from header */
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uc_fw->header_offset = 0;
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uc_fw->header_size = (css->header_size_dw - css->modulus_size_dw -
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css->key_size_dw - css->exponent_size_dw) *
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sizeof(u32);
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if (uc_fw->header_size != sizeof(struct uc_css_header)) {
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DRM_NOTE("CSS header definition mismatch\n");
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goto fail;
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}
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/* then, uCode */
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uc_fw->ucode_offset = uc_fw->header_offset + uc_fw->header_size;
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uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32);
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/* now RSA */
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if (css->key_size_dw != UOS_RSA_SCRATCH_MAX_COUNT) {
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DRM_NOTE("RSA key size is bad\n");
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goto fail;
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}
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uc_fw->rsa_offset = uc_fw->ucode_offset + uc_fw->ucode_size;
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uc_fw->rsa_size = css->key_size_dw * sizeof(u32);
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/* At least, it should have header, uCode and RSA. Size of all three. */
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size = uc_fw->header_size + uc_fw->ucode_size + uc_fw->rsa_size;
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if (fw->size < size) {
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DRM_NOTE("Missing firmware components\n");
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goto fail;
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}
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/*
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* The GuC firmware image has the version number embedded at a
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* well-known offset within the firmware blob; note that major / minor
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* version are TWO bytes each (i.e. u16), although all pointers and
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* offsets are defined in terms of bytes (u8).
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*/
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switch (uc_fw->type) {
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case INTEL_UC_FW_TYPE_GUC:
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/* Header and uCode will be loaded to WOPCM. Size of the two. */
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size = uc_fw->header_size + uc_fw->ucode_size;
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/* Top 32k of WOPCM is reserved (8K stack + 24k RC6 context). */
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if (size > intel_guc_wopcm_size(dev_priv)) {
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DRM_ERROR("Firmware is too large to fit in WOPCM\n");
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goto fail;
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}
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uc_fw->major_ver_found = css->guc.sw_version >> 16;
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uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
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break;
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case INTEL_UC_FW_TYPE_HUC:
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uc_fw->major_ver_found = css->huc.sw_version >> 16;
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uc_fw->minor_ver_found = css->huc.sw_version & 0xFFFF;
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break;
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default:
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DRM_ERROR("Unknown firmware type %d\n", uc_fw->type);
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err = -ENOEXEC;
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goto fail;
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}
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|
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if (uc_fw->major_ver_wanted == 0 && uc_fw->minor_ver_wanted == 0) {
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DRM_NOTE("Skipping %s firmware version check\n",
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intel_uc_fw_type_repr(uc_fw->type));
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} else if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
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uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
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DRM_NOTE("%s firmware version %d.%d, required %d.%d\n",
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intel_uc_fw_type_repr(uc_fw->type),
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uc_fw->major_ver_found, uc_fw->minor_ver_found,
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uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
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err = -ENOEXEC;
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goto fail;
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}
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DRM_DEBUG_DRIVER("firmware version %d.%d OK (minimum %d.%d)\n",
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uc_fw->major_ver_found, uc_fw->minor_ver_found,
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uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
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obj = i915_gem_object_create_from_data(dev_priv, fw->data, fw->size);
|
||||
if (IS_ERR(obj)) {
|
||||
err = PTR_ERR(obj);
|
||||
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);
|
||||
|
||||
release_firmware(fw); /* OK even if fw is NULL */
|
||||
uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL;
|
||||
}
|
||||
|
||||
/**
|
||||
* intel_uc_fw_fini - cleanup uC firmware
|
||||
*
|
||||
* @uc_fw: uC firmware
|
||||
*
|
||||
* Cleans up uC firmware by releasing the firmware GEM obj.
|
||||
*/
|
||||
void intel_uc_fw_fini(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;
|
||||
}
|
98
drivers/gpu/drm/i915/intel_uc_fw.h
Normal file
98
drivers/gpu/drm/i915/intel_uc_fw.h
Normal file
|
@ -0,0 +1,98 @@
|
|||
/*
|
||||
* Copyright © 2014-2017 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.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef _INTEL_UC_FW_H_
|
||||
#define _INTEL_UC_FW_H_
|
||||
|
||||
struct drm_i915_private;
|
||||
|
||||
enum intel_uc_fw_status {
|
||||
INTEL_UC_FIRMWARE_FAIL = -1,
|
||||
INTEL_UC_FIRMWARE_NONE = 0,
|
||||
INTEL_UC_FIRMWARE_PENDING,
|
||||
INTEL_UC_FIRMWARE_SUCCESS
|
||||
};
|
||||
|
||||
enum intel_uc_fw_type {
|
||||
INTEL_UC_FW_TYPE_GUC,
|
||||
INTEL_UC_FW_TYPE_HUC
|
||||
};
|
||||
|
||||
/*
|
||||
* This structure encapsulates all the data needed during the process
|
||||
* of fetching, caching, and loading the firmware image into the uC.
|
||||
*/
|
||||
struct intel_uc_fw {
|
||||
const char *path;
|
||||
size_t size;
|
||||
struct drm_i915_gem_object *obj;
|
||||
enum intel_uc_fw_status fetch_status;
|
||||
enum intel_uc_fw_status load_status;
|
||||
|
||||
uint16_t major_ver_wanted;
|
||||
uint16_t minor_ver_wanted;
|
||||
uint16_t major_ver_found;
|
||||
uint16_t minor_ver_found;
|
||||
|
||||
enum intel_uc_fw_type type;
|
||||
uint32_t header_size;
|
||||
uint32_t header_offset;
|
||||
uint32_t rsa_size;
|
||||
uint32_t rsa_offset;
|
||||
uint32_t ucode_size;
|
||||
uint32_t ucode_offset;
|
||||
};
|
||||
|
||||
static inline
|
||||
const char *intel_uc_fw_status_repr(enum intel_uc_fw_status status)
|
||||
{
|
||||
switch (status) {
|
||||
case INTEL_UC_FIRMWARE_FAIL:
|
||||
return "FAIL";
|
||||
case INTEL_UC_FIRMWARE_NONE:
|
||||
return "NONE";
|
||||
case INTEL_UC_FIRMWARE_PENDING:
|
||||
return "PENDING";
|
||||
case INTEL_UC_FIRMWARE_SUCCESS:
|
||||
return "SUCCESS";
|
||||
}
|
||||
return "<invalid>";
|
||||
}
|
||||
|
||||
static inline const char *intel_uc_fw_type_repr(enum intel_uc_fw_type type)
|
||||
{
|
||||
switch (type) {
|
||||
case INTEL_UC_FW_TYPE_GUC:
|
||||
return "GuC";
|
||||
case INTEL_UC_FW_TYPE_HUC:
|
||||
return "HuC";
|
||||
}
|
||||
return "uC";
|
||||
}
|
||||
|
||||
void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
|
||||
struct intel_uc_fw *uc_fw);
|
||||
void intel_uc_fw_fini(struct intel_uc_fw *uc_fw);
|
||||
|
||||
#endif
|
Loading…
Reference in a new issue