From 6a6582bfff39f099d0867e8b97b409efd1d84b9a Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 12 Nov 2015 17:11:29 +0200 Subject: [PATCH] drm/i915/gen9: extract parse_csr_fw The loader function will get a bit more complicated soon, extract the parsing code to make the control flow clearer. While doing that just use dev_priv->csr.dmc_payload as the indicator for whether it all suceeded or not. v2-v3: - unchanged v4: - rebased on top of latest drm-intel-nightly Cc: Damien Lespiau Cc: Imre Deak Cc: Sunil Kamath Signed-off-by: Daniel Vetter Signed-off-by: Animesh Manna [imre: remove note about BE cast from commit message, it's not relevant any more] Signed-off-by: Imre Deak Tested-by: Daniel Stone # SKL [Jani: fix checkpatch warn on multiple blank lines] Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1447341089-2735-1-git-send-email-imre.deak@intel.com --- drivers/gpu/drm/i915/intel_csr.c | 50 +++++++++++++++++++++++++--------------- 1 file changed, 31 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c index d14d11c..1c0765b 100644 --- a/drivers/gpu/drm/i915/intel_csr.c +++ b/drivers/gpu/drm/i915/intel_csr.c @@ -235,9 +235,9 @@ void intel_csr_load_program(struct drm_i915_private *dev_priv) } } -static void finish_csr_load(const struct firmware *fw, void *context) +static uint32_t *parse_csr_fw(struct drm_i915_private *dev_priv, + const struct firmware *fw) { - struct drm_i915_private *dev_priv = context; struct drm_device *dev = dev_priv->dev; struct intel_css_header *css_header; struct intel_package_header *package_header; @@ -248,14 +248,13 @@ static void finish_csr_load(const struct firmware *fw, void *context) uint32_t dmc_offset = CSR_DEFAULT_FW_OFFSET, readcount = 0, nbytes; uint32_t i; uint32_t *dmc_payload; - bool fw_loaded = false; if (!fw) - goto out; + return NULL; if (!stepping_info) { DRM_ERROR("Unknown stepping info, firmware loading failed\n"); - goto out; + return NULL; } stepping = stepping_info->stepping; @@ -267,7 +266,7 @@ static void finish_csr_load(const struct firmware *fw, void *context) (css_header->header_len * 4)) { DRM_ERROR("Firmware has wrong CSS header length %u bytes\n", (css_header->header_len * 4)); - goto out; + return NULL; } csr->version = css_header->version; @@ -280,7 +279,7 @@ static void finish_csr_load(const struct firmware *fw, void *context) CSR_VERSION_MINOR(csr->version), CSR_VERSION_MAJOR(SKL_CSR_VERSION_REQUIRED), CSR_VERSION_MINOR(SKL_CSR_VERSION_REQUIRED)); - goto out; + return NULL; } readcount += sizeof(struct intel_css_header); @@ -292,7 +291,7 @@ static void finish_csr_load(const struct firmware *fw, void *context) (package_header->header_len * 4)) { DRM_ERROR("Firmware has wrong package header length %u bytes\n", (package_header->header_len * 4)); - goto out; + return NULL; } readcount += sizeof(struct intel_package_header); @@ -312,7 +311,7 @@ static void finish_csr_load(const struct firmware *fw, void *context) } if (dmc_offset == CSR_DEFAULT_FW_OFFSET) { DRM_ERROR("Firmware not supported for %c stepping\n", stepping); - goto out; + return NULL; } readcount += dmc_offset; @@ -321,7 +320,7 @@ static void finish_csr_load(const struct firmware *fw, void *context) if (sizeof(struct intel_dmc_header) != (dmc_header->header_len)) { DRM_ERROR("Firmware has wrong dmc header length %u bytes\n", (dmc_header->header_len)); - goto out; + return NULL; } readcount += sizeof(struct intel_dmc_header); @@ -329,7 +328,7 @@ static void finish_csr_load(const struct firmware *fw, void *context) if (dmc_header->mmio_count > ARRAY_SIZE(csr->mmioaddr)) { DRM_ERROR("Firmware has wrong mmio count %u\n", dmc_header->mmio_count); - goto out; + return NULL; } csr->mmio_count = dmc_header->mmio_count; for (i = 0; i < dmc_header->mmio_count; i++) { @@ -337,7 +336,7 @@ static void finish_csr_load(const struct firmware *fw, void *context) dmc_header->mmioaddr[i] > CSR_MMIO_END_RANGE) { DRM_ERROR(" Firmware has wrong mmio address 0x%x\n", dmc_header->mmioaddr[i]); - goto out; + return NULL; } csr->mmioaddr[i] = dmc_header->mmioaddr[i]; csr->mmiodata[i] = dmc_header->mmiodata[i]; @@ -347,25 +346,38 @@ static void finish_csr_load(const struct firmware *fw, void *context) nbytes = dmc_header->fw_size * 4; if (nbytes > CSR_MAX_FW_SIZE) { DRM_ERROR("CSR firmware too big (%u) bytes\n", nbytes); - goto out; + return NULL; } csr->dmc_fw_size = dmc_header->fw_size; - csr->dmc_payload = kmalloc(nbytes, GFP_KERNEL); - if (!csr->dmc_payload) { + dmc_payload = kmalloc(nbytes, GFP_KERNEL); + if (!dmc_payload) { DRM_ERROR("Memory allocation failed for dmc payload\n"); - goto out; + return NULL; } - dmc_payload = csr->dmc_payload; memcpy(dmc_payload, &fw->data[readcount], nbytes); + return dmc_payload; +} + +static void finish_csr_load(const struct firmware *fw, void *context) +{ + struct drm_i915_private *dev_priv = context; + struct intel_csr *csr = &dev_priv->csr; + + if (!fw) + goto out; + + dev_priv->csr.dmc_payload = parse_csr_fw(dev_priv, fw); + if (!dev_priv->csr.dmc_payload) + goto out; + /* load csr program during system boot, as needed for DC states */ intel_csr_load_program(dev_priv); - fw_loaded = true; out: - if (fw_loaded) { + if (dev_priv->csr.dmc_payload) { intel_display_power_put(dev_priv, POWER_DOMAIN_INIT); DRM_INFO("Finished loading %s (v%u.%u)\n", -- 2.7.4