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25 #include <linux/types.h>
27 #include "intel_huc.h"
34 * GEN9 introduces a new dedicated firmware for usage in media HEVC (High
35 * Efficiency Video Coding) operations. Userspace can use the firmware
36 * capabilities by adding HuC specific commands to batch buffers.
39 * The same firmware loader is used as the GuC. However, the actual
40 * loading to HW is deferred until GEM initialization is done.
42 * Note that HuC firmware loading must be done before GuC loading.
45 #define BXT_HUC_FW_MAJOR 01
46 #define BXT_HUC_FW_MINOR 07
47 #define BXT_BLD_NUM 1398
49 #define SKL_HUC_FW_MAJOR 01
50 #define SKL_HUC_FW_MINOR 07
51 #define SKL_BLD_NUM 1398
53 #define KBL_HUC_FW_MAJOR 02
54 #define KBL_HUC_FW_MINOR 00
55 #define KBL_BLD_NUM 1810
57 #define GLK_HUC_FW_MAJOR 02
58 #define GLK_HUC_FW_MINOR 00
59 #define GLK_BLD_NUM 1748
61 #define HUC_FW_PATH(platform, major, minor, bld_num) \
62 "i915/" __stringify(platform) "_huc_ver" __stringify(major) "_" \
63 __stringify(minor) "_" __stringify(bld_num) ".bin"
65 #define I915_SKL_HUC_UCODE HUC_FW_PATH(skl, SKL_HUC_FW_MAJOR, \
66 SKL_HUC_FW_MINOR, SKL_BLD_NUM)
67 MODULE_FIRMWARE(I915_SKL_HUC_UCODE);
69 #define I915_BXT_HUC_UCODE HUC_FW_PATH(bxt, BXT_HUC_FW_MAJOR, \
70 BXT_HUC_FW_MINOR, BXT_BLD_NUM)
71 MODULE_FIRMWARE(I915_BXT_HUC_UCODE);
73 #define I915_KBL_HUC_UCODE HUC_FW_PATH(kbl, KBL_HUC_FW_MAJOR, \
74 KBL_HUC_FW_MINOR, KBL_BLD_NUM)
75 MODULE_FIRMWARE(I915_KBL_HUC_UCODE);
77 #define I915_GLK_HUC_UCODE HUC_FW_PATH(glk, GLK_HUC_FW_MAJOR, \
78 GLK_HUC_FW_MINOR, GLK_BLD_NUM)
80 static void huc_fw_select(struct intel_uc_fw *huc_fw)
82 struct intel_huc *huc = container_of(huc_fw, struct intel_huc, fw);
83 struct drm_i915_private *dev_priv = huc_to_i915(huc);
85 GEM_BUG_ON(huc_fw->type != INTEL_UC_FW_TYPE_HUC);
87 if (!HAS_HUC(dev_priv))
90 if (i915_modparams.huc_firmware_path) {
91 huc_fw->path = i915_modparams.huc_firmware_path;
92 huc_fw->major_ver_wanted = 0;
93 huc_fw->minor_ver_wanted = 0;
94 } else if (IS_SKYLAKE(dev_priv)) {
95 huc_fw->path = I915_SKL_HUC_UCODE;
96 huc_fw->major_ver_wanted = SKL_HUC_FW_MAJOR;
97 huc_fw->minor_ver_wanted = SKL_HUC_FW_MINOR;
98 } else if (IS_BROXTON(dev_priv)) {
99 huc_fw->path = I915_BXT_HUC_UCODE;
100 huc_fw->major_ver_wanted = BXT_HUC_FW_MAJOR;
101 huc_fw->minor_ver_wanted = BXT_HUC_FW_MINOR;
102 } else if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) {
103 huc_fw->path = I915_KBL_HUC_UCODE;
104 huc_fw->major_ver_wanted = KBL_HUC_FW_MAJOR;
105 huc_fw->minor_ver_wanted = KBL_HUC_FW_MINOR;
106 } else if (IS_GEMINILAKE(dev_priv)) {
107 huc_fw->path = I915_GLK_HUC_UCODE;
108 huc_fw->major_ver_wanted = GLK_HUC_FW_MAJOR;
109 huc_fw->minor_ver_wanted = GLK_HUC_FW_MINOR;
111 DRM_WARN("%s: No firmware known for this platform!\n",
112 intel_uc_fw_type_repr(huc_fw->type));
117 * intel_huc_init_early() - initializes HuC struct
118 * @huc: intel_huc struct
120 * On platforms with HuC selects firmware for uploading
122 void intel_huc_init_early(struct intel_huc *huc)
124 struct intel_uc_fw *huc_fw = &huc->fw;
126 intel_uc_fw_init(huc_fw, INTEL_UC_FW_TYPE_HUC);
127 huc_fw_select(huc_fw);
131 * huc_ucode_xfer() - DMA's the firmware
132 * @dev_priv: the drm_i915_private device
134 * Transfer the firmware image to RAM for execution by the microcontroller.
136 * Return: 0 on success, non-zero on failure
138 static int huc_ucode_xfer(struct intel_uc_fw *huc_fw, struct i915_vma *vma)
140 struct intel_huc *huc = container_of(huc_fw, struct intel_huc, fw);
141 struct drm_i915_private *dev_priv = huc_to_i915(huc);
142 unsigned long offset = 0;
146 GEM_BUG_ON(huc_fw->type != INTEL_UC_FW_TYPE_HUC);
148 intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
150 /* Set the source address for the uCode */
151 offset = guc_ggtt_offset(vma) + huc_fw->header_offset;
152 I915_WRITE(DMA_ADDR_0_LOW, lower_32_bits(offset));
153 I915_WRITE(DMA_ADDR_0_HIGH, upper_32_bits(offset) & 0xFFFF);
155 /* Hardware doesn't look at destination address for HuC. Set it to 0,
156 * but still program the correct address space.
158 I915_WRITE(DMA_ADDR_1_LOW, 0);
159 I915_WRITE(DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM);
161 size = huc_fw->header_size + huc_fw->ucode_size;
162 I915_WRITE(DMA_COPY_SIZE, size);
165 I915_WRITE(DMA_CTRL, _MASKED_BIT_ENABLE(HUC_UKERNEL | START_DMA));
167 /* Wait for DMA to finish */
168 ret = intel_wait_for_register_fw(dev_priv, DMA_CTRL, START_DMA, 0, 100);
170 DRM_DEBUG_DRIVER("HuC DMA transfer wait over with ret %d\n", ret);
172 /* Disable the bits once DMA is over */
173 I915_WRITE(DMA_CTRL, _MASKED_BIT_DISABLE(HUC_UKERNEL));
175 intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
181 * intel_huc_init_hw() - load HuC uCode to device
182 * @huc: intel_huc structure
184 * Called from intel_uc_init_hw() during driver loading and also after a GPU
185 * reset. Be note that HuC loading must be done before GuC loading.
187 * The firmware image should have already been fetched into memory by the
188 * earlier call to intel_uc_init_fw(), so here we need only check that
189 * is succeeded, and then transfer the image to the h/w.
192 int intel_huc_init_hw(struct intel_huc *huc)
194 return intel_uc_fw_upload(&huc->fw, huc_ucode_xfer);
198 * intel_huc_auth() - Authenticate HuC uCode
199 * @huc: intel_huc structure
201 * Called after HuC and GuC firmware loading during intel_uc_init_hw().
203 * This function pins HuC firmware image object into GGTT.
204 * Then it invokes GuC action to authenticate passing the offset to RSA
205 * signature through intel_guc_auth_huc(). It then waits for 50ms for
206 * firmware verification ACK and unpins the object.
208 int intel_huc_auth(struct intel_huc *huc)
210 struct drm_i915_private *i915 = huc_to_i915(huc);
211 struct intel_guc *guc = &i915->guc;
212 struct i915_vma *vma;
215 if (huc->fw.load_status != INTEL_UC_FIRMWARE_SUCCESS)
218 vma = i915_gem_object_ggtt_pin(huc->fw.obj, NULL, 0, 0,
219 PIN_OFFSET_BIAS | GUC_WOPCM_TOP);
222 DRM_ERROR("HuC: Failed to pin huc fw object %d\n", ret);
226 ret = intel_guc_auth_huc(guc,
227 guc_ggtt_offset(vma) + huc->fw.rsa_offset);
229 DRM_ERROR("HuC: GuC did not ack Auth request %d\n", ret);
233 /* Check authentication status, it should be done by now */
234 ret = intel_wait_for_register(i915,
240 DRM_ERROR("HuC: Authentication failed %d\n", ret);