[Intel-gfx] [PATCH v2] drm/i915: Downgrade scare message for unknown HuC firmware
kbuild test robot
lkp at intel.com
Tue Jan 8 16:14:21 UTC 2019
Hi Chris,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on v5.0-rc1 next-20190108]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Chris-Wilson/drm-i915-Downgrade-scare-message-for-unknown-HuC-firmware/20190108-232025
base: git://anongit.freedesktop.org/drm-intel for-linux-next
config: i386-randconfig-x073-201901 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
In file included from include/drm/drm_print.h:32:0,
from drivers/gpu//drm/i915/intel_uc_fw.c:26:
drivers/gpu//drm/i915/intel_uc_fw.c: In function 'intel_uc_fw_fetch':
>> drivers/gpu//drm/i915/intel_uc_fw.c:50:12: error: 'i915' undeclared (first use in this function); did you mean 'to_i915'?
dev_info(i915->drm.dev,
^
include/linux/device.h:1469:12: note: in definition of macro 'dev_info'
_dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
^~~
drivers/gpu//drm/i915/intel_uc_fw.c:50:12: note: each undeclared identifier is reported only once for each function it appears in
dev_info(i915->drm.dev,
^
include/linux/device.h:1469:12: note: in definition of macro 'dev_info'
_dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
^~~
>> drivers/gpu//drm/i915/intel_uc_fw.c:52:29: error: 'const struct firmware' has no member named 'type'
intel_uc_fw_type_repr(fw->type),
^
include/linux/device.h:1469:33: note: in definition of macro 'dev_info'
_dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
^~~~~~~~~~~
vim +50 drivers/gpu//drm/i915/intel_uc_fw.c
> 26 #include <drm/drm_print.h>
27
28 #include "intel_uc_fw.h"
29 #include "i915_drv.h"
30
31 /**
32 * intel_uc_fw_fetch - fetch uC firmware
33 *
34 * @dev_priv: device private
35 * @uc_fw: uC firmware
36 *
37 * Fetch uC firmware into GEM obj.
38 */
39 void intel_uc_fw_fetch(struct drm_i915_private *dev_priv,
40 struct intel_uc_fw *uc_fw)
41 {
42 struct pci_dev *pdev = dev_priv->drm.pdev;
43 struct drm_i915_gem_object *obj;
44 const struct firmware *fw = NULL;
45 struct uc_css_header *css;
46 size_t size;
47 int err;
48
49 if (!uc_fw->path) {
> 50 dev_info(i915->drm.dev,
51 "%s: No firmware was defined for %s!\n",
> 52 intel_uc_fw_type_repr(fw->type),
53 intel_platform_name(INTEL_INFO(i915)->platform));
54 return;
55 }
56
57 DRM_DEBUG_DRIVER("%s fw fetch %s\n",
58 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path);
59
60 uc_fw->fetch_status = INTEL_UC_FIRMWARE_PENDING;
61 DRM_DEBUG_DRIVER("%s fw fetch %s\n",
62 intel_uc_fw_type_repr(uc_fw->type),
63 intel_uc_fw_status_repr(uc_fw->fetch_status));
64
65 err = request_firmware(&fw, uc_fw->path, &pdev->dev);
66 if (err) {
67 DRM_DEBUG_DRIVER("%s fw request_firmware err=%d\n",
68 intel_uc_fw_type_repr(uc_fw->type), err);
69 goto fail;
70 }
71
72 DRM_DEBUG_DRIVER("%s fw size %zu ptr %p\n",
73 intel_uc_fw_type_repr(uc_fw->type), fw->size, fw);
74
75 /* Check the size of the blob before examining buffer contents */
76 if (fw->size < sizeof(struct uc_css_header)) {
77 DRM_WARN("%s: Unexpected firmware size (%zu, min %zu)\n",
78 intel_uc_fw_type_repr(uc_fw->type),
79 fw->size, sizeof(struct uc_css_header));
80 err = -ENODATA;
81 goto fail;
82 }
83
84 css = (struct uc_css_header *)fw->data;
85
86 /* Firmware bits always start from header */
87 uc_fw->header_offset = 0;
88 uc_fw->header_size = (css->header_size_dw - css->modulus_size_dw -
89 css->key_size_dw - css->exponent_size_dw) *
90 sizeof(u32);
91
92 if (uc_fw->header_size != sizeof(struct uc_css_header)) {
93 DRM_WARN("%s: Mismatched firmware header definition\n",
94 intel_uc_fw_type_repr(uc_fw->type));
95 err = -ENOEXEC;
96 goto fail;
97 }
98
99 /* then, uCode */
100 uc_fw->ucode_offset = uc_fw->header_offset + uc_fw->header_size;
101 uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32);
102
103 /* now RSA */
104 if (css->key_size_dw != UOS_RSA_SCRATCH_COUNT) {
105 DRM_WARN("%s: Mismatched firmware RSA key size (%u)\n",
106 intel_uc_fw_type_repr(uc_fw->type), css->key_size_dw);
107 err = -ENOEXEC;
108 goto fail;
109 }
110 uc_fw->rsa_offset = uc_fw->ucode_offset + uc_fw->ucode_size;
111 uc_fw->rsa_size = css->key_size_dw * sizeof(u32);
112
113 /* At least, it should have header, uCode and RSA. Size of all three. */
114 size = uc_fw->header_size + uc_fw->ucode_size + uc_fw->rsa_size;
115 if (fw->size < size) {
116 DRM_WARN("%s: Truncated firmware (%zu, expected %zu)\n",
117 intel_uc_fw_type_repr(uc_fw->type), fw->size, size);
118 err = -ENOEXEC;
119 goto fail;
120 }
121
122 /*
123 * The GuC firmware image has the version number embedded at a
124 * well-known offset within the firmware blob; note that major / minor
125 * version are TWO bytes each (i.e. u16), although all pointers and
126 * offsets are defined in terms of bytes (u8).
127 */
128 switch (uc_fw->type) {
129 case INTEL_UC_FW_TYPE_GUC:
130 uc_fw->major_ver_found = css->guc.sw_version >> 16;
131 uc_fw->minor_ver_found = css->guc.sw_version & 0xFFFF;
132 break;
133
134 case INTEL_UC_FW_TYPE_HUC:
135 uc_fw->major_ver_found = css->huc.sw_version >> 16;
136 uc_fw->minor_ver_found = css->huc.sw_version & 0xFFFF;
137 break;
138
139 default:
140 MISSING_CASE(uc_fw->type);
141 break;
142 }
143
144 DRM_DEBUG_DRIVER("%s fw version %u.%u (wanted %u.%u)\n",
145 intel_uc_fw_type_repr(uc_fw->type),
146 uc_fw->major_ver_found, uc_fw->minor_ver_found,
147 uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
148
149 if (uc_fw->major_ver_wanted == 0 && uc_fw->minor_ver_wanted == 0) {
150 DRM_NOTE("%s: Skipping firmware version check\n",
151 intel_uc_fw_type_repr(uc_fw->type));
152 } else if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
153 uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
154 DRM_NOTE("%s: Wrong firmware version (%u.%u, required %u.%u)\n",
155 intel_uc_fw_type_repr(uc_fw->type),
156 uc_fw->major_ver_found, uc_fw->minor_ver_found,
157 uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
158 err = -ENOEXEC;
159 goto fail;
160 }
161
162 obj = i915_gem_object_create_from_data(dev_priv, fw->data, fw->size);
163 if (IS_ERR(obj)) {
164 err = PTR_ERR(obj);
165 DRM_DEBUG_DRIVER("%s fw object_create err=%d\n",
166 intel_uc_fw_type_repr(uc_fw->type), err);
167 goto fail;
168 }
169
170 uc_fw->obj = obj;
171 uc_fw->size = fw->size;
172 uc_fw->fetch_status = INTEL_UC_FIRMWARE_SUCCESS;
173 DRM_DEBUG_DRIVER("%s fw fetch %s\n",
174 intel_uc_fw_type_repr(uc_fw->type),
175 intel_uc_fw_status_repr(uc_fw->fetch_status));
176
177 release_firmware(fw);
178 return;
179
180 fail:
181 uc_fw->fetch_status = INTEL_UC_FIRMWARE_FAIL;
182 DRM_DEBUG_DRIVER("%s fw fetch %s\n",
183 intel_uc_fw_type_repr(uc_fw->type),
184 intel_uc_fw_status_repr(uc_fw->fetch_status));
185
186 DRM_WARN("%s: Failed to fetch firmware %s (error %d)\n",
187 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, err);
188 DRM_INFO("%s: Firmware can be downloaded from %s\n",
189 intel_uc_fw_type_repr(uc_fw->type), INTEL_UC_FIRMWARE_URL);
190
191 release_firmware(fw); /* OK even if fw is NULL */
192 }
193
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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