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SubjectRe: [PATCH v2 2/2] drivers: soc: Add LLCC driver
Hi Rishabh,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc7 next-20180327]
[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/Rishabh-Bhatnagar/SDM845-System-Cache-Driver/20180325-233519
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm

All errors (new ones prefixed by >>):

>> make[4]: *** No rule to make target 'drivers/soc/qcom/llcc-core.c', needed by 'drivers/soc/qcom/llcc-core.o'.
make[4]: *** [drivers/soc/qcom/llcc-slice.o] Error 1
make[4]: Target '__build' not remade because of errors.
--
>> drivers/soc/qcom/llcc-slice.c:130:25: error: redefinition of 'llcc_slice_getd'
struct llcc_slice_desc *llcc_slice_getd(struct device *dev, const char *name)
^~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:137:39: note: previous definition of 'llcc_slice_getd' was here
static inline struct llcc_slice_desc *llcc_slice_getd(struct device *dev,
^~~~~~~~~~~~~~~
>> drivers/soc/qcom/llcc-slice.c:163:6: error: redefinition of 'llcc_slice_putd'
void llcc_slice_putd(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:143:20: note: previous definition of 'llcc_slice_putd' was here
static inline void llcc_slice_putd(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~
>> drivers/soc/qcom/llcc-slice.c:206:5: error: redefinition of 'llcc_slice_activate'
int llcc_slice_activate(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:157:19: note: previous definition of 'llcc_slice_activate' was here
static inline int llcc_slice_activate(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~~~
>> drivers/soc/qcom/llcc-slice.c:245:5: error: redefinition of 'llcc_slice_deactivate'
int llcc_slice_deactivate(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:162:19: note: previous definition of 'llcc_slice_deactivate' was here
static inline int llcc_slice_deactivate(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~~~~~
>> drivers/soc/qcom/llcc-slice.c:283:5: error: redefinition of 'llcc_get_slice_id'
int llcc_get_slice_id(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:148:19: note: previous definition of 'llcc_get_slice_id' was here
static inline int llcc_get_slice_id(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~
>> drivers/soc/qcom/llcc-slice.c:299:8: error: redefinition of 'llcc_get_slice_size'
size_t llcc_get_slice_size(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:153:22: note: previous definition of 'llcc_get_slice_size' was here
static inline size_t llcc_get_slice_size(struct llcc_slice_desc *desc)
^~~~~~~~~~~~~~~~~~~
>> drivers/soc/qcom/llcc-slice.c:368:5: error: redefinition of 'qcom_llcc_probe'
int qcom_llcc_probe(struct platform_device *pdev,
^~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:166:19: note: previous definition of 'qcom_llcc_probe' was here
static inline int qcom_llcc_probe(struct platform_device *pdev,
^~~~~~~~~~~~~~~
>> drivers/soc/qcom/llcc-slice.c:441:5: error: redefinition of 'qcom_llcc_remove'
int qcom_llcc_remove(struct platform_device *pdev)
^~~~~~~~~~~~~~~~
In file included from drivers/soc/qcom/llcc-slice.c:28:0:
include/linux/soc/qcom/llcc-qcom.h:172:19: note: previous definition of 'qcom_llcc_remove' was here
static inline int qcom_llcc_remove(struct platform_device *pdev)
^~~~~~~~~~~~~~~~

vim +/llcc_slice_getd +130 drivers/soc/qcom/llcc-slice.c

121
122 /**
123 * llcc_slice_getd - get llcc slice descriptor
124 * @dev: Device pointer of the client
125 * @name: Name of the use case
126 *
127 * A pointer to llcc slice descriptor will be returned on success and
128 * and error pointer is returned on failure
129 */
> 130 struct llcc_slice_desc *llcc_slice_getd(struct device *dev, const char *name)
131 {
132 struct device_node *np = dev->of_node;
133 int index = 0;
134 const char *slice_name;
135 struct property *prop;
136
137 if (!np) {
138 dev_err(dev, "%s() currently only supports DT\n", __func__);
139 return ERR_PTR(-ENOENT);
140 }
141
142 if (!of_get_property(np, "cache-slice-names", NULL)) {
143 dev_err(dev,
144 "%s() requires a \"cache-slice-names\" property\n",
145 __func__);
146 return ERR_PTR(-ENOENT);
147 }
148
149 of_property_for_each_string(np, "cache-slice-names", prop, slice_name) {
150 if (!strcmp(name, slice_name))
151 break;
152 index++;
153 }
154
155 return llcc_slice_get_entry(dev, index);
156 }
157 EXPORT_SYMBOL(llcc_slice_getd);
158
159 /**
160 * llcc_slice_putd - llcc slice descritpor
161 * @desc: Pointer to llcc slice descriptor
162 */
> 163 void llcc_slice_putd(struct llcc_slice_desc *desc)
164 {
165 kfree(desc);
166 }
167 EXPORT_SYMBOL(llcc_slice_putd);
168
169 static int llcc_update_act_ctrl(struct llcc_drv_data *drv, u32 sid,
170 u32 act_ctrl_reg_val, u32 status)
171 {
172 u32 act_ctrl_reg;
173 u32 status_reg;
174 u32 slice_status;
175 unsigned long timeout;
176
177 act_ctrl_reg = drv->b_off + LLCC_TRP_ACT_CTRLn(sid);
178 status_reg = drv->b_off + LLCC_TRP_STATUSn(sid);
179
180 regmap_write(drv->llcc_map, act_ctrl_reg, act_ctrl_reg_val);
181
182 /* Make sure the activate trigger is applied before clearing it */
183 mb();
184
185 /* Clear the ACTIVE trigger */
186 act_ctrl_reg_val &= ~ACT_CTRL_ACT_TRIG;
187 regmap_write(drv->llcc_map, act_ctrl_reg, act_ctrl_reg_val);
188
189 timeout = jiffies + usecs_to_jiffies(LLCC_STATUS_READ_DELAY);
190 while (time_before(jiffies, timeout)) {
191 regmap_read(drv->llcc_map, status_reg, &slice_status);
192 if (!(slice_status & status))
193 return 0;
194 }
195
196 return -ETIMEDOUT;
197 }
198
199 /**
200 * llcc_slice_activate - Activate the llcc slice
201 * @desc: Pointer to llcc slice descriptor
202 *
203 * A value zero will be returned on success and a negative errno will
204 * be returned in error cases
205 */
> 206 int llcc_slice_activate(struct llcc_slice_desc *desc)
207 {
208 int rc = -EINVAL;
209 u32 act_ctrl_val;
210 struct llcc_drv_data *drv;
211
212 if (desc == NULL)
213 return rc;
214
215 drv = dev_get_drvdata(desc->dev);
216 if (!drv)
217 return rc;
218
219 mutex_lock(&drv->slice_mutex);
220 if (test_bit(desc->llcc_slice_id, drv->llcc_slice_map)) {
221 mutex_unlock(&drv->slice_mutex);
222 return 0;
223 }
224
225 act_ctrl_val = ACT_CTRL_OPCODE_ACTIVATE << ACT_CTRL_OPCODE_SHIFT;
226 act_ctrl_val |= ACT_CTRL_ACT_TRIG;
227
228 rc = llcc_update_act_ctrl(drv, desc->llcc_slice_id, act_ctrl_val,
229 DEACTIVATE);
230
231 __set_bit(desc->llcc_slice_id, drv->llcc_slice_map);
232 mutex_unlock(&drv->slice_mutex);
233
234 return rc;
235 }
236 EXPORT_SYMBOL(llcc_slice_activate);
237
238 /**
239 * llcc_slice_deactivate - Deactivate the llcc slice
240 * @desc: Pointer to llcc slice descriptor
241 *
242 * A value zero will be returned on success and a negative errno will
243 * be returned in error cases
244 */
> 245 int llcc_slice_deactivate(struct llcc_slice_desc *desc)
246 {
247 u32 act_ctrl_val;
248 int rc = -EINVAL;
249 struct llcc_drv_data *drv;
250
251 if (desc == NULL)
252 return rc;
253
254 drv = dev_get_drvdata(desc->dev);
255 if (!drv)
256 return rc;
257
258 mutex_lock(&drv->slice_mutex);
259 if (!test_bit(desc->llcc_slice_id, drv->llcc_slice_map)) {
260 mutex_unlock(&drv->slice_mutex);
261 return 0;
262 }
263 act_ctrl_val = ACT_CTRL_OPCODE_DEACTIVATE << ACT_CTRL_OPCODE_SHIFT;
264 act_ctrl_val |= ACT_CTRL_ACT_TRIG;
265
266 rc = llcc_update_act_ctrl(drv, desc->llcc_slice_id, act_ctrl_val,
267 ACTIVATE);
268
269 __clear_bit(desc->llcc_slice_id, drv->llcc_slice_map);
270 mutex_unlock(&drv->slice_mutex);
271
272 return rc;
273 }
274 EXPORT_SYMBOL(llcc_slice_deactivate);
275
276 /**
277 * llcc_get_slice_id - return the slice id
278 * @desc: Pointer to llcc slice descriptor
279 *
280 * A positive value will be returned on success and a negative errno will
281 * be returned on error
282 */
> 283 int llcc_get_slice_id(struct llcc_slice_desc *desc)
284 {
285 if (!desc)
286 return -EINVAL;
287
288 return desc->llcc_slice_id;
289 }
290 EXPORT_SYMBOL(llcc_get_slice_id);
291
292 /**
293 * llcc_get_slice_size - return the slice id
294 * @desc: Pointer to llcc slice descriptor
295 *
296 * A positive value will be returned on success and zero will returned on
297 * error
298 */
> 299 size_t llcc_get_slice_size(struct llcc_slice_desc *desc)
300 {
301 if (!desc)
302 return 0;
303
304 return desc->llcc_slice_size;
305 }
306 EXPORT_SYMBOL(llcc_get_slice_size);
307

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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