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Message-ID: <201607282033.1nkvsKIc%fengguang.wu@intel.com>
Date: Thu, 28 Jul 2016 20:58:40 +0800
From: kbuild test robot <lkp@...el.com>
To: Serge Semin <fancer.lancer@...il.com>
Cc: kbuild-all@...org, jdmason@...zu.us, dave.jiang@...el.com,
Allen.Hubbe@....com, Xiangliang.Yu@....com,
Sergey.Semin@...latforms.ru, linux-ntb@...glegroups.com,
linux-kernel@...r.kernel.org, Serge Semin <fancer.lancer@...il.com>
Subject: Re: [PATCH 3/3] ntb: Test client drivers for asynchronous NTB devices
Hi,
[auto build test WARNING on ntb/ntb-next]
[cannot apply to v4.7 next-20160728]
[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/Serge-Semin/ntb-Asynchronous-NTB-devices-support/20160727-082033
base: https://github.com/jonmason/ntb ntb-next
config: sparc64-allyesconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=sparc64
All warnings (new ones prefixed by >>):
In file included from include/linux/swab.h:4:0,
from include/uapi/linux/byteorder/big_endian.h:12,
from include/linux/byteorder/big_endian.h:4,
from arch/sparc/include/uapi/asm/byteorder.h:4,
from arch/sparc/include/asm/bitops_64.h:15,
from arch/sparc/include/asm/bitops.h:4,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from drivers/ntb/test/ntb_mw_test.c:57:
drivers/ntb/test/ntb_mw_test.c: In function 'mw_send_inmw_addrs':
>> drivers/ntb/test/ntb_mw_test.c:353:49: warning: right shift count >= width of type [-Wshift-count-overflow]
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
include/uapi/linux/swab.h:116:32: note: in definition of macro '__swab32'
(__builtin_constant_p((__u32)(x)) ? \
^
include/linux/byteorder/generic.h:87:21: note: in expansion of macro '__cpu_to_le32'
#define cpu_to_le32 __cpu_to_le32
^
>> drivers/ntb/test/ntb_mw_test.c:353:20: note: in expansion of macro 'to_sh32'
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
>> drivers/ntb/test/ntb_mw_test.c:353:49: warning: right shift count >= width of type [-Wshift-count-overflow]
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
include/uapi/linux/swab.h:17:12: note: in definition of macro '___constant_swab32'
(((__u32)(x) & (__u32)0x000000ffUL) << 24) | \
^
include/uapi/linux/byteorder/big_endian.h:32:43: note: in expansion of macro '__swab32'
#define __cpu_to_le32(x) ((__force __le32)__swab32((x)))
^
include/linux/byteorder/generic.h:87:21: note: in expansion of macro '__cpu_to_le32'
#define cpu_to_le32 __cpu_to_le32
^
>> drivers/ntb/test/ntb_mw_test.c:353:20: note: in expansion of macro 'to_sh32'
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
>> drivers/ntb/test/ntb_mw_test.c:353:49: warning: right shift count >= width of type [-Wshift-count-overflow]
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
include/uapi/linux/swab.h:18:12: note: in definition of macro '___constant_swab32'
(((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \
^
include/uapi/linux/byteorder/big_endian.h:32:43: note: in expansion of macro '__swab32'
#define __cpu_to_le32(x) ((__force __le32)__swab32((x)))
^
include/linux/byteorder/generic.h:87:21: note: in expansion of macro '__cpu_to_le32'
#define cpu_to_le32 __cpu_to_le32
^
>> drivers/ntb/test/ntb_mw_test.c:353:20: note: in expansion of macro 'to_sh32'
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
>> drivers/ntb/test/ntb_mw_test.c:353:49: warning: right shift count >= width of type [-Wshift-count-overflow]
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
include/uapi/linux/swab.h:19:12: note: in definition of macro '___constant_swab32'
(((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \
^
include/uapi/linux/byteorder/big_endian.h:32:43: note: in expansion of macro '__swab32'
#define __cpu_to_le32(x) ((__force __le32)__swab32((x)))
^
include/linux/byteorder/generic.h:87:21: note: in expansion of macro '__cpu_to_le32'
#define cpu_to_le32 __cpu_to_le32
^
>> drivers/ntb/test/ntb_mw_test.c:353:20: note: in expansion of macro 'to_sh32'
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
>> drivers/ntb/test/ntb_mw_test.c:353:49: warning: right shift count >= width of type [-Wshift-count-overflow]
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
include/uapi/linux/swab.h:20:12: note: in definition of macro '___constant_swab32'
(((__u32)(x) & (__u32)0xff000000UL) >> 24)))
^
include/uapi/linux/byteorder/big_endian.h:32:43: note: in expansion of macro '__swab32'
#define __cpu_to_le32(x) ((__force __le32)__swab32((x)))
^
include/linux/byteorder/generic.h:87:21: note: in expansion of macro '__cpu_to_le32'
#define cpu_to_le32 __cpu_to_le32
^
>> drivers/ntb/test/ntb_mw_test.c:353:20: note: in expansion of macro 'to_sh32'
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
>> drivers/ntb/test/ntb_mw_test.c:353:49: warning: right shift count >= width of type [-Wshift-count-overflow]
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
include/uapi/linux/swab.h:118:12: note: in definition of macro '__swab32'
__fswab32(x))
^
include/linux/byteorder/generic.h:87:21: note: in expansion of macro '__cpu_to_le32'
#define cpu_to_le32 __cpu_to_le32
^
>> drivers/ntb/test/ntb_mw_test.c:353:20: note: in expansion of macro 'to_sh32'
msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
^
drivers/ntb/test/ntb_mw_test.c: In function 'mw_set_outmw_addr':
>> drivers/ntb/test/ntb_mw_test.c:407:61: warning: left shift count >= width of type [-Wshift-count-overflow]
outmw->dma_addr |= ((dma_addr_t)from_sh32(msg->payload[1]) << 32);
^
>> drivers/ntb/test/ntb_mw_test.c:413:23: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
"within %u bytes", (void *)outmw->dma_addr,
^
drivers/ntb/test/ntb_mw_test.c:189:29: note: in definition of macro 'dev_err_mw'
dev_err(&ctx->ntb->dev, ## args)
^
drivers/ntb/test/ntb_mw_test.c:422:33: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
"outbound memory window %d", (void *)outmw->dma_addr,
^
drivers/ntb/test/ntb_mw_test.c:189:29: note: in definition of macro 'dev_err_mw'
dev_err(&ctx->ntb->dev, ## args)
^
In file included from include/linux/printk.h:289:0,
from include/linux/kernel.h:13,
from drivers/ntb/test/ntb_mw_test.c:57:
drivers/ntb/test/ntb_mw_test.c:431:27: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
"address 0x%p", mwindx, (void *)outmw->dma_addr);
^
include/linux/dynamic_debug.h:87:9: note: in definition of macro 'dynamic_dev_dbg'
##__VA_ARGS__); \
^
>> drivers/ntb/test/ntb_mw_test.c:195:2: note: in expansion of macro 'dev_dbg'
dev_dbg(&ctx->ntb->dev, ## args)
^
>> drivers/ntb/test/ntb_mw_test.c:430:2: note: in expansion of macro 'dev_dbg_mw'
dev_dbg_mw(ctx, "Outbound memory window %d is initialized with "
^
drivers/ntb/test/ntb_mw_test.c: In function 'mw_dbgfs_outmw_cfg_read':
drivers/ntb/test/ntb_mw_test.c:766:30: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
"DMA address\t\t- 0x%p\n", (void *)wrap->dma_addr);
^
drivers/ntb/test/ntb_mw_test.c: In function 'mw_dbgfs_inmw_cfg_read':
drivers/ntb/test/ntb_mw_test.c:915:30: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
"DMA address\t\t- 0x%p\n", (void *)wrap->dma_addr);
^
drivers/ntb/test/ntb_mw_test.c: In function 'mw_create_inmws':
drivers/ntb/test/ntb_mw_test.c:1197:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
"aligned with %lu", (void *)inmw->dma_addr, mwindx,
^
drivers/ntb/test/ntb_mw_test.c:189:29: note: in definition of macro 'dev_err_mw'
dev_err(&ctx->ntb->dev, ## args)
^
vim +353 drivers/ntb/test/ntb_mw_test.c
189 dev_err(&ctx->ntb->dev, ## args)
190 #define dev_warn_mw(ctx, args...) \
191 dev_warn(&ctx->ntb->dev, ## args)
192 #define dev_info_mw(ctx, args...) \
193 dev_info(&ctx->ntb->dev, ## args)
194 #define dev_dbg_mw(ctx, args...) \
> 195 dev_dbg(&ctx->ntb->dev, ## args)
196
197 /*
198 * Some common constant used in the driver for better readability:
199 * @ON: Enable something
200 * @OFF: Disable something
201 * @SUCCESS: Success of a function execution
202 * @MIN_MW_CNT: Minimum memory windows count
203 * @MAX_MW_CNT: Maximum memory windows count
204 */
205 #define ON ((u32)0x1)
206 #define OFF ((u32)0x0)
207 #define SUCCESS 0
208 #define MIN_MW_CNT ((unsigned char)1)
209 #define MAX_MW_CNT ((unsigned char)255)
210
211 /*
212 * Shared data converter to support the different CPU architectures
213 */
214 #define to_sh32(data) \
215 cpu_to_le32((data))
216 #define from_sh32(data) \
217 le32_to_cpu((data))
218
219 /*
220 * Module parameters:
221 * @inmw_cnt: Number of inbound memory windows [1; 255]
222 * @outmw_cnt: Number of outbound memory windows [1; 255]
223 * If the specified value exceeds the maximum possible valiue, then it is
224 * initialized with maximum one
225 */
226 static unsigned char inmws_cnt = MAX_MW_CNT;
227 module_param(inmws_cnt, byte, 0000);
228 MODULE_PARM_DESC(inmws_cnt,
229 "Inbound memory windows count. Those are the memory windows, which are "
230 "locally allocated. Their address is sent to the remote host."
231 " - Parameter can be set within [1; 255], where 255 means maximum possible"
232 " number of windows");
233
234 /*===========================================================================
235 * Helper methods
236 *===========================================================================*/
237
238 /*
239 * Alter the passed driver paremeters
240 */
241 static void mw_alter_params(struct mw_ctx *ctx)
242 {
243 unsigned char inmws_cnt_bak = ctx->inmws_cnt;
244
245 /* Clamp the inbound memory windows parameter */
246 ctx->inmws_cnt = clamp(inmws_cnt,
247 MIN_MW_CNT, (unsigned char)ctx->inmws_cnt);
248 if (inmws_cnt_bak != ctx->inmws_cnt) {
249 dev_warn_mw(ctx,
250 "Inbound memory windows count is altered from "
251 "%hhu to %hhu", inmws_cnt_bak, ctx->inmws_cnt);
252 }
253
254 dev_dbg_mw(ctx, "Memory windows test driver parameter is verified");
255 }
256
257 /*
258 * Memory block IO write method
259 */
260 static void iomem_write(void __iomem *dst, const void *src, size_t cnt)
261 {
262 while (cnt--) {
263 iowrite8(*(u8 *)src, dst);
264 dst++;
265 src++;
266 }
267 }
268
269 /*
270 * Memory block IO read method
271 */
272 static void iomem_read(void __iomem *src, void *dst, size_t cnt)
273 {
274 while (cnt--) {
275 *(u8 *)dst = ioread8(src);
276 dst++;
277 src++;
278 }
279 }
280
281 /*===========================================================================
282 * Message command handlers
283 *===========================================================================*/
284
285 /*
286 * Send MW_GETADDRS command method
287 */
288 static void mw_send_getaddrs_cmd(struct mw_ctx *ctx)
289 {
290 struct ntb_msg msg;
291 int sts;
292
293 /* Clear the message structure */
294 memset(&msg, 0, sizeof(msg));
295
296 /* Set the message type only */
297 msg.type = to_sh32(MW_GETADDRS);
298
299 /* Send the message */
300 sts = ntb_msg_post(ctx->ntb, &msg);
301 if (SUCCESS != sts) {
302 dev_err_mw(ctx, "Failed to send message to get outbound window "
303 "addresses");
304 }
305 }
306
307 /*
308 * Send MW_FREEADDRS command method
309 */
310 static void mw_send_freeaddrs_cmd(struct mw_ctx *ctx)
311 {
312 struct ntb_msg msg;
313 int sts;
314
315 /* Clear the message structure */
316 memset(&msg, 0, sizeof(msg));
317
318 /* Set the message type only */
319 msg.type = to_sh32(MW_FREEADDRS);
320
321 /* Send the message */
322 sts = ntb_msg_post(ctx->ntb, &msg);
323 if (SUCCESS != sts) {
324 dev_err_mw(ctx, "Failed to send a message to disable the peer "
325 "outbound windows");
326 }
327 }
328
329 /*
330 * Callback method for response on the command MW_GETADDRS
331 */
332 static void mw_send_inmw_addrs(struct mw_ctx *ctx)
333 {
334 struct ntb_msg msg;
335 struct inmw_wrap *inmw;
336 int mwindx, sts;
337
338 /* Clear the message structure */
339 memset(&msg, 0, sizeof(msg));
340
341 /* Walk through all the inbound memory windows and send the
342 * corresponding DMA address of the window */
343 for (mwindx = 0; mwindx < ctx->inmws_cnt; mwindx++) {
344 inmw = &ctx->inmws[mwindx];
345 /* Set the type and the memory window index */
346 msg.type = to_sh32(MW_DMAADDR | ((u32)mwindx << 16));
347
348 /* First set the size of the memory window */
349 msg.payload[0] = to_sh32(inmw->size);
350
351 /* Set the Upper part of the memory window address */
352 #ifdef CONFIG_64BIT
> 353 msg.payload[1] = to_sh32((u32)(inmw->dma_addr >> 32));
354 #else
355 /* WARNING! NTB entpoints must either have the same architecture
356 * (x32 or x64) or use lower 4Gb for memory windows */
357 msg.payload[1] = 0;
358 #endif /* !CONFIG_64BIT */
359 /* Set the Lower part of the memory window address */
360 msg.payload[2] = to_sh32((u32)(inmw->dma_addr));
361
362 /* Send the message */
363 sts = ntb_msg_post(ctx->ntb, &msg);
364 if (SUCCESS != sts) {
365 dev_err_mw(ctx,
366 "Failed to send a message with window %d "
367 "address", mwindx);
368 }
369 }
370 }
371
372 /*
373 * Method to set the corresponding memory window and enable it
374 */
375 static void mw_set_outmw_addr(struct mw_ctx *ctx, const struct ntb_msg *msg)
376 {
377 struct outmw_wrap *outmw;
378 int mwindx, sts;
379
380 /* Read the memory windows index (it's the part of the message type) */
381 mwindx = from_sh32(msg->type) >> 16;
382 if (ctx->outmws_cnt <= mwindx) {
383 dev_err_mw(ctx,
384 "Retrieved invalid outbound memory window index %d",
385 mwindx);
386 return;
387 }
388 outmw = &ctx->outmws[mwindx];
389
390 /* Read the memory window size and check whether it has proper size and
391 * alignment */
392 outmw->size = from_sh32(msg->payload[0]);
393 if (!IS_ALIGNED(outmw->size, outmw->size_align) ||
394 outmw->size_max < outmw->size) {
395 dev_err_mw(ctx,
396 "Retrieved invalid memory window %d size %u "
397 "(max: %u, align: %u)", mwindx, (unsigned int)outmw->size,
398 (unsigned int)outmw->size_max,
399 (unsigned int)outmw->size_align);
400 return;
401 }
402
403 /* Read the DMA address, where the second DWORD is the upper part and
404 * the third DWORD - lower */
405 outmw->dma_addr = from_sh32(msg->payload[2]);
406 #ifdef CONFIG_64BIT
> 407 outmw->dma_addr |= ((dma_addr_t)from_sh32(msg->payload[1]) << 32);
408 #endif /* CONFIG_64BIT */
409 /* Check whether the retrieved address is properly aligned */
410 if (!IS_ALIGNED(outmw->dma_addr, outmw->addr_align)) {
411 dev_err_mw(ctx,
412 "Outbound memory window address %p is not aligned "
> 413 "within %u bytes", (void *)outmw->dma_addr,
414 (unsigned int)outmw->addr_align);
415 return;
416 }
417
418 /* Set the translation address of the outbound memory window */
419 sts = ntb_mw_set_trans(ctx->ntb, mwindx, outmw->dma_addr, outmw->size);
420 if (SUCCESS != sts) {
421 dev_err_mw(ctx, "Failed to set the translated address %p of "
422 "outbound memory window %d", (void *)outmw->dma_addr,
423 mwindx);
424 return;
425 }
426
427 /* Enable the memory window */
428 outmw->enabled = true;
429
> 430 dev_dbg_mw(ctx, "Outbound memory window %d is initialized with "
> 431 "address 0x%p", mwindx, (void *)outmw->dma_addr);
432 }
433
434 /*
---
0-DAY kernel test infrastructure Open Source Technology Center
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