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Message-ID: <202005090814.FeTBGZEQ%lkp@intel.com>
Date: Sat, 9 May 2020 08:47:24 +0800
From: kbuild test robot <lkp@...el.com>
To: Diana Craciun <diana.craciun@....nxp.com>,
alex.williamson@...hat.com, kvm@...r.kernel.org
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
laurentiu.tudor@....com, bharatb.linux@...il.com,
Diana Craciun <diana.craciun@....nxp.com>,
Bharat Bhushan <Bharat.Bhushan@....com>
Subject: Re: [PATCH v2 9/9] vfio/fsl-mc: Add read/write support for fsl-mc
devices
Hi Diana,
I love your patch! Yet something to improve:
[auto build test ERROR on vfio/next]
[also build test ERROR on linus/master v5.7-rc4 next-20200508]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Diana-Craciun/vfio-fsl-mc-VFIO-support-for-FSL-MC-devices/20200509-034845
base: https://github.com/awilliam/linux-vfio.git next
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_release':
drivers/vfio/fsl-mc/vfio_fsl_mc.c:170:9: error: implicit declaration of function 'dprc_reset_container'; did you mean 'resource_contains'? [-Werror=implicit-function-declaration]
ret = dprc_reset_container(mc_cont->mc_io, 0,
^~~~~~~~~~~~~~~~~~~~
resource_contains
drivers/vfio/fsl-mc/vfio_fsl_mc.c:173:6: error: 'DPRC_RESET_OPTION_NON_RECURSIVE' undeclared (first use in this function)
DPRC_RESET_OPTION_NON_RECURSIVE);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/vfio/fsl-mc/vfio_fsl_mc.c:173:6: note: each undeclared identifier is reported only once for each function it appears in
drivers/vfio/fsl-mc/vfio_fsl_mc.c:177:3: error: implicit declaration of function 'fsl_mc_cleanup_irq_pool'; did you mean 'fsl_mc_free_irqs'? [-Werror=implicit-function-declaration]
fsl_mc_cleanup_irq_pool(mc_cont);
^~~~~~~~~~~~~~~~~~~~~~~
fsl_mc_free_irqs
drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_read':
>> drivers/vfio/fsl-mc/vfio_fsl_mc.c:348:13: error: implicit declaration of function 'readq'; did you mean 'readl'? [-Werror=implicit-function-declaration]
data[i] = readq(region->ioaddr + i * sizeof(uint64_t));
^~~~~
readl
drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_send_command':
>> drivers/vfio/fsl-mc/vfio_fsl_mc.c:367:3: error: implicit declaration of function 'writeq_relaxed'; did you mean 'writeb_relaxed'? [-Werror=implicit-function-declaration]
writeq_relaxed(cmd_data[i], ioaddr + i * sizeof(uint64_t));
^~~~~~~~~~~~~~
writeb_relaxed
>> drivers/vfio/fsl-mc/vfio_fsl_mc.c:370:2: error: implicit declaration of function 'writeq'; did you mean 'writel'? [-Werror=implicit-function-declaration]
writeq(cmd_data[0], ioaddr);
^~~~~~
writel
In file included from include/linux/byteorder/little_endian.h:5:0,
from arch/x86/include/uapi/asm/byteorder.h:5,
from include/asm-generic/bitops/le.h:6,
from arch/x86/include/asm/bitops.h:395,
from include/linux/bitops.h:29,
from include/linux/kernel.h:12,
from arch/x86/include/asm/percpu.h:45,
from arch/x86/include/asm/current.h:6,
from include/linux/sched.h:12,
from include/linux/ratelimit.h:6,
from include/linux/dev_printk.h:16,
from include/linux/device.h:15,
from drivers/vfio/fsl-mc/vfio_fsl_mc.c:7:
>> drivers/vfio/fsl-mc/vfio_fsl_mc.c:380:24: error: implicit declaration of function 'readq_relaxed'; did you mean 'readw_relaxed'? [-Werror=implicit-function-declaration]
header = cpu_to_le64(readq_relaxed(ioaddr));
^
include/uapi/linux/byteorder/little_endian.h:31:51: note: in definition of macro '__cpu_to_le64'
#define __cpu_to_le64(x) ((__force __le64)(__u64)(x))
^
>> drivers/vfio/fsl-mc/vfio_fsl_mc.c:380:12: note: in expansion of macro 'cpu_to_le64'
header = cpu_to_le64(readq_relaxed(ioaddr));
^~~~~~~~~~~
drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_bus_notifier':
drivers/vfio/fsl-mc/vfio_fsl_mc.c:517:9: error: 'struct fsl_mc_device' has no member named 'driver_override'
mc_dev->driver_override = kasprintf(GFP_KERNEL, "%s",
^~
drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_init_device':
drivers/vfio/fsl-mc/vfio_fsl_mc.c:555:8: error: implicit declaration of function 'dprc_setup'; did you mean 'x2apic_setup'? [-Werror=implicit-function-declaration]
ret = dprc_setup(mc_dev);
^~~~~~~~~~
x2apic_setup
drivers/vfio/fsl-mc/vfio_fsl_mc.c:562:8: error: implicit declaration of function 'dprc_scan_container'; did you mean 'init_section_contains'? [-Werror=implicit-function-declaration]
ret = dprc_scan_container(mc_dev, false);
^~~~~~~~~~~~~~~~~~~
init_section_contains
drivers/vfio/fsl-mc/vfio_fsl_mc.c:566:3: error: implicit declaration of function 'dprc_cleanup'; did you mean 'pud_clear'? [-Werror=implicit-function-declaration]
dprc_cleanup(mc_dev);
^~~~~~~~~~~~
pud_clear
drivers/vfio/fsl-mc/vfio_fsl_mc.c: In function 'vfio_fsl_mc_device_remove':
drivers/vfio/fsl-mc/vfio_fsl_mc.c:625:14: error: 'struct fsl_mc_device' has no member named 'driver_override'
kfree(mc_dev->driver_override);
^~
drivers/vfio/fsl-mc/vfio_fsl_mc.c:626:8: error: 'struct fsl_mc_device' has no member named 'driver_override'
mc_dev->driver_override = NULL;
^~
cc1: some warnings being treated as errors
vim +348 drivers/vfio/fsl-mc/vfio_fsl_mc.c
314
315 static ssize_t vfio_fsl_mc_read(void *device_data, char __user *buf,
316 size_t count, loff_t *ppos)
317 {
318 struct vfio_fsl_mc_device *vdev = device_data;
319 unsigned int index = VFIO_FSL_MC_OFFSET_TO_INDEX(*ppos);
320 loff_t off = *ppos & VFIO_FSL_MC_OFFSET_MASK;
321 struct vfio_fsl_mc_region *region;
322 u64 data[8];
323 int i;
324
325 /* Read ioctl supported only for DPRC and DPMCP device */
326 if (strcmp(vdev->mc_dev->obj_desc.type, "dprc") &&
327 strcmp(vdev->mc_dev->obj_desc.type, "dpmcp"))
328 return -EINVAL;
329
330 if (index >= vdev->num_regions)
331 return -EINVAL;
332
333 region = &vdev->regions[index];
334
335 if (!(region->flags & VFIO_REGION_INFO_FLAG_READ))
336 return -EINVAL;
337
338 if (!region->ioaddr) {
339 region->ioaddr = ioremap(region->addr, region->size);
340 if (!region->ioaddr)
341 return -ENOMEM;
342 }
343
344 if (count != 64 || off != 0)
345 return -EINVAL;
346
347 for (i = 7; i >= 0; i--)
> 348 data[i] = readq(region->ioaddr + i * sizeof(uint64_t));
349
350 if (copy_to_user(buf, data, 64))
351 return -EFAULT;
352
353 return count;
354 }
355
356 #define MC_CMD_COMPLETION_TIMEOUT_MS 5000
357 #define MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS 500
358
359 static int vfio_fsl_mc_send_command(void __iomem *ioaddr, uint64_t *cmd_data)
360 {
361 int i;
362 enum mc_cmd_status status;
363 unsigned long timeout_usecs = MC_CMD_COMPLETION_TIMEOUT_MS * 1000;
364
365 /* Write at command parameter into portal */
366 for (i = 7; i >= 1; i--)
> 367 writeq_relaxed(cmd_data[i], ioaddr + i * sizeof(uint64_t));
368
369 /* Write command header in the end */
> 370 writeq(cmd_data[0], ioaddr);
371
372 /* Wait for response before returning to user-space
373 * This can be optimized in future to even prepare response
374 * before returning to user-space and avoid read ioctl.
375 */
376 for (;;) {
377 u64 header;
378 struct mc_cmd_header *resp_hdr;
379
> 380 header = cpu_to_le64(readq_relaxed(ioaddr));
381
382 resp_hdr = (struct mc_cmd_header *)&header;
383 status = (enum mc_cmd_status)resp_hdr->status;
384 if (status != MC_CMD_STATUS_READY)
385 break;
386
387 udelay(MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS);
388 timeout_usecs -= MC_CMD_COMPLETION_POLLING_MAX_SLEEP_USECS;
389 if (timeout_usecs == 0)
390 return -ETIMEDOUT;
391 }
392
393 return 0;
394 }
395
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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