drivers/mmc/host/dw_mmc.c:602:29: sparse: sparse: incorrect type in argument 1 (different address spaces)
From: kernel test robot
Date: Thu Jan 14 2021 - 06:35:59 EST
Hi Mike,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 65f0d2414b7079556fbbcc070b3d1c9f9587606d
commit: 3ed6751bb8fa89c3014399bb0414348499ee202a mips: fix build when "48 bits virtual memory" is enabled
date: 1 year, 2 months ago
config: mips-randconfig-s032-20210114 (attached as .config)
compiler: mips64el-linux-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-208-g46a52ca4-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3ed6751bb8fa89c3014399bb0414348499ee202a
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 3ed6751bb8fa89c3014399bb0414348499ee202a
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
"sparse warnings: (new ones prefixed by >>)"
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> drivers/mmc/host/dw_mmc.c:602:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *mem @@ got unsigned int * @@
drivers/mmc/host/dw_mmc.c:602:29: sparse: expected void const volatile [noderef] <asn:2> *mem
drivers/mmc/host/dw_mmc.c:602:29: sparse: got unsigned int *
>> drivers/mmc/host/dw_mmc.c:602:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *mem @@ got unsigned int * @@
drivers/mmc/host/dw_mmc.c:602:29: sparse: expected void const volatile [noderef] <asn:2> *mem
drivers/mmc/host/dw_mmc.c:602:29: sparse: got unsigned int *
drivers/mmc/host/dw_mmc.c:615:25: sparse: sparse: restricted __le32 degrades to integer
drivers/mmc/host/dw_mmc.c:615:25: sparse: sparse: restricted __le32 degrades to integer
>> drivers/mmc/host/dw_mmc.c:674:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *mem @@ got restricted __le32 * @@
drivers/mmc/host/dw_mmc.c:674:29: sparse: expected void const volatile [noderef] <asn:2> *mem
drivers/mmc/host/dw_mmc.c:674:29: sparse: got restricted __le32 *
drivers/mmc/host/dw_mmc.c:674:29: sparse: sparse: restricted __le32 degrades to integer
>> drivers/mmc/host/dw_mmc.c:674:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] <asn:2> *mem @@ got restricted __le32 * @@
drivers/mmc/host/dw_mmc.c:674:29: sparse: expected void const volatile [noderef] <asn:2> *mem
drivers/mmc/host/dw_mmc.c:674:29: sparse: got restricted __le32 *
drivers/mmc/host/dw_mmc.c:674:29: sparse: sparse: restricted __le32 degrades to integer
--
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> drivers/tty/serial/zs.c:988:26: sparse: sparse: Using plain integer as NULL pointer
>> drivers/tty/serial/zs.c:218:9: sparse: sparse: context imbalance in 'zs_spin_lock_cond_irq' - wrong count at exit
drivers/tty/serial/zs.c:227:32: sparse: sparse: context imbalance in 'zs_spin_unlock_cond_irq' - unexpected unlock
--
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> drivers/watchdog/mtx-1_wdt.c:185:27: sparse: sparse: incorrect type in initializer (incompatible argument 2 (different address spaces)) @@ expected long ( *write )( ... ) @@ got long ( * )( ... ) @@
drivers/watchdog/mtx-1_wdt.c:185:27: sparse: expected long ( *write )( ... )
drivers/watchdog/mtx-1_wdt.c:185:27: sparse: got long ( * )( ... )
--
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
drivers/watchdog/ar7_wdt.c:193:29: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected char const [noderef] <asn:1> *__gu_ptr @@ got char const * @@
drivers/watchdog/ar7_wdt.c:193:29: sparse: expected char const [noderef] <asn:1> *__gu_ptr
drivers/watchdog/ar7_wdt.c:193:29: sparse: got char const *
drivers/watchdog/ar7_wdt.c:216:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] <asn:1> *to @@ got struct watchdog_info * @@
drivers/watchdog/ar7_wdt.c:216:35: sparse: expected void [noderef] <asn:1> *to
drivers/watchdog/ar7_wdt.c:216:35: sparse: got struct watchdog_info *
drivers/watchdog/ar7_wdt.c:222:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int [noderef] <asn:1> *__pu_addr @@ got int * @@
drivers/watchdog/ar7_wdt.c:222:21: sparse: expected int [noderef] <asn:1> *__pu_addr
drivers/watchdog/ar7_wdt.c:222:21: sparse: got int *
drivers/watchdog/ar7_wdt.c:229:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int const [noderef] <asn:1> *__gu_ptr @@ got int * @@
drivers/watchdog/ar7_wdt.c:229:21: sparse: expected int const [noderef] <asn:1> *__gu_ptr
drivers/watchdog/ar7_wdt.c:229:21: sparse: got int *
drivers/watchdog/ar7_wdt.c:241:21: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int [noderef] <asn:1> *__pu_addr @@ got int * @@
drivers/watchdog/ar7_wdt.c:241:21: sparse: expected int [noderef] <asn:1> *__pu_addr
drivers/watchdog/ar7_wdt.c:241:21: sparse: got int *
>> drivers/watchdog/ar7_wdt.c:251:27: sparse: sparse: incorrect type in initializer (incompatible argument 2 (different address spaces)) @@ expected long ( *write )( ... ) @@ got long ( * )( ... ) @@
drivers/watchdog/ar7_wdt.c:251:27: sparse: expected long ( *write )( ... )
drivers/watchdog/ar7_wdt.c:251:27: sparse: got long ( * )( ... )
drivers/watchdog/ar7_wdt.c:270:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct ar7_wdt *static [toplevel] ar7_wdt @@ got void [noderef] <asn:2> * @@
drivers/watchdog/ar7_wdt.c:270:17: sparse: expected struct ar7_wdt *static [toplevel] ar7_wdt
drivers/watchdog/ar7_wdt.c:270:17: sparse: got void [noderef] <asn:2> *
--
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> drivers/video/fbdev/pmag-aa-fb.c:110:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt431_regs *regs @@ got struct bt431_regs [noderef] <asn:2> *bt431 @@
drivers/video/fbdev/pmag-aa-fb.c:110:39: sparse: expected struct bt431_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:110:39: sparse: got struct bt431_regs [noderef] <asn:2> *bt431
drivers/video/fbdev/pmag-aa-fb.c:115:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt431_regs *regs @@ got struct bt431_regs [noderef] <asn:2> *bt431 @@
drivers/video/fbdev/pmag-aa-fb.c:115:39: sparse: expected struct bt431_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:115:39: sparse: got struct bt431_regs [noderef] <asn:2> *bt431
drivers/video/fbdev/pmag-aa-fb.c:118:42: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt431_regs *regs @@ got struct bt431_regs [noderef] <asn:2> *bt431 @@
drivers/video/fbdev/pmag-aa-fb.c:118:42: sparse: expected struct bt431_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:118:42: sparse: got struct bt431_regs [noderef] <asn:2> *bt431
>> drivers/video/fbdev/pmag-aa-fb.c:124:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt455_regs *regs @@ got struct bt455_regs [noderef] <asn:2> *bt455 @@
drivers/video/fbdev/pmag-aa-fb.c:124:43: sparse: expected struct bt455_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:124:43: sparse: got struct bt455_regs [noderef] <asn:2> *bt455
drivers/video/fbdev/pmag-aa-fb.c:125:42: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt455_regs *regs @@ got struct bt455_regs [noderef] <asn:2> *bt455 @@
drivers/video/fbdev/pmag-aa-fb.c:125:42: sparse: expected struct bt455_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:125:42: sparse: got struct bt455_regs [noderef] <asn:2> *bt455
drivers/video/fbdev/pmag-aa-fb.c:126:42: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt455_regs *regs @@ got struct bt455_regs [noderef] <asn:2> *bt455 @@
drivers/video/fbdev/pmag-aa-fb.c:126:42: sparse: expected struct bt455_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:126:42: sparse: got struct bt455_regs [noderef] <asn:2> *bt455
drivers/video/fbdev/pmag-aa-fb.c:129:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt431_regs *regs @@ got struct bt431_regs [noderef] <asn:2> *bt431 @@
drivers/video/fbdev/pmag-aa-fb.c:129:37: sparse: expected struct bt431_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:129:37: sparse: got struct bt431_regs [noderef] <asn:2> *bt431
drivers/video/fbdev/pmag-aa-fb.c:134:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt431_regs *regs @@ got struct bt431_regs [noderef] <asn:2> *bt431 @@
drivers/video/fbdev/pmag-aa-fb.c:134:40: sparse: expected struct bt431_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:134:40: sparse: got struct bt431_regs [noderef] <asn:2> *bt431
drivers/video/fbdev/pmag-aa-fb.c:146:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt455_regs *regs @@ got struct bt455_regs [noderef] <asn:2> *bt455 @@
drivers/video/fbdev/pmag-aa-fb.c:146:35: sparse: expected struct bt455_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:146:35: sparse: got struct bt455_regs [noderef] <asn:2> *bt455
drivers/video/fbdev/pmag-aa-fb.c:212:35: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt455_regs *regs @@ got struct bt455_regs [noderef] <asn:2> *bt455 @@
drivers/video/fbdev/pmag-aa-fb.c:212:35: sparse: expected struct bt455_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:212:35: sparse: got struct bt455_regs [noderef] <asn:2> *bt455
drivers/video/fbdev/pmag-aa-fb.c:213:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt455_regs *regs @@ got struct bt455_regs [noderef] <asn:2> *bt455 @@
drivers/video/fbdev/pmag-aa-fb.c:213:34: sparse: expected struct bt455_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:213:34: sparse: got struct bt455_regs [noderef] <asn:2> *bt455
drivers/video/fbdev/pmag-aa-fb.c:216:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt431_regs *regs @@ got struct bt431_regs [noderef] <asn:2> *bt431 @@
drivers/video/fbdev/pmag-aa-fb.c:216:31: sparse: expected struct bt431_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:216:31: sparse: got struct bt431_regs [noderef] <asn:2> *bt431
drivers/video/fbdev/pmag-aa-fb.c:217:30: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct bt431_regs *regs @@ got struct bt431_regs [noderef] <asn:2> *bt431 @@
drivers/video/fbdev/pmag-aa-fb.c:217:30: sparse: expected struct bt431_regs *regs
drivers/video/fbdev/pmag-aa-fb.c:217:30: sparse: got struct bt431_regs [noderef] <asn:2> *bt431
--
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> arch/mips/dec/kn01-berr.c:104:34: sparse: sparse: cast removes address space '<asn:1>' of expression
--
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> arch/mips/dec/tc.c:32:16: sparse: sparse: cast removes address space '<asn:2>' of expression
>> arch/mips/dec/tc.c:32:16: sparse: sparse: cast removes address space '<asn:2>' of expression
>> arch/mips/dec/tc.c:32:16: sparse: sparse: cast removes address space '<asn:2>' of expression
>> arch/mips/dec/tc.c:32:16: sparse: sparse: cast removes address space '<asn:2>' of expression
--
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
arch/mips/kernel/kgdb.c:147:56: sparse: sparse: no member 'fpu' in struct thread_struct
>> arch/mips/kernel/kgdb.c:147:33: sparse: sparse: cast from unknown type
arch/mips/kernel/kgdb.c:155:48: sparse: sparse: no member 'fpu' in struct thread_struct
arch/mips/kernel/kgdb.c:155:25: sparse: sparse: cast from unknown type
arch/mips/kernel/kgdb.c:182:61: sparse: sparse: no member 'fpu' in struct thread_struct
arch/mips/kernel/kgdb.c:182:38: sparse: sparse: cast from unknown type
arch/mips/kernel/kgdb.c:191:53: sparse: sparse: no member 'fpu' in struct thread_struct
arch/mips/kernel/kgdb.c:191:30: sparse: sparse: cast from unknown type
vim +602 drivers/mmc/host/dw_mmc.c
3b2a067b98b45f7a Shawn Lin 2016-09-02 573
3b2a067b98b45f7a Shawn Lin 2016-09-02 574 static inline int dw_mci_prepare_desc64(struct dw_mci *host,
ec0baaa6b33932a2 Shawn Lin 2016-09-02 575 struct mmc_data *data,
f95f3850f7a9e1d4 Will Newton 2011-01-02 576 unsigned int sg_len)
f95f3850f7a9e1d4 Will Newton 2011-01-02 577 {
5959b32e3636f9bf Alexey Brodkin 2015-06-25 578 unsigned int desc_len;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 579 struct idmac_desc_64addr *desc_first, *desc_last, *desc;
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 580 u32 val;
ec0baaa6b33932a2 Shawn Lin 2016-09-02 581 int i;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 582
5959b32e3636f9bf Alexey Brodkin 2015-06-25 583 desc_first = desc_last = desc = host->sg_cpu;
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 584
5959b32e3636f9bf Alexey Brodkin 2015-06-25 585 for (i = 0; i < sg_len; i++) {
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 586 unsigned int length = sg_dma_len(&data->sg[i]);
0e3a22c044478b61 Shawn Lin 2015-08-03 587
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 588 u64 mem_addr = sg_dma_address(&data->sg[i]);
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 589
5959b32e3636f9bf Alexey Brodkin 2015-06-25 590 for ( ; length ; desc++) {
5959b32e3636f9bf Alexey Brodkin 2015-06-25 591 desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
5959b32e3636f9bf Alexey Brodkin 2015-06-25 592 length : DW_MCI_DESC_DATA_LENGTH;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 593
5959b32e3636f9bf Alexey Brodkin 2015-06-25 594 length -= desc_len;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 595
3b2a067b98b45f7a Shawn Lin 2016-09-02 596 /*
3b2a067b98b45f7a Shawn Lin 2016-09-02 597 * Wait for the former clear OWN bit operation
3b2a067b98b45f7a Shawn Lin 2016-09-02 598 * of IDMAC to make sure that this descriptor
3b2a067b98b45f7a Shawn Lin 2016-09-02 599 * isn't still owned by IDMAC as IDMAC's write
3b2a067b98b45f7a Shawn Lin 2016-09-02 600 * ops and CPU's read ops are asynchronous.
3b2a067b98b45f7a Shawn Lin 2016-09-02 601 */
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 @602 if (readl_poll_timeout_atomic(&desc->des0, val,
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 603 !(val & IDMAC_DES0_OWN),
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 604 10, 100 * USEC_PER_MSEC))
3b2a067b98b45f7a Shawn Lin 2016-09-02 605 goto err_own_bit;
3b2a067b98b45f7a Shawn Lin 2016-09-02 606
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 607 /*
5959b32e3636f9bf Alexey Brodkin 2015-06-25 608 * Set the OWN bit and disable interrupts
5959b32e3636f9bf Alexey Brodkin 2015-06-25 609 * for this descriptor
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 610 */
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 611 desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC |
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 612 IDMAC_DES0_CH;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 613
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 614 /* Buffer length */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 615 IDMAC_64ADDR_SET_BUFFER1_SIZE(desc, desc_len);
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 616
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 617 /* Physical address to DMA to/from */
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 618 desc->des4 = mem_addr & 0xffffffff;
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 619 desc->des5 = mem_addr >> 32;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 620
5959b32e3636f9bf Alexey Brodkin 2015-06-25 621 /* Update physical address for the next desc */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 622 mem_addr += desc_len;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 623
5959b32e3636f9bf Alexey Brodkin 2015-06-25 624 /* Save pointer to the last descriptor */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 625 desc_last = desc;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 626 }
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 627 }
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 628
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 629 /* Set first descriptor */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 630 desc_first->des0 |= IDMAC_DES0_FD;
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 631
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 632 /* Set last descriptor */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 633 desc_last->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
5959b32e3636f9bf Alexey Brodkin 2015-06-25 634 desc_last->des0 |= IDMAC_DES0_LD;
3b2a067b98b45f7a Shawn Lin 2016-09-02 635
3b2a067b98b45f7a Shawn Lin 2016-09-02 636 return 0;
3b2a067b98b45f7a Shawn Lin 2016-09-02 637 err_own_bit:
3b2a067b98b45f7a Shawn Lin 2016-09-02 638 /* restore the descriptor chain as it's polluted */
26be9d705f44521d Colin Ian King 2016-11-16 639 dev_dbg(host->dev, "descriptor is still owned by IDMAC.\n");
cc190d4c6499b1b3 Shawn Lin 2016-09-02 640 memset(host->sg_cpu, 0, DESC_RING_BUF_SZ);
3b2a067b98b45f7a Shawn Lin 2016-09-02 641 dw_mci_idmac_init(host);
3b2a067b98b45f7a Shawn Lin 2016-09-02 642 return -EINVAL;
ec0baaa6b33932a2 Shawn Lin 2016-09-02 643 }
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 644
ec0baaa6b33932a2 Shawn Lin 2016-09-02 645
3b2a067b98b45f7a Shawn Lin 2016-09-02 646 static inline int dw_mci_prepare_desc32(struct dw_mci *host,
ec0baaa6b33932a2 Shawn Lin 2016-09-02 647 struct mmc_data *data,
ec0baaa6b33932a2 Shawn Lin 2016-09-02 648 unsigned int sg_len)
ec0baaa6b33932a2 Shawn Lin 2016-09-02 649 {
ec0baaa6b33932a2 Shawn Lin 2016-09-02 650 unsigned int desc_len;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 651 struct idmac_desc *desc_first, *desc_last, *desc;
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 652 u32 val;
ec0baaa6b33932a2 Shawn Lin 2016-09-02 653 int i;
f95f3850f7a9e1d4 Will Newton 2011-01-02 654
5959b32e3636f9bf Alexey Brodkin 2015-06-25 655 desc_first = desc_last = desc = host->sg_cpu;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 656
5959b32e3636f9bf Alexey Brodkin 2015-06-25 657 for (i = 0; i < sg_len; i++) {
f95f3850f7a9e1d4 Will Newton 2011-01-02 658 unsigned int length = sg_dma_len(&data->sg[i]);
0e3a22c044478b61 Shawn Lin 2015-08-03 659
f95f3850f7a9e1d4 Will Newton 2011-01-02 660 u32 mem_addr = sg_dma_address(&data->sg[i]);
f95f3850f7a9e1d4 Will Newton 2011-01-02 661
5959b32e3636f9bf Alexey Brodkin 2015-06-25 662 for ( ; length ; desc++) {
5959b32e3636f9bf Alexey Brodkin 2015-06-25 663 desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
5959b32e3636f9bf Alexey Brodkin 2015-06-25 664 length : DW_MCI_DESC_DATA_LENGTH;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 665
5959b32e3636f9bf Alexey Brodkin 2015-06-25 666 length -= desc_len;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 667
3b2a067b98b45f7a Shawn Lin 2016-09-02 668 /*
3b2a067b98b45f7a Shawn Lin 2016-09-02 669 * Wait for the former clear OWN bit operation
3b2a067b98b45f7a Shawn Lin 2016-09-02 670 * of IDMAC to make sure that this descriptor
3b2a067b98b45f7a Shawn Lin 2016-09-02 671 * isn't still owned by IDMAC as IDMAC's write
3b2a067b98b45f7a Shawn Lin 2016-09-02 672 * ops and CPU's read ops are asynchronous.
3b2a067b98b45f7a Shawn Lin 2016-09-02 673 */
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 @674 if (readl_poll_timeout_atomic(&desc->des0, val,
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 675 IDMAC_OWN_CLR64(val),
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 676 10,
b6d2d81c5c2de6b3 Shawn Lin 2017-02-17 677 100 * USEC_PER_MSEC))
3b2a067b98b45f7a Shawn Lin 2016-09-02 678 goto err_own_bit;
3b2a067b98b45f7a Shawn Lin 2016-09-02 679
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 680 /*
5959b32e3636f9bf Alexey Brodkin 2015-06-25 681 * Set the OWN bit and disable interrupts
5959b32e3636f9bf Alexey Brodkin 2015-06-25 682 * for this descriptor
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 683 */
6687c42fa71acd6a Ben Dooks 2015-03-25 684 desc->des0 = cpu_to_le32(IDMAC_DES0_OWN |
5959b32e3636f9bf Alexey Brodkin 2015-06-25 685 IDMAC_DES0_DIC |
5959b32e3636f9bf Alexey Brodkin 2015-06-25 686 IDMAC_DES0_CH);
5959b32e3636f9bf Alexey Brodkin 2015-06-25 687
f95f3850f7a9e1d4 Will Newton 2011-01-02 688 /* Buffer length */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 689 IDMAC_SET_BUFFER1_SIZE(desc, desc_len);
f95f3850f7a9e1d4 Will Newton 2011-01-02 690
f95f3850f7a9e1d4 Will Newton 2011-01-02 691 /* Physical address to DMA to/from */
6687c42fa71acd6a Ben Dooks 2015-03-25 692 desc->des2 = cpu_to_le32(mem_addr);
5959b32e3636f9bf Alexey Brodkin 2015-06-25 693
5959b32e3636f9bf Alexey Brodkin 2015-06-25 694 /* Update physical address for the next desc */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 695 mem_addr += desc_len;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 696
5959b32e3636f9bf Alexey Brodkin 2015-06-25 697 /* Save pointer to the last descriptor */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 698 desc_last = desc;
5959b32e3636f9bf Alexey Brodkin 2015-06-25 699 }
f95f3850f7a9e1d4 Will Newton 2011-01-02 700 }
f95f3850f7a9e1d4 Will Newton 2011-01-02 701
f95f3850f7a9e1d4 Will Newton 2011-01-02 702 /* Set first descriptor */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 703 desc_first->des0 |= cpu_to_le32(IDMAC_DES0_FD);
f95f3850f7a9e1d4 Will Newton 2011-01-02 704
f95f3850f7a9e1d4 Will Newton 2011-01-02 705 /* Set last descriptor */
5959b32e3636f9bf Alexey Brodkin 2015-06-25 706 desc_last->des0 &= cpu_to_le32(~(IDMAC_DES0_CH |
5959b32e3636f9bf Alexey Brodkin 2015-06-25 707 IDMAC_DES0_DIC));
5959b32e3636f9bf Alexey Brodkin 2015-06-25 708 desc_last->des0 |= cpu_to_le32(IDMAC_DES0_LD);
3b2a067b98b45f7a Shawn Lin 2016-09-02 709
3b2a067b98b45f7a Shawn Lin 2016-09-02 710 return 0;
3b2a067b98b45f7a Shawn Lin 2016-09-02 711 err_own_bit:
3b2a067b98b45f7a Shawn Lin 2016-09-02 712 /* restore the descriptor chain as it's polluted */
26be9d705f44521d Colin Ian King 2016-11-16 713 dev_dbg(host->dev, "descriptor is still owned by IDMAC.\n");
cc190d4c6499b1b3 Shawn Lin 2016-09-02 714 memset(host->sg_cpu, 0, DESC_RING_BUF_SZ);
3b2a067b98b45f7a Shawn Lin 2016-09-02 715 dw_mci_idmac_init(host);
3b2a067b98b45f7a Shawn Lin 2016-09-02 716 return -EINVAL;
69d99fdcfd7815df Prabu Thangamuthu 2014-10-20 717 }
f95f3850f7a9e1d4 Will Newton 2011-01-02 718
:::::: The code at line 602 was first introduced by commit
:::::: b6d2d81c5c2de6b3c69da3be9b2044dd008dbe45 mmc: dw_mmc: improve the timeout polling code
:::::: TO: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
:::::: CC: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
---
0-DAY CI Kernel Test Service, Intel Corporation
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