[fustini:b4/ssqosid-cbqri 12/24] arch/riscv/kernel/qos/qos_resctrl.c:296:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

Hi Drew,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/fustini/linux.git b4/ssqosid-cbqri
head:   9cef75501dd0366444c60c3ca47bf75270f2160a
commit: b3bca12466ffbbabc21d40cf1713b1e88dcfef64 [12/24] RISC-V: QoS: add to build when CONFIG_RISCV_ISA_SSQOSID set
:::::: branch date: 3 days ago
:::::: commit date: 3 weeks ago
config: riscv-randconfig-001-20251211 (https://download.01.org/0day-ci/archive/20251211/202512110615.SGIChFQT-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 6ec8c4351cfc1d0627d1633b02ea787bd29c77d8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512110615.SGIChFQT-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202512110615.SGIChFQT-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/riscv/kernel/qos/qos_resctrl.c:296:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     296 |                 reg = ioread64(ctrl->base + reg_offset);
         |                       ^
>> arch/riscv/kernel/qos/qos_resctrl.c:299:3: error: call to undeclared function 'iowrite64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     299 |                 iowrite64(reg, ctrl->base + reg_offset);
         |                 ^
   arch/riscv/kernel/qos/qos_resctrl.c:311:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     311 |                 reg = ioread64(ctrl->base + reg_offset);
         |                       ^
   arch/riscv/kernel/qos/qos_resctrl.c:313:3: error: call to undeclared function 'iowrite64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     313 |                 iowrite64(reg, ctrl->base + reg_offset);
         |                 ^
   arch/riscv/kernel/qos/qos_resctrl.c:323:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     323 |                 reg = ioread64(ctrl->base + reg_offset);
         |                       ^
   arch/riscv/kernel/qos/qos_resctrl.c:337:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     337 |                 reg = ioread64(ctrl->base + reg_offset);
         |                       ^
   arch/riscv/kernel/qos/qos_resctrl.c:356:8: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     356 |         reg = ioread64(ctrl->base + reg_offset);
         |               ^
   arch/riscv/kernel/qos/qos_resctrl.c:386:2: error: call to undeclared function 'iowrite64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     386 |         iowrite64(reg, ctrl->base + reg_offset);
         |         ^
   arch/riscv/kernel/qos/qos_resctrl.c:411:8: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     411 |         reg = ioread64(ctrl->base + reg_offset);
         |               ^
   arch/riscv/kernel/qos/qos_resctrl.c:418:2: error: call to undeclared function 'iowrite64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     418 |         iowrite64(reg, ctrl->base + reg_offset);
         |         ^
   arch/riscv/kernel/qos/qos_resctrl.c:522:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     522 |                 reg = ioread64(ctrl->base + reg_offset);
         |                       ^
   arch/riscv/kernel/qos/qos_resctrl.c:612:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     612 |                 reg = ioread64(ctrl->base + reg_offset);
         |                       ^
   arch/riscv/kernel/qos/qos_resctrl.c:648:8: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     648 |         reg = ioread64(ctrl->base + reg_offset);
         |               ^
   arch/riscv/kernel/qos/qos_resctrl.c:654:2: error: call to undeclared function 'iowrite64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     654 |         iowrite64(reg, ctrl->base + reg_offset);
         |         ^
   arch/riscv/kernel/qos/qos_resctrl.c:742:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     742 |                 reg = ioread64(ctrl->base + CBQRI_CC_CAPABILITIES_OFF);
         |                       ^
   arch/riscv/kernel/qos/qos_resctrl.c:826:9: error: call to undeclared function 'ioread64'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     826 |                 reg = ioread64(ctrl->base + CBQRI_BC_CAPABILITIES_OFF);
         |                       ^
   16 errors generated.


vim +/ioread64 +296 arch/riscv/kernel/qos/qos_resctrl.c

291c1b985f85fd Drew Fustini 2023-04-19  288  
291c1b985f85fd Drew Fustini 2023-04-19  289  /* Set capacity block mask (cc_block_mask) */
291c1b985f85fd Drew Fustini 2023-04-19  290  static void cbqri_set_cbm(struct cbqri_controller *ctrl, u64 cbm)
291c1b985f85fd Drew Fustini 2023-04-19  291  {
291c1b985f85fd Drew Fustini 2023-04-19  292  		int reg_offset;
291c1b985f85fd Drew Fustini 2023-04-19  293  		u64 reg;
291c1b985f85fd Drew Fustini 2023-04-19  294  
291c1b985f85fd Drew Fustini 2023-04-19  295  		reg_offset = CBQRI_CC_BLOCK_MASK_OFF;
291c1b985f85fd Drew Fustini 2023-04-19 @296  		reg = ioread64(ctrl->base + reg_offset);
291c1b985f85fd Drew Fustini 2023-04-19  297  
291c1b985f85fd Drew Fustini 2023-04-19  298  		reg = cbm;
291c1b985f85fd Drew Fustini 2023-04-19 @299  		iowrite64(reg, ctrl->base + reg_offset);
291c1b985f85fd Drew Fustini 2023-04-19  300  
291c1b985f85fd Drew Fustini 2023-04-19  301  		reg = ioread64(ctrl->base + reg_offset);
291c1b985f85fd Drew Fustini 2023-04-19  302  }
291c1b985f85fd Drew Fustini 2023-04-19  303  

:::::: The code at line 296 was first introduced by commit
:::::: 291c1b985f85fdb7d7ec4b8ef3996b518145db12 RISC-V: QoS: add resctrl interface for CBQRI controllers

:::::: TO: Drew Fustini <fustini@kernel.org>
:::::: CC: Drew Fustini <fustini@kernel.org>

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