Re: [PATCH v5 8/8] drm/imagination: Enable PowerVR driver for RISC-V

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

Hi Michal,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 4774cfe3543abb8ee98089f535e28ebfd45b975a]

url:    https://github.com/intel-lab-lkp/linux/commits/Michal-Wilczynski/power-sequencing-Add-T-HEAD-TH1520-GPU-power-sequencer-driver/20250618-182429
base:   4774cfe3543abb8ee98089f535e28ebfd45b975a
patch link:    https://lore.kernel.org/r/20250618-apr_14_for_sending-v5-8-27ed33ea5c6f%40samsung.com
patch subject: [PATCH v5 8/8] drm/imagination: Enable PowerVR driver for RISC-V
config: sparc64-randconfig-r121-20250620 (https://download.01.org/0day-ci/archive/20250620/202506201103.GX6DA9Gx-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 8.5.0
reproduce: (https://download.01.org/0day-ci/archive/20250620/202506201103.GX6DA9Gx-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/oe-kbuild-all/202506201103.GX6DA9Gx-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/imagination/pvr_mmu.c:57:3: error: #error Unsupported device page size PVR_DEVICE_PAGE_SIZE
    # error Unsupported device page size PVR_DEVICE_PAGE_SIZE
      ^~~~~
   In file included from ./arch/sparc/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:390,
                    from include/linux/dev_printk.h:14,
                    from include/linux/device.h:15,
                    from include/linux/node.h:18,
                    from include/linux/memory.h:19,
                    from drivers/gpu/drm/imagination/pvr_mmu.h:7,
                    from drivers/gpu/drm/imagination/pvr_mmu.c:4:
   drivers/gpu/drm/imagination/pvr_mmu.c: In function 'pvr_page_table_l1_entry_raw_set':
   drivers/gpu/drm/imagination/pvr_mmu.c:577:50: error: 'ROGUE_MMUCTRL_PAGE_SIZE_X' undeclared (first use in this function); did you mean 'ROGUE_MMUCTRL_PAGE_SIZE_1MB'?
         PVR_PAGE_TABLE_FIELD_PREP(1, PD, PAGE_SIZE, ROGUE_MMUCTRL_PAGE_SIZE_X) |
                                                     ^~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:55:33: note: in definition of macro '__WRITE_ONCE'
     *(volatile typeof(x) *)&(x) = (val);    \
                                    ^~~
   drivers/gpu/drm/imagination/pvr_mmu.c:574:2: note: in expansion of macro 'WRITE_ONCE'
     WRITE_ONCE(entry->val,
     ^~~~~~~~~~
   drivers/gpu/drm/imagination/pvr_mmu.c:577:6: note: in expansion of macro 'PVR_PAGE_TABLE_FIELD_PREP'
         PVR_PAGE_TABLE_FIELD_PREP(1, PD, PAGE_SIZE, ROGUE_MMUCTRL_PAGE_SIZE_X) |
         ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/imagination/pvr_mmu.c:577:50: note: each undeclared identifier is reported only once for each function it appears in
         PVR_PAGE_TABLE_FIELD_PREP(1, PD, PAGE_SIZE, ROGUE_MMUCTRL_PAGE_SIZE_X) |
                                                     ^~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:55:33: note: in definition of macro '__WRITE_ONCE'
     *(volatile typeof(x) *)&(x) = (val);    \
                                    ^~~
   drivers/gpu/drm/imagination/pvr_mmu.c:574:2: note: in expansion of macro 'WRITE_ONCE'
     WRITE_ONCE(entry->val,
     ^~~~~~~~~~
   drivers/gpu/drm/imagination/pvr_mmu.c:577:6: note: in expansion of macro 'PVR_PAGE_TABLE_FIELD_PREP'
         PVR_PAGE_TABLE_FIELD_PREP(1, PD, PAGE_SIZE, ROGUE_MMUCTRL_PAGE_SIZE_X) |
         ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/gpu/drm/imagination/pvr_mmu.c: In function 'pvr_page_table_l0_entry_raw_set':
   drivers/gpu/drm/imagination/pvr_mmu.c:741:24: error: 'ROGUE_MMUCTRL_PAGE_X_RANGE_CLRMSK' undeclared (first use in this function); did you mean 'ROGUE_MMUCTRL_PAGE_1MB_RANGE_CLRMSK'?
              (dma_addr & ~ROGUE_MMUCTRL_PAGE_X_RANGE_CLRMSK) |
                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:55:33: note: in definition of macro '__WRITE_ONCE'
     *(volatile typeof(x) *)&(x) = (val);    \
                                    ^~~
   drivers/gpu/drm/imagination/pvr_mmu.c:739:2: note: in expansion of macro 'WRITE_ONCE'
     WRITE_ONCE(entry->val, PVR_PAGE_TABLE_FIELD_PREP(0, PT, VALID, true) |
     ^~~~~~~~~~
   drivers/gpu/drm/imagination/pvr_mmu.c: In function 'pvr_page_table_l0_idx':
   drivers/gpu/drm/imagination/pvr_mmu.c:1713:9: error: 'ROGUE_MMUCTRL_PAGE_X_RANGE_SHIFT' undeclared (first use in this function); did you mean 'ROGUE_MMUCTRL_PAGE_4KB_RANGE_SHIFT'?
            ROGUE_MMUCTRL_PAGE_X_RANGE_SHIFT;
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            ROGUE_MMUCTRL_PAGE_4KB_RANGE_SHIFT
>> drivers/gpu/drm/imagination/pvr_mmu.c:1714:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^


vim +1714 drivers/gpu/drm/imagination/pvr_mmu.c

ff5f643de0bf27 Donald Robson 2023-11-22  1696  
ff5f643de0bf27 Donald Robson 2023-11-22  1697  /**
ff5f643de0bf27 Donald Robson 2023-11-22  1698   * pvr_page_table_l0_idx() - Calculate the level 0 page table index for a
ff5f643de0bf27 Donald Robson 2023-11-22  1699   *                           device-virtual address.
ff5f643de0bf27 Donald Robson 2023-11-22  1700   * @device_addr: Target device-virtual address.
ff5f643de0bf27 Donald Robson 2023-11-22  1701   *
ff5f643de0bf27 Donald Robson 2023-11-22  1702   * This function does not perform any bounds checking - it is the caller's
ff5f643de0bf27 Donald Robson 2023-11-22  1703   * responsibility to ensure that @device_addr is valid before interpreting
ff5f643de0bf27 Donald Robson 2023-11-22  1704   * the result.
ff5f643de0bf27 Donald Robson 2023-11-22  1705   *
ff5f643de0bf27 Donald Robson 2023-11-22  1706   * Return:
ff5f643de0bf27 Donald Robson 2023-11-22  1707   * The index into a level 0 page table corresponding to @device_addr.
ff5f643de0bf27 Donald Robson 2023-11-22  1708   */
ff5f643de0bf27 Donald Robson 2023-11-22  1709  static u16
ff5f643de0bf27 Donald Robson 2023-11-22  1710  pvr_page_table_l0_idx(u64 device_addr)
ff5f643de0bf27 Donald Robson 2023-11-22  1711  {
ff5f643de0bf27 Donald Robson 2023-11-22  1712  	return (device_addr & ~ROGUE_MMUCTRL_VADDR_PT_INDEX_CLRMSK) >>
ff5f643de0bf27 Donald Robson 2023-11-22  1713  	       ROGUE_MMUCTRL_PAGE_X_RANGE_SHIFT;
ff5f643de0bf27 Donald Robson 2023-11-22 @1714  }
ff5f643de0bf27 Donald Robson 2023-11-22  1715  

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