[PATCH v2 03/11] drm/fbdev: Select fbdev I/O helpers from modules that require them
kernel test robot
lkp at intel.com
Fri Oct 4 18:29:32 UTC 2024
Hi Thomas,
kernel test robot noticed the following build errors:
[auto build test ERROR on next-20241002]
[also build test ERROR on v6.12-rc1]
[cannot apply to drm-xe/drm-xe-next drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-misc/drm-misc-next drm-tip/drm-tip linus/master v6.12-rc1 v6.11 v6.11-rc7]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Thomas-Zimmermann/drm-i915-Select-DRM_CLIENT_SELECTION/20241002-211520
base: next-20241002
patch link: https://lore.kernel.org/r/20241002131306.288618-4-tzimmermann%40suse.de
patch subject: [PATCH v2 03/11] drm/fbdev: Select fbdev I/O helpers from modules that require them
config: arm-aspeed_g5_defconfig (https://download.01.org/0day-ci/archive/20241005/202410050241.Mox9QRjP-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241005/202410050241.Mox9QRjP-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410050241.Mox9QRjP-lkp@intel.com/
All errors (new ones prefixed by >>):
drivers/gpu/drm/drm_fbdev_dma.c: In function 'drm_fbdev_dma_driver_fbdev_probe':
>> drivers/gpu/drm/drm_fbdev_dma.c:218:26: error: 'struct drm_fb_helper' has no member named 'fbdefio'
218 | fb_helper->fbdefio.delay = HZ / 20;
| ^~
drivers/gpu/drm/drm_fbdev_dma.c:219:26: error: 'struct drm_fb_helper' has no member named 'fbdefio'
219 | fb_helper->fbdefio.deferred_io = drm_fb_helper_deferred_io;
| ^~
>> drivers/gpu/drm/drm_fbdev_dma.c:221:21: error: 'struct fb_info' has no member named 'fbdefio'
221 | info->fbdefio = &fb_helper->fbdefio;
| ^~
drivers/gpu/drm/drm_fbdev_dma.c:221:43: error: 'struct drm_fb_helper' has no member named 'fbdefio'
221 | info->fbdefio = &fb_helper->fbdefio;
| ^~
--
In file included from include/linux/bitfield.h:10,
from arch/arm/include/asm/ptrace.h:13,
from arch/arm/include/asm/processor.h:14,
from include/linux/prefetch.h:15,
from arch/arm/include/asm/atomic.h:12,
from include/linux/atomic.h:7,
from include/linux/console.h:17,
from drivers/gpu/drm/drm_fb_helper.c:32:
drivers/gpu/drm/drm_fb_helper.c: In function 'drm_fb_helper_deferred_io':
>> include/linux/container_of.h:20:54: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~
include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:612:9: note: in expansion of macro 'list_entry'
612 | list_entry((ptr)->next, type, member)
| ^~~~~~~~~~
include/linux/list.h:778:20: note: in expansion of macro 'list_first_entry'
778 | for (pos = list_first_entry(head, typeof(*pos), member); \
| ^~~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:458:27: error: expression in static assertion is not an integer
458 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:612:9: note: in expansion of macro 'list_entry'
612 | list_entry((ptr)->next, type, member)
| ^~~~~~~~~~
include/linux/list.h:778:20: note: in expansion of macro 'list_first_entry'
778 | for (pos = list_first_entry(head, typeof(*pos), member); \
| ^~~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
In file included from include/uapi/linux/posix_types.h:5,
from include/uapi/linux/types.h:14,
from include/linux/types.h:6,
from include/linux/atomic.h:5:
>> include/linux/stddef.h:16:33: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
16 | #define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER)
| ^~~~~~~~~~~~~~~~~~
include/linux/container_of.h:23:28: note: in expansion of macro 'offsetof'
23 | ((type *)(__mptr - offsetof(type, member))); })
| ^~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:612:9: note: in expansion of macro 'list_entry'
612 | list_entry((ptr)->next, type, member)
| ^~~~~~~~~~
include/linux/list.h:778:20: note: in expansion of macro 'list_first_entry'
778 | for (pos = list_first_entry(head, typeof(*pos), member); \
| ^~~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
In file included from arch/arm/include/asm/traps.h:6,
from arch/arm/include/asm/thread_info.h:43,
from include/linux/thread_info.h:60,
from include/asm-generic/preempt.h:5,
from ./arch/arm/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/rcupdate.h:27,
from include/linux/rcuwait.h:5,
from include/linux/irq_work.h:6,
from include/linux/console.h:19:
>> include/linux/list.h:769:26: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
769 | list_is_head(&pos->member, (head))
| ^~
include/linux/list.h:779:15: note: in expansion of macro 'list_entry_is_head'
779 | !list_entry_is_head(pos, head, member); \
| ^~~~~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
In file included from include/linux/llist.h:52,
from include/linux/smp_types.h:5,
from include/linux/irq_work.h:5:
include/linux/list.h:645:25: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~
include/linux/container_of.h:19:33: note: in definition of macro 'container_of'
19 | void *__mptr = (void *)(ptr); \
| ^~~
include/linux/list.h:645:9: note: in expansion of macro 'list_entry'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
include/linux/list.h:780:20: note: in expansion of macro 'list_next_entry'
780 | pos = list_next_entry(pos, member))
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
include/linux/list.h:645:25: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~
include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:645:9: note: in expansion of macro 'list_entry'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
include/linux/list.h:780:20: note: in expansion of macro 'list_next_entry'
780 | pos = list_next_entry(pos, member))
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
>> include/linux/container_of.h:20:54: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~
include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:645:9: note: in expansion of macro 'list_entry'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
include/linux/list.h:780:20: note: in expansion of macro 'list_next_entry'
780 | pos = list_next_entry(pos, member))
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
include/linux/list.h:645:25: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~
include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:21:23: note: in expansion of macro '__same_type'
21 | __same_type(*(ptr), void), \
| ^~~~~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:645:9: note: in expansion of macro 'list_entry'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
include/linux/list.h:780:20: note: in expansion of macro 'list_next_entry'
780 | pos = list_next_entry(pos, member))
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:458:27: error: expression in static assertion is not an integer
458 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:78:56: note: in definition of macro '__static_assert'
78 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), ((type *)0)->member) || \
| ^~~~~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:645:9: note: in expansion of macro 'list_entry'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
include/linux/list.h:780:20: note: in expansion of macro 'list_next_entry'
780 | pos = list_next_entry(pos, member))
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
>> include/linux/stddef.h:16:33: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
16 | #define offsetof(TYPE, MEMBER) __builtin_offsetof(TYPE, MEMBER)
| ^~~~~~~~~~~~~~~~~~
include/linux/container_of.h:23:28: note: in expansion of macro 'offsetof'
23 | ((type *)(__mptr - offsetof(type, member))); })
| ^~~~~~~~
include/linux/list.h:601:9: note: in expansion of macro 'container_of'
601 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
include/linux/list.h:645:9: note: in expansion of macro 'list_entry'
645 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
include/linux/list.h:780:20: note: in expansion of macro 'list_next_entry'
780 | pos = list_next_entry(pos, member))
| ^~~~~~~~~~~~~~~
drivers/gpu/drm/drm_fb_helper.c:717:9: note: in expansion of macro 'list_for_each_entry'
717 | list_for_each_entry(pageref, pagereflist, list) {
| ^~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/drm_fb_helper.c:718:32: error: invalid use of undefined type 'struct fb_deferred_io_pageref'
718 | start = pageref->offset;
| ^~
vim +218 drivers/gpu/drm/drm_fbdev_dma.c
8998eedda2539d Thomas Zimmermann 2024-09-24 125
8998eedda2539d Thomas Zimmermann 2024-09-24 126 /*
8998eedda2539d Thomas Zimmermann 2024-09-24 127 * struct drm_fb_helper
8998eedda2539d Thomas Zimmermann 2024-09-24 128 */
8998eedda2539d Thomas Zimmermann 2024-09-24 129
8998eedda2539d Thomas Zimmermann 2024-09-24 130 int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper,
8998eedda2539d Thomas Zimmermann 2024-09-24 131 struct drm_fb_helper_surface_size *sizes)
b79fe9abd58bab Thomas Zimmermann 2023-03-13 132 {
b79fe9abd58bab Thomas Zimmermann 2023-03-13 133 struct drm_client_dev *client = &fb_helper->client;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 134 struct drm_device *dev = fb_helper->dev;
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 135 bool use_deferred_io = false;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 136 struct drm_client_buffer *buffer;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 137 struct drm_gem_dma_object *dma_obj;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 138 struct drm_framebuffer *fb;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 139 struct fb_info *info;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 140 u32 format;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 141 struct iosys_map map;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 142 int ret;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 143
b79fe9abd58bab Thomas Zimmermann 2023-03-13 144 drm_dbg_kms(dev, "surface width(%d), height(%d) and bpp(%d)\n",
b79fe9abd58bab Thomas Zimmermann 2023-03-13 145 sizes->surface_width, sizes->surface_height,
b79fe9abd58bab Thomas Zimmermann 2023-03-13 146 sizes->surface_bpp);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 147
cb31c58e8c294f Thomas Huth 2024-07-02 148 format = drm_driver_legacy_fb_format(dev, sizes->surface_bpp,
cb31c58e8c294f Thomas Huth 2024-07-02 149 sizes->surface_depth);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 150 buffer = drm_client_framebuffer_create(client, sizes->surface_width,
b79fe9abd58bab Thomas Zimmermann 2023-03-13 151 sizes->surface_height, format);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 152 if (IS_ERR(buffer))
b79fe9abd58bab Thomas Zimmermann 2023-03-13 153 return PTR_ERR(buffer);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 154 dma_obj = to_drm_gem_dma_obj(buffer->gem);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 155
b79fe9abd58bab Thomas Zimmermann 2023-03-13 156 fb = buffer->fb;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 157
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 158 /*
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 159 * Deferred I/O requires struct page for framebuffer memory,
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 160 * which is not guaranteed for all DMA ranges. We thus only
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 161 * install deferred I/O if we have a framebuffer that requires
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 162 * it.
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 163 */
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 164 if (fb->funcs->dirty)
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 165 use_deferred_io = true;
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 166
b79fe9abd58bab Thomas Zimmermann 2023-03-13 167 ret = drm_client_buffer_vmap(buffer, &map);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 168 if (ret) {
b79fe9abd58bab Thomas Zimmermann 2023-03-13 169 goto err_drm_client_buffer_delete;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 170 } else if (drm_WARN_ON(dev, map.is_iomem)) {
b79fe9abd58bab Thomas Zimmermann 2023-03-13 171 ret = -ENODEV; /* I/O memory not supported; use generic emulation */
b79fe9abd58bab Thomas Zimmermann 2023-03-13 172 goto err_drm_client_buffer_delete;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 173 }
b79fe9abd58bab Thomas Zimmermann 2023-03-13 174
8998eedda2539d Thomas Zimmermann 2024-09-24 175 fb_helper->funcs = &drm_fbdev_dma_helper_funcs;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 176 fb_helper->buffer = buffer;
808a40b6946804 Thomas Zimmermann 2024-04-19 177 fb_helper->fb = fb;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 178
b79fe9abd58bab Thomas Zimmermann 2023-03-13 179 info = drm_fb_helper_alloc_info(fb_helper);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 180 if (IS_ERR(info)) {
b79fe9abd58bab Thomas Zimmermann 2023-03-13 181 ret = PTR_ERR(info);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 182 goto err_drm_client_buffer_vunmap;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 183 }
b79fe9abd58bab Thomas Zimmermann 2023-03-13 184
b79fe9abd58bab Thomas Zimmermann 2023-03-13 185 drm_fb_helper_fill_info(info, fb_helper, sizes);
b79fe9abd58bab Thomas Zimmermann 2023-03-13 186
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 187 if (use_deferred_io)
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 188 info->fbops = &drm_fbdev_dma_deferred_fb_ops;
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 189 else
b79fe9abd58bab Thomas Zimmermann 2023-03-13 190 info->fbops = &drm_fbdev_dma_fb_ops;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 191
b79fe9abd58bab Thomas Zimmermann 2023-03-13 192 /* screen */
b79fe9abd58bab Thomas Zimmermann 2023-03-13 193 info->flags |= FBINFO_VIRTFB; /* system memory */
b79fe9abd58bab Thomas Zimmermann 2023-03-13 194 if (dma_obj->map_noncoherent)
b79fe9abd58bab Thomas Zimmermann 2023-03-13 195 info->flags |= FBINFO_READS_FAST; /* signal caching */
b79fe9abd58bab Thomas Zimmermann 2023-03-13 196 info->screen_size = sizes->surface_height * fb->pitches[0];
b79fe9abd58bab Thomas Zimmermann 2023-03-13 197 info->screen_buffer = map.vaddr;
d92a7580392ad4 Thomas Zimmermann 2024-06-17 198 if (!(info->flags & FBINFO_HIDE_SMEM_START)) {
d92a7580392ad4 Thomas Zimmermann 2024-06-17 199 if (!drm_WARN_ON(dev, is_vmalloc_addr(info->screen_buffer)))
b79fe9abd58bab Thomas Zimmermann 2023-03-13 200 info->fix.smem_start = page_to_phys(virt_to_page(info->screen_buffer));
d92a7580392ad4 Thomas Zimmermann 2024-06-17 201 }
a51c7663f14460 Thomas Zimmermann 2023-03-20 202 info->fix.smem_len = info->screen_size;
b79fe9abd58bab Thomas Zimmermann 2023-03-13 203
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 204 /*
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 205 * Only set up deferred I/O if the screen buffer supports
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 206 * it. If this disagrees with the previous test for ->dirty,
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 207 * mmap on the /dev/fb file might not work correctly.
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 208 */
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 209 if (!is_vmalloc_addr(info->screen_buffer) && info->fix.smem_start) {
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 210 unsigned long pfn = info->fix.smem_start >> PAGE_SHIFT;
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 211
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 212 if (drm_WARN_ON(dev, !pfn_to_page(pfn)))
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 213 use_deferred_io = false;
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 214 }
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 215
808a40b6946804 Thomas Zimmermann 2024-04-19 216 /* deferred I/O */
5a498d4d06d6d9 Thomas Zimmermann 2024-09-04 217 if (use_deferred_io) {
808a40b6946804 Thomas Zimmermann 2024-04-19 @218 fb_helper->fbdefio.delay = HZ / 20;
808a40b6946804 Thomas Zimmermann 2024-04-19 219 fb_helper->fbdefio.deferred_io = drm_fb_helper_deferred_io;
808a40b6946804 Thomas Zimmermann 2024-04-19 220
808a40b6946804 Thomas Zimmermann 2024-04-19 @221 info->fbdefio = &fb_helper->fbdefio;
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