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radeon_hd: Ensure userspace accesses the AtomBIOS rom is R/W

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* We should only need R/O in theory, but AtomBIOS has issues with R/O
  for some reason that needs investigated (#19348)
* For now, we keep it R/W to userspace so radeon_hd doesn't break after
  33c3179

Change-Id: Id50c8916690e6068c94fc496bbe89e80d7ba1bf8
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8817
Reviewed-by: Alexander von Gluck <[email protected]>
Reviewed-by: waddlesplash <[email protected]>
Tested-by: Commit checker robot <[email protected]>
This commit is contained in:
Alexander von Gluck
2025-01-10 03:38:07 +00:00
committed by waddlesplash
parent 9eae4e9bd4
commit f1ea2e7ad4
2 changed files with 7 additions and 4 deletions
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src/add-ons/accelerants/radeon_hd/accelerant.cpp
+1
View File
@@ -139,6 +139,7 @@ init_common(int device, bool isClone)
return status;
}
// XXX: We *should* only need B_READ_AREA here, but AtomBIOS calls fail with it RO #19348
gInfo->rom_area = clone_area("radeon hd AtomBIOS",
(void**)&gInfo->rom, B_ANY_ADDRESS, B_READ_AREA | B_WRITE_AREA,
gInfo->shared_info->rom_area);
src/add-ons/kernel/drivers/graphics/radeon_hd/radeon_hd.cpp
+6 -4
View File
@@ -115,8 +115,9 @@ mapAtomBIOSACPI(radeon_info &info, uint32& romSize)
|| !memcmp(&info.atom_buffer[romHeader + 4], "MOTA", 4);
if (romValid == true) {
set_area_protection(info.rom_area,
B_KERNEL_READ_AREA | B_CLONEABLE_AREA);
// XXX: We should only KERNEL_READ_AREA + CLONE here, but AtomBIOS calls fail w/RO #19348
//set_area_protection(info.rom_area,
// B_KERNEL_READ_AREA | B_CLONEABLE_AREA);
ERROR("%s: AtomBIOS verified and locked (%" B_PRIu32 ")\n", __func__, romSize);
} else
ERROR("%s: AtomBIOS memcpy failed!\n", __func__);
@@ -227,8 +228,9 @@ mapAtomBIOS(radeon_info &info, phys_addr_t romBase, uint32 romSize,
|| !memcmp(&info.atom_buffer[romHeader + 4], "MOTA", 4);
if (romValid == true) {
set_area_protection(info.rom_area,
B_KERNEL_READ_AREA | B_CLONEABLE_AREA);
// XXX: We should only KERNEL_READ_AREA + CLONE here, but AtomBIOS calls fail w/RO #19348
//set_area_protection(info.rom_area,
// B_KERNEL_READ_AREA | B_CLONEABLE_AREA);
ERROR("%s: AtomBIOS verified and locked (%" B_PRIu32 ")\n", __func__, romSize);
} else
ERROR("%s: AtomBIOS memcpy failed!\n", __func__);