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framebuffer: handle 64-bit PCI BARs

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Change-Id: I634f2a75fe80da99063b98a255d14953cd1a361f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4880
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
This commit is contained in:
Jérôme Duval 2022-01-22 17:12:09 +01:00 committed by waddlesplash
parent de65a7b6b3
commit 5f8b4d4d2e
1 changed files with 14 additions and 5 deletions
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19
src/add-ons/kernel/drivers/graphics/framebuffer/framebuffer.cpp
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@ -38,12 +38,20 @@ find_graphics_card(addr_t frameBuffer, addr_t& base, size_t& size)
// check PCI BARs
for (uint32 i = 0; i < 6; i++) {
if (info.u.h0.base_registers[i] <= frameBuffer
&& info.u.h0.base_registers[i] + info.u.h0.base_register_sizes[i]
> frameBuffer) {
phys_addr_t addr = info.u.h0.base_registers[i];
uint64 barSize = info.u.h0.base_register_sizes[i];
if (i < 5
&& (info.u.h0.base_register_flags[i] & PCI_address_type) == PCI_address_type_64) {
addr |= (uint64)info.u.h0.base_registers[i + 1] << 32;
barSize |= (uint64)info.u.h0.base_register_sizes[i + 1] << 32;
i++;
}
if (addr <= frameBuffer && addr + barSize > frameBuffer) {
// found it!
base = info.u.h0.base_registers[i];
size = info.u.h0.base_register_sizes[i];
base = addr;
size = barSize;
dprintf(DEVICE_NAME " find_graphics_card: found base 0x%lx size %" B_PRIuSIZE "\n",
base, size);
put_module(B_PCI_MODULE_NAME);
return B_OK;
@ -51,6 +59,7 @@ find_graphics_card(addr_t frameBuffer, addr_t& base, size_t& size)
}
}
dprintf(DEVICE_NAME " find_graphics_card: no entry found for 0x%lx\n", frameBuffer);
put_module(B_PCI_MODULE_NAME);
return B_ENTRY_NOT_FOUND;
}