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Kernel: Add bar_address_mask to mask the last 4 bits of a BAR address

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Create a bar_address_mask constant to mask the last 4 bits of a BAR
address instead of hand coding the mask all over the kernel.
This commit is contained in:
Pankaj Raghav 2023-04-24 12:32:12 +02:00 • committed by Jelle Raaijmakers
parent 20d517f1da
commit 83b87a5ade
8 changed files with 14 additions and 15 deletions
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4
Kernel/Graphics/VMWare/GraphicsAdapter.cpp
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@ -69,7 +69,7 @@ UNMAP_AFTER_INIT ErrorOr<void> VMWareGraphicsAdapter::initialize_fifo_registers(
{
auto framebuffer_size = read_io_register(VMWareDisplayRegistersOffset::FB_SIZE);
auto fifo_size = read_io_register(VMWareDisplayRegistersOffset::MEM_SIZE);
auto fifo_physical_address = PhysicalAddress(PCI::get_BAR2(device_identifier()) & 0xfffffff0);
auto fifo_physical_address = PhysicalAddress(PCI::get_BAR2(device_identifier()) & PCI::bar_address_mask);
dbgln("VMWare SVGA @ {}: framebuffer size {} bytes, FIFO size {} bytes @ {}", device_identifier().address(), framebuffer_size, fifo_size, fifo_physical_address);
if (framebuffer_size < 0x100000 || fifo_size < 0x10000) {
@ -185,7 +185,7 @@ UNMAP_AFTER_INIT ErrorOr<void> VMWareGraphicsAdapter::initialize_adapter()
auto bar1_space_size = PCI::get_BAR_space_size(device_identifier(), PCI::HeaderType0BaseRegister::BAR1);
m_display_connector = VMWareDisplayConnector::must_create(*this, PhysicalAddress(PCI::get_BAR1(device_identifier()) & 0xfffffff0), bar1_space_size);
m_display_connector = VMWareDisplayConnector::must_create(*this, PhysicalAddress(PCI::get_BAR1(device_identifier()) & PCI::bar_address_mask), bar1_space_size);
TRY(m_display_connector->set_safe_mode_setting());
return {};
}