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nvme_disk: Improve nvme_pcicfg_map_bar logic.

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The 64-bit address accounting that was added used a hardcoded bar of 0,
which is not what we want here, so use the correct offsets instead.
Also account for sizes, too.
This commit is contained in:
Augustin Cavalier
2021-10-18 16:32:32 -04:00
parent 8f5199f019
commit f7179d9f41
1 changed files with 7 additions and 8 deletions
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src/add-ons/kernel/drivers/disk/nvme/compat/libnvme_haiku.cpp
+7 -8
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@@ -129,16 +129,15 @@ nvme_pcicfg_map_bar(void* devhandle, unsigned int bar, bool read_only,
struct pci_device* dev = (struct pci_device*)devhandle;
pci_info* info = (pci_info*)dev->pci_info;
uint64 addr = info->u.h0.base_registers[bar];
if ((info->u.h0.base_register_flags[0] & PCI_address_type)
== PCI_address_type_64) {
addr |= (uint64)info->u.h0.base_registers[1] << 32;
phys_addr_t addr = info->u.h0.base_registers[bar];
uint64 size = info->u.h0.base_register_sizes[bar];
if ((info->u.h0.base_register_flags[bar] & PCI_address_type) == PCI_address_type_64) {
addr |= (uint64)info->u.h0.base_registers[bar + 1] << 32;
size |= (uint64)info->u.h0.base_register_sizes[bar + 1] << 32;
}
uint32 size = info->u.h0.base_register_sizes[bar];
area_id area = map_physical_memory("nvme mapped bar", (phys_addr_t)addr,
size, B_ANY_KERNEL_ADDRESS,
B_KERNEL_READ_AREA | (read_only ? 0 : B_KERNEL_WRITE_AREA),
area_id area = map_physical_memory("nvme mapped bar", addr, size,
B_ANY_KERNEL_ADDRESS, B_KERNEL_READ_AREA | (read_only ? 0 : B_KERNEL_WRITE_AREA),
mapped_addr);
if (area < B_OK)
return area;