mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-22 18:44:44 +08:00
568de506e3
The entries in the DMA translation tables for our IOMMU must specify physical addresses of either the next level table or the final page to be mapped for DMA. Currently however the code simply passes the virtual addresses of both. On the other hand we still need to walk the tables via their virtual addresses so we need to do a phys_to_virt() when setting the entries and a virt_to_phys() when getting them. Similarly when passing the I/O translation anchor to the hardware we must also specify its physical address. As the DMA and IOMMU APIs we are implementing already use the correct phys_addr_t type for the address to be mapped let's also thread this through instead of treating it as just an unsigned long. Note: this currently doesn't fix a real bug, since virtual addresses are indentical to physical ones. Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
||
|---|---|---|
| .. | ||
| Makefile | ||
| pci_bus.c | ||
| pci_bus.h | ||
| pci_clp.c | ||
| pci_debug.c | ||
| pci_dma.c | ||
| pci_event.c | ||
| pci_insn.c | ||
| pci_iov.c | ||
| pci_iov.h | ||
| pci_irq.c | ||
| pci_mmio.c | ||
| pci_sysfs.c | ||
| pci.c | ||