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| author | Sergei Shtylyov <sshtylyov@ru.mvista.com> | 2008-04-18 23:39:03 +0400 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-04-24 18:09:52 +0400 |
| commit | 8911c9e3343c647b59727b47b10feca7ee9ac9c3 (patch) | |
| tree | af0aff3b05bf448e7b8189a44d8f9aa7502b1e16 /drivers/scsi/aic7xxx/aic79xx_osm_pci.c | |
| parent | 448504130f18bc9d8d10ba045775c906abd01438 (diff) | |
| download | linux-8911c9e3343c647b59727b47b10feca7ee9ac9c3.tar.xz | |
[SCSI] aic79xx: fix MMIO for PPC 44x platforms
The driver stores the PCI resource address into 'u_long' variable before
calling ioremap_nocache() on it. This warrants kernel oops when the registers
are accessed on PPC 44x platforms which (being 32-bit) have PCI memory space
mapped beyond 4 GB.
The arch/ppc/ kernel has a fixup in ioremap() that helps create an illusion
that the PCI memory resources are mapped below 4 GB, but arch/powerpc/ code
got rid of this trick, having instead CONFIG_RESOURCES_64BIT enabled.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/aic7xxx/aic79xx_osm_pci.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic79xx_osm_pci.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c index dfaaae5e73ae..9e0d7bdc889e 100644 --- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c +++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c @@ -249,8 +249,8 @@ ahd_linux_pci_exit(void) } static int -ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, u_long *base, - u_long *base2) +ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, resource_size_t *base, + resource_size_t *base2) { *base = pci_resource_start(ahd->dev_softc, 0); /* @@ -272,11 +272,11 @@ ahd_linux_pci_reserve_io_regions(struct ahd_softc *ahd, u_long *base, static int ahd_linux_pci_reserve_mem_region(struct ahd_softc *ahd, - u_long *bus_addr, + resource_size_t *bus_addr, uint8_t __iomem **maddr) { - u_long start; - u_long base_page; + resource_size_t start; + resource_size_t base_page; u_long base_offset; int error = 0; @@ -310,7 +310,7 @@ int ahd_pci_map_registers(struct ahd_softc *ahd) { uint32_t command; - u_long base; + resource_size_t base; uint8_t __iomem *maddr; int error; @@ -346,31 +346,32 @@ ahd_pci_map_registers(struct ahd_softc *ahd) } else command |= PCIM_CMD_MEMEN; } else if (bootverbose) { - printf("aic79xx: PCI%d:%d:%d MEM region 0x%lx " + printf("aic79xx: PCI%d:%d:%d MEM region 0x%llx " "unavailable. Cannot memory map device.\n", ahd_get_pci_bus(ahd->dev_softc), ahd_get_pci_slot(ahd->dev_softc), ahd_get_pci_function(ahd->dev_softc), - base); + (unsigned long long)base); } if (maddr == NULL) { - u_long base2; + resource_size_t base2; error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2); if (error == 0) { ahd->tags[0] = BUS_SPACE_PIO; ahd->tags[1] = BUS_SPACE_PIO; - ahd->bshs[0].ioport = base; - ahd->bshs[1].ioport = base2; + ahd->bshs[0].ioport = (u_long)base; + ahd->bshs[1].ioport = (u_long)base2; command |= PCIM_CMD_PORTEN; } else { - printf("aic79xx: PCI%d:%d:%d IO regions 0x%lx and 0x%lx" - "unavailable. Cannot map device.\n", + printf("aic79xx: PCI%d:%d:%d IO regions 0x%llx and " + "0x%llx unavailable. Cannot map device.\n", ahd_get_pci_bus(ahd->dev_softc), ahd_get_pci_slot(ahd->dev_softc), ahd_get_pci_function(ahd->dev_softc), - base, base2); + (unsigned long long)base, + (unsigned long long)base2); } } ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4); |