diff options
Diffstat (limited to 'arch/arm/plat-iop/pci.c')
| -rw-r--r-- | arch/arm/plat-iop/pci.c | 114 |
1 files changed, 66 insertions, 48 deletions
diff --git a/arch/arm/plat-iop/pci.c b/arch/arm/plat-iop/pci.c index 98d01517b56..362474b5c40 100644 --- a/arch/arm/plat-iop/pci.c +++ b/arch/arm/plat-iop/pci.c @@ -17,11 +17,10 @@ #include <linux/mm.h> #include <linux/init.h> #include <linux/ioport.h> -#include <asm/io.h> +#include <linux/io.h> #include <asm/irq.h> #include <asm/signal.h> -#include <asm/system.h> -#include <asm/hardware.h> +#include <mach/hardware.h> #include <asm/mach/pci.h> #include <asm/hardware/iop3xx.h> @@ -161,7 +160,7 @@ iop3xx_write_config(struct pci_bus *bus, unsigned int devfn, int where, return PCIBIOS_SUCCESSFUL; } -static struct pci_ops iop3xx_ops = { +struct pci_ops iop3xx_ops = { .read = iop3xx_read_config, .write = iop3xx_write_config, }; @@ -193,37 +192,28 @@ int iop3xx_pci_setup(int nr, struct pci_sys_data *sys) if (nr != 0) return 0; - res = kzalloc(2 * sizeof(struct resource), GFP_KERNEL); + res = kzalloc(sizeof(struct resource), GFP_KERNEL); if (!res) panic("PCI: unable to alloc resources"); - res[0].start = IOP3XX_PCI_LOWER_IO_PA; - res[0].end = IOP3XX_PCI_LOWER_IO_PA + IOP3XX_PCI_IO_WINDOW_SIZE - 1; - res[0].name = "IOP3XX PCI I/O Space"; - res[0].flags = IORESOURCE_IO; - request_resource(&ioport_resource, &res[0]); + res->start = IOP3XX_PCI_LOWER_MEM_PA; + res->end = IOP3XX_PCI_LOWER_MEM_PA + IOP3XX_PCI_MEM_WINDOW_SIZE - 1; + res->name = "IOP3XX PCI Memory Space"; + res->flags = IORESOURCE_MEM; + request_resource(&iomem_resource, res); - res[1].start = IOP3XX_PCI_LOWER_MEM_PA; - res[1].end = IOP3XX_PCI_LOWER_MEM_PA + IOP3XX_PCI_MEM_WINDOW_SIZE - 1; - res[1].name = "IOP3XX PCI Memory Space"; - res[1].flags = IORESOURCE_MEM; - request_resource(&iomem_resource, &res[1]); + /* + * Use whatever translation is already setup. + */ + sys->mem_offset = IOP3XX_PCI_LOWER_MEM_PA - *IOP3XX_OMWTVR0; - sys->mem_offset = IOP3XX_PCI_LOWER_MEM_PA - IOP3XX_PCI_LOWER_MEM_BA; - sys->io_offset = IOP3XX_PCI_LOWER_IO_PA - IOP3XX_PCI_LOWER_IO_BA; + pci_add_resource_offset(&sys->resources, res, sys->mem_offset); - sys->resource[0] = &res[0]; - sys->resource[1] = &res[1]; - sys->resource[2] = NULL; + pci_ioremap_io(0, IOP3XX_PCI_LOWER_IO_PA); return 1; } -struct pci_bus *iop3xx_pci_scan_bus(int nr, struct pci_sys_data *sys) -{ - return pci_scan_bus(sys->busnr, &iop3xx_ops, sys); -} - void __init iop3xx_atu_setup(void) { /* BAR 0 ( Disabled ) */ @@ -250,11 +240,12 @@ void __init iop3xx_atu_setup(void) *IOP3XX_IATVR2 = PHYS_OFFSET; /* Outbound window 0 */ - *IOP3XX_OMWTVR0 = IOP3XX_PCI_LOWER_MEM_PA; + *IOP3XX_OMWTVR0 = IOP3XX_PCI_LOWER_MEM_BA; *IOP3XX_OUMWTVR0 = 0; /* Outbound window 1 */ - *IOP3XX_OMWTVR1 = IOP3XX_PCI_LOWER_MEM_PA + IOP3XX_PCI_MEM_WINDOW_SIZE; + *IOP3XX_OMWTVR1 = IOP3XX_PCI_LOWER_MEM_BA + + IOP3XX_PCI_MEM_WINDOW_SIZE / 2; *IOP3XX_OUMWTVR1 = 0; /* BAR 3 ( Disabled ) */ @@ -265,7 +256,7 @@ void __init iop3xx_atu_setup(void) /* Setup the I/O Bar */ - *IOP3XX_OIOWTVR = IOP3XX_PCI_LOWER_IO_PA;; + *IOP3XX_OIOWTVR = IOP3XX_PCI_LOWER_IO_BA; /* Enable inbound and outbound cycles */ @@ -322,32 +313,59 @@ void __init iop3xx_atu_disable(void) /* Flag to determine whether the ATU is initialized and the PCI bus scanned */ int init_atu; -void __init iop3xx_pci_preinit(void) +int iop3xx_get_init_atu(void) { + /* check if default has been overridden */ + if (init_atu != IOP3XX_INIT_ATU_DEFAULT) + return init_atu; + else + return IOP3XX_INIT_ATU_DISABLE; +} + +static void __init iop3xx_atu_debug(void) +{ + DBG("PCI: Intel IOP3xx PCI init.\n"); + DBG("PCI: Outbound memory window 0: PCI 0x%08x%08x\n", + *IOP3XX_OUMWTVR0, *IOP3XX_OMWTVR0); + DBG("PCI: Outbound memory window 1: PCI 0x%08x%08x\n", + *IOP3XX_OUMWTVR1, *IOP3XX_OMWTVR1); + DBG("PCI: Outbound IO window: PCI 0x%08x\n", + *IOP3XX_OIOWTVR); + + DBG("PCI: Inbound memory window 0: PCI 0x%08x%08x 0x%08x -> 0x%08x\n", + *IOP3XX_IAUBAR0, *IOP3XX_IABAR0, *IOP3XX_IALR0, *IOP3XX_IATVR0); + DBG("PCI: Inbound memory window 1: PCI 0x%08x%08x 0x%08x\n", + *IOP3XX_IAUBAR1, *IOP3XX_IABAR1, *IOP3XX_IALR1); + DBG("PCI: Inbound memory window 2: PCI 0x%08x%08x 0x%08x -> 0x%08x\n", + *IOP3XX_IAUBAR2, *IOP3XX_IABAR2, *IOP3XX_IALR2, *IOP3XX_IATVR2); + DBG("PCI: Inbound memory window 3: PCI 0x%08x%08x 0x%08x -> 0x%08x\n", + *IOP3XX_IAUBAR3, *IOP3XX_IABAR3, *IOP3XX_IALR3, *IOP3XX_IATVR3); + + DBG("PCI: Expansion ROM window: PCI 0x%08x%08x 0x%08x -> 0x%08x\n", + 0, *IOP3XX_ERBAR, *IOP3XX_ERLR, *IOP3XX_ERTVR); + + DBG("ATU: IOP3XX_ATUCMD=0x%04x\n", *IOP3XX_ATUCMD); + DBG("ATU: IOP3XX_ATUCR=0x%08x\n", *IOP3XX_ATUCR); + + hook_fault_code(16+6, iop3xx_pci_abort, SIGBUS, 0, "imprecise external abort"); +} + +/* for platforms that might be host-bus-adapters */ +void __init iop3xx_pci_preinit_cond(void) { if (iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) { iop3xx_atu_disable(); iop3xx_atu_setup(); + iop3xx_atu_debug(); } +} - DBG("PCI: Intel 803xx PCI init code.\n"); - DBG("ATU: IOP3XX_ATUCMD=0x%04x\n", *IOP3XX_ATUCMD); - DBG("ATU: IOP3XX_OMWTVR0=0x%04x, IOP3XX_OIOWTVR=0x%04x\n", - *IOP3XX_OMWTVR0, - *IOP3XX_OIOWTVR); - DBG("ATU: IOP3XX_ATUCR=0x%08x\n", *IOP3XX_ATUCR); - DBG("ATU: IOP3XX_IABAR0=0x%08x IOP3XX_IALR0=0x%08x IOP3XX_IATVR0=%08x\n", - *IOP3XX_IABAR0, *IOP3XX_IALR0, *IOP3XX_IATVR0); - DBG("ATU: IOP3XX_OMWTVR0=0x%08x\n", *IOP3XX_OMWTVR0); - DBG("ATU: IOP3XX_IABAR1=0x%08x IOP3XX_IALR1=0x%08x\n", - *IOP3XX_IABAR1, *IOP3XX_IALR1); - DBG("ATU: IOP3XX_ERBAR=0x%08x IOP3XX_ERLR=0x%08x IOP3XX_ERTVR=%08x\n", - *IOP3XX_ERBAR, *IOP3XX_ERLR, *IOP3XX_ERTVR); - DBG("ATU: IOP3XX_IABAR2=0x%08x IOP3XX_IALR2=0x%08x IOP3XX_IATVR2=%08x\n", - *IOP3XX_IABAR2, *IOP3XX_IALR2, *IOP3XX_IATVR2); - DBG("ATU: IOP3XX_IABAR3=0x%08x IOP3XX_IALR3=0x%08x IOP3XX_IATVR3=%08x\n", - *IOP3XX_IABAR3, *IOP3XX_IALR3, *IOP3XX_IATVR3); - - hook_fault_code(16+6, iop3xx_pci_abort, SIGBUS, "imprecise external abort"); +void __init iop3xx_pci_preinit(void) +{ + pcibios_min_mem = 0; + + iop3xx_atu_disable(); + iop3xx_atu_setup(); + iop3xx_atu_debug(); } /* allow init_atu to be user overridden */ |