diff options
Diffstat (limited to 'arch/arm/mach-integrator/pci_v3.c')
| -rw-r--r-- | arch/arm/mach-integrator/pci_v3.c | 62 |
1 files changed, 29 insertions, 33 deletions
diff --git a/arch/arm/mach-integrator/pci_v3.c b/arch/arm/mach-integrator/pci_v3.c index b866880e82ac..bbeca59df66b 100644 --- a/arch/arm/mach-integrator/pci_v3.c +++ b/arch/arm/mach-integrator/pci_v3.c @@ -41,61 +41,61 @@ /* * The V3 PCI interface chip in Integrator provides several windows from * local bus memory into the PCI memory areas. Unfortunately, there - * are not really enough windows for our usage, therefore we reuse + * are not really enough windows for our usage, therefore we reuse * one of the windows for access to PCI configuration space. The * memory map is as follows: - * + * * Local Bus Memory Usage - * + * * 40000000 - 4FFFFFFF PCI memory. 256M non-prefetchable * 50000000 - 5FFFFFFF PCI memory. 256M prefetchable * 60000000 - 60FFFFFF PCI IO. 16M * 61000000 - 61FFFFFF PCI Configuration. 16M - * + * * There are three V3 windows, each described by a pair of V3 registers. * These are LB_BASE0/LB_MAP0, LB_BASE1/LB_MAP1 and LB_BASE2/LB_MAP2. * Base0 and Base1 can be used for any type of PCI memory access. Base2 * can be used either for PCI I/O or for I20 accesses. By default, uHAL * uses this only for PCI IO space. - * + * * Normally these spaces are mapped using the following base registers: - * + * * Usage Local Bus Memory Base/Map registers used - * + * * Mem 40000000 - 4FFFFFFF LB_BASE0/LB_MAP0 * Mem 50000000 - 5FFFFFFF LB_BASE1/LB_MAP1 * IO 60000000 - 60FFFFFF LB_BASE2/LB_MAP2 * Cfg 61000000 - 61FFFFFF - * + * * This means that I20 and PCI configuration space accesses will fail. - * When PCI configuration accesses are needed (via the uHAL PCI + * When PCI configuration accesses are needed (via the uHAL PCI * configuration space primitives) we must remap the spaces as follows: - * + * * Usage Local Bus Memory Base/Map registers used - * + * * Mem 40000000 - 4FFFFFFF LB_BASE0/LB_MAP0 * Mem 50000000 - 5FFFFFFF LB_BASE0/LB_MAP0 * IO 60000000 - 60FFFFFF LB_BASE2/LB_MAP2 * Cfg 61000000 - 61FFFFFF LB_BASE1/LB_MAP1 - * + * * To make this work, the code depends on overlapping windows working. - * The V3 chip translates an address by checking its range within + * The V3 chip translates an address by checking its range within * each of the BASE/MAP pairs in turn (in ascending register number * order). It will use the first matching pair. So, for example, * if the same address is mapped by both LB_BASE0/LB_MAP0 and - * LB_BASE1/LB_MAP1, the V3 will use the translation from + * LB_BASE1/LB_MAP1, the V3 will use the translation from * LB_BASE0/LB_MAP0. - * + * * To allow PCI Configuration space access, the code enlarges the * window mapped by LB_BASE0/LB_MAP0 from 256M to 512M. This occludes * the windows currently mapped by LB_BASE1/LB_MAP1 so that it can * be remapped for use by configuration cycles. - * - * At the end of the PCI Configuration space accesses, + * + * At the end of the PCI Configuration space accesses, * LB_BASE1/LB_MAP1 is reset to map PCI Memory. Finally the window * mapped by LB_BASE0/LB_MAP0 is reduced in size from 512M to 256M to * reveal the now restored LB_BASE1/LB_MAP1 window. - * + * * NOTE: We do not set up I2O mapping. I suspect that this is only * for an intelligent (target) device. Using I2O disables most of * the mappings into PCI memory. @@ -127,8 +127,8 @@ * * returns: configuration address to play on the PCI bus * - * To generate the appropriate PCI configuration cycles in the PCI - * configuration address space, you present the V3 with the following pattern + * To generate the appropriate PCI configuration cycles in the PCI + * configuration address space, you present the V3 with the following pattern * (which is very nearly a type 1 (except that the lower two bits are 00 and * not 01). In order for this mapping to work you need to set up one of * the local to PCI aperatures to 16Mbytes in length translating to @@ -138,7 +138,7 @@ * * Type 0: * - * 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 + * 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 * 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | | |D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|0| @@ -150,7 +150,7 @@ * * Type 1: * - * 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 + * 3 3|3 3 2 2|2 2 2 2|2 2 2 2|1 1 1 1|1 1 1 1|1 1 * 3 2|1 0 9 8|7 6 5 4|3 2 1 0|9 8 7 6|5 4 3 2|1 0 9 8|7 6 5 4|3 2 1 0 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ * | | | | | | | | | | |B|B|B|B|B|B|B|B|D|D|D|D|D|F|F|F|R|R|R|R|R|R|0|1| @@ -161,7 +161,7 @@ * 15:11 Device number (5 bits) * 10:8 function number * 7:2 register number - * + * */ static DEFINE_RAW_SPINLOCK(v3_lock); @@ -181,7 +181,7 @@ static DEFINE_RAW_SPINLOCK(v3_lock); #undef V3_LB_BASE_PREFETCH #define V3_LB_BASE_PREFETCH 0 -static unsigned long v3_open_config_window(struct pci_bus *bus, +static void __iomem *v3_open_config_window(struct pci_bus *bus, unsigned int devfn, int offset) { unsigned int address, mapaddress, busnr; @@ -280,7 +280,7 @@ static void v3_close_config_window(void) static int v3_read_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val) { - unsigned long addr; + void __iomem *addr; unsigned long flags; u32 v; @@ -311,7 +311,7 @@ static int v3_read_config(struct pci_bus *bus, unsigned int devfn, int where, static int v3_write_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val) { - unsigned long addr; + void __iomem *addr; unsigned long flags; raw_spin_lock_irqsave(&v3_lock, flags); @@ -374,12 +374,9 @@ static int __init pci_v3_setup_resources(struct pci_sys_data *sys) } /* - * the IO resource for this bus * the mem resource for this bus * the prefetch mem resource for this bus */ - pci_add_resource_offset(&sys->resources, - &ioport_resource, sys->io_offset); pci_add_resource_offset(&sys->resources, &non_mem, sys->mem_offset); pci_add_resource_offset(&sys->resources, &pre_mem, sys->mem_offset); @@ -391,9 +388,9 @@ static int __init pci_v3_setup_resources(struct pci_sys_data *sys) * means I can't get additional information on the reason for the pm2fb * problems. I suppose I'll just have to mind-meld with the machine. ;) */ -#define SC_PCI IO_ADDRESS(INTEGRATOR_SC_PCIENABLE) -#define SC_LBFADDR IO_ADDRESS(INTEGRATOR_SC_BASE + 0x20) -#define SC_LBFCODE IO_ADDRESS(INTEGRATOR_SC_BASE + 0x24) +#define SC_PCI __io_address(INTEGRATOR_SC_PCIENABLE) +#define SC_LBFADDR __io_address(INTEGRATOR_SC_BASE + 0x20) +#define SC_LBFCODE __io_address(INTEGRATOR_SC_BASE + 0x24) static int v3_pci_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs) @@ -498,7 +495,6 @@ void __init pci_v3_preinit(void) unsigned int temp; int ret; - pcibios_min_io = 0x6000; pcibios_min_mem = 0x00100000; /* |