diff options
author | Lennert Buytenhek <buytenh@wantstofly.org> | 2006-09-18 23:17:36 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-25 10:25:41 +0100 |
commit | 7e9740b11529a0a69789fbe92d324f293e6266f6 (patch) | |
tree | 7ea94f603608744270756b56c668d658174a5b9b /arch/arm/mach-iop32x | |
parent | 0cb015f9dea8a40d82d170be1a4f39ff909890bf (diff) | |
download | linux-7e9740b11529a0a69789fbe92d324f293e6266f6.tar.bz2 |
[ARM] 3821/1: iop3xx: switch iop32x/iop33x over to shared pci code
Switch the iop32x and iop33x code over to the common PCI implementation,
and remove the (nearly identical) iop32x and iop33x PCI implementations.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-iop32x')
-rw-r--r-- | arch/arm/mach-iop32x/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-iop32x/common.c | 6 | ||||
-rw-r--r-- | arch/arm/mach-iop32x/iq31244-pci.c | 45 | ||||
-rw-r--r-- | arch/arm/mach-iop32x/iq80321-pci.c | 45 | ||||
-rw-r--r-- | arch/arm/mach-iop32x/irq.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-iop32x/pci.c | 220 |
6 files changed, 8 insertions, 312 deletions
diff --git a/arch/arm/mach-iop32x/Makefile b/arch/arm/mach-iop32x/Makefile index 94144f7efa6c..7266224ab6d7 100644 --- a/arch/arm/mach-iop32x/Makefile +++ b/arch/arm/mach-iop32x/Makefile @@ -2,7 +2,7 @@ # Makefile for the linux kernel. # -obj-y := common.o setup.o irq.o pci.o time.o +obj-y := common.o setup.o irq.o time.o obj-m := obj-n := obj- := diff --git a/arch/arm/mach-iop32x/common.c b/arch/arm/mach-iop32x/common.c index 17e7d650fecb..9a17a081327d 100644 --- a/arch/arm/mach-iop32x/common.c +++ b/arch/arm/mach-iop32x/common.c @@ -16,12 +16,6 @@ #include <asm/hardware.h> #include <asm/hardware/iop3xx.h> -/* - * Shared variables - */ -unsigned long iop3xx_pcibios_min_io = 0; -unsigned long iop3xx_pcibios_min_mem = 0; - #ifdef CONFIG_ARCH_EP80219 #include <linux/kernel.h> /* diff --git a/arch/arm/mach-iop32x/iq31244-pci.c b/arch/arm/mach-iop32x/iq31244-pci.c index e447c8103ecd..605b79553747 100644 --- a/arch/arm/mach-iop32x/iq31244-pci.c +++ b/arch/arm/mach-iop32x/iq31244-pci.c @@ -67,51 +67,12 @@ iq31244_map_irq(struct pci_dev *dev, u8 idsel, u8 pin) return PCI_IRQ_TABLE_LOOKUP(0, 7); } -static int iq31244_setup(int nr, struct pci_sys_data *sys) -{ - struct resource *res; - - if(nr != 0) - return 0; - - res = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL); - if (!res) - panic("PCI: unable to alloc resources"); - - res[0].start = IOP321_PCI_LOWER_IO_VA; - res[0].end = IOP321_PCI_UPPER_IO_VA; - res[0].name = "IQ31244 PCI I/O Space"; - res[0].flags = IORESOURCE_IO; - - res[1].start = IOP321_PCI_LOWER_MEM_PA; - res[1].end = IOP321_PCI_UPPER_MEM_PA; - res[1].name = "IQ31244 PCI Memory Space"; - res[1].flags = IORESOURCE_MEM; - - request_resource(&ioport_resource, &res[0]); - request_resource(&iomem_resource, &res[1]); - - sys->mem_offset = IOP321_PCI_MEM_OFFSET; - sys->io_offset = IOP321_PCI_IO_OFFSET; - - sys->resource[0] = &res[0]; - sys->resource[1] = &res[1]; - sys->resource[2] = NULL; - - return 1; -} - -static void iq31244_preinit(void) -{ - iop321_init(); -} - static struct hw_pci iq31244_pci __initdata = { .swizzle = pci_std_swizzle, .nr_controllers = 1, - .setup = iq31244_setup, - .scan = iop321_scan_bus, - .preinit = iq31244_preinit, + .setup = iop3xx_pci_setup, + .scan = iop3xx_pci_scan_bus, + .preinit = iop3xx_pci_preinit, .map_irq = iq31244_map_irq }; diff --git a/arch/arm/mach-iop32x/iq80321-pci.c b/arch/arm/mach-iop32x/iq80321-pci.c index 8767950e131f..cedc37b968b7 100644 --- a/arch/arm/mach-iop32x/iq80321-pci.c +++ b/arch/arm/mach-iop32x/iq80321-pci.c @@ -61,51 +61,12 @@ iq80321_map_irq(struct pci_dev *dev, u8 idsel, u8 pin) return pci_irq_table[idsel%4][pin-1]; } -static int iq80321_setup(int nr, struct pci_sys_data *sys) -{ - struct resource *res; - - if(nr != 0) - return 0; - - res = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL); - if (!res) - panic("PCI: unable to alloc resources"); - - res[0].start = IOP321_PCI_LOWER_IO_VA; - res[0].end = IOP321_PCI_UPPER_IO_VA; - res[0].name = "IQ80321 PCI I/O Space"; - res[0].flags = IORESOURCE_IO; - - res[1].start = IOP321_PCI_LOWER_MEM_PA; - res[1].end = IOP321_PCI_UPPER_MEM_PA; - res[1].name = "IQ80321 PCI Memory Space"; - res[1].flags = IORESOURCE_MEM; - - request_resource(&ioport_resource, &res[0]); - request_resource(&iomem_resource, &res[1]); - - sys->mem_offset = IOP321_PCI_MEM_OFFSET; - sys->io_offset = IOP321_PCI_IO_OFFSET; - - sys->resource[0] = &res[0]; - sys->resource[1] = &res[1]; - sys->resource[2] = NULL; - - return 1; -} - -static void iq80321_preinit(void) -{ - iop321_init(); -} - static struct hw_pci iq80321_pci __initdata = { .swizzle = pci_std_swizzle, .nr_controllers = 1, - .setup = iq80321_setup, - .scan = iop321_scan_bus, - .preinit = iq80321_preinit, + .setup = iop3xx_pci_setup, + .scan = iop3xx_pci_scan_bus, + .preinit = iop3xx_pci_preinit, .map_irq = iq80321_map_irq }; diff --git a/arch/arm/mach-iop32x/irq.c b/arch/arm/mach-iop32x/irq.c index c5f633d2d632..76f2d561dbc1 100644 --- a/arch/arm/mach-iop32x/irq.c +++ b/arch/arm/mach-iop32x/irq.c @@ -84,7 +84,7 @@ void __init iop321_init_irq(void) intstr_write(0); // treat all as IRQ if(machine_is_iq80321() || machine_is_iq31244()) // all interrupts are inputs to chip - *IOP321_PCIIRSR = 0x0f; + *IOP3XX_PCIIRSR = 0x0f; for(i = IOP321_IRQ_OFS; i < NR_IRQS; i++) { diff --git a/arch/arm/mach-iop32x/pci.c b/arch/arm/mach-iop32x/pci.c deleted file mode 100644 index 1a7c683673f2..000000000000 --- a/arch/arm/mach-iop32x/pci.c +++ /dev/null @@ -1,220 +0,0 @@ -/* - * arch/arm/mach-iop32x/pci.c - * - * PCI support for the Intel IOP321 chipset - * - * Author: Rory Bolt <rorybolt@pacbell.net> - * Copyright (C) 2002 Rory Bolt - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ -#include <linux/kernel.h> -#include <linux/pci.h> -#include <linux/slab.h> -#include <linux/mm.h> -#include <linux/init.h> -#include <linux/ioport.h> - -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/system.h> -#include <asm/hardware.h> -#include <asm/mach/pci.h> - -#include <asm/arch/iop321.h> - -// #define DEBUG - -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) do { } while (0) -#endif - -/* - * This routine builds either a type0 or type1 configuration command. If the - * bus is on the 80321 then a type0 made, else a type1 is created. - */ -static u32 iop321_cfg_address(struct pci_bus *bus, int devfn, int where) -{ - struct pci_sys_data *sys = bus->sysdata; - u32 addr; - - if (sys->busnr == bus->number) - addr = 1 << (PCI_SLOT(devfn) + 16) | (PCI_SLOT(devfn) << 11); - else - addr = bus->number << 16 | PCI_SLOT(devfn) << 11 | 1; - - addr |= PCI_FUNC(devfn) << 8 | (where & ~3); - - return addr; -} - -/* - * This routine checks the status of the last configuration cycle. If an error - * was detected it returns a 1, else it returns a 0. The errors being checked - * are parity, master abort, target abort (master and target). These types of - * errors occure during a config cycle where there is no device, like during - * the discovery stage. - */ -static int iop321_pci_status(void) -{ - unsigned int status; - int ret = 0; - - /* - * Check the status registers. - */ - status = *IOP321_ATUSR; - if (status & 0xf900) - { - DBG("\t\t\tPCI: P0 - status = 0x%08x\n", status); - *IOP321_ATUSR = status & 0xf900; - ret = 1; - } - status = *IOP321_ATUISR; - if (status & 0x679f) - { - DBG("\t\t\tPCI: P1 - status = 0x%08x\n", status); - *IOP321_ATUISR = status & 0x679f; - ret = 1; - } - return ret; -} - -/* - * Simply write the address register and read the configuration - * data. Note that the 4 nop's ensure that we are able to handle - * a delayed abort (in theory.) - */ -static inline u32 iop321_read(unsigned long addr) -{ - u32 val; - - __asm__ __volatile__( - "str %1, [%2]\n\t" - "ldr %0, [%3]\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - : "=r" (val) - : "r" (addr), "r" (IOP321_OCCAR), "r" (IOP321_OCCDR)); - - return val; -} - -/* - * The read routines must check the error status of the last configuration - * cycle. If there was an error, the routine returns all hex f's. - */ -static int -iop321_read_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 *value) -{ - unsigned long addr = iop321_cfg_address(bus, devfn, where); - u32 val = iop321_read(addr) >> ((where & 3) * 8); - - if( iop321_pci_status() ) - val = 0xffffffff; - - *value = val; - - return PCIBIOS_SUCCESSFUL; -} - -static int -iop321_write_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 value) -{ - unsigned long addr = iop321_cfg_address(bus, devfn, where); - u32 val; - - if (size != 4) { - val = iop321_read(addr); - if (!iop321_pci_status() == 0) - return PCIBIOS_SUCCESSFUL; - - where = (where & 3) * 8; - - if (size == 1) - val &= ~(0xff << where); - else - val &= ~(0xffff << where); - - *IOP321_OCCDR = val | value << where; - } else { - asm volatile( - "str %1, [%2]\n\t" - "str %0, [%3]\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - "nop\n\t" - : - : "r" (value), "r" (addr), - "r" (IOP321_OCCAR), "r" (IOP321_OCCDR)); - } - - return PCIBIOS_SUCCESSFUL; -} - -static struct pci_ops iop321_ops = { - .read = iop321_read_config, - .write = iop321_write_config, -}; - -/* - * When a PCI device does not exist during config cycles, the 80200 gets a - * bus error instead of returning 0xffffffff. This handler simply returns. - */ -int -iop321_pci_abort(unsigned long addr, unsigned int fsr, struct pt_regs *regs) -{ - DBG("PCI abort: address = 0x%08lx fsr = 0x%03x PC = 0x%08lx LR = 0x%08lx\n", - addr, fsr, regs->ARM_pc, regs->ARM_lr); - - /* - * If it was an imprecise abort, then we need to correct the - * return address to be _after_ the instruction. - */ - if (fsr & (1 << 10)) - regs->ARM_pc += 4; - - return 0; -} - -/* - * Scan an IOP321 PCI bus. sys->bus defines which bus we scan. - */ -struct pci_bus *iop321_scan_bus(int nr, struct pci_sys_data *sys) -{ - return pci_scan_bus(sys->busnr, &iop321_ops, sys); -} - -void iop321_init(void) -{ - DBG("PCI: Intel 80321 PCI init code.\n"); - DBG("ATU: IOP321_ATUCMD=0x%04x\n", *IOP321_ATUCMD); - DBG("ATU: IOP321_OMWTVR0=0x%04x, IOP321_OIOWTVR=0x%04x\n", - *IOP321_OMWTVR0, - *IOP321_OIOWTVR); - DBG("ATU: IOP321_ATUCR=0x%08x\n", *IOP321_ATUCR); - DBG("ATU: IOP321_IABAR0=0x%08x IOP321_IALR0=0x%08x IOP321_IATVR0=%08x\n", - *IOP321_IABAR0, *IOP321_IALR0, *IOP321_IATVR0); - DBG("ATU: IOP321_OMWTVR0=0x%08x\n", *IOP321_OMWTVR0); - DBG("ATU: IOP321_IABAR1=0x%08x IOP321_IALR1=0x%08x\n", - *IOP321_IABAR1, *IOP321_IALR1); - DBG("ATU: IOP321_ERBAR=0x%08x IOP321_ERLR=0x%08x IOP321_ERTVR=%08x\n", - *IOP321_ERBAR, *IOP321_ERLR, *IOP321_ERTVR); - DBG("ATU: IOP321_IABAR2=0x%08x IOP321_IALR2=0x%08x IOP321_IATVR2=%08x\n", - *IOP321_IABAR2, *IOP321_IALR2, *IOP321_IATVR2); - DBG("ATU: IOP321_IABAR3=0x%08x IOP321_IALR3=0x%08x IOP321_IATVR3=%08x\n", - *IOP321_IABAR3, *IOP321_IALR3, *IOP321_IATVR3); - - hook_fault_code(16+6, iop321_pci_abort, SIGBUS, "imprecise external abort"); -} - |