diff options
author | David S. Miller <davem@davemloft.net> | 2008-07-18 02:39:39 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2008-07-18 02:39:39 -0700 |
commit | 49997d75152b3d23c53b0fa730599f2f74c92c65 (patch) | |
tree | 46e93126170d02cfec9505172e545732c1b69656 /arch/ppc/syslib/mpc52xx_pci.c | |
parent | a0c80b80e0fb48129e4e9d6a9ede914f9ff1850d (diff) | |
parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/powerpc/booting-without-of.txt
drivers/atm/Makefile
drivers/net/fs_enet/fs_enet-main.c
drivers/pci/pci-acpi.c
net/8021q/vlan.c
net/iucv/iucv.c
Diffstat (limited to 'arch/ppc/syslib/mpc52xx_pci.c')
-rw-r--r-- | arch/ppc/syslib/mpc52xx_pci.c | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/arch/ppc/syslib/mpc52xx_pci.c b/arch/ppc/syslib/mpc52xx_pci.c deleted file mode 100644 index 20a0eac0dc3..00000000000 --- a/arch/ppc/syslib/mpc52xx_pci.c +++ /dev/null @@ -1,289 +0,0 @@ -/* - * PCI code for the Freescale MPC52xx embedded CPU. - * - * - * Maintainer : Sylvain Munaut <tnt@246tNt.com> - * - * Copyright (C) 2004 Sylvain Munaut <tnt@246tNt.com> - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - */ - - -#include <asm/pci.h> - -#include <asm/mpc52xx.h> -#include "mpc52xx_pci.h" - -#include <asm/delay.h> -#include <asm/machdep.h> - - -/* This macro is defined to activate the workaround for the bug - 435 of the MPC5200 (L25R). With it activated, we don't do any - 32 bits configuration access during type-1 cycles */ -#define MPC5200_BUG_435_WORKAROUND - - -static int -mpc52xx_pci_read_config(struct pci_bus *bus, unsigned int devfn, - int offset, int len, u32 *val) -{ - struct pci_controller *hose = bus->sysdata; - u32 value; - - if (ppc_md.pci_exclude_device) - if (ppc_md.pci_exclude_device(bus->number, devfn)) - return PCIBIOS_DEVICE_NOT_FOUND; - - out_be32(hose->cfg_addr, - (1 << 31) | - ((bus->number - hose->bus_offset) << 16) | - (devfn << 8) | - (offset & 0xfc)); - mb(); - -#ifdef MPC5200_BUG_435_WORKAROUND - if (bus->number != hose->bus_offset) { - switch (len) { - case 1: - value = in_8(((u8 __iomem *)hose->cfg_data) + (offset & 3)); - break; - case 2: - value = in_le16(((u16 __iomem *)hose->cfg_data) + ((offset>>1) & 1)); - break; - - default: - value = in_le16((u16 __iomem *)hose->cfg_data) | - (in_le16(((u16 __iomem *)hose->cfg_data) + 1) << 16); - break; - } - } - else -#endif - { - value = in_le32(hose->cfg_data); - - if (len != 4) { - value >>= ((offset & 0x3) << 3); - value &= 0xffffffff >> (32 - (len << 3)); - } - } - - *val = value; - - out_be32(hose->cfg_addr, 0); - mb(); - - return PCIBIOS_SUCCESSFUL; -} - -static int -mpc52xx_pci_write_config(struct pci_bus *bus, unsigned int devfn, - int offset, int len, u32 val) -{ - struct pci_controller *hose = bus->sysdata; - u32 value, mask; - - if (ppc_md.pci_exclude_device) - if (ppc_md.pci_exclude_device(bus->number, devfn)) - return PCIBIOS_DEVICE_NOT_FOUND; - - out_be32(hose->cfg_addr, - (1 << 31) | - ((bus->number - hose->bus_offset) << 16) | - (devfn << 8) | - (offset & 0xfc)); - mb(); - -#ifdef MPC5200_BUG_435_WORKAROUND - if (bus->number != hose->bus_offset) { - switch (len) { - case 1: - out_8(((u8 __iomem *)hose->cfg_data) + - (offset & 3), val); - break; - case 2: - out_le16(((u16 __iomem *)hose->cfg_data) + - ((offset>>1) & 1), val); - break; - - default: - out_le16((u16 __iomem *)hose->cfg_data, - (u16)val); - out_le16(((u16 __iomem *)hose->cfg_data) + 1, - (u16)(val>>16)); - break; - } - } - else -#endif - { - if (len != 4) { - value = in_le32(hose->cfg_data); - - offset = (offset & 0x3) << 3; - mask = (0xffffffff >> (32 - (len << 3))); - mask <<= offset; - - value &= ~mask; - val = value | ((val << offset) & mask); - } - - out_le32(hose->cfg_data, val); - } - mb(); - - out_be32(hose->cfg_addr, 0); - mb(); - - return PCIBIOS_SUCCESSFUL; -} - -static struct pci_ops mpc52xx_pci_ops = { - .read = mpc52xx_pci_read_config, - .write = mpc52xx_pci_write_config -}; - - -static void __init -mpc52xx_pci_setup(struct mpc52xx_pci __iomem *pci_regs) -{ - u32 tmp; - - /* Setup control regs */ - tmp = in_be32(&pci_regs->scr); - tmp |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - out_be32(&pci_regs->scr, tmp); - - /* Setup windows */ - out_be32(&pci_regs->iw0btar, MPC52xx_PCI_IWBTAR_TRANSLATION( - MPC52xx_PCI_MEM_START + MPC52xx_PCI_MEM_OFFSET, - MPC52xx_PCI_MEM_START, - MPC52xx_PCI_MEM_SIZE )); - - out_be32(&pci_regs->iw1btar, MPC52xx_PCI_IWBTAR_TRANSLATION( - MPC52xx_PCI_MMIO_START + MPC52xx_PCI_MEM_OFFSET, - MPC52xx_PCI_MMIO_START, - MPC52xx_PCI_MMIO_SIZE )); - - out_be32(&pci_regs->iw2btar, MPC52xx_PCI_IWBTAR_TRANSLATION( - MPC52xx_PCI_IO_BASE, - MPC52xx_PCI_IO_START, - MPC52xx_PCI_IO_SIZE )); - - out_be32(&pci_regs->iwcr, MPC52xx_PCI_IWCR_PACK( - ( MPC52xx_PCI_IWCR_ENABLE | /* iw0btar */ - MPC52xx_PCI_IWCR_READ_MULTI | - MPC52xx_PCI_IWCR_MEM ), - ( MPC52xx_PCI_IWCR_ENABLE | /* iw1btar */ - MPC52xx_PCI_IWCR_READ | - MPC52xx_PCI_IWCR_MEM ), - ( MPC52xx_PCI_IWCR_ENABLE | /* iw2btar */ - MPC52xx_PCI_IWCR_IO ) - )); - - - out_be32(&pci_regs->tbatr0, - MPC52xx_PCI_TBATR_ENABLE | MPC52xx_PCI_TARGET_IO ); - out_be32(&pci_regs->tbatr1, - MPC52xx_PCI_TBATR_ENABLE | MPC52xx_PCI_TARGET_MEM ); - - out_be32(&pci_regs->tcr, MPC52xx_PCI_TCR_LD); - - /* Reset the exteral bus ( internal PCI controller is NOT resetted ) */ - /* Not necessary and can be a bad thing if for example the bootloader - is displaying a splash screen or ... Just left here for - documentation purpose if anyone need it */ - tmp = in_be32(&pci_regs->gscr); -#if 0 - out_be32(&pci_regs->gscr, tmp | MPC52xx_PCI_GSCR_PR); - udelay(50); -#endif - out_be32(&pci_regs->gscr, tmp & ~MPC52xx_PCI_GSCR_PR); -} - -static void -mpc52xx_pci_fixup_resources(struct pci_dev *dev) -{ - int i; - - /* We don't rely on boot loader for PCI and resets all - devices */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - struct resource *res = &dev->resource[i]; - if (res->end > res->start) { /* Only valid resources */ - res->end -= res->start; - res->start = 0; - res->flags |= IORESOURCE_UNSET; - } - } - - /* The PCI Host bridge of MPC52xx has a prefetch memory resource - fixed to 1Gb. Doesn't fit in the resource system so we remove it */ - if ( (dev->vendor == PCI_VENDOR_ID_MOTOROLA) && - ( dev->device == PCI_DEVICE_ID_MOTOROLA_MPC5200 - || dev->device == PCI_DEVICE_ID_MOTOROLA_MPC5200B) ) { - struct resource *res = &dev->resource[1]; - res->start = res->end = res->flags = 0; - } -} - -void __init -mpc52xx_find_bridges(void) -{ - struct mpc52xx_pci __iomem *pci_regs; - struct pci_controller *hose; - - pci_assign_all_buses = 1; - - pci_regs = ioremap(MPC52xx_PA(MPC52xx_PCI_OFFSET), MPC52xx_PCI_SIZE); - if (!pci_regs) - return; - - hose = pcibios_alloc_controller(); - if (!hose) { - iounmap(pci_regs); - return; - } - - ppc_md.pci_swizzle = common_swizzle; - ppc_md.pcibios_fixup_resources = mpc52xx_pci_fixup_resources; - - hose->first_busno = 0; - hose->last_busno = 0xff; - hose->bus_offset = 0; - hose->ops = &mpc52xx_pci_ops; - - mpc52xx_pci_setup(pci_regs); - - hose->pci_mem_offset = MPC52xx_PCI_MEM_OFFSET; - - hose->io_base_virt = ioremap(MPC52xx_PCI_IO_BASE, MPC52xx_PCI_IO_SIZE); - isa_io_base = (unsigned long) hose->io_base_virt; - - hose->cfg_addr = &pci_regs->car; - hose->cfg_data = hose->io_base_virt; - - /* Setup resources */ - pci_init_resource(&hose->mem_resources[0], - MPC52xx_PCI_MEM_START, - MPC52xx_PCI_MEM_STOP, - IORESOURCE_MEM|IORESOURCE_PREFETCH, - "PCI prefetchable memory"); - - pci_init_resource(&hose->mem_resources[1], - MPC52xx_PCI_MMIO_START, - MPC52xx_PCI_MMIO_STOP, - IORESOURCE_MEM, - "PCI memory"); - - pci_init_resource(&hose->io_resource, - MPC52xx_PCI_IO_START, - MPC52xx_PCI_IO_STOP, - IORESOURCE_IO, - "PCI I/O"); - -} |