diff options
author | Ishizaki Kou <kou.ishizaki@toshiba.co.jp> | 2008-04-24 19:24:13 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2008-04-24 21:08:13 +1000 |
commit | 6ec859e1b21ab42bfc36bb3b51db275480165c8a (patch) | |
tree | 299d0729340598d795559084a11c2fdfc61ce199 /arch/powerpc/platforms/celleb/io-workarounds.c | |
parent | 7cfb62a2e820b6032c08835dbd996d8518af14a3 (diff) |
[POWERPC] celleb: Consolidate io-workarounds code
Now, we can use generic io-workarounds mechanism and the workaround
code for spider-pci. This changes Celleb PCI code to use spider-pci
code.
Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/platforms/celleb/io-workarounds.c')
-rw-r--r-- | arch/powerpc/platforms/celleb/io-workarounds.c | 280 |
1 files changed, 0 insertions, 280 deletions
diff --git a/arch/powerpc/platforms/celleb/io-workarounds.c b/arch/powerpc/platforms/celleb/io-workarounds.c deleted file mode 100644 index 423339be1ba..00000000000 --- a/arch/powerpc/platforms/celleb/io-workarounds.c +++ /dev/null @@ -1,280 +0,0 @@ -/* - * Support for Celleb io workarounds - * - * (C) Copyright 2006-2007 TOSHIBA CORPORATION - * - * This file is based to arch/powerpc/platform/cell/io-workarounds.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#undef DEBUG - -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/irq.h> - -#include <asm/io.h> -#include <asm/prom.h> -#include <asm/machdep.h> -#include <asm/pci-bridge.h> -#include <asm/ppc-pci.h> - -#include "pci.h" - -#define MAX_CELLEB_PCI_BUS 4 - -void *celleb_dummy_page_va; - -static struct celleb_pci_bus { - struct pci_controller *phb; - void (*dummy_read)(struct pci_controller *); -} celleb_pci_busses[MAX_CELLEB_PCI_BUS]; - -static int celleb_pci_count = 0; - -static struct celleb_pci_bus *celleb_pci_find(unsigned long vaddr, - unsigned long paddr) -{ - int i, j; - struct resource *res; - - for (i = 0; i < celleb_pci_count; i++) { - struct celleb_pci_bus *bus = &celleb_pci_busses[i]; - struct pci_controller *phb = bus->phb; - if (paddr) - for (j = 0; j < 3; j++) { - res = &phb->mem_resources[j]; - if (paddr >= res->start && paddr <= res->end) - return bus; - } - res = &phb->io_resource; - if (vaddr && vaddr >= res->start && vaddr <= res->end) - return bus; - } - return NULL; -} - -static void celleb_io_flush(const PCI_IO_ADDR addr) -{ - struct celleb_pci_bus *bus; - int token; - - token = PCI_GET_ADDR_TOKEN(addr); - - if (token && token <= celleb_pci_count) - bus = &celleb_pci_busses[token - 1]; - else { - unsigned long vaddr, paddr; - pte_t *ptep; - - vaddr = (unsigned long)PCI_FIX_ADDR(addr); - if (vaddr < PHB_IO_BASE || vaddr >= PHB_IO_END) - return; - - ptep = find_linux_pte(init_mm.pgd, vaddr); - if (ptep == NULL) - paddr = 0; - else - paddr = pte_pfn(*ptep) << PAGE_SHIFT; - bus = celleb_pci_find(vaddr, paddr); - - if (bus == NULL) - return; - } - - if (bus->dummy_read) - bus->dummy_read(bus->phb); -} - -static u8 celleb_readb(const PCI_IO_ADDR addr) -{ - u8 val; - val = __do_readb(addr); - celleb_io_flush(addr); - return val; -} - -static u16 celleb_readw(const PCI_IO_ADDR addr) -{ - u16 val; - val = __do_readw(addr); - celleb_io_flush(addr); - return val; -} - -static u32 celleb_readl(const PCI_IO_ADDR addr) -{ - u32 val; - val = __do_readl(addr); - celleb_io_flush(addr); - return val; -} - -static u64 celleb_readq(const PCI_IO_ADDR addr) -{ - u64 val; - val = __do_readq(addr); - celleb_io_flush(addr); - return val; -} - -static u16 celleb_readw_be(const PCI_IO_ADDR addr) -{ - u16 val; - val = __do_readw_be(addr); - celleb_io_flush(addr); - return val; -} - -static u32 celleb_readl_be(const PCI_IO_ADDR addr) -{ - u32 val; - val = __do_readl_be(addr); - celleb_io_flush(addr); - return val; -} - -static u64 celleb_readq_be(const PCI_IO_ADDR addr) -{ - u64 val; - val = __do_readq_be(addr); - celleb_io_flush(addr); - return val; -} - -static void celleb_readsb(const PCI_IO_ADDR addr, - void *buf, unsigned long count) -{ - __do_readsb(addr, buf, count); - celleb_io_flush(addr); -} - -static void celleb_readsw(const PCI_IO_ADDR addr, - void *buf, unsigned long count) -{ - __do_readsw(addr, buf, count); - celleb_io_flush(addr); -} - -static void celleb_readsl(const PCI_IO_ADDR addr, - void *buf, unsigned long count) -{ - __do_readsl(addr, buf, count); - celleb_io_flush(addr); -} - -static void celleb_memcpy_fromio(void *dest, - const PCI_IO_ADDR src, - unsigned long n) -{ - __do_memcpy_fromio(dest, src, n); - celleb_io_flush(src); -} - -static void __iomem *celleb_ioremap(unsigned long addr, - unsigned long size, - unsigned long flags) -{ - struct celleb_pci_bus *bus; - void __iomem *res = __ioremap(addr, size, flags); - int busno; - - bus = celleb_pci_find(0, addr); - if (bus != NULL) { - busno = bus - celleb_pci_busses; - PCI_SET_ADDR_TOKEN(res, busno + 1); - } - return res; -} - -static void celleb_iounmap(volatile void __iomem *addr) -{ - return __iounmap(PCI_FIX_ADDR(addr)); -} - -static struct ppc_pci_io celleb_pci_io __initdata = { - .readb = celleb_readb, - .readw = celleb_readw, - .readl = celleb_readl, - .readq = celleb_readq, - .readw_be = celleb_readw_be, - .readl_be = celleb_readl_be, - .readq_be = celleb_readq_be, - .readsb = celleb_readsb, - .readsw = celleb_readsw, - .readsl = celleb_readsl, - .memcpy_fromio = celleb_memcpy_fromio, -}; - -void __init celleb_pci_add_one(struct pci_controller *phb, - void (*dummy_read)(struct pci_controller *)) -{ - struct celleb_pci_bus *bus = &celleb_pci_busses[celleb_pci_count]; - struct device_node *np = phb->dn; - - if (celleb_pci_count >= MAX_CELLEB_PCI_BUS) { - printk(KERN_ERR "Too many pci bridges, workarounds" - " disabled for %s\n", np->full_name); - return; - } - - celleb_pci_count++; - - bus->phb = phb; - bus->dummy_read = dummy_read; -} - -static struct of_device_id celleb_pci_workaround_match[] __initdata = { - { - .name = "pci-pseudo", - .data = fake_pci_workaround_init, - }, { - .name = "epci", - .data = epci_workaround_init, - }, { - }, -}; - -int __init celleb_pci_workaround_init(void) -{ - struct pci_controller *phb; - struct device_node *node; - const struct of_device_id *match; - void (*init_func)(struct pci_controller *); - - celleb_dummy_page_va = kmalloc(PAGE_SIZE, GFP_KERNEL); - if (!celleb_dummy_page_va) { - printk(KERN_ERR "Celleb: dummy read disabled. " - "Alloc celleb_dummy_page_va failed\n"); - return 1; - } - - list_for_each_entry(phb, &hose_list, list_node) { - node = phb->dn; - match = of_match_node(celleb_pci_workaround_match, node); - - if (match) { - init_func = match->data; - (*init_func)(phb); - } - } - - ppc_pci_io = celleb_pci_io; - ppc_md.ioremap = celleb_ioremap; - ppc_md.iounmap = celleb_iounmap; - - return 0; -} |