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author | Florian Fainelli <florian@openwrt.org> | 2010-01-31 21:00:50 +0000 |
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committer | Florian Fainelli <florian@openwrt.org> | 2010-01-31 21:00:50 +0000 |
commit | a300ad427a326ec86bbb47bc54c604f698f50fde (patch) | |
tree | d1c96d3d47d05d91e1c8739777e8cc30b038c3b9 /target/linux/brcm63xx/files/arch/mips/pci/ops-bcm63xx.c | |
parent | 5c81e8d45c0774bb4f4a50ef156d2ce490807c8e (diff) | |
download | master-187ad058-a300ad427a326ec86bbb47bc54c604f698f50fde.tar.gz master-187ad058-a300ad427a326ec86bbb47bc54c604f698f50fde.tar.bz2 master-187ad058-a300ad427a326ec86bbb47bc54c604f698f50fde.zip |
[brcm63xx] move files to files-2.6.30, to ease newer kernel integration
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19471 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm63xx/files/arch/mips/pci/ops-bcm63xx.c')
-rw-r--r-- | target/linux/brcm63xx/files/arch/mips/pci/ops-bcm63xx.c | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/target/linux/brcm63xx/files/arch/mips/pci/ops-bcm63xx.c b/target/linux/brcm63xx/files/arch/mips/pci/ops-bcm63xx.c deleted file mode 100644 index 822ae179bc..0000000000 --- a/target/linux/brcm63xx/files/arch/mips/pci/ops-bcm63xx.c +++ /dev/null @@ -1,467 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> - */ - -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/io.h> - -#include "pci-bcm63xx.h" - -/* - * swizzle 32bits data to return only the needed part - */ -static int postprocess_read(u32 data, int where, unsigned int size) -{ - u32 ret; - - ret = 0; - switch (size) { - case 1: - ret = (data >> ((where & 3) << 3)) & 0xff; - break; - case 2: - ret = (data >> ((where & 3) << 3)) & 0xffff; - break; - case 4: - ret = data; - break; - } - return ret; -} - -static int preprocess_write(u32 orig_data, u32 val, int where, - unsigned int size) -{ - u32 ret; - - ret = 0; - switch (size) { - case 1: - ret = (orig_data & ~(0xff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - break; - case 2: - ret = (orig_data & ~(0xffff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - break; - case 4: - ret = val; - break; - } - return ret; -} - -/* - * setup hardware for a configuration cycle with given parameters - */ -static int bcm63xx_setup_cfg_access(int type, unsigned int busn, - unsigned int devfn, int where) -{ - unsigned int slot, func, reg; - u32 val; - - slot = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); - reg = where >> 2; - - /* sanity check */ - if (slot > (MPI_L2PCFG_DEVNUM_MASK >> MPI_L2PCFG_DEVNUM_SHIFT)) - return 1; - - if (func > (MPI_L2PCFG_FUNC_MASK >> MPI_L2PCFG_FUNC_SHIFT)) - return 1; - - if (reg > (MPI_L2PCFG_REG_MASK >> MPI_L2PCFG_REG_SHIFT)) - return 1; - - /* ok, setup config access */ - val = (reg << MPI_L2PCFG_REG_SHIFT); - val |= (func << MPI_L2PCFG_FUNC_SHIFT); - val |= (slot << MPI_L2PCFG_DEVNUM_SHIFT); - val |= MPI_L2PCFG_CFG_USEREG_MASK; - val |= MPI_L2PCFG_CFG_SEL_MASK; - /* type 0 cycle for local bus, type 1 cycle for anything else */ - if (type != 0) { - /* FIXME: how to specify bus ??? */ - val |= (1 << MPI_L2PCFG_CFG_TYPE_SHIFT); - } - bcm_mpi_writel(val, MPI_L2PCFG_REG); - - return 0; -} - -static int bcm63xx_do_cfg_read(int type, unsigned int busn, - unsigned int devfn, int where, int size, - u32 *val) -{ - u32 data; - - /* two phase cycle, first we write address, then read data at - * another location, caller already has a spinlock so no need - * to add one here */ - if (bcm63xx_setup_cfg_access(type, busn, devfn, where)) - return PCIBIOS_DEVICE_NOT_FOUND; - iob(); - data = le32_to_cpu(__raw_readl(pci_iospace_start)); - /* restore IO space normal behaviour */ - bcm_mpi_writel(0, MPI_L2PCFG_REG); - - *val = postprocess_read(data, where, size); - - return PCIBIOS_SUCCESSFUL; -} - -static int bcm63xx_do_cfg_write(int type, unsigned int busn, - unsigned int devfn, int where, int size, - u32 val) -{ - u32 data; - - /* two phase cycle, first we write address, then write data to - * another location, caller already has a spinlock so no need - * to add one here */ - if (bcm63xx_setup_cfg_access(type, busn, devfn, where)) - return PCIBIOS_DEVICE_NOT_FOUND; - iob(); - - data = le32_to_cpu(__raw_readl(pci_iospace_start)); - data = preprocess_write(data, val, where, size); - - __raw_writel(cpu_to_le32(data), pci_iospace_start); - wmb(); - /* no way to know the access is done, we have to wait */ - udelay(500); - /* restore IO space normal behaviour */ - bcm_mpi_writel(0, MPI_L2PCFG_REG); - - return PCIBIOS_SUCCESSFUL; -} - -static int bcm63xx_pci_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - int type; - - type = bus->parent ? 1 : 0; - - if (type == 0 && PCI_SLOT(devfn) == CARDBUS_PCI_IDSEL) - return PCIBIOS_DEVICE_NOT_FOUND; - - return bcm63xx_do_cfg_read(type, bus->number, devfn, - where, size, val); -} - -static int bcm63xx_pci_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - int type; - - type = bus->parent ? 1 : 0; - - if (type == 0 && PCI_SLOT(devfn) == CARDBUS_PCI_IDSEL) - return PCIBIOS_DEVICE_NOT_FOUND; - - return bcm63xx_do_cfg_write(type, bus->number, devfn, - where, size, val); -} - -struct pci_ops bcm63xx_pci_ops = { - .read = bcm63xx_pci_read, - .write = bcm63xx_pci_write -}; - -#ifdef CONFIG_CARDBUS -/* - * emulate configuration read access on a cardbus bridge - */ -#define FAKE_CB_BRIDGE_SLOT 0x1e - -static int fake_cb_bridge_bus_number = -1; - -static struct { - u16 pci_command; - u8 cb_latency; - u8 subordinate_busn; - u8 cardbus_busn; - u8 pci_busn; - int bus_assigned; - u16 bridge_control; - - u32 mem_base0; - u32 mem_limit0; - u32 mem_base1; - u32 mem_limit1; - - u32 io_base0; - u32 io_limit0; - u32 io_base1; - u32 io_limit1; -} fake_cb_bridge_regs; - -static int fake_cb_bridge_read(int where, int size, u32 *val) -{ - unsigned int reg; - u32 data; - - data = 0; - reg = where >> 2; - switch (reg) { - case (PCI_VENDOR_ID >> 2): - case (PCI_CB_SUBSYSTEM_VENDOR_ID >> 2): - /* create dummy vendor/device id from our cpu id */ - data = (bcm63xx_get_cpu_id() << 16) | PCI_VENDOR_ID_BROADCOM; - break; - - case (PCI_COMMAND >> 2): - data = (PCI_STATUS_DEVSEL_SLOW << 16); - data |= fake_cb_bridge_regs.pci_command; - break; - - case (PCI_CLASS_REVISION >> 2): - data = (PCI_CLASS_BRIDGE_CARDBUS << 16); - break; - - case (PCI_CACHE_LINE_SIZE >> 2): - data = (PCI_HEADER_TYPE_CARDBUS << 16); - break; - - case (PCI_INTERRUPT_LINE >> 2): - /* bridge control */ - data = (fake_cb_bridge_regs.bridge_control << 16); - /* pin:intA line:0xff */ - data |= (0x1 << 8) | 0xff; - break; - - case (PCI_CB_PRIMARY_BUS >> 2): - data = (fake_cb_bridge_regs.cb_latency << 24); - data |= (fake_cb_bridge_regs.subordinate_busn << 16); - data |= (fake_cb_bridge_regs.cardbus_busn << 8); - data |= fake_cb_bridge_regs.pci_busn; - break; - - case (PCI_CB_MEMORY_BASE_0 >> 2): - data = fake_cb_bridge_regs.mem_base0; - break; - - case (PCI_CB_MEMORY_LIMIT_0 >> 2): - data = fake_cb_bridge_regs.mem_limit0; - break; - - case (PCI_CB_MEMORY_BASE_1 >> 2): - data = fake_cb_bridge_regs.mem_base1; - break; - - case (PCI_CB_MEMORY_LIMIT_1 >> 2): - data = fake_cb_bridge_regs.mem_limit1; - break; - - case (PCI_CB_IO_BASE_0 >> 2): - /* | 1 for 32bits io support */ - data = fake_cb_bridge_regs.io_base0 | 0x1; - break; - - case (PCI_CB_IO_LIMIT_0 >> 2): - data = fake_cb_bridge_regs.io_limit0; - break; - - case (PCI_CB_IO_BASE_1 >> 2): - /* | 1 for 32bits io support */ - data = fake_cb_bridge_regs.io_base1 | 0x1; - break; - - case (PCI_CB_IO_LIMIT_1 >> 2): - data = fake_cb_bridge_regs.io_limit1; - break; - } - - *val = postprocess_read(data, where, size); - return PCIBIOS_SUCCESSFUL; -} - -/* - * emulate configuration write access on a cardbus bridge - */ -static int fake_cb_bridge_write(int where, int size, u32 val) -{ - unsigned int reg; - u32 data, tmp; - int ret; - - ret = fake_cb_bridge_read((where & ~0x3), 4, &data); - if (ret != PCIBIOS_SUCCESSFUL) - return ret; - - data = preprocess_write(data, val, where, size); - - reg = where >> 2; - switch (reg) { - case (PCI_COMMAND >> 2): - fake_cb_bridge_regs.pci_command = (data & 0xffff); - break; - - case (PCI_CB_PRIMARY_BUS >> 2): - fake_cb_bridge_regs.cb_latency = (data >> 24) & 0xff; - fake_cb_bridge_regs.subordinate_busn = (data >> 16) & 0xff; - fake_cb_bridge_regs.cardbus_busn = (data >> 8) & 0xff; - fake_cb_bridge_regs.pci_busn = data & 0xff; - if (fake_cb_bridge_regs.cardbus_busn) - fake_cb_bridge_regs.bus_assigned = 1; - break; - - case (PCI_INTERRUPT_LINE >> 2): - tmp = (data >> 16) & 0xffff; - /* disable memory prefetch support */ - tmp &= ~PCI_CB_BRIDGE_CTL_PREFETCH_MEM0; - tmp &= ~PCI_CB_BRIDGE_CTL_PREFETCH_MEM1; - fake_cb_bridge_regs.bridge_control = tmp; - break; - - case (PCI_CB_MEMORY_BASE_0 >> 2): - fake_cb_bridge_regs.mem_base0 = data; - break; - - case (PCI_CB_MEMORY_LIMIT_0 >> 2): - fake_cb_bridge_regs.mem_limit0 = data; - break; - - case (PCI_CB_MEMORY_BASE_1 >> 2): - fake_cb_bridge_regs.mem_base1 = data; - break; - - case (PCI_CB_MEMORY_LIMIT_1 >> 2): - fake_cb_bridge_regs.mem_limit1 = data; - break; - - case (PCI_CB_IO_BASE_0 >> 2): - fake_cb_bridge_regs.io_base0 = data; - break; - - case (PCI_CB_IO_LIMIT_0 >> 2): - fake_cb_bridge_regs.io_limit0 = data; - break; - - case (PCI_CB_IO_BASE_1 >> 2): - fake_cb_bridge_regs.io_base1 = data; - break; - - case (PCI_CB_IO_LIMIT_1 >> 2): - fake_cb_bridge_regs.io_limit1 = data; - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int bcm63xx_cb_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - /* snoop access to slot 0x1e on root bus, we fake a cardbus - * bridge at this location */ - if (!bus->parent && PCI_SLOT(devfn) == FAKE_CB_BRIDGE_SLOT) { - fake_cb_bridge_bus_number = bus->number; - return fake_cb_bridge_read(where, size, val); - } - - /* a configuration cycle for the device behind the cardbus - * bridge is actually done as a type 0 cycle on the primary - * bus. This means that only one device can be on the cardbus - * bus */ - if (fake_cb_bridge_regs.bus_assigned && - bus->number == fake_cb_bridge_regs.cardbus_busn && - PCI_SLOT(devfn) == 0) - return bcm63xx_do_cfg_read(0, 0, - PCI_DEVFN(CARDBUS_PCI_IDSEL, 0), - where, size, val); - - return PCIBIOS_DEVICE_NOT_FOUND; -} - -static int bcm63xx_cb_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - if (!bus->parent && PCI_SLOT(devfn) == FAKE_CB_BRIDGE_SLOT) { - fake_cb_bridge_bus_number = bus->number; - return fake_cb_bridge_write(where, size, val); - } - - if (fake_cb_bridge_regs.bus_assigned && - bus->number == fake_cb_bridge_regs.cardbus_busn && - PCI_SLOT(devfn) == 0) - return bcm63xx_do_cfg_write(0, 0, - PCI_DEVFN(CARDBUS_PCI_IDSEL, 0), - where, size, val); - - return PCIBIOS_DEVICE_NOT_FOUND; -} - -struct pci_ops bcm63xx_cb_ops = { - .read = bcm63xx_cb_read, - .write = bcm63xx_cb_write, -}; - -/* - * only one IO window, so it cannot be shared by PCI and cardbus, use - * fixup to choose and detect unhandled configuration - */ -static void bcm63xx_fixup(struct pci_dev *dev) -{ - static int io_window = -1; - int i, found, new_io_window; - u32 val; - - /* look for any io resource */ - found = 0; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - if (pci_resource_flags(dev, i) & IORESOURCE_IO) { - found = 1; - break; - } - } - - if (!found) - return; - - /* skip our fake bus with only cardbus bridge on it */ - if (dev->bus->number == fake_cb_bridge_bus_number) - return; - - /* find on which bus the device is */ - if (fake_cb_bridge_regs.bus_assigned && - dev->bus->number == fake_cb_bridge_regs.cardbus_busn && - PCI_SLOT(dev->devfn) == 0) - new_io_window = 1; - else - new_io_window = 0; - - if (new_io_window == io_window) - return; - - if (io_window != -1) { - printk(KERN_ERR "bcm63xx: both PCI and cardbus devices " - "need IO, which hardware cannot do\n"); - return; - } - - printk(KERN_INFO "bcm63xx: PCI IO window assigned to %s\n", - (new_io_window == 0) ? "PCI" : "cardbus"); - - val = bcm_mpi_readl(MPI_L2PIOREMAP_REG); - if (io_window) - val |= MPI_L2PREMAP_IS_CARDBUS_MASK; - else - val &= ~MPI_L2PREMAP_IS_CARDBUS_MASK; - bcm_mpi_writel(val, MPI_L2PIOREMAP_REG); - - io_window = new_io_window; -} - -DECLARE_PCI_FIXUP_ENABLE(PCI_ANY_ID, PCI_ANY_ID, bcm63xx_fixup); -#endif |