diff options
Diffstat (limited to 'arch/ppc/syslib/mpc10x_common.c')
| -rw-r--r-- | arch/ppc/syslib/mpc10x_common.c | 654 |
1 files changed, 0 insertions, 654 deletions
diff --git a/arch/ppc/syslib/mpc10x_common.c b/arch/ppc/syslib/mpc10x_common.c deleted file mode 100644 index 437a294..0000000 --- a/arch/ppc/syslib/mpc10x_common.c +++ /dev/null @@ -1,654 +0,0 @@ -/* - * Common routines for the Motorola SPS MPC106, MPC107 and MPC8240 Host bridge, - * Mem ctlr, EPIC, etc. - * - * Author: Mark A. Greer - * mgreer@mvista.com - * - * 2001 (c) MontaVista, Software, Inc. 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. - */ - -/* - * *** WARNING - A BAT MUST be set to access the PCI config addr/data regs *** - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/slab.h> -#include <linux/serial_8250.h> -#include <linux/fsl_devices.h> -#include <linux/device.h> - -#include <asm/byteorder.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/uaccess.h> -#include <asm/machdep.h> -#include <asm/pci-bridge.h> -#include <asm/open_pic.h> -#include <asm/mpc10x.h> -#include <asm/ppc_sys.h> - -#ifdef CONFIG_MPC10X_OPENPIC -#ifdef CONFIG_EPIC_SERIAL_MODE -#define EPIC_IRQ_BASE (epic_serial_mode ? 16 : 5) -#else -#define EPIC_IRQ_BASE 5 -#endif -#define MPC10X_I2C_IRQ (EPIC_IRQ_BASE + NUM_8259_INTERRUPTS) -#define MPC10X_DMA0_IRQ (EPIC_IRQ_BASE + 1 + NUM_8259_INTERRUPTS) -#define MPC10X_DMA1_IRQ (EPIC_IRQ_BASE + 2 + NUM_8259_INTERRUPTS) -#define MPC10X_UART0_IRQ (EPIC_IRQ_BASE + 4 + NUM_8259_INTERRUPTS) -#define MPC10X_UART1_IRQ (EPIC_IRQ_BASE + 5 + NUM_8259_INTERRUPTS) -#else -#define MPC10X_I2C_IRQ -1 -#define MPC10X_DMA0_IRQ -1 -#define MPC10X_DMA1_IRQ -1 -#define MPC10X_UART0_IRQ -1 -#define MPC10X_UART1_IRQ -1 -#endif - -static struct fsl_i2c_platform_data mpc10x_i2c_pdata = { - .device_flags = 0, -}; - -static struct plat_serial8250_port serial_plat_uart0[] = { - [0] = { - .mapbase = 0x4500, - .iotype = UPIO_MEM, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, - }, - { }, -}; -static struct plat_serial8250_port serial_plat_uart1[] = { - [0] = { - .mapbase = 0x4600, - .iotype = UPIO_MEM, - .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, - }, - { }, -}; - -struct platform_device ppc_sys_platform_devices[] = { - [MPC10X_IIC1] = { - .name = "fsl-i2c", - .id = 1, - .dev.platform_data = &mpc10x_i2c_pdata, - .num_resources = 2, - .resource = (struct resource[]) { - { - .start = MPC10X_EUMB_I2C_OFFSET, - .end = MPC10X_EUMB_I2C_OFFSET + - MPC10X_EUMB_I2C_SIZE - 1, - .flags = IORESOURCE_MEM, - }, - { - .flags = IORESOURCE_IRQ - }, - }, - }, - [MPC10X_DMA0] = { - .name = "fsl-dma", - .id = 0, - .num_resources = 2, - .resource = (struct resource[]) { - { - .start = MPC10X_EUMB_DMA_OFFSET + 0x10, - .end = MPC10X_EUMB_DMA_OFFSET + 0x1f, - .flags = IORESOURCE_MEM, - }, - { - .flags = IORESOURCE_IRQ, - }, - }, - }, - [MPC10X_DMA1] = { - .name = "fsl-dma", - .id = 1, - .num_resources = 2, - .resource = (struct resource[]) { - { - .start = MPC10X_EUMB_DMA_OFFSET + 0x20, - .end = MPC10X_EUMB_DMA_OFFSET + 0x2f, - .flags = IORESOURCE_MEM, - }, - { - .flags = IORESOURCE_IRQ, - }, - }, - }, - [MPC10X_DMA1] = { - .name = "fsl-dma", - .id = 1, - .num_resources = 2, - .resource = (struct resource[]) { - { - .start = MPC10X_EUMB_DMA_OFFSET + 0x20, - .end = MPC10X_EUMB_DMA_OFFSET + 0x2f, - .flags = IORESOURCE_MEM, - }, - { - .flags = IORESOURCE_IRQ, - }, - }, - }, - [MPC10X_UART0] = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM, - .dev.platform_data = serial_plat_uart0, - }, - [MPC10X_UART1] = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM1, - .dev.platform_data = serial_plat_uart1, - }, - -}; - -/* We use the PCI ID to match on */ -struct ppc_sys_spec *cur_ppc_sys_spec; -struct ppc_sys_spec ppc_sys_specs[] = { - { - .ppc_sys_name = "8245", - .mask = 0xFFFFFFFF, - .value = MPC10X_BRIDGE_8245, - .num_devices = 5, - .device_list = (enum ppc_sys_devices[]) - { - MPC10X_IIC1, MPC10X_DMA0, MPC10X_DMA1, MPC10X_UART0, MPC10X_UART1, - }, - }, - { - .ppc_sys_name = "8240", - .mask = 0xFFFFFFFF, - .value = MPC10X_BRIDGE_8240, - .num_devices = 3, - .device_list = (enum ppc_sys_devices[]) - { - MPC10X_IIC1, MPC10X_DMA0, MPC10X_DMA1, - }, - }, - { - .ppc_sys_name = "107", - .mask = 0xFFFFFFFF, - .value = MPC10X_BRIDGE_107, - .num_devices = 3, - .device_list = (enum ppc_sys_devices[]) - { - MPC10X_IIC1, MPC10X_DMA0, MPC10X_DMA1, - }, - }, - { /* default match */ - .ppc_sys_name = "", - .mask = 0x00000000, - .value = 0x00000000, - }, -}; - -/* - * mach_mpc10x_fixup: This function enables DUART mode if it detects - * if it detects two UARTS in the platform device entries. - */ -static int __init mach_mpc10x_fixup(struct platform_device *pdev) -{ - if (strncmp (pdev->name, "serial8250", 10) == 0 && pdev->id == 1) - writeb(readb(serial_plat_uart1[0].membase + 0x11) | 0x1, - serial_plat_uart1[0].membase + 0x11); - return 0; -} - -static int __init mach_mpc10x_init(void) -{ - ppc_sys_device_fixup = mach_mpc10x_fixup; - return 0; -} -postcore_initcall(mach_mpc10x_init); - -/* Set resources to match bridge memory map */ -void __init -mpc10x_bridge_set_resources(int map, struct pci_controller *hose) -{ - - switch (map) { - case MPC10X_MEM_MAP_A: - pci_init_resource(&hose->io_resource, - 0x00000000, - 0x3f7fffff, - IORESOURCE_IO, - "PCI host bridge"); - - pci_init_resource (&hose->mem_resources[0], - 0xc0000000, - 0xfeffffff, - IORESOURCE_MEM, - "PCI host bridge"); - break; - case MPC10X_MEM_MAP_B: - pci_init_resource(&hose->io_resource, - 0x00000000, - 0x00bfffff, - IORESOURCE_IO, - "PCI host bridge"); - - pci_init_resource (&hose->mem_resources[0], - 0x80000000, - 0xfcffffff, - IORESOURCE_MEM, - "PCI host bridge"); - break; - default: - printk("mpc10x_bridge_set_resources: " - "Invalid map specified\n"); - if (ppc_md.progress) - ppc_md.progress("mpc10x:exit1", 0x100); - } -} - -/* - * Do some initialization and put the EUMB registers at the specified address - * (also map the EPIC registers into virtual space--OpenPIC_Addr will be set). - * - * The EPIC is not on the 106, only the 8240 and 107. - */ -int __init -mpc10x_bridge_init(struct pci_controller *hose, - uint current_map, - uint new_map, - uint phys_eumb_base) -{ - int host_bridge, picr1, picr1_bit, i; - ulong pci_config_addr, pci_config_data; - u_char pir, byte; - - if (ppc_md.progress) ppc_md.progress("mpc10x:enter", 0x100); - - /* Set up for current map so we can get at config regs */ - switch (current_map) { - case MPC10X_MEM_MAP_A: - setup_indirect_pci(hose, - MPC10X_MAPA_CNFG_ADDR, - MPC10X_MAPA_CNFG_DATA); - break; - case MPC10X_MEM_MAP_B: - setup_indirect_pci(hose, - MPC10X_MAPB_CNFG_ADDR, - MPC10X_MAPB_CNFG_DATA); - break; - default: - printk("mpc10x_bridge_init: %s\n", - "Invalid current map specified"); - if (ppc_md.progress) - ppc_md.progress("mpc10x:exit1", 0x100); - return -1; - } - - /* Make sure it's a supported bridge */ - early_read_config_dword(hose, - 0, - PCI_DEVFN(0,0), - PCI_VENDOR_ID, - &host_bridge); - - switch (host_bridge) { - case MPC10X_BRIDGE_106: - case MPC10X_BRIDGE_8240: - case MPC10X_BRIDGE_107: - case MPC10X_BRIDGE_8245: - break; - default: - if (ppc_md.progress) - ppc_md.progress("mpc10x:exit2", 0x100); - return -1; - } - - switch (new_map) { - case MPC10X_MEM_MAP_A: - MPC10X_SETUP_HOSE(hose, A); - pci_config_addr = MPC10X_MAPA_CNFG_ADDR; - pci_config_data = MPC10X_MAPA_CNFG_DATA; - picr1_bit = MPC10X_CFG_PICR1_ADDR_MAP_A; - break; - case MPC10X_MEM_MAP_B: - MPC10X_SETUP_HOSE(hose, B); - pci_config_addr = MPC10X_MAPB_CNFG_ADDR; - pci_config_data = MPC10X_MAPB_CNFG_DATA; - picr1_bit = MPC10X_CFG_PICR1_ADDR_MAP_B; - break; - default: - printk("mpc10x_bridge_init: %s\n", - "Invalid new map specified"); - if (ppc_md.progress) - ppc_md.progress("mpc10x:exit3", 0x100); - return -1; - } - - /* Make bridge use the 'new_map', if not already usng it */ - if (current_map != new_map) { - early_read_config_dword(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, - &picr1); - - picr1 = (picr1 & ~MPC10X_CFG_PICR1_ADDR_MAP_MASK) | - picr1_bit; - - early_write_config_dword(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, - picr1); - - asm volatile("sync"); - - /* Undo old mappings & map in new cfg data/addr regs */ - iounmap((void *)hose->cfg_addr); - iounmap((void *)hose->cfg_data); - - setup_indirect_pci(hose, - pci_config_addr, - pci_config_data); - } - - /* Setup resources to match map */ - mpc10x_bridge_set_resources(new_map, hose); - - /* - * Want processor accesses of 0xFDxxxxxx to be mapped - * to PCI memory space at 0x00000000. Do not want - * host bridge to respond to PCI memory accesses of - * 0xFDxxxxxx. Do not want host bridge to respond - * to PCI memory addresses 0xFD000000-0xFDFFFFFF; - * want processor accesses from 0x000A0000-0x000BFFFF - * to be forwarded to system memory. - * - * Only valid if not in agent mode and using MAP B. - */ - if (new_map == MPC10X_MEM_MAP_B) { - early_read_config_byte(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_MAPB_OPTIONS_REG, - &byte); - - byte &= ~(MPC10X_CFG_MAPB_OPTIONS_PFAE | - MPC10X_CFG_MAPB_OPTIONS_PCICH | - MPC10X_CFG_MAPB_OPTIONS_PROCCH); - - if (host_bridge != MPC10X_BRIDGE_106) { - byte |= MPC10X_CFG_MAPB_OPTIONS_CFAE; - } - - early_write_config_byte(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_MAPB_OPTIONS_REG, - byte); - } - - if (host_bridge != MPC10X_BRIDGE_106) { - early_read_config_byte(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_PIR_REG, - &pir); - - if (pir != MPC10X_CFG_PIR_HOST_BRIDGE) { - printk("Host bridge in Agent mode\n"); - /* Read or Set LMBAR & PCSRBAR? */ - } - - /* Set base addr of the 8240/107 EUMB. */ - early_write_config_dword(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_EUMBBAR, - phys_eumb_base); -#ifdef CONFIG_MPC10X_OPENPIC - /* Map EPIC register part of EUMB into vitual memory - PCORE - uses an i8259 instead of EPIC. */ - OpenPIC_Addr = - ioremap(phys_eumb_base + MPC10X_EUMB_EPIC_OFFSET, - MPC10X_EUMB_EPIC_SIZE); -#endif - } - -#ifdef CONFIG_MPC10X_STORE_GATHERING - mpc10x_enable_store_gathering(hose); -#else - mpc10x_disable_store_gathering(hose); -#endif - - /* setup platform devices for MPC10x bridges */ - identify_ppc_sys_by_id (host_bridge); - - for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) { - unsigned int dev_id = cur_ppc_sys_spec->device_list[i]; - ppc_sys_fixup_mem_resource(&ppc_sys_platform_devices[dev_id], - phys_eumb_base); - } - - /* IRQs are determined at runtime */ - ppc_sys_platform_devices[MPC10X_IIC1].resource[1].start = MPC10X_I2C_IRQ; - ppc_sys_platform_devices[MPC10X_IIC1].resource[1].end = MPC10X_I2C_IRQ; - ppc_sys_platform_devices[MPC10X_DMA0].resource[1].start = MPC10X_DMA0_IRQ; - ppc_sys_platform_devices[MPC10X_DMA0].resource[1].end = MPC10X_DMA0_IRQ; - ppc_sys_platform_devices[MPC10X_DMA1].resource[1].start = MPC10X_DMA1_IRQ; - ppc_sys_platform_devices[MPC10X_DMA1].resource[1].end = MPC10X_DMA1_IRQ; - - serial_plat_uart0[0].mapbase += phys_eumb_base; - serial_plat_uart0[0].irq = MPC10X_UART0_IRQ; - serial_plat_uart0[0].membase = ioremap(serial_plat_uart0[0].mapbase, 0x100); - - serial_plat_uart1[0].mapbase += phys_eumb_base; - serial_plat_uart1[0].irq = MPC10X_UART1_IRQ; - serial_plat_uart1[0].membase = ioremap(serial_plat_uart1[0].mapbase, 0x100); - - /* - * 8240 erratum 26, 8241/8245 erratum 29, 107 erratum 23: speculative - * PCI reads may return stale data so turn off. - */ - if ((host_bridge == MPC10X_BRIDGE_8240) - || (host_bridge == MPC10X_BRIDGE_8245) - || (host_bridge == MPC10X_BRIDGE_107)) { - - early_read_config_dword(hose, 0, PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, &picr1); - - picr1 &= ~MPC10X_CFG_PICR1_SPEC_PCI_RD; - - early_write_config_dword(hose, 0, PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, picr1); - } - - /* - * 8241/8245 erratum 28: PCI reads from local memory may return - * stale data. Workaround by setting PICR2[0] to disable copyback - * optimization. Oddly, the latest available user manual for the - * 8245 (Rev 2., dated 10/2003) says PICR2[0] is reserverd. - */ - if (host_bridge == MPC10X_BRIDGE_8245) { - u32 picr2; - - early_read_config_dword(hose, 0, PCI_DEVFN(0,0), - MPC10X_CFG_PICR2_REG, &picr2); - - picr2 |= MPC10X_CFG_PICR2_COPYBACK_OPT; - - early_write_config_dword(hose, 0, PCI_DEVFN(0,0), - MPC10X_CFG_PICR2_REG, picr2); - } - - if (ppc_md.progress) ppc_md.progress("mpc10x:exit", 0x100); - return 0; -} - -/* - * Need to make our own PCI config space access macros because - * mpc10x_get_mem_size() is called before the data structures are set up for - * the 'early_xxx' and 'indirect_xxx' routines to work. - * Assumes bus 0. - */ -#define MPC10X_CFG_read(val, addr, type, op) *val = op((type)(addr)) -#define MPC10X_CFG_write(val, addr, type, op) op((type *)(addr), (val)) - -#define MPC10X_PCI_OP(rw, size, type, op, mask) \ -static void \ -mpc10x_##rw##_config_##size(uint *cfg_addr, uint *cfg_data, int devfn, int offset, type val) \ -{ \ - out_be32(cfg_addr, \ - ((offset & 0xfc) << 24) | (devfn << 16) \ - | (0 << 8) | 0x80); \ - MPC10X_CFG_##rw(val, cfg_data + (offset & mask), type, op); \ - return; \ -} - -MPC10X_PCI_OP(read, byte, u8 *, in_8, 3) -MPC10X_PCI_OP(read, dword, u32 *, in_le32, 0) -#if 0 /* Not used */ -MPC10X_PCI_OP(write, byte, u8, out_8, 3) -MPC10X_PCI_OP(read, word, u16 *, in_le16, 2) -MPC10X_PCI_OP(write, word, u16, out_le16, 2) -MPC10X_PCI_OP(write, dword, u32, out_le32, 0) -#endif - -/* - * Read the memory controller registers to determine the amount of memory in - * the system. This assumes that the firmware has correctly set up the memory - * controller registers. - */ -unsigned long __init -mpc10x_get_mem_size(uint mem_map) -{ - uint *config_addr, *config_data, val; - ulong start, end, total, offset; - int i; - u_char bank_enables; - - switch (mem_map) { - case MPC10X_MEM_MAP_A: - config_addr = (uint *)MPC10X_MAPA_CNFG_ADDR; - config_data = (uint *)MPC10X_MAPA_CNFG_DATA; - break; - case MPC10X_MEM_MAP_B: - config_addr = (uint *)MPC10X_MAPB_CNFG_ADDR; - config_data = (uint *)MPC10X_MAPB_CNFG_DATA; - break; - default: - return 0; - } - - mpc10x_read_config_byte(config_addr, - config_data, - PCI_DEVFN(0,0), - MPC10X_MCTLR_MEM_BANK_ENABLES, - &bank_enables); - - total = 0; - - for (i=0; i<8; i++) { - if (bank_enables & (1 << i)) { - offset = MPC10X_MCTLR_MEM_START_1 + ((i > 3) ? 4 : 0); - mpc10x_read_config_dword(config_addr, - config_data, - PCI_DEVFN(0,0), - offset, - &val); - start = (val >> ((i & 3) << 3)) & 0xff; - - offset = MPC10X_MCTLR_EXT_MEM_START_1 + ((i>3) ? 4 : 0); - mpc10x_read_config_dword(config_addr, - config_data, - PCI_DEVFN(0,0), - offset, - &val); - val = (val >> ((i & 3) << 3)) & 0x03; - start = (val << 28) | (start << 20); - - offset = MPC10X_MCTLR_MEM_END_1 + ((i > 3) ? 4 : 0); - mpc10x_read_config_dword(config_addr, - config_data, - PCI_DEVFN(0,0), - offset, - &val); - end = (val >> ((i & 3) << 3)) & 0xff; - - offset = MPC10X_MCTLR_EXT_MEM_END_1 + ((i > 3) ? 4 : 0); - mpc10x_read_config_dword(config_addr, - config_data, - PCI_DEVFN(0,0), - offset, - &val); - val = (val >> ((i & 3) << 3)) & 0x03; - end = (val << 28) | (end << 20) | 0xfffff; - - total += (end - start + 1); - } - } - - return total; -} - -int __init -mpc10x_enable_store_gathering(struct pci_controller *hose) -{ - uint picr1; - - early_read_config_dword(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, - &picr1); - - picr1 |= MPC10X_CFG_PICR1_ST_GATH_EN; - - early_write_config_dword(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, - picr1); - - return 0; -} - -int __init -mpc10x_disable_store_gathering(struct pci_controller *hose) -{ - uint picr1; - - early_read_config_dword(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, - &picr1); - - picr1 &= ~MPC10X_CFG_PICR1_ST_GATH_EN; - - early_write_config_dword(hose, - 0, - PCI_DEVFN(0,0), - MPC10X_CFG_PICR1_REG, - picr1); - - return 0; -} - -#ifdef CONFIG_MPC10X_OPENPIC -void __init mpc10x_set_openpic(void) -{ - /* Map external IRQs */ - openpic_set_sources(0, EPIC_IRQ_BASE, OpenPIC_Addr + 0x10200); - /* Skip reserved space and map i2c and DMA Ch[01] */ - openpic_set_sources(EPIC_IRQ_BASE, 3, OpenPIC_Addr + 0x11020); - /* Skip reserved space and map Message Unit Interrupt (I2O) */ - openpic_set_sources(EPIC_IRQ_BASE + 3, 1, OpenPIC_Addr + 0x110C0); - /* Skip reserved space and map Serial Interrupts */ - openpic_set_sources(EPIC_IRQ_BASE + 4, 2, OpenPIC_Addr + 0x11120); - - openpic_init(NUM_8259_INTERRUPTS); -} -#endif |
