diff options
Diffstat (limited to 'arch/ppc/platforms/prpmc800.c')
| -rw-r--r-- | arch/ppc/platforms/prpmc800.c | 472 |
1 files changed, 0 insertions, 472 deletions
diff --git a/arch/ppc/platforms/prpmc800.c b/arch/ppc/platforms/prpmc800.c deleted file mode 100644 index 5bcda7f92cd..00000000000 --- a/arch/ppc/platforms/prpmc800.c +++ /dev/null @@ -1,472 +0,0 @@ -/* - * Author: Dale Farnsworth <dale.farnsworth@mvista.com> - * - * 2001-2004 (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. - */ - -#include <linux/stddef.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/reboot.h> -#include <linux/pci.h> -#include <linux/kdev_t.h> -#include <linux/types.h> -#include <linux/major.h> -#include <linux/initrd.h> -#include <linux/console.h> -#include <linux/delay.h> -#include <linux/seq_file.h> -#include <linux/root_dev.h> -#include <linux/harrier_defs.h> - -#include <asm/byteorder.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/page.h> -#include <asm/dma.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/machdep.h> -#include <asm/time.h> -#include <asm/pci-bridge.h> -#include <asm/open_pic.h> -#include <asm/bootinfo.h> -#include <asm/harrier.h> - -#include "prpmc800.h" - -#define HARRIER_REVI_REG (PRPMC800_HARRIER_XCSR_BASE+HARRIER_REVI_OFF) -#define HARRIER_UCTL_REG (PRPMC800_HARRIER_XCSR_BASE+HARRIER_UCTL_OFF) -#define HARRIER_MISC_CSR_REG (PRPMC800_HARRIER_XCSR_BASE+HARRIER_MISC_CSR_OFF) -#define HARRIER_IFEVP_REG (PRPMC800_HARRIER_MPIC_BASE+HARRIER_MPIC_IFEVP_OFF) -#define HARRIER_IFEDE_REG (PRPMC800_HARRIER_MPIC_BASE+HARRIER_MPIC_IFEDE_OFF) -#define HARRIER_FEEN_REG (PRPMC800_HARRIER_XCSR_BASE+HARRIER_FEEN_OFF) -#define HARRIER_FEMA_REG (PRPMC800_HARRIER_XCSR_BASE+HARRIER_FEMA_OFF) - -#define HARRIER_VENI_REG (PRPMC800_HARRIER_XCSR_BASE + HARRIER_VENI_OFF) -#define HARRIER_MISC_CSR (PRPMC800_HARRIER_XCSR_BASE + \ - HARRIER_MISC_CSR_OFF) - -#define MONARCH (monarch != 0) -#define NON_MONARCH (monarch == 0) - -extern int mpic_init(void); -extern unsigned long loops_per_jiffy; -extern void gen550_progress(char *, unsigned short); - -static int monarch = 0; -static int found_self = 0; -static int self = 0; - -static u_char prpmc800_openpic_initsenses[] __initdata = -{ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_HOSTINT0 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_DEBUGINT */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_HARRIER_WDT */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_HOSTINT1 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_HOSTINT2 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_HOSTINT3 */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_PMC_INTA */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_PMC_INTB */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_PMC_INTC */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_PMC_INTD */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_UNUSED */ - (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* PRPMC800_INT_HARRIER_INT (UARTS, ABORT, DMA) */ -}; - -/* - * Motorola PrPMC750/PrPMC800 in PrPMCBASE or PrPMC-Carrier - * Combined irq tables. Only Base has IDSEL 14, only Carrier has 21 and 22. - */ -static inline int -prpmc_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) -{ - static char pci_irq_table[][4] = - /* - * PCI IDSEL/INTPIN->INTLINE - * A B C D - */ - { - {12, 0, 0, 0}, /* IDSEL 14 - Ethernet, base */ - {0, 0, 0, 0}, /* IDSEL 15 - unused */ - {10, 11, 12, 9}, /* IDSEL 16 - PMC A1, PMC1 */ - {10, 11, 12, 9}, /* IDSEL 17 - PrPMC-A-B, PMC2-B */ - {11, 12, 9, 10}, /* IDSEL 18 - PMC A1-B, PMC1-B */ - {0, 0, 0, 0}, /* IDSEL 19 - unused */ - {9, 10, 11, 12}, /* IDSEL 20 - P2P Bridge */ - {11, 12, 9, 10}, /* IDSEL 21 - PMC A2, carrier */ - {12, 9, 10, 11}, /* IDSEL 22 - PMC A2-B, carrier */ - }; - const long min_idsel = 14, max_idsel = 22, irqs_per_slot = 4; - return PCI_IRQ_TABLE_LOOKUP; -}; - -static int -prpmc_read_config_dword(struct pci_controller *hose, u8 bus, u8 devfn, - int offset, u32 * val) -{ - /* paranoia */ - if ((hose == NULL) || - (hose->cfg_addr == NULL) || (hose->cfg_data == NULL)) - return PCIBIOS_DEVICE_NOT_FOUND; - - out_be32(hose->cfg_addr, ((offset & 0xfc) << 24) | (devfn << 16) - | ((bus - hose->bus_offset) << 8) | 0x80); - *val = in_le32((u32 *) (hose->cfg_data + (offset & 3))); - - return PCIBIOS_SUCCESSFUL; -} - -#define HARRIER_PCI_VEND_DEV_ID (PCI_VENDOR_ID_MOTOROLA | \ - (PCI_DEVICE_ID_MOTOROLA_HARRIER << 16)) -static int prpmc_self(u8 bus, u8 devfn) -{ - /* - * Harriers always view themselves as being on bus 0. If we're not - * looking at bus 0, we're not going to find ourselves. - */ - if (bus != 0) - return PCIBIOS_DEVICE_NOT_FOUND; - else { - int result; - int val; - struct pci_controller *hose; - - hose = pci_bus_to_hose(bus); - - /* See if target device is a Harrier */ - result = prpmc_read_config_dword(hose, bus, devfn, - PCI_VENDOR_ID, &val); - if ((result != PCIBIOS_SUCCESSFUL) || - (val != HARRIER_PCI_VEND_DEV_ID)) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* - * LBA bit is set if target Harrier == initiating Harrier - * (i.e. if we are reading our own PCI header). - */ - result = prpmc_read_config_dword(hose, bus, devfn, - HARRIER_LBA_OFF, &val); - if ((result != PCIBIOS_SUCCESSFUL) || - ((val & HARRIER_LBA_MSK) != HARRIER_LBA_MSK)) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* It's us, save our location for later */ - self = devfn; - found_self = 1; - return PCIBIOS_SUCCESSFUL; - } -} - -static int prpmc_exclude_device(u8 bus, u8 devfn) -{ - /* - * Monarch is allowed to access all PCI devices. Non-monarch is - * only allowed to access its own Harrier. - */ - - if (MONARCH) - return PCIBIOS_SUCCESSFUL; - if (found_self) - if ((bus == 0) && (devfn == self)) - return PCIBIOS_SUCCESSFUL; - else - return PCIBIOS_DEVICE_NOT_FOUND; - else - return prpmc_self(bus, devfn); -} - -void __init prpmc800_find_bridges(void) -{ - struct pci_controller *hose; - int host_bridge; - - hose = pcibios_alloc_controller(); - if (!hose) - return; - - hose->first_busno = 0; - hose->last_busno = 0xff; - - ppc_md.pci_exclude_device = prpmc_exclude_device; - ppc_md.pcibios_fixup = NULL; - ppc_md.pcibios_fixup_bus = NULL; - ppc_md.pci_swizzle = common_swizzle; - ppc_md.pci_map_irq = prpmc_map_irq; - - setup_indirect_pci(hose, - PRPMC800_PCI_CONFIG_ADDR, PRPMC800_PCI_CONFIG_DATA); - - /* Get host bridge vendor/dev id */ - - host_bridge = in_be32((uint *) (HARRIER_VENI_REG)); - - if (host_bridge != HARRIER_VEND_DEV_ID) { - printk(KERN_CRIT "Host bridge 0x%x not supported\n", - host_bridge); - return; - } - - monarch = in_be32((uint *) HARRIER_MISC_CSR) & HARRIER_SYSCON; - - printk(KERN_INFO "Running as %s.\n", - MONARCH ? "Monarch" : "Non-Monarch"); - - hose->io_space.start = PRPMC800_PCI_IO_START; - hose->io_space.end = PRPMC800_PCI_IO_END; - hose->io_base_virt = (void *)PRPMC800_ISA_IO_BASE; - hose->pci_mem_offset = PRPMC800_PCI_PHY_MEM_OFFSET; - - pci_init_resource(&hose->io_resource, - PRPMC800_PCI_IO_START, PRPMC800_PCI_IO_END, - IORESOURCE_IO, "PCI host bridge"); - - if (MONARCH) { - hose->mem_space.start = PRPMC800_PCI_MEM_START; - hose->mem_space.end = PRPMC800_PCI_MEM_END; - - pci_init_resource(&hose->mem_resources[0], - PRPMC800_PCI_MEM_START, - PRPMC800_PCI_MEM_END, - IORESOURCE_MEM, "PCI host bridge"); - - if (harrier_init(hose, - PRPMC800_HARRIER_XCSR_BASE, - PRPMC800_PROC_PCI_MEM_START, - PRPMC800_PROC_PCI_MEM_END, - PRPMC800_PROC_PCI_IO_START, - PRPMC800_PROC_PCI_IO_END, - PRPMC800_HARRIER_MPIC_BASE) != 0) - printk(KERN_CRIT "Could not initialize HARRIER " - "bridge\n"); - - harrier_release_eready(PRPMC800_HARRIER_XCSR_BASE); - harrier_wait_eready(PRPMC800_HARRIER_XCSR_BASE); - hose->last_busno = pciauto_bus_scan(hose, hose->first_busno); - - } else { - pci_init_resource(&hose->mem_resources[0], - PRPMC800_NM_PCI_MEM_START, - PRPMC800_NM_PCI_MEM_END, - IORESOURCE_MEM, "PCI host bridge"); - - hose->mem_space.start = PRPMC800_NM_PCI_MEM_START; - hose->mem_space.end = PRPMC800_NM_PCI_MEM_END; - - if (harrier_init(hose, - PRPMC800_HARRIER_XCSR_BASE, - PRPMC800_NM_PROC_PCI_MEM_START, - PRPMC800_NM_PROC_PCI_MEM_END, - PRPMC800_PROC_PCI_IO_START, - PRPMC800_PROC_PCI_IO_END, - PRPMC800_HARRIER_MPIC_BASE) != 0) - printk(KERN_CRIT "Could not initialize HARRIER " - "bridge\n"); - - harrier_setup_nonmonarch(PRPMC800_HARRIER_XCSR_BASE, - HARRIER_ITSZ_1MB); - harrier_release_eready(PRPMC800_HARRIER_XCSR_BASE); - } -} - -static int prpmc800_show_cpuinfo(struct seq_file *m) -{ - seq_printf(m, "machine\t\t: PrPMC800\n"); - - return 0; -} - -static void __init prpmc800_setup_arch(void) -{ - /* init to some ~sane value until calibrate_delay() runs */ - loops_per_jiffy = 50000000 / HZ; - - /* Lookup PCI host bridges */ - prpmc800_find_bridges(); - -#ifdef CONFIG_BLK_DEV_INITRD - if (initrd_start) - ROOT_DEV = Root_RAM0; - else -#endif -#ifdef CONFIG_ROOT_NFS - ROOT_DEV = Root_NFS; -#else - ROOT_DEV = Root_SDA2; -#endif - - printk(KERN_INFO "Port by MontaVista Software, Inc. " - "(source@mvista.com)\n"); -} - -/* - * Compute the PrPMC800's tbl frequency using the baud clock as a reference. - */ -static void __init prpmc800_calibrate_decr(void) -{ - unsigned long tbl_start, tbl_end; - unsigned long current_state, old_state, tb_ticks_per_second; - unsigned int count; - unsigned int harrier_revision; - - harrier_revision = readb(HARRIER_REVI_REG); - if (harrier_revision < 2) { - /* XTAL64 was broken in harrier revision 1 */ - printk(KERN_INFO "time_init: Harrier revision %d, assuming " - "100 Mhz bus\n", harrier_revision); - tb_ticks_per_second = 100000000 / 4; - tb_ticks_per_jiffy = tb_ticks_per_second / HZ; - tb_to_us = mulhwu_scale_factor(tb_ticks_per_second, 1000000); - return; - } - - /* - * The XTAL64 bit oscillates at the 1/64 the base baud clock - * Set count to XTAL64 cycles per second. Since we'll count - * half-cycles, we'll reach the count in half a second. - */ - count = PRPMC800_BASE_BAUD / 64; - - /* Find the first edge of the baud clock */ - old_state = readb(HARRIER_UCTL_REG) & HARRIER_XTAL64_MASK; - do { - current_state = readb(HARRIER_UCTL_REG) & HARRIER_XTAL64_MASK; - } while (old_state == current_state); - - old_state = current_state; - - /* Get the starting time base value */ - tbl_start = get_tbl(); - - /* - * Loop until we have found a number of edges (half-cycles) - * equal to the count (half a second) - */ - do { - do { - current_state = readb(HARRIER_UCTL_REG) & - HARRIER_XTAL64_MASK; - } while (old_state == current_state); - old_state = current_state; - } while (--count); - - /* Get the ending time base value */ - tbl_end = get_tbl(); - - /* We only counted for half a second, so double to get ticks/second */ - tb_ticks_per_second = (tbl_end - tbl_start) * 2; - tb_ticks_per_jiffy = tb_ticks_per_second / HZ; - tb_to_us = mulhwu_scale_factor(tb_ticks_per_second, 1000000); -} - -static void prpmc800_restart(char *cmd) -{ - ulong temp; - - local_irq_disable(); - temp = in_be32((uint *) HARRIER_MISC_CSR_REG); - temp |= HARRIER_RSTOUT; - out_be32((uint *) HARRIER_MISC_CSR_REG, temp); - while (1) ; -} - -static void prpmc800_halt(void) -{ - local_irq_disable(); - while (1) ; -} - -static void prpmc800_power_off(void) -{ - prpmc800_halt(); -} - -static void __init prpmc800_init_IRQ(void) -{ - OpenPIC_InitSenses = prpmc800_openpic_initsenses; - OpenPIC_NumInitSenses = sizeof(prpmc800_openpic_initsenses); - - /* Setup external interrupt sources. */ - openpic_set_sources(0, 16, OpenPIC_Addr + 0x10000); - /* Setup internal UART interrupt source. */ - openpic_set_sources(16, 1, OpenPIC_Addr + 0x10200); - - /* Do the MPIC initialization based on the above settings. */ - openpic_init(0); - - /* enable functional exceptions for uarts and abort */ - out_8((u8 *) HARRIER_FEEN_REG, (HARRIER_FE_UA0 | HARRIER_FE_UA1)); - out_8((u8 *) HARRIER_FEMA_REG, ~(HARRIER_FE_UA0 | HARRIER_FE_UA1)); -} - -/* - * Set BAT 3 to map 0xf0000000 to end of physical memory space. - */ -static __inline__ void prpmc800_set_bat(void) -{ - mb(); - mtspr(SPRN_DBAT1U, 0xf0001ffe); - mtspr(SPRN_DBAT1L, 0xf000002a); - mb(); -} - -/* - * We need to read the Harrier memory controller - * to properly determine this value - */ -static unsigned long __init prpmc800_find_end_of_memory(void) -{ - /* Read the memory size from the Harrier XCSR */ - return harrier_get_mem_size(PRPMC800_HARRIER_XCSR_BASE); -} - -static void __init prpmc800_map_io(void) -{ - io_block_mapping(0x80000000, 0x80000000, 0x10000000, _PAGE_IO); - io_block_mapping(0xf0000000, 0xf0000000, 0x10000000, _PAGE_IO); -} - -void __init -platform_init(unsigned long r3, unsigned long r4, unsigned long r5, - unsigned long r6, unsigned long r7) -{ - parse_bootinfo(find_bootinfo()); - - prpmc800_set_bat(); - - isa_io_base = PRPMC800_ISA_IO_BASE; - isa_mem_base = PRPMC800_ISA_MEM_BASE; - pci_dram_offset = PRPMC800_PCI_DRAM_OFFSET; - - ppc_md.setup_arch = prpmc800_setup_arch; - ppc_md.show_cpuinfo = prpmc800_show_cpuinfo; - ppc_md.init_IRQ = prpmc800_init_IRQ; - ppc_md.get_irq = openpic_get_irq; - - ppc_md.find_end_of_memory = prpmc800_find_end_of_memory; - ppc_md.setup_io_mappings = prpmc800_map_io; - - ppc_md.restart = prpmc800_restart; - ppc_md.power_off = prpmc800_power_off; - ppc_md.halt = prpmc800_halt; - - /* PrPMC800 has no timekeeper part */ - ppc_md.time_init = NULL; - ppc_md.get_rtc_time = NULL; - ppc_md.set_rtc_time = NULL; - ppc_md.calibrate_decr = prpmc800_calibrate_decr; -#ifdef CONFIG_SERIAL_TEXT_DEBUG - ppc_md.progress = gen550_progress; -#else /* !CONFIG_SERIAL_TEXT_DEBUG */ - ppc_md.progress = NULL; -#endif /* CONFIG_SERIAL_TEXT_DEBUG */ -} |