diff options
| -rw-r--r-- | arch/powerpc/boot/dts/mpc7448hpc2.dts | 44 | ||||
| -rw-r--r-- | arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c | 88 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/tsi108_pci.c | 48 |
3 files changed, 93 insertions, 87 deletions
diff --git a/arch/powerpc/boot/dts/mpc7448hpc2.dts b/arch/powerpc/boot/dts/mpc7448hpc2.dts index d7b985e6bd2f..c4d9562cbaad 100644 --- a/arch/powerpc/boot/dts/mpc7448hpc2.dts +++ b/arch/powerpc/boot/dts/mpc7448hpc2.dts @@ -161,29 +161,41 @@ interrupt-map = < /* IDSEL 0x11 */ - 0800 0 0 1 7400 24 0 - 0800 0 0 2 7400 25 0 - 0800 0 0 3 7400 26 0 - 0800 0 0 4 7400 27 0 + 0800 0 0 1 1180 24 0 + 0800 0 0 2 1180 25 0 + 0800 0 0 3 1180 26 0 + 0800 0 0 4 1180 27 0 /* IDSEL 0x12 */ - 1000 0 0 1 7400 25 0 - 1000 0 0 2 7400 26 0 - 1000 0 0 3 7400 27 0 - 1000 0 0 4 7400 24 0 + 1000 0 0 1 1180 25 0 + 1000 0 0 2 1180 26 0 + 1000 0 0 3 1180 27 0 + 1000 0 0 4 1180 24 0 /* IDSEL 0x13 */ - 1800 0 0 1 7400 26 0 - 1800 0 0 2 7400 27 0 - 1800 0 0 3 7400 24 0 - 1800 0 0 4 7400 25 0 + 1800 0 0 1 1180 26 0 + 1800 0 0 2 1180 27 0 + 1800 0 0 3 1180 24 0 + 1800 0 0 4 1180 25 0 /* IDSEL 0x14 */ - 2000 0 0 1 7400 27 0 - 2000 0 0 2 7400 24 0 - 2000 0 0 3 7400 25 0 - 2000 0 0 4 7400 26 0 + 2000 0 0 1 1180 27 0 + 2000 0 0 2 1180 24 0 + 2000 0 0 3 1180 25 0 + 2000 0 0 4 1180 26 0 >; + router@1180 { + linux,phandle = <1180>; + clock-frequency = <0>; + interrupt-controller; + device_type = "pic-router"; + #address-cells = <0>; + #interrupt-cells = <2>; + built-in; + big-endian; + interrupts = <17 2>; + interrupt-parent = <7400>; + }; }; }; diff --git a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c index c6113c39009e..3fcc85f60fbf 100644 --- a/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c +++ b/arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c @@ -60,7 +60,7 @@ pci_dram_offset = MPC7448_HPC2_PCI_MEM_OFFSET; extern int tsi108_setup_pci(struct device_node *dev); extern void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val); -extern void tsi108_pci_int_init(void); +extern void tsi108_pci_int_init(struct device_node *node); extern void tsi108_irq_cascade(unsigned int irq, struct irq_desc *desc); int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn) @@ -71,59 +71,6 @@ int mpc7448_hpc2_exclude_device(u_char bus, u_char devfn) return PCIBIOS_SUCCESSFUL; } -/* - * find pci slot by devfn in interrupt map of OF tree - */ -u8 find_slot_by_devfn(unsigned int *interrupt_map, unsigned int devfn) -{ - int i; - unsigned int tmp; - for (i = 0; i < 4; i++){ - tmp = interrupt_map[i*4*7]; - if ((tmp >> 11) == (devfn >> 3)) - return i; - } - return i; -} - -/* - * Scans the interrupt map for pci device - */ -void __devinit mpc7448_hpc2_fixup_irq(struct pci_dev *dev) -{ - struct pci_controller *hose; - struct device_node *node; - const unsigned int *interrupt; - int busnr; - int len; - u8 slot; - u8 pin; - - /* Lookup the hose */ - busnr = dev->bus->number; - hose = pci_bus_to_hose(busnr); - if (!hose) - printk(KERN_ERR "No pci hose found\n"); - - /* Check it has an OF node associated */ - node = (struct device_node *) hose->arch_data; - if (!node) - printk(KERN_ERR "No pci node found\n"); - - interrupt = get_property(node, "interrupt-map", &len); - slot = find_slot_by_devfn(interrupt, dev->devfn); - pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); - if (pin == 0 || pin > 4) - pin = 1; - pin--; - dev->irq = interrupt[slot*4*7 + pin*7 + 5]; - - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); - - DBG("TSI_PCI: dev->irq = 0x%x\n", dev->irq); -} -/* temporary pci irq map fixup*/ - static void __init mpc7448_hpc2_setup_arch(void) { struct device_node *cpu; @@ -186,9 +133,12 @@ static void __init mpc7448_hpc2_init_IRQ(void) { struct mpic *mpic; phys_addr_t mpic_paddr = 0; + struct device_node *tsi_pic; +#ifdef CONFIG_PCI unsigned int cascade_pci_irq; struct device_node *tsi_pci; - struct device_node *tsi_pic; + struct device_node *cascade_node = NULL; +#endif tsi_pic = of_find_node_by_type(NULL, "open-pic"); if (tsi_pic) { @@ -202,31 +152,41 @@ static void __init mpc7448_hpc2_init_IRQ(void) return; } - DBG("%s: tsi108pic phys_addr = 0x%x\n", __FUNCTION__, + DBG("%s: tsi108 pic phys_addr = 0x%x\n", __FUNCTION__, (u32) mpic_paddr); mpic = mpic_alloc(tsi_pic, mpic_paddr, MPIC_PRIMARY | MPIC_BIG_ENDIAN | MPIC_WANTS_RESET | MPIC_SPV_EOI | MPIC_NO_PTHROU_DIS | MPIC_REGSET_TSI108, - 0, /* num_sources used */ - 0, /* num_sources used */ + 24, + NR_IRQS-4, /* num_sources used */ "Tsi108_PIC"); - BUG_ON(mpic == NULL); /* XXXX */ + BUG_ON(mpic == NULL); + + mpic_assign_isu(mpic, 0, mpic_paddr + 0x100); + mpic_init(mpic); +#ifdef CONFIG_PCI tsi_pci = of_find_node_by_type(NULL, "pci"); - if (tsi_pci == 0) { + if (tsi_pci == NULL) { printk("%s: No tsi108 pci node found !\n", __FUNCTION__); return; } + cascade_node = of_find_node_by_type(NULL, "pic-router"); + if (cascade_node == NULL) { + printk("%s: No tsi108 pci cascade node found !\n", __FUNCTION__); + return; + } cascade_pci_irq = irq_of_parse_and_map(tsi_pci, 0); + DBG("%s: tsi108 cascade_pci_irq = 0x%x\n", __FUNCTION__, + (u32) cascade_pci_irq); + tsi108_pci_int_init(cascade_node); set_irq_data(cascade_pci_irq, mpic); set_irq_chained_handler(cascade_pci_irq, tsi108_irq_cascade); - - tsi108_pci_int_init(); - +#endif /* Configure MPIC outputs to CPU0 */ tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0); of_node_put(tsi_pic); @@ -284,7 +244,6 @@ static int mpc7448_machine_check_exception(struct pt_regs *regs) return 1; } return 0; - } define_machine(mpc7448_hpc2){ @@ -294,7 +253,6 @@ define_machine(mpc7448_hpc2){ .init_IRQ = mpc7448_hpc2_init_IRQ, .show_cpuinfo = mpc7448_hpc2_show_cpuinfo, .get_irq = mpic_get_irq, - .pci_irq_fixup = mpc7448_hpc2_fixup_irq, .restart = mpc7448_hpc2_restart, .calibrate_decr = generic_calibrate_decr, .machine_check_exception= mpc7448_machine_check_exception, diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c index 322f86e93de5..ae249c6bbbcf 100644 --- a/arch/powerpc/sysdev/tsi108_pci.c +++ b/arch/powerpc/sysdev/tsi108_pci.c @@ -3,6 +3,8 @@ * * 2004-2005 (c) Tundra Semiconductor Corp. * Author: Alex Bounine (alexandreb@tundra.com) + * Author: Roy Zang (tie-fei.zang@freescale.com) + * Add pci interrupt router host * * 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 @@ -48,6 +50,8 @@ u32 tsi108_pci_cfg_base; u32 tsi108_csr_vir_base; +static struct device_node *pci_irq_node; +static struct irq_host *pci_irq_host; extern u32 get_vir_csrbase(void); extern u32 tsi108_read_reg(u32 reg_offset); @@ -378,6 +382,38 @@ static struct irq_chip tsi108_pci_irq = { .unmask = tsi108_pci_irq_enable, }; +static int pci_irq_host_xlate(struct irq_host *h, struct device_node *ct, + u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, unsigned int *out_flags) +{ + *out_hwirq = intspec[0]; + *out_flags = IRQ_TYPE_LEVEL_HIGH; + return 0; +} + +static int pci_irq_host_map(struct irq_host *h, unsigned int virq, + irq_hw_number_t hw) +{ unsigned int irq; + DBG("%s(%d, 0x%lx)\n", __FUNCTION__, virq, hw); + if ((virq >= 1) && (virq <= 4)){ + irq = virq + IRQ_PCI_INTAD_BASE - 1; + get_irq_desc(irq)->status |= IRQ_LEVEL; + set_irq_chip(irq, &tsi108_pci_irq); + } + return 0; +} + +static int pci_irq_host_match(struct irq_host *h, struct device_node *node) +{ + return pci_irq_node == node; +} + +static struct irq_host_ops pci_irq_host_ops = { + .match = pci_irq_host_match, + .map = pci_irq_host_map, + .xlate = pci_irq_host_xlate, +}; + /* * Exported functions */ @@ -391,15 +427,15 @@ static struct irq_chip tsi108_pci_irq = { * to the MPIC. */ -void __init tsi108_pci_int_init(void) +void __init tsi108_pci_int_init(struct device_node *node) { - u_int i; - DBG("Tsi108_pci_int_init: initializing PCI interrupts\n"); - for (i = 0; i < NUM_PCI_IRQS; i++) { - irq_desc[i + IRQ_PCI_INTAD_BASE].chip = &tsi108_pci_irq; - irq_desc[i + IRQ_PCI_INTAD_BASE].status |= IRQ_LEVEL; + pci_irq_node = of_node_get(node); + pci_irq_host = irq_alloc_host(IRQ_HOST_MAP_LEGACY, 0, &pci_irq_host_ops, 0); + if (pci_irq_host == NULL) { + printk(KERN_ERR "pci_irq_host: failed to allocate irq host !\n"); + return; } init_pci_source(); |