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Diffstat (limited to 'arch/sparc/kernel/prom_irqtrans.c')
| -rw-r--r-- | arch/sparc/kernel/prom_irqtrans.c | 843 |
1 files changed, 843 insertions, 0 deletions
diff --git a/arch/sparc/kernel/prom_irqtrans.c b/arch/sparc/kernel/prom_irqtrans.c new file mode 100644 index 000000000..28aff1c52 --- /dev/null +++ b/arch/sparc/kernel/prom_irqtrans.c @@ -0,0 +1,843 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/init.h> +#include <linux/of.h> +#include <linux/of_platform.h> + +#include <asm/oplib.h> +#include <asm/prom.h> +#include <asm/irq.h> +#include <asm/upa.h> + +#include "prom.h" + +#ifdef CONFIG_PCI +/* PSYCHO interrupt mapping support. */ +#define PSYCHO_IMAP_A_SLOT0 0x0c00UL +#define PSYCHO_IMAP_B_SLOT0 0x0c20UL +static unsigned long psycho_pcislot_imap_offset(unsigned long ino) +{ + unsigned int bus = (ino & 0x10) >> 4; + unsigned int slot = (ino & 0x0c) >> 2; + + if (bus == 0) + return PSYCHO_IMAP_A_SLOT0 + (slot * 8); + else + return PSYCHO_IMAP_B_SLOT0 + (slot * 8); +} + +#define PSYCHO_OBIO_IMAP_BASE 0x1000UL + +#define PSYCHO_ONBOARD_IRQ_BASE 0x20 +#define psycho_onboard_imap_offset(__ino) \ + (PSYCHO_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3)) + +#define PSYCHO_ICLR_A_SLOT0 0x1400UL +#define PSYCHO_ICLR_SCSI 0x1800UL + +#define psycho_iclr_offset(ino) \ + ((ino & 0x20) ? (PSYCHO_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \ + (PSYCHO_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3))) + +static unsigned int psycho_irq_build(struct device_node *dp, + unsigned int ino, + void *_data) +{ + unsigned long controller_regs = (unsigned long) _data; + unsigned long imap, iclr; + unsigned long imap_off, iclr_off; + int inofixup = 0; + + ino &= 0x3f; + if (ino < PSYCHO_ONBOARD_IRQ_BASE) { + /* PCI slot */ + imap_off = psycho_pcislot_imap_offset(ino); + } else { + /* Onboard device */ + imap_off = psycho_onboard_imap_offset(ino); + } + + /* Now build the IRQ bucket. */ + imap = controller_regs + imap_off; + + iclr_off = psycho_iclr_offset(ino); + iclr = controller_regs + iclr_off; + + if ((ino & 0x20) == 0) + inofixup = ino & 0x03; + + return build_irq(inofixup, iclr, imap); +} + +static void __init psycho_irq_trans_init(struct device_node *dp) +{ + const struct linux_prom64_registers *regs; + + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = psycho_irq_build; + + regs = of_get_property(dp, "reg", NULL); + dp->irq_trans->data = (void *) regs[2].phys_addr; +} + +#define sabre_read(__reg) \ +({ u64 __ret; \ + __asm__ __volatile__("ldxa [%1] %2, %0" \ + : "=r" (__ret) \ + : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \ + : "memory"); \ + __ret; \ +}) + +struct sabre_irq_data { + unsigned long controller_regs; + unsigned int pci_first_busno; +}; +#define SABRE_CONFIGSPACE 0x001000000UL +#define SABRE_WRSYNC 0x1c20UL + +#define SABRE_CONFIG_BASE(CONFIG_SPACE) \ + (CONFIG_SPACE | (1UL << 24)) +#define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG) \ + (((unsigned long)(BUS) << 16) | \ + ((unsigned long)(DEVFN) << 8) | \ + ((unsigned long)(REG))) + +/* When a device lives behind a bridge deeper in the PCI bus topology + * than APB, a special sequence must run to make sure all pending DMA + * transfers at the time of IRQ delivery are visible in the coherency + * domain by the cpu. This sequence is to perform a read on the far + * side of the non-APB bridge, then perform a read of Sabre's DMA + * write-sync register. + */ +static void sabre_wsync_handler(unsigned int ino, void *_arg1, void *_arg2) +{ + unsigned int phys_hi = (unsigned int) (unsigned long) _arg1; + struct sabre_irq_data *irq_data = _arg2; + unsigned long controller_regs = irq_data->controller_regs; + unsigned long sync_reg = controller_regs + SABRE_WRSYNC; + unsigned long config_space = controller_regs + SABRE_CONFIGSPACE; + unsigned int bus, devfn; + u16 _unused; + + config_space = SABRE_CONFIG_BASE(config_space); + + bus = (phys_hi >> 16) & 0xff; + devfn = (phys_hi >> 8) & 0xff; + + config_space |= SABRE_CONFIG_ENCODE(bus, devfn, 0x00); + + __asm__ __volatile__("membar #Sync\n\t" + "lduha [%1] %2, %0\n\t" + "membar #Sync" + : "=r" (_unused) + : "r" ((u16 *) config_space), + "i" (ASI_PHYS_BYPASS_EC_E_L) + : "memory"); + + sabre_read(sync_reg); +} + +#define SABRE_IMAP_A_SLOT0 0x0c00UL +#define SABRE_IMAP_B_SLOT0 0x0c20UL +#define SABRE_ICLR_A_SLOT0 0x1400UL +#define SABRE_ICLR_B_SLOT0 0x1480UL +#define SABRE_ICLR_SCSI 0x1800UL +#define SABRE_ICLR_ETH 0x1808UL +#define SABRE_ICLR_BPP 0x1810UL +#define SABRE_ICLR_AU_REC 0x1818UL +#define SABRE_ICLR_AU_PLAY 0x1820UL +#define SABRE_ICLR_PFAIL 0x1828UL +#define SABRE_ICLR_KMS 0x1830UL +#define SABRE_ICLR_FLPY 0x1838UL +#define SABRE_ICLR_SHW 0x1840UL +#define SABRE_ICLR_KBD 0x1848UL +#define SABRE_ICLR_MS 0x1850UL +#define SABRE_ICLR_SER 0x1858UL +#define SABRE_ICLR_UE 0x1870UL +#define SABRE_ICLR_CE 0x1878UL +#define SABRE_ICLR_PCIERR 0x1880UL + +static unsigned long sabre_pcislot_imap_offset(unsigned long ino) +{ + unsigned int bus = (ino & 0x10) >> 4; + unsigned int slot = (ino & 0x0c) >> 2; + + if (bus == 0) + return SABRE_IMAP_A_SLOT0 + (slot * 8); + else + return SABRE_IMAP_B_SLOT0 + (slot * 8); +} + +#define SABRE_OBIO_IMAP_BASE 0x1000UL +#define SABRE_ONBOARD_IRQ_BASE 0x20 +#define sabre_onboard_imap_offset(__ino) \ + (SABRE_OBIO_IMAP_BASE + (((__ino) & 0x1f) << 3)) + +#define sabre_iclr_offset(ino) \ + ((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \ + (SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3))) + +static int sabre_device_needs_wsync(struct device_node *dp) +{ + struct device_node *parent = dp->parent; + const char *parent_model, *parent_compat; + + /* This traversal up towards the root is meant to + * handle two cases: + * + * 1) non-PCI bus sitting under PCI, such as 'ebus' + * 2) the PCI controller interrupts themselves, which + * will use the sabre_irq_build but do not need + * the DMA synchronization handling + */ + while (parent) { + if (of_node_is_type(parent, "pci")) + break; + parent = parent->parent; + } + + if (!parent) + return 0; + + parent_model = of_get_property(parent, + "model", NULL); + if (parent_model && + (!strcmp(parent_model, "SUNW,sabre") || + !strcmp(parent_model, "SUNW,simba"))) + return 0; + + parent_compat = of_get_property(parent, + "compatible", NULL); + if (parent_compat && + (!strcmp(parent_compat, "pci108e,a000") || + !strcmp(parent_compat, "pci108e,a001"))) + return 0; + + return 1; +} + +static unsigned int sabre_irq_build(struct device_node *dp, + unsigned int ino, + void *_data) +{ + struct sabre_irq_data *irq_data = _data; + unsigned long controller_regs = irq_data->controller_regs; + const struct linux_prom_pci_registers *regs; + unsigned long imap, iclr; + unsigned long imap_off, iclr_off; + int inofixup = 0; + int irq; + + ino &= 0x3f; + if (ino < SABRE_ONBOARD_IRQ_BASE) { + /* PCI slot */ + imap_off = sabre_pcislot_imap_offset(ino); + } else { + /* onboard device */ + imap_off = sabre_onboard_imap_offset(ino); + } + + /* Now build the IRQ bucket. */ + imap = controller_regs + imap_off; + + iclr_off = sabre_iclr_offset(ino); + iclr = controller_regs + iclr_off; + + if ((ino & 0x20) == 0) + inofixup = ino & 0x03; + + irq = build_irq(inofixup, iclr, imap); + + /* If the parent device is a PCI<->PCI bridge other than + * APB, we have to install a pre-handler to ensure that + * all pending DMA is drained before the interrupt handler + * is run. + */ + regs = of_get_property(dp, "reg", NULL); + if (regs && sabre_device_needs_wsync(dp)) { + irq_install_pre_handler(irq, + sabre_wsync_handler, + (void *) (long) regs->phys_hi, + (void *) irq_data); + } + + return irq; +} + +static void __init sabre_irq_trans_init(struct device_node *dp) +{ + const struct linux_prom64_registers *regs; + struct sabre_irq_data *irq_data; + const u32 *busrange; + + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = sabre_irq_build; + + irq_data = prom_early_alloc(sizeof(struct sabre_irq_data)); + + regs = of_get_property(dp, "reg", NULL); + irq_data->controller_regs = regs[0].phys_addr; + + busrange = of_get_property(dp, "bus-range", NULL); + irq_data->pci_first_busno = busrange[0]; + + dp->irq_trans->data = irq_data; +} + +/* SCHIZO interrupt mapping support. Unlike Psycho, for this controller the + * imap/iclr registers are per-PBM. + */ +#define SCHIZO_IMAP_BASE 0x1000UL +#define SCHIZO_ICLR_BASE 0x1400UL + +static unsigned long schizo_imap_offset(unsigned long ino) +{ + return SCHIZO_IMAP_BASE + (ino * 8UL); +} + +static unsigned long schizo_iclr_offset(unsigned long ino) +{ + return SCHIZO_ICLR_BASE + (ino * 8UL); +} + +static unsigned long schizo_ino_to_iclr(unsigned long pbm_regs, + unsigned int ino) +{ + + return pbm_regs + schizo_iclr_offset(ino); +} + +static unsigned long schizo_ino_to_imap(unsigned long pbm_regs, + unsigned int ino) +{ + return pbm_regs + schizo_imap_offset(ino); +} + +#define schizo_read(__reg) \ +({ u64 __ret; \ + __asm__ __volatile__("ldxa [%1] %2, %0" \ + : "=r" (__ret) \ + : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \ + : "memory"); \ + __ret; \ +}) +#define schizo_write(__reg, __val) \ + __asm__ __volatile__("stxa %0, [%1] %2" \ + : /* no outputs */ \ + : "r" (__val), "r" (__reg), \ + "i" (ASI_PHYS_BYPASS_EC_E) \ + : "memory") + +static void tomatillo_wsync_handler(unsigned int ino, void *_arg1, void *_arg2) +{ + unsigned long sync_reg = (unsigned long) _arg2; + u64 mask = 1UL << (ino & IMAP_INO); + u64 val; + int limit; + + schizo_write(sync_reg, mask); + + limit = 100000; + val = 0; + while (--limit) { + val = schizo_read(sync_reg); + if (!(val & mask)) + break; + } + if (limit <= 0) { + printk("tomatillo_wsync_handler: DMA won't sync [%llx:%llx]\n", + val, mask); + } + + if (_arg1) { + static unsigned char cacheline[64] + __attribute__ ((aligned (64))); + + __asm__ __volatile__("rd %%fprs, %0\n\t" + "or %0, %4, %1\n\t" + "wr %1, 0x0, %%fprs\n\t" + "stda %%f0, [%5] %6\n\t" + "wr %0, 0x0, %%fprs\n\t" + "membar #Sync" + : "=&r" (mask), "=&r" (val) + : "0" (mask), "1" (val), + "i" (FPRS_FEF), "r" (&cacheline[0]), + "i" (ASI_BLK_COMMIT_P)); + } +} + +struct schizo_irq_data { + unsigned long pbm_regs; + unsigned long sync_reg; + u32 portid; + int chip_version; +}; + +static unsigned int schizo_irq_build(struct device_node *dp, + unsigned int ino, + void *_data) +{ + struct schizo_irq_data *irq_data = _data; + unsigned long pbm_regs = irq_data->pbm_regs; + unsigned long imap, iclr; + int ign_fixup; + int irq; + int is_tomatillo; + + ino &= 0x3f; + + /* Now build the IRQ bucket. */ + imap = schizo_ino_to_imap(pbm_regs, ino); + iclr = schizo_ino_to_iclr(pbm_regs, ino); + + /* On Schizo, no inofixup occurs. This is because each + * INO has it's own IMAP register. On Psycho and Sabre + * there is only one IMAP register for each PCI slot even + * though four different INOs can be generated by each + * PCI slot. + * + * But, for JBUS variants (essentially, Tomatillo), we have + * to fixup the lowest bit of the interrupt group number. + */ + ign_fixup = 0; + + is_tomatillo = (irq_data->sync_reg != 0UL); + + if (is_tomatillo) { + if (irq_data->portid & 1) + ign_fixup = (1 << 6); + } + + irq = build_irq(ign_fixup, iclr, imap); + + if (is_tomatillo) { + irq_install_pre_handler(irq, + tomatillo_wsync_handler, + ((irq_data->chip_version <= 4) ? + (void *) 1 : (void *) 0), + (void *) irq_data->sync_reg); + } + + return irq; +} + +static void __init __schizo_irq_trans_init(struct device_node *dp, + int is_tomatillo) +{ + const struct linux_prom64_registers *regs; + struct schizo_irq_data *irq_data; + + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = schizo_irq_build; + + irq_data = prom_early_alloc(sizeof(struct schizo_irq_data)); + + regs = of_get_property(dp, "reg", NULL); + dp->irq_trans->data = irq_data; + + irq_data->pbm_regs = regs[0].phys_addr; + if (is_tomatillo) + irq_data->sync_reg = regs[3].phys_addr + 0x1a18UL; + else + irq_data->sync_reg = 0UL; + irq_data->portid = of_getintprop_default(dp, "portid", 0); + irq_data->chip_version = of_getintprop_default(dp, "version#", 0); +} + +static void __init schizo_irq_trans_init(struct device_node *dp) +{ + __schizo_irq_trans_init(dp, 0); +} + +static void __init tomatillo_irq_trans_init(struct device_node *dp) +{ + __schizo_irq_trans_init(dp, 1); +} + +static unsigned int pci_sun4v_irq_build(struct device_node *dp, + unsigned int devino, + void *_data) +{ + u32 devhandle = (u32) (unsigned long) _data; + + return sun4v_build_irq(devhandle, devino); +} + +static void __init pci_sun4v_irq_trans_init(struct device_node *dp) +{ + const struct linux_prom64_registers *regs; + + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = pci_sun4v_irq_build; + + regs = of_get_property(dp, "reg", NULL); + dp->irq_trans->data = (void *) (unsigned long) + ((regs->phys_addr >> 32UL) & 0x0fffffff); +} + +struct fire_irq_data { + unsigned long pbm_regs; + u32 portid; +}; + +#define FIRE_IMAP_BASE 0x001000 +#define FIRE_ICLR_BASE 0x001400 + +static unsigned long fire_imap_offset(unsigned long ino) +{ + return FIRE_IMAP_BASE + (ino * 8UL); +} + +static unsigned long fire_iclr_offset(unsigned long ino) +{ + return FIRE_ICLR_BASE + (ino * 8UL); +} + +static unsigned long fire_ino_to_iclr(unsigned long pbm_regs, + unsigned int ino) +{ + return pbm_regs + fire_iclr_offset(ino); +} + +static unsigned long fire_ino_to_imap(unsigned long pbm_regs, + unsigned int ino) +{ + return pbm_regs + fire_imap_offset(ino); +} + +static unsigned int fire_irq_build(struct device_node *dp, + unsigned int ino, + void *_data) +{ + struct fire_irq_data *irq_data = _data; + unsigned long pbm_regs = irq_data->pbm_regs; + unsigned long imap, iclr; + unsigned long int_ctrlr; + + ino &= 0x3f; + + /* Now build the IRQ bucket. */ + imap = fire_ino_to_imap(pbm_regs, ino); + iclr = fire_ino_to_iclr(pbm_regs, ino); + + /* Set the interrupt controller number. */ + int_ctrlr = 1 << 6; + upa_writeq(int_ctrlr, imap); + + /* The interrupt map registers do not have an INO field + * like other chips do. They return zero in the INO + * field, and the interrupt controller number is controlled + * in bits 6 to 9. So in order for build_irq() to get + * the INO right we pass it in as part of the fixup + * which will get added to the map register zero value + * read by build_irq(). + */ + ino |= (irq_data->portid << 6); + ino -= int_ctrlr; + return build_irq(ino, iclr, imap); +} + +static void __init fire_irq_trans_init(struct device_node *dp) +{ + const struct linux_prom64_registers *regs; + struct fire_irq_data *irq_data; + + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = fire_irq_build; + + irq_data = prom_early_alloc(sizeof(struct fire_irq_data)); + + regs = of_get_property(dp, "reg", NULL); + dp->irq_trans->data = irq_data; + + irq_data->pbm_regs = regs[0].phys_addr; + irq_data->portid = of_getintprop_default(dp, "portid", 0); +} +#endif /* CONFIG_PCI */ + +#ifdef CONFIG_SBUS +/* INO number to IMAP register offset for SYSIO external IRQ's. + * This should conform to both Sunfire/Wildfire server and Fusion + * desktop designs. + */ +#define SYSIO_IMAP_SLOT0 0x2c00UL +#define SYSIO_IMAP_SLOT1 0x2c08UL +#define SYSIO_IMAP_SLOT2 0x2c10UL +#define SYSIO_IMAP_SLOT3 0x2c18UL +#define SYSIO_IMAP_SCSI 0x3000UL +#define SYSIO_IMAP_ETH 0x3008UL +#define SYSIO_IMAP_BPP 0x3010UL +#define SYSIO_IMAP_AUDIO 0x3018UL +#define SYSIO_IMAP_PFAIL 0x3020UL +#define SYSIO_IMAP_KMS 0x3028UL +#define SYSIO_IMAP_FLPY 0x3030UL +#define SYSIO_IMAP_SHW 0x3038UL +#define SYSIO_IMAP_KBD 0x3040UL +#define SYSIO_IMAP_MS 0x3048UL +#define SYSIO_IMAP_SER 0x3050UL +#define SYSIO_IMAP_TIM0 0x3060UL +#define SYSIO_IMAP_TIM1 0x3068UL +#define SYSIO_IMAP_UE 0x3070UL +#define SYSIO_IMAP_CE 0x3078UL +#define SYSIO_IMAP_SBERR 0x3080UL +#define SYSIO_IMAP_PMGMT 0x3088UL +#define SYSIO_IMAP_GFX 0x3090UL +#define SYSIO_IMAP_EUPA 0x3098UL + +#define bogon ((unsigned long) -1) +static unsigned long sysio_irq_offsets[] = { + /* SBUS Slot 0 --> 3, level 1 --> 7 */ + SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, + SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, SYSIO_IMAP_SLOT0, + SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, + SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, SYSIO_IMAP_SLOT1, + SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, + SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, SYSIO_IMAP_SLOT2, + SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, + SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, SYSIO_IMAP_SLOT3, + + /* Onboard devices (not relevant/used on SunFire). */ + SYSIO_IMAP_SCSI, + SYSIO_IMAP_ETH, + SYSIO_IMAP_BPP, + bogon, + SYSIO_IMAP_AUDIO, + SYSIO_IMAP_PFAIL, + bogon, + bogon, + SYSIO_IMAP_KMS, + SYSIO_IMAP_FLPY, + SYSIO_IMAP_SHW, + SYSIO_IMAP_KBD, + SYSIO_IMAP_MS, + SYSIO_IMAP_SER, + bogon, + bogon, + SYSIO_IMAP_TIM0, + SYSIO_IMAP_TIM1, + bogon, + bogon, + SYSIO_IMAP_UE, + SYSIO_IMAP_CE, + SYSIO_IMAP_SBERR, + SYSIO_IMAP_PMGMT, + SYSIO_IMAP_GFX, + SYSIO_IMAP_EUPA, +}; + +#undef bogon + +#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets) + +/* Convert Interrupt Mapping register pointer to associated + * Interrupt Clear register pointer, SYSIO specific version. + */ +#define SYSIO_ICLR_UNUSED0 0x3400UL +#define SYSIO_ICLR_SLOT0 0x3408UL +#define SYSIO_ICLR_SLOT1 0x3448UL +#define SYSIO_ICLR_SLOT2 0x3488UL +#define SYSIO_ICLR_SLOT3 0x34c8UL +static unsigned long sysio_imap_to_iclr(unsigned long imap) +{ + unsigned long diff = SYSIO_ICLR_UNUSED0 - SYSIO_IMAP_SLOT0; + return imap + diff; +} + +static unsigned int sbus_of_build_irq(struct device_node *dp, + unsigned int ino, + void *_data) +{ + unsigned long reg_base = (unsigned long) _data; + const struct linux_prom_registers *regs; + unsigned long imap, iclr; + int sbus_slot = 0; + int sbus_level = 0; + + ino &= 0x3f; + + regs = of_get_property(dp, "reg", NULL); + if (regs) + sbus_slot = regs->which_io; + + if (ino < 0x20) + ino += (sbus_slot * 8); + + imap = sysio_irq_offsets[ino]; + if (imap == ((unsigned long)-1)) { + prom_printf("get_irq_translations: Bad SYSIO INO[%x]\n", + ino); + prom_halt(); + } + imap += reg_base; + + /* SYSIO inconsistency. For external SLOTS, we have to select + * the right ICLR register based upon the lower SBUS irq level + * bits. + */ + if (ino >= 0x20) { + iclr = sysio_imap_to_iclr(imap); + } else { + sbus_level = ino & 0x7; + + switch(sbus_slot) { + case 0: + iclr = reg_base + SYSIO_ICLR_SLOT0; + break; + case 1: + iclr = reg_base + SYSIO_ICLR_SLOT1; + break; + case 2: + iclr = reg_base + SYSIO_ICLR_SLOT2; + break; + default: + case 3: + iclr = reg_base + SYSIO_ICLR_SLOT3; + break; + } + + iclr += ((unsigned long)sbus_level - 1UL) * 8UL; + } + return build_irq(sbus_level, iclr, imap); +} + +static void __init sbus_irq_trans_init(struct device_node *dp) +{ + const struct linux_prom64_registers *regs; + + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = sbus_of_build_irq; + + regs = of_get_property(dp, "reg", NULL); + dp->irq_trans->data = (void *) (unsigned long) regs->phys_addr; +} +#endif /* CONFIG_SBUS */ + + +static unsigned int central_build_irq(struct device_node *dp, + unsigned int ino, + void *_data) +{ + struct device_node *central_dp = _data; + struct platform_device *central_op = of_find_device_by_node(central_dp); + struct resource *res; + unsigned long imap, iclr; + u32 tmp; + + if (of_node_name_eq(dp, "eeprom")) { + res = ¢ral_op->resource[5]; + } else if (of_node_name_eq(dp, "zs")) { + res = ¢ral_op->resource[4]; + } else if (of_node_name_eq(dp, "clock-board")) { + res = ¢ral_op->resource[3]; + } else { + return ino; + } + + imap = res->start + 0x00UL; + iclr = res->start + 0x10UL; + + /* Set the INO state to idle, and disable. */ + upa_writel(0, iclr); + upa_readl(iclr); + + tmp = upa_readl(imap); + tmp &= ~0x80000000; + upa_writel(tmp, imap); + + return build_irq(0, iclr, imap); +} + +static void __init central_irq_trans_init(struct device_node *dp) +{ + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = central_build_irq; + + dp->irq_trans->data = dp; +} + +struct irq_trans { + const char *name; + void (*init)(struct device_node *); +}; + +#ifdef CONFIG_PCI +static struct irq_trans __initdata pci_irq_trans_table[] = { + { "SUNW,sabre", sabre_irq_trans_init }, + { "pci108e,a000", sabre_irq_trans_init }, + { "pci108e,a001", sabre_irq_trans_init }, + { "SUNW,psycho", psycho_irq_trans_init }, + { "pci108e,8000", psycho_irq_trans_init }, + { "SUNW,schizo", schizo_irq_trans_init }, + { "pci108e,8001", schizo_irq_trans_init }, + { "SUNW,schizo+", schizo_irq_trans_init }, + { "pci108e,8002", schizo_irq_trans_init }, + { "SUNW,tomatillo", tomatillo_irq_trans_init }, + { "pci108e,a801", tomatillo_irq_trans_init }, + { "SUNW,sun4v-pci", pci_sun4v_irq_trans_init }, + { "pciex108e,80f0", fire_irq_trans_init }, +}; +#endif + +static unsigned int sun4v_vdev_irq_build(struct device_node *dp, + unsigned int devino, + void *_data) +{ + u32 devhandle = (u32) (unsigned long) _data; + + return sun4v_build_irq(devhandle, devino); +} + +static void __init sun4v_vdev_irq_trans_init(struct device_node *dp) +{ + const struct linux_prom64_registers *regs; + + dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller)); + dp->irq_trans->irq_build = sun4v_vdev_irq_build; + + regs = of_get_property(dp, "reg", NULL); + dp->irq_trans->data = (void *) (unsigned long) + ((regs->phys_addr >> 32UL) & 0x0fffffff); +} + +void __init irq_trans_init(struct device_node *dp) +{ +#ifdef CONFIG_PCI + const char *model; + int i; +#endif + +#ifdef CONFIG_PCI + model = of_get_property(dp, "model", NULL); + if (!model) + model = of_get_property(dp, "compatible", NULL); + if (model) { + for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) { + struct irq_trans *t = &pci_irq_trans_table[i]; + + if (!strcmp(model, t->name)) { + t->init(dp); + return; + } + } + } +#endif +#ifdef CONFIG_SBUS + if (of_node_name_eq(dp, "sbus") || + of_node_name_eq(dp, "sbi")) { + sbus_irq_trans_init(dp); + return; + } +#endif + if (of_node_name_eq(dp, "fhc") && + of_node_name_eq(dp->parent, "central")) { + central_irq_trans_init(dp); + return; + } + if (of_node_name_eq(dp, "virtual-devices") || + of_node_name_eq(dp, "niu")) { + sun4v_vdev_irq_trans_init(dp); + return; + } +} |