diff options
Diffstat (limited to 'arch/powerpc/platforms/powermac')
| -rw-r--r-- | arch/powerpc/platforms/powermac/feature.c | 65 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/pci.c | 210 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/pic.c | 72 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/setup.c | 13 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powermac/smp.c | 319 |
5 files changed, 447 insertions, 232 deletions
diff --git a/arch/powerpc/platforms/powermac/feature.c b/arch/powerpc/platforms/powermac/feature.c index b1f896952b1..d2915d64d45 100644 --- a/arch/powerpc/platforms/powermac/feature.c +++ b/arch/powerpc/platforms/powermac/feature.c @@ -101,7 +101,8 @@ static const char *macio_names[] = "Keylargo", "Pangea", "Intrepid", - "K2" + "K2", + "Shasta", }; @@ -119,7 +120,7 @@ static const char *macio_names[] = static struct device_node *uninorth_node; static u32 __iomem *uninorth_base; static u32 uninorth_rev; -static int uninorth_u3; +static int uninorth_maj; static void __iomem *u3_ht; /* @@ -1399,8 +1400,15 @@ static long g5_fw_enable(struct device_node *node, long param, long value) static long g5_mpic_enable(struct device_node *node, long param, long value) { unsigned long flags; + struct device_node *parent = of_get_parent(node); + int is_u3; - if (node->parent == NULL || strcmp(node->parent->name, "u3")) + if (parent == NULL) + return 0; + is_u3 = strcmp(parent->name, "u3") == 0 || + strcmp(parent->name, "u4") == 0; + of_node_put(parent); + if (!is_u3) return 0; LOCK(flags); @@ -1464,7 +1472,7 @@ static long g5_i2s_enable(struct device_node *node, long param, long value) }, }; - if (macio->type != macio_keylargo2 /* && macio->type != macio_shasta*/) + if (macio->type != macio_keylargo2 && macio->type != macio_shasta) return -ENODEV; if (strncmp(node->name, "i2s-", 4)) return -ENODEV; @@ -1473,11 +1481,9 @@ static long g5_i2s_enable(struct device_node *node, long param, long value) case 0: case 1: break; -#if 0 case 2: if (macio->type == macio_shasta) break; -#endif default: return -ENODEV; } @@ -1508,7 +1514,7 @@ static long g5_reset_cpu(struct device_node *node, long param, long value) struct device_node *np; macio = &macio_chips[0]; - if (macio->type != macio_keylargo2) + if (macio->type != macio_keylargo2 && macio->type != macio_shasta) return -ENODEV; np = find_path_device("/cpus"); @@ -1547,7 +1553,8 @@ static long g5_reset_cpu(struct device_node *node, long param, long value) */ void g5_phy_disable_cpu1(void) { - UN_OUT(U3_API_PHY_CONFIG_1, 0); + if (uninorth_maj == 3) + UN_OUT(U3_API_PHY_CONFIG_1, 0); } #endif /* CONFIG_POWER4 */ @@ -2462,6 +2469,14 @@ static struct pmac_mb_def pmac_mb_defs[] = { PMAC_TYPE_POWERMAC_G5_U3L, g5_features, 0, }, + { "PowerMac11,2", "PowerMac G5 Dual Core", + PMAC_TYPE_POWERMAC_G5_U3L, g5_features, + 0, + }, + { "PowerMac12,1", "iMac G5 (iSight)", + PMAC_TYPE_POWERMAC_G5_U3L, g5_features, + 0, + }, { "RackMac3,1", "XServe G5", PMAC_TYPE_XSERVE_G5, g5_features, 0, @@ -2574,6 +2589,11 @@ static int __init probe_motherboard(void) pmac_mb.model_name = "Unknown K2-based"; pmac_mb.features = g5_features; break; + case macio_shasta: + pmac_mb.model_id = PMAC_TYPE_UNKNOWN_SHASTA; + pmac_mb.model_name = "Unknown Shasta-based"; + pmac_mb.features = g5_features; + break; #endif /* CONFIG_POWER4 */ default: return -ENODEV; @@ -2651,7 +2671,12 @@ static void __init probe_uninorth(void) /* Locate G5 u3 */ if (uninorth_node == NULL) { uninorth_node = of_find_node_by_name(NULL, "u3"); - uninorth_u3 = 1; + uninorth_maj = 3; + } + /* Locate G5 u4 */ + if (uninorth_node == NULL) { + uninorth_node = of_find_node_by_name(NULL, "u4"); + uninorth_maj = 4; } if (uninorth_node == NULL) return; @@ -2664,12 +2689,13 @@ static void __init probe_uninorth(void) return; uninorth_base = ioremap(address, 0x40000); uninorth_rev = in_be32(UN_REG(UNI_N_VERSION)); - if (uninorth_u3) + if (uninorth_maj == 3 || uninorth_maj == 4) u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000); - printk(KERN_INFO "Found %s memory controller & host bridge," - " revision: %d\n", uninorth_u3 ? "U3" : "UniNorth", - uninorth_rev); + printk(KERN_INFO "Found %s memory controller & host bridge" + " @ 0x%08x revision: 0x%02x\n", uninorth_maj == 3 ? "U3" : + uninorth_maj == 4 ? "U4" : "UniNorth", + (unsigned int)address, uninorth_rev); printk(KERN_INFO "Mapped at 0x%08lx\n", (unsigned long)uninorth_base); /* Set the arbitrer QAck delay according to what Apple does @@ -2677,7 +2703,8 @@ static void __init probe_uninorth(void) if (uninorth_rev < 0x11) { actrl = UN_IN(UNI_N_ARB_CTRL) & ~UNI_N_ARB_CTRL_QACK_DELAY_MASK; actrl |= ((uninorth_rev < 3) ? UNI_N_ARB_CTRL_QACK_DELAY105 : - UNI_N_ARB_CTRL_QACK_DELAY) << UNI_N_ARB_CTRL_QACK_DELAY_SHIFT; + UNI_N_ARB_CTRL_QACK_DELAY) << + UNI_N_ARB_CTRL_QACK_DELAY_SHIFT; UN_OUT(UNI_N_ARB_CTRL, actrl); } @@ -2685,7 +2712,8 @@ static void __init probe_uninorth(void) * revs 1.5 to 2.O and Pangea. Seem to toggle the UniN Maxbus/PCI * memory timeout */ - if ((uninorth_rev >= 0x11 && uninorth_rev <= 0x24) || uninorth_rev == 0xc0) + if ((uninorth_rev >= 0x11 && uninorth_rev <= 0x24) || + uninorth_rev == 0xc0) UN_OUT(0x2160, UN_IN(0x2160) & 0x00ffffff); } @@ -2736,12 +2764,14 @@ static void __init probe_one_macio(const char *name, const char *compat, int typ node->full_name); return; } - if (type == macio_keylargo) { + if (type == macio_keylargo || type == macio_keylargo2) { u32 *did = (u32 *)get_property(node, "device-id", NULL); if (*did == 0x00000025) type = macio_pangea; if (*did == 0x0000003e) type = macio_intrepid; + if (*did == 0x0000004f) + type = macio_shasta; } macio_chips[i].of_node = node; macio_chips[i].type = type; @@ -2840,7 +2870,8 @@ set_initial_features(void) } #ifdef CONFIG_POWER4 - if (macio_chips[0].type == macio_keylargo2) { + if (macio_chips[0].type == macio_keylargo2 || + macio_chips[0].type == macio_shasta) { #ifndef CONFIG_SMP /* On SMP machines running UP, we have the second CPU eating * bus cycles. We need to take it off the bus. This is done diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c index 5aab261075d..f671ed25390 100644 --- a/arch/powerpc/platforms/powermac/pci.c +++ b/arch/powerpc/platforms/powermac/pci.c @@ -1,7 +1,7 @@ /* * Support for PCI bridges found on Power Macintoshes. * - * Copyright (C) 2003 Benjamin Herrenschmuidt (benh@kernel.crashing.org) + * Copyright (C) 2003-2005 Benjamin Herrenschmuidt (benh@kernel.crashing.org) * Copyright (C) 1997 Paul Mackerras (paulus@samba.org) * * This program is free software; you can redistribute it and/or @@ -25,7 +25,7 @@ #include <asm/pmac_feature.h> #include <asm/grackle.h> #ifdef CONFIG_PPC64 -#include <asm/iommu.h> +//#include <asm/iommu.h> #include <asm/ppc-pci.h> #endif @@ -44,6 +44,7 @@ static int add_bridge(struct device_node *dev); static int has_uninorth; #ifdef CONFIG_PPC64 static struct pci_controller *u3_agp; +static struct pci_controller *u4_pcie; static struct pci_controller *u3_ht; #endif /* CONFIG_PPC64 */ @@ -97,11 +98,8 @@ static void __init fixup_bus_range(struct device_node *bridge) /* Lookup the "bus-range" property for the hose */ bus_range = (int *) get_property(bridge, "bus-range", &len); - if (bus_range == NULL || len < 2 * sizeof(int)) { - printk(KERN_WARNING "Can't get bus-range for %s\n", - bridge->full_name); + if (bus_range == NULL || len < 2 * sizeof(int)) return; - } bus_range[1] = fixup_one_level_bus_range(bridge->child, bus_range[1]); } @@ -128,14 +126,14 @@ static void __init fixup_bus_range(struct device_node *bridge) */ #define MACRISC_CFA0(devfn, off) \ - ((1 << (unsigned long)PCI_SLOT(dev_fn)) \ - | (((unsigned long)PCI_FUNC(dev_fn)) << 8) \ - | (((unsigned long)(off)) & 0xFCUL)) + ((1 << (unsigned int)PCI_SLOT(dev_fn)) \ + | (((unsigned int)PCI_FUNC(dev_fn)) << 8) \ + | (((unsigned int)(off)) & 0xFCUL)) #define MACRISC_CFA1(bus, devfn, off) \ - ((((unsigned long)(bus)) << 16) \ - |(((unsigned long)(devfn)) << 8) \ - |(((unsigned long)(off)) & 0xFCUL) \ + ((((unsigned int)(bus)) << 16) \ + |(((unsigned int)(devfn)) << 8) \ + |(((unsigned int)(off)) & 0xFCUL) \ |1UL) static unsigned long macrisc_cfg_access(struct pci_controller* hose, @@ -168,7 +166,8 @@ static int macrisc_read_config(struct pci_bus *bus, unsigned int devfn, hose = pci_bus_to_host(bus); if (hose == NULL) return PCIBIOS_DEVICE_NOT_FOUND; - + if (offset >= 0x100) + return PCIBIOS_BAD_REGISTER_NUMBER; addr = macrisc_cfg_access(hose, bus->number, devfn, offset); if (!addr) return PCIBIOS_DEVICE_NOT_FOUND; @@ -199,7 +198,8 @@ static int macrisc_write_config(struct pci_bus *bus, unsigned int devfn, hose = pci_bus_to_host(bus); if (hose == NULL) return PCIBIOS_DEVICE_NOT_FOUND; - + if (offset >= 0x100) + return PCIBIOS_BAD_REGISTER_NUMBER; addr = macrisc_cfg_access(hose, bus->number, devfn, offset); if (!addr) return PCIBIOS_DEVICE_NOT_FOUND; @@ -234,12 +234,13 @@ static struct pci_ops macrisc_pci_ops = /* * Verify that a specific (bus, dev_fn) exists on chaos */ -static int -chaos_validate_dev(struct pci_bus *bus, int devfn, int offset) +static int chaos_validate_dev(struct pci_bus *bus, int devfn, int offset) { struct device_node *np; u32 *vendor, *device; + if (offset >= 0x100) + return PCIBIOS_BAD_REGISTER_NUMBER; np = pci_busdev_to_OF_node(bus, devfn); if (np == NULL) return PCIBIOS_DEVICE_NOT_FOUND; @@ -341,10 +342,10 @@ static int u3_ht_skip_device(struct pci_controller *hose, } #define U3_HT_CFA0(devfn, off) \ - ((((unsigned long)devfn) << 8) | offset) + ((((unsigned int)devfn) << 8) | offset) #define U3_HT_CFA1(bus, devfn, off) \ (U3_HT_CFA0(devfn, off) \ - + (((unsigned long)bus) << 16) \ + + (((unsigned int)bus) << 16) \ + 0x01000000UL) static unsigned long u3_ht_cfg_access(struct pci_controller* hose, @@ -370,7 +371,8 @@ static int u3_ht_read_config(struct pci_bus *bus, unsigned int devfn, hose = pci_bus_to_host(bus); if (hose == NULL) return PCIBIOS_DEVICE_NOT_FOUND; - + if (offset >= 0x100) + return PCIBIOS_BAD_REGISTER_NUMBER; addr = u3_ht_cfg_access(hose, bus->number, devfn, offset); if (!addr) return PCIBIOS_DEVICE_NOT_FOUND; @@ -419,7 +421,8 @@ static int u3_ht_write_config(struct pci_bus *bus, unsigned int devfn, hose = pci_bus_to_host(bus); if (hose == NULL) return PCIBIOS_DEVICE_NOT_FOUND; - + if (offset >= 0x100) + return PCIBIOS_BAD_REGISTER_NUMBER; addr = u3_ht_cfg_access(hose, bus->number, devfn, offset); if (!addr) return PCIBIOS_DEVICE_NOT_FOUND; @@ -459,6 +462,112 @@ static struct pci_ops u3_ht_pci_ops = u3_ht_read_config, u3_ht_write_config }; + +#define U4_PCIE_CFA0(devfn, off) \ + ((1 << ((unsigned int)PCI_SLOT(dev_fn))) \ + | (((unsigned int)PCI_FUNC(dev_fn)) << 8) \ + | ((((unsigned int)(off)) >> 8) << 28) \ + | (((unsigned int)(off)) & 0xfcU)) + +#define U4_PCIE_CFA1(bus, devfn, off) \ + ((((unsigned int)(bus)) << 16) \ + |(((unsigned int)(devfn)) << 8) \ + | ((((unsigned int)(off)) >> 8) << 28) \ + |(((unsigned int)(off)) & 0xfcU) \ + |1UL) + +static unsigned long u4_pcie_cfg_access(struct pci_controller* hose, + u8 bus, u8 dev_fn, int offset) +{ + unsigned int caddr; + + if (bus == hose->first_busno) { + caddr = U4_PCIE_CFA0(dev_fn, offset); + } else + caddr = U4_PCIE_CFA1(bus, dev_fn, offset); + + /* Uninorth will return garbage if we don't read back the value ! */ + do { + out_le32(hose->cfg_addr, caddr); + } while (in_le32(hose->cfg_addr) != caddr); + + offset &= 0x03; + return ((unsigned long)hose->cfg_data) + offset; +} + +static int u4_pcie_read_config(struct pci_bus *bus, unsigned int devfn, + int offset, int len, u32 *val) +{ + struct pci_controller *hose; + unsigned long addr; + + hose = pci_bus_to_host(bus); + if (hose == NULL) + return PCIBIOS_DEVICE_NOT_FOUND; + if (offset >= 0x1000) + return PCIBIOS_BAD_REGISTER_NUMBER; + addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset); + if (!addr) + return PCIBIOS_DEVICE_NOT_FOUND; + /* + * Note: the caller has already checked that offset is + * suitably aligned and that len is 1, 2 or 4. + */ + switch (len) { + case 1: + *val = in_8((u8 *)addr); + break; + case 2: + *val = in_le16((u16 *)addr); + break; + default: + *val = in_le32((u32 *)addr); + break; + } + return PCIBIOS_SUCCESSFUL; +} + +static int u4_pcie_write_config(struct pci_bus *bus, unsigned int devfn, + int offset, int len, u32 val) +{ + struct pci_controller *hose; + unsigned long addr; + + hose = pci_bus_to_host(bus); + if (hose == NULL) + return PCIBIOS_DEVICE_NOT_FOUND; + if (offset >= 0x1000) + return PCIBIOS_BAD_REGISTER_NUMBER; + addr = u4_pcie_cfg_access(hose, bus->number, devfn, offset); + if (!addr) + return PCIBIOS_DEVICE_NOT_FOUND; + /* + * Note: the caller has already checked that offset is + * suitably aligned and that len is 1, 2 or 4. + */ + switch (len) { + case 1: + out_8((u8 *)addr, val); + (void) in_8((u8 *)addr); + break; + case 2: + out_le16((u16 *)addr, val); + (void) in_le16((u16 *)addr); + break; + default: + out_le32((u32 *)addr, val); + (void) in_le32((u32 *)addr); + break; + } + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops u4_pcie_pci_ops = +{ + u4_pcie_read_config, + u4_pcie_write_config +}; + #endif /* CONFIG_PPC64 */ #ifdef CONFIG_PPC32 @@ -628,15 +737,36 @@ static void __init setup_u3_agp(struct pci_controller* hose) hose->ops = ¯isc_pci_ops; hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000); hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000); - u3_agp = hose; } +static void __init setup_u4_pcie(struct pci_controller* hose) +{ + /* We currently only implement the "non-atomic" config space, to + * be optimised later. + */ + hose->ops = &u4_pcie_pci_ops; + hose->cfg_addr = ioremap(0xf0000000 + 0x800000, 0x1000); + hose->cfg_data = ioremap(0xf0000000 + 0xc00000, 0x1000); + + /* The bus contains a bridge from root -> device, we need to + * make it visible on bus 0 so that we pick the right type + * of config cycles. If we didn't, we would have to force all + * config cycles to be type 1. So we override the "bus-range" + * property here + */ + hose->first_busno = 0x00; + hose->last_busno = 0xff; + u4_pcie = hose; +} + static void __init setup_u3_ht(struct pci_controller* hose) { struct device_node *np = (struct device_node *)hose->arch_data; + struct pci_controller *other = NULL; int i, cur; + hose->ops = &u3_ht_pci_ops; /* We hard code the address because of the different size of @@ -670,11 +800,20 @@ static void __init setup_u3_ht(struct pci_controller* hose) u3_ht = hose; - if (u3_agp == NULL) { - DBG("U3 has no AGP, using full resource range\n"); + if (u3_agp != NULL) + other = u3_agp; + else if (u4_pcie != NULL) + other = u4_pcie; + + if (other == NULL) { + DBG("U3/4 has no AGP/PCIE, using full resource range\n"); return; } + /* Fixup bus range vs. PCIE */ + if (u4_pcie) + hose->last_busno = u4_pcie->first_busno - 1; + /* We "remove" the AGP resources from the resources allocated to HT, * that is we create "holes". However, that code does assumptions * that so far happen to be true (cross fingers...), typically that @@ -682,7 +821,7 @@ static void __init setup_u3_ht(struct pci_controller* hose) */ cur = 0; for (i=0; i<3; i++) { - struct resource *res = &u3_agp->mem_resources[i]; + struct resource *res = &other->mem_resources[i]; if (res->flags != IORESOURCE_MEM) continue; /* We don't care about "fine" resources */ @@ -777,9 +916,13 @@ static int __init add_bridge(struct device_node *dev) setup_u3_ht(hose); disp_name = "U3-HT"; primary = 1; + } else if (device_is_compatible(dev, "u4-pcie")) { + setup_u4_pcie(hose); + disp_name = "U4-PCIE"; + primary = 0; } - printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number: %d->%d\n", - disp_name, hose->first_busno, hose->last_busno); + printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number:" + " %d->%d\n", disp_name, hose->first_busno, hose->last_busno); #endif /* CONFIG_PPC64 */ /* 32 bits only bridges */ @@ -900,6 +1043,8 @@ void __init pmac_pci_init(void) pci_setup_phb_io(u3_ht, 1); if (u3_agp) pci_setup_phb_io(u3_agp, 0); + if (u4_pcie) + pci_setup_phb_io(u4_pcie, 0); /* * On ppc64, fixup the IO resources on our host bridges as @@ -912,7 +1057,8 @@ void __init pmac_pci_init(void) /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We * assume there is no P2P bridge on the AGP bus, which should be a - * safe assumptions hopefully. + * safe assumptions for now. We should do something better in the + * future though */ if (u3_agp) { struct device_node *np = u3_agp->arch_data; @@ -920,7 +1066,6 @@ void __init pmac_pci_init(void) for (np = np->child; np; np = np->sibling) PCI_DN(np)->busno = 0xf0; } - /* pmac_check_ht_link(); */ /* Tell pci.c to not use the common resource allocation mechanism */ @@ -1127,7 +1272,8 @@ void pmac_pci_fixup_pciata(struct pci_dev* dev) good: pci_read_config_byte(dev, PCI_CLASS_PROG, &progif); if ((progif & 5) != 5) { - printk(KERN_INFO "Forcing PCI IDE into native mode: %s\n", pci_name(dev)); + printk(KERN_INFO "Forcing PCI IDE into native mode: %s\n", + pci_name(dev)); (void) pci_write_config_byte(dev, PCI_CLASS_PROG, progif|5); if (pci_read_config_byte(dev, PCI_CLASS_PROG, &progif) || (progif & 5) != 5) @@ -1153,7 +1299,8 @@ static void fixup_k2_sata(struct pci_dev* dev) for (i = 0; i < 6; i++) { dev->resource[i].start = dev->resource[i].end = 0; dev->resource[i].flags = 0; - pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, 0); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, + 0); } } else { pci_read_config_word(dev, PCI_COMMAND, &cmd); @@ -1162,7 +1309,8 @@ static void fixup_k2_sata(struct pci_dev* dev) for (i = 0; i < 5; i++) { dev->resource[i].start = dev->resource[i].end = 0; dev->resource[i].flags = 0; - pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, 0); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0 + 4 * i, + 0); } } } diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c index dbb524a851a..18bf3011d1e 100644 --- a/arch/powerpc/platforms/powermac/pic.c +++ b/arch/powerpc/platforms/powermac/pic.c @@ -524,18 +524,56 @@ static void __init pmac_pic_setup_mpic_nmi(struct mpic *mpic) #endif /* defined(CONFIG_XMON) && defined(CONFIG_PPC32) */ } +static struct mpic * __init pmac_setup_one_mpic(struct device_node *np, + int master) +{ + unsigned char senses[128]; + int offset = master ? 0 : 128; + int count = master ? 128 : 124; + const char *name = master ? " MPIC 1 " : " MPIC 2 "; + struct resource r; + struct mpic *mpic; + unsigned int flags = master ? MPIC_PRIMARY : 0; + int rc; + + rc = of_address_to_resource(np, 0, &r); + if (rc) + return NULL; + + pmac_call_feature(PMAC_FTR_ENABLE_MPIC, np, 0, 0); + + prom_get_irq_senses(senses, offset, offset + count); + + flags |= MPIC_WANTS_RESET; + if (get_property(np, "big-endian", NULL)) + flags |= MPIC_BIG_ENDIAN; + + /* Primary Big Endian means HT interrupts. This is quite dodgy + * but works until I find a better way + */ + if (master && (flags & MPIC_BIG_ENDIAN)) + flags |= MPIC_BROKEN_U3; + + mpic = mpic_alloc(r.start, flags, 0, offset, count, master ? 252 : 0, + senses, count, name); + if (mpic == NULL) + return NULL; + + mpic_init(mpic); + + return mpic; + } + static int __init pmac_pic_probe_mpic(void) { struct mpic *mpic1, *mpic2; struct device_node *np, *master = NULL, *slave = NULL; - unsigned char senses[128]; - struct resource r; /* We can have up to 2 MPICs cascaded */ for (np = NULL; (np = of_find_node_by_type(np, "open-pic")) != NULL;) { if (master == NULL && - get_property(np, "interrupt-parent", NULL) != NULL) + get_property(np, "interrupts", NULL) == NULL) master = of_node_get(np); else if (slave == NULL) slave = of_node_get(np); @@ -557,13 +595,8 @@ static int __init pmac_pic_probe_mpic(void) ppc_md.get_irq = mpic_get_irq; /* Setup master */ - BUG_ON(of_address_to_resource(master, 0, &r)); - pmac_call_feature(PMAC_FTR_ENABLE_MPIC, master, 0, 0); - prom_get_irq_senses(senses, 0, 128); - mpic1 = mpic_alloc(r.start, MPIC_PRIMARY | MPIC_WANTS_RESET, - 0, 0, 128, 252, senses, 128, " OpenPIC "); + mpic1 = pmac_setup_one_mpic(master, 1); BUG_ON(mpic1 == NULL); - mpic_init(mpic1); /* Install NMI if any */ pmac_pic_setup_mpic_nmi(mpic1); @@ -574,27 +607,12 @@ static int __init pmac_pic_probe_mpic(void) if (slave == NULL || slave->n_intrs < 1) return 0; - /* Setup slave, failures are non-fatal */ - if (of_address_to_resource(slave, 0, &r)) { - printk(KERN_ERR "Can't get address of MPIC %s\n", - slave->full_name); - return 0; - } - pmac_call_feature(PMAC_FTR_ENABLE_MPIC, slave, 0, 0); - prom_get_irq_senses(senses, 128, 128 + 124); - - /* We don't need to set MPIC_BROKEN_U3 here since we don't have - * hypertransport interrupts routed to it, at least not on currently - * supported machines, that may change. - */ - mpic2 = mpic_alloc(r.start, MPIC_BIG_ENDIAN | MPIC_WANTS_RESET, - 0, 128, 124, 0, senses, 124, " U3-MPIC "); + mpic2 = pmac_setup_one_mpic(slave, 0); if (mpic2 == NULL) { - printk(KERN_ERR "Can't create slave MPIC %s\n", - slave->full_name); + printk(KERN_ERR "Failed to setup slave MPIC\n"); + of_node_put(slave); return 0; } - mpic_init(mpic2); mpic_setup_cascade(slave->intrs[0].line, pmac_u3_cascade, mpic2); of_node_put(slave); diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c index 18c5620f87f..1daa5a06e9e 100644 --- a/arch/powerpc/platforms/powermac/setup.c +++ b/arch/powerpc/platforms/powermac/setup.c @@ -345,7 +345,7 @@ void __init pmac_setup_arch(void) #ifdef CONFIG_SMP /* Check for Core99 */ - if (find_devices("uni-n") || find_devices("u3")) + if (find_devices("uni-n") || find_devices("u3") || find_devices("u4")) smp_ops = &core99_smp_ops; #ifdef CONFIG_PPC32 else @@ -635,7 +635,7 @@ static void __init pmac_init_early(void) /* Setup interrupt mapping options */ ppc64_interrupt_controller = IC_OPEN_PIC; - iommu_init_early_u3(); + iommu_init_early_dart(); #endif } @@ -711,7 +711,7 @@ static int __init pmac_probe(int platform) * occupies having to be broken up so the DART itself is not * part of the cacheable linar mapping */ - alloc_u3_dart_table(); + alloc_dart_table(); #endif #ifdef CONFIG_PMAC_SMU @@ -733,10 +733,11 @@ static int pmac_pci_probe_mode(struct pci_bus *bus) struct device_node *node = bus->sysdata; /* We need to use normal PCI probing for the AGP bus, - since the device for the AGP bridge isn't in the tree. */ - if (bus->self == NULL && device_is_compatible(node, "u3-agp")) + * since the device for the AGP bridge isn't in the tree. + */ + if (bus->self == NULL && (device_is_compatible(node, "u3-agp") || + device_is_compatible(node, "u4-pcie"))) return PCI_PROBE_NORMAL; - return PCI_PROBE_DEVTREE; } #endif diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c index 862f1e985c1..df01bb8feb1 100644 --- a/arch/powerpc/platforms/powermac/smp.c +++ b/arch/powerpc/platforms/powermac/smp.c @@ -361,7 +361,6 @@ static void __init psurge_dual_sync_tb(int cpu_nr) set_dec(tb_ticks_per_jiffy); /* XXX fixme */ set_tb(0, 0); - last_jiffy_stamp(cpu_nr) = 0; if (cpu_nr > 0) { mb(); @@ -429,15 +428,62 @@ struct smp_ops_t psurge_smp_ops = { }; #endif /* CONFIG_PPC32 - actually powersurge support */ +/* + * Core 99 and later support + */ + +static void (*pmac_tb_freeze)(int freeze); +static unsigned long timebase; +static int tb_req; + +static void smp_core99_give_timebase(void) +{ + unsigned long flags; + + local_irq_save(flags); + + while(!tb_req) + barrier(); + tb_req = 0; + (*pmac_tb_freeze)(1); + mb(); + timebase = get_tb(); + mb(); + while (timebase) + barrier(); + mb(); + (*pmac_tb_freeze)(0); + mb(); + + local_irq_restore(flags); +} + + +static void __devinit smp_core99_take_timebase(void) +{ + unsigned long flags; + + local_irq_save(flags); + + tb_req = 1; + mb(); + while (!timebase) + barrier(); + mb(); + set_tb(timebase >> 32, timebase & 0xffffffff); + timebase = 0; + mb(); + set_dec(tb_ticks_per_jiffy/2); + + local_irq_restore(flags); +} + #ifdef CONFIG_PPC64 /* * G5s enable/disable the timebase via an i2c-connected clock chip. */ static struct device_node *pmac_tb_clock_chip_host; static u8 pmac_tb_pulsar_addr; -static void (*pmac_tb_freeze)(int freeze); -static DEFINE_SPINLOCK(timebase_lock); -static unsigned long timebase; static void smp_core99_cypress_tb_freeze(int freeze) { @@ -447,7 +493,8 @@ static void smp_core99_cypress_tb_freeze(int freeze) /* Strangely, the device-tree says address is 0xd2, but darwin * accesses 0xd0 ... */ - pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_combined); + pmac_low_i2c_setmode(pmac_tb_clock_chip_host, + pmac_low_i2c_mode_combined); rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host, 0xd0 | pmac_low_i2c_read, 0x81, &data, 1); @@ -475,7 +522,8 @@ static void smp_core99_pulsar_tb_freeze(int freeze) u8 data; int rc; - pmac_low_i2c_setmode(pmac_tb_clock_chip_host, pmac_low_i2c_mode_combined); + pmac_low_i2c_setmode(pmac_tb_clock_chip_host, + pmac_low_i2c_mode_combined); rc = pmac_low_i2c_xfer(pmac_tb_clock_chip_host, pmac_tb_pulsar_addr | pmac_low_i2c_read, 0x2e, &data, 1); @@ -496,54 +544,14 @@ static void smp_core99_pulsar_tb_freeze(int freeze) } } - -static void smp_core99_give_timebase(void) -{ - /* Open i2c bus for synchronous access */ - if (pmac_low_i2c_open(pmac_tb_clock_chip_host, 0)) - panic("Can't open i2c for TB sync !\n"); - - spin_lock(&timebase_lock); - (*pmac_tb_freeze)(1); - mb(); - timebase = get_tb(); - spin_unlock(&timebase_lock); - - while (timebase) - barrier(); - - spin_lock(&timebase_lock); - (*pmac_tb_freeze)(0); - spin_unlock(&timebase_lock); - - /* Close i2c bus */ - pmac_low_i2c_close(pmac_tb_clock_chip_host); -} - - -static void __devinit smp_core99_take_timebase(void) -{ - while (!timebase) - barrier(); - spin_lock(&timebase_lock); - set_tb(timebase >> 32, timebase & 0xffffffff); - timebase = 0; - spin_unlock(&timebase_lock); -} - -static void __init smp_core99_setup(int ncpus) +static void __init smp_core99_setup_i2c_hwsync(int ncpus) { struct device_node *cc = NULL; struct device_node *p; + const char *name = NULL; u32 *reg; int ok; - /* HW sync only on these platforms */ - if (!machine_is_compatible("PowerMac7,2") && - !machine_is_compatible("PowerMac7,3") && - !machine_is_compatible("RackMac3,1")) - return; - /* Look for the clock chip */ while ((cc = of_find_node_by_name(cc, "i2c-hwclock")) != NULL) { p = of_get_parent(cc); @@ -561,114 +569,64 @@ static void __init smp_core99_setup(int ncpus) if (device_is_compatible(cc, "pulsar-legacy-slewing")) { pmac_tb_freeze = smp_core99_pulsar_tb_freeze; pmac_tb_pulsar_addr = 0xd2; - printk(KERN_INFO "Timebase clock is Pulsar chip\n"); + name = "Pulsar"; } else if (device_is_compatible(cc, "cy28508")) { pmac_tb_freeze = smp_core99_cypress_tb_freeze; - printk(KERN_INFO "Timebase clock is Cypress chip\n"); + name = "Cypress"; } break; case 0xd4: pmac_tb_freeze = smp_core99_pulsar_tb_freeze; pmac_tb_pulsar_addr = 0xd4; - printk(KERN_INFO "Timebase clock is Pulsar chip\n"); + name = "Pulsar"; break; } - if (pmac_tb_freeze != NULL) { - pmac_tb_clock_chip_host = of_get_parent(cc); - of_node_put(cc); + if (pmac_tb_freeze != NULL) break; - } } - if (pmac_tb_freeze == NULL) { - smp_ops->give_timebase = smp_generic_give_timebase; - smp_ops->take_timebase = smp_generic_take_timebase; + if (pmac_tb_freeze != NULL) { + struct device_node *p = of_get_parent(cc); + of_node_put(cc); + while(p && strcmp(p->type, "i2c")) { + cc = of_get_parent(p); + of_node_put(p); + p = cc; + } + if (p == NULL) + goto no_i2c_sync; + /* Open i2c bus for synchronous access */ + if (pmac_low_i2c_open(p, 0)) { + printk(KERN_ERR "Failed top open i2c bus %s for clock" + " sync, fallback to software sync !\n", + p->full_name); + of_node_put(p); + goto no_i2c_sync; + } + pmac_tb_clock_chip_host = p; + printk(KERN_INFO "Processor timebase sync using %s i2c clock\n", + name); + return; } + no_i2c_sync: + pmac_tb_freeze = NULL; } -/* nothing to do here, caches are already set up by service processor */ -static inline void __devinit core99_init_caches(int cpu) -{ -} +#endif /* CONFIG_PPC64 */ -#else /* CONFIG_PPC64 */ /* - * SMP G4 powermacs use a GPIO to enable/disable the timebase. + * SMP G4 and newer G5 use a GPIO to enable/disable the timebase. */ static unsigned int core99_tb_gpio; /* Timebase freeze GPIO */ -static unsigned int pri_tb_hi, pri_tb_lo; -static unsigned int pri_tb_stamp; - -/* not __init, called in sleep/wakeup code */ -void smp_core99_give_timebase(void) +static void smp_core99_gpio_tb_freeze(int freeze) { - unsigned long flags; - unsigned int t; - - /* wait for the secondary to be in take_timebase */ - for (t = 100000; t > 0 && !sec_tb_reset; --t) - udelay(10); - if (!sec_tb_reset) { - printk(KERN_WARNING "Timeout waiting sync on second CPU\n"); - return; - } - - /* freeze the timebase and read it */ - /* disable interrupts so the timebase is disabled for the - shortest possible time */ - local_irq_save(flags); - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 4); + if (freeze) + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 4); + else + pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 0); pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0); - mb(); - pri_tb_hi = get_tbu(); - pri_tb_lo = get_tbl(); - pri_tb_stamp = last_jiffy_stamp(smp_processor_id()); - mb(); - - /* tell the secondary we're ready */ - sec_tb_reset = 2; - mb(); - - /* wait for the secondary to have taken it */ - /* note: can't use udelay here, since it needs the timebase running */ - for (t = 10000000; t > 0 && sec_tb_reset; --t) - barrier(); - if (sec_tb_reset) - /* XXX BUG_ON here? */ - printk(KERN_WARNING "Timeout waiting sync(2) on second CPU\n"); - - /* Now, restart the timebase by leaving the GPIO to an open collector */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, core99_tb_gpio, 0); - pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, core99_tb_gpio, 0); - local_irq_restore(flags); -} - -/* not __init, called in sleep/wakeup code */ -void smp_core99_take_timebase(void) -{ - unsigned long flags; - - /* tell the primary we're here */ - sec_tb_reset = 1; - mb(); - - /* wait for the primary to set pri_tb_hi/lo */ - while (sec_tb_reset < 2) - mb(); - - /* set our stuff the same as the primary */ - local_irq_save(flags); - set_dec(1); - set_tb(pri_tb_hi, pri_tb_lo); - last_jiffy_stamp(smp_processor_id()) = pri_tb_stamp; - mb(); - - /* tell the primary we're done */ - sec_tb_reset = 0; - mb(); - local_irq_restore(flags); } /* L2 and L3 cache settings to pass from CPU0 to CPU1 on G4 cpus */ @@ -677,6 +635,7 @@ volatile static long int core99_l3_cache; static void __devinit core99_init_caches(int cpu) { +#ifndef CONFIG_PPC64 if (!cpu_has_feature(CPU_FTR_L2CR)) return; @@ -702,30 +661,80 @@ static void __devinit core99_init_caches(int cpu) _set_L3CR(core99_l3_cache); printk("CPU%d: L3CR set to %lx\n", cpu, core99_l3_cache); } +#endif /* !CONFIG_PPC64 */ } static void __init smp_core99_setup(int ncpus) { - struct device_node *cpu; - u32 *tbprop = NULL; - int i; +#ifdef CONFIG_PPC64 - core99_tb_gpio = KL_GPIO_TB_ENABLE; /* default value */ - cpu = of_find_node_by_type(NULL, "cpu"); - if (cpu != NULL) { - tbprop = (u32 *)get_property(cpu, "timebase-enable", NULL); - if (tbprop) - core99_tb_gpio = *tbprop; - of_node_put(cpu); + /* i2c based HW sync on some G5s */ + if (machine_is_compatible("PowerMac7,2") || + machine_is_compatible("PowerMac7,3") || + machine_is_compatible("RackMac3,1")) + smp_core99_setup_i2c_hwsync(ncpus); + + /* GPIO based HW sync on recent G5s */ + if (pmac_tb_freeze == NULL) { + struct device_node *np = + of_find_node_by_name(NULL, "timebase-enable"); + u32 *reg = (u32 *)get_property(np, "reg", NULL); + + if (np && reg && !strcmp(np->type, "gpio")) { + core99_tb_gpio = *reg; + if (core99_tb_gpio < 0x50) + core99_tb_gpio += 0x50; + pmac_tb_freeze = smp_core99_gpio_tb_freeze; + printk(KERN_INFO "Processor timebase sync using" + " GPIO 0x%02x\n", core99_tb_gpio); + } } - /* XXX should get this from reg properties */ - for (i = 1; i < ncpus; ++i) - smp_hw_index[i] = i; - powersave_nap = 0; -} +#else /* CONFIG_PPC64 */ + + /* GPIO based HW sync on ppc32 Core99 */ + if (pmac_tb_freeze == NULL && !machine_is_compatible("MacRISC4")) { + struct device_node *cpu; + u32 *tbprop = NULL; + + core99_tb_gpio = KL_GPIO_TB_ENABLE; /* default value */ + cpu = of_find_node_by_type(NULL, "cpu"); + if (cpu != NULL) { + tbprop = (u32 *)get_property(cpu, "timebase-enable", + NULL); + if (tbprop) + core99_tb_gpio = *tbprop; + of_node_put(cpu); + } + pmac_tb_freeze = smp_core99_gpio_tb_freeze; + printk(KERN_INFO "Processor timebase sync using" + " GPIO 0x%02x\n", core99_tb_gpio); + } + +#endif /* CONFIG_PPC64 */ + + /* No timebase sync, fallback to software */ + if (pmac_tb_freeze == NULL) { + smp_ops->give_timebase = smp_generic_give_timebase; + smp_ops->take_timebase = smp_generic_take_timebase; + printk(KERN_INFO "Processor timebase sync using software\n"); + } + +#ifndef CONFIG_PPC64 + { + int i; + + /* XXX should get this from reg properties */ + for (i = 1; i < ncpus; ++i) + smp_hw_index[i] = i; + } #endif + /* 32 bits SMP can't NAP */ + if (!machine_is_compatible("MacRISC4")) + powersave_nap = 0; +} + static int __init smp_core99_probe(void) { struct device_node *cpus; @@ -803,17 +812,25 @@ static void __devinit smp_core99_setup_cpu(int cpu_nr) mpic_setup_this_cpu(); if (cpu_nr == 0) { -#ifdef CONFIG_POWER4 +#ifdef CONFIG_PPC64 extern void g5_phy_disable_cpu1(void); + /* Close i2c bus if it was used for tb sync */ + if (pmac_tb_clock_chip_host) { + pmac_low_i2c_close(pmac_tb_clock_chip_host); + pmac_tb_clock_chip_host = NULL; + } + /* If we didn't start the second CPU, we must take * it off the bus */ if (machine_is_compatible("MacRISC4") && num_online_cpus() < 2) g5_phy_disable_cpu1(); -#endif /* CONFIG_POWER4 */ - if (ppc_md.progress) ppc_md.progress("core99_setup_cpu 0 done", 0x349); +#endif /* CONFIG_PPC64 */ + + if (ppc_md.progress) + ppc_md.progress("core99_setup_cpu 0 done", 0x349); } } |