From e87dc35020bc555969810452f44bceaf8394eafa Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 21 Jun 2006 18:18:47 -0700 Subject: [SPARC64]: Use in-kernel OBP device tree for PCI controller probing. It can be pushed even further down, but this is a first step. Signed-off-by: David S. Miller --- arch/sparc64/kernel/pci_sabre.c | 192 +++++++++++++++++----------------------- 1 file changed, 82 insertions(+), 110 deletions(-) (limited to 'arch/sparc64/kernel/pci_sabre.c') diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c index b7d997b55f0a..91d1aa44efc1 100644 --- a/arch/sparc64/kernel/pci_sabre.c +++ b/arch/sparc64/kernel/pci_sabre.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "pci_impl.h" #include "iommu_common.h" @@ -1160,7 +1161,7 @@ static void sabre_scan_bus(struct pci_controller_info *p) pbus->sysdata = pbm; pbm->pci_bus = pbus; - pci_fill_in_pbm_cookies(pbus, pbm, pbm->prom_node); + pci_fill_in_pbm_cookies(pbus, pbm, pbm->prom_node->node); pci_record_assignments(pbm, pbus); pci_assign_unassigned(pbm, pbus); pci_fixup_irq(pbm, pbus); @@ -1173,7 +1174,7 @@ static void sabre_scan_bus(struct pci_controller_info *p) pbm = &p->pbm_A; sabre_bus->sysdata = pbm; pbm->pci_bus = sabre_bus; - pci_fill_in_pbm_cookies(sabre_bus, pbm, pbm->prom_node); + pci_fill_in_pbm_cookies(sabre_bus, pbm, pbm->prom_node->node); pci_record_assignments(pbm, sabre_bus); pci_assign_unassigned(pbm, sabre_bus); pci_fixup_irq(pbm, sabre_bus); @@ -1306,34 +1307,36 @@ static void pbm_register_toplevel_resources(struct pci_controller_info *p, &pbm->mem_space); } -static void sabre_pbm_init(struct pci_controller_info *p, int sabre_node, u32 dma_begin) +static void sabre_pbm_init(struct pci_controller_info *p, struct device_node *dp, u32 dma_begin) { struct pci_pbm_info *pbm; - char namebuf[128]; - u32 busrange[2]; - int node, simbas_found; + struct device_node *node; + struct property *prop; + u32 *busrange; + int len, simbas_found; simbas_found = 0; - node = prom_getchild(sabre_node); - while ((node = prom_searchsiblings(node, "pci")) != 0) { - int err; - - err = prom_getproperty(node, "model", namebuf, sizeof(namebuf)); - if ((err <= 0) || strncmp(namebuf, "SUNW,simba", err)) + node = dp->child; + while (node != NULL) { + if (strcmp(node->name, "pci")) goto next_pci; - err = prom_getproperty(node, "bus-range", - (char *)&busrange[0], sizeof(busrange)); - if (err == 0 || err == -1) { - prom_printf("APB: Error, cannot get PCI bus-range.\n"); - prom_halt(); - } + prop = of_find_property(node, "model", NULL); + if (!prop || strncmp(prop->value, "SUNW,simba", prop->length)) + goto next_pci; simbas_found++; + + prop = of_find_property(node, "bus-range", NULL); + busrange = prop->value; if (busrange[0] == 1) pbm = &p->pbm_B; else pbm = &p->pbm_A; + + pbm->name = node->full_name; + printk("%s: SABRE PCI Bus Module\n", pbm->name); + pbm->chip_type = PBM_CHIP_TYPE_SABRE; pbm->parent = p; pbm->prom_node = node; @@ -1341,83 +1344,68 @@ static void sabre_pbm_init(struct pci_controller_info *p, int sabre_node, u32 dm pbm->pci_first_busno = busrange[0]; pbm->pci_last_busno = busrange[1]; - prom_getstring(node, "name", pbm->prom_name, sizeof(pbm->prom_name)); - err = prom_getproperty(node, "ranges", - (char *)pbm->pbm_ranges, - sizeof(pbm->pbm_ranges)); - if (err != -1) + prop = of_find_property(node, "ranges", &len); + if (prop) { + pbm->pbm_ranges = prop->value; pbm->num_pbm_ranges = - (err / sizeof(struct linux_prom_pci_ranges)); - else + (len / sizeof(struct linux_prom_pci_ranges)); + } else { pbm->num_pbm_ranges = 0; + } - err = prom_getproperty(node, "interrupt-map", - (char *)pbm->pbm_intmap, - sizeof(pbm->pbm_intmap)); - if (err != -1) { - pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap)); - err = prom_getproperty(node, "interrupt-map-mask", - (char *)&pbm->pbm_intmask, - sizeof(pbm->pbm_intmask)); - if (err == -1) { - prom_printf("APB: Fatal error, no interrupt-map-mask.\n"); - prom_halt(); - } + prop = of_find_property(node, "interrupt-map", &len); + if (prop) { + pbm->pbm_intmap = prop->value; + pbm->num_pbm_intmap = + (len / sizeof(struct linux_prom_pci_intmap)); + + prop = of_find_property(node, "interrupt-map-mask", + NULL); + pbm->pbm_intmask = prop->value; } else { pbm->num_pbm_intmap = 0; - memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask)); } pbm_register_toplevel_resources(p, pbm); next_pci: - node = prom_getsibling(node); - if (!node) - break; + node = node->sibling; } if (simbas_found == 0) { - int err; - /* No APBs underneath, probably this is a hummingbird * system. */ pbm = &p->pbm_A; pbm->parent = p; - pbm->prom_node = sabre_node; + pbm->prom_node = dp; pbm->pci_first_busno = p->pci_first_busno; pbm->pci_last_busno = p->pci_last_busno; - prom_getstring(sabre_node, "name", pbm->prom_name, sizeof(pbm->prom_name)); - err = prom_getproperty(sabre_node, "ranges", - (char *) pbm->pbm_ranges, - sizeof(pbm->pbm_ranges)); - if (err != -1) + prop = of_find_property(dp, "ranges", &len); + if (prop) { + pbm->pbm_ranges = prop->value; pbm->num_pbm_ranges = - (err / sizeof(struct linux_prom_pci_ranges)); - else + (len / sizeof(struct linux_prom_pci_ranges)); + } else { pbm->num_pbm_ranges = 0; + } - err = prom_getproperty(sabre_node, "interrupt-map", - (char *) pbm->pbm_intmap, - sizeof(pbm->pbm_intmap)); - - if (err != -1) { - pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap)); - err = prom_getproperty(sabre_node, "interrupt-map-mask", - (char *)&pbm->pbm_intmask, - sizeof(pbm->pbm_intmask)); - if (err == -1) { - prom_printf("Hummingbird: Fatal error, no interrupt-map-mask.\n"); - prom_halt(); - } + prop = of_find_property(dp, "interrupt-map", &len); + if (prop) { + pbm->pbm_intmap = prop->value; + pbm->num_pbm_intmap = + (len / sizeof(struct linux_prom_pci_intmap)); + + prop = of_find_property(dp, "interrupt-map-mask", + NULL); + pbm->pbm_intmask = prop->value; } else { pbm->num_pbm_intmap = 0; - memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask)); } + pbm->name = dp->full_name; + printk("%s: SABRE PCI Bus Module\n", pbm->name); - sprintf(pbm->name, "SABRE%d PBM%c", p->index, - (pbm == &p->pbm_A ? 'A' : 'B')); pbm->io_space.name = pbm->mem_space.name = pbm->name; /* Hack up top-level resources. */ @@ -1443,14 +1431,15 @@ static void sabre_pbm_init(struct pci_controller_info *p, int sabre_node, u32 dm } } -void sabre_init(int pnode, char *model_name) +void sabre_init(struct device_node *dp, char *model_name) { - struct linux_prom64_registers pr_regs[2]; + struct linux_prom64_registers *pr_regs; struct pci_controller_info *p; struct pci_iommu *iommu; - int tsbsize, err; - u32 busrange[2]; - u32 vdma[2]; + struct property *prop; + int tsbsize; + u32 *busrange; + u32 *vdma; u32 upa_portid, dma_mask; u64 clear_irq; @@ -1458,13 +1447,15 @@ void sabre_init(int pnode, char *model_name) if (!strcmp(model_name, "pci108e,a001")) hummingbird_p = 1; else if (!strcmp(model_name, "SUNW,sabre")) { - char compat[64]; + prop = of_find_property(dp, "compatible", NULL); + if (prop) { + const char *compat = prop->value; - if (prom_getproperty(pnode, "compatible", - compat, sizeof(compat)) > 0 && - !strcmp(compat, "pci108e,a001")) { - hummingbird_p = 1; - } else { + if (!strcmp(compat, "pci108e,a001")) + hummingbird_p = 1; + } + if (!hummingbird_p) { + char compat[64]; int cpu_node; /* Of course, Sun has to encode things a thousand @@ -1491,7 +1482,10 @@ void sabre_init(int pnode, char *model_name) } p->pbm_A.iommu = p->pbm_B.iommu = iommu; - upa_portid = prom_getintdefault(pnode, "upa-portid", 0xff); + upa_portid = 0xff; + prop = of_find_property(dp, "upa-portid", NULL); + if (prop) + upa_portid = *(u32 *) prop->value; p->next = pci_controller_root; pci_controller_root = p; @@ -1509,13 +1503,9 @@ void sabre_init(int pnode, char *model_name) /* * Map in SABRE register set and report the presence of this SABRE. */ - err = prom_getproperty(pnode, "reg", - (char *)&pr_regs[0], sizeof(pr_regs)); - if(err == 0 || err == -1) { - prom_printf("SABRE: Error, cannot get U2P registers " - "from PROM.\n"); - prom_halt(); - } + + prop = of_find_property(dp, "reg", NULL); + pr_regs = prop->value; /* * First REG in property is base of entire SABRE register space. @@ -1523,9 +1513,6 @@ void sabre_init(int pnode, char *model_name) p->pbm_A.controller_regs = pr_regs[0].phys_addr; p->pbm_B.controller_regs = pr_regs[0].phys_addr; - printk("PCI: Found SABRE, main regs at %016lx\n", - p->pbm_A.controller_regs); - /* Clear interrupts */ /* PCI first */ @@ -1544,16 +1531,9 @@ void sabre_init(int pnode, char *model_name) /* Now map in PCI config space for entire SABRE. */ p->pbm_A.config_space = p->pbm_B.config_space = (p->pbm_A.controller_regs + SABRE_CONFIGSPACE); - printk("SABRE: Shared PCI config space at %016lx\n", - p->pbm_A.config_space); - - err = prom_getproperty(pnode, "virtual-dma", - (char *)&vdma[0], sizeof(vdma)); - if(err == 0 || err == -1) { - prom_printf("SABRE: Error, cannot get virtual-dma property " - "from PROM.\n"); - prom_halt(); - } + + prop = of_find_property(dp, "virtual-dma", NULL); + vdma = prop->value; dma_mask = vdma[0]; switch(vdma[1]) { @@ -1577,21 +1557,13 @@ void sabre_init(int pnode, char *model_name) sabre_iommu_init(p, tsbsize, vdma[0], dma_mask); - printk("SABRE: DVMA at %08x [%08x]\n", vdma[0], vdma[1]); - - err = prom_getproperty(pnode, "bus-range", - (char *)&busrange[0], sizeof(busrange)); - if(err == 0 || err == -1) { - prom_printf("SABRE: Error, cannot get PCI bus-range " - " from PROM.\n"); - prom_halt(); - } - + prop = of_find_property(dp, "bus-range", NULL); + busrange = prop->value; p->pci_first_busno = busrange[0]; p->pci_last_busno = busrange[1]; /* * Look for APB underneath. */ - sabre_pbm_init(p, pnode, vdma[0]); + sabre_pbm_init(p, dp, vdma[0]); } -- cgit v1.2.3