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Diffstat (limited to 'arch/sparc64/kernel/pci_sabre.c')
-rw-r--r--arch/sparc64/kernel/pci_sabre.c430
1 files changed, 105 insertions, 325 deletions
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index f67bb7f078cf..45891850b90d 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -19,6 +19,7 @@
#include <asm/irq.h>
#include <asm/smp.h>
#include <asm/oplib.h>
+#include <asm/prom.h>
#include "pci_impl.h"
#include "iommu_common.h"
@@ -484,191 +485,6 @@ static struct pci_ops sabre_ops = {
.write = sabre_write_pci_cfg,
};
-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);
-}
-
-static unsigned long __onboard_imap_off[] = {
-/*0x20*/ SABRE_IMAP_SCSI,
-/*0x21*/ SABRE_IMAP_ETH,
-/*0x22*/ SABRE_IMAP_BPP,
-/*0x23*/ SABRE_IMAP_AU_REC,
-/*0x24*/ SABRE_IMAP_AU_PLAY,
-/*0x25*/ SABRE_IMAP_PFAIL,
-/*0x26*/ SABRE_IMAP_KMS,
-/*0x27*/ SABRE_IMAP_FLPY,
-/*0x28*/ SABRE_IMAP_SHW,
-/*0x29*/ SABRE_IMAP_KBD,
-/*0x2a*/ SABRE_IMAP_MS,
-/*0x2b*/ SABRE_IMAP_SER,
-/*0x2c*/ 0 /* reserved */,
-/*0x2d*/ 0 /* reserved */,
-/*0x2e*/ SABRE_IMAP_UE,
-/*0x2f*/ SABRE_IMAP_CE,
-/*0x30*/ SABRE_IMAP_PCIERR,
-};
-#define SABRE_ONBOARD_IRQ_BASE 0x20
-#define SABRE_ONBOARD_IRQ_LAST 0x30
-#define sabre_onboard_imap_offset(__ino) \
- __onboard_imap_off[(__ino) - SABRE_ONBOARD_IRQ_BASE]
-
-#define sabre_iclr_offset(ino) \
- ((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \
- (SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3)))
-
-/* PCI SABRE INO number to Sparc PIL level. */
-static unsigned char sabre_pil_table[] = {
-/*0x00*/0, 0, 0, 0, /* PCI A slot 0 Int A, B, C, D */
-/*0x04*/0, 0, 0, 0, /* PCI A slot 1 Int A, B, C, D */
-/*0x08*/0, 0, 0, 0, /* PCI A slot 2 Int A, B, C, D */
-/*0x0c*/0, 0, 0, 0, /* PCI A slot 3 Int A, B, C, D */
-/*0x10*/0, 0, 0, 0, /* PCI B slot 0 Int A, B, C, D */
-/*0x14*/0, 0, 0, 0, /* PCI B slot 1 Int A, B, C, D */
-/*0x18*/0, 0, 0, 0, /* PCI B slot 2 Int A, B, C, D */
-/*0x1c*/0, 0, 0, 0, /* PCI B slot 3 Int A, B, C, D */
-/*0x20*/5, /* SCSI */
-/*0x21*/5, /* Ethernet */
-/*0x22*/8, /* Parallel Port */
-/*0x23*/13, /* Audio Record */
-/*0x24*/14, /* Audio Playback */
-/*0x25*/15, /* PowerFail */
-/*0x26*/5, /* second SCSI */
-/*0x27*/11, /* Floppy */
-/*0x28*/5, /* Spare Hardware */
-/*0x29*/9, /* Keyboard */
-/*0x2a*/5, /* Mouse */
-/*0x2b*/12, /* Serial */
-/*0x2c*/10, /* Timer 0 */
-/*0x2d*/11, /* Timer 1 */
-/*0x2e*/15, /* Uncorrectable ECC */
-/*0x2f*/15, /* Correctable ECC */
-/*0x30*/15, /* PCI Bus A Error */
-/*0x31*/15, /* PCI Bus B Error */
-/*0x32*/15, /* Power Management */
-};
-
-static int sabre_ino_to_pil(struct pci_dev *pdev, unsigned int ino)
-{
- int ret;
-
- if (pdev &&
- pdev->vendor == PCI_VENDOR_ID_SUN &&
- pdev->device == PCI_DEVICE_ID_SUN_RIO_USB)
- return 9;
-
- ret = sabre_pil_table[ino];
- if (ret == 0 && pdev == NULL) {
- ret = 5;
- } else if (ret == 0) {
- switch ((pdev->class >> 16) & 0xff) {
- case PCI_BASE_CLASS_STORAGE:
- ret = 5;
- break;
-
- case PCI_BASE_CLASS_NETWORK:
- ret = 6;
- break;
-
- case PCI_BASE_CLASS_DISPLAY:
- ret = 9;
- break;
-
- case PCI_BASE_CLASS_MULTIMEDIA:
- case PCI_BASE_CLASS_MEMORY:
- case PCI_BASE_CLASS_BRIDGE:
- case PCI_BASE_CLASS_SERIAL:
- ret = 10;
- break;
-
- default:
- ret = 5;
- break;
- };
- }
- return ret;
-}
-
-/* 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(struct ino_bucket *bucket, void *_arg1, void *_arg2)
-{
- struct pci_dev *pdev = _arg1;
- unsigned long sync_reg = (unsigned long) _arg2;
- u16 _unused;
-
- pci_read_config_word(pdev, PCI_VENDOR_ID, &_unused);
- sabre_read(sync_reg);
-}
-
-static unsigned int sabre_irq_build(struct pci_pbm_info *pbm,
- struct pci_dev *pdev,
- unsigned int ino)
-{
- struct ino_bucket *bucket;
- unsigned long imap, iclr;
- unsigned long imap_off, iclr_off;
- int pil, inofixup = 0;
-
- ino &= PCI_IRQ_INO;
- if (ino < SABRE_ONBOARD_IRQ_BASE) {
- /* PCI slot */
- imap_off = sabre_pcislot_imap_offset(ino);
- } else {
- /* onboard device */
- if (ino > SABRE_ONBOARD_IRQ_LAST) {
- prom_printf("sabre_irq_build: Wacky INO [%x]\n", ino);
- prom_halt();
- }
- imap_off = sabre_onboard_imap_offset(ino);
- }
-
- /* Now build the IRQ bucket. */
- pil = sabre_ino_to_pil(pdev, ino);
-
- if (PIL_RESERVED(pil))
- BUG();
-
- imap = pbm->controller_regs + imap_off;
- imap += 4;
-
- iclr_off = sabre_iclr_offset(ino);
- iclr = pbm->controller_regs + iclr_off;
- iclr += 4;
-
- if ((ino & 0x20) == 0)
- inofixup = ino & 0x03;
-
- bucket = __bucket(build_irq(pil, inofixup, iclr, imap));
- bucket->flags |= IBF_PCI;
-
- if (pdev) {
- struct pcidev_cookie *pcp = pdev->sysdata;
-
- if (pdev->bus->number != pcp->pbm->pci_first_busno) {
- struct pci_controller_info *p = pcp->pbm->parent;
- struct irq_desc *d = bucket->irq_info;
-
- d->pre_handler = sabre_wsync_handler;
- d->pre_handler_arg1 = pdev;
- d->pre_handler_arg2 = (void *)
- p->pbm_A.controller_regs + SABRE_WRSYNC;
- }
- }
- return __irq(bucket);
-}
-
/* SABRE error handling support. */
static void sabre_check_iommu_error(struct pci_controller_info *p,
unsigned long afsr,
@@ -1005,17 +821,30 @@ static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs
return IRQ_HANDLED;
}
-/* XXX What about PowerFail/PowerManagement??? -DaveM */
-#define SABRE_UE_INO 0x2e
-#define SABRE_CE_INO 0x2f
-#define SABRE_PCIERR_INO 0x30
static void sabre_register_error_handlers(struct pci_controller_info *p)
{
struct pci_pbm_info *pbm = &p->pbm_A; /* arbitrary */
+ struct device_node *dp = pbm->prom_node;
+ struct of_device *op;
unsigned long base = pbm->controller_regs;
- unsigned long irq, portid = pbm->portid;
u64 tmp;
+ if (pbm->chip_type == PBM_CHIP_TYPE_SABRE)
+ dp = dp->parent;
+
+ op = of_find_device_by_node(dp);
+ if (!op)
+ return;
+
+ /* Sabre/Hummingbird IRQ property layout is:
+ * 0: PCI ERR
+ * 1: UE ERR
+ * 2: CE ERR
+ * 3: POWER FAIL
+ */
+ if (op->num_irqs < 4)
+ return;
+
/* We clear the error bits in the appropriate AFSR before
* registering the handler so that we don't get spurious
* interrupts.
@@ -1024,32 +853,16 @@ static void sabre_register_error_handlers(struct pci_controller_info *p)
(SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR |
SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR |
SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE));
- irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_UE_INO);
- if (request_irq(irq, sabre_ue_intr,
- SA_SHIRQ, "SABRE UE", p) < 0) {
- prom_printf("SABRE%d: Cannot register UE interrupt.\n",
- p->index);
- prom_halt();
- }
+
+ request_irq(op->irqs[1], sabre_ue_intr, IRQF_SHARED, "SABRE UE", p);
sabre_write(base + SABRE_CE_AFSR,
(SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR |
SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR));
- irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_CE_INO);
- if (request_irq(irq, sabre_ce_intr,
- SA_SHIRQ, "SABRE CE", p) < 0) {
- prom_printf("SABRE%d: Cannot register CE interrupt.\n",
- p->index);
- prom_halt();
- }
- irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_PCIERR_INO);
- if (request_irq(irq, sabre_pcierr_intr,
- SA_SHIRQ, "SABRE PCIERR", p) < 0) {
- prom_printf("SABRE%d: Cannot register PciERR interrupt.\n",
- p->index);
- prom_halt();
- }
+ request_irq(op->irqs[2], sabre_ce_intr, IRQF_SHARED, "SABRE CE", p);
+ request_irq(op->irqs[0], sabre_pcierr_intr, IRQF_SHARED,
+ "SABRE PCIERR", p);
tmp = sabre_read(base + SABRE_PCICTRL);
tmp |= SABRE_PCICTRL_ERREN;
@@ -1383,34 +1196,36 @@ 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;
@@ -1418,83 +1233,68 @@ 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. */
@@ -1520,14 +1320,15 @@ 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;
@@ -1535,22 +1336,21 @@ 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 {
- int cpu_node;
+ if (!strcmp(compat, "pci108e,a001"))
+ hummingbird_p = 1;
+ }
+ if (!hummingbird_p) {
+ struct device_node *dp;
/* Of course, Sun has to encode things a thousand
* different ways, inconsistently.
*/
- cpu_find_by_instance(0, &cpu_node, NULL);
- if (prom_getproperty(cpu_node, "name",
- compat, sizeof(compat)) > 0 &&
- !strcmp(compat, "SUNW,UltraSPARC-IIe"))
+ cpu_find_by_instance(0, &dp, NULL);
+ if (!strcmp(dp->name, "SUNW,UltraSPARC-IIe"))
hummingbird_p = 1;
}
}
@@ -1568,7 +1368,10 @@ 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;
@@ -1578,7 +1381,6 @@ void sabre_init(int pnode, char *model_name)
p->index = pci_num_controllers++;
p->pbms_same_domain = 1;
p->scan_bus = sabre_scan_bus;
- p->irq_build = sabre_irq_build;
p->base_address_update = sabre_base_address_update;
p->resource_adjust = sabre_resource_adjust;
p->pci_ops = &sabre_ops;
@@ -1586,13 +1388,9 @@ 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.
@@ -1600,9 +1398,6 @@ 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 */
@@ -1621,16 +1416,9 @@ 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]) {
@@ -1654,21 +1442,13 @@ 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]);
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-23 06:47:38 +0100