#include <linux/init.h>
#include <asm/pbm.h>
-#include <asm/prom.h>
-#include <asm/of_device.h>
-
-#include "pci_impl.h"
/* Fix self device of BUS and hook it into BUS->self.
* The pci_scan_bus does not do this for the host bridge.
prom_halt();
}
-/* Find the OBP PROM device tree node for a PCI device. */
-static struct device_node * __init
-find_device_prom_node(struct pci_pbm_info *pbm, struct pci_dev *pdev,
- struct device_node *bus_node,
- struct linux_prom_pci_registers **pregs,
- int *nregs)
+/* Find the OBP PROM device tree node for a PCI device.
+ * Return zero if not found.
+ */
+static int __init find_device_prom_node(struct pci_pbm_info *pbm,
+ struct pci_dev *pdev,
+ int bus_prom_node,
+ struct linux_prom_pci_registers *pregs,
+ int *nregs)
{
- struct device_node *dp;
-
- *nregs = 0;
+ int node;
/*
* Return the PBM's PROM node in case we are it's PCI device,
pdev->device == PCI_DEVICE_ID_SUN_SCHIZO ||
pdev->device == PCI_DEVICE_ID_SUN_TOMATILLO ||
pdev->device == PCI_DEVICE_ID_SUN_SABRE ||
- pdev->device == PCI_DEVICE_ID_SUN_HUMMINGBIRD))
- return bus_node;
-
- dp = bus_node->child;
- while (dp) {
- struct linux_prom_pci_registers *regs;
- struct property *prop;
- int len;
+ pdev->device == PCI_DEVICE_ID_SUN_HUMMINGBIRD)) {
+ *nregs = 0;
+ return bus_prom_node;
+ }
- prop = of_find_property(dp, "reg", &len);
- if (!prop)
+ node = prom_getchild(bus_prom_node);
+ while (node != 0) {
+ int err = prom_getproperty(node, "reg",
+ (char *)pregs,
+ sizeof(*pregs) * PROMREG_MAX);
+ if (err == 0 || err == -1)
goto do_next_sibling;
-
- regs = prop->value;
- if (((regs[0].phys_hi >> 8) & 0xff) == pdev->devfn) {
- *pregs = regs;
- *nregs = len / sizeof(struct linux_prom_pci_registers);
- return dp;
+ if (((pregs[0].phys_hi >> 8) & 0xff) == pdev->devfn) {
+ *nregs = err / sizeof(*pregs);
+ return node;
}
do_next_sibling:
- dp = dp->sibling;
+ node = prom_getsibling(node);
}
-
- return NULL;
+ return 0;
}
/* Older versions of OBP on PCI systems encode 64-bit MEM
*/
static void __init pdev_cookie_fillin(struct pci_pbm_info *pbm,
struct pci_dev *pdev,
- struct device_node *bus_node)
+ int bus_prom_node)
{
- struct linux_prom_pci_registers *pregs = NULL;
+ struct linux_prom_pci_registers pregs[PROMREG_MAX];
struct pcidev_cookie *pcp;
- struct device_node *dp;
- struct property *prop;
- int nregs, len;
+ int device_prom_node, nregs, err;
- dp = find_device_prom_node(pbm, pdev, bus_node,
- &pregs, &nregs);
- if (!dp) {
+ device_prom_node = find_device_prom_node(pbm, pdev, bus_prom_node,
+ pregs, &nregs);
+ if (device_prom_node == 0) {
/* If it is not in the OBP device tree then
* there must be a damn good reason for it.
*
return;
}
- pcp = kzalloc(sizeof(*pcp), GFP_ATOMIC);
+ pcp = kmalloc(sizeof(*pcp), GFP_ATOMIC);
if (pcp == NULL) {
prom_printf("PCI_COOKIE: Fatal malloc error, aborting...\n");
prom_halt();
}
pcp->pbm = pbm;
- pcp->prom_node = dp;
- pcp->op = of_find_device_by_node(dp);
- memcpy(pcp->prom_regs, pregs,
- nregs * sizeof(struct linux_prom_pci_registers));
+ pcp->prom_node = device_prom_node;
+ memcpy(pcp->prom_regs, pregs, sizeof(pcp->prom_regs));
pcp->num_prom_regs = nregs;
-
- /* We can't have the pcidev_cookie assignments be just
- * direct pointers into the property value, since they
- * are potentially modified by the probing process.
- */
- prop = of_find_property(dp, "assigned-addresses", &len);
- if (!prop) {
+ err = prom_getproperty(device_prom_node, "name",
+ pcp->prom_name, sizeof(pcp->prom_name));
+ if (err > 0)
+ pcp->prom_name[err] = 0;
+ else
+ pcp->prom_name[0] = 0;
+
+ err = prom_getproperty(device_prom_node,
+ "assigned-addresses",
+ (char *)pcp->prom_assignments,
+ sizeof(pcp->prom_assignments));
+ if (err == 0 || err == -1)
pcp->num_prom_assignments = 0;
- } else {
- memcpy(pcp->prom_assignments, prop->value, len);
+ else
pcp->num_prom_assignments =
- (len / sizeof(pcp->prom_assignments[0]));
- }
+ (err / sizeof(pcp->prom_assignments[0]));
- if (strcmp(dp->name, "ebus") == 0) {
- struct linux_prom_ebus_ranges *erng;
+ if (strcmp(pcp->prom_name, "ebus") == 0) {
+ struct linux_prom_ebus_ranges erng[PROM_PCIRNG_MAX];
int iter;
/* EBUS is special... */
- prop = of_find_property(dp, "ranges", &len);
- if (!prop) {
+ err = prom_getproperty(device_prom_node, "ranges",
+ (char *)&erng[0], sizeof(erng));
+ if (err == 0 || err == -1) {
prom_printf("EBUS: Fatal error, no range property\n");
prom_halt();
}
- erng = prop->value;
- len = (len / sizeof(erng[0]));
- for (iter = 0; iter < len; iter++) {
+ err = (err / sizeof(erng[0]));
+ for(iter = 0; iter < err; iter++) {
struct linux_prom_ebus_ranges *ep = &erng[iter];
struct linux_prom_pci_registers *ap;
ap->size_hi = 0;
ap->size_lo = ep->size;
}
- pcp->num_prom_assignments = len;
+ pcp->num_prom_assignments = err;
}
fixup_obp_assignments(pdev, pcp);
void __init pci_fill_in_pbm_cookies(struct pci_bus *pbus,
struct pci_pbm_info *pbm,
- struct device_node *dp)
+ int prom_node)
{
struct pci_dev *pdev, *pdev_next;
struct pci_bus *this_pbus, *pbus_next;
/* This must be _safe because the cookie fillin
routine can delete devices from the tree. */
list_for_each_entry_safe(pdev, pdev_next, &pbus->devices, bus_list)
- pdev_cookie_fillin(pbm, pdev, dp);
+ pdev_cookie_fillin(pbm, pdev, prom_node);
list_for_each_entry_safe(this_pbus, pbus_next, &pbus->children, node) {
struct pcidev_cookie *pcp = this_pbus->self->sysdata;
if (res)
prom_printf("PCI: RES[%016lx-->%016lx:(%lx)]\n",
res->start, res->end, res->flags);
+ prom_printf("Please email this information to davem@redhat.com\n");
if (do_prom_halt)
prom_halt();
}
return &pbm->mem_space;
default:
- printk("PCI: What is resource space %x?\n", space);
+ printk("PCI: What is resource space %x? "
+ "Tell davem@redhat.com about it!\n", space);
return NULL;
};
}
return res;
}
+static int __init pdev_resource_collisions_expected(struct pci_dev *pdev)
+{
+ if (pdev->vendor != PCI_VENDOR_ID_SUN)
+ return 0;
+
+ if (pdev->device == PCI_DEVICE_ID_SUN_RIO_EBUS ||
+ pdev->device == PCI_DEVICE_ID_SUN_RIO_1394 ||
+ pdev->device == PCI_DEVICE_ID_SUN_RIO_USB)
+ return 1;
+
+ return 0;
+}
+
static void __init pdev_record_assignments(struct pci_pbm_info *pbm,
struct pci_dev *pdev)
{
pbm->parent->resource_adjust(pdev, res, root);
if (request_resource(root, res) < 0) {
- int rnum;
-
/* OK, there is some conflict. But this is fine
* since we'll reassign it in the fixup pass.
*
- * Do not print the warning for ROM resources
- * as such a conflict is quite common and
- * harmless as the ROM bar is disabled.
+ * We notify the user that OBP made an error if it
+ * is a case we don't expect.
*/
- rnum = (res - &pdev->resource[0]);
- if (rnum != PCI_ROM_RESOURCE)
- printk(KERN_ERR "PCI: Resource collision, "
- "region %d "
+ if (!pdev_resource_collisions_expected(pdev)) {
+ printk(KERN_ERR "PCI: Address space collision on region %ld "
"[%016lx:%016lx] of device %s\n",
- rnum,
+ (res - &pdev->resource[0]),
res->start, res->end,
pci_name(pdev));
+ }
}
}
}
pci_assign_unassigned(pbm, bus);
}
+static int __init pci_intmap_match(struct pci_dev *pdev, unsigned int *interrupt)
+{
+ struct linux_prom_pci_intmap bridge_local_intmap[PROM_PCIIMAP_MAX], *intmap;
+ struct linux_prom_pci_intmask bridge_local_intmask, *intmask;
+ struct pcidev_cookie *dev_pcp = pdev->sysdata;
+ struct pci_pbm_info *pbm = dev_pcp->pbm;
+ struct linux_prom_pci_registers *pregs = dev_pcp->prom_regs;
+ unsigned int hi, mid, lo, irq;
+ int i, num_intmap, map_slot;
+
+ intmap = &pbm->pbm_intmap[0];
+ intmask = &pbm->pbm_intmask;
+ num_intmap = pbm->num_pbm_intmap;
+ map_slot = 0;
+
+ /* If we are underneath a PCI bridge, use PROM register
+ * property of the parent bridge which is closest to
+ * the PBM.
+ *
+ * However if that parent bridge has interrupt map/mask
+ * properties of its own we use the PROM register property
+ * of the next child device on the path to PDEV.
+ *
+ * In detail the two cases are (note that the 'X' below is the
+ * 'next child on the path to PDEV' mentioned above):
+ *
+ * 1) PBM --> PCI bus lacking int{map,mask} --> X ... PDEV
+ *
+ * Here we use regs of 'PCI bus' device.
+ *
+ * 2) PBM --> PCI bus with int{map,mask} --> X ... PDEV
+ *
+ * Here we use regs of 'X'. Note that X can be PDEV.
+ */
+ if (pdev->bus->number != pbm->pci_first_busno) {
+ struct pcidev_cookie *bus_pcp, *regs_pcp;
+ struct pci_dev *bus_dev, *regs_dev;
+ int plen;
+
+ bus_dev = pdev->bus->self;
+ regs_dev = pdev;
+
+ while (bus_dev->bus &&
+ bus_dev->bus->number != pbm->pci_first_busno) {
+ regs_dev = bus_dev;
+ bus_dev = bus_dev->bus->self;
+ }
+
+ regs_pcp = regs_dev->sysdata;
+ pregs = regs_pcp->prom_regs;
+
+ bus_pcp = bus_dev->sysdata;
+
+ /* But if the PCI bridge has it's own interrupt map
+ * and mask properties, use that and the regs of the
+ * PCI entity at the next level down on the path to the
+ * device.
+ */
+ plen = prom_getproperty(bus_pcp->prom_node, "interrupt-map",
+ (char *) &bridge_local_intmap[0],
+ sizeof(bridge_local_intmap));
+ if (plen != -1) {
+ intmap = &bridge_local_intmap[0];
+ num_intmap = plen / sizeof(struct linux_prom_pci_intmap);
+ plen = prom_getproperty(bus_pcp->prom_node,
+ "interrupt-map-mask",
+ (char *) &bridge_local_intmask,
+ sizeof(bridge_local_intmask));
+ if (plen == -1) {
+ printk("pci_intmap_match: Warning! Bridge has intmap "
+ "but no intmask.\n");
+ printk("pci_intmap_match: Trying to recover.\n");
+ return 0;
+ }
+
+ if (pdev->bus->self != bus_dev)
+ map_slot = 1;
+ } else {
+ pregs = bus_pcp->prom_regs;
+ map_slot = 1;
+ }
+ }
+
+ if (map_slot) {
+ *interrupt = ((*interrupt
+ - 1
+ + PCI_SLOT(pdev->devfn)) & 0x3) + 1;
+ }
+
+ hi = pregs->phys_hi & intmask->phys_hi;
+ mid = pregs->phys_mid & intmask->phys_mid;
+ lo = pregs->phys_lo & intmask->phys_lo;
+ irq = *interrupt & intmask->interrupt;
+
+ for (i = 0; i < num_intmap; i++) {
+ if (intmap[i].phys_hi == hi &&
+ intmap[i].phys_mid == mid &&
+ intmap[i].phys_lo == lo &&
+ intmap[i].interrupt == irq) {
+ *interrupt = intmap[i].cinterrupt;
+ printk("PCI-IRQ: Routing bus[%2x] slot[%2x] map[%d] to INO[%02x]\n",
+ pdev->bus->number, PCI_SLOT(pdev->devfn),
+ map_slot, *interrupt);
+ return 1;
+ }
+ }
+
+ /* We will run this code even if pbm->num_pbm_intmap is zero, just so
+ * we can apply the slot mapping to the PROM interrupt property value.
+ * So do not spit out these warnings in that case.
+ */
+ if (num_intmap != 0) {
+ /* Print it both to OBP console and kernel one so that if bootup
+ * hangs here the user has the information to report.
+ */
+ prom_printf("pci_intmap_match: bus %02x, devfn %02x: ",
+ pdev->bus->number, pdev->devfn);
+ prom_printf("IRQ [%08x.%08x.%08x.%08x] not found in interrupt-map\n",
+ pregs->phys_hi, pregs->phys_mid, pregs->phys_lo, *interrupt);
+ prom_printf("Please email this information to davem@redhat.com\n");
+
+ printk("pci_intmap_match: bus %02x, devfn %02x: ",
+ pdev->bus->number, pdev->devfn);
+ printk("IRQ [%08x.%08x.%08x.%08x] not found in interrupt-map\n",
+ pregs->phys_hi, pregs->phys_mid, pregs->phys_lo, *interrupt);
+ printk("Please email this information to davem@redhat.com\n");
+ }
+
+ return 0;
+}
+
static void __init pdev_fixup_irq(struct pci_dev *pdev)
{
struct pcidev_cookie *pcp = pdev->sysdata;
- struct of_device *op = pcp->op;
+ struct pci_pbm_info *pbm = pcp->pbm;
+ struct pci_controller_info *p = pbm->parent;
+ unsigned int portid = pbm->portid;
+ unsigned int prom_irq;
+ int prom_node = pcp->prom_node;
+ int err;
+
+ /* If this is an empty EBUS device, sometimes OBP fails to
+ * give it a valid fully specified interrupts property.
+ * The EBUS hooked up to SunHME on PCI I/O boards of
+ * Ex000 systems is one such case.
+ *
+ * The interrupt is not important so just ignore it.
+ */
+ if (pdev->vendor == PCI_VENDOR_ID_SUN &&
+ pdev->device == PCI_DEVICE_ID_SUN_EBUS &&
+ !prom_getchild(prom_node)) {
+ pdev->irq = 0;
+ return;
+ }
- if (op->irqs[0] == 0xffffffff) {
- pdev->irq = PCI_IRQ_NONE;
+ err = prom_getproperty(prom_node, "interrupts",
+ (char *)&prom_irq, sizeof(prom_irq));
+ if (err == 0 || err == -1) {
+ pdev->irq = 0;
return;
}
- pdev->irq = op->irqs[0];
+ /* Fully specified already? */
+ if (((prom_irq & PCI_IRQ_IGN) >> 6) == portid) {
+ pdev->irq = p->irq_build(pbm, pdev, prom_irq);
+ goto have_irq;
+ }
+
+ /* An onboard device? (bit 5 set) */
+ if ((prom_irq & PCI_IRQ_INO) & 0x20) {
+ pdev->irq = p->irq_build(pbm, pdev, (portid << 6 | prom_irq));
+ goto have_irq;
+ }
+
+ /* Can we find a matching entry in the interrupt-map? */
+ if (pci_intmap_match(pdev, &prom_irq)) {
+ pdev->irq = p->irq_build(pbm, pdev, (portid << 6) | prom_irq);
+ goto have_irq;
+ }
+
+ /* Ok, we have to do it the hard way. */
+ {
+ unsigned int bus, slot, line;
+
+ bus = (pbm == &pbm->parent->pbm_B) ? (1 << 4) : 0;
+
+ /* If we have a legal interrupt property, use it as
+ * the IRQ line.
+ */
+ if (prom_irq > 0 && prom_irq < 5) {
+ line = ((prom_irq - 1) & 3);
+ } else {
+ u8 pci_irq_line;
+
+ /* Else just directly consult PCI config space. */
+ pci_read_config_byte(pdev, PCI_INTERRUPT_PIN, &pci_irq_line);
+ line = ((pci_irq_line - 1) & 3);
+ }
+
+ /* Now figure out the slot.
+ *
+ * Basically, device number zero on the top-level bus is
+ * always the PCI host controller. Slot 0 is then device 1.
+ * PBM A supports two external slots (0 and 1), and PBM B
+ * supports 4 external slots (0, 1, 2, and 3). On-board PCI
+ * devices are wired to device numbers outside of these
+ * ranges. -DaveM
+ */
+ if (pdev->bus->number == pbm->pci_first_busno) {
+ slot = PCI_SLOT(pdev->devfn) - pbm->pci_first_slot;
+ } else {
+ struct pci_dev *bus_dev;
+
+ /* Underneath a bridge, use slot number of parent
+ * bridge which is closest to the PBM.
+ */
+ bus_dev = pdev->bus->self;
+ while (bus_dev->bus &&
+ bus_dev->bus->number != pbm->pci_first_busno)
+ bus_dev = bus_dev->bus->self;
+
+ slot = PCI_SLOT(bus_dev->devfn) - pbm->pci_first_slot;
+ }
+ slot = slot << 2;
+
+ pdev->irq = p->irq_build(pbm, pdev,
+ ((portid << 6) & PCI_IRQ_IGN) |
+ (bus | slot | line));
+ }
+have_irq:
pci_write_config_byte(pdev, PCI_INTERRUPT_LINE,
pdev->irq & PCI_IRQ_INO);
}
struct resource *p;
/* VGA Video RAM. */
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return;
+ memset(p, 0, sizeof(*p));
p->name = "Video RAM area";
p->start = mem_res->start + 0xa0000UL;
p->end = p->start + 0x1ffffUL;
p->flags = IORESOURCE_BUSY;
request_resource(mem_res, p);
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return;
+ memset(p, 0, sizeof(*p));
p->name = "System ROM";
p->start = mem_res->start + 0xf0000UL;
p->end = p->start + 0xffffUL;
p->flags = IORESOURCE_BUSY;
request_resource(mem_res, p);
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
if (!p)
return;
+ memset(p, 0, sizeof(*p));
p->name = "Video ROM";
p->start = mem_res->start + 0xc0000UL;
p->end = p->start + 0x7fffUL;
git://git.onelab.eu / linux-2.6.git / blobdiff