Merge branch 'master' of /home/trondmy/kernel/linux-2.6/

1 files changed, 122 insertions, 105 deletions

diff --git a/arch/sparc64/kernel/pci_common.c b/arch/sparc64/kernel/pci_common.c
index 33dedb1aacd..b06a2955bf5 100644
--- a/arch/sparc64/kernel/pci_common.c
+++ b/arch/sparc64/kernel/pci_common.c
@@ -9,6 +9,12 @@
 #include <linux/init.h>
 
 #include <asm/pbm.h>
+#include <asm/prom.h>
+
+#include "pci_impl.h"
+
+/* Pass "pci=irq_verbose" on the kernel command line to enable this.  */
+int pci_irq_verbose;
 
 /* Fix self device of BUS and hook it into BUS->self.
  * The pci_scan_bus does not do this for the host bridge.
@@ -28,16 +34,14 @@ void __init pci_fixup_host_bridge_self(struct pci_bus *pbus)
 	prom_halt();
 }
 
-/* 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)
+/* 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)
 {
-	int node;
+	struct device_node *dp;
 
 	*nregs = 0;
 
@@ -54,24 +58,30 @@ static int __init find_device_prom_node(struct pci_pbm_info *pbm,
 	     pdev->device == PCI_DEVICE_ID_SUN_TOMATILLO ||
 	     pdev->device == PCI_DEVICE_ID_SUN_SABRE ||
 	     pdev->device == PCI_DEVICE_ID_SUN_HUMMINGBIRD))
-		return bus_prom_node;
-
-	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)
+		return bus_node;
+
+	dp = bus_node->child;
+	while (dp) {
+		struct linux_prom_pci_registers *regs;
+		struct property *prop;
+		int len;
+
+		prop = of_find_property(dp, "reg", &len);
+		if (!prop)
 			goto do_next_sibling;
-		if (((pregs[0].phys_hi >> 8) & 0xff) == pdev->devfn) {
-			*nregs = err / sizeof(*pregs);
-			return node;
+
+		regs = prop->value;
+		if (((regs[0].phys_hi >> 8) & 0xff) == pdev->devfn) {
+			*pregs = regs;
+			*nregs = len / sizeof(struct linux_prom_pci_registers);
+			return dp;
 		}
 
 	do_next_sibling:
-		node = prom_getsibling(node);
+		dp = dp->sibling;
 	}
-	return 0;
+
+	return NULL;
 }
 
 /* Older versions of OBP on PCI systems encode 64-bit MEM
@@ -128,15 +138,17 @@ static void __init fixup_obp_assignments(struct pci_dev *pdev,
  */
 static void __init pdev_cookie_fillin(struct pci_pbm_info *pbm,
 				      struct pci_dev *pdev,
-				      int bus_prom_node)
+				      struct device_node *bus_node)
 {
-	struct linux_prom_pci_registers pregs[PROMREG_MAX];
+	struct linux_prom_pci_registers *pregs = NULL;
 	struct pcidev_cookie *pcp;
-	int device_prom_node, nregs, err;
+	struct device_node *dp;
+	struct property *prop;
+	int nregs, len;
 
-	device_prom_node = find_device_prom_node(pbm, pdev, bus_prom_node,
-						 pregs, &nregs);
-	if (device_prom_node == 0) {
+	dp = find_device_prom_node(pbm, pdev, bus_node,
+				   &pregs, &nregs);
+	if (!dp) {
 		/* If it is not in the OBP device tree then
 		 * there must be a damn good reason for it.
 		 *
@@ -150,45 +162,43 @@ static void __init pdev_cookie_fillin(struct pci_pbm_info *pbm,
 		return;
 	}
 
-	pcp = kmalloc(sizeof(*pcp), GFP_ATOMIC);
+	pcp = kzalloc(sizeof(*pcp), GFP_ATOMIC);
 	if (pcp == NULL) {
 		prom_printf("PCI_COOKIE: Fatal malloc error, aborting...\n");
 		prom_halt();
 	}
 	pcp->pbm = pbm;
-	pcp->prom_node = device_prom_node;
-	memcpy(pcp->prom_regs, pregs, sizeof(pcp->prom_regs));
+	pcp->prom_node = dp;
+	memcpy(pcp->prom_regs, pregs,
+	       nregs * sizeof(struct linux_prom_pci_registers));
 	pcp->num_prom_regs = nregs;
-	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)
+
+	/* 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) {
 		pcp->num_prom_assignments = 0;
-	else
+	} else {
+		memcpy(pcp->prom_assignments, prop->value, len);
 		pcp->num_prom_assignments =
-			(err / sizeof(pcp->prom_assignments[0]));
+			(len / sizeof(pcp->prom_assignments[0]));
+	}
 
-	if (strcmp(pcp->prom_name, "ebus") == 0) {
-		struct linux_prom_ebus_ranges erng[PROM_PCIRNG_MAX];
+	if (strcmp(dp->name, "ebus") == 0) {
+		struct linux_prom_ebus_ranges *erng;
 		int iter;
 
 		/* EBUS is special... */
-		err = prom_getproperty(device_prom_node, "ranges",
-				       (char *)&erng[0], sizeof(erng));
-		if (err == 0 || err == -1) {
+		prop = of_find_property(dp, "ranges", &len);
+		if (!prop) {
 			prom_printf("EBUS: Fatal error, no range property\n");
 			prom_halt();
 		}
-		err = (err / sizeof(erng[0]));
-		for(iter = 0; iter < err; iter++) {
+		erng = prop->value;
+		len = (len / sizeof(erng[0]));
+		for (iter = 0; iter < len; iter++) {
 			struct linux_prom_ebus_ranges *ep = &erng[iter];
 			struct linux_prom_pci_registers *ap;
 
@@ -200,7 +210,7 @@ static void __init pdev_cookie_fillin(struct pci_pbm_info *pbm,
 			ap->size_hi = 0;
 			ap->size_lo = ep->size;
 		}
-		pcp->num_prom_assignments = err;
+		pcp->num_prom_assignments = len;
 	}
 
 	fixup_obp_assignments(pdev, pcp);
@@ -210,7 +220,7 @@ static void __init pdev_cookie_fillin(struct pci_pbm_info *pbm,
 
 void __init pci_fill_in_pbm_cookies(struct pci_bus *pbus,
 				    struct pci_pbm_info *pbm,
-				    int prom_node)
+				    struct device_node *dp)
 {
 	struct pci_dev *pdev, *pdev_next;
 	struct pci_bus *this_pbus, *pbus_next;
@@ -218,7 +228,7 @@ void __init pci_fill_in_pbm_cookies(struct pci_bus *pbus,
 	/* 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, prom_node);
+		pdev_cookie_fillin(pbm, pdev, dp);
 
 	list_for_each_entry_safe(this_pbus, pbus_next, &pbus->children, node) {
 		struct pcidev_cookie *pcp = this_pbus->self->sysdata;
@@ -241,7 +251,6 @@ static void __init bad_assignment(struct pci_dev *pdev,
 	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();
 }
@@ -273,8 +282,7 @@ __init get_root_resource(struct linux_prom_pci_registers *ap,
 		return &pbm->mem_space;
 
 	default:
-		printk("PCI: What is resource space %x? "
-		       "Tell davem@redhat.com about it!\n", space);
+		printk("PCI: What is resource space %x?\n", space);
 		return NULL;
 	};
 }
@@ -556,9 +564,10 @@ static inline unsigned int pci_slot_swivel(struct pci_pbm_info *pbm,
 
 	ret = ((interrupt - 1 + (PCI_SLOT(pdev->devfn) & 3)) & 3) + 1;
 
-	printk("%s: %s IRQ Swivel %s [%x:%x] -> [%x]\n",
-	       pbm->name, pci_name(toplevel_pdev), pci_name(pdev),
-	       interrupt, PCI_SLOT(pdev->devfn), ret);
+	if (pci_irq_verbose)
+		printk("%s: %s IRQ Swivel %s [%x:%x] -> [%x]\n",
+		       pbm->name, pci_name(toplevel_pdev), pci_name(pdev),
+		       interrupt, PCI_SLOT(pdev->devfn), ret);
 
 	return ret;
 }
@@ -568,58 +577,60 @@ static inline unsigned int pci_apply_intmap(struct pci_pbm_info *pbm,
 					    struct pci_dev *pbus,
 					    struct pci_dev *pdev,
 					    unsigned int interrupt,
-					    unsigned int *cnode)
+					    struct device_node **cnode)
 {
-	struct linux_prom_pci_intmap imap[PROM_PCIIMAP_MAX];
-	struct linux_prom_pci_intmask imask;
+	struct linux_prom_pci_intmap *imap;
+	struct linux_prom_pci_intmask *imask;
 	struct pcidev_cookie *pbus_pcp = pbus->sysdata;
 	struct pcidev_cookie *pdev_pcp = pdev->sysdata;
 	struct linux_prom_pci_registers *pregs = pdev_pcp->prom_regs;
+	struct property *prop;
 	int plen, num_imap, i;
 	unsigned int hi, mid, lo, irq, orig_interrupt;
 
 	*cnode = pbus_pcp->prom_node;
 
-	plen = prom_getproperty(pbus_pcp->prom_node, "interrupt-map",
-				(char *) &imap[0], sizeof(imap));
-	if (plen <= 0 ||
+	prop = of_find_property(pbus_pcp->prom_node, "interrupt-map", &plen);
+	if (!prop ||
 	    (plen % sizeof(struct linux_prom_pci_intmap)) != 0) {
 		printk("%s: Device %s interrupt-map has bad len %d\n",
 		       pbm->name, pci_name(pbus), plen);
 		goto no_intmap;
 	}
+	imap = prop->value;
 	num_imap = plen / sizeof(struct linux_prom_pci_intmap);
 
-	plen = prom_getproperty(pbus_pcp->prom_node, "interrupt-map-mask",
-				(char *) &imask, sizeof(imask));
-	if (plen <= 0 ||
+	prop = of_find_property(pbus_pcp->prom_node, "interrupt-map-mask", &plen);
+	if (!prop ||
 	    (plen % sizeof(struct linux_prom_pci_intmask)) != 0) {
 		printk("%s: Device %s interrupt-map-mask has bad len %d\n",
 		       pbm->name, pci_name(pbus), plen);
 		goto no_intmap;
 	}
+	imask = prop->value;
 
 	orig_interrupt = interrupt;
 
-	hi   = pregs->phys_hi & imask.phys_hi;
-	mid  = pregs->phys_mid & imask.phys_mid;
-	lo   = pregs->phys_lo & imask.phys_lo;
-	irq  = interrupt & imask.interrupt;
+	hi   = pregs->phys_hi & imask->phys_hi;
+	mid  = pregs->phys_mid & imask->phys_mid;
+	lo   = pregs->phys_lo & imask->phys_lo;
+	irq  = interrupt & imask->interrupt;
 
 	for (i = 0; i < num_imap; i++) {
 		if (imap[i].phys_hi  == hi   &&
 		    imap[i].phys_mid == mid  &&
 		    imap[i].phys_lo  == lo   &&
 		    imap[i].interrupt == irq) {
-			*cnode = imap[i].cnode;
+			*cnode = of_find_node_by_phandle(imap[i].cnode);
 			interrupt = imap[i].cinterrupt;
 		}
 	}
 
-	printk("%s: %s MAP BUS %s DEV %s [%x] -> [%x]\n",
-	       pbm->name, pci_name(toplevel_pdev),
-	       pci_name(pbus), pci_name(pdev),
-	       orig_interrupt, interrupt);
+	if (pci_irq_verbose)
+		printk("%s: %s MAP BUS %s DEV %s [%x] -> [%x]\n",
+		       pbm->name, pci_name(toplevel_pdev),
+		       pci_name(pbus), pci_name(pdev),
+		       orig_interrupt, interrupt);
 
 no_intmap:
 	return interrupt;
@@ -633,21 +644,22 @@ no_intmap:
  * all interrupt translations are complete, else we should use that node's
  * "reg" property to apply the PBM's "interrupt-{map,mask}" to the interrupt.
  */
-static unsigned int __init pci_intmap_match_to_root(struct pci_pbm_info *pbm,
-						    struct pci_dev *pdev,
-						    unsigned int *interrupt)
+static struct device_node * __init
+pci_intmap_match_to_root(struct pci_pbm_info *pbm,
+			 struct pci_dev *pdev,
+			 unsigned int *interrupt)
 {
 	struct pci_dev *toplevel_pdev = pdev;
 	struct pcidev_cookie *toplevel_pcp = toplevel_pdev->sysdata;
-	unsigned int cnode = toplevel_pcp->prom_node;
+	struct device_node *cnode = toplevel_pcp->prom_node;
 
 	while (pdev->bus->number != pbm->pci_first_busno) {
 		struct pci_dev *pbus = pdev->bus->self;
 		struct pcidev_cookie *pcp = pbus->sysdata;
-		int plen;
+		struct property *prop;
 
-		plen = prom_getproplen(pcp->prom_node, "interrupt-map");
-		if (plen <= 0) {
+		prop = of_find_property(pcp->prom_node, "interrupt-map", NULL);
+		if (!prop) {
 			*interrupt = pci_slot_swivel(pbm, toplevel_pdev,
 						     pdev, *interrupt);
 			cnode = pcp->prom_node;
@@ -675,26 +687,29 @@ static int __init pci_intmap_match(struct pci_dev *pdev, unsigned int *interrupt
 {
 	struct pcidev_cookie *dev_pcp = pdev->sysdata;
 	struct pci_pbm_info *pbm = dev_pcp->pbm;
-	struct linux_prom_pci_registers reg[PROMREG_MAX];
+	struct linux_prom_pci_registers *reg;
+	struct device_node *cnode;
+	struct property *prop;
 	unsigned int hi, mid, lo, irq;
-	int i, cnode, plen;
+	int i, plen;
 
 	cnode = pci_intmap_match_to_root(pbm, pdev, interrupt);
 	if (cnode == pbm->prom_node)
 		goto success;
 
-	plen = prom_getproperty(cnode, "reg", (char *) reg, sizeof(reg));
-	if (plen <= 0 ||
+	prop = of_find_property(cnode, "reg", &plen);
+	if (!prop ||
 	    (plen % sizeof(struct linux_prom_pci_registers)) != 0) {
-		printk("%s: OBP node %x reg property has bad len %d\n",
-		       pbm->name, cnode, plen);
+		printk("%s: OBP node %s reg property has bad len %d\n",
+		       pbm->name, cnode->full_name, plen);
 		goto fail;
 	}
+	reg = prop->value;
 
-	hi   = reg[0].phys_hi & pbm->pbm_intmask.phys_hi;
-	mid  = reg[0].phys_mid & pbm->pbm_intmask.phys_mid;
-	lo   = reg[0].phys_lo & pbm->pbm_intmask.phys_lo;
-	irq  = *interrupt & pbm->pbm_intmask.interrupt;
+	hi   = reg[0].phys_hi & pbm->pbm_intmask->phys_hi;
+	mid  = reg[0].phys_mid & pbm->pbm_intmask->phys_mid;
+	lo   = reg[0].phys_lo & pbm->pbm_intmask->phys_lo;
+	irq  = *interrupt & pbm->pbm_intmask->interrupt;
 
 	for (i = 0; i < pbm->num_pbm_intmap; i++) {
 		struct linux_prom_pci_intmap *intmap;
@@ -714,9 +729,11 @@ fail:
 	return 0;
 
 success:
-	printk("PCI-IRQ: Routing bus[%2x] slot[%2x] to INO[%02x]\n",
-	       pdev->bus->number, PCI_SLOT(pdev->devfn),
-	       *interrupt);
+	if (pci_irq_verbose)
+		printk("%s: Routing bus[%2x] slot[%2x] to INO[%02x]\n",
+		       pbm->name,
+		       pdev->bus->number, PCI_SLOT(pdev->devfn),
+		       *interrupt);
 	return 1;
 }
 
@@ -727,8 +744,8 @@ static void __init pdev_fixup_irq(struct pci_dev *pdev)
 	struct pci_controller_info *p = pbm->parent;
 	unsigned int portid = pbm->portid;
 	unsigned int prom_irq;
-	int prom_node = pcp->prom_node;
-	int err;
+	struct device_node *dp = pcp->prom_node;
+	struct property *prop;
 
 	/* If this is an empty EBUS device, sometimes OBP fails to
 	 * give it a valid fully specified interrupts property.
@@ -739,17 +756,17 @@ static void __init pdev_fixup_irq(struct pci_dev *pdev)
 	 */
 	if (pdev->vendor == PCI_VENDOR_ID_SUN &&
 	    pdev->device == PCI_DEVICE_ID_SUN_EBUS &&
-	    !prom_getchild(prom_node)) {
+	    !dp->child) {
 		pdev->irq = 0;
 		return;
 	}
 
-	err = prom_getproperty(prom_node, "interrupts",
-			       (char *)&prom_irq, sizeof(prom_irq));
-	if (err == 0 || err == -1) {
+	prop = of_find_property(dp, "interrupts", NULL);
+	if (!prop) {
 		pdev->irq = 0;
 		return;
 	}
+	prom_irq = *(unsigned int *) prop->value;
 
 	if (tlb_type != hypervisor) {
 		/* Fully specified already? */