[SPARC64]: Consolidate PCI mem/io resource determination.

It can be done for every PCI configuration using OF properties.

Signed-off-by: David S. Miller <davem@davemloft.net>

6 files changed, 103 insertions, 218 deletions

diff --git a/arch/sparc64/kernel/pci_common.c b/arch/sparc64/kernel/pci_common.c
index 0d3c95d..4945d70 100644
--- a/arch/sparc64/kernel/pci_common.c
+++ b/arch/sparc64/kernel/pci_common.c
@@ -1,7 +1,6 @@
-/* $Id: pci_common.c,v 1.29 2002/02/01 00:56:03 davem Exp $
- * pci_common.c: PCI controller common support.
+/* pci_common.c: PCI controller common support.
  *
- * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #include <linux/string.h>
@@ -16,8 +15,8 @@
 
 #include "pci_impl.h"
 
-void pci_register_legacy_regions(struct resource *io_res,
-				 struct resource *mem_res)
+static void pci_register_legacy_regions(struct resource *io_res,
+					struct resource *mem_res)
 {
 	struct resource *p;
 
@@ -53,6 +52,91 @@ void pci_register_legacy_regions(struct resource *io_res,
 	request_resource(mem_res, p);
 }
 
+static void pci_register_iommu_region(struct pci_pbm_info *pbm)
+{
+	u32 *vdma = of_get_property(pbm->prom_node, "virtual-dma", NULL);
+
+	if (vdma) {
+		struct resource *rp = kmalloc(sizeof(*rp), GFP_KERNEL);
+
+		if (!rp) {
+			prom_printf("Cannot allocate IOMMU resource.\n");
+			prom_halt();
+		}
+		rp->name = "IOMMU";
+		rp->start = pbm->mem_space.start + (unsigned long) vdma[0];
+		rp->end = rp->start + (unsigned long) vdma[1] - 1UL;
+		rp->flags = IORESOURCE_BUSY;
+		request_resource(&pbm->mem_space, rp);
+	}
+}
+
+void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
+{
+	int i, saw_mem, saw_io;
+
+	saw_mem = saw_io = 0;
+	for (i = 0; i < pbm->num_pbm_ranges; i++) {
+		struct linux_prom_pci_ranges *pr = &pbm->pbm_ranges[i];
+		unsigned long a;
+		int type;
+
+		type = (pr->child_phys_hi >> 24) & 0x3;
+		a = (((unsigned long)pr->parent_phys_hi << 32UL) |
+		     ((unsigned long)pr->parent_phys_lo  <<  0UL));
+
+		switch (type) {
+		case 0:
+			/* PCI config space, 16MB */
+			pbm->config_space = a;
+			break;
+
+		case 1:
+			/* 16-bit IO space, 16MB */
+			pbm->io_space.start = a;
+			pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL);
+			pbm->io_space.flags = IORESOURCE_IO;
+			saw_io = 1;
+			break;
+
+		case 2:
+			/* 32-bit MEM space, 2GB */
+			pbm->mem_space.start = a;
+			pbm->mem_space.end = a + (0x80000000UL - 1UL);
+			pbm->mem_space.flags = IORESOURCE_MEM;
+			saw_mem = 1;
+			break;
+
+		case 3:
+			/* XXX 64-bit MEM handling XXX */
+
+		default:
+			break;
+		};
+	}
+
+	if (!saw_io || !saw_mem) {
+		prom_printf("%s: Fatal error, missing %s PBM range.\n",
+			    pbm->name,
+			    (!saw_io ? "IO" : "MEM"));
+		prom_halt();
+	}
+
+	printk("%s: PCI IO[%lx] MEM[%lx]\n",
+	       pbm->name,
+	       pbm->io_space.start,
+	       pbm->mem_space.start);
+
+	pbm->io_space.name = pbm->mem_space.name = pbm->name;
+
+	request_resource(&ioport_resource, &pbm->io_space);
+	request_resource(&iomem_resource, &pbm->mem_space);
+
+	pci_register_legacy_regions(&pbm->io_space,
+				    &pbm->mem_space);
+	pci_register_iommu_region(pbm);
+}
+
 /* Generic helper routines for PCI error reporting. */
 void pci_scan_for_target_abort(struct pci_controller_info *p,
 			       struct pci_pbm_info *pbm,
diff --git a/arch/sparc64/kernel/pci_impl.h b/arch/sparc64/kernel/pci_impl.h
index c4ba702..c671454 100644
--- a/arch/sparc64/kernel/pci_impl.h
+++ b/arch/sparc64/kernel/pci_impl.h
@@ -1,7 +1,6 @@
-/* $Id: pci_impl.h,v 1.9 2001/06/13 06:34:30 davem Exp $
- * pci_impl.h: Helper definitions for PCI controller support.
+/* pci_impl.h: Helper definitions for PCI controller support.
  *
- * Copyright (C) 1999 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #ifndef PCI_IMPL_H
@@ -19,8 +18,7 @@ extern int pci_num_controllers;
 
 /* PCI bus scanning and fixup support. */
 extern struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm);
-extern void pci_register_legacy_regions(struct resource *io_res,
-					struct resource *mem_res);
+extern void pci_determine_mem_io_space(struct pci_pbm_info *pbm);
 
 /* Error reporting support. */
 extern void pci_scan_for_target_abort(struct pci_controller_info *, struct pci_pbm_info *, struct pci_bus *);
diff --git a/arch/sparc64/kernel/pci_psycho.c b/arch/sparc64/kernel/pci_psycho.c
index 12ea30d..c08681b 100644
--- a/arch/sparc64/kernel/pci_psycho.c
+++ b/arch/sparc64/kernel/pci_psycho.c
@@ -1,7 +1,6 @@
-/* $Id: pci_psycho.c,v 1.33 2002/02/01 00:58:33 davem Exp $
- * pci_psycho.c: PSYCHO/U2P specific PCI controller support.
+/* pci_psycho.c: PSYCHO/U2P specific PCI controller support.
  *
- * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@caipfs.rutgers.edu)
+ * Copyright (C) 1997, 1998, 1999, 2007 David S. Miller (davem@davemloft.net)
  * Copyright (C) 1998, 1999 Eddie C. Dost   (ecd@skynet.be)
  * Copyright (C) 1999 Jakub Jelinek   (jakub@redhat.com)
  */
@@ -1072,19 +1071,6 @@ static void psycho_controller_hwinit(struct pci_controller_info *p)
 	psycho_write(p->pbm_A.controller_regs + PSYCHO_PCIB_DIAG, tmp);
 }
 
-static void pbm_register_toplevel_resources(struct pci_controller_info *p,
-					    struct pci_pbm_info *pbm)
-{
-	char *name = pbm->name;
-
-	pbm->io_space.name = pbm->mem_space.name = name;
-
-	request_resource(&ioport_resource, &pbm->io_space);
-	request_resource(&iomem_resource, &pbm->mem_space);
-	pci_register_legacy_regions(&pbm->io_space,
-				    &pbm->mem_space);
-}
-
 static void psycho_pbm_strbuf_init(struct pci_controller_info *p,
 				   struct pci_pbm_info *pbm,
 				   int is_pbm_a)
@@ -1155,13 +1141,9 @@ static void psycho_pbm_init(struct pci_controller_info *p,
 	if (is_pbm_a) {
 		pbm = &p->pbm_A;
 		pbm->pci_first_slot = 1;
-		pbm->io_space.start = pbm->controller_regs + PSYCHO_IOSPACE_A;
-		pbm->mem_space.start = pbm->controller_regs + PSYCHO_MEMSPACE_A;
 	} else {
 		pbm = &p->pbm_B;
 		pbm->pci_first_slot = 2;
-		pbm->io_space.start = pbm->controller_regs + PSYCHO_IOSPACE_B;
-		pbm->mem_space.start = pbm->controller_regs + PSYCHO_MEMSPACE_B;
 	}
 
 	pbm->chip_type = PBM_CHIP_TYPE_PSYCHO;
@@ -1174,17 +1156,12 @@ static void psycho_pbm_init(struct pci_controller_info *p,
 	if (prop)
 		pbm->chip_revision = *(int *) prop->value;
 
-	pbm->io_space.end = pbm->io_space.start + PSYCHO_IOSPACE_SIZE;
-	pbm->io_space.flags = IORESOURCE_IO;
-	pbm->mem_space.end = pbm->mem_space.start + PSYCHO_MEMSPACE_SIZE;
-	pbm->mem_space.flags = IORESOURCE_MEM;
+	pci_determine_mem_io_space(pbm);
 
 	pbm->parent = p;
 	pbm->prom_node = dp;
 	pbm->name = dp->full_name;
 
-	pbm_register_toplevel_resources(p, pbm);
-
 	printk("%s: PSYCHO PCI Bus Module ver[%x:%x]\n",
 	       pbm->name,
 	       pbm->chip_version, pbm->chip_revision);
diff --git a/arch/sparc64/kernel/pci_sabre.c b/arch/sparc64/kernel/pci_sabre.c
index f4e3460..2dad171 100644
--- a/arch/sparc64/kernel/pci_sabre.c
+++ b/arch/sparc64/kernel/pci_sabre.c
@@ -1045,10 +1045,9 @@ static void sabre_iommu_init(struct pci_controller_info *p,
 	sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL, control);
 }
 
-static void sabre_pbm_init(struct pci_controller_info *p, struct device_node *dp, u32 dma_start, u32 dma_end)
+static void sabre_pbm_init(struct pci_controller_info *p, struct device_node *dp)
 {
 	struct pci_pbm_info *pbm;
-	struct resource *rp;
 
 	pbm = &p->pbm_A;
 	pbm->name = dp->full_name;
@@ -1061,38 +1060,7 @@ static void sabre_pbm_init(struct pci_controller_info *p, struct device_node *dp
 	pbm->pci_first_busno = p->pci_first_busno;
 	pbm->pci_last_busno = p->pci_last_busno;
 
-	pbm->io_space.name = pbm->mem_space.name = pbm->name;
-
-	pbm->io_space.start = p->pbm_A.controller_regs + SABRE_IOSPACE;
-	pbm->io_space.end   = pbm->io_space.start + (1UL << 24) - 1UL;
-	pbm->io_space.flags = IORESOURCE_IO;
-
-	pbm->mem_space.start = (p->pbm_A.controller_regs + SABRE_MEMSPACE);
-	pbm->mem_space.end = (pbm->mem_space.start + ((1UL << 32UL) - 1UL));
-	pbm->mem_space.flags = IORESOURCE_MEM;
-
-	if (request_resource(&ioport_resource, &pbm->io_space) < 0) {
-		prom_printf("Cannot register Sabre's IO space.\n");
-		prom_halt();
-	}
-	if (request_resource(&iomem_resource, &pbm->mem_space) < 0) {
-		prom_printf("Cannot register Sabre's MEM space.\n");
-		prom_halt();
-	}
-
-	rp = kmalloc(sizeof(*rp), GFP_KERNEL);
-	if (!rp) {
-		prom_printf("Cannot allocate IOMMU resource.\n");
-		prom_halt();
-	}
-	rp->name = "IOMMU";
-	rp->start = pbm->mem_space.start + (unsigned long) dma_start;
-	rp->end = pbm->mem_space.start + (unsigned long) dma_end - 1UL;
-	rp->flags = IORESOURCE_BUSY;
-	request_resource(&pbm->mem_space, rp);
-
-	pci_register_legacy_regions(&pbm->io_space,
-				    &pbm->mem_space);
+	pci_determine_mem_io_space(pbm);
 }
 
 void sabre_init(struct device_node *dp, char *model_name)
@@ -1212,5 +1180,5 @@ void sabre_init(struct device_node *dp, char *model_name)
 	/*
 	 * Look for APB underneath.
 	 */
-	sabre_pbm_init(p, dp, vdma[0], vdma[0] + vdma[1]);
+	sabre_pbm_init(p, dp);
 }
diff --git a/arch/sparc64/kernel/pci_schizo.c b/arch/sparc64/kernel/pci_schizo.c
index 332cfd9..79ad268 100644
--- a/arch/sparc64/kernel/pci_schizo.c
+++ b/arch/sparc64/kernel/pci_schizo.c
@@ -1,7 +1,6 @@
-/* $Id: pci_schizo.c,v 1.24 2002/01/23 11:27:32 davem Exp $
- * pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
+/* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
  *
- * Copyright (C) 2001, 2002, 2003 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2001, 2002, 2003, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #include <linux/kernel.h>
@@ -1304,79 +1303,6 @@ static void schizo_resource_adjust(struct pci_dev *pdev,
 	res->end += root->start;
 }
 
-/* Use ranges property to determine where PCI MEM, I/O, and Config
- * space are for this PCI bus module.
- */
-static void schizo_determine_mem_io_space(struct pci_pbm_info *pbm)
-{
-	int i, saw_cfg, saw_mem, saw_io;
-
-	saw_cfg = saw_mem = saw_io = 0;
-	for (i = 0; i < pbm->num_pbm_ranges; i++) {
-		struct linux_prom_pci_ranges *pr = &pbm->pbm_ranges[i];
-		unsigned long a;
-		int type;
-
-		type = (pr->child_phys_hi >> 24) & 0x3;
-		a = (((unsigned long)pr->parent_phys_hi << 32UL) |
-		     ((unsigned long)pr->parent_phys_lo  <<  0UL));
-
-		switch (type) {
-		case 0:
-			/* PCI config space, 16MB */
-			pbm->config_space = a;
-			saw_cfg = 1;
-			break;
-
-		case 1:
-			/* 16-bit IO space, 16MB */
-			pbm->io_space.start = a;
-			pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL);
-			pbm->io_space.flags = IORESOURCE_IO;
-			saw_io = 1;
-			break;
-
-		case 2:
-			/* 32-bit MEM space, 2GB */
-			pbm->mem_space.start = a;
-			pbm->mem_space.end = a + (0x80000000UL - 1UL);
-			pbm->mem_space.flags = IORESOURCE_MEM;
-			saw_mem = 1;
-			break;
-
-		default:
-			break;
-		};
-	}
-
-	if (!saw_cfg || !saw_io || !saw_mem) {
-		prom_printf("%s: Fatal error, missing %s PBM range.\n",
-			    pbm->name,
-			    ((!saw_cfg ?
-			      "CFG" :
-			      (!saw_io ?
-			       "IO" : "MEM"))));
-		prom_halt();
-	}
-
-	printk("%s: PCI CFG[%lx] IO[%lx] MEM[%lx]\n",
-	       pbm->name,
-	       pbm->config_space,
-	       pbm->io_space.start,
-	       pbm->mem_space.start);
-}
-
-static void pbm_register_toplevel_resources(struct pci_controller_info *p,
-					    struct pci_pbm_info *pbm)
-{
-	pbm->io_space.name = pbm->mem_space.name = pbm->name;
-
-	request_resource(&ioport_resource, &pbm->io_space);
-	request_resource(&iomem_resource, &pbm->mem_space);
-	pci_register_legacy_regions(&pbm->io_space,
-				    &pbm->mem_space);
-}
-
 #define SCHIZO_STRBUF_CONTROL		(0x02800UL)
 #define SCHIZO_STRBUF_FLUSH		(0x02808UL)
 #define SCHIZO_STRBUF_FSYNC		(0x02810UL)
@@ -1679,8 +1605,7 @@ static void schizo_pbm_init(struct pci_controller_info *p,
 	pbm->num_pbm_ranges =
 		(len / sizeof(struct linux_prom_pci_ranges));
 
-	schizo_determine_mem_io_space(pbm);
-	pbm_register_toplevel_resources(p, pbm);
+	pci_determine_mem_io_space(pbm);
 
 	pbm->pbm_intmap = of_get_property(dp, "interrupt-map", &len);
 	if (pbm->pbm_intmap) {
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index eec7def..e1af009 100644
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -1,6 +1,6 @@
 /* pci_sun4v.c: SUN4V specific PCI controller support.
  *
- * Copyright (C) 2006 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net)
  */
 
 #include <linux/kernel.h>
@@ -751,72 +751,6 @@ static void pci_sun4v_resource_adjust(struct pci_dev *pdev,
 	res->end += root->start;
 }
 
-/* Use ranges property to determine where PCI MEM, I/O, and Config
- * space are for this PCI bus module.
- */
-static void pci_sun4v_determine_mem_io_space(struct pci_pbm_info *pbm)
-{
-	int i, saw_mem, saw_io;
-
-	saw_mem = saw_io = 0;
-	for (i = 0; i < pbm->num_pbm_ranges; i++) {
-		struct linux_prom_pci_ranges *pr = &pbm->pbm_ranges[i];
-		unsigned long a;
-		int type;
-
-		type = (pr->child_phys_hi >> 24) & 0x3;
-		a = (((unsigned long)pr->parent_phys_hi << 32UL) |
-		     ((unsigned long)pr->parent_phys_lo  <<  0UL));
-
-		switch (type) {
-		case 1:
-			/* 16-bit IO space, 16MB */
-			pbm->io_space.start = a;
-			pbm->io_space.end = a + ((16UL*1024UL*1024UL) - 1UL);
-			pbm->io_space.flags = IORESOURCE_IO;
-			saw_io = 1;
-			break;
-
-		case 2:
-			/* 32-bit MEM space, 2GB */
-			pbm->mem_space.start = a;
-			pbm->mem_space.end = a + (0x80000000UL - 1UL);
-			pbm->mem_space.flags = IORESOURCE_MEM;
-			saw_mem = 1;
-			break;
-
-		case 3:
-			/* XXX 64-bit MEM handling XXX */
-
-		default:
-			break;
-		};
-	}
-
-	if (!saw_io || !saw_mem) {
-		prom_printf("%s: Fatal error, missing %s PBM range.\n",
-			    pbm->name,
-			    (!saw_io ? "IO" : "MEM"));
-		prom_halt();
-	}
-
-	printk("%s: PCI IO[%lx] MEM[%lx]\n",
-	       pbm->name,
-	       pbm->io_space.start,
-	       pbm->mem_space.start);
-}
-
-static void pbm_register_toplevel_resources(struct pci_controller_info *p,
-					    struct pci_pbm_info *pbm)
-{
-	pbm->io_space.name = pbm->mem_space.name = pbm->name;
-
-	request_resource(&ioport_resource, &pbm->io_space);
-	request_resource(&iomem_resource, &pbm->mem_space);
-	pci_register_legacy_regions(&pbm->io_space,
-				    &pbm->mem_space);
-}
-
 static unsigned long probe_existing_entries(struct pci_pbm_info *pbm,
 					    struct pci_iommu *iommu)
 {
@@ -1396,8 +1330,7 @@ static void pci_sun4v_pbm_init(struct pci_controller_info *p, struct device_node
 	for (i = 0; i < pbm->num_pbm_ranges; i++)
 		pbm->pbm_ranges[i].parent_phys_hi &= 0x0fffffff;
 
-	pci_sun4v_determine_mem_io_space(pbm);
-	pbm_register_toplevel_resources(p, pbm);
+	pci_determine_mem_io_space(pbm);
 
 	prop = of_find_property(dp, "interrupt-map", &len);
 	pbm->pbm_intmap = prop->value;