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Diffstat (limited to 'arch/sparc/kernel/pci_common.c')
-rw-r--r--arch/sparc/kernel/pci_common.c99
1 files changed, 46 insertions, 53 deletions
diff --git a/arch/sparc/kernel/pci_common.c b/arch/sparc/kernel/pci_common.c
index a6895987fb70..2576f4f31309 100644
--- a/arch/sparc/kernel/pci_common.c
+++ b/arch/sparc/kernel/pci_common.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/* pci_common.c: PCI controller common support.
*
* Copyright (C) 1999, 2007 David S. Miller (davem@davemloft.net)
@@ -5,10 +6,10 @@
#include <linux/string.h>
#include <linux/slab.h>
-#include <linux/init.h>
#include <linux/pci.h>
#include <linux/device.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <asm/prom.h>
#include <asm/oplib.h>
@@ -329,43 +330,6 @@ void pci_get_pbm_props(struct pci_pbm_info *pbm)
}
}
-static void pci_register_legacy_regions(struct resource *io_res,
- struct resource *mem_res)
-{
- struct resource *p;
-
- /* VGA Video RAM. */
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (!p)
- return;
-
- 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);
- if (!p)
- return;
-
- 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);
- if (!p)
- return;
-
- p->name = "Video ROM";
- p->start = mem_res->start + 0xc0000UL;
- p->end = p->start + 0x7fffUL;
- p->flags = IORESOURCE_BUSY;
- request_resource(mem_res, p);
-}
-
static void pci_register_iommu_region(struct pci_pbm_info *pbm)
{
const u32 *vdma = of_get_property(pbm->op->dev.of_node, "virtual-dma",
@@ -397,6 +361,8 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
int i, saw_mem, saw_io;
int num_pbm_ranges;
+ /* Corresponds to generic devm_of_pci_get_host_bridge_resources() */
+
saw_mem = saw_io = 0;
pbm_ranges = of_get_property(pbm->op->dev.of_node, "ranges", &i);
if (!pbm_ranges) {
@@ -407,16 +373,20 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
}
num_pbm_ranges = i / sizeof(*pbm_ranges);
+ memset(&pbm->mem64_space, 0, sizeof(struct resource));
for (i = 0; i < num_pbm_ranges; i++) {
const struct linux_prom_pci_ranges *pr = &pbm_ranges[i];
- unsigned long a, size;
+ unsigned long a, size, region_a;
u32 parent_phys_hi, parent_phys_lo;
+ u32 child_phys_mid, child_phys_lo;
u32 size_hi, size_lo;
int type;
parent_phys_hi = pr->parent_phys_hi;
parent_phys_lo = pr->parent_phys_lo;
+ child_phys_mid = pr->child_phys_mid;
+ child_phys_lo = pr->child_phys_lo;
if (tlb_type == hypervisor)
parent_phys_hi &= 0x0fffffff;
@@ -426,6 +396,8 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
type = (pr->child_phys_hi >> 24) & 0x3;
a = (((unsigned long)parent_phys_hi << 32UL) |
((unsigned long)parent_phys_lo << 0UL));
+ region_a = (((unsigned long)child_phys_mid << 32UL) |
+ ((unsigned long)child_phys_lo << 0UL));
size = (((unsigned long)size_hi << 32UL) |
((unsigned long)size_lo << 0UL));
@@ -440,6 +412,7 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
pbm->io_space.start = a;
pbm->io_space.end = a + size - 1UL;
pbm->io_space.flags = IORESOURCE_IO;
+ pbm->io_offset = a - region_a;
saw_io = 1;
break;
@@ -448,11 +421,18 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
pbm->mem_space.start = a;
pbm->mem_space.end = a + size - 1UL;
pbm->mem_space.flags = IORESOURCE_MEM;
+ pbm->mem_offset = a - region_a;
saw_mem = 1;
break;
case 3:
- /* XXX 64-bit MEM handling XXX */
+ /* 64-bit MEM handling */
+ pbm->mem64_space.start = a;
+ pbm->mem64_space.end = a + size - 1UL;
+ pbm->mem64_space.flags = IORESOURCE_MEM;
+ pbm->mem64_offset = a - region_a;
+ saw_mem = 1;
+ break;
default:
break;
@@ -466,18 +446,31 @@ void pci_determine_mem_io_space(struct pci_pbm_info *pbm)
prom_halt();
}
- printk("%s: PCI IO[%llx] MEM[%llx]\n",
- pbm->name,
- pbm->io_space.start,
- pbm->mem_space.start);
+ if (pbm->io_space.flags)
+ printk("%s: PCI IO %pR offset %llx\n",
+ pbm->name, &pbm->io_space, pbm->io_offset);
+ if (pbm->mem_space.flags)
+ printk("%s: PCI MEM %pR offset %llx\n",
+ pbm->name, &pbm->mem_space, pbm->mem_offset);
+ if (pbm->mem64_space.flags && pbm->mem_space.flags) {
+ if (pbm->mem64_space.start <= pbm->mem_space.end)
+ pbm->mem64_space.start = pbm->mem_space.end + 1;
+ if (pbm->mem64_space.start > pbm->mem64_space.end)
+ pbm->mem64_space.flags = 0;
+ }
+
+ if (pbm->mem64_space.flags)
+ printk("%s: PCI MEM64 %pR offset %llx\n",
+ pbm->name, &pbm->mem64_space, pbm->mem64_offset);
pbm->io_space.name = pbm->mem_space.name = pbm->name;
+ pbm->mem64_space.name = pbm->name;
request_resource(&ioport_resource, &pbm->io_space);
request_resource(&iomem_resource, &pbm->mem_space);
+ if (pbm->mem64_space.flags)
+ request_resource(&iomem_resource, &pbm->mem64_space);
- pci_register_legacy_regions(&pbm->io_space,
- &pbm->mem_space);
pci_register_iommu_region(pbm);
}
@@ -497,8 +490,8 @@ void pci_scan_for_target_abort(struct pci_pbm_info *pbm,
PCI_STATUS_REC_TARGET_ABORT));
if (error_bits) {
pci_write_config_word(pdev, PCI_STATUS, error_bits);
- printk("%s: Device %s saw Target Abort [%016x]\n",
- pbm->name, pci_name(pdev), status);
+ pci_info(pdev, "%s: Device saw Target Abort [%016x]\n",
+ pbm->name, status);
}
}
@@ -520,8 +513,8 @@ void pci_scan_for_master_abort(struct pci_pbm_info *pbm,
(status & (PCI_STATUS_REC_MASTER_ABORT));
if (error_bits) {
pci_write_config_word(pdev, PCI_STATUS, error_bits);
- printk("%s: Device %s received Master Abort [%016x]\n",
- pbm->name, pci_name(pdev), status);
+ pci_info(pdev, "%s: Device received Master Abort "
+ "[%016x]\n", pbm->name, status);
}
}
@@ -544,8 +537,8 @@ void pci_scan_for_parity_error(struct pci_pbm_info *pbm,
PCI_STATUS_DETECTED_PARITY));
if (error_bits) {
pci_write_config_word(pdev, PCI_STATUS, error_bits);
- printk("%s: Device %s saw Parity Error [%016x]\n",
- pbm->name, pci_name(pdev), status);
+ pci_info(pdev, "%s: Device saw Parity Error [%016x]\n",
+ pbm->name, status);
}
}
generated by cgit (git 2.34.1) at 2025-12-21 21:47:25 +0000