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authorPaul Mackerras <paulus@samba.org>2005-10-22 15:03:21 +1000
committerPaul Mackerras <paulus@samba.org>2005-10-22 15:03:21 +1000
commitf7abbc190b0edec34627d5348ba1d5fa5577da77 (patch)
treedc6a97aaef1cf9174af7e09329db85be0af13c16
parenta5b518ed314bfd25ea5e433ce09f8b27080023db (diff)
ppc64: Add a `primary' argument to pci_process_bridge_OF_ranges
... for consistency with ppc32 and to make the powermac merge easier. Also make it use just a single resource in the host bridge for multiple consecutive elements of the ranges property. Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/ppc64/kernel/maple_pci.c2
-rw-r--r--arch/ppc64/kernel/pci.c38
-rw-r--r--arch/ppc64/kernel/rtas_pci.c4
-rw-r--r--include/asm-ppc64/pci-bridge.h2
4 files changed, 34 insertions, 12 deletions
diff --git a/arch/ppc64/kernel/maple_pci.c b/arch/ppc64/kernel/maple_pci.c
index b901470f55c..633324b5e61 100644
--- a/arch/ppc64/kernel/maple_pci.c
+++ b/arch/ppc64/kernel/maple_pci.c
@@ -359,7 +359,7 @@ static int __init add_bridge(struct device_node *dev)
/* Interpret the "ranges" property */
/* This also maps the I/O region and sets isa_io/mem_base */
- pci_process_bridge_OF_ranges(hose, dev);
+ pci_process_bridge_OF_ranges(hose, dev, primary);
pci_setup_phb_io(hose, primary);
/* Fixup "bus-range" OF property */
diff --git a/arch/ppc64/kernel/pci.c b/arch/ppc64/kernel/pci.c
index feec06bbafc..b2fb6746f00 100644
--- a/arch/ppc64/kernel/pci.c
+++ b/arch/ppc64/kernel/pci.c
@@ -880,9 +880,9 @@ static void __devinit pci_process_ISA_OF_ranges(struct device_node *isa_node,
}
void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
- struct device_node *dev)
+ struct device_node *dev, int prim)
{
- unsigned int *ranges;
+ unsigned int *ranges, pci_space;
unsigned long size;
int rlen = 0;
int memno = 0;
@@ -905,16 +905,39 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
ranges = (unsigned int *) get_property(dev, "ranges", &rlen);
while ((rlen -= np * sizeof(unsigned int)) >= 0) {
res = NULL;
- pci_addr = (unsigned long)ranges[1] << 32 | ranges[2];
+ pci_space = ranges[0];
+ pci_addr = ((unsigned long)ranges[1] << 32) | ranges[2];
cpu_phys_addr = ranges[3];
- if (na == 2)
- cpu_phys_addr = cpu_phys_addr << 32 | ranges[4];
+ if (na >= 2)
+ cpu_phys_addr = (cpu_phys_addr << 32) | ranges[4];
- size = (unsigned long)ranges[na+3] << 32 | ranges[na+4];
+ size = ((unsigned long)ranges[na+3] << 32) | ranges[na+4];
+ ranges += np;
if (size == 0)
continue;
- switch ((ranges[0] >> 24) & 0x3) {
+
+ /* Now consume following elements while they are contiguous */
+ while (rlen >= np * sizeof(unsigned int)) {
+ unsigned long addr, phys;
+
+ if (ranges[0] != pci_space)
+ break;
+ addr = ((unsigned long)ranges[1] << 32) | ranges[2];
+ phys = ranges[3];
+ if (na >= 2)
+ phys = (phys << 32) | ranges[4];
+ if (addr != pci_addr + size ||
+ phys != cpu_phys_addr + size)
+ break;
+
+ size += ((unsigned long)ranges[na+3] << 32)
+ | ranges[na+4];
+ ranges += np;
+ rlen -= np * sizeof(unsigned int);
+ }
+
+ switch ((pci_space >> 24) & 0x3) {
case 1: /* I/O space */
hose->io_base_phys = cpu_phys_addr;
hose->pci_io_size = size;
@@ -948,7 +971,6 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
res->sibling = NULL;
res->child = NULL;
}
- ranges += np;
}
}
diff --git a/arch/ppc64/kernel/rtas_pci.c b/arch/ppc64/kernel/rtas_pci.c
index 20361bcd8cf..3ad15c90fbb 100644
--- a/arch/ppc64/kernel/rtas_pci.c
+++ b/arch/ppc64/kernel/rtas_pci.c
@@ -400,7 +400,7 @@ unsigned long __init find_and_init_phbs(void)
if (!phb)
continue;
- pci_process_bridge_OF_ranges(phb, node);
+ pci_process_bridge_OF_ranges(phb, node, 0);
pci_setup_phb_io(phb, index == 0);
#ifdef CONFIG_PPC_PSERIES
if (ppc64_interrupt_controller == IC_OPEN_PIC && pSeries_mpic) {
@@ -450,7 +450,7 @@ struct pci_controller * __devinit init_phb_dynamic(struct device_node *dn)
if (!phb)
return NULL;
- pci_process_bridge_OF_ranges(phb, dn);
+ pci_process_bridge_OF_ranges(phb, dn, primary);
pci_setup_phb_io_dynamic(phb, primary);
of_node_put(root);
diff --git a/include/asm-ppc64/pci-bridge.h b/include/asm-ppc64/pci-bridge.h
index 7d8ecb507a3..60cf8c838af 100644
--- a/include/asm-ppc64/pci-bridge.h
+++ b/include/asm-ppc64/pci-bridge.h
@@ -123,7 +123,7 @@ static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
}
extern void pci_process_bridge_OF_ranges(struct pci_controller *hose,
- struct device_node *dev);
+ struct device_node *dev, int primary);
extern int pcibios_remove_root_bus(struct pci_controller *phb);