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-rw-r--r--arch/powerpc/platforms/powermac/cpufreq_32.c8
-rw-r--r--arch/powerpc/platforms/powermac/low_i2c.c7
-rw-r--r--arch/powerpc/platforms/powermac/pci.c61
-rw-r--r--arch/powerpc/platforms/powermac/smp.c2
-rw-r--r--arch/powerpc/platforms/pseries/msi.c2
-rw-r--r--arch/powerpc/platforms/pseries/reconfig.c9
-rw-r--r--arch/powerpc/platforms/pseries/setup.c4
-rw-r--r--arch/powerpc/platforms/pseries/xics.c9
8 files changed, 84 insertions, 18 deletions
diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c
index 65c585b8b00d..08d94e4cedd3 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_32.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_32.c
@@ -44,14 +44,6 @@
*/
#undef DEBUG_FREQ
-/*
- * There is a problem with the core cpufreq code on SMP kernels,
- * it won't recalculate the Bogomips properly
- */
-#ifdef CONFIG_SMP
-#warning "WARNING, CPUFREQ not recommended on SMP kernels"
-#endif
-
extern void low_choose_7447a_dfs(int dfs);
extern void low_choose_750fx_pll(int pll);
extern void low_sleep_handler(void);
diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c
index 21226b74c9b2..414ca9849f23 100644
--- a/arch/powerpc/platforms/powermac/low_i2c.c
+++ b/arch/powerpc/platforms/powermac/low_i2c.c
@@ -540,8 +540,11 @@ static struct pmac_i2c_host_kw *__init kw_i2c_host_init(struct device_node *np)
/* Make sure IRQ is disabled */
kw_write_reg(reg_ier, 0);
- /* Request chip interrupt */
- if (request_irq(host->irq, kw_i2c_irq, 0, "keywest i2c", host))
+ /* Request chip interrupt. We set IRQF_TIMER because we don't
+ * want that interrupt disabled between the 2 passes of driver
+ * suspend or we'll have issues running the pfuncs
+ */
+ if (request_irq(host->irq, kw_i2c_irq, IRQF_TIMER, "keywest i2c", host))
host->irq = NO_IRQ;
printk(KERN_INFO "KeyWest i2c @0x%08x irq %d %s\n",
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 04cdd32624d4..e81403b245b5 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -1286,3 +1286,64 @@ static void fixup_k2_sata(struct pci_dev* dev)
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, 0x0240, fixup_k2_sata);
+/*
+ * On U4 (aka CPC945) the PCIe root complex "P2P" bridge resource ranges aren't
+ * configured by the firmware. The bridge itself seems to ignore them but it
+ * causes problems with Linux which then re-assigns devices below the bridge,
+ * thus changing addresses of those devices from what was in the device-tree,
+ * which sucks when those are video cards using offb
+ *
+ * We could just mark it transparent but I prefer fixing up the resources to
+ * properly show what's going on here, as I have some doubts about having them
+ * badly configured potentially being an issue for DMA.
+ *
+ * We leave PIO alone, it seems to be fine
+ *
+ * Oh and there's another funny bug. The OF properties advertize the region
+ * 0xf1000000..0xf1ffffff as being forwarded as memory space. But that's
+ * actually not true, this region is the memory mapped config space. So we
+ * also need to filter it out or we'll map things in the wrong place.
+ */
+static void fixup_u4_pcie(struct pci_dev* dev)
+{
+ struct pci_controller *host = pci_bus_to_host(dev->bus);
+ struct resource *region = NULL;
+ u32 reg;
+ int i;
+
+ /* Only do that on PowerMac */
+ if (!machine_is(powermac))
+ return;
+
+ /* Find the largest MMIO region */
+ for (i = 0; i < 3; i++) {
+ struct resource *r = &host->mem_resources[i];
+ if (!(r->flags & IORESOURCE_MEM))
+ continue;
+ /* Skip the 0xf0xxxxxx..f2xxxxxx regions, we know they
+ * are reserved by HW for other things
+ */
+ if (r->start >= 0xf0000000 && r->start < 0xf3000000)
+ continue;
+ if (!region || (r->end - r->start) >
+ (region->end - region->start))
+ region = r;
+ }
+ /* Nothing found, bail */
+ if (region == 0)
+ return;
+
+ /* Print things out */
+ printk(KERN_INFO "PCI: Fixup U4 PCIe bridge range: %pR\n", region);
+
+ /* Fixup bridge config space. We know it's a Mac, resource aren't
+ * offset so let's just blast them as-is. We also know that they
+ * fit in 32 bits
+ */
+ reg = ((region->start >> 16) & 0xfff0) | (region->end & 0xfff00000);
+ pci_write_config_dword(dev, PCI_MEMORY_BASE, reg);
+ pci_write_config_dword(dev, PCI_PREF_BASE_UPPER32, 0);
+ pci_write_config_dword(dev, PCI_PREF_LIMIT_UPPER32, 0);
+ pci_write_config_dword(dev, PCI_PREF_MEMORY_BASE, 0);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_U4_PCIE, fixup_u4_pcie);
diff --git a/arch/powerpc/platforms/powermac/smp.c b/arch/powerpc/platforms/powermac/smp.c
index 6d4da7b46b41..937a38e73178 100644
--- a/arch/powerpc/platforms/powermac/smp.c
+++ b/arch/powerpc/platforms/powermac/smp.c
@@ -408,7 +408,7 @@ static void __init smp_psurge_setup_cpu(int cpu_nr)
/* reset the entry point so if we get another intr we won't
* try to startup again */
out_be32(psurge_start, 0x100);
- if (setup_irq(30, &psurge_irqaction))
+ if (setup_irq(irq_create_mapping(NULL, 30), &psurge_irqaction))
printk(KERN_ERR "Couldn't get primary IPI interrupt");
}
diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index bf2e1ac41308..1164c3430f2c 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -432,8 +432,6 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
/* Read config space back so we can restore after reset */
read_msi_msg(virq, &msg);
entry->msg = msg;
-
- unmask_msi_irq(virq);
}
return 0;
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index b6f1b137d427..2e2bbe120b90 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -20,6 +20,7 @@
#include <asm/machdep.h>
#include <asm/uaccess.h>
#include <asm/pSeries_reconfig.h>
+#include <asm/mmu.h>
@@ -439,9 +440,15 @@ static int do_update_property(char *buf, size_t bufsize)
if (!newprop)
return -ENOMEM;
+ if (!strcmp(name, "slb-size") || !strcmp(name, "ibm,slb-size"))
+ slb_set_size(*(int *)value);
+
oldprop = of_find_property(np, name,NULL);
- if (!oldprop)
+ if (!oldprop) {
+ if (strlen(name))
+ return prom_add_property(np, newprop);
return -ENODEV;
+ }
rc = prom_update_property(np, newprop, oldprop);
if (rc)
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 8d75ea21296f..ca5f2e10972c 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -223,10 +223,6 @@ static void pseries_lpar_enable_pmcs(void)
set = 1UL << 63;
reset = 0;
plpar_hcall_norets(H_PERFMON, set, reset);
-
- /* instruct hypervisor to maintain PMCs */
- if (firmware_has_feature(FW_FEATURE_SPLPAR))
- get_lppaca()->pmcregs_in_use = 1;
}
static void __init pseries_discover_pic(void)
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 419f8a637ffe..b9bf0eedccf2 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -18,6 +18,7 @@
#include <linux/init.h>
#include <linux/radix-tree.h>
#include <linux/cpu.h>
+#include <linux/msi.h>
#include <linux/of.h>
#include <asm/firmware.h>
@@ -219,6 +220,14 @@ static void xics_unmask_irq(unsigned int virq)
static unsigned int xics_startup(unsigned int virq)
{
+ /*
+ * The generic MSI code returns with the interrupt disabled on the
+ * card, using the MSI mask bits. Firmware doesn't appear to unmask
+ * at that level, so we do it here by hand.
+ */
+ if (irq_to_desc(virq)->msi_desc)
+ unmask_msi_irq(virq);
+
/* unmask it */
xics_unmask_irq(virq);
return 0;