Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull powerpc updates from Benjamin Herrenschmidt:
 "Here are a few more powerpc bits that I would like in 3.10.

  Mostly remaining bolts & screw tightening of power8 support such as
  actually exposing the new features via the previously added AT_HWCAP2,
  and a few fixes, some of them for problems exposed recently like
  irqdomain warnings or sysfs access permission issues, some exposed by
  power8 hardware.

  The only change outside of arch/powerpc is a small one to irqdomain.c
  to allow silent failure to fix a problem on Cell where we get a dozen
  WARN_ON's tripping at boot for what is basically a normal case."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Make hard_irq_disable() do the right thing vs. irq tracing
  powerpc/topology: Fix spurr attribute permission
  powerpc/pci: Support per-aperture memory offset
  powerpc/cell/iommu: Improve error message for missing node
  powerpc/cell/spufs: Fix status attribute permission
  irqdomain: Allow quiet failure mode
  powerpc/pnv: Fix "compatible" property for P8 PHB
  powerpc/pci: Don't add bogus empty resources to PHBs
  powerpc/powerpnv: Properly handle failure starting CPUs
  powerpc/cputable: Advertise support for ISEL/HTM/DSCR/TAR on POWER8
  powerpc/cputable: Advertise ISEL support on appropriate embedded processors
  powerpc/cputable: Advertise DSCR support on P7/P7+
  powerpc/cputable: Reserve bits in HWCAP2 for new features
  powerpc/pseries: Perform proper max_bus_speed detection
  powerpc/pseries: Force 32 bit MSIs for devices that require it
  powerpc/tm: Fix null pointer deference in flush_hash_page
  powerpc/powernv: Defer OPAL exception handler registration
  powerpc: Emulate non privileged DSCR read and write

3 files changed, 26 insertions, 14 deletions

diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index cffe7ed..028ac1f 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -178,7 +178,7 @@ static void setup_pci_atmu(struct pci_controller *hose)
 	struct ccsr_pci __iomem *pci = hose->private_data;
 	int i, j, n, mem_log, win_idx = 3, start_idx = 1, end_idx = 4;
 	u64 mem, sz, paddr_hi = 0;
-	u64 paddr_lo = ULLONG_MAX;
+	u64 offset = 0, paddr_lo = ULLONG_MAX;
 	u32 pcicsrbar = 0, pcicsrbar_sz;
 	u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL |
 			PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP;
@@ -208,8 +208,9 @@ static void setup_pci_atmu(struct pci_controller *hose)
 		paddr_lo = min(paddr_lo, (u64)hose->mem_resources[i].start);
 		paddr_hi = max(paddr_hi, (u64)hose->mem_resources[i].end);
 
-		n = setup_one_atmu(pci, j, &hose->mem_resources[i],
-				   hose->pci_mem_offset);
+		/* We assume all memory resources have the same offset */
+		offset = hose->mem_offset[i];
+		n = setup_one_atmu(pci, j, &hose->mem_resources[i], offset);
 
 		if (n < 0 || j >= 5) {
 			pr_err("Ran out of outbound PCI ATMUs for resource %d!\n", i);
@@ -239,8 +240,8 @@ static void setup_pci_atmu(struct pci_controller *hose)
 	}
 
 	/* convert to pci address space */
-	paddr_hi -= hose->pci_mem_offset;
-	paddr_lo -= hose->pci_mem_offset;
+	paddr_hi -= offset;
+	paddr_lo -= offset;
 
 	if (paddr_hi == paddr_lo) {
 		pr_err("%s: No outbound window space\n", name);
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index d30e6a6..ee21b5e 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1001,8 +1001,12 @@ static int mpic_host_map(struct irq_domain *h, unsigned int virq,
 
 	if (hw == mpic->spurious_vec)
 		return -EINVAL;
-	if (mpic->protected && test_bit(hw, mpic->protected))
-		return -EINVAL;
+	if (mpic->protected && test_bit(hw, mpic->protected)) {
+		pr_warning("mpic: Mapping of source 0x%x failed, "
+			   "source protected by firmware !\n",\
+			   (unsigned int)hw);
+		return -EPERM;
+	}
 
 #ifdef CONFIG_SMP
 	else if (hw >= mpic->ipi_vecs[0]) {
@@ -1029,8 +1033,12 @@ static int mpic_host_map(struct irq_domain *h, unsigned int virq,
 	if (mpic_map_error_int(mpic, virq, hw))
 		return 0;
 
-	if (hw >= mpic->num_sources)
+	if (hw >= mpic->num_sources) {
+		pr_warning("mpic: Mapping of source 0x%x failed, "
+			   "source out of range !\n",\
+			   (unsigned int)hw);
 		return -EINVAL;
+	}
 
 	mpic_msi_reserve_hwirq(mpic, hw);
 
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index 56e8b3c..64603a1 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -257,6 +257,7 @@ static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
 	/* Setup outbound memory windows */
 	for (i = j = 0; i < 3; i++) {
 		struct resource *res = &hose->mem_resources[i];
+		resource_size_t offset = hose->mem_offset[i];
 
 		/* we only care about memory windows */
 		if (!(res->flags & IORESOURCE_MEM))
@@ -270,7 +271,7 @@ static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
 		/* Configure the resource */
 		if (ppc4xx_setup_one_pci_PMM(hose, reg,
 					     res->start,
-					     res->start - hose->pci_mem_offset,
+					     res->start - offset,
 					     resource_size(res),
 					     res->flags,
 					     j) == 0) {
@@ -279,7 +280,7 @@ static void __init ppc4xx_configure_pci_PMMs(struct pci_controller *hose,
 			/* If the resource PCI address is 0 then we have our
 			 * ISA memory hole
 			 */
-			if (res->start == hose->pci_mem_offset)
+			if (res->start == offset)
 				found_isa_hole = 1;
 		}
 	}
@@ -457,6 +458,7 @@ static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
 	/* Setup outbound memory windows */
 	for (i = j = 0; i < 3; i++) {
 		struct resource *res = &hose->mem_resources[i];
+		resource_size_t offset = hose->mem_offset[i];
 
 		/* we only care about memory windows */
 		if (!(res->flags & IORESOURCE_MEM))
@@ -470,7 +472,7 @@ static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
 		/* Configure the resource */
 		if (ppc4xx_setup_one_pcix_POM(hose, reg,
 					      res->start,
-					      res->start - hose->pci_mem_offset,
+					      res->start - offset,
 					      resource_size(res),
 					      res->flags,
 					      j) == 0) {
@@ -479,7 +481,7 @@ static void __init ppc4xx_configure_pcix_POMs(struct pci_controller *hose,
 			/* If the resource PCI address is 0 then we have our
 			 * ISA memory hole
 			 */
-			if (res->start == hose->pci_mem_offset)
+			if (res->start == offset)
 				found_isa_hole = 1;
 		}
 	}
@@ -1792,6 +1794,7 @@ static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
 	/* Setup outbound memory windows */
 	for (i = j = 0; i < 3; i++) {
 		struct resource *res = &hose->mem_resources[i];
+		resource_size_t offset = hose->mem_offset[i];
 
 		/* we only care about memory windows */
 		if (!(res->flags & IORESOURCE_MEM))
@@ -1805,7 +1808,7 @@ static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
 		/* Configure the resource */
 		if (ppc4xx_setup_one_pciex_POM(port, hose, mbase,
 					       res->start,
-					       res->start - hose->pci_mem_offset,
+					       res->start - offset,
 					       resource_size(res),
 					       res->flags,
 					       j) == 0) {
@@ -1814,7 +1817,7 @@ static void __init ppc4xx_configure_pciex_POMs(struct ppc4xx_pciex_port *port,
 			/* If the resource PCI address is 0 then we have our
 			 * ISA memory hole
 			 */
-			if (res->start == hose->pci_mem_offset)
+			if (res->start == offset)
 				found_isa_hole = 1;
 		}
 	}