Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
  [POWERPC] Further fixes for the removal of 4level-fixup hack from ppc32
  [POWERPC] EEH: log all PCI-X and PCI-E AER registers
  [POWERPC] EEH: capture and log pci state on error
  [POWERPC] EEH: Split up long error msg
  [POWERPC] EEH: log error only after driver notification.
  [POWERPC] fsl_soc: Make mac_addr const in fs_enet_of_init().
  [POWERPC] Don't use SLAB/SLUB for PTE pages
  [POWERPC] Spufs support for 64K LS mappings on 4K kernels
  [POWERPC] Add ability to 4K kernel to hash in 64K pages
  [POWERPC] Introduce address space "slices"
  [POWERPC] Small fixes & cleanups in segment page size demotion
  [POWERPC] iSeries: Make HVC_ISERIES the default
  [POWERPC] iSeries: suppress build warning in lparmap.c
  [POWERPC] Mark pages that don't exist as nosave
  [POWERPC] swsusp: Introduce register_nosave_region_late

11 files changed, 377 insertions, 49 deletions

diff --git a/arch/powerpc/platforms/86xx/mpc86xx_smp.c b/arch/powerpc/platforms/86xx/mpc86xx_smp.c
index 7ef0c68..ba55b0f 100644
--- a/arch/powerpc/platforms/86xx/mpc86xx_smp.c
+++ b/arch/powerpc/platforms/86xx/mpc86xx_smp.c
@@ -15,8 +15,8 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 
-#include <asm/pgtable.h>
 #include <asm/page.h>
+#include <asm/pgtable.h>
 #include <asm/pci-bridge.h>
 #include <asm-powerpc/mpic.h>
 #include <asm/mpc86xx.h>
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 8255177..9b2b386 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -35,6 +35,21 @@ config SPU_FS
 	  Units on machines implementing the Broadband Processor
 	  Architecture.
 
+config SPU_FS_64K_LS
+	bool "Use 64K pages to map SPE local  store"
+	# we depend on PPC_MM_SLICES for now rather than selecting
+	# it because we depend on hugetlbfs hooks being present. We
+	# will fix that when the generic code has been improved to
+	# not require hijacking hugetlbfs hooks.
+	depends on SPU_FS && PPC_MM_SLICES && !PPC_64K_PAGES
+	default y
+	select PPC_HAS_HASH_64K
+	help
+	  This option causes SPE local stores to be mapped in process
+	  address spaces using 64K pages while the rest of the kernel
+	  uses 4K pages. This can improve performances of applications
+	  using multiple SPEs by lowering the TLB pressure on them.
+
 config SPU_BASE
 	bool
 	default n
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index fec5152..a7f5a76 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -144,12 +144,11 @@ static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
 
 	switch(REGION_ID(ea)) {
 	case USER_REGION_ID:
-#ifdef CONFIG_HUGETLB_PAGE
-		if (in_hugepage_area(mm->context, ea))
-			psize = mmu_huge_psize;
-		else
+#ifdef CONFIG_PPC_MM_SLICES
+		psize = get_slice_psize(mm, ea);
+#else
+		psize = mm->context.user_psize;
 #endif
-			psize = mm->context.user_psize;
 		vsid = (get_vsid(mm->context.id, ea) << SLB_VSID_SHIFT) |
 				SLB_VSID_USER;
 		break;
diff --git a/arch/powerpc/platforms/cell/spufs/Makefile b/arch/powerpc/platforms/cell/spufs/Makefile
index 2cd89c1..328afcf 100644
--- a/arch/powerpc/platforms/cell/spufs/Makefile
+++ b/arch/powerpc/platforms/cell/spufs/Makefile
@@ -1,4 +1,4 @@
-obj-y += switch.o fault.o
+obj-y += switch.o fault.o lscsa_alloc.o
 
 obj-$(CONFIG_SPU_FS) += spufs.o
 spufs-y += inode.o file.o context.o syscalls.o coredump.o
diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index a87d9ca..8654749 100644
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -36,10 +36,8 @@ struct spu_context *alloc_spu_context(struct spu_gang *gang)
 	/* Binding to physical processor deferred
 	 * until spu_activate().
 	 */
-	spu_init_csa(&ctx->csa);
-	if (!ctx->csa.lscsa) {
+	if (spu_init_csa(&ctx->csa))
 		goto out_free;
-	}
 	spin_lock_init(&ctx->mmio_lock);
 	spin_lock_init(&ctx->mapping_lock);
 	kref_init(&ctx->kref);
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index d010b24..45614c7 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -118,14 +118,32 @@ spufs_mem_write(struct file *file, const char __user *buffer,
 static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma,
 					  unsigned long address)
 {
-	struct spu_context *ctx = vma->vm_file->private_data;
-	unsigned long pfn, offset = address - vma->vm_start;
-
-	offset += vma->vm_pgoff << PAGE_SHIFT;
+	struct spu_context *ctx	= vma->vm_file->private_data;
+	unsigned long pfn, offset, addr0 = address;
+#ifdef CONFIG_SPU_FS_64K_LS
+	struct spu_state *csa = &ctx->csa;
+	int psize;
+
+	/* Check what page size we are using */
+	psize = get_slice_psize(vma->vm_mm, address);
+
+	/* Some sanity checking */
+	BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K));
+
+	/* Wow, 64K, cool, we need to align the address though */
+	if (csa->use_big_pages) {
+		BUG_ON(vma->vm_start & 0xffff);
+		address &= ~0xfffful;
+	}
+#endif /* CONFIG_SPU_FS_64K_LS */
 
+	offset = (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT);
 	if (offset >= LS_SIZE)
 		return NOPFN_SIGBUS;
 
+	pr_debug("spufs_mem_mmap_nopfn address=0x%lx -> 0x%lx, offset=0x%lx\n",
+		 addr0, address, offset);
+
 	spu_acquire(ctx);
 
 	if (ctx->state == SPU_STATE_SAVED) {
@@ -149,9 +167,24 @@ static struct vm_operations_struct spufs_mem_mmap_vmops = {
 	.nopfn = spufs_mem_mmap_nopfn,
 };
 
-static int
-spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
-{
+static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
+{
+#ifdef CONFIG_SPU_FS_64K_LS
+	struct spu_context	*ctx = file->private_data;
+	struct spu_state	*csa = &ctx->csa;
+
+	/* Sanity check VMA alignment */
+	if (csa->use_big_pages) {
+		pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx,"
+			 " pgoff=0x%lx\n", vma->vm_start, vma->vm_end,
+			 vma->vm_pgoff);
+		if (vma->vm_start & 0xffff)
+			return -EINVAL;
+		if (vma->vm_pgoff & 0xf)
+			return -EINVAL;
+	}
+#endif /* CONFIG_SPU_FS_64K_LS */
+
 	if (!(vma->vm_flags & VM_SHARED))
 		return -EINVAL;
 
@@ -163,13 +196,34 @@ spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
 	return 0;
 }
 
+#ifdef CONFIG_SPU_FS_64K_LS
+unsigned long spufs_get_unmapped_area(struct file *file, unsigned long addr,
+				      unsigned long len, unsigned long pgoff,
+				      unsigned long flags)
+{
+	struct spu_context	*ctx = file->private_data;
+	struct spu_state	*csa = &ctx->csa;
+
+	/* If not using big pages, fallback to normal MM g_u_a */
+	if (!csa->use_big_pages)
+		return current->mm->get_unmapped_area(file, addr, len,
+						      pgoff, flags);
+
+	/* Else, try to obtain a 64K pages slice */
+	return slice_get_unmapped_area(addr, len, flags,
+				       MMU_PAGE_64K, 1, 0);
+}
+#endif /* CONFIG_SPU_FS_64K_LS */
+
 static const struct file_operations spufs_mem_fops = {
-	.open	 = spufs_mem_open,
-	.release = spufs_mem_release,
-	.read    = spufs_mem_read,
-	.write   = spufs_mem_write,
-	.llseek  = generic_file_llseek,
-	.mmap    = spufs_mem_mmap,
+	.open	 		= spufs_mem_open,
+	.read   		= spufs_mem_read,
+	.write   		= spufs_mem_write,
+	.llseek  		= generic_file_llseek,
+	.mmap    		= spufs_mem_mmap,
+#ifdef CONFIG_SPU_FS_64K_LS
+	.get_unmapped_area	= spufs_get_unmapped_area,
+#endif
 };
 
 static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
diff --git a/arch/powerpc/platforms/cell/spufs/lscsa_alloc.c b/arch/powerpc/platforms/cell/spufs/lscsa_alloc.c
new file mode 100644
index 0000000..f4b3c05
--- /dev/null
+++ b/arch/powerpc/platforms/cell/spufs/lscsa_alloc.c
@@ -0,0 +1,181 @@
+/*
+ * SPU local store allocation routines
+ *
+ * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+
+#include <asm/spu.h>
+#include <asm/spu_csa.h>
+#include <asm/mmu.h>
+
+static int spu_alloc_lscsa_std(struct spu_state *csa)
+{
+	struct spu_lscsa *lscsa;
+	unsigned char *p;
+
+	lscsa = vmalloc(sizeof(struct spu_lscsa));
+	if (!lscsa)
+		return -ENOMEM;
+	memset(lscsa, 0, sizeof(struct spu_lscsa));
+	csa->lscsa = lscsa;
+
+	/* Set LS pages reserved to allow for user-space mapping. */
+	for (p = lscsa->ls; p < lscsa->ls + LS_SIZE; p += PAGE_SIZE)
+		SetPageReserved(vmalloc_to_page(p));
+
+	return 0;
+}
+
+static void spu_free_lscsa_std(struct spu_state *csa)
+{
+	/* Clear reserved bit before vfree. */
+	unsigned char *p;
+
+	if (csa->lscsa == NULL)
+		return;
+
+	for (p = csa->lscsa->ls; p < csa->lscsa->ls + LS_SIZE; p += PAGE_SIZE)
+		ClearPageReserved(vmalloc_to_page(p));
+
+	vfree(csa->lscsa);
+}
+
+#ifdef CONFIG_SPU_FS_64K_LS
+
+#define SPU_64K_PAGE_SHIFT	16
+#define SPU_64K_PAGE_ORDER	(SPU_64K_PAGE_SHIFT - PAGE_SHIFT)
+#define SPU_64K_PAGE_COUNT	(1ul << SPU_64K_PAGE_ORDER)
+
+int spu_alloc_lscsa(struct spu_state *csa)
+{
+	struct page	**pgarray;
+	unsigned char	*p;
+	int		i, j, n_4k;
+
+	/* Check availability of 64K pages */
+	if (mmu_psize_defs[MMU_PAGE_64K].shift == 0)
+		goto fail;
+
+	csa->use_big_pages = 1;
+
+	pr_debug("spu_alloc_lscsa(csa=0x%p), trying to allocate 64K pages\n",
+		 csa);
+
+	/* First try to allocate our 64K pages. We need 5 of them
+	 * with the current implementation. In the future, we should try
+	 * to separate the lscsa with the actual local store image, thus
+	 * allowing us to require only 4 64K pages per context
+	 */
+	for (i = 0; i < SPU_LSCSA_NUM_BIG_PAGES; i++) {
+		/* XXX This is likely to fail, we should use a special pool
+		 *     similiar to what hugetlbfs does.
+		 */
+		csa->lscsa_pages[i] = alloc_pages(GFP_KERNEL,
+						  SPU_64K_PAGE_ORDER);
+		if (csa->lscsa_pages[i] == NULL)
+			goto fail;
+	}
+
+	pr_debug(" success ! creating vmap...\n");
+
+	/* Now we need to create a vmalloc mapping of these for the kernel
+	 * and SPU context switch code to use. Currently, we stick to a
+	 * normal kernel vmalloc mapping, which in our case will be 4K
+	 */
+	n_4k = SPU_64K_PAGE_COUNT * SPU_LSCSA_NUM_BIG_PAGES;
+	pgarray = kmalloc(sizeof(struct page *) * n_4k, GFP_KERNEL);
+	if (pgarray == NULL)
+		goto fail;
+	for (i = 0; i < SPU_LSCSA_NUM_BIG_PAGES; i++)
+		for (j = 0; j < SPU_64K_PAGE_COUNT; j++)
+			/* We assume all the struct page's are contiguous
+			 * which should be hopefully the case for an order 4
+			 * allocation..
+			 */
+			pgarray[i * SPU_64K_PAGE_COUNT + j] =
+				csa->lscsa_pages[i] + j;
+	csa->lscsa = vmap(pgarray, n_4k, VM_USERMAP, PAGE_KERNEL);
+	kfree(pgarray);
+	if (csa->lscsa == NULL)
+		goto fail;
+
+	memset(csa->lscsa, 0, sizeof(struct spu_lscsa));
+
+	/* Set LS pages reserved to allow for user-space mapping.
+	 *
+	 * XXX isn't that a bit obsolete ? I think we should just
+	 * make sure the page count is high enough. Anyway, won't harm
+	 * for now
+	 */
+	for (p = csa->lscsa->ls; p < csa->lscsa->ls + LS_SIZE; p += PAGE_SIZE)
+		SetPageReserved(vmalloc_to_page(p));
+
+	pr_debug(" all good !\n");
+
+	return 0;
+fail:
+	pr_debug("spufs: failed to allocate lscsa 64K pages, falling back\n");
+	spu_free_lscsa(csa);
+	return spu_alloc_lscsa_std(csa);
+}
+
+void spu_free_lscsa(struct spu_state *csa)
+{
+	unsigned char *p;
+	int i;
+
+	if (!csa->use_big_pages) {
+		spu_free_lscsa_std(csa);
+		return;
+	}
+	csa->use_big_pages = 0;
+
+	if (csa->lscsa == NULL)
+		goto free_pages;
+
+	for (p = csa->lscsa->ls; p < csa->lscsa->ls + LS_SIZE; p += PAGE_SIZE)
+		ClearPageReserved(vmalloc_to_page(p));
+
+	vunmap(csa->lscsa);
+	csa->lscsa = NULL;
+
+ free_pages:
+
+	for (i = 0; i < SPU_LSCSA_NUM_BIG_PAGES; i++)
+		if (csa->lscsa_pages[i])
+			__free_pages(csa->lscsa_pages[i], SPU_64K_PAGE_ORDER);
+}
+
+#else /* CONFIG_SPU_FS_64K_LS */
+
+int spu_alloc_lscsa(struct spu_state *csa)
+{
+	return spu_alloc_lscsa_std(csa);
+}
+
+void spu_free_lscsa(struct spu_state *csa)
+{
+	spu_free_lscsa_std(csa);
+}
+
+#endif /* !defined(CONFIG_SPU_FS_64K_LS) */
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c
index 29dc59c..71a0b41 100644
--- a/arch/powerpc/platforms/cell/spufs/switch.c
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -2188,40 +2188,30 @@ static void init_priv2(struct spu_state *csa)
  * as it is by far the largest of the context save regions,
  * and may need to be pinned or otherwise specially aligned.
  */
-void spu_init_csa(struct spu_state *csa)
+int spu_init_csa(struct spu_state *csa)
 {
-	struct spu_lscsa *lscsa;
-	unsigned char *p;
+	int rc;
 
 	if (!csa)
-		return;
+		return -EINVAL;
 	memset(csa, 0, sizeof(struct spu_state));
 
-	lscsa = vmalloc(sizeof(struct spu_lscsa));
-	if (!lscsa)
-		return;
+	rc = spu_alloc_lscsa(csa);
+	if (rc)
+		return rc;
 
-	memset(lscsa, 0, sizeof(struct spu_lscsa));
-	csa->lscsa = lscsa;
 	spin_lock_init(&csa->register_lock);
 
-	/* Set LS pages reserved to allow for user-space mapping. */
-	for (p = lscsa->ls; p < lscsa->ls + LS_SIZE; p += PAGE_SIZE)
-		SetPageReserved(vmalloc_to_page(p));
-
 	init_prob(csa);
 	init_priv1(csa);
 	init_priv2(csa);
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(spu_init_csa);
 
 void spu_fini_csa(struct spu_state *csa)
 {
-	/* Clear reserved bit before vfree. */
-	unsigned char *p;
-	for (p = csa->lscsa->ls; p < csa->lscsa->ls + LS_SIZE; p += PAGE_SIZE)
-		ClearPageReserved(vmalloc_to_page(p));
-
-	vfree(csa->lscsa);
+	spu_free_lscsa(csa);
 }
 EXPORT_SYMBOL_GPL(spu_fini_csa);
diff --git a/arch/powerpc/platforms/iseries/Kconfig b/arch/powerpc/platforms/iseries/Kconfig
index 46c3a8e..761d9e9 100644
--- a/arch/powerpc/platforms/iseries/Kconfig
+++ b/arch/powerpc/platforms/iseries/Kconfig
@@ -7,7 +7,9 @@ menu "iSeries device drivers"
 	depends on PPC_ISERIES
 
 config VIOCONS
-	tristate "iSeries Virtual Console Support (Obsolete)"
+	bool "iSeries Virtual Console Support (Obsolete)"
+	depends on !HVC_ISERIES
+	default n
 	help
 	  This is the old virtual console driver for legacy iSeries.
 	  You should use the iSeries Hypervisor Virtual Console
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 63e2306..093438b 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -100,6 +100,9 @@ static unsigned char slot_errbuf[RTAS_ERROR_LOG_MAX];
 static DEFINE_SPINLOCK(slot_errbuf_lock);
 static int eeh_error_buf_size;
 
+#define EEH_PCI_REGS_LOG_LEN 4096
+static unsigned char pci_regs_buf[EEH_PCI_REGS_LOG_LEN];
+
 /* System monitoring statistics */
 static unsigned long no_device;
 static unsigned long no_dn;
@@ -115,7 +118,8 @@ static unsigned long slot_resets;
 /* --------------------------------------------------------------- */
 /* Below lies the EEH event infrastructure */
 
-void eeh_slot_error_detail (struct pci_dn *pdn, int severity)
+static void rtas_slot_error_detail(struct pci_dn *pdn, int severity,
+                                   char *driver_log, size_t loglen)
 {
 	int config_addr;
 	unsigned long flags;
@@ -133,7 +137,8 @@ void eeh_slot_error_detail (struct pci_dn *pdn, int severity)
 	rc = rtas_call(ibm_slot_error_detail,
 	               8, 1, NULL, config_addr,
 	               BUID_HI(pdn->phb->buid),
-	               BUID_LO(pdn->phb->buid), NULL, 0,
+	               BUID_LO(pdn->phb->buid),
+	               virt_to_phys(driver_log), loglen,
 	               virt_to_phys(slot_errbuf),
 	               eeh_error_buf_size,
 	               severity);
@@ -144,6 +149,84 @@ void eeh_slot_error_detail (struct pci_dn *pdn, int severity)
 }
 
 /**
+ * gather_pci_data - copy assorted PCI config space registers to buff
+ * @pdn: device to report data for
+ * @buf: point to buffer in which to log
+ * @len: amount of room in buffer
+ *
+ * This routine captures assorted PCI configuration space data,
+ * and puts them into a buffer for RTAS error logging.
+ */
+static size_t gather_pci_data(struct pci_dn *pdn, char * buf, size_t len)
+{
+	u32 cfg;
+	int cap, i;
+	int n = 0;
+
+	n += scnprintf(buf+n, len-n, "%s\n", pdn->node->full_name);
+	printk(KERN_WARNING "EEH: of node=%s\n", pdn->node->full_name);
+
+	rtas_read_config(pdn, PCI_VENDOR_ID, 4, &cfg);
+	n += scnprintf(buf+n, len-n, "dev/vend:%08x\n", cfg);
+	printk(KERN_WARNING "EEH: PCI device/vendor: %08x\n", cfg);
+
+	rtas_read_config(pdn, PCI_COMMAND, 4, &cfg);
+	n += scnprintf(buf+n, len-n, "cmd/stat:%x\n", cfg);
+	printk(KERN_WARNING "EEH: PCI cmd/status register: %08x\n", cfg);
+
+	/* Dump out the PCI-X command and status regs */
+	cap = pci_find_capability(pdn->pcidev, PCI_CAP_ID_PCIX);
+	if (cap) {
+		rtas_read_config(pdn, cap, 4, &cfg);
+		n += scnprintf(buf+n, len-n, "pcix-cmd:%x\n", cfg);
+		printk(KERN_WARNING "EEH: PCI-X cmd: %08x\n", cfg);
+
+		rtas_read_config(pdn, cap+4, 4, &cfg);
+		n += scnprintf(buf+n, len-n, "pcix-stat:%x\n", cfg);
+		printk(KERN_WARNING "EEH: PCI-X status: %08x\n", cfg);
+	}
+
+	/* If PCI-E capable, dump PCI-E cap 10, and the AER */
+	cap = pci_find_capability(pdn->pcidev, PCI_CAP_ID_EXP);
+	if (cap) {
+		n += scnprintf(buf+n, len-n, "pci-e cap10:\n");
+		printk(KERN_WARNING
+		       "EEH: PCI-E capabilities and status follow:\n");
+
+		for (i=0; i<=8; i++) {
+			rtas_read_config(pdn, cap+4*i, 4, &cfg);
+			n += scnprintf(buf+n, len-n, "%02x:%x\n", 4*i, cfg);
+			printk(KERN_WARNING "EEH: PCI-E %02x: %08x\n", i, cfg);
+		}
+
+		cap = pci_find_ext_capability(pdn->pcidev,PCI_EXT_CAP_ID_ERR);
+		if (cap) {
+			n += scnprintf(buf+n, len-n, "pci-e AER:\n");
+			printk(KERN_WARNING
+			       "EEH: PCI-E AER capability register set follows:\n");
+
+			for (i=0; i<14; i++) {
+				rtas_read_config(pdn, cap+4*i, 4, &cfg);
+				n += scnprintf(buf+n, len-n, "%02x:%x\n", 4*i, cfg);
+				printk(KERN_WARNING "EEH: PCI-E AER %02x: %08x\n", i, cfg);
+			}
+		}
+	}
+	return n;
+}
+
+void eeh_slot_error_detail(struct pci_dn *pdn, int severity)
+{
+	size_t loglen = 0;
+	memset(pci_regs_buf, 0, EEH_PCI_REGS_LOG_LEN);
+
+	rtas_pci_enable(pdn, EEH_THAW_MMIO);
+	loglen = gather_pci_data(pdn, pci_regs_buf, EEH_PCI_REGS_LOG_LEN);
+
+	rtas_slot_error_detail(pdn, severity, pci_regs_buf, loglen);
+}
+
+/**
  * read_slot_reset_state - Read the reset state of a device node's slot
  * @dn: device node to read
  * @rets: array to return results in
diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index 3170e00..f07d849 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -361,11 +361,12 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
 		goto hard_fail;
 	}
 
-	eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */);
 	printk(KERN_WARNING
-	   "EEH: This PCI device has failed %d times since last reboot: "
-		"location=%s driver=%s pci addr=%s\n",
-		frozen_pdn->eeh_freeze_count, location, drv_str, pci_str);
+	   "EEH: This PCI device has failed %d times in the last hour:\n",
+		frozen_pdn->eeh_freeze_count);
+	printk(KERN_WARNING
+		"EEH: location=%s driver=%s pci addr=%s\n",
+		location, drv_str, pci_str);
 
 	/* Walk the various device drivers attached to this slot through
 	 * a reset sequence, giving each an opportunity to do what it needs
@@ -375,6 +376,11 @@ struct pci_dn * handle_eeh_events (struct eeh_event *event)
 	 */
 	pci_walk_bus(frozen_bus, eeh_report_error, &result);
 
+	/* Since rtas may enable MMIO when posting the error log,
+	 * don't post the error log until after all dev drivers
+	 * have been informed. */
+	eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */);
+
 	/* If all device drivers were EEH-unaware, then shut
 	 * down all of the device drivers, and hope they
 	 * go down willingly, without panicing the system.