Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  ide-generic: don't probe all legacy ISA IDE ports by default
  ide-cs: fix releasing I/O resources
  ide-cs: fix probing and add warm-plug support
  ide-pmac: remove bogus comment about pmac_ide_setup_device()
  ide-pmac: add ->cable_detect method
  ide-pmac: bugfix for media-bay support rework
  opti621: add PIO 4 support
  opti621: use pre-calculated PIO timings
  opti621: program devices timings separately in ->set_pio_mode
  opti621: use PCI clock value provided by controller
  opti621: remove DMA support
  opti621: disable read prefetch

diff --git a/Documentation/filesystems/sysfs-pci.txt b/Documentation/filesystems/sysfs-pci.txt
index 5daa2aa..68ef488 100644 (file)
--- a/Documentation/filesystems/sysfs-pci.txt
+++ b/Documentation/filesystems/sysfs-pci.txt
@@ -36,6 +36,7 @@ files, each with their own function.
        local_cpus         nearby CPU mask (cpumask, ro)
        resource                   PCI resource host addresses (ascii, ro)
        resource0..N       PCI resource N, if present (binary, mmap)
+       resource0_wc..N_wc  PCI WC map resource N, if prefetchable (binary, mmap)
        rom                PCI ROM resource, if present (binary, ro)
        subsystem_device           PCI subsystem device (ascii, ro)
        subsystem_vendor           PCI subsystem vendor (ascii, ro)

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index c5ef1af..dc00a13 100644 (file)
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -378,6 +378,7 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
        struct page *page;
        unsigned long dma_mask = 0;
        dma_addr_t bus;
+       int noretry = 0;
 
        /* ignore region specifiers */
        gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
@@ -397,20 +398,25 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
        if (dev->dma_mask == NULL)
                return NULL;
 
-       /* Don't invoke OOM killer */
-       gfp |= __GFP_NORETRY;
+       /* Don't invoke OOM killer or retry in lower 16MB DMA zone */
+       if (gfp & __GFP_DMA)
+               noretry = 1;
 
 #ifdef CONFIG_X86_64
        /* Why <=? Even when the mask is smaller than 4GB it is often
           larger than 16MB and in this case we have a chance of
           finding fitting memory in the next higher zone first. If
           not retry with true GFP_DMA. -AK */
-       if (dma_mask <= DMA_32BIT_MASK && !(gfp & GFP_DMA))
+       if (dma_mask <= DMA_32BIT_MASK && !(gfp & GFP_DMA)) {
                gfp |= GFP_DMA32;
+               if (dma_mask < DMA_32BIT_MASK)
+                       noretry = 1;
+       }
 #endif
 
  again:
-       page = dma_alloc_pages(dev, gfp, get_order(size));
+       page = dma_alloc_pages(dev,
+               noretry ? gfp | __GFP_NORETRY : gfp, get_order(size));
        if (page == NULL)
                return NULL;
 

diff --git a/arch/x86/pci/common.c b/arch/x86/pci/common.c
index 6e64aaf..940185e 100644 (file)
--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -328,18 +328,18 @@ static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
 #endif
        {
                .callback = set_bf_sort,
-               .ident = "HP ProLiant DL385 G2",
+               .ident = "HP ProLiant DL360",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "HP"),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL360"),
                },
        },
        {
                .callback = set_bf_sort,
-               .ident = "HP ProLiant DL585 G2",
+               .ident = "HP ProLiant DL380",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "HP"),
-                       DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL380"),
                },
        },
        {}

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 72cf61e..e1637bd 100644 (file)
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -181,7 +181,7 @@ static int pci_call_probe(struct pci_driver *drv, struct pci_dev *dev,
           any need to change it. */
        struct mempolicy *oldpol;
        cpumask_t oldmask = current->cpus_allowed;
-       int node = pcibus_to_node(dev->bus);
+       int node = dev_to_node(&dev->dev);
 
        if (node >= 0) {
                node_to_cpumask_ptr(nodecpumask, node);

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 271d41c..6f3c744 100644 (file)
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -489,13 +489,13 @@ pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
  * @kobj: kobject for mapping
  * @attr: struct bin_attribute for the file being mapped
  * @vma: struct vm_area_struct passed into the mmap
+ * @write_combine: 1 for write_combine mapping
  *
  * Use the regular PCI mapping routines to map a PCI resource into userspace.
- * FIXME: write combining?  maybe automatic for prefetchable regions?
  */
 static int
 pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
-                 struct vm_area_struct *vma)
+                 struct vm_area_struct *vma, int write_combine)
 {
        struct pci_dev *pdev = to_pci_dev(container_of(kobj,
                                                       struct device, kobj));
@@ -518,7 +518,21 @@ pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
        vma->vm_pgoff += start >> PAGE_SHIFT;
        mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
 
-       return pci_mmap_page_range(pdev, vma, mmap_type, 0);
+       return pci_mmap_page_range(pdev, vma, mmap_type, write_combine);
+}
+
+static int
+pci_mmap_resource_uc(struct kobject *kobj, struct bin_attribute *attr,
+                    struct vm_area_struct *vma)
+{
+       return pci_mmap_resource(kobj, attr, vma, 0);
+}
+
+static int
+pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr,
+                    struct vm_area_struct *vma)
+{
+       return pci_mmap_resource(kobj, attr, vma, 1);
 }
 
 /**
@@ -541,9 +555,46 @@ pci_remove_resource_files(struct pci_dev *pdev)
                        sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
                        kfree(res_attr);
                }
+
+               res_attr = pdev->res_attr_wc[i];
+               if (res_attr) {
+                       sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
+                       kfree(res_attr);
+               }
        }
 }
 
+static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
+{
+       /* allocate attribute structure, piggyback attribute name */
+       int name_len = write_combine ? 13 : 10;
+       struct bin_attribute *res_attr;
+       int retval;
+
+       res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
+       if (res_attr) {
+               char *res_attr_name = (char *)(res_attr + 1);
+
+               if (write_combine) {
+                       pdev->res_attr_wc[num] = res_attr;
+                       sprintf(res_attr_name, "resource%d_wc", num);
+                       res_attr->mmap = pci_mmap_resource_wc;
+               } else {
+                       pdev->res_attr[num] = res_attr;
+                       sprintf(res_attr_name, "resource%d", num);
+                       res_attr->mmap = pci_mmap_resource_uc;
+               }
+               res_attr->attr.name = res_attr_name;
+               res_attr->attr.mode = S_IRUSR | S_IWUSR;
+               res_attr->size = pci_resource_len(pdev, num);
+               res_attr->private = &pdev->resource[num];
+               retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
+       } else
+               retval = -ENOMEM;
+
+       return retval;
+}
+
 /**
  * pci_create_resource_files - create resource files in sysfs for @dev
  * @dev: dev in question
@@ -557,31 +608,19 @@ static int pci_create_resource_files(struct pci_dev *pdev)
 
        /* Expose the PCI resources from this device as files */
        for (i = 0; i < PCI_ROM_RESOURCE; i++) {
-               struct bin_attribute *res_attr;
 
                /* skip empty resources */
                if (!pci_resource_len(pdev, i))
                        continue;
 
-               /* allocate attribute structure, piggyback attribute name */
-               res_attr = kzalloc(sizeof(*res_attr) + 10, GFP_ATOMIC);
-               if (res_attr) {
-                       char *res_attr_name = (char *)(res_attr + 1);
-
-                       pdev->res_attr[i] = res_attr;
-                       sprintf(res_attr_name, "resource%d", i);
-                       res_attr->attr.name = res_attr_name;
-                       res_attr->attr.mode = S_IRUSR | S_IWUSR;
-                       res_attr->size = pci_resource_len(pdev, i);
-                       res_attr->mmap = pci_mmap_resource;
-                       res_attr->private = &pdev->resource[i];
-                       retval = sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
-                       if (retval) {
-                               pci_remove_resource_files(pdev);
-                               return retval;
-                       }
-               } else {
-                       return -ENOMEM;
+               retval = pci_create_attr(pdev, i, 0);
+               /* for prefetchable resources, create a WC mappable file */
+               if (!retval && pdev->resource[i].flags & IORESOURCE_PREFETCH)
+                       retval = pci_create_attr(pdev, i, 1);
+
+               if (retval) {
+                       pci_remove_resource_files(pdev);
+                       return retval;
                }
        }
        return 0;

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 0f3c2bb..7084e7e 100644 (file)
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -124,9 +124,9 @@ static int virtio_dev_probe(struct device *_d)
        if (err)
                add_status(dev, VIRTIO_CONFIG_S_FAILED);
        else {
-               add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
                /* They should never have set feature bits beyond 32 */
                dev->config->set_features(dev, dev->features[0]);
+               add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
        }
        return err;
 }

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 509159b..d18b1dd 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -206,6 +206,7 @@ struct pci_dev {
        struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
        int rom_attr_enabled;           /* has display of the rom attribute been enabled? */
        struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
+       struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
 #ifdef CONFIG_PCI_MSI
        struct list_head msi_list;
 #endif