# HG changeset patch
# User Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
# Date 1231298514 -32400
# Node ID 28acedb66302a29c9ef14a3084b4736d3fc192f1
# Parent 79bf5894b3f93e5742a43d05572156b23e8fffbe
# Parent 79e82ae1bad02c0dfb504db3153599e52a0affb3
merge with linux-2.6.18-xen.hg
---
Documentation/kernel-parameters.txt | 15
drivers/acpi/pci_root.c | 65 +++
drivers/acpi/scan.c | 47 +-
drivers/pci/Kconfig | 7
drivers/pci/Makefile | 1
drivers/pci/guestdev.c | 668 ++++++++++++++++++++++++++++++++++++
drivers/pci/pci.h | 8
drivers/pci/quirks.c | 2
drivers/pci/reassigndev.c | 13
drivers/pci/setup-bus.c | 2
drivers/pci/setup-res.c | 6
drivers/xen/evtchn/evtchn.c | 18
drivers/xen/pciback/pci_stub.c | 10
include/acpi/acpi_bus.h | 10
include/asm-x86_64/setup.h | 2
include/linux/acpi.h | 1
include/linux/pci.h | 4
17 files changed, 850 insertions(+), 29 deletions(-)
diff -r 79bf5894b3f9 -r 28acedb66302 Documentation/kernel-parameters.txt
--- a/Documentation/kernel-parameters.txt Mon Jan 05 14:13:49 2009 +0900
+++ b/Documentation/kernel-parameters.txt Wed Jan 07 12:21:54 2009 +0900
@@ -1240,6 +1240,21 @@ running once the system is up.
bootloader. This is currently used on
IXP2000 systems where the bus has to be
configured a certain way for adjunct CPUs.
+ reassigndev=
+ Format:
[<segment>:]<bus>:<dev>.<func>[,[<segment>:]<bus>:<dev>.<func>[,...]]
+ Specifies device to reassign page-aligned memory
+ resources. PCI-PCI bridge can be specified, if
+ resource windows need to be expanded.
+ reassign_resources
+ Use guestdev parameter to reassign device's
+ resources.
+ guestdev=
+ Format: <device path>[,<device path>[,...]]
+ Format of device path:
<hid>[:<uid>]-<dev>.<func>[-<dev>.<func>[...]]
+ Specifies PCI device for guest domain.
+ If PCI-PCI bridge is specified, all
+ PCI devices behind PCI-PCI bridge are
+ reserved.
pcmv= [HW,PCMCIA] BadgePAD 4
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/acpi/pci_root.c
--- a/drivers/acpi/pci_root.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/acpi/pci_root.c Wed Jan 07 12:21:54 2009 +0900
@@ -151,6 +151,36 @@ static acpi_status try_get_root_bridge_b
return AE_OK;
}
+ssize_t
+acpi_device_seg_show(struct acpi_device *acpi_dev, char *buf)
+{
+ struct list_head *entry;
+
+ list_for_each(entry, &acpi_pci_roots) {
+ struct acpi_pci_root *root;
+ root = list_entry(entry, struct acpi_pci_root, node);
+ if (root->device == acpi_dev)
+ return sprintf(buf, "%04x\n", root->id.segment);
+ }
+ return 0;
+}
+ACPI_DEVICE_ATTR(seg, 0444, acpi_device_seg_show, NULL);
+
+ssize_t
+acpi_device_bbn_show(struct acpi_device *acpi_dev, char *buf)
+{
+ struct list_head *entry;
+
+ list_for_each(entry, &acpi_pci_roots) {
+ struct acpi_pci_root *root;
+ root = list_entry(entry, struct acpi_pci_root, node);
+ if (root->device == acpi_dev)
+ return sprintf(buf, "%02x\n", root->id.bus);
+ }
+ return 0;
+}
+ACPI_DEVICE_ATTR(bbn, 0444, acpi_device_bbn_show, NULL);
+
static int acpi_pci_root_add(struct acpi_device *device)
{
int result = 0;
@@ -298,6 +328,12 @@ static int acpi_pci_root_add(struct acpi
if (ACPI_SUCCESS(status))
result = acpi_pci_irq_add_prt(device->handle, root->id.segment,
root->id.bus);
+ if (result)
+ goto end;
+
+ sysfs_create_file(&device->kobj, &acpi_device_attr_seg.attr);
+
+ sysfs_create_file(&device->kobj, &acpi_device_attr_bbn.attr);
end:
if (result) {
@@ -356,3 +392,32 @@ static int __init acpi_pci_root_init(voi
}
subsys_initcall(acpi_pci_root_init);
+
+int acpi_pci_get_root_seg_bbn(char *hid, char *uid, int *seg, int *bbn)
+{
+ struct list_head *entry;
+
+ list_for_each(entry, &acpi_pci_roots) {
+ struct acpi_pci_root *root;
+ root = list_entry(entry, struct acpi_pci_root, node);
+ if (!root->device->flags.hardware_id)
+ continue;
+
+ if (strcmp(root->device->pnp.hardware_id, hid))
+ continue;
+
+ if (!root->device->flags.unique_id) {
+ if (strlen(uid))
+ continue;
+ } else {
+ if (strcmp(root->device->pnp.unique_id, uid))
+ continue;
+ }
+
+ *seg = (int)root->id.segment;
+ *bbn = (int)root->id.bus;
+ return TRUE;
+ }
+ return FALSE;
+}
+EXPORT_SYMBOL(acpi_pci_get_root_seg_bbn);
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/acpi/scan.c
--- a/drivers/acpi/scan.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/acpi/scan.c Wed Jan 07 12:21:54 2009 +0900
@@ -31,12 +31,6 @@ static void acpi_device_release(struct k
kfree(dev->pnp.cid_list);
kfree(dev);
}
-
-struct acpi_device_attribute {
- struct attribute attr;
- ssize_t(*show) (struct acpi_device *, char *);
- ssize_t(*store) (struct acpi_device *, const char *, size_t);
-};
typedef void acpi_device_sysfs_files(struct kobject *,
const struct attribute *);
@@ -110,6 +104,42 @@ static struct kset acpi_namespace_kset =
.ktype = &ktype_acpi_ns,
.uevent_ops = &namespace_uevent_ops,
};
+
+static ssize_t
+acpi_device_hid_show(struct acpi_device *acpi_dev, char *buf)
+{
+ return sprintf(buf, "%s\n", acpi_dev->pnp.hardware_id);
+}
+ACPI_DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL);
+
+static ssize_t
+acpi_device_uid_show(struct acpi_device *acpi_dev, char *buf)
+{
+ return sprintf(buf, "%s\n", acpi_dev->pnp.unique_id);
+}
+ACPI_DEVICE_ATTR(uid, 0444, acpi_device_uid_show, NULL);
+
+static int acpi_device_setup_files(struct acpi_device *dev)
+{
+ int result = 0;
+
+ if (dev->flags.hardware_id) {
+ result = sysfs_create_file(&dev->kobj,
+ &acpi_device_attr_hid.attr);
+ if (result)
+ goto end;
+ }
+
+ if (dev->flags.unique_id) {
+ result = sysfs_create_file(&dev->kobj,
+ &acpi_device_attr_uid.attr);
+ if (result)
+ goto end;
+ }
+
+ end:
+ return result;
+}
static void acpi_device_register(struct acpi_device *device,
struct acpi_device *parent)
@@ -146,6 +176,7 @@ static void acpi_device_register(struct
printk(KERN_WARNING "%s: kobject_register error: %d\n",
__FUNCTION__, err);
create_sysfs_device_files(device);
+ acpi_device_setup_files(device);
}
static void acpi_device_unregister(struct acpi_device *device, int type)
@@ -343,10 +374,6 @@ static int acpi_bus_get_wakeup_device_fl
--------------------------------------------------------------------------
*/
static ssize_t acpi_eject_store(struct acpi_device *device,
const char *buf, size_t count);
-
-#define ACPI_DEVICE_ATTR(_name,_mode,_show,_store) \
-static struct acpi_device_attribute acpi_device_attr_##_name = \
- __ATTR(_name, _mode, _show, _store)
ACPI_DEVICE_ATTR(eject, 0200, NULL, acpi_eject_store);
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/Kconfig
--- a/drivers/pci/Kconfig Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/pci/Kconfig Wed Jan 07 12:21:54 2009 +0900
@@ -30,3 +30,10 @@ config PCI_DEBUG
When in doubt, say N.
+config PCI_GUESTDEV
+ bool "PCI Device Reservation for Passthrough"
+ depends on PCI
+ default y
+ help
+ Say Y here if you want to reserve PCI device for passthrough.
+
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/Makefile
--- a/drivers/pci/Makefile Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/pci/Makefile Wed Jan 07 12:21:54 2009 +0900
@@ -6,6 +6,7 @@ obj-y += access.o bus.o probe.o remove.
pci-driver.o search.o pci-sysfs.o rom.o setup-res.o
obj-$(CONFIG_PCI_REASSIGN) += reassigndev.o
obj-$(CONFIG_PROC_FS) += proc.o
+obj-$(CONFIG_PCI_GUESTDEV) += guestdev.o
# Build PCI Express stuff if needed
obj-$(CONFIG_PCIEPORTBUS) += pcie/
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/guestdev.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/pci/guestdev.c Wed Jan 07 12:21:54 2009 +0900
@@ -0,0 +1,668 @@
+/*
+ * Copyright (c) 2008, NEC Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/acpi.h>
+#include <asm-x86_64/setup.h>
+
+#define HID_LEN 8
+#define UID_LEN 8
+#define DEV_LEN 2
+#define FUNC_LEN 1
+#define DEV_NUM_MAX 31
+#define FUNC_NUM_MAX 7
+#define INVALID_SEG (-1)
+#define INVALID_BBN (-1)
+#define PATH_STR_MAX 128
+
+struct guestdev {
+ struct list_head root_list;
+ char hid[HID_LEN + 1];
+ char uid[UID_LEN + 1];
+ int seg;
+ int bbn;
+ struct guestdev_node *child;
+};
+
+struct guestdev_node {
+ int dev;
+ int func;
+ struct guestdev_node *child;
+};
+
+struct pcidev_sbdf {
+ int seg;
+ int bus;
+ struct pcidev_sbdf_node *child;
+};
+
+struct pcidev_sbdf_node {
+ int dev;
+ int func;
+ struct pcidev_sbdf_node *child;
+};
+
+static int reassign_resources = 0;
+
+static char guestdev_param[COMMAND_LINE_SIZE];
+LIST_HEAD(guestdev_list);
+
+/* Get hid and uid */
+static int pci_get_hid_uid(char *str, char *hid, char *uid)
+{
+ char *sp, *ep;
+ int len;
+
+ sp = str;
+ ep = strchr(sp, ':');
+ if (!ep) {
+ ep = strchr(sp, '-');
+ if (!ep)
+ goto format_err_end;
+ }
+ /* hid length */
+ len = ep - sp;
+ if (len <= 0 || HID_LEN < len)
+ goto format_err_end;
+
+ strncpy(hid, sp, len);
+ hid[len] = '\0';
+
+ if (*ep == '-') { /* no uid */
+ uid[0] = '\0';
+ return TRUE;
+ }
+
+ sp = ep + 1;
+ ep = strchr(sp, '-');
+ if (!ep)
+ ep = strchr(sp, '\0');
+
+ /* uid length */
+ len = ep - sp;
+ if (len <= 0 || UID_LEN < len)
+ goto format_err_end;
+
+ strncpy(uid, sp, len);
+ uid[len] = '\0';
+ return TRUE;
+
+format_err_end:
+ return FALSE;
+}
+
+/* Get device and function */
+static int pci_get_dev_func(char *str, int *dev, int *func)
+{
+ if (sscanf(str, "%02x.%01x", dev, func) != 2)
+ goto format_err_end;
+
+ if (*dev < 0 || DEV_NUM_MAX < *dev)
+ goto format_err_end;
+
+ if (*func < 0 || FUNC_NUM_MAX < *func)
+ goto format_err_end;
+
+ return TRUE;
+
+format_err_end:
+ return FALSE;
+}
+
+/* Check extended guestdev parameter format error */
+static int pci_check_extended_guestdev_format(char *str)
+{
+ int flg;
+ char *p;
+
+ /* Check extended format */
+ if (strpbrk(str, "(|)") == NULL)
+ return TRUE;
+
+ flg = 0;
+ p = str;
+ while (*p) {
+ switch (*p) {
+ case '(':
+ /* Check nesting error */
+ if (flg != 0)
+ goto format_err_end;
+ flg = 1;
+ /* Check position of '(' is head or
+ previos charactor of '(' is not '-'. */
+ if (p == str || *(p - 1) != '-')
+ goto format_err_end;
+ break;
+ case ')':
+ /* Check nesting error */
+ if (flg != 1)
+ goto format_err_end;
+ flg = 0;
+ /* Check next charactor of ')' is not '\0' */
+ if (*(p + 1) != '\0')
+ goto format_err_end;
+ break;
+ case '|':
+ /* Check position of '|' is outside of '(' and ')' */
+ if (flg != 1)
+ goto format_err_end;
+ break;
+ default:
+ break;
+ }
+ p++;
+ }
+ /* Check number of '(' and ')' are not equal */
+ if (flg != 0)
+ goto format_err_end;
+ return TRUE;
+
+format_err_end:
+ printk(KERN_ERR
+ "PCI: The format of the guestdev parameter is illegal. [%s]\n",
+ str);
+ return FALSE;
+}
+
+/* Make guestdev strings */
+static void pci_make_guestdev_path_str(struct guestdev *gdev,
+ char *gdev_str, int buf_size)
+{
+ struct guestdev_node *node;
+ /* max length for "HID:UID" (hid+uid+':'+'\0') */
+ const int hid_uid_len = HID_LEN + UID_LEN + 2;
+ /* max length for "-DEV#.FUNC#" (dev+func+'-'+'.'+'\0') */
+ const int dev_func_len = DEV_LEN + FUNC_LEN + 3;
+
+ /* check buffer size for HID:UID */
+ if (buf_size < hid_uid_len)
+ return;
+
+ memset(gdev_str, 0, buf_size);
+
+ if (strlen(gdev->uid))
+ sprintf(gdev_str, "%s:%s", gdev->hid, gdev->uid);
+ else
+ sprintf(gdev_str, "%s", gdev->hid);
+ buf_size -= strlen(gdev_str);
+
+ node = gdev->child;
+ while (node) {
+ /* check buffer size for -DEV#.FUNC# */
+ if (buf_size < dev_func_len)
+ return;
+ sprintf(gdev_str + strlen(gdev_str), "-%02x.%01x",
+ node->dev, node->func);
+ buf_size -= dev_func_len;
+ node = node->child;
+ }
+}
+
+/* Free guestdev and nodes */
+static void pci_free_guestdev(struct guestdev *gdev)
+{
+ struct guestdev_node *node, *next;
+
+ if (!gdev)
+ return;
+
+ node = gdev->child;
+ while (node) {
+ next = node->child;
+ kfree(node);
+ node = next;
+ }
+ list_del(&gdev->root_list);
+ kfree(gdev);
+}
+
+/* Free guestdev_list */
+static void pci_free_guestdev_list(void)
+{
+ struct list_head *head, *tmp;
+ struct guestdev *gdev;
+
+ list_for_each_safe(head, tmp, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ pci_free_guestdev(gdev);
+ }
+}
+
+/* Copy guestdev and nodes */
+struct guestdev *pci_copy_guestdev(struct guestdev *gdev_src)
+{
+ struct guestdev *gdev;
+ struct guestdev_node *node, *node_src, *node_upper;
+
+ gdev = kmalloc(sizeof(*gdev), GFP_KERNEL);
+ if (!gdev)
+ goto allocate_err_end;
+
+ memset(gdev, 0, sizeof(*gdev));
+ INIT_LIST_HEAD(&gdev->root_list);
+ strcpy(gdev->hid, gdev_src->hid);
+ strcpy(gdev->uid, gdev_src->uid);
+ gdev->seg = gdev_src->seg;
+ gdev->bbn = gdev_src->bbn;
+
+ node_upper = NULL;
+
+ node_src = gdev_src->child;
+ while (node_src) {
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (!node)
+ goto allocate_err_end;
+ memset(node, 0, sizeof(*node));
+ node->dev = node_src->dev;
+ node->func = node_src->func;
+ if (!node_upper)
+ gdev->child = node;
+ else
+ node_upper->child = node;
+ node_upper = node;
+ node_src = node_src->child;
+ }
+
+ return gdev;
+
+allocate_err_end:
+ if (gdev)
+ pci_free_guestdev(gdev);
+ printk(KERN_ERR "PCI: Failed to allocate memory.\n");
+ return NULL;
+}
+
+/* Make guestdev from path strings */
+static int pci_make_guestdev(char *path_str)
+{
+ char hid[HID_LEN + 1], uid[UID_LEN + 1];
+ char *sp, *ep;
+ struct guestdev *gdev, *gdev_org;
+ struct guestdev_node *node, *node_tmp;
+ int dev, func, ret_val;
+
+ ret_val = 0;
+ gdev = gdev_org = NULL;
+ sp = path_str;
+ /* Look for end of hid:uid'-' */
+ ep = strchr(sp, '-');
+ /* Only hid, uid. (No dev, func) */
+ if (!ep)
+ goto format_err_end;
+
+ memset(hid, 0 ,sizeof(hid));
+ memset(uid, 0, sizeof(uid));
+ if (!pci_get_hid_uid(sp, hid, uid))
+ goto format_err_end;
+
+ gdev_org = kmalloc(sizeof(*gdev_org), GFP_KERNEL);
+ if (!gdev_org)
+ goto allocate_err_end;
+ memset(gdev_org, 0, sizeof(*gdev_org));
+ INIT_LIST_HEAD(&gdev_org->root_list);
+ strcpy(gdev_org->hid, hid);
+ strcpy(gdev_org->uid, uid);
+ gdev_org->seg = INVALID_SEG;
+ gdev_org->bbn = INVALID_BBN;
+
+ gdev = gdev_org;
+
+ sp = ep + 1;
+ ep = sp;
+ do {
+ if (*sp == '(') {
+ sp++;
+ if (strchr(sp, '|')) {
+ gdev = pci_copy_guestdev(gdev_org);
+ if (!gdev) {
+ ret_val = -ENOMEM;
+ goto err_end;
+ }
+ }
+ continue;
+ }
+ if (pci_get_dev_func(sp, &dev, &func)) {
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (!node)
+ goto allocate_err_end;
+ memset(node, 0, sizeof(*node));
+ node->dev = dev;
+ node->func = func;
+ /* add node to end of guestdev */
+ if (gdev->child) {
+ node_tmp = gdev->child;
+ while (node_tmp->child) {
+ node_tmp = node_tmp->child;
+ }
+ node_tmp->child = node;
+ } else
+ gdev->child = node;
+ } else
+ goto format_err_end;
+
+ ep = strpbrk(sp, "-|)");
+ if (!ep)
+ ep = strchr(sp, '\0');
+ /* *ep is '|' OR ')' OR '\0' ? */
+ if (*ep != '-') {
+ list_add_tail(&gdev->root_list, &guestdev_list);
+ if (*ep == '|') {
+ /* Between '|' and '|' ? */
+ if (strchr(ep + 1, '|')) {
+ gdev = pci_copy_guestdev(gdev_org);
+ if (!gdev) {
+ ret_val = -ENOMEM;
+ goto err_end;
+ }
+ } else
+ gdev = gdev_org;
+ }
+ }
+ if (*ep == ')')
+ ep++;
+ sp = ep + 1;
+ } while (*ep != '\0');
+
+ return ret_val;
+
+format_err_end:
+ printk(KERN_ERR
+ "PCI: The format of the guestdev parameter is illegal. [%s]\n",
+ path_str);
+ ret_val = -EINVAL;
+ goto err_end;
+
+allocate_err_end:
+ printk(KERN_ERR "PCI: Failed to allocate memory.\n");
+ ret_val = -ENOMEM;
+ goto err_end;
+
+err_end:
+ if (gdev_org && (gdev_org != gdev))
+ pci_free_guestdev(gdev_org);
+ if (gdev)
+ pci_free_guestdev(gdev);
+ return ret_val;
+}
+
+/* Parse guestdev parameter */
+static int __init pci_parse_guestdev(void)
+{
+ int len, ret_val;
+ char *sp, *ep;
+ struct list_head *head;
+ struct guestdev *gdev;
+ char path_str[PATH_STR_MAX];
+
+ ret_val = 0;
+
+ len = strlen(guestdev_param);
+ if (len == 0)
+ goto end;
+
+ sp = guestdev_param;
+
+ do {
+ ep = strchr(sp, ',');
+ /* Chop */
+ if (ep)
+ *ep = '\0';
+ if (!pci_check_extended_guestdev_format(sp)) {
+ pci_free_guestdev_list();
+ return -EINVAL;
+ }
+
+ ret_val = pci_make_guestdev(sp);
+ if (ret_val) {
+ pci_free_guestdev_list();
+ return ret_val;
+ }
+ sp = ep + 1;
+ } while (ep);
+
+ list_for_each(head, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ pci_make_guestdev_path_str(gdev, path_str, PATH_STR_MAX);
+ printk(KERN_DEBUG
+ "PCI: %s has been reserved for guest domain.\n",
+ path_str);
+ }
+
+end:
+ return ret_val;
+}
+
+arch_initcall(pci_parse_guestdev);
+
+/* Get command line */
+static int __init pci_guestdev_setup(char *str)
+{
+ if (strlen(str) >= COMMAND_LINE_SIZE)
+ return 0;
+ strcpy(guestdev_param, str);
+ return 1;
+}
+
+__setup("guestdev=", pci_guestdev_setup);
+
+/* Free sbdf and nodes */
+static void pci_free_sbdf(struct pcidev_sbdf *sbdf)
+{
+ struct pcidev_sbdf_node *node, *next;
+
+ node = sbdf->child;
+ while (node) {
+ next = node->child;
+ kfree(node);
+ node = next;
+ }
+ /* Skip kfree(sbdf) */
+}
+
+/* Is sbdf within guestdev */
+static int pci_sbdf_in_guestdev_sub_tree(struct guestdev *gdev,
+ struct pcidev_sbdf *sbdf)
+{
+ int seg, bbn;
+ struct guestdev_node *gdev_node;
+ struct pcidev_sbdf_node *sbdf_node;
+
+ if (!gdev || !sbdf)
+ return FALSE;
+
+ /* Compare seg and bbn */
+ if (gdev->seg == INVALID_SEG ||
+ gdev->bbn == INVALID_BBN) {
+ if (acpi_pci_get_root_seg_bbn(gdev->hid,
+ gdev->uid, &seg, &bbn)) {
+ gdev->seg = seg;
+ gdev->bbn = bbn;
+ } else
+ return FALSE;
+ }
+
+ if (gdev->seg != sbdf->seg || gdev->bbn != sbdf->bus)
+ return FALSE;
+
+ gdev_node = gdev->child;
+ sbdf_node = sbdf->child;
+
+ /* Compare dev and func */
+ while (gdev_node) {
+ if (!sbdf_node)
+ return FALSE;
+ if (gdev_node->dev != sbdf_node->dev ||
+ gdev_node->func != sbdf_node->func)
+ return FALSE;
+ gdev_node = gdev_node->child;
+ sbdf_node = sbdf_node->child;
+ }
+ return TRUE;
+}
+
+/* Get sbdf from device */
+static int pci_get_sbdf_from_pcidev(
+ struct pci_dev *dev, struct pcidev_sbdf *sbdf)
+{
+ struct pcidev_sbdf_node *node;
+
+ if (!dev)
+ return FALSE;
+
+ for(;;) {
+ node = kmalloc(sizeof(*node), GFP_KERNEL);
+ if (!node) {
+ printk(KERN_ERR "PCI: Failed to allocate memory.\n");
+ goto err_end;
+ }
+ memset(node, 0, sizeof(*node));
+ node->dev = PCI_SLOT(dev->devfn);
+ node->func = PCI_FUNC(dev->devfn);
+
+ if (!sbdf->child)
+ sbdf->child = node;
+ else {
+ node->child = sbdf->child;
+ sbdf->child = node;
+ }
+ if (!dev->bus)
+ goto err_end;
+ if (!dev->bus->self)
+ break;
+ dev = dev->bus->self;
+ }
+ if (sscanf(dev->dev.bus_id, "%04x:%02x", &sbdf->seg, &sbdf->bus) != 2)
+ goto err_end;
+ return TRUE;
+
+err_end:
+ pci_free_sbdf(sbdf);
+ return FALSE;
+}
+
+/* Is PCI device belongs to the subtree of the guestdev parameter */
+int pci_is_guestdev(struct pci_dev *dev)
+{
+ struct guestdev *gdev;
+ struct pcidev_sbdf sbdf;
+ struct list_head *head;
+ int result;
+
+ if (!dev)
+ return FALSE;
+ memset(&sbdf, 0 ,sizeof(sbdf));
+ if (!pci_get_sbdf_from_pcidev(dev, &sbdf))
+ return FALSE;
+
+ result = FALSE;
+ list_for_each(head, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ if (pci_sbdf_in_guestdev_sub_tree(gdev, &sbdf)) {
+ result = TRUE;
+ break;
+ }
+ }
+ pci_free_sbdf(&sbdf);
+ return result;
+}
+EXPORT_SYMBOL(pci_is_guestdev);
+
+static int __init pci_set_reassign_resources(char *str)
+{
+ reassign_resources = 1;
+
+ return 1;
+}
+
+__setup("reassign_resources", pci_set_reassign_resources);
+
+int pci_is_guestdev_to_reassign(struct pci_dev *dev)
+{
+ if (reassign_resources)
+ return pci_is_guestdev(dev);
+ return FALSE;
+}
+EXPORT_SYMBOL(pci_is_guestdev_to_reassign);
+
+/* Check whether the guestdev exists under the pci root bus */
+static int __init pci_check_guestdev_path_exists(
+ struct guestdev *gdev, struct pci_bus *bus)
+{
+ struct guestdev_node *node;
+ struct pci_dev *dev;
+
+ node = gdev->child;
+ while (node) {
+ if (!bus)
+ return FALSE;
+ dev = pci_get_slot(bus, PCI_DEVFN(node->dev, node->func));
+ if (!dev) {
+ pci_dev_put(dev);
+ return FALSE;
+ }
+ bus = dev->subordinate;
+ node = node->child;
+ pci_dev_put(dev);
+ }
+ return TRUE;
+}
+
+/* Check whether the guestdev exists in the PCI device tree */
+static int __init pci_check_guestdev_exists(void)
+{
+ struct list_head *head;
+ struct guestdev *gdev;
+ int seg, bbn;
+ struct pci_bus *bus;
+ char path_str[PATH_STR_MAX];
+
+ list_for_each(head, &guestdev_list) {
+ gdev = list_entry(head, struct guestdev, root_list);
+ if (gdev->seg == INVALID_SEG ||
+ gdev->bbn == INVALID_BBN) {
+ if (acpi_pci_get_root_seg_bbn(gdev->hid,
+ gdev->uid, &seg, &bbn)) {
+ gdev->seg = seg;
+ gdev->bbn = bbn;
+ } else {
+ pci_make_guestdev_path_str(gdev, path_str,
+ PATH_STR_MAX);
+ printk(KERN_INFO
+ "PCI: Device does not exist. %s\n",
+ path_str);
+ continue;
+ }
+ }
+
+ bus = pci_find_bus(gdev->seg, gdev->bbn);
+ if (!bus || !pci_check_guestdev_path_exists(gdev, bus)) {
+ pci_make_guestdev_path_str(gdev, path_str,
+ PATH_STR_MAX);
+ printk(KERN_INFO
+ "PCI: Device does not exist. %s\n", path_str);
+ }
+ }
+ return 0;
+}
+
+fs_initcall(pci_check_guestdev_exists);
+
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/pci.h
--- a/drivers/pci/pci.h Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/pci/pci.h Wed Jan 07 12:21:54 2009 +0900
@@ -100,8 +100,12 @@ pci_match_one_device(const struct pci_de
}
#ifdef CONFIG_PCI_REASSIGN
-extern int is_reassigndev(struct pci_dev *dev);
+extern int pci_is_reassigndev(struct pci_dev *dev);
extern void pci_disable_bridge_window(struct pci_dev *dev);
#else
-#define is_reassigndev(dev) 0
+#define pci_is_reassigndev(dev) 0
#endif
+
+#ifdef CONFIG_PCI_GUESTDEV
+int pci_is_guestdev_to_reassign(struct pci_dev *dev);
+#endif /* CONFIG_PCI_GUESTDEV */
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/quirks.c
--- a/drivers/pci/quirks.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/pci/quirks.c Wed Jan 07 12:21:54 2009 +0900
@@ -36,7 +36,7 @@ static void __devinit quirk_release_reso
int i;
struct resource *r;
- if (is_reassigndev(dev)) {
+ if (pci_is_reassigndev(dev)) {
if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL &&
(dev->class >> 8) == PCI_CLASS_BRIDGE_HOST) {
/* PCI Host Bridge isn't a target device */
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/reassigndev.c
--- a/drivers/pci/reassigndev.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/pci/reassigndev.c Wed Jan 07 12:21:54 2009 +0900
@@ -26,20 +26,27 @@
static char param_reassigndev[REASSIGNDEV_PARAM_MAX] = {0};
-static int __init reassigndev_setup(char *str)
+static int __init pci_reassigndev_setup(char *str)
{
strncpy(param_reassigndev, str, REASSIGNDEV_PARAM_MAX);
param_reassigndev[REASSIGNDEV_PARAM_MAX - 1] = '\0';
return 1;
}
-__setup("reassigndev=", reassigndev_setup);
+__setup("reassigndev=", pci_reassigndev_setup);
-int is_reassigndev(struct pci_dev *dev)
+int pci_is_reassigndev(struct pci_dev *dev)
{
char dev_str[TOKEN_MAX+1];
int seg, bus, slot, func;
int len;
char *p, *next_str;
+ int result;
+
+#ifdef CONFIG_PCI_GUESTDEV
+ result = pci_is_guestdev_to_reassign(dev);
+ if (result)
+ return result;
+#endif /* CONFIG_PCI_GUESTDEV */
p = param_reassigndev;
for (; p; p = next_str + 1) {
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/setup-bus.c
--- a/drivers/pci/setup-bus.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/pci/setup-bus.c Wed Jan 07 12:21:54 2009 +0900
@@ -345,7 +345,7 @@ pbus_size_mem(struct pci_bus *bus, unsig
list_for_each_entry(dev, &bus->devices, bus_list) {
int i;
- int reassign = is_reassigndev(dev);
+ int reassign = pci_is_reassigndev(dev);
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r = &dev->resource[i];
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/pci/setup-res.c
--- a/drivers/pci/setup-res.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/pci/setup-res.c Wed Jan 07 12:21:54 2009 +0900
@@ -138,7 +138,7 @@ int pci_assign_resource(struct pci_dev *
struct resource *res = dev->resource + resno;
resource_size_t size, min, align;
int ret;
- int reassigndev = is_reassigndev(dev);
+ int reassigndev = pci_is_reassigndev(dev);
size = res->end - res->start + 1;
min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;
@@ -234,7 +234,7 @@ pdev_sort_resources(struct pci_dev *dev,
pdev_sort_resources(struct pci_dev *dev, struct resource_list *head)
{
int i;
- int reassigndev = is_reassigndev(dev);
+ int reassigndev = pci_is_reassigndev(dev);
for (i = 0; i < PCI_NUM_RESOURCES; i++) {
struct resource *r;
@@ -271,7 +271,7 @@ pdev_sort_resources(struct pci_dev *dev,
ln->res->start;
if ((idx < PCI_BRIDGE_RESOURCES) &&
(ln->res->flags & IORESOURCE_MEM) &&
- is_reassigndev(ln->dev))
+ pci_is_reassigndev(ln->dev))
align = ALIGN(align, PAGE_SIZE);
}
if (r_align > align) {
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/xen/evtchn/evtchn.c
--- a/drivers/xen/evtchn/evtchn.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/xen/evtchn/evtchn.c Wed Jan 07 12:21:54 2009 +0900
@@ -497,20 +497,22 @@ static int __cpuinit evtchn_cpu_notify(s
{
int hotcpu = (unsigned long)hcpu;
cpumask_t map = cpu_online_map;
- int port, newcpu;
+ int i, j, newcpu;
struct per_user_data *u;
switch (action) {
case CPU_DOWN_PREPARE:
cpu_clear(hotcpu, map);
spin_lock_irq(&port_user_lock);
- for (port = 0; port < NR_EVENT_CHANNELS; port++) {
- if ((u = port_user[port]) != NULL &&
- u->bind_cpu == hotcpu &&
- (newcpu = next_bind_cpu(map)) < NR_CPUS) {
- rebind_evtchn_to_cpu(port, newcpu);
- u->bind_cpu = newcpu;
- }
+ for (i = 0; i < NR_EVENT_CHANNELS; i++) {
+ u = port_user[i];
+ if ((u == NULL) || (u->bind_cpu != hotcpu))
+ continue;
+ newcpu = next_bind_cpu(map);
+ for (j = i; j < NR_EVENT_CHANNELS; j++)
+ if (port_user[j] == u)
+ rebind_evtchn_to_cpu(j, newcpu);
+ u->bind_cpu = newcpu;
}
spin_unlock_irq(&port_user_lock);
break;
diff -r 79bf5894b3f9 -r 28acedb66302 drivers/xen/pciback/pci_stub.c
--- a/drivers/xen/pciback/pci_stub.c Mon Jan 05 14:13:49 2009 +0900
+++ b/drivers/xen/pciback/pci_stub.c Wed Jan 07 12:21:54 2009 +0900
@@ -427,6 +427,16 @@ static int __devinit pcistub_probe(struc
dev_info(&dev->dev, "seizing device\n");
err = pcistub_seize(dev);
+#ifdef CONFIG_PCI_GUESTDEV
+ } else if (dev->hdr_type == PCI_HEADER_TYPE_NORMAL) {
+ if (!pci_is_guestdev(dev)) {
+ err = -ENODEV;
+ goto out;
+ }
+
+ dev_info(&dev->dev, "seizing device\n");
+ err = pcistub_seize(dev);
+#endif /* CONFIG_PCI_GUESTDEV */
} else
/* Didn't find the device */
err = -ENODEV;
diff -r 79bf5894b3f9 -r 28acedb66302 include/acpi/acpi_bus.h
--- a/include/acpi/acpi_bus.h Mon Jan 05 14:13:49 2009 +0900
+++ b/include/acpi/acpi_bus.h Wed Jan 07 12:21:54 2009 +0900
@@ -359,6 +359,16 @@ acpi_handle acpi_get_pci_rootbridge_hand
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int, unsigned int);
#define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->firmware_data))
+#define ACPI_DEVICE_ATTR(_name,_mode,_show,_store) \
+static struct acpi_device_attribute acpi_device_attr_##_name = \
+ __ATTR(_name, _mode, _show, _store)
+
+struct acpi_device_attribute {
+ struct attribute attr;
+ ssize_t(*show) (struct acpi_device *, char *);
+ ssize_t(*store) (struct acpi_device *, const char *, size_t);
+};
+
#endif /* CONFIG_ACPI */
#endif /*__ACPI_BUS_H__*/
diff -r 79bf5894b3f9 -r 28acedb66302 include/asm-x86_64/setup.h
--- a/include/asm-x86_64/setup.h Mon Jan 05 14:13:49 2009 +0900
+++ b/include/asm-x86_64/setup.h Wed Jan 07 12:21:54 2009 +0900
@@ -1,6 +1,6 @@
#ifndef _x8664_SETUP_H
#define _x8664_SETUP_H
-#define COMMAND_LINE_SIZE 256
+#define COMMAND_LINE_SIZE 1024
#endif
diff -r 79bf5894b3f9 -r 28acedb66302 include/linux/acpi.h
--- a/include/linux/acpi.h Mon Jan 05 14:13:49 2009 +0900
+++ b/include/linux/acpi.h Wed Jan 07 12:21:54 2009 +0900
@@ -406,6 +406,7 @@ void acpi_table_print (struct acpi_table
void acpi_table_print (struct acpi_table_header *header, unsigned long
phys_addr);
void acpi_table_print_madt_entry (acpi_table_entry_header *madt);
void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
+int acpi_pci_get_root_seg_bbn(char *hid, char *uid, int *seg, int *bbn);
/* the following four functions are architecture-dependent */
#ifdef CONFIG_HAVE_ARCH_PARSE_SRAT
diff -r 79bf5894b3f9 -r 28acedb66302 include/linux/pci.h
--- a/include/linux/pci.h Mon Jan 05 14:13:49 2009 +0900
+++ b/include/linux/pci.h Wed Jan 07 12:21:54 2009 +0900
@@ -804,5 +804,9 @@ extern int pci_pci_problems;
#define PCIPCI_VSFX 16
#define PCIPCI_ALIMAGIK 32
+#ifdef CONFIG_PCI_GUESTDEV
+int pci_is_guestdev(struct pci_dev *dev);
+#endif /* CONFIG_PCI_GUESTDEV */
+
#endif /* __KERNEL__ */
#endif /* LINUX_PCI_H */
_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog
|
Home