X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpci%2Fpci-sysfs.c;h=a9c7d41d28d1b1c7e890d2b0ab833557ed2429d9;hb=e0ff8aa1acd079b70e796571917ae0449b7c465b;hp=6ca0061137a6937891fb1757699e010abec9d688;hpb=f7f1b0f1e2fbadeab12d24236000e778aa9b1ead;p=linux-2.6.git

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 6ca006113..a9c7d41d2 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -15,7 +15,6 @@
  */
 
 
-#include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/stat.h>
@@ -29,7 +28,7 @@ static int sysfs_initialized;	/* = 0 */
 /* show configuration fields */
 #define pci_config_attr(field, format_string)				\
 static ssize_t								\
-field##_show(struct device *dev, char *buf)				\
+field##_show(struct device *dev, struct device_attribute *attr, char *buf)				\
 {									\
 	struct pci_dev *pdev;						\
 									\
@@ -43,37 +42,67 @@ pci_config_attr(subsystem_vendor, "0x%04x\n");
 pci_config_attr(subsystem_device, "0x%04x\n");
 pci_config_attr(class, "0x%06x\n");
 pci_config_attr(irq, "%u\n");
+pci_config_attr(is_enabled, "%u\n");
 
-static ssize_t local_cpus_show(struct device *dev, char *buf)
+static ssize_t broken_parity_status_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	return sprintf (buf, "%u\n", pdev->broken_parity_status);
+}
+
+static ssize_t broken_parity_status_store(struct device *dev,
+					  struct device_attribute *attr,
+					  const char *buf, size_t count)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	ssize_t consumed = -EINVAL;
+
+	if ((count > 0) && (*buf == '0' || *buf == '1')) {
+		pdev->broken_parity_status = *buf == '1' ? 1 : 0;
+		consumed = count;
+	}
+	return consumed;
+}
+
+static ssize_t local_cpus_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
 {		
-	cpumask_t mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
-	int len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
+	cpumask_t mask;
+	int len;
+
+	mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
+	len = cpumask_scnprintf(buf, PAGE_SIZE-2, mask);
 	strcat(buf,"\n"); 
 	return 1+len;
 }
 
 /* show resources */
 static ssize_t
-resource_show(struct device * dev, char * buf)
+resource_show(struct device * dev, struct device_attribute *attr, char * buf)
 {
 	struct pci_dev * pci_dev = to_pci_dev(dev);
 	char * str = buf;
 	int i;
 	int max = 7;
+	resource_size_t start, end;
 
 	if (pci_dev->subordinate)
 		max = DEVICE_COUNT_RESOURCE;
 
 	for (i = 0; i < max; i++) {
-		str += sprintf(str,"0x%016lx 0x%016lx 0x%016lx\n",
-			       pci_resource_start(pci_dev,i),
-			       pci_resource_end(pci_dev,i),
-			       pci_resource_flags(pci_dev,i));
+		struct resource *res =  &pci_dev->resource[i];
+		pci_resource_to_user(pci_dev, i, res, &start, &end);
+		str += sprintf(str,"0x%016llx 0x%016llx 0x%016llx\n",
+			       (unsigned long long)start,
+			       (unsigned long long)end,
+			       (unsigned long long)res->flags);
 	}
 	return (str - buf);
 }
 
-static ssize_t modalias_show(struct device *dev, char *buf)
+static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
 	struct pci_dev *pci_dev = to_pci_dev(dev);
 
@@ -83,6 +112,25 @@ static ssize_t modalias_show(struct device *dev, char *buf)
 		       (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8),
 		       (u8)(pci_dev->class));
 }
+static ssize_t
+is_enabled_store(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t count)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	/* this can crash the machine when done on the "wrong" device */
+	if (!capable(CAP_SYS_ADMIN))
+		return count;
+
+	if (*buf == '0')
+		pci_disable_device(pdev);
+
+	if (*buf == '1')
+		pci_enable_device(pdev);
+
+	return count;
+}
+
 
 struct device_attribute pci_dev_attrs[] = {
 	__ATTR_RO(resource),
@@ -94,6 +142,9 @@ struct device_attribute pci_dev_attrs[] = {
 	__ATTR_RO(irq),
 	__ATTR_RO(local_cpus),
 	__ATTR_RO(modalias),
+	__ATTR(enable, 0600, is_enabled_show, is_enabled_store),
+	__ATTR(broken_parity_status,(S_IRUGO|S_IWUSR),
+		broken_parity_status_show,broken_parity_status_store),
 	__ATTR_NULL,
 };
 
@@ -123,7 +174,7 @@ pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 
 	if ((off & 1) && size) {
 		u8 val;
-		pci_read_config_byte(dev, off, &val);
+		pci_user_read_config_byte(dev, off, &val);
 		data[off - init_off] = val;
 		off++;
 		size--;
@@ -131,7 +182,7 @@ pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 
 	if ((off & 3) && size > 2) {
 		u16 val;
-		pci_read_config_word(dev, off, &val);
+		pci_user_read_config_word(dev, off, &val);
 		data[off - init_off] = val & 0xff;
 		data[off - init_off + 1] = (val >> 8) & 0xff;
 		off += 2;
@@ -140,7 +191,7 @@ pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 
 	while (size > 3) {
 		u32 val;
-		pci_read_config_dword(dev, off, &val);
+		pci_user_read_config_dword(dev, off, &val);
 		data[off - init_off] = val & 0xff;
 		data[off - init_off + 1] = (val >> 8) & 0xff;
 		data[off - init_off + 2] = (val >> 16) & 0xff;
@@ -151,7 +202,7 @@ pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 
 	if (size >= 2) {
 		u16 val;
-		pci_read_config_word(dev, off, &val);
+		pci_user_read_config_word(dev, off, &val);
 		data[off - init_off] = val & 0xff;
 		data[off - init_off + 1] = (val >> 8) & 0xff;
 		off += 2;
@@ -160,7 +211,7 @@ pci_read_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 
 	if (size > 0) {
 		u8 val;
-		pci_read_config_byte(dev, off, &val);
+		pci_user_read_config_byte(dev, off, &val);
 		data[off - init_off] = val;
 		off++;
 		--size;
@@ -185,7 +236,7 @@ pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 	}
 	
 	if ((off & 1) && size) {
-		pci_write_config_byte(dev, off, data[off - init_off]);
+		pci_user_write_config_byte(dev, off, data[off - init_off]);
 		off++;
 		size--;
 	}
@@ -193,7 +244,7 @@ pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 	if ((off & 3) && size > 2) {
 		u16 val = data[off - init_off];
 		val |= (u16) data[off - init_off + 1] << 8;
-                pci_write_config_word(dev, off, val);
+                pci_user_write_config_word(dev, off, val);
                 off += 2;
                 size -= 2;
         }
@@ -203,7 +254,7 @@ pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 		val |= (u32) data[off - init_off + 1] << 8;
 		val |= (u32) data[off - init_off + 2] << 16;
 		val |= (u32) data[off - init_off + 3] << 24;
-		pci_write_config_dword(dev, off, val);
+		pci_user_write_config_dword(dev, off, val);
 		off += 4;
 		size -= 4;
 	}
@@ -211,13 +262,13 @@ pci_write_config(struct kobject *kobj, char *buf, loff_t off, size_t count)
 	if (size >= 2) {
 		u16 val = data[off - init_off];
 		val |= (u16) data[off - init_off + 1] << 8;
-		pci_write_config_word(dev, off, val);
+		pci_user_write_config_word(dev, off, val);
 		off += 2;
 		size -= 2;
 	}
 
 	if (size) {
-		pci_write_config_byte(dev, off, data[off - init_off]);
+		pci_user_write_config_byte(dev, off, data[off - init_off]);
 		off++;
 		--size;
 	}
@@ -313,8 +364,21 @@ pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
 						       struct device, kobj));
 	struct resource *res = (struct resource *)attr->private;
 	enum pci_mmap_state mmap_type;
+	resource_size_t start, end;
+	int i;
 
-	vma->vm_pgoff += res->start >> PAGE_SHIFT;
+	for (i = 0; i < PCI_ROM_RESOURCE; i++)
+		if (res == &pdev->resource[i])
+			break;
+	if (i >= PCI_ROM_RESOURCE)
+		return -ENODEV;
+
+	/* pci_mmap_page_range() expects the same kind of entry as coming
+	 * from /proc/bus/pci/ which is a "user visible" value. If this is
+	 * different from the resource itself, arch will do necessary fixup.
+	 */
+	pci_resource_to_user(pdev, i, res, &start, &end);
+	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);
@@ -339,16 +403,17 @@ pci_create_resource_files(struct pci_dev *pdev)
 		if (!pci_resource_len(pdev, i))
 			continue;
 
-		res_attr = kmalloc(sizeof(*res_attr) + 10, GFP_ATOMIC);
+		/* allocate attribute structure, piggyback attribute name */
+		res_attr = kzalloc(sizeof(*res_attr) + 10, GFP_ATOMIC);
 		if (res_attr) {
-			memset(res_attr, 0, sizeof(*res_attr) + 10);
+			char *res_attr_name = (char *)(res_attr + 1);
+
 			pdev->res_attr[i] = res_attr;
-			/* Allocated above after the res_attr struct */
-			res_attr->attr.name = (char *)(res_attr + 1);
-			sprintf(res_attr->attr.name, "resource%d", i);
-			res_attr->size = pci_resource_len(pdev, i);
+			sprintf(res_attr_name, "resource%d", i);
+			res_attr->attr.name = res_attr_name;
 			res_attr->attr.mode = S_IRUSR | S_IWUSR;
 			res_attr->attr.owner = THIS_MODULE;
+			res_attr->size = pci_resource_len(pdev, i);
 			res_attr->mmap = pci_mmap_resource;
 			res_attr->private = &pdev->resource[i];
 			sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
@@ -480,9 +545,8 @@ int pci_create_sysfs_dev_files (struct pci_dev *pdev)
 	if (pci_resource_len(pdev, PCI_ROM_RESOURCE)) {
 		struct bin_attribute *rom_attr;
 		
-		rom_attr = kmalloc(sizeof(*rom_attr), GFP_ATOMIC);
+		rom_attr = kzalloc(sizeof(*rom_attr), GFP_ATOMIC);
 		if (rom_attr) {
-			memset(rom_attr, 0x00, sizeof(*rom_attr));
 			pdev->rom_attr = rom_attr;
 			rom_attr->size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
 			rom_attr->attr.name = "rom";
@@ -507,6 +571,9 @@ int pci_create_sysfs_dev_files (struct pci_dev *pdev)
  */
 void pci_remove_sysfs_dev_files(struct pci_dev *pdev)
 {
+	if (!sysfs_initialized)
+		return;
+
 	if (pdev->cfg_size < 4096)
 		sysfs_remove_bin_file(&pdev->dev.kobj, &pci_config_attr);
 	else