Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 292 insertions, 0 deletions

diff --git a/drivers/pnp/pnpbios/proc.c b/drivers/pnp/pnpbios/proc.c
new file mode 100644
index 0000000..6bb8e19
--- /dev/null
+++ b/drivers/pnp/pnpbios/proc.c
@@ -0,0 +1,292 @@
+/*
+ * /proc/bus/pnp interface for Plug and Play devices
+ *
+ * Written by David Hinds, dahinds@users.sourceforge.net
+ * Modified by Thomas Hood
+ *
+ * The .../devices and .../<node> and .../boot/<node> files are
+ * utilized by the lspnp and setpnp utilities, supplied with the
+ * pcmcia-cs package.
+ *     http://pcmcia-cs.sourceforge.net
+ *
+ * The .../escd file is utilized by the lsescd utility written by
+ * Gunther Mayer.
+ *     http://home.t-online.de/home/gunther.mayer/lsescd
+ *
+ * The .../legacy_device_resources file is not used yet.
+ *
+ * The other files are human-readable.
+ */
+
+//#include <pcmcia/config.h>
+//#include <pcmcia/k_compat.h>
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/pnpbios.h>
+#include <linux/init.h>
+
+#include <asm/uaccess.h>
+
+#include "pnpbios.h"
+
+static struct proc_dir_entry *proc_pnp = NULL;
+static struct proc_dir_entry *proc_pnp_boot = NULL;
+
+static int proc_read_pnpconfig(char *buf, char **start, off_t pos,
+                               int count, int *eof, void *data)
+{
+	struct pnp_isa_config_struc pnps;
+
+	if (pnp_bios_isapnp_config(&pnps))
+		return -EIO;
+	return snprintf(buf, count,
+		"structure_revision %d\n"
+		"number_of_CSNs %d\n"
+		"ISA_read_data_port 0x%x\n",
+		pnps.revision,
+		pnps.no_csns,
+		pnps.isa_rd_data_port
+	);
+}
+
+static int proc_read_escdinfo(char *buf, char **start, off_t pos,
+                              int count, int *eof, void *data)
+{
+	struct escd_info_struc escd;
+
+	if (pnp_bios_escd_info(&escd))
+		return -EIO;
+	return snprintf(buf, count,
+		"min_ESCD_write_size %d\n"
+		"ESCD_size %d\n"
+		"NVRAM_base 0x%x\n",
+		escd.min_escd_write_size,
+		escd.escd_size,
+		escd.nv_storage_base
+	);
+}
+
+#define MAX_SANE_ESCD_SIZE (32*1024)
+static int proc_read_escd(char *buf, char **start, off_t pos,
+                          int count, int *eof, void *data)
+{
+	struct escd_info_struc escd;
+	char *tmpbuf;
+	int escd_size, escd_left_to_read, n;
+
+	if (pnp_bios_escd_info(&escd))
+		return -EIO;
+
+	/* sanity check */
+	if (escd.escd_size > MAX_SANE_ESCD_SIZE) {
+		printk(KERN_ERR "PnPBIOS: proc_read_escd: ESCD size reported by BIOS escd_info call is too great\n");
+		return -EFBIG;
+	}
+
+	tmpbuf = pnpbios_kmalloc(escd.escd_size, GFP_KERNEL);
+	if (!tmpbuf) return -ENOMEM;
+
+	if (pnp_bios_read_escd(tmpbuf, escd.nv_storage_base)) {
+		kfree(tmpbuf);
+		return -EIO;
+	}
+
+	escd_size = (unsigned char)(tmpbuf[0]) + (unsigned char)(tmpbuf[1])*256;
+
+	/* sanity check */
+	if (escd_size > MAX_SANE_ESCD_SIZE) {
+		printk(KERN_ERR "PnPBIOS: proc_read_escd: ESCD size reported by BIOS read_escd call is too great\n");
+		return -EFBIG;
+	}
+
+	escd_left_to_read = escd_size - pos;
+	if (escd_left_to_read < 0) escd_left_to_read = 0;
+	if (escd_left_to_read == 0) *eof = 1;
+	n = min(count,escd_left_to_read);
+	memcpy(buf, tmpbuf + pos, n);
+	kfree(tmpbuf);
+	*start = buf;
+	return n;
+}
+
+static int proc_read_legacyres(char *buf, char **start, off_t pos,
+                               int count, int *eof, void *data)
+{
+	/* Assume that the following won't overflow the buffer */
+	if (pnp_bios_get_stat_res(buf)) 
+		return -EIO;
+
+	return count;  // FIXME: Return actual length
+}
+
+static int proc_read_devices(char *buf, char **start, off_t pos,
+                             int count, int *eof, void *data)
+{
+	struct pnp_bios_node *node;
+	u8 nodenum;
+	char *p = buf;
+
+	if (pos >= 0xff)
+		return 0;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node) return -ENOMEM;
+
+	for (nodenum=pos; nodenum<0xff; ) {
+		u8 thisnodenum = nodenum;
+		/* 26 = the number of characters per line sprintf'ed */
+		if ((p - buf + 26) > count)
+			break;
+		if (pnp_bios_get_dev_node(&nodenum, PNPMODE_DYNAMIC, node))
+			break;
+		p += sprintf(p, "%02x\t%08x\t%02x:%02x:%02x\t%04x\n",
+			     node->handle, node->eisa_id,
+			     node->type_code[0], node->type_code[1],
+			     node->type_code[2], node->flags);
+		if (nodenum <= thisnodenum) {
+			printk(KERN_ERR "%s Node number 0x%x is out of sequence following node 0x%x. Aborting.\n", "PnPBIOS: proc_read_devices:", (unsigned int)nodenum, (unsigned int)thisnodenum);
+			*eof = 1;
+			break;
+		}
+	}
+	kfree(node);
+	if (nodenum == 0xff)
+		*eof = 1;
+	*start = (char *)((off_t)nodenum - pos);
+	return p - buf;
+}
+
+static int proc_read_node(char *buf, char **start, off_t pos,
+                          int count, int *eof, void *data)
+{
+	struct pnp_bios_node *node;
+	int boot = (long)data >> 8;
+	u8 nodenum = (long)data;
+	int len;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node) return -ENOMEM;
+	if (pnp_bios_get_dev_node(&nodenum, boot, node)) {
+		kfree(node);
+		return -EIO;
+	}
+	len = node->size - sizeof(struct pnp_bios_node);
+	memcpy(buf, node->data, len);
+	kfree(node);
+	return len;
+}
+
+static int proc_write_node(struct file *file, const char __user *buf,
+                           unsigned long count, void *data)
+{
+	struct pnp_bios_node *node;
+	int boot = (long)data >> 8;
+	u8 nodenum = (long)data;
+	int ret = count;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node)
+		return -ENOMEM;
+	if (pnp_bios_get_dev_node(&nodenum, boot, node)) {
+		ret = -EIO;
+		goto out;
+	}
+	if (count != node->size - sizeof(struct pnp_bios_node)) {
+		ret = -EINVAL;
+		goto out;
+	}
+	if (copy_from_user(node->data, buf, count)) {
+		ret = -EFAULT;
+		goto out;
+	}
+	if (pnp_bios_set_dev_node(node->handle, boot, node) != 0) {
+		ret = -EINVAL;
+		goto out;
+	}
+	ret = count;
+out:
+	kfree(node);
+	return ret;
+}
+
+int pnpbios_interface_attach_device(struct pnp_bios_node * node)
+{
+	char name[3];
+	struct proc_dir_entry *ent;
+
+	sprintf(name, "%02x", node->handle);
+
+	if (!proc_pnp)
+		return -EIO;
+	if ( !pnpbios_dont_use_current_config ) {
+		ent = create_proc_entry(name, 0, proc_pnp);
+		if (ent) {
+			ent->read_proc = proc_read_node;
+			ent->write_proc = proc_write_node;
+			ent->data = (void *)(long)(node->handle);
+		}
+	}
+
+	if (!proc_pnp_boot)
+		return -EIO;
+	ent = create_proc_entry(name, 0, proc_pnp_boot);
+	if (ent) {
+		ent->read_proc = proc_read_node;
+		ent->write_proc = proc_write_node;
+		ent->data = (void *)(long)(node->handle+0x100);
+		return 0;
+	}
+
+	return -EIO;
+}
+
+/*
+ * When this is called, pnpbios functions are assumed to
+ * work and the pnpbios_dont_use_current_config flag
+ * should already have been set to the appropriate value
+ */
+int __init pnpbios_proc_init( void )
+{
+	proc_pnp = proc_mkdir("pnp", proc_bus);
+	if (!proc_pnp)
+		return -EIO;
+	proc_pnp_boot = proc_mkdir("boot", proc_pnp);
+	if (!proc_pnp_boot)
+		return -EIO;
+	create_proc_read_entry("devices", 0, proc_pnp, proc_read_devices, NULL);
+	create_proc_read_entry("configuration_info", 0, proc_pnp, proc_read_pnpconfig, NULL);
+	create_proc_read_entry("escd_info", 0, proc_pnp, proc_read_escdinfo, NULL);
+	create_proc_read_entry("escd", S_IRUSR, proc_pnp, proc_read_escd, NULL);
+	create_proc_read_entry("legacy_device_resources", 0, proc_pnp, proc_read_legacyres, NULL);
+
+	return 0;
+}
+
+void __exit pnpbios_proc_exit(void)
+{
+	int i;
+	char name[3];
+
+	if (!proc_pnp)
+		return;
+
+	for (i=0; i<0xff; i++) {
+		sprintf(name, "%02x", i);
+		if ( !pnpbios_dont_use_current_config )
+			remove_proc_entry(name, proc_pnp);
+		remove_proc_entry(name, proc_pnp_boot);
+	}
+	remove_proc_entry("legacy_device_resources", proc_pnp);
+	remove_proc_entry("escd", proc_pnp);
+	remove_proc_entry("escd_info", proc_pnp);
+	remove_proc_entry("configuration_info", proc_pnp);
+	remove_proc_entry("devices", proc_pnp);
+	remove_proc_entry("boot", proc_pnp);
+	remove_proc_entry("pnp", proc_bus);
+
+	return;
+}