Re: PCI Cleanup

From: Hanna Linder (hannal@us.ibm.com)
Date: Wed Aug 21 2002 - 17:14:23 EST


Included is the snia64 portion of the ia64 port of the
pci_ops structure cleanup change that Matt Dobson
originally did for i386.

Thanks to David Mosberger for sending me the 2.5.30
version of the ia64 port I have been able to compile
this patch and the previous one to verify they compile.

This applies cleanly to bk://linuxusb.bkbits.net/pci_hp-2.5

Hanna

---------
# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.558 -> 1.559
# arch/ia64/sn/io/pci.c 1.3 -> 1.4
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/08/21 hlinder@w-hlinder.beaverton.ibm.com 1.559
# Port to ia64 of pci_ops cleanup
# --------------------------------------------
#
diff -Nru a/arch/ia64/sn/io/pci.c b/arch/ia64/sn/io/pci.c
--- a/arch/ia64/sn/io/pci.c Wed Aug 21 13:49:06 2002
+++ b/arch/ia64/sn/io/pci.c Wed Aug 21 13:49:06 2002
@@ -44,22 +44,21 @@
 extern devfs_handle_t devfn_to_vertex(unsigned char bus, unsigned char devfn);
 
 /*
- * snia64_read_config_byte - Read a byte from the config area of the device.
+ * snia64_read - Read from the config area of the device.
  */
-static int snia64_read_config_byte (struct pci_dev *dev,
- int where, unsigned char *val)
+static int snia64_read (struct pci_bus *bus, unsigned char devfn,
+ int where, int size, unsigned char *val)
 {
         unsigned long res = 0;
- unsigned size = 1;
         devfs_handle_t device_vertex;
 
- if ( (dev == (struct pci_dev *)0) || (val == (unsigned char *)0) ) {
+ if ( (bus->dev == (struct pci_dev *)0) || (val == (unsigned char *)0) ) {
                 return PCIBIOS_DEVICE_NOT_FOUND;
         }
- device_vertex = devfn_to_vertex(dev->bus->number, dev->devfn);
+ device_vertex = devfn_to_vertex(bus->number, devfn);
         if (!device_vertex) {
                 DBG("%s : nonexistent device: bus= 0x%x slot= 0x%x func= 0x%x\n",
- __FUNCTION__, dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+ __FUNCTION__, bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
                 return(-1);
         }
         res = pciio_config_get(device_vertex, (unsigned) where, size);
@@ -68,160 +67,38 @@
 }
 
 /*
- * snia64_read_config_word - Read 2 bytes from the config area of the device.
+ * snia64_write - Writes to the config area of the device.
  */
-static int snia64_read_config_word (struct pci_dev *dev,
- int where, unsigned short *val)
+static int snia64_write (struct pci_bus *bus, unsigned char devfn,
+ int where, int size, unsigned char val)
 {
- unsigned long res = 0;
- unsigned size = 2; /* 2 bytes */
- devfs_handle_t device_vertex;
-
- if ( (dev == (struct pci_dev *)0) || (val == (unsigned short *)0) ) {
- return PCIBIOS_DEVICE_NOT_FOUND;
- }
- device_vertex = devfn_to_vertex(dev->bus->number, dev->devfn);
- if (!device_vertex) {
- DBG("%s : nonexistent device: bus= 0x%x slot= 0x%x func= 0x%x\n",
- __FUNCTION__, dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
- return(-1);
- }
- res = pciio_config_get(device_vertex, (unsigned) where, size);
- *val = (unsigned short) res;
- return PCIBIOS_SUCCESSFUL;
-}
-
-/*
- * snia64_read_config_dword - Read 4 bytes from the config area of the device.
- */
-static int snia64_read_config_dword (struct pci_dev *dev,
- int where, unsigned int *val)
-{
- unsigned long res = 0;
- unsigned size = 4; /* 4 bytes */
         devfs_handle_t device_vertex;
 
- if (where & 3) {
- return PCIBIOS_BAD_REGISTER_NUMBER;
- }
- if ( (dev == (struct pci_dev *)0) || (val == (unsigned int *)0) ) {
- return PCIBIOS_DEVICE_NOT_FOUND;
- }
-
- device_vertex = devfn_to_vertex(dev->bus->number, dev->devfn);
- if (!device_vertex) {
- DBG("%s : nonexistent device: bus= 0x%x slot= 0x%x func= 0x%x\n",
- __FUNCTION__, dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
- return(-1);
- }
- res = pciio_config_get(device_vertex, (unsigned) where, size);
- *val = (unsigned int) res;
- return PCIBIOS_SUCCESSFUL;
-}
-
-/*
- * snia64_write_config_byte - Writes 1 byte to the config area of the device.
- */
-static int snia64_write_config_byte (struct pci_dev *dev,
- int where, unsigned char val)
-{
- devfs_handle_t device_vertex;
-
- if ( dev == (struct pci_dev *)0 ) {
- return PCIBIOS_DEVICE_NOT_FOUND;
- }
- /*
- * if it's an IOC3 then we bail out, we special
- * case them with pci_fixup_ioc3
- */
- if (dev->vendor == PCI_VENDOR_ID_SGI &&
- dev->device == PCI_DEVICE_ID_SGI_IOC3 )
- return PCIBIOS_SUCCESSFUL;
-
- device_vertex = devfn_to_vertex(dev->bus->number, dev->devfn);
- if (!device_vertex) {
- DBG("%s : nonexistent device: bus= 0x%x slot= 0x%x func= 0x%x\n",
- __FUNCTION__, dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
- return(-1);
- }
- pciio_config_set( device_vertex, (unsigned)where, 1, (uint64_t) val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-/*
- * snia64_write_config_word - Writes 2 bytes to the config area of the device.
- */
-static int snia64_write_config_word (struct pci_dev *dev,
- int where, unsigned short val)
-{
- devfs_handle_t device_vertex = NULL;
-
- if (where & 1) {
- return PCIBIOS_BAD_REGISTER_NUMBER;
- }
- if ( dev == (struct pci_dev *)0 ) {
- return PCIBIOS_DEVICE_NOT_FOUND;
- }
- /*
- * if it's an IOC3 then we bail out, we special
- * case them with pci_fixup_ioc3
- */
- if (dev->vendor == PCI_VENDOR_ID_SGI &&
- dev->device == PCI_DEVICE_ID_SGI_IOC3)
- return PCIBIOS_SUCCESSFUL;
-
- device_vertex = devfn_to_vertex(dev->bus->number, dev->devfn);
- if (!device_vertex) {
- DBG("%s : nonexistent device: bus= 0x%x slot= 0x%x func= 0x%x\n",
- __FUNCTION__, dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
- return(-1);
- }
- pciio_config_set( device_vertex, (unsigned)where, 2, (uint64_t) val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-/*
- * snia64_write_config_dword - Writes 4 bytes to the config area of the device.
- */
-static int snia64_write_config_dword (struct pci_dev *dev,
- int where, unsigned int val)
-{
- devfs_handle_t device_vertex;
-
- if (where & 3) {
- return PCIBIOS_BAD_REGISTER_NUMBER;
- }
- if ( dev == (struct pci_dev *)0 ) {
+ if ( bus->dev == (struct pci_dev *)0 ) {
                 return PCIBIOS_DEVICE_NOT_FOUND;
         }
         /*
          * if it's an IOC3 then we bail out, we special
          * case them with pci_fixup_ioc3
          */
- if (dev->vendor == PCI_VENDOR_ID_SGI &&
- dev->device == PCI_DEVICE_ID_SGI_IOC3)
+ if (bus->dev->vendor == PCI_VENDOR_ID_SGI &&
+ bus->dev->device == PCI_DEVICE_ID_SGI_IOC3 )
                 return PCIBIOS_SUCCESSFUL;
 
- device_vertex = devfn_to_vertex(dev->bus->number, dev->devfn);
+ device_vertex = devfn_to_vertex(bus->number, devfn);
         if (!device_vertex) {
                 DBG("%s : nonexistent device: bus= 0x%x slot= 0x%x func= 0x%x\n",
- __FUNCTION__, dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+ __FUNCTION__, bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
                 return(-1);
         }
- pciio_config_set( device_vertex, (unsigned)where, 4, (uint64_t) val);
+ pciio_config_set( device_vertex, (unsigned)where, size, (uint64_t) val);
 
         return PCIBIOS_SUCCESSFUL;
 }
 
 static struct pci_ops snia64_pci_ops = {
- snia64_read_config_byte,
- snia64_read_config_word,
- snia64_read_config_dword,
- snia64_write_config_byte,
- snia64_write_config_word,
- snia64_write_config_dword
+ .read = snia64_read,
+ .write = snia64_write,
 };
 
 /*

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Fri Aug 23 2002 - 22:00:23 EST