patch-2.4.13 linux/drivers/i2o/i2o_pci.c

• Lines: 378
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.12/linux/drivers/i2o/i2o_pci.c
• Orig date: Mon Aug 27 12:41:41 2001

diff -u --recursive --new-file v2.4.12/linux/drivers/i2o/i2o_pci.c linux/drivers/i2o/i2o_pci.c
@@ -1,377 +0,0 @@
-/*
- *	Find I2O capable controllers on the PCI bus, and register/install
- *	them with the I2O layer
- *
- *	(C) Copyright 1999   Red Hat Software
- *	
- *	Written by Alan Cox, Building Number Three Ltd
- * 	Modified by Deepak Saxena <deepak@plexity.net>
- * 	Modified by Boji T Kannanthanam <boji.t.kannanthanam@intel.com>
- *
- *	This program is free software; you can redistribute it and/or
- *	modify it under the terms of the GNU General Public License
- * 	as published by the Free Software Foundation; either version
- *	2 of the License, or (at your option) any later version.
- *
- *	TODO:
- *		Support polled I2O PCI controllers. 
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/i2o.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_MTRR
-#include <asm/mtrr.h>
-#endif // CONFIG_MTRR
-
-#ifdef MODULE
-/*
- * Core function table
- * See <include/linux/i2o.h> for an explanation
- */
-static struct i2o_core_func_table *core;
-
-/* Core attach function */
-extern int i2o_pci_core_attach(struct i2o_core_func_table *);
-extern void i2o_pci_core_detach(void);
-#endif /* MODULE */
-
-/*
- *	Free bus specific resources
- */
-static void i2o_pci_dispose(struct i2o_controller *c)
-{
-	I2O_IRQ_WRITE32(c,0xFFFFFFFF);
-	if(c->bus.pci.irq > 0)
-		free_irq(c->bus.pci.irq, c);
-	iounmap(((u8 *)c->post_port)-0x40);
-
-#ifdef CONFIG_MTRR
-	if(c->bus.pci.mtrr_reg0 > 0)
-		mtrr_del(c->bus.pci.mtrr_reg0, 0, 0);
-	if(c->bus.pci.mtrr_reg1 > 0)
-		mtrr_del(c->bus.pci.mtrr_reg1, 0, 0);
-#endif
-}
-
-/*
- *	No real bus specific handling yet (note that later we will
- *	need to 'steal' PCI devices on i960 mainboards)
- */
- 
-static int i2o_pci_bind(struct i2o_controller *c, struct i2o_device *dev)
-{
-	MOD_INC_USE_COUNT;
-	return 0;
-}
-
-static int i2o_pci_unbind(struct i2o_controller *c, struct i2o_device *dev)
-{
-	MOD_DEC_USE_COUNT;
-	return 0;
-}
-
-/*
- * Bus specific enable/disable functions
- */
-static void i2o_pci_enable(struct i2o_controller *c)
-{
-	I2O_IRQ_WRITE32(c, 0);
-	c->enabled = 1;
-}
-
-static void i2o_pci_disable(struct i2o_controller *c)
-{
-	I2O_IRQ_WRITE32(c, 0xFFFFFFFF);
-	c->enabled = 0;
-}
-
-/*
- *	Bus specific interrupt handler
- */
- 
-static void i2o_pci_interrupt(int irq, void *dev_id, struct pt_regs *r)
-{
-	struct i2o_controller *c = dev_id;
-#ifdef MODULE
-	core->run_queue(c);
-#else
-	i2o_run_queue(c);
-#endif /* MODULE */
-}	
-
-/*
- *	Install a PCI (or in theory AGP) i2o controller
- *
- * TODO: Add support for polled controllers
- */
-int __init i2o_pci_install(struct pci_dev *dev)
-{
-	struct i2o_controller *c=kmalloc(sizeof(struct i2o_controller),
-						GFP_KERNEL);
-	u8 *mem;
-	u32 memptr = 0;
-	u32 size;
-	
-	int i;
-
-	if(c==NULL)
-	{
-		printk(KERN_ERR "i2o: Insufficient memory to add controller.\n");
-		return -ENOMEM;
-	}
-	memset(c, 0, sizeof(*c));
-
-	for(i=0; i<6; i++)
-	{
-		/* Skip I/O spaces */
-		if(!(pci_resource_flags(dev, i) & IORESOURCE_IO))
-		{
-			memptr = pci_resource_start(dev, i);
-			break;
-		}
-	}
-	
-	if(i==6)
-	{
-		printk(KERN_ERR "i2o: I2O controller has no memory regions defined.\n");
-		kfree(c);
-		return -EINVAL;
-	}
-	
-	size = dev->resource[i].end-dev->resource[i].start+1;	
-	/* Map the I2O controller */
-	
-	printk(KERN_INFO "i2o: PCI I2O controller at 0x%08X size=%d\n", memptr, size);
-	mem = ioremap(memptr, size);
-	if(mem==NULL)
-	{
-		printk(KERN_ERR "i2o: Unable to map controller.\n");
-		kfree(c);
-		return -EINVAL;
-	}
-
-	c->bus.pci.irq = -1;
-	c->bus.pci.queue_buggy = 0;
-	c->bus.pci.dpt = 0;
-	c->bus.pci.short_req = 0;
-	c->bus.pci.pdev = dev;
-
-	c->irq_mask = (volatile u32 *)(mem+0x34);
-	c->post_port = (volatile u32 *)(mem+0x40);
-	c->reply_port = (volatile u32 *)(mem+0x44);
-
-	c->mem_phys = memptr;
-	c->mem_offset = (u32)mem;
-	c->destructor = i2o_pci_dispose;
-	
-	c->bind = i2o_pci_bind;
-	c->unbind = i2o_pci_unbind;
-	c->bus_enable = i2o_pci_enable;
-	c->bus_disable = i2o_pci_disable;
-	
-	c->type = I2O_TYPE_PCI;
-
-	/*
-	 *	Cards that fall apart if you hit them with large I/O
-	 *	loads...
-	 */
-	 
-	if(dev->vendor == PCI_VENDOR_ID_NCR && dev->device == 0x0630)
-	{
-		c->bus.pci.short_req=1;
-		printk(KERN_INFO "I2O: Symbios FC920 workarounds activated.\n");
-	}
-	if(dev->subsystem_vendor == PCI_VENDOR_ID_PROMISE)
-	{
-		c->bus.pci.queue_buggy=1;
-		printk(KERN_INFO "I2O: Promise workarounds activated.\n");
-	}
-
-	/*
-	 *	Cards that go bananas if you quiesce them before you reset
-	 *	them
-	 */
-	 
-	if(dev->vendor == PCI_VENDOR_ID_DPT)
-		c->bus.pci.dpt=1;
-	
-	/* 
-	 * Enable Write Combining MTRR for IOP's memory region
-	 */
-#ifdef CONFIG_MTRR
-	c->bus.pci.mtrr_reg0 =
-		mtrr_add(c->mem_phys, size, MTRR_TYPE_WRCOMB, 1);
-/*
-* If it is an INTEL i960 I/O processor then set the first 64K to Uncacheable
-* since the region contains the Messaging unit which shouldn't be cached.
-*/
-	c->bus.pci.mtrr_reg1 = -1;
-	if(dev->vendor == PCI_VENDOR_ID_INTEL || dev->vendor == PCI_VENDOR_ID_DPT)
-	{
-		printk(KERN_INFO "I2O: MTRR workaround for Intel i960 processor\n"); 
-		c->bus.pci.mtrr_reg1 =	mtrr_add(c->mem_phys, 65536, MTRR_TYPE_UNCACHABLE, 1);
-		if(c->bus.pci.mtrr_reg1< 0)
-			printk(KERN_INFO "i2o_pci: Error in setting MTRR_TYPE_UNCACHABLE\n");
-	}
-
-#endif
-
-	I2O_IRQ_WRITE32(c,0xFFFFFFFF);
-
-#ifdef MODULE
-	i = core->install(c);
-#else
-	i = i2o_install_controller(c);
-#endif /* MODULE */
-	
-	if(i<0)
-	{
-		printk(KERN_ERR "i2o: Unable to install controller.\n");
-		kfree(c);
-		iounmap(mem);
-		return i;
-	}
-
-	c->bus.pci.irq = dev->irq;
-	if(c->bus.pci.irq)
-	{
-		i=request_irq(dev->irq, i2o_pci_interrupt, SA_SHIRQ,
-			c->name, c);
-		if(i<0)
-		{
-			printk(KERN_ERR "%s: unable to allocate interrupt %d.\n",
-				c->name, dev->irq);
-			c->bus.pci.irq = -1;
-#ifdef MODULE
-			core->delete(c);
-#else
-			i2o_delete_controller(c);
-#endif /* MODULE */	
-			iounmap(mem);
-			return -EBUSY;
-		}
-	}
-
-	printk(KERN_INFO "%s: Installed at IRQ%d\n", c->name, dev->irq);
-	I2O_IRQ_WRITE32(c,0x0);
-	c->enabled = 1;
-	return 0;	
-}
-
-int __init i2o_pci_scan(void)
-{
-	struct pci_dev *dev;
-	int count=0;
-	
-	printk(KERN_INFO "i2o: Checking for PCI I2O controllers...\n");
-
-	pci_for_each_dev(dev)	
-	{
-		if((dev->class>>8)!=PCI_CLASS_INTELLIGENT_I2O)
-			continue;
-		if((dev->class&0xFF)>1)
-		{
-			printk(KERN_INFO "i2o: I2O Controller found but does not support I2O 1.5 (skipping).\n");
-			continue;
-		}
-		if (pci_enable_device(dev))
-			continue;
-		printk(KERN_INFO "i2o: I2O controller on bus %d at %d.\n",
-			dev->bus->number, dev->devfn);
-		pci_set_master(dev);
-		if(i2o_pci_install(dev)==0)
-			count++;
-	}
-	if(count)
-		printk(KERN_INFO "i2o: %d I2O controller%s found and installed.\n", count,
-			count==1?"":"s");
-	return count?count:-ENODEV;
-}
-
-#ifdef I2O_HOTPLUG_SUPPORT
-/*
- * Activate a newly found PCI I2O controller
- * Not used now, but will be needed in future for
- * hot plug PCI support
- */
-static void i2o_pci_activate(i2o_controller * c)
-{
-	int i=0;
-	struct i2o_controller *c;
-	
-	if(c->type == I2O_TYPE_PCI)
-	{
-		I2O_IRQ_WRITE32(c,0);
-#ifdef MODULE
-		if(core->activate(c))
-#else
-		if(i2o_activate_controller(c))
-#endif /* MODULE */
-		{
-			printk("%s: Failed to initialize.\n", c->name);
-#ifdef MODULE
-			core->unlock(c);
-			core->delete(c);
-#else
-			i2o_unlock_controller(c);
-			i2o_delete_controller(c);
-#endif
-			continue;
-		}
-	}
-}
-#endif // I2O_HOTPLUG_SUPPORT
-
-#ifdef MODULE
-
-int i2o_pci_core_attach(struct i2o_core_func_table *table)
-{
-	MOD_INC_USE_COUNT;
-
-	core = table;
-
-	return i2o_pci_scan();
-}
-
-void i2o_pci_core_detach(void)
-{
-	core = NULL;
-
-	MOD_DEC_USE_COUNT;
-}
-
-int init_module(void)
-{
-	printk(KERN_INFO "Linux I2O PCI support (c) 1999 Red Hat Software.\n");
-	
-	core = NULL;
-
- 	return 0;
- 
-}
-
-void cleanup_module(void)
-{
-}
-
-EXPORT_SYMBOL(i2o_pci_core_attach);
-EXPORT_SYMBOL(i2o_pci_core_detach);
-
-MODULE_AUTHOR("Red Hat Software");
-MODULE_DESCRIPTION("I2O PCI Interface");
-
-#else
-void __init i2o_pci_init(void)
-{
-	printk(KERN_INFO "Linux I2O PCI support (c) 1999 Red Hat Software.\n");
-	i2o_pci_scan();
-}
-#endif