[deliverable/linux.git] / arch / sparc64 / kernel / pci_common.c

/* $Id: pci_common.c,v 1.29 2002/02/01 00:56:03 davem Exp $
 * pci_common.c: PCI controller common support.
 *
 * Copyright (C) 1999 David S. Miller (davem@redhat.com)
 */

#include <linux/string.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/device.h>

#include <asm/pbm.h>
#include <asm/prom.h>
#include <asm/of_device.h>

#include "pci_impl.h"

void pci_register_legacy_regions(struct resource *io_res,
				 struct resource *mem_res)
{
	struct resource *p;

	/* VGA Video RAM. */
	p = kzalloc(sizeof(*p), GFP_KERNEL);
	if (!p)
		return;

	p->name = "Video RAM area";
	p->start = mem_res->start + 0xa0000UL;
	p->end = p->start + 0x1ffffUL;
	p->flags = IORESOURCE_BUSY;
	request_resource(mem_res, p);

	p = kzalloc(sizeof(*p), GFP_KERNEL);
	if (!p)
		return;

	p->name = "System ROM";
	p->start = mem_res->start + 0xf0000UL;
	p->end = p->start + 0xffffUL;
	p->flags = IORESOURCE_BUSY;
	request_resource(mem_res, p);

	p = kzalloc(sizeof(*p), GFP_KERNEL);
	if (!p)
		return;

	p->name = "Video ROM";
	p->start = mem_res->start + 0xc0000UL;
	p->end = p->start + 0x7fffUL;
	p->flags = IORESOURCE_BUSY;
	request_resource(mem_res, p);
}

/* Generic helper routines for PCI error reporting. */
void pci_scan_for_target_abort(struct pci_controller_info *p,
			       struct pci_pbm_info *pbm,
			       struct pci_bus *pbus)
{
	struct pci_dev *pdev;
	struct pci_bus *bus;

	list_for_each_entry(pdev, &pbus->devices, bus_list) {
		u16 status, error_bits;

		pci_read_config_word(pdev, PCI_STATUS, &status);
		error_bits =
			(status & (PCI_STATUS_SIG_TARGET_ABORT |
				   PCI_STATUS_REC_TARGET_ABORT));
		if (error_bits) {
			pci_write_config_word(pdev, PCI_STATUS, error_bits);
			printk("PCI%d(PBM%c): Device [%s] saw Target Abort [%016x]\n",
			       p->index, ((pbm == &p->pbm_A) ? 'A' : 'B'),
			       pci_name(pdev), status);
		}
	}

	list_for_each_entry(bus, &pbus->children, node)
		pci_scan_for_target_abort(p, pbm, bus);
}

void pci_scan_for_master_abort(struct pci_controller_info *p,
			       struct pci_pbm_info *pbm,
			       struct pci_bus *pbus)
{
	struct pci_dev *pdev;
	struct pci_bus *bus;

	list_for_each_entry(pdev, &pbus->devices, bus_list) {
		u16 status, error_bits;

		pci_read_config_word(pdev, PCI_STATUS, &status);
		error_bits =
			(status & (PCI_STATUS_REC_MASTER_ABORT));
		if (error_bits) {
			pci_write_config_word(pdev, PCI_STATUS, error_bits);
			printk("PCI%d(PBM%c): Device [%s] received Master Abort [%016x]\n",
			       p->index, ((pbm == &p->pbm_A) ? 'A' : 'B'),
			       pci_name(pdev), status);
		}
	}

	list_for_each_entry(bus, &pbus->children, node)
		pci_scan_for_master_abort(p, pbm, bus);
}

void pci_scan_for_parity_error(struct pci_controller_info *p,
			       struct pci_pbm_info *pbm,
			       struct pci_bus *pbus)
{
	struct pci_dev *pdev;
	struct pci_bus *bus;

	list_for_each_entry(pdev, &pbus->devices, bus_list) {
		u16 status, error_bits;

		pci_read_config_word(pdev, PCI_STATUS, &status);
		error_bits =
			(status & (PCI_STATUS_PARITY |
				   PCI_STATUS_DETECTED_PARITY));
		if (error_bits) {
			pci_write_config_word(pdev, PCI_STATUS, error_bits);
			printk("PCI%d(PBM%c): Device [%s] saw Parity Error [%016x]\n",
			       p->index, ((pbm == &p->pbm_A) ? 'A' : 'B'),
			       pci_name(pdev), status);
		}
	}

	list_for_each_entry(bus, &pbus->children, node)
		pci_scan_for_parity_error(p, pbm, bus);
}
Commit	Line	Data
1da177e4 LT	1	/* $Id: pci_common.c,v 1.29 2002/02/01 00:56:03 davem Exp $
	2	* pci_common.c: PCI controller common support.
	3	*
	4	* Copyright (C) 1999 David S. Miller (davem@redhat.com)
	5	*/
	6
	7	#include <linux/string.h>
	8	#include <linux/slab.h>
	9	#include <linux/init.h>
cf69eab2 FMDN	10	#include <linux/pci.h>
cf69eab2 FMDN	11	#include <linux/device.h>
1da177e4 LT	12
1da177e4 LT	13	#include <asm/pbm.h>
de8d28b1	14	#include <asm/prom.h>
2b1e5978	15	#include <asm/of_device.h>
de8d28b1 DM	16
de8d28b1 DM	17	#include "pci_impl.h"
1da177e4	18
1da177e4 LT	19	void pci_register_legacy_regions(struct resource *io_res,
	20	struct resource *mem_res)
	21	{
	22	struct resource *p;
	23
	24	/* VGA Video RAM. */
9132983a	25	p = kzalloc(sizeof(*p), GFP_KERNEL);
1da177e4 LT	26	if (!p)
	27	return;
	28
1da177e4 LT	29	p->name = "Video RAM area";
	30	p->start = mem_res->start + 0xa0000UL;
	31	p->end = p->start + 0x1ffffUL;
	32	p->flags = IORESOURCE_BUSY;
	33	request_resource(mem_res, p);
	34
9132983a	35	p = kzalloc(sizeof(*p), GFP_KERNEL);
1da177e4 LT	36	if (!p)
	37	return;
	38
1da177e4 LT	39	p->name = "System ROM";
	40	p->start = mem_res->start + 0xf0000UL;
	41	p->end = p->start + 0xffffUL;
	42	p->flags = IORESOURCE_BUSY;
	43	request_resource(mem_res, p);
	44
9132983a	45	p = kzalloc(sizeof(*p), GFP_KERNEL);
1da177e4 LT	46	if (!p)
	47	return;
	48
1da177e4 LT	49	p->name = "Video ROM";
	50	p->start = mem_res->start + 0xc0000UL;
	51	p->end = p->start + 0x7fffUL;
	52	p->flags = IORESOURCE_BUSY;
	53	request_resource(mem_res, p);
	54	}
	55
	56	/* Generic helper routines for PCI error reporting. */
	57	void pci_scan_for_target_abort(struct pci_controller_info *p,
	58	struct pci_pbm_info *pbm,
	59	struct pci_bus *pbus)
	60	{
	61	struct pci_dev *pdev;
	62	struct pci_bus *bus;
	63
	64	list_for_each_entry(pdev, &pbus->devices, bus_list) {
	65	u16 status, error_bits;
	66
	67	pci_read_config_word(pdev, PCI_STATUS, &status);
	68	error_bits =
	69	(status & (PCI_STATUS_SIG_TARGET_ABORT \|
	70	PCI_STATUS_REC_TARGET_ABORT));
	71	if (error_bits) {
	72	pci_write_config_word(pdev, PCI_STATUS, error_bits);
	73	printk("PCI%d(PBM%c): Device [%s] saw Target Abort [%016x]\n",
	74	p->index, ((pbm == &p->pbm_A) ? 'A' : 'B'),
	75	pci_name(pdev), status);
	76	}
	77	}
	78
	79	list_for_each_entry(bus, &pbus->children, node)
	80	pci_scan_for_target_abort(p, pbm, bus);
	81	}
	82
	83	void pci_scan_for_master_abort(struct pci_controller_info *p,
	84	struct pci_pbm_info *pbm,
	85	struct pci_bus *pbus)
	86	{
	87	struct pci_dev *pdev;
	88	struct pci_bus *bus;
	89
	90	list_for_each_entry(pdev, &pbus->devices, bus_list) {
	91	u16 status, error_bits;
	92
	93	pci_read_config_word(pdev, PCI_STATUS, &status);
	94	error_bits =
	95	(status & (PCI_STATUS_REC_MASTER_ABORT));
	96	if (error_bits) {
	97	pci_write_config_word(pdev, PCI_STATUS, error_bits);
	98	printk("PCI%d(PBM%c): Device [%s] received Master Abort [%016x]\n",
	99	p->index, ((pbm == &p->pbm_A) ? 'A' : 'B'),
	100	pci_name(pdev), status);
	101	}
	102	}
	103
	104	list_for_each_entry(bus, &pbus->children, node)
	105	pci_scan_for_master_abort(p, pbm, bus);
	106	}
	107
	108	void pci_scan_for_parity_error(struct pci_controller_info *p,
	109	struct pci_pbm_info *pbm,
	110	struct pci_bus *pbus)
	111	{
	112	struct pci_dev *pdev;
113	struct pci_bus *bus;
114
115	list_for_each_entry(pdev, &pbus->devices, bus_list) {
116	u16 status, error_bits;
117
118	pci_read_config_word(pdev, PCI_STATUS, &status);
119	error_bits =
120	(status & (PCI_STATUS_PARITY \|
121	PCI_STATUS_DETECTED_PARITY));
122	if (error_bits) {
123	pci_write_config_word(pdev, PCI_STATUS, error_bits);
124	printk("PCI%d(PBM%c): Device [%s] saw Parity Error [%016x]\n",
125	p->index, ((pbm == &p->pbm_A) ? 'A' : 'B'),
126	pci_name(pdev), status);
127	}
128	}
129
130	list_for_each_entry(bus, &pbus->children, node)
131	pci_scan_for_parity_error(p, pbm, bus);
132	}