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1/*
2** hppb.c:
3** HP-PB bus driver for the NOVA and K-Class systems.
4**
5** (c) Copyright 2002 Ryan Bradetich
6** (c) Copyright 2002 Hewlett-Packard Company
7**
8** This program is free software; you can redistribute it and/or modify
9** it under the terms of the GNU General Public License as published by
10** the Free Software Foundation; either version 2 of the License, or
11** (at your option) any later version.
12**
13*/
14
15#include <linux/types.h>
16#include <linux/init.h>
17#include <linux/mm.h>
18#include <linux/slab.h>
19#include <linux/dma-mapping.h>
20#include <linux/ioport.h>
21
22#include <asm/io.h>
23#include <asm/hardware.h>
24#include <asm/parisc-device.h>
25
26struct hppb_card {
27 unsigned long hpa;
28 struct resource mmio_region;
29 struct hppb_card *next;
30};
31
32static struct hppb_card hppb_card_head = {
33 .hpa = 0,
34 .next = NULL,
35};
36
37#define IO_IO_LOW offsetof(struct bc_module, io_io_low)
38#define IO_IO_HIGH offsetof(struct bc_module, io_io_high)
39
40/**
41 * hppb_probe - Determine if the hppb driver should claim this device.
42 * @dev: The device which has been found
43 *
44 * Determine if hppb driver should claim this chip (return 0) or not
45 * (return 1). If so, initialize the chip and tell other partners in crime
46 * they have work to do.
47 */
48static int hppb_probe(struct parisc_device *dev)
49{
50 int status;
51 struct hppb_card *card = &hppb_card_head;
52
53 while(card->next) {
54 card = card->next;
55 }
56
57 if(card->hpa) {
58 card->next = kzalloc(sizeof(struct hppb_card), GFP_KERNEL);
59 if(!card->next) {
60 printk(KERN_ERR "HP-PB: Unable to allocate memory.\n");
61 return 1;
62 }
63 card = card->next;
64 }
65 printk(KERN_INFO "Found GeckoBoa at 0x%llx\n",
66 (unsigned long long) dev->hpa.start);
67
68 card->hpa = dev->hpa.start;
69 card->mmio_region.name = "HP-PB Bus";
70 card->mmio_region.flags = IORESOURCE_MEM;
71
72 card->mmio_region.start = gsc_readl(dev->hpa.start + IO_IO_LOW);
73 card->mmio_region.end = gsc_readl(dev->hpa.start + IO_IO_HIGH) - 1;
74
75 status = ccio_request_resource(dev, &card->mmio_region);
76 if(status < 0) {
77 printk(KERN_ERR "%s: failed to claim HP-PB bus space (%pR)\n",
78 __FILE__, &card->mmio_region);
79 }
80
81 return 0;
82}
83
84static struct parisc_device_id hppb_tbl[] = {
85 { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, /* E25 and K */
86 { HPHW_BCPORT, 0x0, 0x501, 0xc }, /* E35 */
87 { HPHW_BCPORT, 0x0, 0x502, 0xc }, /* E45 */
88 { HPHW_BCPORT, 0x0, 0x503, 0xc }, /* E55 */
89 { 0, }
90};
91
92static struct parisc_driver hppb_driver = {
93 .name = "gecko_boa",
94 .id_table = hppb_tbl,
95 .probe = hppb_probe,
96};
97
98/**
99 * hppb_init - HP-PB bus initialization procedure.
100 *
101 * Register this driver.
102 */
103void __init hppb_init(void)
104{
105 register_parisc_driver(&hppb_driver);
106}
1/*
2** hppb.c:
3** HP-PB bus driver for the NOVA and K-Class systems.
4**
5** (c) Copyright 2002 Ryan Bradetich
6** (c) Copyright 2002 Hewlett-Packard Company
7**
8** This program is free software; you can redistribute it and/or modify
9** it under the terms of the GNU General Public License as published by
10** the Free Software Foundation; either version 2 of the License, or
11** (at your option) any later version.
12**
13*/
14
15#include <linux/types.h>
16#include <linux/init.h>
17#include <linux/mm.h>
18#include <linux/slab.h>
19#include <linux/dma-mapping.h>
20#include <linux/ioport.h>
21
22#include <asm/io.h>
23#include <asm/hardware.h>
24#include <asm/parisc-device.h>
25
26struct hppb_card {
27 unsigned long hpa;
28 struct resource mmio_region;
29 struct hppb_card *next;
30};
31
32static struct hppb_card hppb_card_head = {
33 .hpa = 0,
34 .next = NULL,
35};
36
37#define IO_IO_LOW offsetof(struct bc_module, io_io_low)
38#define IO_IO_HIGH offsetof(struct bc_module, io_io_high)
39
40/**
41 * hppb_probe - Determine if the hppb driver should claim this device.
42 * @dev: The device which has been found
43 *
44 * Determine if hppb driver should claim this chip (return 0) or not
45 * (return 1). If so, initialize the chip and tell other partners in crime
46 * they have work to do.
47 */
48static int __init hppb_probe(struct parisc_device *dev)
49{
50 int status;
51 struct hppb_card *card = &hppb_card_head;
52
53 while(card->next) {
54 card = card->next;
55 }
56
57 if(card->hpa) {
58 card->next = kzalloc(sizeof(struct hppb_card), GFP_KERNEL);
59 if(!card->next) {
60 printk(KERN_ERR "HP-PB: Unable to allocate memory.\n");
61 return 1;
62 }
63 card = card->next;
64 }
65 printk(KERN_INFO "Found GeckoBoa at 0x%llx\n",
66 (unsigned long long) dev->hpa.start);
67
68 card->hpa = dev->hpa.start;
69 card->mmio_region.name = "HP-PB Bus";
70 card->mmio_region.flags = IORESOURCE_MEM;
71
72 card->mmio_region.start = gsc_readl(dev->hpa.start + IO_IO_LOW);
73 card->mmio_region.end = gsc_readl(dev->hpa.start + IO_IO_HIGH) - 1;
74
75 status = ccio_request_resource(dev, &card->mmio_region);
76 if(status < 0) {
77 printk(KERN_ERR "%s: failed to claim HP-PB bus space (%pR)\n",
78 __FILE__, &card->mmio_region);
79 }
80
81 return 0;
82}
83
84static const struct parisc_device_id hppb_tbl[] __initconst = {
85 { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, /* E25 and K */
86 { HPHW_BCPORT, 0x0, 0x501, 0xc }, /* E35 */
87 { HPHW_BCPORT, 0x0, 0x502, 0xc }, /* E45 */
88 { HPHW_BCPORT, 0x0, 0x503, 0xc }, /* E55 */
89 { 0, }
90};
91
92static struct parisc_driver hppb_driver __refdata = {
93 .name = "gecko_boa",
94 .id_table = hppb_tbl,
95 .probe = hppb_probe,
96};
97
98/**
99 * hppb_init - HP-PB bus initialization procedure.
100 *
101 * Register this driver.
102 */
103void __init hppb_init(void)
104{
105 register_parisc_driver(&hppb_driver);
106}