3 ** HP-PB bus driver for the NOVA and K-Class systems.
5 ** (c) Copyright 2002 Ryan Bradetich
6 ** (c) Copyright 2002 Hewlett-Packard Company
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.
15 #include <linux/types.h>
16 #include <linux/init.h>
18 #include <linux/slab.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/ioport.h>
23 #include <asm/hardware.h>
24 #include <asm/parisc-device.h>
28 struct resource mmio_region;
29 struct hppb_card *next;
32 static struct hppb_card hppb_card_head = {
37 #define IO_IO_LOW offsetof(struct bc_module, io_io_low)
38 #define IO_IO_HIGH offsetof(struct bc_module, io_io_high)
41 * hppb_probe - Determine if the hppb driver should claim this device.
42 * @dev: The device which has been found
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.
48 static int hppb_probe(struct parisc_device *dev)
51 struct hppb_card *card = &hppb_card_head;
58 card->next = kzalloc(sizeof(struct hppb_card), GFP_KERNEL);
60 printk(KERN_ERR "HP-PB: Unable to allocate memory.\n");
65 printk(KERN_INFO "Found GeckoBoa at 0x%llx\n",
66 (unsigned long long) dev->hpa.start);
68 card->hpa = dev->hpa.start;
69 card->mmio_region.name = "HP-PB Bus";
70 card->mmio_region.flags = IORESOURCE_MEM;
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;
75 status = ccio_request_resource(dev, &card->mmio_region);
77 printk(KERN_ERR "%s: failed to claim HP-PB bus space (%pR)\n",
78 __FILE__, &card->mmio_region);
84 static 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 */
92 static struct parisc_driver hppb_driver = {
99 * hppb_init - HP-PB bus initialization procedure.
101 * Register this driver.
103 void __init hppb_init(void)
105 register_parisc_driver(&hppb_driver);