cregit-Linux how code gets into the kernel

Release 4.10 drivers/parisc/hppb.c

Directory: drivers/parisc
/*
** hppb.c:
**      HP-PB bus driver for the NOVA and K-Class systems.
**
**      (c) Copyright 2002 Ryan Bradetich
**      (c) Copyright 2002 Hewlett-Packard Company
**
** 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.
**
*/

#include <linux/types.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <linux/ioport.h>

#include <asm/io.h>
#include <asm/hardware.h>
#include <asm/parisc-device.h>


struct hppb_card {
	
unsigned long hpa;
	
struct resource mmio_region;
	
struct hppb_card *next;
};


static struct hppb_card hppb_card_head = {
	.hpa = 0,
	.next = NULL,
};


#define IO_IO_LOW  offsetof(struct bc_module, io_io_low)

#define IO_IO_HIGH offsetof(struct bc_module, io_io_high)

/**
 * hppb_probe - Determine if the hppb driver should claim this device.
 * @dev: The device which has been found
 *
 * Determine if hppb driver should claim this chip (return 0) or not 
 * (return 1). If so, initialize the chip and tell other partners in crime 
 * they have work to do.
 */

static int hppb_probe(struct parisc_device *dev) { int status; struct hppb_card *card = &hppb_card_head; while(card->next) { card = card->next; } if(card->hpa) { card->next = kzalloc(sizeof(struct hppb_card), GFP_KERNEL); if(!card->next) { printk(KERN_ERR "HP-PB: Unable to allocate memory.\n"); return 1; } card = card->next; } printk(KERN_INFO "Found GeckoBoa at 0x%llx\n", (unsigned long long) dev->hpa.start); card->hpa = dev->hpa.start; card->mmio_region.name = "HP-PB Bus"; card->mmio_region.flags = IORESOURCE_MEM; card->mmio_region.start = gsc_readl(dev->hpa.start + IO_IO_LOW); card->mmio_region.end = gsc_readl(dev->hpa.start + IO_IO_HIGH) - 1; status = ccio_request_resource(dev, &card->mmio_region); if(status < 0) { printk(KERN_ERR "%s: failed to claim HP-PB bus space (%pR)\n", __FILE__, &card->mmio_region); } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
matthew wilcoxmatthew wilcox18995.45%240.00%
helge dellerhelge deller73.54%240.00%
joe perchesjoe perches21.01%120.00%
Total198100.00%5100.00%

static struct parisc_device_id hppb_tbl[] = { { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, /* E25 and K */ { HPHW_BCPORT, 0x0, 0x501, 0xc }, /* E35 */ { HPHW_BCPORT, 0x0, 0x502, 0xc }, /* E45 */ { HPHW_BCPORT, 0x0, 0x503, 0xc }, /* E55 */ { 0, } }; static struct parisc_driver hppb_driver = { .name = "gecko_boa", .id_table = hppb_tbl, .probe = hppb_probe, }; /** * hppb_init - HP-PB bus initialization procedure. * * Register this driver. */
void __init hppb_init(void) { register_parisc_driver(&hppb_driver); }

Contributors

PersonTokensPropCommitsCommitProp
matthew wilcoxmatthew wilcox14100.00%1100.00%
Total14100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
matthew wilcoxmatthew wilcox31486.50%330.00%
ryan bradetichryan bradetich359.64%110.00%
helge dellerhelge deller71.93%220.00%
joe perchesjoe perches30.83%220.00%
frank lichtenheldfrank lichtenheld30.83%110.00%
adrian bunkadrian bunk10.28%110.00%
Total363100.00%10100.00%
Directory: drivers/parisc
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