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authorRalf Baechle <ralf@linux-mips.org>2009-12-16 20:57:35 -0500
committerRalf Baechle <ralf@linux-mips.org>2009-12-16 20:57:35 -0500
commitde4148f3ef54b644a181ad75a6fb4b373f2b01f0 (patch)
tree83aa287fbbcc14a3df9e161af99af49776b61b6f /drivers
parentc3d8d85019c9e4f6e4f23d194b6432a2c2464372 (diff)
MIPS: eXcite: Remove platform.
The platform has never been fully merged Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: Thomas Koeller <thomas.koeller@baslerweb.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: linux-kernel@vger.kernel.org Cc: linux-mtd@lists.infradead.org Acked-by: David Woodhouse <David.Woodhouse@intel.com> Acked-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mtd/nand/Kconfig8
-rw-r--r--drivers/mtd/nand/Makefile1
-rw-r--r--drivers/mtd/nand/excite_nandflash.c248
-rw-r--r--drivers/watchdog/Kconfig10
-rw-r--r--drivers/watchdog/Makefile1
-rw-r--r--drivers/watchdog/rm9k_wdt.c419
6 files changed, 0 insertions, 687 deletions
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 7678538344f4..677cd53f18c3 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -291,14 +291,6 @@ config MTD_NAND_SHARPSL
291 tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)" 291 tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
292 depends on ARCH_PXA 292 depends on ARCH_PXA
293 293
294config MTD_NAND_BASLER_EXCITE
295 tristate "Support for NAND Flash on Basler eXcite"
296 depends on BASLER_EXCITE
297 help
298 This enables the driver for the NAND flash device found on the
299 Basler eXcite Smart Camera. If built as a module, the driver
300 will be named excite_nandflash.
301
302config MTD_NAND_CAFE 294config MTD_NAND_CAFE
303 tristate "NAND support for OLPC CAFÉ chip" 295 tristate "NAND support for OLPC CAFÉ chip"
304 depends on PCI 296 depends on PCI
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 460a1f39a8d1..1407bd144015 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -27,7 +27,6 @@ obj-$(CONFIG_MTD_NAND_ATMEL) += atmel_nand.o
27obj-$(CONFIG_MTD_NAND_GPIO) += gpio.o 27obj-$(CONFIG_MTD_NAND_GPIO) += gpio.o
28obj-$(CONFIG_MTD_NAND_OMAP2) += omap2.o 28obj-$(CONFIG_MTD_NAND_OMAP2) += omap2.o
29obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o 29obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
30obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o
31obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o 30obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o
32obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o 31obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o
33obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o 32obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
diff --git a/drivers/mtd/nand/excite_nandflash.c b/drivers/mtd/nand/excite_nandflash.c
deleted file mode 100644
index af6a6a5399e1..000000000000
--- a/drivers/mtd/nand/excite_nandflash.c
+++ /dev/null
@@ -1,248 +0,0 @@
1/*
2* Copyright (C) 2005 - 2007 by Basler Vision Technologies AG
3* Author: Thomas Koeller <thomas.koeller.qbaslerweb.com>
4* Original code by Thies Moeller <thies.moeller@baslerweb.com>
5*
6* This program is free software; you can redistribute it and/or modify
7* it under the terms of the GNU General Public License as published by
8* the Free Software Foundation; either version 2 of the License, or
9* (at your option) any later version.
10*
11* This program is distributed in the hope that it will be useful,
12* but WITHOUT ANY WARRANTY; without even the implied warranty of
13* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14* GNU General Public License for more details.
15*
16* You should have received a copy of the GNU General Public License
17* along with this program; if not, write to the Free Software
18* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19*/
20
21#include <linux/module.h>
22#include <linux/types.h>
23#include <linux/init.h>
24#include <linux/kernel.h>
25#include <linux/string.h>
26#include <linux/ioport.h>
27#include <linux/platform_device.h>
28#include <linux/delay.h>
29#include <linux/err.h>
30
31#include <linux/mtd/mtd.h>
32#include <linux/mtd/nand.h>
33#include <linux/mtd/nand_ecc.h>
34#include <linux/mtd/partitions.h>
35
36#include <asm/io.h>
37#include <asm/rm9k-ocd.h>
38
39#include <excite_nandflash.h>
40
41#define EXCITE_NANDFLASH_VERSION "0.1"
42
43/* I/O register offsets */
44#define EXCITE_NANDFLASH_DATA_BYTE 0x00
45#define EXCITE_NANDFLASH_STATUS_BYTE 0x0c
46#define EXCITE_NANDFLASH_ADDR_BYTE 0x10
47#define EXCITE_NANDFLASH_CMD_BYTE 0x14
48
49/* prefix for debug output */
50static const char module_id[] = "excite_nandflash";
51
52/*
53 * partition definition
54 */
55static const struct mtd_partition partition_info[] = {
56 {
57 .name = "eXcite RootFS",
58 .offset = 0,
59 .size = MTDPART_SIZ_FULL
60 }
61};
62
63static inline const struct resource *
64excite_nand_get_resource(struct platform_device *d, unsigned long flags,
65 const char *basename)
66{
67 char buf[80];
68
69 if (snprintf(buf, sizeof buf, "%s_%u", basename, d->id) >= sizeof buf)
70 return NULL;
71 return platform_get_resource_byname(d, flags, buf);
72}
73
74static inline void __iomem *
75excite_nand_map_regs(struct platform_device *d, const char *basename)
76{
77 void *result = NULL;
78 const struct resource *const r =
79 excite_nand_get_resource(d, IORESOURCE_MEM, basename);
80
81 if (r)
82 result = ioremap_nocache(r->start, r->end + 1 - r->start);
83 return result;
84}
85
86/* controller and mtd information */
87struct excite_nand_drvdata {
88 struct mtd_info board_mtd;
89 struct nand_chip board_chip;
90 void __iomem *regs;
91 void __iomem *tgt;
92};
93
94/* Control function */
95static void excite_nand_control(struct mtd_info *mtd, int cmd,
96 unsigned int ctrl)
97{
98 struct excite_nand_drvdata * const d =
99 container_of(mtd, struct excite_nand_drvdata, board_mtd);
100
101 switch (ctrl) {
102 case NAND_CTRL_CHANGE | NAND_CTRL_CLE:
103 d->tgt = d->regs + EXCITE_NANDFLASH_CMD_BYTE;
104 break;
105 case NAND_CTRL_CHANGE | NAND_CTRL_ALE:
106 d->tgt = d->regs + EXCITE_NANDFLASH_ADDR_BYTE;
107 break;
108 case NAND_CTRL_CHANGE | NAND_NCE:
109 d->tgt = d->regs + EXCITE_NANDFLASH_DATA_BYTE;
110 break;
111 }
112
113 if (cmd != NAND_CMD_NONE)
114 __raw_writeb(cmd, d->tgt);
115}
116
117/* Return 0 if flash is busy, 1 if ready */
118static int excite_nand_devready(struct mtd_info *mtd)
119{
120 struct excite_nand_drvdata * const drvdata =
121 container_of(mtd, struct excite_nand_drvdata, board_mtd);
122
123 return __raw_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS_BYTE);
124}
125
126/*
127 * Called by device layer to remove the driver.
128 * The binding to the mtd and all allocated
129 * resources are released.
130 */
131static int __devexit excite_nand_remove(struct platform_device *dev)
132{
133 struct excite_nand_drvdata * const this = platform_get_drvdata(dev);
134
135 platform_set_drvdata(dev, NULL);
136
137 if (unlikely(!this)) {
138 printk(KERN_ERR "%s: called %s without private data!!",
139 module_id, __func__);
140 return -EINVAL;
141 }
142
143 /* first thing we need to do is release our mtd
144 * then go through freeing the resource used
145 */
146 nand_release(&this->board_mtd);
147
148 /* free the common resources */
149 iounmap(this->regs);
150 kfree(this);
151
152 DEBUG(MTD_DEBUG_LEVEL1, "%s: removed\n", module_id);
153 return 0;
154}
155
156/*
157 * Called by device layer when it finds a device matching
158 * one our driver can handle. This code checks to see if
159 * it can allocate all necessary resources then calls the
160 * nand layer to look for devices.
161*/
162static int __init excite_nand_probe(struct platform_device *pdev)
163{
164 struct excite_nand_drvdata *drvdata; /* private driver data */
165 struct nand_chip *board_chip; /* private flash chip data */
166 struct mtd_info *board_mtd; /* mtd info for this board */
167 int scan_res;
168
169 drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
170 if (unlikely(!drvdata)) {
171 printk(KERN_ERR "%s: no memory for drvdata\n",
172 module_id);
173 return -ENOMEM;
174 }
175
176 /* bind private data into driver */
177 platform_set_drvdata(pdev, drvdata);
178
179 /* allocate and map the resource */
180 drvdata->regs =
181 excite_nand_map_regs(pdev, EXCITE_NANDFLASH_RESOURCE_REGS);
182
183 if (unlikely(!drvdata->regs)) {
184 printk(KERN_ERR "%s: cannot reserve register region\n",
185 module_id);
186 kfree(drvdata);
187 return -ENXIO;
188 }
189
190 drvdata->tgt = drvdata->regs + EXCITE_NANDFLASH_DATA_BYTE;
191
192 /* initialise our chip */
193 board_chip = &drvdata->board_chip;
194 board_chip->IO_ADDR_R = board_chip->IO_ADDR_W =
195 drvdata->regs + EXCITE_NANDFLASH_DATA_BYTE;
196 board_chip->cmd_ctrl = excite_nand_control;
197 board_chip->dev_ready = excite_nand_devready;
198 board_chip->chip_delay = 25;
199 board_chip->ecc.mode = NAND_ECC_SOFT;
200
201 /* link chip to mtd */
202 board_mtd = &drvdata->board_mtd;
203 board_mtd->priv = board_chip;
204
205 DEBUG(MTD_DEBUG_LEVEL2, "%s: device scan\n", module_id);
206 scan_res = nand_scan(&drvdata->board_mtd, 1);
207
208 if (likely(!scan_res)) {
209 DEBUG(MTD_DEBUG_LEVEL2, "%s: register partitions\n", module_id);
210 add_mtd_partitions(&drvdata->board_mtd, partition_info,
211 ARRAY_SIZE(partition_info));
212 } else {
213 iounmap(drvdata->regs);
214 kfree(drvdata);
215 printk(KERN_ERR "%s: device scan failed\n", module_id);
216 return -EIO;
217 }
218 return 0;
219}
220
221static struct platform_driver excite_nand_driver = {
222 .driver = {
223 .name = "excite_nand",
224 .owner = THIS_MODULE,
225 },
226 .probe = excite_nand_probe,
227 .remove = __devexit_p(excite_nand_remove)
228};
229
230static int __init excite_nand_init(void)
231{
232 pr_info("Basler eXcite nand flash driver Version "
233 EXCITE_NANDFLASH_VERSION "\n");
234 return platform_driver_register(&excite_nand_driver);
235}
236
237static void __exit excite_nand_exit(void)
238{
239 platform_driver_unregister(&excite_nand_driver);
240}
241
242module_init(excite_nand_init);
243module_exit(excite_nand_exit);
244
245MODULE_AUTHOR("Thomas Koeller <thomas.koeller@baslerweb.com>");
246MODULE_DESCRIPTION("Basler eXcite NAND-Flash driver");
247MODULE_LICENSE("GPL");
248MODULE_VERSION(EXCITE_NANDFLASH_VERSION)
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index d958b76430a2..da84fd03850f 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -815,16 +815,6 @@ config PNX833X_WDT
815 timer has expired and no process has written to /dev/watchdog during 815 timer has expired and no process has written to /dev/watchdog during
816 that time. 816 that time.
817 817
818config WDT_RM9K_GPI
819 tristate "RM9000/GPI hardware watchdog"
820 depends on CPU_RM9000
821 help
822 Watchdog implementation using the GPI hardware found on
823 PMC-Sierra RM9xxx CPUs.
824
825 To compile this driver as a module, choose M here: the
826 module will be called rm9k_wdt.
827
828config SIBYTE_WDOG 818config SIBYTE_WDOG
829 tristate "Sibyte SoC hardware watchdog" 819 tristate "Sibyte SoC hardware watchdog"
830 depends on CPU_SB1 820 depends on CPU_SB1
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index 89c045dc468e..475c61100069 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -109,7 +109,6 @@ obj-$(CONFIG_RC32434_WDT) += rc32434_wdt.o
109obj-$(CONFIG_INDYDOG) += indydog.o 109obj-$(CONFIG_INDYDOG) += indydog.o
110obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o 110obj-$(CONFIG_WDT_MTX1) += mtx-1_wdt.o
111obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o 111obj-$(CONFIG_PNX833X_WDT) += pnx833x_wdt.o
112obj-$(CONFIG_WDT_RM9K_GPI) += rm9k_wdt.o
113obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o 112obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
114obj-$(CONFIG_AR7_WDT) += ar7_wdt.o 113obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
115obj-$(CONFIG_TXX9_WDT) += txx9wdt.o 114obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
diff --git a/drivers/watchdog/rm9k_wdt.c b/drivers/watchdog/rm9k_wdt.c
deleted file mode 100644
index bb66958b9433..000000000000
--- a/drivers/watchdog/rm9k_wdt.c
+++ /dev/null
@@ -1,419 +0,0 @@
1/*
2 * Watchdog implementation for GPI h/w found on PMC-Sierra RM9xxx
3 * chips.
4 *
5 * Copyright (C) 2004 by Basler Vision Technologies AG
6 * Author: Thomas Koeller <thomas.koeller@baslerweb.com>
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 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/platform_device.h>
24#include <linux/module.h>
25#include <linux/moduleparam.h>
26#include <linux/interrupt.h>
27#include <linux/fs.h>
28#include <linux/reboot.h>
29#include <linux/notifier.h>
30#include <linux/miscdevice.h>
31#include <linux/watchdog.h>
32#include <linux/io.h>
33#include <linux/uaccess.h>
34#include <asm/atomic.h>
35#include <asm/processor.h>
36#include <asm/system.h>
37#include <asm/rm9k-ocd.h>
38
39#include <rm9k_wdt.h>
40
41
42#define CLOCK 125000000
43#define MAX_TIMEOUT_SECONDS 32
44#define CPCCR 0x0080
45#define CPGIG1SR 0x0044
46#define CPGIG1ER 0x0054
47
48
49/* Function prototypes */
50static irqreturn_t wdt_gpi_irqhdl(int, void *);
51static void wdt_gpi_start(void);
52static void wdt_gpi_stop(void);
53static void wdt_gpi_set_timeout(unsigned int);
54static int wdt_gpi_open(struct inode *, struct file *);
55static int wdt_gpi_release(struct inode *, struct file *);
56static ssize_t wdt_gpi_write(struct file *, const char __user *, size_t,
57 loff_t *);
58static long wdt_gpi_ioctl(struct file *, unsigned int, unsigned long);
59static int wdt_gpi_notify(struct notifier_block *, unsigned long, void *);
60static const struct resource *wdt_gpi_get_resource(struct platform_device *,
61 const char *, unsigned int);
62static int __init wdt_gpi_probe(struct platform_device *);
63static int __exit wdt_gpi_remove(struct platform_device *);
64
65
66static const char wdt_gpi_name[] = "wdt_gpi";
67static atomic_t opencnt;
68static int expect_close;
69static int locked;
70
71
72/* These are set from device resources */
73static void __iomem *wd_regs;
74static unsigned int wd_irq, wd_ctr;
75
76
77/* Module arguments */
78static int timeout = MAX_TIMEOUT_SECONDS;
79module_param(timeout, int, 0444);
80MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds");
81
82static unsigned long resetaddr = 0xbffdc200;
83module_param(resetaddr, ulong, 0444);
84MODULE_PARM_DESC(resetaddr, "Address to write to to force a reset");
85
86static unsigned long flagaddr = 0xbffdc104;
87module_param(flagaddr, ulong, 0444);
88MODULE_PARM_DESC(flagaddr, "Address to write to boot flags to");
89
90static int powercycle;
91module_param(powercycle, bool, 0444);
92MODULE_PARM_DESC(powercycle, "Cycle power if watchdog expires");
93
94static int nowayout = WATCHDOG_NOWAYOUT;
95module_param(nowayout, bool, 0444);
96MODULE_PARM_DESC(nowayout, "Watchdog cannot be disabled once started");
97
98
99/* Kernel interfaces */
100static const struct file_operations fops = {
101 .owner = THIS_MODULE,
102 .open = wdt_gpi_open,
103 .release = wdt_gpi_release,
104 .write = wdt_gpi_write,
105 .unlocked_ioctl = wdt_gpi_ioctl,
106};
107
108static struct miscdevice miscdev = {
109 .minor = WATCHDOG_MINOR,
110 .name = wdt_gpi_name,
111 .fops = &fops,
112};
113
114static struct notifier_block wdt_gpi_shutdown = {
115 .notifier_call = wdt_gpi_notify,
116};
117
118
119/* Interrupt handler */
120static irqreturn_t wdt_gpi_irqhdl(int irq, void *ctxt)
121{
122 if (!unlikely(__raw_readl(wd_regs + 0x0008) & 0x1))
123 return IRQ_NONE;
124 __raw_writel(0x1, wd_regs + 0x0008);
125
126
127 printk(KERN_CRIT "%s: watchdog expired - resetting system\n",
128 wdt_gpi_name);
129
130 *(volatile char *) flagaddr |= 0x01;
131 *(volatile char *) resetaddr = powercycle ? 0x01 : 0x2;
132 iob();
133 while (1)
134 cpu_relax();
135}
136
137
138/* Watchdog functions */
139static void wdt_gpi_start(void)
140{
141 u32 reg;
142
143 lock_titan_regs();
144 reg = titan_readl(CPGIG1ER);
145 titan_writel(reg | (0x100 << wd_ctr), CPGIG1ER);
146 iob();
147 unlock_titan_regs();
148}
149
150static void wdt_gpi_stop(void)
151{
152 u32 reg;
153
154 lock_titan_regs();
155 reg = titan_readl(CPCCR) & ~(0xf << (wd_ctr * 4));
156 titan_writel(reg, CPCCR);
157 reg = titan_readl(CPGIG1ER);
158 titan_writel(reg & ~(0x100 << wd_ctr), CPGIG1ER);
159 iob();
160 unlock_titan_regs();
161}
162
163static void wdt_gpi_set_timeout(unsigned int to)
164{
165 u32 reg;
166 const u32 wdval = (to * CLOCK) & ~0x0000000f;
167
168 lock_titan_regs();
169 reg = titan_readl(CPCCR) & ~(0xf << (wd_ctr * 4));
170 titan_writel(reg, CPCCR);
171 wmb();
172 __raw_writel(wdval, wd_regs + 0x0000);
173 wmb();
174 titan_writel(reg | (0x2 << (wd_ctr * 4)), CPCCR);
175 wmb();
176 titan_writel(reg | (0x5 << (wd_ctr * 4)), CPCCR);
177 iob();
178 unlock_titan_regs();
179}
180
181
182/* /dev/watchdog operations */
183static int wdt_gpi_open(struct inode *inode, struct file *file)
184{
185 int res;
186
187 if (unlikely(atomic_dec_if_positive(&opencnt) < 0))
188 return -EBUSY;
189
190 expect_close = 0;
191 if (locked) {
192 module_put(THIS_MODULE);
193 free_irq(wd_irq, &miscdev);
194 locked = 0;
195 }
196
197 res = request_irq(wd_irq, wdt_gpi_irqhdl, IRQF_SHARED | IRQF_DISABLED,
198 wdt_gpi_name, &miscdev);
199 if (unlikely(res))
200 return res;
201
202 wdt_gpi_set_timeout(timeout);
203 wdt_gpi_start();
204
205 printk(KERN_INFO "%s: watchdog started, timeout = %u seconds\n",
206 wdt_gpi_name, timeout);
207 return nonseekable_open(inode, file);
208}
209
210static int wdt_gpi_release(struct inode *inode, struct file *file)
211{
212 if (nowayout) {
213 printk(KERN_INFO "%s: no way out - watchdog left running\n",
214 wdt_gpi_name);
215 __module_get(THIS_MODULE);
216 locked = 1;
217 } else {
218 if (expect_close) {
219 wdt_gpi_stop();
220 free_irq(wd_irq, &miscdev);
221 printk(KERN_INFO "%s: watchdog stopped\n",
222 wdt_gpi_name);
223 } else {
224 printk(KERN_CRIT "%s: unexpected close() -"
225 " watchdog left running\n",
226 wdt_gpi_name);
227 wdt_gpi_set_timeout(timeout);
228 __module_get(THIS_MODULE);
229 locked = 1;
230 }
231 }
232
233 atomic_inc(&opencnt);
234 return 0;
235}
236
237static ssize_t wdt_gpi_write(struct file *f, const char __user *d, size_t s,
238 loff_t *o)
239{
240 char val;
241
242 wdt_gpi_set_timeout(timeout);
243 expect_close = (s > 0) && !get_user(val, d) && (val == 'V');
244 return s ? 1 : 0;
245}
246
247static long wdt_gpi_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
248{
249 long res = -ENOTTY;
250 const long size = _IOC_SIZE(cmd);
251 int stat;
252 void __user *argp = (void __user *)arg;
253 static struct watchdog_info wdinfo = {
254 .identity = "RM9xxx/GPI watchdog",
255 .firmware_version = 0,
256 .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING
257 };
258
259 if (unlikely(_IOC_TYPE(cmd) != WATCHDOG_IOCTL_BASE))
260 return -ENOTTY;
261
262 if ((_IOC_DIR(cmd) & _IOC_READ)
263 && !access_ok(VERIFY_WRITE, arg, size))
264 return -EFAULT;
265
266 if ((_IOC_DIR(cmd) & _IOC_WRITE)
267 && !access_ok(VERIFY_READ, arg, size))
268 return -EFAULT;
269
270 expect_close = 0;
271
272 switch (cmd) {
273 case WDIOC_GETSUPPORT:
274 wdinfo.options = nowayout ?
275 WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING :
276 WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
277 WDIOF_MAGICCLOSE;
278 res = __copy_to_user(argp, &wdinfo, size) ? -EFAULT : size;
279 break;
280
281 case WDIOC_GETSTATUS:
282 break;
283
284 case WDIOC_GETBOOTSTATUS:
285 stat = (*(volatile char *) flagaddr & 0x01)
286 ? WDIOF_CARDRESET : 0;
287 res = __copy_to_user(argp, &stat, size) ?
288 -EFAULT : size;
289 break;
290
291 case WDIOC_SETOPTIONS:
292 break;
293
294 case WDIOC_KEEPALIVE:
295 wdt_gpi_set_timeout(timeout);
296 res = size;
297 break;
298
299 case WDIOC_SETTIMEOUT:
300 {
301 int val;
302 if (unlikely(__copy_from_user(&val, argp, size))) {
303 res = -EFAULT;
304 break;
305 }
306
307 if (val > MAX_TIMEOUT_SECONDS)
308 val = MAX_TIMEOUT_SECONDS;
309 timeout = val;
310 wdt_gpi_set_timeout(val);
311 res = size;
312 printk(KERN_INFO "%s: timeout set to %u seconds\n",
313 wdt_gpi_name, timeout);
314 }
315 break;
316
317 case WDIOC_GETTIMEOUT:
318 res = __copy_to_user(argp, &timeout, size) ?
319 -EFAULT : size;
320 break;
321 }
322
323 return res;
324}
325
326
327/* Shutdown notifier */
328static int wdt_gpi_notify(struct notifier_block *this, unsigned long code,
329 void *unused)
330{
331 if (code == SYS_DOWN || code == SYS_HALT)
332 wdt_gpi_stop();
333
334 return NOTIFY_DONE;
335}
336
337
338/* Init & exit procedures */
339static const struct resource *wdt_gpi_get_resource(struct platform_device *pdv,
340 const char *name, unsigned int type)
341{
342 char buf[80];
343 if (snprintf(buf, sizeof(buf), "%s_0", name) >= sizeof(buf))
344 return NULL;
345 return platform_get_resource_byname(pdv, type, buf);
346}
347
348/* No hotplugging on the platform bus - use __devinit */
349static int __devinit wdt_gpi_probe(struct platform_device *pdv)
350{
351 int res;
352 const struct resource
353 * const rr = wdt_gpi_get_resource(pdv, WDT_RESOURCE_REGS,
354 IORESOURCE_MEM),
355 * const ri = wdt_gpi_get_resource(pdv, WDT_RESOURCE_IRQ,
356 IORESOURCE_IRQ),
357 * const rc = wdt_gpi_get_resource(pdv, WDT_RESOURCE_COUNTER,
358 0);
359
360 if (unlikely(!rr || !ri || !rc))
361 return -ENXIO;
362
363 wd_regs = ioremap_nocache(rr->start, rr->end + 1 - rr->start);
364 if (unlikely(!wd_regs))
365 return -ENOMEM;
366 wd_irq = ri->start;
367 wd_ctr = rc->start;
368 res = misc_register(&miscdev);
369 if (res)
370 iounmap(wd_regs);
371 else
372 register_reboot_notifier(&wdt_gpi_shutdown);
373 return res;
374}
375
376static int __devexit wdt_gpi_remove(struct platform_device *dev)
377{
378 int res;
379
380 unregister_reboot_notifier(&wdt_gpi_shutdown);
381 res = misc_deregister(&miscdev);
382 iounmap(wd_regs);
383 wd_regs = NULL;
384 return res;
385}
386
387
388/* Device driver init & exit */
389static struct platform_driver wgt_gpi_driver = {
390 .driver = {
391 .name = wdt_gpi_name,
392 .owner = THIS_MODULE,
393 },
394 .probe = wdt_gpi_probe,
395 .remove = __devexit_p(wdt_gpi_remove),
396};
397
398static int __init wdt_gpi_init_module(void)
399{
400 atomic_set(&opencnt, 1);
401 if (timeout > MAX_TIMEOUT_SECONDS)
402 timeout = MAX_TIMEOUT_SECONDS;
403 return platform_driver_register(&wdt_gpi_driver);
404}
405
406static void __exit wdt_gpi_cleanup_module(void)
407{
408 platform_driver_unregister(&wdt_gpi_driver);
409}
410
411module_init(wdt_gpi_init_module);
412module_exit(wdt_gpi_cleanup_module);
413
414MODULE_AUTHOR("Thomas Koeller <thomas.koeller@baslerweb.com>");
415MODULE_DESCRIPTION("Basler eXcite watchdog driver for gpi devices");
416MODULE_VERSION("0.1");
417MODULE_LICENSE("GPL");
418MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
419
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-02 07:20:05 -0400