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authorJeff Garzik <jeff@garzik.org>2007-08-02 18:51:14 -0400
committerJeff Garzik <jeff@garzik.org>2007-10-12 09:14:49 -0400
commit60cc5147ae07b3b0f7592a611fa20169f7dd02cc (patch)
treec3c929e3cc86fdc5593ded3889d66b84e4e8118e /drivers
parent782e3b3b3804c38d5130c7f21d7ec7bf6709023f (diff)
[ISDN] hysdn: convert to PCI hotplug API
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/isdn/hysdn/hysdn_init.c274
1 files changed, 130 insertions, 144 deletions
diff --git a/drivers/isdn/hysdn/hysdn_init.c b/drivers/isdn/hysdn/hysdn_init.c
index 9e01748a176e..b7cc5c2f08c6 100644
--- a/drivers/isdn/hysdn/hysdn_init.c
+++ b/drivers/isdn/hysdn/hysdn_init.c
@@ -20,10 +20,15 @@
20#include "hysdn_defs.h" 20#include "hysdn_defs.h"
21 21
22static struct pci_device_id hysdn_pci_tbl[] = { 22static struct pci_device_id hysdn_pci_tbl[] = {
23 {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO}, 23 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
24 {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2}, 24 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_METRO, 0, 0, BD_METRO },
25 {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO}, 25 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
26 {PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX, PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO}, 26 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, 0, 0, BD_CHAMP2 },
27 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
28 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, 0, 0, BD_ERGO },
29 { PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
30 PCI_ANY_ID, PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, 0, 0, BD_ERGO },
31
27 { } /* Terminating entry */ 32 { } /* Terminating entry */
28}; 33};
29MODULE_DEVICE_TABLE(pci, hysdn_pci_tbl); 34MODULE_DEVICE_TABLE(pci, hysdn_pci_tbl);
@@ -34,128 +39,7 @@ MODULE_LICENSE("GPL");
34static char *hysdn_init_revision = "$Revision: 1.6.6.6 $"; 39static char *hysdn_init_revision = "$Revision: 1.6.6.6 $";
35static int cardmax; /* number of found cards */ 40static int cardmax; /* number of found cards */
36hysdn_card *card_root = NULL; /* pointer to first card */ 41hysdn_card *card_root = NULL; /* pointer to first card */
37 42static hysdn_card *card_last = NULL; /* pointer to first card */
38/**********************************************/
39/* table assigning PCI-sub ids to board types */
40/* the last entry contains all 0 */
41/**********************************************/
42static struct {
43 unsigned short subid; /* PCI sub id */
44 unsigned char cardtyp; /* card type assigned */
45} pci_subid_map[] = {
46
47 {
48 PCI_SUBDEVICE_ID_HYPERCOPE_METRO, BD_METRO
49 },
50 {
51 PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2, BD_CHAMP2
52 },
53 {
54 PCI_SUBDEVICE_ID_HYPERCOPE_ERGO, BD_ERGO
55 },
56 {
57 PCI_SUBDEVICE_ID_HYPERCOPE_OLD_ERGO, BD_ERGO
58 },
59 {
60 0, 0
61 } /* terminating entry */
62};
63
64
65/*********************************************************************/
66/* search_cards searches for available cards in the pci config data. */
67/* If a card is found, the card structure is allocated and the cards */
68/* ressources are reserved. cardmax is incremented. */
69/*********************************************************************/
70static void
71search_cards(void)
72{
73 struct pci_dev *akt_pcidev = NULL;
74 hysdn_card *card, *card_last;
75 int i;
76
77 card_root = NULL;
78 card_last = NULL;
79 while ((akt_pcidev = pci_find_device(PCI_VENDOR_ID_HYPERCOPE, PCI_DEVICE_ID_HYPERCOPE_PLX,
80 akt_pcidev)) != NULL) {
81 if (pci_enable_device(akt_pcidev))
82 continue;
83
84 if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
85 printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
86 return;
87 }
88 card->myid = cardmax; /* set own id */
89 card->bus = akt_pcidev->bus->number;
90 card->devfn = akt_pcidev->devfn; /* slot + function */
91 card->subsysid = akt_pcidev->subsystem_device;
92 card->irq = akt_pcidev->irq;
93 card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
94 card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
95 card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
96 card->brdtype = BD_NONE; /* unknown */
97 card->debug_flags = DEF_DEB_FLAGS; /* set default debug */
98 card->faxchans = 0; /* default no fax channels */
99 card->bchans = 2; /* and 2 b-channels */
100 for (i = 0; pci_subid_map[i].subid; i++)
101 if (pci_subid_map[i].subid == card->subsysid) {
102 card->brdtype = pci_subid_map[i].cardtyp;
103 break;
104 }
105 if (card->brdtype != BD_NONE) {
106 if (ergo_inithardware(card)) {
107 printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
108 kfree(card);
109 continue;
110 }
111 } else {
112 printk(KERN_WARNING "HYSDN: unknown card id 0x%04x\n", card->subsysid);
113 kfree(card); /* release mem */
114 continue;
115 }
116 cardmax++;
117 card->next = NULL; /*end of chain */
118 if (card_last)
119 card_last->next = card; /* pointer to next card */
120 else
121 card_root = card;
122 card_last = card; /* new chain end */
123 } /* device found */
124} /* search_cards */
125
126/************************************************************************************/
127/* free_resources frees the acquired PCI resources and returns the allocated memory */
128/************************************************************************************/
129static void
130free_resources(void)
131{
132 hysdn_card *card;
133
134 while (card_root) {
135 card = card_root;
136 if (card->releasehardware)
137 card->releasehardware(card); /* free all hardware resources */
138 card_root = card_root->next; /* remove card from chain */
139 kfree(card); /* return mem */
140
141 } /* while card_root */
142} /* free_resources */
143
144/**************************************************************************/
145/* stop_cards disables (hardware resets) all cards and disables interrupt */
146/**************************************************************************/
147static void
148stop_cards(void)
149{
150 hysdn_card *card;
151
152 card = card_root; /* first in chain */
153 while (card) {
154 if (card->stopcard)
155 card->stopcard(card);
156 card = card->next; /* remove card from chain */
157 } /* while card */
158} /* stop_cards */
159 43
160 44
161/****************************************************************************/ 45/****************************************************************************/
@@ -191,31 +75,138 @@ hysdn_getrev(const char *revision)
191/* and the module is added to the list in /proc/modules, otherwise an error */ 75/* and the module is added to the list in /proc/modules, otherwise an error */
192/* is assumed and the module will not be kept in memory. */ 76/* is assumed and the module will not be kept in memory. */
193/****************************************************************************/ 77/****************************************************************************/
78
79static int __devinit hysdn_pci_init_one(struct pci_dev *akt_pcidev,
80 const struct pci_device_id *ent)
81{
82 hysdn_card *card;
83 int rc;
84
85 rc = pci_enable_device(akt_pcidev);
86 if (rc)
87 return rc;
88
89 if (!(card = kzalloc(sizeof(hysdn_card), GFP_KERNEL))) {
90 printk(KERN_ERR "HYSDN: unable to alloc device mem \n");
91 rc = -ENOMEM;
92 goto err_out;
93 }
94 card->myid = cardmax; /* set own id */
95 card->bus = akt_pcidev->bus->number;
96 card->devfn = akt_pcidev->devfn; /* slot + function */
97 card->subsysid = akt_pcidev->subsystem_device;
98 card->irq = akt_pcidev->irq;
99 card->iobase = pci_resource_start(akt_pcidev, PCI_REG_PLX_IO_BASE);
100 card->plxbase = pci_resource_start(akt_pcidev, PCI_REG_PLX_MEM_BASE);
101 card->membase = pci_resource_start(akt_pcidev, PCI_REG_MEMORY_BASE);
102 card->brdtype = BD_NONE; /* unknown */
103 card->debug_flags = DEF_DEB_FLAGS; /* set default debug */
104 card->faxchans = 0; /* default no fax channels */
105 card->bchans = 2; /* and 2 b-channels */
106 card->brdtype = ent->driver_data;
107
108 if (ergo_inithardware(card)) {
109 printk(KERN_WARNING "HYSDN: card at io 0x%04x already in use\n", card->iobase);
110 rc = -EBUSY;
111 goto err_out_card;
112 }
113
114 cardmax++;
115 card->next = NULL; /*end of chain */
116 if (card_last)
117 card_last->next = card; /* pointer to next card */
118 else
119 card_root = card;
120 card_last = card; /* new chain end */
121
122 pci_set_drvdata(akt_pcidev, card);
123 return 0;
124
125err_out_card:
126 kfree(card);
127err_out:
128 pci_disable_device(akt_pcidev);
129 return rc;
130}
131
132static void __devexit hysdn_pci_remove_one(struct pci_dev *akt_pcidev)
133{
134 hysdn_card *card = pci_get_drvdata(akt_pcidev);
135
136 pci_set_drvdata(akt_pcidev, NULL);
137
138 if (card->stopcard)
139 card->stopcard(card);
140
141#ifdef CONFIG_HYSDN_CAPI
142 hycapi_capi_release(card);
143#endif
144
145 if (card->releasehardware)
146 card->releasehardware(card); /* free all hardware resources */
147
148 if (card == card_root) {
149 card_root = card_root->next;
150 if (!card_root)
151 card_last = NULL;
152 } else {
153 hysdn_card *tmp = card_root;
154 while (tmp) {
155 if (tmp->next == card)
156 tmp->next = card->next;
157 card_last = tmp;
158 tmp = tmp->next;
159 }
160 }
161
162 kfree(card);
163 pci_disable_device(akt_pcidev);
164}
165
166static struct pci_driver hysdn_pci_driver = {
167 .name = "hysdn",
168 .id_table = hysdn_pci_tbl,
169 .probe = hysdn_pci_init_one,
170 .remove = __devexit_p(hysdn_pci_remove_one),
171};
172
173static int hysdn_have_procfs;
174
194static int __init 175static int __init
195hysdn_init(void) 176hysdn_init(void)
196{ 177{
197 char tmp[50]; 178 char tmp[50];
179 int rc;
198 180
199 strcpy(tmp, hysdn_init_revision); 181 strcpy(tmp, hysdn_init_revision);
200 printk(KERN_NOTICE "HYSDN: module Rev: %s loaded\n", hysdn_getrev(tmp)); 182 printk(KERN_NOTICE "HYSDN: module Rev: %s loaded\n", hysdn_getrev(tmp));
201 strcpy(tmp, hysdn_net_revision); 183 strcpy(tmp, hysdn_net_revision);
202 printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp)); 184 printk(KERN_NOTICE "HYSDN: network interface Rev: %s \n", hysdn_getrev(tmp));
203 search_cards(); 185
186 rc = pci_register_driver(&hysdn_pci_driver);
187 if (rc)
188 return rc;
189
204 printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax); 190 printk(KERN_INFO "HYSDN: %d card(s) found.\n", cardmax);
205 191
206 if (hysdn_procconf_init()) { 192 if (!hysdn_procconf_init())
207 free_resources(); /* proc file_sys not created */ 193 hysdn_have_procfs = 1;
208 return (-1); 194
209 }
210#ifdef CONFIG_HYSDN_CAPI 195#ifdef CONFIG_HYSDN_CAPI
211 if(cardmax > 0) { 196 if(cardmax > 0) {
212 if(hycapi_init()) { 197 if(hycapi_init()) {
213 printk(KERN_ERR "HYCAPI: init failed\n"); 198 printk(KERN_ERR "HYCAPI: init failed\n");
214 return(-1); 199
200 if (hysdn_have_procfs)
201 hysdn_procconf_release();
202
203 pci_unregister_driver(&hysdn_pci_driver);
204 return -ESPIPE;
215 } 205 }
216 } 206 }
217#endif /* CONFIG_HYSDN_CAPI */ 207#endif /* CONFIG_HYSDN_CAPI */
218 return (0); /* no error */ 208
209 return 0; /* no error */
219} /* init_module */ 210} /* init_module */
220 211
221 212
@@ -230,20 +221,15 @@ hysdn_init(void)
230static void __exit 221static void __exit
231hysdn_exit(void) 222hysdn_exit(void)
232{ 223{
224 if (hysdn_have_procfs)
225 hysdn_procconf_release();
226
227 pci_unregister_driver(&hysdn_pci_driver);
228
233#ifdef CONFIG_HYSDN_CAPI 229#ifdef CONFIG_HYSDN_CAPI
234 hysdn_card *card;
235#endif /* CONFIG_HYSDN_CAPI */
236 stop_cards();
237#ifdef CONFIG_HYSDN_CAPI
238 card = card_root; /* first in chain */
239 while (card) {
240 hycapi_capi_release(card);
241 card = card->next; /* remove card from chain */
242 } /* while card */
243 hycapi_cleanup(); 230 hycapi_cleanup();
244#endif /* CONFIG_HYSDN_CAPI */ 231#endif /* CONFIG_HYSDN_CAPI */
245 hysdn_procconf_release(); 232
246 free_resources();
247 printk(KERN_NOTICE "HYSDN: module unloaded\n"); 233 printk(KERN_NOTICE "HYSDN: module unloaded\n");
248} /* cleanup_module */ 234} /* cleanup_module */
249 235