2 comedi/drivers/icp_multi.h
6 Author: Anne Smorthit <anne.smorthit@sfwte.ch>
13 #include "../comedidev.h"
14 #include "comedi_pci.h"
16 /****************************************************************************/
18 struct pcilst_struct {
19 struct pcilst_struct *next;
21 struct pci_dev *pcidev;
22 unsigned short vendor;
23 unsigned short device;
24 unsigned char pci_bus;
25 unsigned char pci_slot;
26 unsigned char pci_func;
27 resource_size_t io_addr[5];
31 struct pcilst_struct *inova_devices;
32 /* ptr to root list of all Inova devices */
34 /****************************************************************************/
36 static void pci_card_list_init(unsigned short pci_vendor, char display);
37 static void pci_card_list_cleanup(unsigned short pci_vendor);
38 static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
42 static int find_free_pci_card_by_position(unsigned short vendor_id,
43 unsigned short device_id,
44 unsigned short pci_bus,
45 unsigned short pci_slot,
46 struct pcilst_struct **card);
47 static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
48 unsigned short device_id,
49 unsigned short pci_bus,
50 unsigned short pci_slot);
52 static int pci_card_alloc(struct pcilst_struct *amcc);
53 static int pci_card_free(struct pcilst_struct *amcc);
54 static void pci_card_list_display(void);
55 static int pci_card_data(struct pcilst_struct *amcc,
56 unsigned char *pci_bus, unsigned char *pci_slot,
57 unsigned char *pci_func, resource_size_t * io_addr,
60 /****************************************************************************/
62 /* build list of Inova cards in this system */
63 static void pci_card_list_init(unsigned short pci_vendor, char display)
65 struct pci_dev *pcidev;
66 struct pcilst_struct *inova, *last;
72 for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
74 pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
75 if (pcidev->vendor == pci_vendor) {
76 inova = kzalloc(sizeof(*inova), GFP_KERNEL);
79 ("icp_multi: pci_card_list_init: allocation failed\n");
84 inova->pcidev = pci_dev_get(pcidev);
88 inova_devices = inova;
92 inova->vendor = pcidev->vendor;
93 inova->device = pcidev->device;
94 inova->pci_bus = pcidev->bus->number;
95 inova->pci_slot = PCI_SLOT(pcidev->devfn);
96 inova->pci_func = PCI_FUNC(pcidev->devfn);
97 /* Note: resources may be invalid if PCI device
98 * not enabled, but they are corrected in
100 for (i = 0; i < 5; i++)
102 pci_resource_start(pcidev, i);
103 inova->irq = pcidev->irq;
108 pci_card_list_display();
111 /****************************************************************************/
112 /* free up list of amcc cards in this system */
113 static void pci_card_list_cleanup(unsigned short pci_vendor)
115 struct pcilst_struct *inova, *next;
117 for (inova = inova_devices; inova; inova = next) {
119 pci_dev_put(inova->pcidev);
123 inova_devices = NULL;
126 /****************************************************************************/
127 /* find first unused card with this device_id */
128 static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
133 struct pcilst_struct *inova, *next;
135 for (inova = inova_devices; inova; inova = next) {
137 if ((!inova->used) && (inova->device == device_id)
138 && (inova->vendor == vendor_id))
146 /****************************************************************************/
147 /* find card on requested position */
148 static int find_free_pci_card_by_position(unsigned short vendor_id,
149 unsigned short device_id,
150 unsigned short pci_bus,
151 unsigned short pci_slot,
152 struct pcilst_struct **card)
154 struct pcilst_struct *inova, *next;
157 for (inova = inova_devices; inova; inova = next) {
159 if ((inova->vendor == vendor_id) && (inova->device == device_id)
160 && (inova->pci_bus == pci_bus)
161 && (inova->pci_slot == pci_slot)) {
162 if (!(inova->used)) {
164 return 0; /* ok, card is found */
166 return 2; /* card exist but is used */
171 return 1; /* no card found */
174 /****************************************************************************/
175 /* mark card as used */
176 static int pci_card_alloc(struct pcilst_struct *inova)
181 printk(" - BUG!! inova is NULL!\n");
187 if (comedi_pci_enable(inova->pcidev, "icp_multi")) {
188 printk(" - Can't enable PCI device and request regions!\n");
191 /* Resources will be accurate now. */
192 for (i = 0; i < 5; i++)
193 inova->io_addr[i] = pci_resource_start(inova->pcidev, i);
194 inova->irq = inova->pcidev->irq;
199 /****************************************************************************/
200 /* mark card as free */
201 static int pci_card_free(struct pcilst_struct *inova)
209 comedi_pci_disable(inova->pcidev);
213 /****************************************************************************/
214 /* display list of found cards */
215 static void pci_card_list_display(void)
217 struct pcilst_struct *inova, *next;
219 printk("Anne's List of pci cards\n");
220 printk("bus:slot:func vendor device io_inova io_daq irq used\n");
222 for (inova = inova_devices; inova; inova = next) {
225 ("%2d %2d %2d 0x%4x 0x%4x 0x%8llx 0x%8llx %2u %2d\n",
226 inova->pci_bus, inova->pci_slot, inova->pci_func,
227 inova->vendor, inova->device,
228 (unsigned long long)inova->io_addr[0],
229 (unsigned long long)inova->io_addr[2], inova->irq,
235 /****************************************************************************/
236 /* return all card information for driver */
237 static int pci_card_data(struct pcilst_struct *inova,
238 unsigned char *pci_bus, unsigned char *pci_slot,
239 unsigned char *pci_func, resource_size_t * io_addr,
246 *pci_bus = inova->pci_bus;
247 *pci_slot = inova->pci_slot;
248 *pci_func = inova->pci_func;
249 for (i = 0; i < 5; i++)
250 io_addr[i] = inova->io_addr[i];
255 /****************************************************************************/
256 /* select and alloc card */
257 static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
258 unsigned short device_id,
259 unsigned short pci_bus,
260 unsigned short pci_slot)
262 struct pcilst_struct *card;
265 if ((pci_bus < 1) & (pci_slot < 1)) { /* use autodetection */
267 card = find_free_pci_card_by_device(vendor_id, device_id);
269 printk(" - Unused card not found in system!\n");
273 switch (find_free_pci_card_by_position(vendor_id, device_id,
278 (" - Card not found on requested position b:s %d:%d!\n",
283 (" - Card on requested position is used b:s %d:%d!\n",
289 err = pci_card_alloc(card);
292 printk(" - Can't allocate card!\n");
293 /* else: error already printed. */