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
= NULL
;
66 struct pcilst_struct
*inova
, *last
;
72 for_each_pci_dev(pcidev
) {
73 if (pcidev
->vendor
== pci_vendor
) {
74 inova
= kzalloc(sizeof(*inova
), GFP_KERNEL
);
77 ("icp_multi: pci_card_list_init: allocation failed\n");
82 inova
->pcidev
= pci_dev_get(pcidev
);
86 inova_devices
= inova
;
90 inova
->vendor
= pcidev
->vendor
;
91 inova
->device
= pcidev
->device
;
92 inova
->pci_bus
= pcidev
->bus
->number
;
93 inova
->pci_slot
= PCI_SLOT(pcidev
->devfn
);
94 inova
->pci_func
= PCI_FUNC(pcidev
->devfn
);
95 /* Note: resources may be invalid if PCI device
96 * not enabled, but they are corrected in
98 for (i
= 0; i
< 5; i
++)
100 pci_resource_start(pcidev
, i
);
101 inova
->irq
= pcidev
->irq
;
106 pci_card_list_display();
109 /****************************************************************************/
110 /* free up list of amcc cards in this system */
111 static void pci_card_list_cleanup(unsigned short pci_vendor
)
113 struct pcilst_struct
*inova
, *next
;
115 for (inova
= inova_devices
; inova
; inova
= next
) {
117 pci_dev_put(inova
->pcidev
);
121 inova_devices
= NULL
;
124 /****************************************************************************/
125 /* find first unused card with this device_id */
126 static struct pcilst_struct
*find_free_pci_card_by_device(unsigned short
131 struct pcilst_struct
*inova
, *next
;
133 for (inova
= inova_devices
; inova
; inova
= next
) {
135 if ((!inova
->used
) && (inova
->device
== device_id
)
136 && (inova
->vendor
== vendor_id
))
144 /****************************************************************************/
145 /* find card on requested position */
146 static int find_free_pci_card_by_position(unsigned short vendor_id
,
147 unsigned short device_id
,
148 unsigned short pci_bus
,
149 unsigned short pci_slot
,
150 struct pcilst_struct
**card
)
152 struct pcilst_struct
*inova
, *next
;
155 for (inova
= inova_devices
; inova
; inova
= next
) {
157 if ((inova
->vendor
== vendor_id
) && (inova
->device
== device_id
)
158 && (inova
->pci_bus
== pci_bus
)
159 && (inova
->pci_slot
== pci_slot
)) {
160 if (!(inova
->used
)) {
162 return 0; /* ok, card is found */
164 return 2; /* card exist but is used */
169 return 1; /* no card found */
172 /****************************************************************************/
173 /* mark card as used */
174 static int pci_card_alloc(struct pcilst_struct
*inova
)
179 printk(" - BUG!! inova is NULL!\n");
185 if (comedi_pci_enable(inova
->pcidev
, "icp_multi")) {
186 printk(" - Can't enable PCI device and request regions!\n");
189 /* Resources will be accurate now. */
190 for (i
= 0; i
< 5; i
++)
191 inova
->io_addr
[i
] = pci_resource_start(inova
->pcidev
, i
);
192 inova
->irq
= inova
->pcidev
->irq
;
197 /****************************************************************************/
198 /* mark card as free */
199 static int pci_card_free(struct pcilst_struct
*inova
)
207 comedi_pci_disable(inova
->pcidev
);
211 /****************************************************************************/
212 /* display list of found cards */
213 static void pci_card_list_display(void)
215 struct pcilst_struct
*inova
, *next
;
217 printk("Anne's List of pci cards\n");
218 printk("bus:slot:func vendor device io_inova io_daq irq used\n");
220 for (inova
= inova_devices
; inova
; inova
= next
) {
223 ("%2d %2d %2d 0x%4x 0x%4x 0x%8llx 0x%8llx %2u %2d\n",
224 inova
->pci_bus
, inova
->pci_slot
, inova
->pci_func
,
225 inova
->vendor
, inova
->device
,
226 (unsigned long long)inova
->io_addr
[0],
227 (unsigned long long)inova
->io_addr
[2], inova
->irq
,
233 /****************************************************************************/
234 /* return all card information for driver */
235 static int pci_card_data(struct pcilst_struct
*inova
,
236 unsigned char *pci_bus
, unsigned char *pci_slot
,
237 unsigned char *pci_func
, resource_size_t
* io_addr
,
244 *pci_bus
= inova
->pci_bus
;
245 *pci_slot
= inova
->pci_slot
;
246 *pci_func
= inova
->pci_func
;
247 for (i
= 0; i
< 5; i
++)
248 io_addr
[i
] = inova
->io_addr
[i
];
253 /****************************************************************************/
254 /* select and alloc card */
255 static struct pcilst_struct
*select_and_alloc_pci_card(unsigned short vendor_id
,
256 unsigned short device_id
,
257 unsigned short pci_bus
,
258 unsigned short pci_slot
)
260 struct pcilst_struct
*card
;
263 if ((pci_bus
< 1) & (pci_slot
< 1)) { /* use autodetection */
265 card
= find_free_pci_card_by_device(vendor_id
, device_id
);
267 printk(" - Unused card not found in system!\n");
271 switch (find_free_pci_card_by_position(vendor_id
, device_id
,
276 (" - Card not found on requested position b:s %d:%d!\n",
281 (" - Card on requested position is used b:s %d:%d!\n",
287 err
= pci_card_alloc(card
);
290 printk(" - Can't allocate card!\n");
291 /* else: error already printed. */