Staging: comedi: add icp_multi driver
This adds the icp_multi driver to the tree. From: Anne Smorthit <anne.smorthit@sfwte.ch> Cc: David Schleef <ds@schleef.org> Cc: Frank Mori Hess <fmhess@users.sourceforge.net> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Anne Smorthit
Greg Kroah-Hartman
parent
6fd15040a6
commit
96341f7153
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@ -9,6 +9,7 @@ obj-$(CONFIG_COMEDI) += comedi_parport.o
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# Comedi PCI drivers
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obj-$(CONFIG_COMEDI_PCI_DRIVERS) += mite.o
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obj-$(CONFIG_COMEDI_PCI_DRIVERS) += icp_multi.o
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# Comedi USB drivers
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obj-$(CONFIG_COMEDI_USB_DRIVERS) += usbdux.o
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,278 @@
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/*
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comedi/drivers/icp_multi.h
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Stuff for ICP Multi
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Author: Anne Smorthit <anne.smorthit@sfwte.ch>
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*/
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#ifndef _ICP_MULTI_H_
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#define _ICP_MULTI_H_
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#include "../comedidev.h"
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#include "comedi_pci.h"
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/****************************************************************************/
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struct pcilst_struct {
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struct pcilst_struct *next;
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int used;
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struct pci_dev *pcidev;
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unsigned short vendor;
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unsigned short device;
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unsigned char pci_bus;
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unsigned char pci_slot;
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unsigned char pci_func;
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resource_size_t io_addr[5];
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unsigned int irq;
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};
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struct pcilst_struct *inova_devices; // ptr to root list of all Inova devices
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/****************************************************************************/
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static void pci_card_list_init(unsigned short pci_vendor, char display);
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static void pci_card_list_cleanup(unsigned short pci_vendor);
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static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
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vendor_id, unsigned short device_id);
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static int find_free_pci_card_by_position(unsigned short vendor_id,
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unsigned short device_id, unsigned short pci_bus,
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unsigned short pci_slot, struct pcilst_struct **card);
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static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
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unsigned short device_id, unsigned short pci_bus,
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unsigned short pci_slot);
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static int pci_card_alloc(struct pcilst_struct *amcc);
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static int pci_card_free(struct pcilst_struct *amcc);
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static void pci_card_list_display(void);
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static int pci_card_data(struct pcilst_struct *amcc,
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unsigned char *pci_bus, unsigned char *pci_slot,
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unsigned char *pci_func, resource_size_t * io_addr, unsigned int *irq);
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/****************************************************************************/
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/* build list of Inova cards in this system */
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static void pci_card_list_init(unsigned short pci_vendor, char display)
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{
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struct pci_dev *pcidev;
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struct pcilst_struct *inova, *last;
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int i;
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inova_devices = NULL;
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last = NULL;
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for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
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pcidev != NULL;
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pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
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if (pcidev->vendor == pci_vendor) {
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inova = kmalloc(sizeof(*inova), GFP_KERNEL);
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if (!inova) {
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printk("icp_multi: pci_card_list_init: allocation failed\n");
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pci_dev_put(pcidev);
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break;
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}
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memset(inova, 0, sizeof(*inova));
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inova->pcidev = pci_dev_get(pcidev);
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if (last) {
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last->next = inova;
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} else {
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inova_devices = inova;
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}
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last = inova;
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inova->vendor = pcidev->vendor;
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inova->device = pcidev->device;
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inova->pci_bus = pcidev->bus->number;
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inova->pci_slot = PCI_SLOT(pcidev->devfn);
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inova->pci_func = PCI_FUNC(pcidev->devfn);
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/* Note: resources may be invalid if PCI device
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* not enabled, but they are corrected in
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* pci_card_alloc. */
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for (i = 0; i < 5; i++)
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inova->io_addr[i] =
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pci_resource_start(pcidev, i);
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inova->irq = pcidev->irq;
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}
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}
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if (display)
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pci_card_list_display();
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}
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/****************************************************************************/
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/* free up list of amcc cards in this system */
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static void pci_card_list_cleanup(unsigned short pci_vendor)
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{
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struct pcilst_struct *inova, *next;
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for (inova = inova_devices; inova; inova = next) {
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next = inova->next;
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pci_dev_put(inova->pcidev);
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kfree(inova);
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}
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inova_devices = NULL;
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}
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/****************************************************************************/
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/* find first unused card with this device_id */
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static struct pcilst_struct *find_free_pci_card_by_device(unsigned short
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vendor_id, unsigned short device_id)
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{
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struct pcilst_struct *inova, *next;
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for (inova = inova_devices; inova; inova = next) {
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next = inova->next;
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if ((!inova->used) && (inova->device == device_id)
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&& (inova->vendor == vendor_id))
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return inova;
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}
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return NULL;
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}
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/****************************************************************************/
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/* find card on requested position */
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static int find_free_pci_card_by_position(unsigned short vendor_id,
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unsigned short device_id, unsigned short pci_bus,
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unsigned short pci_slot, struct pcilst_struct **card)
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{
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struct pcilst_struct *inova, *next;
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*card = NULL;
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for (inova = inova_devices; inova; inova = next) {
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next = inova->next;
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if ((inova->vendor == vendor_id) && (inova->device == device_id)
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&& (inova->pci_bus == pci_bus)
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&& (inova->pci_slot == pci_slot)) {
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if (!(inova->used)) {
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*card = inova;
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return 0; // ok, card is found
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} else {
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return 2; // card exist but is used
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}
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}
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}
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return 1; // no card found
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}
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/****************************************************************************/
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/* mark card as used */
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static int pci_card_alloc(struct pcilst_struct *inova)
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{
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int i;
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if (!inova) {
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rt_printk(" - BUG!! inova is NULL!\n");
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return -1;
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}
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if (inova->used)
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return 1;
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if (comedi_pci_enable(inova->pcidev, "icp_multi")) {
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rt_printk(" - Can't enable PCI device and request regions!\n");
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return -1;
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}
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/* Resources will be accurate now. */
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for (i = 0; i < 5; i++)
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inova->io_addr[i] = pci_resource_start(inova->pcidev, i);
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inova->irq = inova->pcidev->irq;
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inova->used = 1;
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return 0;
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}
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/****************************************************************************/
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/* mark card as free */
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static int pci_card_free(struct pcilst_struct *inova)
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{
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if (!inova)
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return -1;
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if (!inova->used)
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return 1;
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inova->used = 0;
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comedi_pci_disable(inova->pcidev);
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return 0;
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}
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/****************************************************************************/
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/* display list of found cards */
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static void pci_card_list_display(void)
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{
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struct pcilst_struct *inova, *next;
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printk("Anne's List of pci cards\n");
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printk("bus:slot:func vendor device io_inova io_daq irq used\n");
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for (inova = inova_devices; inova; inova = next) {
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next = inova->next;
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printk("%2d %2d %2d 0x%4x 0x%4x 0x%8llx 0x%8llx %2u %2d\n", inova->pci_bus, inova->pci_slot, inova->pci_func, inova->vendor, inova->device, (unsigned long long)inova->io_addr[0], (unsigned long long)inova->io_addr[2], inova->irq, inova->used);
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}
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}
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/****************************************************************************/
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/* return all card information for driver */
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static int pci_card_data(struct pcilst_struct *inova,
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unsigned char *pci_bus, unsigned char *pci_slot,
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unsigned char *pci_func, resource_size_t * io_addr, unsigned int *irq)
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{
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int i;
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if (!inova)
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return -1;
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*pci_bus = inova->pci_bus;
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*pci_slot = inova->pci_slot;
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*pci_func = inova->pci_func;
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for (i = 0; i < 5; i++)
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io_addr[i] = inova->io_addr[i];
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*irq = inova->irq;
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return 0;
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}
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/****************************************************************************/
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/* select and alloc card */
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static struct pcilst_struct *select_and_alloc_pci_card(unsigned short vendor_id,
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unsigned short device_id, unsigned short pci_bus,
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unsigned short pci_slot)
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{
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struct pcilst_struct *card;
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int err;
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if ((pci_bus < 1) & (pci_slot < 1)) { // use autodetection
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if ((card = find_free_pci_card_by_device(vendor_id,
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device_id)) == NULL) {
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rt_printk(" - Unused card not found in system!\n");
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return NULL;
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}
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} else {
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switch (find_free_pci_card_by_position(vendor_id, device_id,
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pci_bus, pci_slot, &card)) {
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case 1:
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rt_printk
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(" - Card not found on requested position b:s %d:%d!\n",
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pci_bus, pci_slot);
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return NULL;
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case 2:
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rt_printk
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(" - Card on requested position is used b:s %d:%d!\n",
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pci_bus, pci_slot);
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return NULL;
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}
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}
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if ((err = pci_card_alloc(card)) != 0) {
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if (err > 0)
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rt_printk(" - Can't allocate card!\n");
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/* else: error already printed. */
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return NULL;
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}
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return card;
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}
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#endif
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