drivers/net/fddi/skfp/skfddi.c

Source file repositories/reference/linux-study-clean/drivers/net/fddi/skfp/skfddi.c

File Facts

System
Linux kernel
Corpus path
drivers/net/fddi/skfp/skfddi.c
Extension
.c
Size
64278 bytes
Lines
2235
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

static const struct net_device_ops skfp_netdev_ops = {
	.ndo_open		= skfp_open,
	.ndo_stop		= skfp_close,
	.ndo_start_xmit		= skfp_send_pkt,
	.ndo_get_stats		= skfp_ctl_get_stats,
	.ndo_set_rx_mode	= skfp_ctl_set_multicast_list,
	.ndo_set_mac_address	= skfp_ctl_set_mac_address,
	.ndo_siocdevprivate	= skfp_siocdevprivate,
};

/*
 * =================
 * = skfp_init_one =
 * =================
 *   
 * Overview:
 *   Probes for supported FDDI PCI controllers
 *  
 * Returns:
 *   Condition code
 *       
 * Arguments:
 *   pdev - pointer to PCI device information
 *
 * Functional Description:
 *   This is now called by PCI driver registration process
 *   for each board found.
 *   
 * Return Codes:
 *   0           - This device (fddi0, fddi1, etc) configured successfully
 *   -ENODEV - No devices present, or no SysKonnect FDDI PCI device
 *                         present for this device name
 *
 *
 * Side Effects:
 *   Device structures for FDDI adapters (fddi0, fddi1, etc) are
 *   initialized and the board resources are read and stored in
 *   the device structure.
 */
static int skfp_init_one(struct pci_dev *pdev,
				const struct pci_device_id *ent)
{
	struct net_device *dev;
	struct s_smc *smc;	/* board pointer */
	void __iomem *mem;
	int err;

	pr_debug("entering skfp_init_one\n");

	if (num_boards == 0) 
		printk("%s\n", boot_msg);

	err = pci_enable_device(pdev);
	if (err)
		return err;

	err = pci_request_regions(pdev, "skfddi");
	if (err)
		goto err_out1;

	pci_set_master(pdev);

#ifdef MEM_MAPPED_IO
	if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
		printk(KERN_ERR "skfp: region is not an MMIO resource\n");
		err = -EIO;
		goto err_out2;
	}

	mem = ioremap(pci_resource_start(pdev, 0), 0x4000);
#else
	if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) {
		printk(KERN_ERR "skfp: region is not PIO resource\n");
		err = -EIO;
		goto err_out2;
	}

	mem = ioport_map(pci_resource_start(pdev, 1), FP_IO_LEN);
#endif
	if (!mem) {
		printk(KERN_ERR "skfp:  Unable to map register, "
				"FDDI adapter will be disabled.\n");
		err = -EIO;
		goto err_out2;
	}

	dev = alloc_fddidev(sizeof(struct s_smc));
	if (!dev) {
		printk(KERN_ERR "skfp: Unable to allocate fddi device, "
				"FDDI adapter will be disabled.\n");

Annotation

Implementation Notes