diff options
Diffstat (limited to 'drivers/staging/wlan-ng/prism2_pci.c')
| -rw-r--r-- | drivers/staging/wlan-ng/prism2_pci.c | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/drivers/staging/wlan-ng/prism2_pci.c b/drivers/staging/wlan-ng/prism2_pci.c new file mode 100644 index 000000000000..afe32dfbf6b1 --- /dev/null +++ b/drivers/staging/wlan-ng/prism2_pci.c @@ -0,0 +1,332 @@ +#define WLAN_HOSTIF WLAN_PCI +#include "hfa384x.c" +#include "prism2mgmt.c" +#include "prism2mib.c" +#include "prism2sta.c" + +#define PCI_SIZE 0x1000 /* Memory size - 4K bytes */ + +/* ISL3874A 11Mb/s WLAN controller */ +#define PCIVENDOR_INTERSIL 0x1260UL +#define PCIDEVICE_ISL3874 0x3873UL /* [MSM] yeah I know...the ID says + 3873. Trust me, it's a 3874. */ + +/* Samsung SWL-2210P 11Mb/s WLAN controller (uses ISL3874A) */ +#define PCIVENDOR_SAMSUNG 0x167dUL +#define PCIDEVICE_SWL_2210P 0xa000UL + +#define PCIVENDOR_NETGEAR 0x1385UL /* for MA311 */ + +/* PCI Class & Sub-Class code, Network-'Other controller' */ +#define PCI_CLASS_NETWORK_OTHERS 0x280 + + +/*---------------------------------------------------------------- +* prism2sta_probe_pci +* +* Probe routine called when a PCI device w/ matching ID is found. +* The ISL3874 implementation uses the following map: +* BAR0: Prism2.x registers memory mapped, size=4k +* Here's the sequence: +* - Allocate the PCI resources. +* - Read the PCMCIA attribute memory to make sure we have a WLAN card +* - Reset the MAC +* - Initialize the netdev and wlan data +* - Initialize the MAC +* +* Arguments: +* pdev ptr to pci device structure containing info about +* pci configuration. +* id ptr to the device id entry that matched this device. +* +* Returns: +* zero - success +* negative - failed +* +* Side effects: +* +* +* Call context: +* process thread +* +----------------------------------------------------------------*/ +static int __devinit +prism2sta_probe_pci( + struct pci_dev *pdev, + const struct pci_device_id *id) +{ + int result; + phys_t phymem = 0; + void __iomem *mem = NULL; + wlandevice_t *wlandev = NULL; + hfa384x_t *hw = NULL; + + DBFENTER; + + /* Enable the pci device */ + if (pci_enable_device(pdev)) { + WLAN_LOG_ERROR("%s: pci_enable_device() failed.\n", dev_info); + result = -EIO; + goto fail; + } + + /* Figure out our resources */ + phymem = pci_resource_start(pdev, 0); + + if (!request_mem_region(phymem, pci_resource_len(pdev, 0), "Prism2")) { + printk(KERN_ERR "prism2: Cannot reserve PCI memory region\n"); + result = -EIO; + goto fail; + } + + mem = ioremap(phymem, PCI_SIZE); + if ( mem == 0 ) { + WLAN_LOG_ERROR("%s: ioremap() failed.\n", dev_info); + result = -EIO; + goto fail; + } + + /* Log the device */ + WLAN_LOG_INFO("A Prism2.5 PCI device found, " + "phymem:0x%llx, irq:%d, mem:0x%p\n", + (unsigned long long)phymem, pdev->irq, mem); + + if ((wlandev = create_wlan()) == NULL) { + WLAN_LOG_ERROR("%s: Memory allocation failure.\n", dev_info); + result = -EIO; + goto fail; + } + hw = wlandev->priv; + + if ( wlan_setup(wlandev) != 0 ) { + WLAN_LOG_ERROR("%s: wlan_setup() failed.\n", dev_info); + result = -EIO; + goto fail; + } + + /* Setup netdevice's ability to report resources + * Note: the netdevice was allocated by wlan_setup() + */ + wlandev->netdev->irq = pdev->irq; + wlandev->netdev->mem_start = (unsigned long) mem; + wlandev->netdev->mem_end = wlandev->netdev->mem_start + + pci_resource_len(pdev, 0); + + /* Initialize the hw data */ + hfa384x_create(hw, wlandev->netdev->irq, 0, mem); + hw->wlandev = wlandev; + + /* Register the wlandev, this gets us a name and registers the + * linux netdevice. + */ + SET_MODULE_OWNER(wlandev->netdev); +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) + SET_NETDEV_DEV(wlandev->netdev, &(pdev->dev)); +#endif + if ( register_wlandev(wlandev) != 0 ) { + WLAN_LOG_ERROR("%s: register_wlandev() failed.\n", dev_info); + result = -EIO; + goto fail; + } + +#if 0 + /* TODO: Move this and an irq test into an hfa384x_testif() routine. + */ + outw(PRISM2STA_MAGIC, HFA384x_SWSUPPORT(wlandev->netdev->base_addr)); + reg=inw( HFA384x_SWSUPPORT(wlandev->netdev->base_addr)); + if ( reg != PRISM2STA_MAGIC ) { + WLAN_LOG_ERROR("MAC register access test failed!\n"); + result = -EIO; + goto fail; + } +#endif + + /* Do a chip-level reset on the MAC */ + if (prism2_doreset) { + result = hfa384x_corereset(hw, + prism2_reset_holdtime, + prism2_reset_settletime, 0); + if (result != 0) { + WLAN_LOG_ERROR( + "%s: hfa384x_corereset() failed.\n", + dev_info); + unregister_wlandev(wlandev); + hfa384x_destroy(hw); + result = -EIO; + goto fail; + } + } + + pci_set_drvdata(pdev, wlandev); + + /* Shouldn't actually hook up the IRQ until we + * _know_ things are alright. A test routine would help. + */ + request_irq(wlandev->netdev->irq, hfa384x_interrupt, + SA_SHIRQ, wlandev->name, wlandev); + + wlandev->msdstate = WLAN_MSD_HWPRESENT; + + result = 0; + goto done; + + fail: + pci_set_drvdata(pdev, NULL); + if (wlandev) kfree(wlandev); + if (hw) kfree(hw); + if (mem) iounmap(mem); + pci_release_regions(pdev); + pci_disable_device(pdev); + + done: + DBFEXIT; + return result; +} + +static void __devexit prism2sta_remove_pci(struct pci_dev *pdev) +{ + wlandevice_t *wlandev; + hfa384x_t *hw; + + wlandev = (wlandevice_t *) pci_get_drvdata(pdev); + hw = wlandev->priv; + + p80211netdev_hwremoved(wlandev); + + /* reset hardware */ + prism2sta_ifstate(wlandev, P80211ENUM_ifstate_disable); + + if (pdev->irq) + free_irq(pdev->irq, wlandev); + + unregister_wlandev(wlandev); + + /* free local stuff */ + if (hw) { + hfa384x_destroy(hw); + kfree(hw); + } + + iounmap((void __iomem *)wlandev->netdev->mem_start); + wlan_unsetup(wlandev); + + pci_release_regions(pdev); + pci_disable_device(pdev); + pci_set_drvdata(pdev, NULL); + + kfree(wlandev); +} + + +static struct pci_device_id pci_id_tbl[] = { + { + PCIVENDOR_INTERSIL, PCIDEVICE_ISL3874, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, + /* Driver data, we just put the name here */ + (unsigned long)"Intersil Prism2.5 ISL3874 11Mb/s WLAN Controller" + }, + { + PCIVENDOR_INTERSIL, 0x3872, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, + /* Driver data, we just put the name here */ + (unsigned long)"Intersil Prism2.5 ISL3872 11Mb/s WLAN Controller" + }, + { + PCIVENDOR_SAMSUNG, PCIDEVICE_SWL_2210P, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, + /* Driver data, we just put the name here */ + (unsigned long)"Samsung MagicLAN SWL-2210P 11Mb/s WLAN Controller" + }, + { /* for NetGear MA311 */ + PCIVENDOR_NETGEAR, 0x3872, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, + /* Driver data, we just put the name here */ + (unsigned long)"Netgear MA311 WLAN Controller" + }, + { + 0, 0, 0, 0, 0, 0, 0 + } +}; + +MODULE_DEVICE_TABLE(pci, pci_id_tbl); + +/* Function declared here because of ptr reference below */ +static int __devinit prism2sta_probe_pci(struct pci_dev *pdev, + const struct pci_device_id *id); +static void __devexit prism2sta_remove_pci(struct pci_dev *pdev); + +static struct pci_driver prism2_pci_drv_id = { + .name = "prism2_pci", + .id_table = pci_id_tbl, + .probe = prism2sta_probe_pci, + .remove = prism2sta_remove_pci, +#ifdef CONFIG_PM + .suspend = prism2sta_suspend_pci, + .resume = prism2sta_resume_pci, +#endif +}; + +#ifdef MODULE + +static int __init prism2pci_init(void) +{ + WLAN_LOG_NOTICE("%s Loaded\n", version); + return pci_module_init(&prism2_pci_drv_id); +}; + +static void __exit prism2pci_cleanup(void) +{ + pci_unregister_driver(&prism2_pci_drv_id); +}; + +module_init(prism2pci_init); +module_exit(prism2pci_cleanup); + +#endif + +int hfa384x_corereset(hfa384x_t *hw, int holdtime, int settletime, int genesis) +{ + int result = 0; + unsigned long timeout; + UINT16 reg; + DBFENTER; + + /* Assert reset and wait awhile + * (note: these delays are _really_ long, but they appear to be + * necessary.) + */ + hfa384x_setreg(hw, 0xc5, HFA384x_PCICOR); + timeout = jiffies + HZ/4; + while(time_before(jiffies, timeout)) udelay(5); + + if (genesis) { + hfa384x_setreg(hw, genesis, HFA384x_PCIHCR); + timeout = jiffies + HZ/4; + while(time_before(jiffies, timeout)) udelay(5); + } + + /* Clear the reset and wait some more + */ + hfa384x_setreg(hw, 0x45, HFA384x_PCICOR); + timeout = jiffies + HZ/2; + while(time_before(jiffies, timeout)) udelay(5); + + /* Wait for f/w to complete initialization (CMD:BUSY == 0) + */ + timeout = jiffies + 2*HZ; + reg = hfa384x_getreg(hw, HFA384x_CMD); + while ( HFA384x_CMD_ISBUSY(reg) && time_before( jiffies, timeout) ) { + reg = hfa384x_getreg(hw, HFA384x_CMD); + udelay(10); + } + if (HFA384x_CMD_ISBUSY(reg)) { + WLAN_LOG_WARNING("corereset: Timed out waiting for cmd register.\n"); + result=1; + } + DBFEXIT; + return result; +} |