diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k.c')
| -rw-r--r-- | qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k.c b/qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k.c new file mode 100644 index 000000000..183aa65f6 --- /dev/null +++ b/qemu/roms/ipxe/src/drivers/net/ath/ath9k/ath9k.c @@ -0,0 +1,208 @@ +/* + * Copyright (c) 2008-2011 Atheros Communications Inc. + * + * Modified for iPXE by Scott K Logan <logans@cottsay.net> July 2011 + * Original from Linux kernel 3.0.1 + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <ipxe/pci.h> + +#include "ath9k.h" + +static struct pci_device_id ath_pci_id_table[] = { + PCI_ROM(0x168c, 0x0023, "ar5416", "Atheros 5416 PCI", 0), /* PCI */ + PCI_ROM(0x168c, 0x0024, "ar5416", "Atheros 5416 PCI-E", 0), /* PCI-E */ + PCI_ROM(0x168c, 0x0027, "ar9160", "Atheros 9160 PCI", 0), /* PCI */ + PCI_ROM(0x168c, 0x0029, "ar9280", "Atheros 9280 PCI", 0), /* PCI */ + PCI_ROM(0x168c, 0x002A, "ar9280", "Atheros 9280 PCI-E", 0), /* PCI-E */ + PCI_ROM(0x168c, 0x002B, "ar9285", "Atheros 9285 PCI-E", 0), /* PCI-E */ + PCI_ROM(0x168c, 0x002C, "ar2427", "Atheros 2427 PCI-E", 0), /* PCI-E 802.11n bonded out */ + PCI_ROM(0x168c, 0x002D, "ar9287", "Atheros 9287 PCI", 0), /* PCI */ + PCI_ROM(0x168c, 0x002E, "ar9287", "Atheros 9287 PCI-E", 0), /* PCI-E */ + PCI_ROM(0x168c, 0x0030, "ar9300", "Atheros 9300 PCI-E", 0), /* PCI-E AR9300 */ + PCI_ROM(0x168c, 0x0032, "ar9485", "Atheros 9485 PCI-E", 0), /* PCI-E AR9485 */ +}; + + +/* return bus cachesize in 4B word units */ +static void ath_pci_read_cachesize(struct ath_common *common, int *csz) +{ + struct ath_softc *sc = (struct ath_softc *) common->priv; + u8 u8tmp; + + pci_read_config_byte(sc->pdev, PCI_CACHE_LINE_SIZE, &u8tmp); + *csz = (int)u8tmp; + + /* + * This check was put in to avoid "unpleasant" consequences if + * the bootrom has not fully initialized all PCI devices. + * Sometimes the cache line size register is not set + */ + + if (*csz == 0) + *csz = DEFAULT_CACHELINE >> 2; /* Use the default size */ +} + +static int ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data) +{ + struct ath_hw *ah = (struct ath_hw *) common->ah; + + common->ops->read(ah, AR5416_EEPROM_OFFSET + + (off << AR5416_EEPROM_S)); + + if (!ath9k_hw_wait(ah, + AR_EEPROM_STATUS_DATA, + AR_EEPROM_STATUS_DATA_BUSY | + AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, + AH_WAIT_TIMEOUT)) { + return 0; + } + + *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), + AR_EEPROM_STATUS_DATA_VAL); + + return 1; +} + +static void ath_pci_extn_synch_enable(struct ath_common *common) +{ + struct ath_softc *sc = (struct ath_softc *) common->priv; + struct pci_device *pdev = sc->pdev; + u8 lnkctl; + + pci_read_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, &lnkctl); + lnkctl |= 0x0080; + pci_write_config_byte(pdev, sc->sc_ah->caps.pcie_lcr_offset, lnkctl); +} + +static const struct ath_bus_ops ath_pci_bus_ops = { + .ath_bus_type = ATH_PCI, + .read_cachesize = ath_pci_read_cachesize, + .eeprom_read = ath_pci_eeprom_read, + .extn_synch_en = ath_pci_extn_synch_enable, +}; + +static int ath_pci_probe(struct pci_device *pdev) +{ + void *mem; + struct ath_softc *sc; + struct net80211_device *dev; + u8 csz; + u16 subsysid; + u32 val; + int ret = 0; + char hw_name[64]; + + adjust_pci_device(pdev); + + /* + * Cache line size is used to size and align various + * structures used to communicate with the hardware. + */ + pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &csz); + if (csz == 0) { + /* + * Linux 2.4.18 (at least) writes the cache line size + * register as a 16-bit wide register which is wrong. + * We must have this setup properly for rx buffer + * DMA to work so force a reasonable value here if it + * comes up zero. + */ + csz =16; + pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, csz); + } + /* + * The default setting of latency timer yields poor results, + * set it to the value used by other systems. It may be worth + * tweaking this setting more. + */ + pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xa8); + + /* + * Disable the RETRY_TIMEOUT register (0x41) to keep + * PCI Tx retries from interfering with C3 CPU state. + */ + pci_read_config_dword(pdev, 0x40, &val); + if ((val & 0x0000ff00) != 0) + pci_write_config_dword(pdev, 0x40, val & 0xffff00ff); + + mem = ioremap(pdev->membase, 0x10000); + if (!mem) { + DBG("ath9K: PCI memory map error\n") ; + ret = -EIO; + goto err_iomap; + } + + dev = net80211_alloc(sizeof(struct ath_softc)); + if (!dev) { + DBG("ath9k: No memory for net80211_device\n"); + ret = -ENOMEM; + goto err_alloc_hw; + } + + pci_set_drvdata(pdev, dev); + dev->netdev->dev = (struct device *)pdev; + + sc = dev->priv; + sc->dev = dev; + sc->pdev = pdev; + sc->mem = mem; + + /* Will be cleared in ath9k_start() */ + sc->sc_flags |= SC_OP_INVALID; + + sc->irq = pdev->irq; + + pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &subsysid); + ret = ath9k_init_device(pdev->device, sc, subsysid, &ath_pci_bus_ops); + if (ret) { + DBG("ath9k: Failed to initialize device\n"); + goto err_init; + } + + ath9k_hw_name(sc->sc_ah, hw_name, sizeof(hw_name)); + DBG("ath9k: %s mem=0x%lx, irq=%d\n", + hw_name, (unsigned long)mem, pdev->irq); + + return 0; + +err_init: + net80211_free(dev); +err_alloc_hw: + iounmap(mem); +err_iomap: + return ret; +} + +static void ath_pci_remove(struct pci_device *pdev) +{ + struct net80211_device *dev = pci_get_drvdata(pdev); + struct ath_softc *sc = dev->priv; + void *mem = sc->mem; + + if (!is_ath9k_unloaded) + sc->sc_ah->ah_flags |= AH_UNPLUGGED; + ath9k_deinit_device(sc); + net80211_free(sc->dev); + + iounmap(mem); +} + +struct pci_driver ath_pci_driver __pci_driver = { + .id_count = ARRAY_SIZE(ath_pci_id_table), + .ids = ath_pci_id_table, + .probe = ath_pci_probe, + .remove = ath_pci_remove, +}; |