--- /dev/null
+/*
+ * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
+ * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
+ *
+ * Permission to use, copy, modify, and 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.
+ *
+ */
+
+/*************************************\
+* Attach/Detach Functions and helpers *
+\*************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include "ath5k.h"
+#include "reg.h"
+#include "debug.h"
+
+/**
+ * ath5k_hw_post() - Power On Self Test helper function
+ * @ah: The &struct ath5k_hw
+ */
+static int ath5k_hw_post(struct ath5k_hw *ah)
+{
+
+ static const u32 static_pattern[4] = {
+ 0x55555555, 0xaaaaaaaa,
+ 0x66666666, 0x99999999
+ };
+ static const u16 regs[2] = { AR5K_STA_ID0, AR5K_PHY(8) };
+ int i, c;
+ u16 cur_reg;
+ u32 var_pattern;
+ u32 init_val;
+ u32 cur_val;
+
+ for (c = 0; c < 2; c++) {
+
+ cur_reg = regs[c];
+
+ /* Save previous value */
+ init_val = ath5k_hw_reg_read(ah, cur_reg);
+
+ for (i = 0; i < 256; i++) {
+ var_pattern = i << 16 | i;
+ ath5k_hw_reg_write(ah, var_pattern, cur_reg);
+ cur_val = ath5k_hw_reg_read(ah, cur_reg);
+
+ if (cur_val != var_pattern) {
+ ATH5K_ERR(ah, "POST Failed !!!\n");
+ return -EAGAIN;
+ }
+
+ /* Found on ndiswrapper dumps */
+ var_pattern = 0x0039080f;
+ ath5k_hw_reg_write(ah, var_pattern, cur_reg);
+ }
+
+ for (i = 0; i < 4; i++) {
+ var_pattern = static_pattern[i];
+ ath5k_hw_reg_write(ah, var_pattern, cur_reg);
+ cur_val = ath5k_hw_reg_read(ah, cur_reg);
+
+ if (cur_val != var_pattern) {
+ ATH5K_ERR(ah, "POST Failed !!!\n");
+ return -EAGAIN;
+ }
+
+ /* Found on ndiswrapper dumps */
+ var_pattern = 0x003b080f;
+ ath5k_hw_reg_write(ah, var_pattern, cur_reg);
+ }
+
+ /* Restore previous value */
+ ath5k_hw_reg_write(ah, init_val, cur_reg);
+
+ }
+
+ return 0;
+
+}
+
+/**
+ * ath5k_hw_init() - Check if hw is supported and init the needed structs
+ * @ah: The &struct ath5k_hw associated with the device
+ *
+ * Check if the device is supported, perform a POST and initialize the needed
+ * structs. Returns -ENOMEM if we don't have memory for the needed structs,
+ * -ENODEV if the device is not supported or prints an error msg if something
+ * else went wrong.
+ */
+int ath5k_hw_init(struct ath5k_hw *ah)
+{
+ static const u8 zero_mac[ETH_ALEN] = { };
+ struct ath_common *common = ath5k_hw_common(ah);
+ struct pci_dev *pdev = ah->pdev;
+ struct ath5k_eeprom_info *ee;
+ int ret;
+ u32 srev;
+
+ /*
+ * HW information
+ */
+ ah->ah_bwmode = AR5K_BWMODE_DEFAULT;
+ ah->ah_txpower.txp_tpc = AR5K_TUNE_TPC_TXPOWER;
+ ah->ah_imr = 0;
+ ah->ah_retry_short = AR5K_INIT_RETRY_SHORT;
+ ah->ah_retry_long = AR5K_INIT_RETRY_LONG;
+ ah->ah_ant_mode = AR5K_ANTMODE_DEFAULT;
+ ah->ah_noise_floor = -95; /* until first NF calibration is run */
+ ah->ani_state.ani_mode = ATH5K_ANI_MODE_AUTO;
+ ah->ah_current_channel = &ah->channels[0];
+
+ /*
+ * Find the mac version
+ */
+ ath5k_hw_read_srev(ah);
+ srev = ah->ah_mac_srev;
+ if (srev < AR5K_SREV_AR5311)
+ ah->ah_version = AR5K_AR5210;
+ else if (srev < AR5K_SREV_AR5212)
+ ah->ah_version = AR5K_AR5211;
+ else
+ ah->ah_version = AR5K_AR5212;
+
+ /* Get the MAC version */
+ ah->ah_mac_version = AR5K_REG_MS(srev, AR5K_SREV_VER);
+
+ /* Fill the ath5k_hw struct with the needed functions */
+ ret = ath5k_hw_init_desc_functions(ah);
+ if (ret)
+ goto err;
+
+ /* Bring device out of sleep and reset its units */
+ ret = ath5k_hw_nic_wakeup(ah, NULL);
+ if (ret)
+ goto err;
+
+ /* Get PHY and RADIO revisions */
+ ah->ah_phy_revision = ath5k_hw_reg_read(ah, AR5K_PHY_CHIP_ID) &
+ 0xffffffff;
+ ah->ah_radio_5ghz_revision = ath5k_hw_radio_revision(ah,
+ IEEE80211_BAND_5GHZ);
+
+ /* Try to identify radio chip based on its srev */
+ switch (ah->ah_radio_5ghz_revision & 0xf0) {
+ case AR5K_SREV_RAD_5111:
+ ah->ah_radio = AR5K_RF5111;
+ ah->ah_single_chip = false;
+ ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
+ IEEE80211_BAND_2GHZ);
+ break;
+ case AR5K_SREV_RAD_5112:
+ case AR5K_SREV_RAD_2112:
+ ah->ah_radio = AR5K_RF5112;
+ ah->ah_single_chip = false;
+ ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
+ IEEE80211_BAND_2GHZ);
+ break;
+ case AR5K_SREV_RAD_2413:
+ ah->ah_radio = AR5K_RF2413;
+ ah->ah_single_chip = true;
+ break;
+ case AR5K_SREV_RAD_5413:
+ ah->ah_radio = AR5K_RF5413;
+ ah->ah_single_chip = true;
+ break;
+ case AR5K_SREV_RAD_2316:
+ ah->ah_radio = AR5K_RF2316;
+ ah->ah_single_chip = true;
+ break;
+ case AR5K_SREV_RAD_2317:
+ ah->ah_radio = AR5K_RF2317;
+ ah->ah_single_chip = true;
+ break;
+ case AR5K_SREV_RAD_5424:
+ if (ah->ah_mac_version == AR5K_SREV_AR2425 ||
+ ah->ah_mac_version == AR5K_SREV_AR2417) {
+ ah->ah_radio = AR5K_RF2425;
+ ah->ah_single_chip = true;
+ } else {
+ ah->ah_radio = AR5K_RF5413;
+ ah->ah_single_chip = true;
+ }
+ break;
+ default:
+ /* Identify radio based on mac/phy srev */
+ if (ah->ah_version == AR5K_AR5210) {
+ ah->ah_radio = AR5K_RF5110;
+ ah->ah_single_chip = false;
+ } else if (ah->ah_version == AR5K_AR5211) {
+ ah->ah_radio = AR5K_RF5111;
+ ah->ah_single_chip = false;
+ ah->ah_radio_2ghz_revision = ath5k_hw_radio_revision(ah,
+ IEEE80211_BAND_2GHZ);
+ } else if (ah->ah_mac_version == (AR5K_SREV_AR2425 >> 4) ||
+ ah->ah_mac_version == (AR5K_SREV_AR2417 >> 4) ||
+ ah->ah_phy_revision == AR5K_SREV_PHY_2425) {
+ ah->ah_radio = AR5K_RF2425;
+ ah->ah_single_chip = true;
+ ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2425;
+ } else if (srev == AR5K_SREV_AR5213A &&
+ ah->ah_phy_revision == AR5K_SREV_PHY_5212B) {
+ ah->ah_radio = AR5K_RF5112;
+ ah->ah_single_chip = false;
+ ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5112B;
+ } else if (ah->ah_mac_version == (AR5K_SREV_AR2415 >> 4) ||
+ ah->ah_mac_version == (AR5K_SREV_AR2315_R6 >> 4)) {
+ ah->ah_radio = AR5K_RF2316;
+ ah->ah_single_chip = true;
+ ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2316;
+ } else if (ah->ah_mac_version == (AR5K_SREV_AR5414 >> 4) ||
+ ah->ah_phy_revision == AR5K_SREV_PHY_5413) {
+ ah->ah_radio = AR5K_RF5413;
+ ah->ah_single_chip = true;
+ ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_5413;
+ } else if (ah->ah_mac_version == (AR5K_SREV_AR2414 >> 4) ||
+ ah->ah_phy_revision == AR5K_SREV_PHY_2413) {
+ ah->ah_radio = AR5K_RF2413;
+ ah->ah_single_chip = true;
+ ah->ah_radio_5ghz_revision = AR5K_SREV_RAD_2413;
+ } else {
+ ATH5K_ERR(ah, "Couldn't identify radio revision.\n");
+ ret = -ENODEV;
+ goto err;
+ }
+ }
+
+
+ /* Return on unsupported chips (unsupported eeprom etc) */
+ if ((srev >= AR5K_SREV_AR5416) && (srev < AR5K_SREV_AR2425)) {
+ ATH5K_ERR(ah, "Device not yet supported.\n");
+ ret = -ENODEV;
+ goto err;
+ }
+
+ /*
+ * POST
+ */
+ ret = ath5k_hw_post(ah);
+ if (ret)
+ goto err;
+
+ /* Enable pci core retry fix on Hainan (5213A) and later chips */
+ if (srev >= AR5K_SREV_AR5213A)
+ AR5K_REG_ENABLE_BITS(ah, AR5K_PCICFG, AR5K_PCICFG_RETRY_FIX);
+
+ /*
+ * Get card capabilities, calibration values etc
+ * TODO: EEPROM work
+ */
+ ret = ath5k_eeprom_init(ah);
+ if (ret) {
+ ATH5K_ERR(ah, "unable to init EEPROM\n");
+ goto err;
+ }
+
+ ee = &ah->ah_capabilities.cap_eeprom;
+
+ /*
+ * Write PCI-E power save settings
+ */
+ if ((ah->ah_version == AR5K_AR5212) && pdev && (pci_is_pcie(pdev))) {
+ ath5k_hw_reg_write(ah, 0x9248fc00, AR5K_PCIE_SERDES);
+ ath5k_hw_reg_write(ah, 0x24924924, AR5K_PCIE_SERDES);
+
+ /* Shut off RX when elecidle is asserted */
+ ath5k_hw_reg_write(ah, 0x28000039, AR5K_PCIE_SERDES);
+ ath5k_hw_reg_write(ah, 0x53160824, AR5K_PCIE_SERDES);
+
+ /* If serdes programming is enabled, increase PCI-E
+ * tx power for systems with long trace from host
+ * to minicard connector. */
+ if (ee->ee_serdes)
+ ath5k_hw_reg_write(ah, 0xe5980579, AR5K_PCIE_SERDES);
+ else
+ ath5k_hw_reg_write(ah, 0xf6800579, AR5K_PCIE_SERDES);
+
+ /* Shut off PLL and CLKREQ active in L1 */
+ ath5k_hw_reg_write(ah, 0x001defff, AR5K_PCIE_SERDES);
+
+ /* Preserve other settings */
+ ath5k_hw_reg_write(ah, 0x1aaabe40, AR5K_PCIE_SERDES);
+ ath5k_hw_reg_write(ah, 0xbe105554, AR5K_PCIE_SERDES);
+ ath5k_hw_reg_write(ah, 0x000e3007, AR5K_PCIE_SERDES);
+
+ /* Reset SERDES to load new settings */
+ ath5k_hw_reg_write(ah, 0x00000000, AR5K_PCIE_SERDES_RESET);
+ usleep_range(1000, 1500);
+ }
+
+ /* Get misc capabilities */
+ ret = ath5k_hw_set_capabilities(ah);
+ if (ret) {
+ ATH5K_ERR(ah, "unable to get device capabilities\n");
+ goto err;
+ }
+
+ /* Crypto settings */
+ common->keymax = (ah->ah_version == AR5K_AR5210 ?
+ AR5K_KEYTABLE_SIZE_5210 : AR5K_KEYTABLE_SIZE_5211);
+
+ if (srev >= AR5K_SREV_AR5212_V4 &&
+ (ee->ee_version < AR5K_EEPROM_VERSION_5_0 ||
+ !AR5K_EEPROM_AES_DIS(ee->ee_misc5)))
+ common->crypt_caps |= ATH_CRYPT_CAP_CIPHER_AESCCM;
+
+ if (srev >= AR5K_SREV_AR2414) {
+ common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
+ AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,
+ AR5K_MISC_MODE_COMBINED_MIC);
+ }
+
+ /* MAC address is cleared until add_interface */
+ ath5k_hw_set_lladdr(ah, zero_mac);
+
+ /* Set BSSID to bcast address: ff:ff:ff:ff:ff:ff for now */
+ memcpy(common->curbssid, ath_bcast_mac, ETH_ALEN);
+ ath5k_hw_set_bssid(ah);
+ ath5k_hw_set_opmode(ah, ah->opmode);
+
+ ath5k_hw_rfgain_opt_init(ah);
+
+ ath5k_hw_init_nfcal_hist(ah);
+
+ /* turn on HW LEDs */
+ ath5k_hw_set_ledstate(ah, AR5K_LED_INIT);
+
+ return 0;
+err:
+ return ret;
+}
+
+/**
+ * ath5k_hw_deinit() - Free the &struct ath5k_hw
+ * @ah: The &struct ath5k_hw
+ */
+void ath5k_hw_deinit(struct ath5k_hw *ah)
+{
+ __set_bit(ATH_STAT_INVALID, ah->status);
+
+ kfree(ah->ah_rf_banks);
+
+ ath5k_eeprom_detach(ah);
+
+ /* assume interrupts are down */
+}
Code Review / kvmfornfv.git / blobdiff