6db4831e98
Android 14
778 lines
20 KiB
C
778 lines
20 KiB
C
/* hermes.c
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*
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* Driver core for the "Hermes" wireless MAC controller, as used in
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* the Lucent Orinoco and Cabletron RoamAbout cards. It should also
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* work on the hfa3841 and hfa3842 MAC controller chips used in the
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* Prism II chipsets.
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*
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* This is not a complete driver, just low-level access routines for
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* the MAC controller itself.
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*
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* Based on the prism2 driver from Absolute Value Systems' linux-wlan
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* project, the Linux wvlan_cs driver, Lucent's HCF-Light
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* (wvlan_hcf.c) library, and the NetBSD wireless driver (in no
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* particular order).
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*
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* Copyright (C) 2000, David Gibson, Linuxcare Australia.
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* (C) Copyright David Gibson, IBM Corp. 2001-2003.
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License
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* at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and
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* limitations under the License.
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License version 2 (the "GPL"), in
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* which case the provisions of the GPL are applicable instead of the
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* above. If you wish to allow the use of your version of this file
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* only under the terms of the GPL and not to allow others to use your
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* version of this file under the MPL, indicate your decision by
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* deleting the provisions above and replace them with the notice and
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* other provisions required by the GPL. If you do not delete the
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* provisions above, a recipient may use your version of this file
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* under either the MPL or the GPL.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include "hermes.h"
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/* These are maximum timeouts. Most often, card wil react much faster */
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#define CMD_BUSY_TIMEOUT (100) /* In iterations of ~1us */
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#define CMD_INIT_TIMEOUT (50000) /* in iterations of ~10us */
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#define CMD_COMPL_TIMEOUT (20000) /* in iterations of ~10us */
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#define ALLOC_COMPL_TIMEOUT (1000) /* in iterations of ~10us */
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/*
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* AUX port access. To unlock the AUX port write the access keys to the
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* PARAM0-2 registers, then write HERMES_AUX_ENABLE to the HERMES_CONTROL
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* register. Then read it and make sure it's HERMES_AUX_ENABLED.
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*/
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#define HERMES_AUX_ENABLE 0x8000 /* Enable auxiliary port access */
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#define HERMES_AUX_DISABLE 0x4000 /* Disable to auxiliary port access */
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#define HERMES_AUX_ENABLED 0xC000 /* Auxiliary port is open */
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#define HERMES_AUX_DISABLED 0x0000 /* Auxiliary port is closed */
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#define HERMES_AUX_PW0 0xFE01
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#define HERMES_AUX_PW1 0xDC23
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#define HERMES_AUX_PW2 0xBA45
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/* HERMES_CMD_DOWNLD */
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#define HERMES_PROGRAM_DISABLE (0x0000 | HERMES_CMD_DOWNLD)
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#define HERMES_PROGRAM_ENABLE_VOLATILE (0x0100 | HERMES_CMD_DOWNLD)
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#define HERMES_PROGRAM_ENABLE_NON_VOLATILE (0x0200 | HERMES_CMD_DOWNLD)
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#define HERMES_PROGRAM_NON_VOLATILE (0x0300 | HERMES_CMD_DOWNLD)
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/*
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* Debugging helpers
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*/
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#define DMSG(stuff...) do {printk(KERN_DEBUG "hermes @ %p: " , hw->iobase); \
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printk(stuff); } while (0)
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#undef HERMES_DEBUG
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#ifdef HERMES_DEBUG
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#include <stdarg.h>
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#define DEBUG(lvl, stuff...) if ((lvl) <= HERMES_DEBUG) DMSG(stuff)
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#else /* ! HERMES_DEBUG */
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#define DEBUG(lvl, stuff...) do { } while (0)
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#endif /* ! HERMES_DEBUG */
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static const struct hermes_ops hermes_ops_local;
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/*
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* Internal functions
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*/
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/* Issue a command to the chip. Waiting for it to complete is the caller's
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problem.
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Returns -EBUSY if the command register is busy, 0 on success.
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Callable from any context.
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*/
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static int hermes_issue_cmd(struct hermes *hw, u16 cmd, u16 param0,
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u16 param1, u16 param2)
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{
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int k = CMD_BUSY_TIMEOUT;
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u16 reg;
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/* First wait for the command register to unbusy */
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reg = hermes_read_regn(hw, CMD);
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while ((reg & HERMES_CMD_BUSY) && k) {
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k--;
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udelay(1);
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reg = hermes_read_regn(hw, CMD);
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}
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if (reg & HERMES_CMD_BUSY)
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return -EBUSY;
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hermes_write_regn(hw, PARAM2, param2);
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hermes_write_regn(hw, PARAM1, param1);
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hermes_write_regn(hw, PARAM0, param0);
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hermes_write_regn(hw, CMD, cmd);
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return 0;
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}
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/*
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* Function definitions
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*/
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/* For doing cmds that wipe the magic constant in SWSUPPORT0 */
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static int hermes_doicmd_wait(struct hermes *hw, u16 cmd,
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u16 parm0, u16 parm1, u16 parm2,
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struct hermes_response *resp)
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{
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int err = 0;
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int k;
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u16 status, reg;
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err = hermes_issue_cmd(hw, cmd, parm0, parm1, parm2);
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if (err)
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return err;
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reg = hermes_read_regn(hw, EVSTAT);
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k = CMD_INIT_TIMEOUT;
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while ((!(reg & HERMES_EV_CMD)) && k) {
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k--;
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udelay(10);
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reg = hermes_read_regn(hw, EVSTAT);
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}
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hermes_write_regn(hw, SWSUPPORT0, HERMES_MAGIC);
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if (!hermes_present(hw)) {
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DEBUG(0, "hermes @ 0x%x: Card removed during reset.\n",
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hw->iobase);
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err = -ENODEV;
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goto out;
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}
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if (!(reg & HERMES_EV_CMD)) {
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printk(KERN_ERR "hermes @ %p: "
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"Timeout waiting for card to reset (reg=0x%04x)!\n",
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hw->iobase, reg);
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err = -ETIMEDOUT;
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goto out;
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}
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status = hermes_read_regn(hw, STATUS);
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if (resp) {
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resp->status = status;
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resp->resp0 = hermes_read_regn(hw, RESP0);
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resp->resp1 = hermes_read_regn(hw, RESP1);
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resp->resp2 = hermes_read_regn(hw, RESP2);
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}
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hermes_write_regn(hw, EVACK, HERMES_EV_CMD);
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if (status & HERMES_STATUS_RESULT)
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err = -EIO;
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out:
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return err;
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}
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void hermes_struct_init(struct hermes *hw, void __iomem *address,
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int reg_spacing)
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{
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hw->iobase = address;
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hw->reg_spacing = reg_spacing;
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hw->inten = 0x0;
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hw->eeprom_pda = false;
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hw->ops = &hermes_ops_local;
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}
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EXPORT_SYMBOL(hermes_struct_init);
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static int hermes_init(struct hermes *hw)
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{
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u16 reg;
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int err = 0;
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int k;
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/* We don't want to be interrupted while resetting the chipset */
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hw->inten = 0x0;
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hermes_write_regn(hw, INTEN, 0);
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hermes_write_regn(hw, EVACK, 0xffff);
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/* Normally it's a "can't happen" for the command register to
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be busy when we go to issue a command because we are
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serializing all commands. However we want to have some
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chance of resetting the card even if it gets into a stupid
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state, so we actually wait to see if the command register
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will unbusy itself here. */
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k = CMD_BUSY_TIMEOUT;
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reg = hermes_read_regn(hw, CMD);
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while (k && (reg & HERMES_CMD_BUSY)) {
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if (reg == 0xffff) /* Special case - the card has probably been
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removed, so don't wait for the timeout */
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return -ENODEV;
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k--;
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udelay(1);
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reg = hermes_read_regn(hw, CMD);
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}
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/* No need to explicitly handle the timeout - if we've timed
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out hermes_issue_cmd() will probably return -EBUSY below */
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/* According to the documentation, EVSTAT may contain
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obsolete event occurrence information. We have to acknowledge
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it by writing EVACK. */
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reg = hermes_read_regn(hw, EVSTAT);
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hermes_write_regn(hw, EVACK, reg);
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/* We don't use hermes_docmd_wait here, because the reset wipes
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the magic constant in SWSUPPORT0 away, and it gets confused */
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err = hermes_doicmd_wait(hw, HERMES_CMD_INIT, 0, 0, 0, NULL);
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return err;
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}
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/* Issue a command to the chip, and (busy!) wait for it to
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* complete.
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*
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* Returns:
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* < 0 on internal error
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* 0 on success
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* > 0 on error returned by the firmware
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*
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* Callable from any context, but locking is your problem. */
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static int hermes_docmd_wait(struct hermes *hw, u16 cmd, u16 parm0,
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struct hermes_response *resp)
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{
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int err;
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int k;
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u16 reg;
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u16 status;
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err = hermes_issue_cmd(hw, cmd, parm0, 0, 0);
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if (err) {
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if (!hermes_present(hw)) {
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if (net_ratelimit())
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printk(KERN_WARNING "hermes @ %p: "
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"Card removed while issuing command "
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"0x%04x.\n", hw->iobase, cmd);
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err = -ENODEV;
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} else
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if (net_ratelimit())
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printk(KERN_ERR "hermes @ %p: "
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"Error %d issuing command 0x%04x.\n",
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hw->iobase, err, cmd);
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goto out;
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}
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reg = hermes_read_regn(hw, EVSTAT);
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k = CMD_COMPL_TIMEOUT;
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while ((!(reg & HERMES_EV_CMD)) && k) {
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k--;
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udelay(10);
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reg = hermes_read_regn(hw, EVSTAT);
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}
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if (!hermes_present(hw)) {
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printk(KERN_WARNING "hermes @ %p: Card removed "
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"while waiting for command 0x%04x completion.\n",
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hw->iobase, cmd);
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err = -ENODEV;
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goto out;
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}
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if (!(reg & HERMES_EV_CMD)) {
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printk(KERN_ERR "hermes @ %p: Timeout waiting for "
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"command 0x%04x completion.\n", hw->iobase, cmd);
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err = -ETIMEDOUT;
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goto out;
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}
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status = hermes_read_regn(hw, STATUS);
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if (resp) {
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resp->status = status;
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resp->resp0 = hermes_read_regn(hw, RESP0);
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resp->resp1 = hermes_read_regn(hw, RESP1);
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resp->resp2 = hermes_read_regn(hw, RESP2);
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}
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hermes_write_regn(hw, EVACK, HERMES_EV_CMD);
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if (status & HERMES_STATUS_RESULT)
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err = -EIO;
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out:
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return err;
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}
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static int hermes_allocate(struct hermes *hw, u16 size, u16 *fid)
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{
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int err = 0;
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int k;
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u16 reg;
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if ((size < HERMES_ALLOC_LEN_MIN) || (size > HERMES_ALLOC_LEN_MAX))
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return -EINVAL;
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err = hermes_docmd_wait(hw, HERMES_CMD_ALLOC, size, NULL);
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if (err)
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return err;
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reg = hermes_read_regn(hw, EVSTAT);
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k = ALLOC_COMPL_TIMEOUT;
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while ((!(reg & HERMES_EV_ALLOC)) && k) {
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k--;
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udelay(10);
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reg = hermes_read_regn(hw, EVSTAT);
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}
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if (!hermes_present(hw)) {
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printk(KERN_WARNING "hermes @ %p: "
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"Card removed waiting for frame allocation.\n",
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hw->iobase);
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return -ENODEV;
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}
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if (!(reg & HERMES_EV_ALLOC)) {
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printk(KERN_ERR "hermes @ %p: "
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"Timeout waiting for frame allocation\n",
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hw->iobase);
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return -ETIMEDOUT;
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}
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*fid = hermes_read_regn(hw, ALLOCFID);
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hermes_write_regn(hw, EVACK, HERMES_EV_ALLOC);
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return 0;
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}
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/* Set up a BAP to read a particular chunk of data from card's internal buffer.
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*
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* Returns:
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* < 0 on internal failure (errno)
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* 0 on success
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* > 0 on error
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* from firmware
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*
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* Callable from any context */
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static int hermes_bap_seek(struct hermes *hw, int bap, u16 id, u16 offset)
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{
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int sreg = bap ? HERMES_SELECT1 : HERMES_SELECT0;
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int oreg = bap ? HERMES_OFFSET1 : HERMES_OFFSET0;
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int k;
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u16 reg;
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/* Paranoia.. */
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if ((offset > HERMES_BAP_OFFSET_MAX) || (offset % 2))
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return -EINVAL;
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k = HERMES_BAP_BUSY_TIMEOUT;
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reg = hermes_read_reg(hw, oreg);
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while ((reg & HERMES_OFFSET_BUSY) && k) {
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k--;
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udelay(1);
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reg = hermes_read_reg(hw, oreg);
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}
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if (reg & HERMES_OFFSET_BUSY)
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return -ETIMEDOUT;
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/* Now we actually set up the transfer */
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hermes_write_reg(hw, sreg, id);
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hermes_write_reg(hw, oreg, offset);
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/* Wait for the BAP to be ready */
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k = HERMES_BAP_BUSY_TIMEOUT;
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reg = hermes_read_reg(hw, oreg);
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while ((reg & (HERMES_OFFSET_BUSY | HERMES_OFFSET_ERR)) && k) {
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k--;
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udelay(1);
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reg = hermes_read_reg(hw, oreg);
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}
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if (reg != offset) {
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printk(KERN_ERR "hermes @ %p: BAP%d offset %s: "
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"reg=0x%x id=0x%x offset=0x%x\n", hw->iobase, bap,
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(reg & HERMES_OFFSET_BUSY) ? "timeout" : "error",
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reg, id, offset);
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if (reg & HERMES_OFFSET_BUSY)
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return -ETIMEDOUT;
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return -EIO; /* error or wrong offset */
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}
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return 0;
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}
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/* Read a block of data from the chip's buffer, via the
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* BAP. Synchronization/serialization is the caller's problem. len
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* must be even.
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*
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* Returns:
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* < 0 on internal failure (errno)
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* 0 on success
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* > 0 on error from firmware
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*/
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static int hermes_bap_pread(struct hermes *hw, int bap, void *buf, int len,
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u16 id, u16 offset)
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{
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int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
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int err = 0;
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if ((len < 0) || (len % 2))
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return -EINVAL;
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err = hermes_bap_seek(hw, bap, id, offset);
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if (err)
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goto out;
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/* Actually do the transfer */
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hermes_read_words(hw, dreg, buf, len / 2);
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out:
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return err;
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}
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/* Write a block of data to the chip's buffer, via the
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* BAP. Synchronization/serialization is the caller's problem.
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*
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* Returns:
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* < 0 on internal failure (errno)
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* 0 on success
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* > 0 on error from firmware
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*/
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static int hermes_bap_pwrite(struct hermes *hw, int bap, const void *buf,
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int len, u16 id, u16 offset)
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{
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int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
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int err = 0;
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if (len < 0)
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return -EINVAL;
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err = hermes_bap_seek(hw, bap, id, offset);
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if (err)
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goto out;
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/* Actually do the transfer */
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hermes_write_bytes(hw, dreg, buf, len);
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out:
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return err;
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}
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/* Read a Length-Type-Value record from the card.
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*
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* If length is NULL, we ignore the length read from the card, and
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* read the entire buffer regardless. This is useful because some of
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* the configuration records appear to have incorrect lengths in
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* practice.
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*
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* Callable from user or bh context. */
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static int hermes_read_ltv(struct hermes *hw, int bap, u16 rid,
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unsigned bufsize, u16 *length, void *buf)
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{
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int err = 0;
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int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
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u16 rlength, rtype;
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unsigned nwords;
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if (bufsize % 2)
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return -EINVAL;
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err = hermes_docmd_wait(hw, HERMES_CMD_ACCESS, rid, NULL);
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if (err)
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return err;
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err = hermes_bap_seek(hw, bap, rid, 0);
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if (err)
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return err;
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rlength = hermes_read_reg(hw, dreg);
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if (!rlength)
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return -ENODATA;
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rtype = hermes_read_reg(hw, dreg);
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if (length)
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*length = rlength;
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if (rtype != rid)
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printk(KERN_WARNING "hermes @ %p: %s(): "
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"rid (0x%04x) does not match type (0x%04x)\n",
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hw->iobase, __func__, rid, rtype);
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if (HERMES_RECLEN_TO_BYTES(rlength) > bufsize)
|
|
printk(KERN_WARNING "hermes @ %p: "
|
|
"Truncating LTV record from %d to %d bytes. "
|
|
"(rid=0x%04x, len=0x%04x)\n", hw->iobase,
|
|
HERMES_RECLEN_TO_BYTES(rlength), bufsize, rid, rlength);
|
|
|
|
nwords = min((unsigned)rlength - 1, bufsize / 2);
|
|
hermes_read_words(hw, dreg, buf, nwords);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hermes_write_ltv(struct hermes *hw, int bap, u16 rid,
|
|
u16 length, const void *value)
|
|
{
|
|
int dreg = bap ? HERMES_DATA1 : HERMES_DATA0;
|
|
int err = 0;
|
|
unsigned count;
|
|
|
|
if (length == 0)
|
|
return -EINVAL;
|
|
|
|
err = hermes_bap_seek(hw, bap, rid, 0);
|
|
if (err)
|
|
return err;
|
|
|
|
hermes_write_reg(hw, dreg, length);
|
|
hermes_write_reg(hw, dreg, rid);
|
|
|
|
count = length - 1;
|
|
|
|
hermes_write_bytes(hw, dreg, value, count << 1);
|
|
|
|
err = hermes_docmd_wait(hw, HERMES_CMD_ACCESS | HERMES_CMD_WRITE,
|
|
rid, NULL);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*** Hermes AUX control ***/
|
|
|
|
static inline void
|
|
hermes_aux_setaddr(struct hermes *hw, u32 addr)
|
|
{
|
|
hermes_write_reg(hw, HERMES_AUXPAGE, (u16) (addr >> 7));
|
|
hermes_write_reg(hw, HERMES_AUXOFFSET, (u16) (addr & 0x7F));
|
|
}
|
|
|
|
static inline int
|
|
hermes_aux_control(struct hermes *hw, int enabled)
|
|
{
|
|
int desired_state = enabled ? HERMES_AUX_ENABLED : HERMES_AUX_DISABLED;
|
|
int action = enabled ? HERMES_AUX_ENABLE : HERMES_AUX_DISABLE;
|
|
int i;
|
|
|
|
/* Already open? */
|
|
if (hermes_read_reg(hw, HERMES_CONTROL) == desired_state)
|
|
return 0;
|
|
|
|
hermes_write_reg(hw, HERMES_PARAM0, HERMES_AUX_PW0);
|
|
hermes_write_reg(hw, HERMES_PARAM1, HERMES_AUX_PW1);
|
|
hermes_write_reg(hw, HERMES_PARAM2, HERMES_AUX_PW2);
|
|
hermes_write_reg(hw, HERMES_CONTROL, action);
|
|
|
|
for (i = 0; i < 20; i++) {
|
|
udelay(10);
|
|
if (hermes_read_reg(hw, HERMES_CONTROL) ==
|
|
desired_state)
|
|
return 0;
|
|
}
|
|
|
|
return -EBUSY;
|
|
}
|
|
|
|
/*** Hermes programming ***/
|
|
|
|
/* About to start programming data (Hermes I)
|
|
* offset is the entry point
|
|
*
|
|
* Spectrum_cs' Symbol fw does not require this
|
|
* wl_lkm Agere fw does
|
|
* Don't know about intersil
|
|
*/
|
|
static int hermesi_program_init(struct hermes *hw, u32 offset)
|
|
{
|
|
int err;
|
|
|
|
/* Disable interrupts?*/
|
|
/*hw->inten = 0x0;*/
|
|
/*hermes_write_regn(hw, INTEN, 0);*/
|
|
/*hermes_set_irqmask(hw, 0);*/
|
|
|
|
/* Acknowledge any outstanding command */
|
|
hermes_write_regn(hw, EVACK, 0xFFFF);
|
|
|
|
/* Using init_cmd_wait rather than cmd_wait */
|
|
err = hw->ops->init_cmd_wait(hw,
|
|
0x0100 | HERMES_CMD_INIT,
|
|
0, 0, 0, NULL);
|
|
if (err)
|
|
return err;
|
|
|
|
err = hw->ops->init_cmd_wait(hw,
|
|
0x0000 | HERMES_CMD_INIT,
|
|
0, 0, 0, NULL);
|
|
if (err)
|
|
return err;
|
|
|
|
err = hermes_aux_control(hw, 1);
|
|
pr_debug("AUX enable returned %d\n", err);
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
pr_debug("Enabling volatile, EP 0x%08x\n", offset);
|
|
err = hw->ops->init_cmd_wait(hw,
|
|
HERMES_PROGRAM_ENABLE_VOLATILE,
|
|
offset & 0xFFFFu,
|
|
offset >> 16,
|
|
0,
|
|
NULL);
|
|
pr_debug("PROGRAM_ENABLE returned %d\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
/* Done programming data (Hermes I)
|
|
*
|
|
* Spectrum_cs' Symbol fw does not require this
|
|
* wl_lkm Agere fw does
|
|
* Don't know about intersil
|
|
*/
|
|
static int hermesi_program_end(struct hermes *hw)
|
|
{
|
|
struct hermes_response resp;
|
|
int rc = 0;
|
|
int err;
|
|
|
|
rc = hw->ops->cmd_wait(hw, HERMES_PROGRAM_DISABLE, 0, &resp);
|
|
|
|
pr_debug("PROGRAM_DISABLE returned %d, "
|
|
"r0 0x%04x, r1 0x%04x, r2 0x%04x\n",
|
|
rc, resp.resp0, resp.resp1, resp.resp2);
|
|
|
|
if ((rc == 0) &&
|
|
((resp.status & HERMES_STATUS_CMDCODE) != HERMES_CMD_DOWNLD))
|
|
rc = -EIO;
|
|
|
|
err = hermes_aux_control(hw, 0);
|
|
pr_debug("AUX disable returned %d\n", err);
|
|
|
|
/* Acknowledge any outstanding command */
|
|
hermes_write_regn(hw, EVACK, 0xFFFF);
|
|
|
|
/* Reinitialise, ignoring return */
|
|
(void) hw->ops->init_cmd_wait(hw, 0x0000 | HERMES_CMD_INIT,
|
|
0, 0, 0, NULL);
|
|
|
|
return rc ? rc : err;
|
|
}
|
|
|
|
static int hermes_program_bytes(struct hermes *hw, const char *data,
|
|
u32 addr, u32 len)
|
|
{
|
|
/* wl lkm splits the programming into chunks of 2000 bytes.
|
|
* This restriction appears to come from USB. The PCMCIA
|
|
* adapters can program the whole lot in one go */
|
|
hermes_aux_setaddr(hw, addr);
|
|
hermes_write_bytes(hw, HERMES_AUXDATA, data, len);
|
|
return 0;
|
|
}
|
|
|
|
/* Read PDA from the adapter */
|
|
static int hermes_read_pda(struct hermes *hw, __le16 *pda, u32 pda_addr,
|
|
u16 pda_len)
|
|
{
|
|
int ret;
|
|
u16 pda_size;
|
|
u16 data_len = pda_len;
|
|
__le16 *data = pda;
|
|
|
|
if (hw->eeprom_pda) {
|
|
/* PDA of spectrum symbol is in eeprom */
|
|
|
|
/* Issue command to read EEPROM */
|
|
ret = hw->ops->cmd_wait(hw, HERMES_CMD_READMIF, 0, NULL);
|
|
if (ret)
|
|
return ret;
|
|
} else {
|
|
/* wl_lkm does not include PDA size in the PDA area.
|
|
* We will pad the information into pda, so other routines
|
|
* don't have to be modified */
|
|
pda[0] = cpu_to_le16(pda_len - 2);
|
|
/* Includes CFG_PROD_DATA but not itself */
|
|
pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */
|
|
data_len = pda_len - 4;
|
|
data = pda + 2;
|
|
}
|
|
|
|
/* Open auxiliary port */
|
|
ret = hermes_aux_control(hw, 1);
|
|
pr_debug("AUX enable returned %d\n", ret);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Read PDA */
|
|
hermes_aux_setaddr(hw, pda_addr);
|
|
hermes_read_words(hw, HERMES_AUXDATA, data, data_len / 2);
|
|
|
|
/* Close aux port */
|
|
ret = hermes_aux_control(hw, 0);
|
|
pr_debug("AUX disable returned %d\n", ret);
|
|
|
|
/* Check PDA length */
|
|
pda_size = le16_to_cpu(pda[0]);
|
|
pr_debug("Actual PDA length %d, Max allowed %d\n",
|
|
pda_size, pda_len);
|
|
if (pda_size > pda_len)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void hermes_lock_irqsave(spinlock_t *lock,
|
|
unsigned long *flags) __acquires(lock)
|
|
{
|
|
spin_lock_irqsave(lock, *flags);
|
|
}
|
|
|
|
static void hermes_unlock_irqrestore(spinlock_t *lock,
|
|
unsigned long *flags) __releases(lock)
|
|
{
|
|
spin_unlock_irqrestore(lock, *flags);
|
|
}
|
|
|
|
static void hermes_lock_irq(spinlock_t *lock) __acquires(lock)
|
|
{
|
|
spin_lock_irq(lock);
|
|
}
|
|
|
|
static void hermes_unlock_irq(spinlock_t *lock) __releases(lock)
|
|
{
|
|
spin_unlock_irq(lock);
|
|
}
|
|
|
|
/* Hermes operations for local buses */
|
|
static const struct hermes_ops hermes_ops_local = {
|
|
.init = hermes_init,
|
|
.cmd_wait = hermes_docmd_wait,
|
|
.init_cmd_wait = hermes_doicmd_wait,
|
|
.allocate = hermes_allocate,
|
|
.read_ltv = hermes_read_ltv,
|
|
.write_ltv = hermes_write_ltv,
|
|
.bap_pread = hermes_bap_pread,
|
|
.bap_pwrite = hermes_bap_pwrite,
|
|
.read_pda = hermes_read_pda,
|
|
.program_init = hermesi_program_init,
|
|
.program_end = hermesi_program_end,
|
|
.program = hermes_program_bytes,
|
|
.lock_irqsave = hermes_lock_irqsave,
|
|
.unlock_irqrestore = hermes_unlock_irqrestore,
|
|
.lock_irq = hermes_lock_irq,
|
|
.unlock_irq = hermes_unlock_irq,
|
|
};
|