forked from Minki/linux
aa21c004f8
There seems to be no reason for a separate structure; move it all into struct lbs_private. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
973 lines
24 KiB
C
973 lines
24 KiB
C
/*
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Driver for the Marvell 8385 based compact flash WLAN cards.
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(C) 2007 by Holger Schurig <hs4233@mail.mn-solutions.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/moduleparam.h>
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#include <linux/firmware.h>
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#include <linux/netdevice.h>
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#include <pcmcia/cs_types.h>
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#include <pcmcia/cs.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ds.h>
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#include <linux/io.h>
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#define DRV_NAME "libertas_cs"
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#include "decl.h"
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#include "defs.h"
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#include "dev.h"
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/********************************************************************/
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/* Module stuff */
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/********************************************************************/
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MODULE_AUTHOR("Holger Schurig <hs4233@mail.mn-solutions.de>");
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MODULE_DESCRIPTION("Driver for Marvell 83xx compact flash WLAN cards");
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MODULE_LICENSE("GPL");
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/********************************************************************/
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/* Data structures */
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/********************************************************************/
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struct if_cs_card {
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struct pcmcia_device *p_dev;
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struct lbs_private *priv;
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void __iomem *iobase;
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};
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/********************************************************************/
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/* Hardware access */
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/********************************************************************/
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/* This define enables wrapper functions which allow you
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to dump all register accesses. You normally won't this,
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except for development */
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/* #define DEBUG_IO */
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#ifdef DEBUG_IO
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static int debug_output = 0;
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#else
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/* This way the compiler optimizes the printk's away */
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#define debug_output 0
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#endif
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static inline unsigned int if_cs_read8(struct if_cs_card *card, uint reg)
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{
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unsigned int val = ioread8(card->iobase + reg);
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if (debug_output)
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printk(KERN_INFO "##inb %08x<%02x\n", reg, val);
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return val;
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}
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static inline unsigned int if_cs_read16(struct if_cs_card *card, uint reg)
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{
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unsigned int val = ioread16(card->iobase + reg);
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if (debug_output)
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printk(KERN_INFO "##inw %08x<%04x\n", reg, val);
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return val;
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}
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static inline void if_cs_read16_rep(
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struct if_cs_card *card,
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uint reg,
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void *buf,
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unsigned long count)
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{
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if (debug_output)
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printk(KERN_INFO "##insw %08x<(0x%lx words)\n",
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reg, count);
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ioread16_rep(card->iobase + reg, buf, count);
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}
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static inline void if_cs_write8(struct if_cs_card *card, uint reg, u8 val)
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{
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if (debug_output)
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printk(KERN_INFO "##outb %08x>%02x\n", reg, val);
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iowrite8(val, card->iobase + reg);
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}
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static inline void if_cs_write16(struct if_cs_card *card, uint reg, u16 val)
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{
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if (debug_output)
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printk(KERN_INFO "##outw %08x>%04x\n", reg, val);
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iowrite16(val, card->iobase + reg);
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}
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static inline void if_cs_write16_rep(
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struct if_cs_card *card,
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uint reg,
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void *buf,
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unsigned long count)
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{
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if (debug_output)
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printk(KERN_INFO "##outsw %08x>(0x%lx words)\n",
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reg, count);
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iowrite16_rep(card->iobase + reg, buf, count);
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}
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/*
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* I know that polling/delaying is frowned upon. However, this procedure
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* with polling is needed while downloading the firmware. At this stage,
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* the hardware does unfortunately not create any interrupts.
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*
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* Fortunately, this function is never used once the firmware is in
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* the card. :-)
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*
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* As a reference, see the "Firmware Specification v5.1", page 18
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* and 19. I did not follow their suggested timing to the word,
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* but this works nice & fast anyway.
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*/
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static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 reg)
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{
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int i;
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for (i = 0; i < 1000; i++) {
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u8 val = if_cs_read8(card, addr);
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if (val == reg)
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return i;
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udelay(500);
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}
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return -ETIME;
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}
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/* Host control registers and their bit definitions */
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#define IF_CS_H_STATUS 0x00000000
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#define IF_CS_H_STATUS_TX_OVER 0x0001
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#define IF_CS_H_STATUS_RX_OVER 0x0002
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#define IF_CS_H_STATUS_DNLD_OVER 0x0004
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#define IF_CS_H_INT_CAUSE 0x00000002
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#define IF_CS_H_IC_TX_OVER 0x0001
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#define IF_CS_H_IC_RX_OVER 0x0002
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#define IF_CS_H_IC_DNLD_OVER 0x0004
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#define IF_CS_H_IC_POWER_DOWN 0x0008
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#define IF_CS_H_IC_HOST_EVENT 0x0010
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#define IF_CS_H_IC_MASK 0x001f
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#define IF_CS_H_INT_MASK 0x00000004
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#define IF_CS_H_IM_MASK 0x001f
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#define IF_CS_H_WRITE_LEN 0x00000014
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#define IF_CS_H_WRITE 0x00000016
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#define IF_CS_H_CMD_LEN 0x00000018
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#define IF_CS_H_CMD 0x0000001A
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#define IF_CS_C_READ_LEN 0x00000024
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#define IF_CS_H_READ 0x00000010
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/* Card control registers and their bit definitions */
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#define IF_CS_C_STATUS 0x00000020
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#define IF_CS_C_S_TX_DNLD_RDY 0x0001
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#define IF_CS_C_S_RX_UPLD_RDY 0x0002
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#define IF_CS_C_S_CMD_DNLD_RDY 0x0004
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#define IF_CS_C_S_CMD_UPLD_RDY 0x0008
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#define IF_CS_C_S_CARDEVENT 0x0010
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#define IF_CS_C_S_MASK 0x001f
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#define IF_CS_C_S_STATUS_MASK 0x7f00
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/* The following definitions should be the same as the MRVDRV_ ones */
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#if MRVDRV_CMD_DNLD_RDY != IF_CS_C_S_CMD_DNLD_RDY
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#error MRVDRV_CMD_DNLD_RDY and IF_CS_C_S_CMD_DNLD_RDY not in sync
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#endif
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#if MRVDRV_CMD_UPLD_RDY != IF_CS_C_S_CMD_UPLD_RDY
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#error MRVDRV_CMD_UPLD_RDY and IF_CS_C_S_CMD_UPLD_RDY not in sync
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#endif
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#if MRVDRV_CARDEVENT != IF_CS_C_S_CARDEVENT
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#error MRVDRV_CARDEVENT and IF_CS_C_S_CARDEVENT not in sync
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#endif
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#define IF_CS_C_INT_CAUSE 0x00000022
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#define IF_CS_C_IC_MASK 0x001f
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#define IF_CS_C_SQ_READ_LOW 0x00000028
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#define IF_CS_C_SQ_HELPER_OK 0x10
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#define IF_CS_C_CMD_LEN 0x00000030
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#define IF_CS_C_CMD 0x00000012
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#define IF_CS_SCRATCH 0x0000003F
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/********************************************************************/
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/* Interrupts */
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/********************************************************************/
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static inline void if_cs_enable_ints(struct if_cs_card *card)
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{
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lbs_deb_enter(LBS_DEB_CS);
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if_cs_write16(card, IF_CS_H_INT_MASK, 0);
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}
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static inline void if_cs_disable_ints(struct if_cs_card *card)
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{
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lbs_deb_enter(LBS_DEB_CS);
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if_cs_write16(card, IF_CS_H_INT_MASK, IF_CS_H_IM_MASK);
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}
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static irqreturn_t if_cs_interrupt(int irq, void *data)
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{
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struct if_cs_card *card = data;
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u16 int_cause;
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lbs_deb_enter(LBS_DEB_CS);
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int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE);
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if(int_cause == 0x0) {
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/* Not for us */
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return IRQ_NONE;
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} else if (int_cause == 0xffff) {
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/* Read in junk, the card has probably been removed */
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card->priv->surpriseremoved = 1;
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} else {
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if (int_cause & IF_CS_H_IC_TX_OVER)
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lbs_host_to_card_done(card->priv);
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/* clear interrupt */
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if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause & IF_CS_C_IC_MASK);
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}
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lbs_interrupt(card->priv->dev);
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return IRQ_HANDLED;
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}
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/********************************************************************/
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/* I/O */
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/********************************************************************/
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/*
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* Called from if_cs_host_to_card to send a command to the hardware
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*/
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static int if_cs_send_cmd(struct lbs_private *priv, u8 *buf, u16 nb)
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{
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struct if_cs_card *card = (struct if_cs_card *)priv->card;
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int ret = -1;
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int loops = 0;
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lbs_deb_enter(LBS_DEB_CS);
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/* Is hardware ready? */
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while (1) {
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u16 val = if_cs_read16(card, IF_CS_C_STATUS);
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if (val & IF_CS_C_S_CMD_DNLD_RDY)
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break;
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if (++loops > 100) {
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lbs_pr_err("card not ready for commands\n");
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goto done;
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}
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mdelay(1);
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}
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if_cs_write16(card, IF_CS_H_CMD_LEN, nb);
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if_cs_write16_rep(card, IF_CS_H_CMD, buf, nb / 2);
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/* Are we supposed to transfer an odd amount of bytes? */
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if (nb & 1)
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if_cs_write8(card, IF_CS_H_CMD, buf[nb-1]);
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/* "Assert the download over interrupt command in the Host
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* status register" */
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if_cs_write16(card, IF_CS_H_STATUS, IF_CS_H_STATUS_DNLD_OVER);
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/* "Assert the download over interrupt command in the Card
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* interrupt case register" */
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if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_DNLD_OVER);
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ret = 0;
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done:
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lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
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return ret;
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}
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/*
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* Called from if_cs_host_to_card to send a data to the hardware
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*/
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static void if_cs_send_data(struct lbs_private *priv, u8 *buf, u16 nb)
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{
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struct if_cs_card *card = (struct if_cs_card *)priv->card;
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lbs_deb_enter(LBS_DEB_CS);
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if_cs_write16(card, IF_CS_H_WRITE_LEN, nb);
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/* write even number of bytes, then odd byte if necessary */
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if_cs_write16_rep(card, IF_CS_H_WRITE, buf, nb / 2);
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if (nb & 1)
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if_cs_write8(card, IF_CS_H_WRITE, buf[nb-1]);
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if_cs_write16(card, IF_CS_H_STATUS, IF_CS_H_STATUS_TX_OVER);
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if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_STATUS_TX_OVER);
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lbs_deb_leave(LBS_DEB_CS);
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}
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/*
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* Get the command result out of the card.
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*/
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static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len)
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{
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int ret = -1;
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u16 val;
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lbs_deb_enter(LBS_DEB_CS);
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/* is hardware ready? */
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val = if_cs_read16(priv->card, IF_CS_C_STATUS);
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if ((val & IF_CS_C_S_CMD_UPLD_RDY) == 0) {
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lbs_pr_err("card not ready for CMD\n");
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goto out;
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}
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*len = if_cs_read16(priv->card, IF_CS_C_CMD_LEN);
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if ((*len == 0) || (*len > MRVDRV_SIZE_OF_CMD_BUFFER)) {
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lbs_pr_err("card cmd buffer has invalid # of bytes (%d)\n", *len);
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goto out;
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}
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/* read even number of bytes, then odd byte if necessary */
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if_cs_read16_rep(priv->card, IF_CS_C_CMD, data, *len/sizeof(u16));
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if (*len & 1)
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data[*len-1] = if_cs_read8(priv->card, IF_CS_C_CMD);
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/* This is a workaround for a firmware that reports too much
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* bytes */
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*len -= 8;
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ret = 0;
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out:
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lbs_deb_leave_args(LBS_DEB_CS, "ret %d, len %d", ret, *len);
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return ret;
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}
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static struct sk_buff *if_cs_receive_data(struct lbs_private *priv)
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{
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struct sk_buff *skb = NULL;
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u16 len;
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u8 *data;
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lbs_deb_enter(LBS_DEB_CS);
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len = if_cs_read16(priv->card, IF_CS_C_READ_LEN);
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if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
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lbs_pr_err("card data buffer has invalid # of bytes (%d)\n", len);
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priv->stats.rx_dropped++;
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printk(KERN_INFO "##HS %s:%d TODO\n", __FUNCTION__, __LINE__);
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goto dat_err;
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}
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//TODO: skb = dev_alloc_skb(len+ETH_FRAME_LEN+MRVDRV_SNAP_HEADER_LEN+EXTRA_LEN);
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skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + 2);
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if (!skb)
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goto out;
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skb_put(skb, len);
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skb_reserve(skb, 2);/* 16 byte align */
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data = skb->data;
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/* read even number of bytes, then odd byte if necessary */
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if_cs_read16_rep(priv->card, IF_CS_H_READ, data, len/sizeof(u16));
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if (len & 1)
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data[len-1] = if_cs_read8(priv->card, IF_CS_H_READ);
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|
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dat_err:
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if_cs_write16(priv->card, IF_CS_H_STATUS, IF_CS_H_STATUS_RX_OVER);
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if_cs_write16(priv->card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_RX_OVER);
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out:
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lbs_deb_leave_args(LBS_DEB_CS, "ret %p", skb);
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return skb;
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}
|
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|
|
|
|
|
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/********************************************************************/
|
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/* Firmware */
|
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/********************************************************************/
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|
|
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/*
|
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* Tries to program the helper firmware.
|
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*
|
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* Return 0 on success
|
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*/
|
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static int if_cs_prog_helper(struct if_cs_card *card)
|
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{
|
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int ret = 0;
|
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int sent = 0;
|
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u8 scratch;
|
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const struct firmware *fw;
|
|
|
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lbs_deb_enter(LBS_DEB_CS);
|
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|
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scratch = if_cs_read8(card, IF_CS_SCRATCH);
|
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|
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/* "If the value is 0x5a, the firmware is already
|
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* downloaded successfully"
|
|
*/
|
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if (scratch == 0x5a)
|
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goto done;
|
|
|
|
/* "If the value is != 00, it is invalid value of register */
|
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if (scratch != 0x00) {
|
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ret = -ENODEV;
|
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goto done;
|
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}
|
|
|
|
/* TODO: make firmware file configurable */
|
|
ret = request_firmware(&fw, "libertas_cs_helper.fw",
|
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&handle_to_dev(card->p_dev));
|
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if (ret) {
|
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lbs_pr_err("can't load helper firmware\n");
|
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ret = -ENODEV;
|
|
goto done;
|
|
}
|
|
lbs_deb_cs("helper size %td\n", fw->size);
|
|
|
|
/* "Set the 5 bytes of the helper image to 0" */
|
|
/* Not needed, this contains an ARM branch instruction */
|
|
|
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for (;;) {
|
|
/* "the number of bytes to send is 256" */
|
|
int count = 256;
|
|
int remain = fw->size - sent;
|
|
|
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if (remain < count)
|
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count = remain;
|
|
/* printk(KERN_INFO "//HS %d loading %d of %d bytes\n",
|
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__LINE__, sent, fw->size); */
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|
|
|
/* "write the number of bytes to be sent to the I/O Command
|
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* write length register" */
|
|
if_cs_write16(card, IF_CS_H_CMD_LEN, count);
|
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|
|
/* "write this to I/O Command port register as 16 bit writes */
|
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if (count)
|
|
if_cs_write16_rep(card, IF_CS_H_CMD,
|
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&fw->data[sent],
|
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count >> 1);
|
|
|
|
/* "Assert the download over interrupt command in the Host
|
|
* status register" */
|
|
if_cs_write8(card, IF_CS_H_STATUS, IF_CS_H_STATUS_DNLD_OVER);
|
|
|
|
/* "Assert the download over interrupt command in the Card
|
|
* interrupt case register" */
|
|
if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_DNLD_OVER);
|
|
|
|
/* "The host polls the Card Status register ... for 50 ms before
|
|
declaring a failure */
|
|
ret = if_cs_poll_while_fw_download(card, IF_CS_C_STATUS,
|
|
IF_CS_C_S_CMD_DNLD_RDY);
|
|
if (ret < 0) {
|
|
lbs_pr_err("can't download helper at 0x%x, ret %d\n",
|
|
sent, ret);
|
|
goto done;
|
|
}
|
|
|
|
if (count == 0)
|
|
break;
|
|
|
|
sent += count;
|
|
}
|
|
|
|
release_firmware(fw);
|
|
ret = 0;
|
|
|
|
done:
|
|
lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int if_cs_prog_real(struct if_cs_card *card)
|
|
{
|
|
const struct firmware *fw;
|
|
int ret = 0;
|
|
int retry = 0;
|
|
int len = 0;
|
|
int sent;
|
|
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
|
|
/* TODO: make firmware file configurable */
|
|
ret = request_firmware(&fw, "libertas_cs.fw",
|
|
&handle_to_dev(card->p_dev));
|
|
if (ret) {
|
|
lbs_pr_err("can't load firmware\n");
|
|
ret = -ENODEV;
|
|
goto done;
|
|
}
|
|
lbs_deb_cs("fw size %td\n", fw->size);
|
|
|
|
ret = if_cs_poll_while_fw_download(card, IF_CS_C_SQ_READ_LOW, IF_CS_C_SQ_HELPER_OK);
|
|
if (ret < 0) {
|
|
int i;
|
|
lbs_pr_err("helper firmware doesn't answer\n");
|
|
for (i = 0; i < 0x50; i += 2)
|
|
printk(KERN_INFO "## HS %02x: %04x\n",
|
|
i, if_cs_read16(card, i));
|
|
goto err_release;
|
|
}
|
|
|
|
for (sent = 0; sent < fw->size; sent += len) {
|
|
len = if_cs_read16(card, IF_CS_C_SQ_READ_LOW);
|
|
/* printk(KERN_INFO "//HS %d loading %d of %d bytes\n",
|
|
__LINE__, sent, fw->size); */
|
|
if (len & 1) {
|
|
retry++;
|
|
lbs_pr_info("odd, need to retry this firmware block\n");
|
|
} else {
|
|
retry = 0;
|
|
}
|
|
|
|
if (retry > 20) {
|
|
lbs_pr_err("could not download firmware\n");
|
|
ret = -ENODEV;
|
|
goto err_release;
|
|
}
|
|
if (retry) {
|
|
sent -= len;
|
|
}
|
|
|
|
|
|
if_cs_write16(card, IF_CS_H_CMD_LEN, len);
|
|
|
|
if_cs_write16_rep(card, IF_CS_H_CMD,
|
|
&fw->data[sent],
|
|
(len+1) >> 1);
|
|
if_cs_write8(card, IF_CS_H_STATUS, IF_CS_H_STATUS_DNLD_OVER);
|
|
if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_DNLD_OVER);
|
|
|
|
ret = if_cs_poll_while_fw_download(card, IF_CS_C_STATUS,
|
|
IF_CS_C_S_CMD_DNLD_RDY);
|
|
if (ret < 0) {
|
|
lbs_pr_err("can't download firmware at 0x%x\n", sent);
|
|
goto err_release;
|
|
}
|
|
}
|
|
|
|
ret = if_cs_poll_while_fw_download(card, IF_CS_SCRATCH, 0x5a);
|
|
if (ret < 0) {
|
|
lbs_pr_err("firmware download failed\n");
|
|
goto err_release;
|
|
}
|
|
|
|
ret = 0;
|
|
goto done;
|
|
|
|
|
|
err_release:
|
|
release_firmware(fw);
|
|
|
|
done:
|
|
lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
/********************************************************************/
|
|
/* Callback functions for libertas.ko */
|
|
/********************************************************************/
|
|
|
|
/* Send commands or data packets to the card */
|
|
static int if_cs_host_to_card(struct lbs_private *priv,
|
|
u8 type,
|
|
u8 *buf,
|
|
u16 nb)
|
|
{
|
|
int ret = -1;
|
|
|
|
lbs_deb_enter_args(LBS_DEB_CS, "type %d, bytes %d", type, nb);
|
|
|
|
switch (type) {
|
|
case MVMS_DAT:
|
|
priv->dnld_sent = DNLD_DATA_SENT;
|
|
if_cs_send_data(priv, buf, nb);
|
|
ret = 0;
|
|
break;
|
|
case MVMS_CMD:
|
|
priv->dnld_sent = DNLD_CMD_SENT;
|
|
ret = if_cs_send_cmd(priv, buf, nb);
|
|
break;
|
|
default:
|
|
lbs_pr_err("%s: unsupported type %d\n", __FUNCTION__, type);
|
|
}
|
|
|
|
lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int if_cs_get_int_status(struct lbs_private *priv, u8 *ireg)
|
|
{
|
|
struct if_cs_card *card = (struct if_cs_card *)priv->card;
|
|
int ret = 0;
|
|
u16 int_cause;
|
|
u8 *cmdbuf;
|
|
*ireg = 0;
|
|
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
|
|
if (priv->surpriseremoved)
|
|
goto out;
|
|
|
|
int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE) & IF_CS_C_IC_MASK;
|
|
if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause);
|
|
|
|
*ireg = if_cs_read16(card, IF_CS_C_STATUS) & IF_CS_C_S_MASK;
|
|
|
|
if (!*ireg)
|
|
goto sbi_get_int_status_exit;
|
|
|
|
sbi_get_int_status_exit:
|
|
|
|
/* is there a data packet for us? */
|
|
if (*ireg & IF_CS_C_S_RX_UPLD_RDY) {
|
|
struct sk_buff *skb = if_cs_receive_data(priv);
|
|
lbs_process_rxed_packet(priv, skb);
|
|
*ireg &= ~IF_CS_C_S_RX_UPLD_RDY;
|
|
}
|
|
|
|
if (*ireg & IF_CS_C_S_TX_DNLD_RDY) {
|
|
priv->dnld_sent = DNLD_RES_RECEIVED;
|
|
}
|
|
|
|
/* Card has a command result for us */
|
|
if (*ireg & IF_CS_C_S_CMD_UPLD_RDY) {
|
|
spin_lock(&priv->driver_lock);
|
|
if (!priv->cur_cmd) {
|
|
cmdbuf = priv->upld_buf;
|
|
priv->hisregcpy &= ~IF_CS_C_S_RX_UPLD_RDY;
|
|
} else {
|
|
cmdbuf = priv->cur_cmd->bufvirtualaddr;
|
|
}
|
|
|
|
ret = if_cs_receive_cmdres(priv, cmdbuf, &priv->upld_len);
|
|
spin_unlock(&priv->driver_lock);
|
|
if (ret < 0)
|
|
lbs_pr_err("could not receive cmd from card\n");
|
|
}
|
|
|
|
out:
|
|
lbs_deb_leave_args(LBS_DEB_CS, "ret %d, ireg 0x%x, hisregcpy 0x%x", ret, *ireg, priv->hisregcpy);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int if_cs_read_event_cause(struct lbs_private *priv)
|
|
{
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
|
|
priv->eventcause = (if_cs_read16(priv->card, IF_CS_C_STATUS) & IF_CS_C_S_STATUS_MASK) >> 5;
|
|
if_cs_write16(priv->card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_HOST_EVENT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
|
|
/********************************************************************/
|
|
/* Card Services */
|
|
/********************************************************************/
|
|
|
|
/*
|
|
* After a card is removed, if_cs_release() will unregister the
|
|
* device, and release the PCMCIA configuration. If the device is
|
|
* still open, this will be postponed until it is closed.
|
|
*/
|
|
static void if_cs_release(struct pcmcia_device *p_dev)
|
|
{
|
|
struct if_cs_card *card = p_dev->priv;
|
|
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
|
|
pcmcia_disable_device(p_dev);
|
|
free_irq(p_dev->irq.AssignedIRQ, card);
|
|
if (card->iobase)
|
|
ioport_unmap(card->iobase);
|
|
|
|
lbs_deb_leave(LBS_DEB_CS);
|
|
}
|
|
|
|
|
|
/*
|
|
* This creates an "instance" of the driver, allocating local data
|
|
* structures for one device. The device is registered with Card
|
|
* Services.
|
|
*
|
|
* The dev_link structure is initialized, but we don't actually
|
|
* configure the card at this point -- we wait until we receive a card
|
|
* insertion event.
|
|
*/
|
|
static int if_cs_probe(struct pcmcia_device *p_dev)
|
|
{
|
|
int ret = -ENOMEM;
|
|
struct lbs_private *priv;
|
|
struct if_cs_card *card;
|
|
/* CIS parsing */
|
|
tuple_t tuple;
|
|
cisparse_t parse;
|
|
cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
|
|
cistpl_io_t *io = &cfg->io;
|
|
u_char buf[64];
|
|
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
|
|
card = kzalloc(sizeof(struct if_cs_card), GFP_KERNEL);
|
|
if (!card) {
|
|
lbs_pr_err("error in kzalloc\n");
|
|
goto out;
|
|
}
|
|
card->p_dev = p_dev;
|
|
p_dev->priv = card;
|
|
|
|
p_dev->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING;
|
|
p_dev->irq.Handler = NULL;
|
|
p_dev->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
|
|
|
|
p_dev->conf.Attributes = 0;
|
|
p_dev->conf.IntType = INT_MEMORY_AND_IO;
|
|
|
|
tuple.Attributes = 0;
|
|
tuple.TupleData = buf;
|
|
tuple.TupleDataMax = sizeof(buf);
|
|
tuple.TupleOffset = 0;
|
|
|
|
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
|
|
if ((ret = pcmcia_get_first_tuple(p_dev, &tuple)) != 0 ||
|
|
(ret = pcmcia_get_tuple_data(p_dev, &tuple)) != 0 ||
|
|
(ret = pcmcia_parse_tuple(p_dev, &tuple, &parse)) != 0)
|
|
{
|
|
lbs_pr_err("error in pcmcia_get_first_tuple etc\n");
|
|
goto out1;
|
|
}
|
|
|
|
p_dev->conf.ConfigIndex = cfg->index;
|
|
|
|
/* Do we need to allocate an interrupt? */
|
|
if (cfg->irq.IRQInfo1) {
|
|
p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
|
|
}
|
|
|
|
/* IO window settings */
|
|
if (cfg->io.nwin != 1) {
|
|
lbs_pr_err("wrong CIS (check number of IO windows)\n");
|
|
ret = -ENODEV;
|
|
goto out1;
|
|
}
|
|
p_dev->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
|
|
p_dev->io.BasePort1 = io->win[0].base;
|
|
p_dev->io.NumPorts1 = io->win[0].len;
|
|
|
|
/* This reserves IO space but doesn't actually enable it */
|
|
ret = pcmcia_request_io(p_dev, &p_dev->io);
|
|
if (ret) {
|
|
lbs_pr_err("error in pcmcia_request_io\n");
|
|
goto out1;
|
|
}
|
|
|
|
/*
|
|
* Allocate an interrupt line. Note that this does not assign
|
|
* a handler to the interrupt, unless the 'Handler' member of
|
|
* the irq structure is initialized.
|
|
*/
|
|
if (p_dev->conf.Attributes & CONF_ENABLE_IRQ) {
|
|
ret = pcmcia_request_irq(p_dev, &p_dev->irq);
|
|
if (ret) {
|
|
lbs_pr_err("error in pcmcia_request_irq\n");
|
|
goto out1;
|
|
}
|
|
}
|
|
|
|
/* Initialize io access */
|
|
card->iobase = ioport_map(p_dev->io.BasePort1, p_dev->io.NumPorts1);
|
|
if (!card->iobase) {
|
|
lbs_pr_err("error in ioport_map\n");
|
|
ret = -EIO;
|
|
goto out1;
|
|
}
|
|
|
|
/*
|
|
* This actually configures the PCMCIA socket -- setting up
|
|
* the I/O windows and the interrupt mapping, and putting the
|
|
* card and host interface into "Memory and IO" mode.
|
|
*/
|
|
ret = pcmcia_request_configuration(p_dev, &p_dev->conf);
|
|
if (ret) {
|
|
lbs_pr_err("error in pcmcia_request_configuration\n");
|
|
goto out2;
|
|
}
|
|
|
|
/* Finally, report what we've done */
|
|
lbs_deb_cs("irq %d, io 0x%04x-0x%04x\n",
|
|
p_dev->irq.AssignedIRQ, p_dev->io.BasePort1,
|
|
p_dev->io.BasePort1 + p_dev->io.NumPorts1 - 1);
|
|
|
|
|
|
/* Load the firmware early, before calling into libertas.ko */
|
|
ret = if_cs_prog_helper(card);
|
|
if (ret == 0)
|
|
ret = if_cs_prog_real(card);
|
|
if (ret)
|
|
goto out2;
|
|
|
|
/* Make this card known to the libertas driver */
|
|
priv = lbs_add_card(card, &p_dev->dev);
|
|
if (!priv) {
|
|
ret = -ENOMEM;
|
|
goto out2;
|
|
}
|
|
|
|
/* Store pointers to our call-back functions */
|
|
card->priv = priv;
|
|
priv->card = card;
|
|
priv->hw_host_to_card = if_cs_host_to_card;
|
|
priv->hw_get_int_status = if_cs_get_int_status;
|
|
priv->hw_read_event_cause = if_cs_read_event_cause;
|
|
|
|
priv->fw_ready = 1;
|
|
|
|
/* Now actually get the IRQ */
|
|
ret = request_irq(p_dev->irq.AssignedIRQ, if_cs_interrupt,
|
|
IRQF_SHARED, DRV_NAME, card);
|
|
if (ret) {
|
|
lbs_pr_err("error in request_irq\n");
|
|
goto out3;
|
|
}
|
|
|
|
/* Clear any interrupt cause that happend while sending
|
|
* firmware/initializing card */
|
|
if_cs_write16(card, IF_CS_C_INT_CAUSE, IF_CS_C_IC_MASK);
|
|
if_cs_enable_ints(card);
|
|
|
|
/* And finally bring the card up */
|
|
if (lbs_start_card(priv) != 0) {
|
|
lbs_pr_err("could not activate card\n");
|
|
goto out3;
|
|
}
|
|
|
|
ret = 0;
|
|
goto out;
|
|
|
|
out3:
|
|
lbs_remove_card(priv);
|
|
out2:
|
|
ioport_unmap(card->iobase);
|
|
out1:
|
|
pcmcia_disable_device(p_dev);
|
|
out:
|
|
lbs_deb_leave_args(LBS_DEB_CS, "ret %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
|
|
/*
|
|
* This deletes a driver "instance". The device is de-registered with
|
|
* Card Services. If it has been released, all local data structures
|
|
* are freed. Otherwise, the structures will be freed when the device
|
|
* is released.
|
|
*/
|
|
static void if_cs_detach(struct pcmcia_device *p_dev)
|
|
{
|
|
struct if_cs_card *card = p_dev->priv;
|
|
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
|
|
lbs_stop_card(card->priv);
|
|
lbs_remove_card(card->priv);
|
|
if_cs_disable_ints(card);
|
|
if_cs_release(p_dev);
|
|
kfree(card);
|
|
|
|
lbs_deb_leave(LBS_DEB_CS);
|
|
}
|
|
|
|
|
|
|
|
/********************************************************************/
|
|
/* Module initialization */
|
|
/********************************************************************/
|
|
|
|
static struct pcmcia_device_id if_cs_ids[] = {
|
|
PCMCIA_DEVICE_MANF_CARD(0x02df, 0x8103),
|
|
PCMCIA_DEVICE_NULL,
|
|
};
|
|
MODULE_DEVICE_TABLE(pcmcia, if_cs_ids);
|
|
|
|
|
|
static struct pcmcia_driver lbs_driver = {
|
|
.owner = THIS_MODULE,
|
|
.drv = {
|
|
.name = DRV_NAME,
|
|
},
|
|
.probe = if_cs_probe,
|
|
.remove = if_cs_detach,
|
|
.id_table = if_cs_ids,
|
|
};
|
|
|
|
|
|
static int __init if_cs_init(void)
|
|
{
|
|
int ret;
|
|
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
ret = pcmcia_register_driver(&lbs_driver);
|
|
lbs_deb_leave(LBS_DEB_CS);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void __exit if_cs_exit(void)
|
|
{
|
|
lbs_deb_enter(LBS_DEB_CS);
|
|
pcmcia_unregister_driver(&lbs_driver);
|
|
lbs_deb_leave(LBS_DEB_CS);
|
|
}
|
|
|
|
|
|
module_init(if_cs_init);
|
|
module_exit(if_cs_exit);
|