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NetBSD/sys/dev/pcmcia/bt3c.c

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/* $NetBSD: bt3c.c,v 1.16 2007/11/28 20:16:11 plunky Exp $ */
/*-
* Copyright (c) 2005 Iain D. Hibbert,
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Driver for the 3Com Bluetooth PC Card 3CRWB6096, written with reference to
* FreeBSD and BlueZ drivers for same, with credit for those going to:
*
* Maksim Yevmenkin <m_evmenkin@yahoo.com> (FreeBSD)
* Marcel Holtmann <marcel@holtmann.org> (BlueZ)
* Jose Orlando Pereira <jop@di.uminho.pt> (BlueZ)
* David Hinds <dahinds@users.sourceforge.net> (Original Code)
*/
/*
* The CIS info from my card:
*
* pcmcia1: CIS tuple chain:
* CISTPL_DEVICE type=null speed=null
* 01 03 00 00 ff
* CISTPL_VERS_1
* 15 24 05 00 33 43 4f 4d 00 33 43 52 57 42 36 30
* 2d 41 00 42 6c 75 65 74 6f 6f 74 68 20 50 43 20
* 43 61 72 64 00 ff
* CISTPL_MANFID
* 20 04 01 01 40 00
* CISTPL_FUNCID
* 21 02 02 01
* CISTPL_CONFIG
* 1a 06 05 30 20 03 17 00
* CISTPL_CFTABLE_ENTRY
* 1b 09 f0 41 18 a0 40 07 30 ff ff
* unhandled CISTPL 80
* 80 0a 02 01 40 00 2d 00 00 00 00 ff
* CISTPL_NO_LINK
* 14 00
* CISTPL_END
* ff
* pcmcia1: CIS version PC Card Standard 5.0
* pcmcia1: CIS info: 3COM, 3CRWB60-A, Bluetooth PC Card
* pcmcia1: Manufacturer code 0x101, product 0x40
* pcmcia1: function 0: serial port, ccr addr 320 mask 17
* pcmcia1: function 0, config table entry 48: I/O card; irq mask ffff; iomask 0, iospace 0-7; rdybsy_active io8 irqlevel
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bt3c.c,v 1.16 2007/11/28 20:16:11 plunky Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/mbuf.h>
#include <sys/systm.h>
#include <sys/cpu.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/pcmcia/pcmciareg.h>
#include <dev/pcmcia/pcmciavar.h>
#include <dev/pcmcia/pcmciadevs.h>
#include <netbt/bluetooth.h>
#include <netbt/hci.h>
#include <dev/firmload.h>
#define BT3C_FIRMWARE_FILE "BT3CPCC.bin"
/**************************************************************************
*
* bt3c autoconfig glue
*/
struct bt3c_softc {
device_t sc_dev;
struct pcmcia_function *sc_pf; /* our PCMCIA function */
struct pcmcia_io_handle sc_pcioh; /* PCMCIA i/o space info */
int sc_iow; /* our i/o window */
void *sc_powerhook; /* power hook descriptor */
int sc_flags; /* flags */
struct hci_unit *sc_unit; /* Bluetooth HCI Unit */
struct bt_stats sc_stats; /* HCI stats */
/* hardware interrupt */
void *sc_intr; /* cookie */
int sc_state; /* receive state */
int sc_want; /* how much we want */
struct mbuf *sc_rxp; /* incoming packet */
struct mbuf *sc_txp; /* outgoing packet */
/* transmit queues */
MBUFQ_HEAD() sc_cmdq; /* commands */
MBUFQ_HEAD() sc_aclq; /* ACL data */
MBUFQ_HEAD() sc_scoq; /* SCO data */
};
/* sc_state */ /* receiving */
#define BT3C_RECV_PKT_TYPE 0 /* packet type */
#define BT3C_RECV_ACL_HDR 1 /* acl header */
#define BT3C_RECV_SCO_HDR 2 /* sco header */
#define BT3C_RECV_EVENT_HDR 3 /* event header */
#define BT3C_RECV_ACL_DATA 4 /* acl packet data */
#define BT3C_RECV_SCO_DATA 5 /* sco packet data */
#define BT3C_RECV_EVENT_DATA 6 /* event packet data */
/* sc_flags */
#define BT3C_SLEEPING (1 << 0) /* but not with the fishes */
#define BT3C_XMIT (1 << 1) /* transmit active */
#define BT3C_ENABLED (1 << 2) /* enabled */
static int bt3c_match(device_t, struct cfdata *, void *);
static void bt3c_attach(device_t, device_t, void *);
static int bt3c_detach(device_t, int);
static void bt3c_power(int, void *);
CFATTACH_DECL_NEW(bt3c, sizeof(struct bt3c_softc),
bt3c_match, bt3c_attach, bt3c_detach, NULL);
static int bt3c_enable(device_t);
static void bt3c_disable(device_t);
static void bt3c_output_cmd(device_t, struct mbuf *);
static void bt3c_output_acl(device_t, struct mbuf *);
static void bt3c_output_sco(device_t, struct mbuf *);
static void bt3c_stats(device_t, struct bt_stats *, int);
static const struct hci_if bt3c_hci = {
.enable = bt3c_enable,
.disable = bt3c_disable,
.output_cmd = bt3c_output_cmd,
.output_acl = bt3c_output_acl,
.output_sco = bt3c_output_sco,
.get_stats = bt3c_stats,
.ipl = IPL_TTY,
};
static void bt3c_start(struct bt3c_softc *);
/**************************************************************************
*
* Hardware Definitions & IO routines
*
* I made up the names for most of these defs since we dont have
* manufacturers recommendations, but I dont like raw numbers..
*
* all hardware routines are running at IPL_TTY
*
*/
#define BT3C_ISR 0x7001 /* Interrupt Status Register */
#define BT3C_ISR_RXRDY (1<<0) /* Device has data */
#define BT3C_ISR_TXRDY (1<<1) /* Finished sending data */
#define BT3C_ISR_ANTENNA (1<<5) /* Antenna position changed */
#define BT3C_CSR 0x7002 /* Card Status Register */
#define BT3C_CSR_ANTENNA (1<<4) /* Antenna position */
#define BT3C_TX_COUNT 0x7005 /* Tx fifo contents */
#define BT3C_TX_FIFO 0x7080 /* Transmit Fifo */
#define BT3C_RX_COUNT 0x7006 /* Rx fifo contents */
#define BT3C_RX_FIFO 0x7480 /* Receive Fifo */
#define BT3C_FIFO_SIZE 256
/* IO Registers */
#define BT3C_IOR_DATA_L 0x00 /* data low byte */
#define BT3C_IOR_DATA_H 0x01 /* data high byte */
#define BT3C_IOR_ADDR_L 0x02 /* address low byte */
#define BT3C_IOR_ADDR_H 0x03 /* address high byte */
#define BT3C_IOR_CNTL 0x04 /* control byte */
#define BT3C_IOR_CNTL_BOOT (1<<6) /* Boot Card */
#define BT3C_IOR_CNTL_INTR (1<<7) /* Interrupt Requested */
#define BT3C_IOR_LEN 0x05
static inline uint16_t
bt3c_get(struct bt3c_softc *sc)
{
uint16_t data;
bus_space_barrier(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
0, BT3C_IOR_LEN, BUS_SPACE_BARRIER_READ);
data = bus_space_read_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_DATA_L);
data |= bus_space_read_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_DATA_H) << 8;
return data;
}
static inline void
bt3c_put(struct bt3c_softc *sc, uint16_t data)
{
bus_space_barrier(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
0, BT3C_IOR_LEN, BUS_SPACE_BARRIER_WRITE);
bus_space_write_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_DATA_L, data & 0xff);
bus_space_write_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_DATA_H, (data >> 8) & 0xff);
}
static inline uint8_t
bt3c_read_control(struct bt3c_softc *sc)
{
bus_space_barrier(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
0, BT3C_IOR_LEN, BUS_SPACE_BARRIER_READ);
return bus_space_read_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_CNTL);
}
static inline void
bt3c_write_control(struct bt3c_softc *sc, uint8_t data)
{
bus_space_barrier(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
0, BT3C_IOR_LEN, BUS_SPACE_BARRIER_WRITE);
bus_space_write_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_CNTL, data);
}
static inline void
bt3c_set_address(struct bt3c_softc *sc, uint16_t addr)
{
bus_space_barrier(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
0, BT3C_IOR_LEN, BUS_SPACE_BARRIER_WRITE);
bus_space_write_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_ADDR_L, addr & 0xff);
bus_space_write_1(sc->sc_pcioh.iot, sc->sc_pcioh.ioh,
BT3C_IOR_ADDR_H, (addr >> 8) & 0xff);
}
static inline uint16_t
bt3c_read(struct bt3c_softc *sc, uint16_t addr)
{
bt3c_set_address(sc, addr);
return bt3c_get(sc);
}
static inline void
bt3c_write(struct bt3c_softc *sc, uint16_t addr, uint16_t data)
{
bt3c_set_address(sc, addr);
bt3c_put(sc, data);
}
/*
* receive incoming data from device, store in mbuf chain and
* pass on complete packets to bt device
*/
static void
bt3c_receive(struct bt3c_softc *sc)
{
struct mbuf *m = sc->sc_rxp;
int space = 0;
uint16_t count;
uint8_t b;
/*
* If we already started a packet, find the
* trailing end of it.
*/
if (m) {
while (m->m_next)
m = m->m_next;
space = M_TRAILINGSPACE(m);
}
count = bt3c_read(sc, BT3C_RX_COUNT);
bt3c_set_address(sc, BT3C_RX_FIFO);
while (count > 0) {
if (space == 0) {
if (m == NULL) {
/* new packet */
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL) {
aprint_error_dev(sc->sc_dev,
"out of memory\n");
sc->sc_stats.err_rx++;
goto out; /* (lost sync) */
}
sc->sc_rxp = m;
m->m_pkthdr.len = m->m_len = 0;
space = MHLEN;
sc->sc_state = BT3C_RECV_PKT_TYPE;
sc->sc_want = 1;
} else {
/* extend mbuf */
MGET(m->m_next, M_DONTWAIT, MT_DATA);
if (m->m_next == NULL) {
aprint_error_dev(sc->sc_dev,
"out of memory\n");
sc->sc_stats.err_rx++;
goto out; /* (lost sync) */
}
m = m->m_next;
m->m_len = 0;
space = MLEN;
if (sc->sc_want > MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
space = MCLBYTES;
}
}
}
b = bt3c_get(sc);
mtod(m, uint8_t *)[m->m_len++] = b;
count--;
space--;
sc->sc_rxp->m_pkthdr.len++;
sc->sc_stats.byte_rx++;
sc->sc_want--;
if (sc->sc_want > 0)
continue; /* want more */
switch (sc->sc_state) {
case BT3C_RECV_PKT_TYPE: /* Got packet type */
switch (b) {
case HCI_ACL_DATA_PKT:
sc->sc_state = BT3C_RECV_ACL_HDR;
sc->sc_want = sizeof(hci_acldata_hdr_t) - 1;
break;
case HCI_SCO_DATA_PKT:
sc->sc_state = BT3C_RECV_SCO_HDR;
sc->sc_want = sizeof(hci_scodata_hdr_t) - 1;
break;
case HCI_EVENT_PKT:
sc->sc_state = BT3C_RECV_EVENT_HDR;
sc->sc_want = sizeof(hci_event_hdr_t) - 1;
break;
default:
aprint_error_dev(sc->sc_dev,
"Unknown packet type=%#x!\n", b);
sc->sc_stats.err_rx++;
m_freem(sc->sc_rxp);
sc->sc_rxp = NULL;
goto out; /* (lost sync) */
}
break;
/*
* we assume (correctly of course :) that the packet headers
* all fit into a single pkthdr mbuf
*/
case BT3C_RECV_ACL_HDR: /* Got ACL Header */
sc->sc_state = BT3C_RECV_ACL_DATA;
sc->sc_want = mtod(m, hci_acldata_hdr_t *)->length;
sc->sc_want = le16toh(sc->sc_want);
break;
case BT3C_RECV_SCO_HDR: /* Got SCO Header */
sc->sc_state = BT3C_RECV_SCO_DATA;
sc->sc_want = mtod(m, hci_scodata_hdr_t *)->length;
break;
case BT3C_RECV_EVENT_HDR: /* Got Event Header */
sc->sc_state = BT3C_RECV_EVENT_DATA;
sc->sc_want = mtod(m, hci_event_hdr_t *)->length;
break;
case BT3C_RECV_ACL_DATA: /* ACL Packet Complete */
if (!hci_input_acl(sc->sc_unit, sc->sc_rxp))
sc->sc_stats.err_rx++;
sc->sc_stats.acl_rx++;
sc->sc_rxp = m = NULL;
space = 0;
break;
case BT3C_RECV_SCO_DATA: /* SCO Packet Complete */
if (!hci_input_sco(sc->sc_unit, sc->sc_rxp))
sc->sc_stats.err_rx++;
sc->sc_stats.sco_rx++;
sc->sc_rxp = m = NULL;
space = 0;
break;
case BT3C_RECV_EVENT_DATA: /* Event Packet Complete */
if (!hci_input_event(sc->sc_unit, sc->sc_rxp))
sc->sc_stats.err_rx++;
sc->sc_stats.evt_rx++;
sc->sc_rxp = m = NULL;
space = 0;
break;
default:
panic("%s: invalid state %d!\n",
device_xname(sc->sc_dev), sc->sc_state);
}
}
out:
bt3c_write(sc, BT3C_RX_COUNT, 0x0000);
}
/*
* write data from current packet to Transmit FIFO.
* restart when done.
*/
static void
bt3c_transmit(struct bt3c_softc *sc)
{
struct mbuf *m;
int count, rlen;
uint8_t *rptr;
m = sc->sc_txp;
if (m == NULL) {
sc->sc_flags &= ~BT3C_XMIT;
bt3c_start(sc);
return;
}
count = 0;
rlen = 0;
rptr = mtod(m, uint8_t *);
bt3c_set_address(sc, BT3C_TX_FIFO);
for(;;) {
if (rlen >= m->m_len) {
m = m->m_next;
if (m == NULL) {
m = sc->sc_txp;
sc->sc_txp = NULL;
if (M_GETCTX(m, void *) == NULL)
m_freem(m);
else if (!hci_complete_sco(sc->sc_unit, m))
sc->sc_stats.err_tx++;
break;
}
rlen = 0;
rptr = mtod(m, uint8_t *);
continue;
}
if (count >= BT3C_FIFO_SIZE) {
m_adj(m, rlen);
break;
}
bt3c_put(sc, *rptr++);
rlen++;
count++;
}
bt3c_write(sc, BT3C_TX_COUNT, count);
sc->sc_stats.byte_tx += count;
}
/*
* interrupt routine
*/
static int
bt3c_intr(void *arg)
{
struct bt3c_softc *sc = arg;
uint16_t control, isr;
control = bt3c_read_control(sc);
if (control & BT3C_IOR_CNTL_INTR) {
isr = bt3c_read(sc, BT3C_ISR);
if ((isr & 0xff) == 0x7f) {
aprint_error_dev(sc->sc_dev, "strange ISR=%04x\n", isr);
} else if ((isr & 0xff) != 0xff) {
if (isr & BT3C_ISR_RXRDY)
bt3c_receive(sc);
if (isr & BT3C_ISR_TXRDY)
bt3c_transmit(sc);
#ifdef DIAGNOSTIC
if (isr & BT3C_ISR_ANTENNA) {
if (bt3c_read(sc, BT3C_CSR) & BT3C_CSR_ANTENNA)
aprint_verbose_dev(sc->sc_dev,
"Antenna Out\n");
else
aprint_verbose_dev(sc->sc_dev,
"Antenna In\n");
}
#endif
bt3c_write(sc, BT3C_ISR, 0x0000);
bt3c_write_control(sc, control);
return 1; /* handled */
}
}
return 0; /* not handled */
}
/*
* load firmware for the device
*
* The firmware file is a plain ASCII file in the Motorola S-Record format,
* with lines in the format:
*
* S<Digit><Len><Address><Data1><Data2>...<DataN><Checksum>
*
* <Digit>: 0 header
* 3 data record (4 byte address)
* 7 boot record (4 byte address)
*
* <Len>: 1 byte, and is the number of bytes in the rest of the line
* <Address>: 4 byte address (only 2 bytes are valid for bt3c I think)
* <Data>: 2 byte data word to be written to the address
* <Checksum>: checksum of all bytes in the line including <Len>
*
* all bytes are in hexadecimal
*/
static inline int32_t
hex(const uint8_t *p, int n)
{
uint32_t val = 0;
while (n > 0) {
val <<= 4;
if ('0' <= *p && *p <= '9')
val += (*p - '0');
else if ('a' <= *p && *p <= 'f')
val += (*p - 'a' + 0xa);
else if ('A' <= *p && *p <= 'F')
val += (*p - 'A' + 0xa);
else
return -1;
p++;
n--;
}
return val;
}
static int
bt3c_load_firmware(struct bt3c_softc *sc)
{
uint8_t *buf, *line, *next, *p;
int32_t addr, data;
int err, sum, len;
firmware_handle_t fh;
struct cfdata *cf = device_cfdata(sc->sc_dev);
size_t size;
err = firmware_open(cf->cf_name,
BT3C_FIRMWARE_FILE, &fh);
if (err) {
aprint_error_dev(sc->sc_dev, "Cannot open firmware %s/%s\n",
cf->cf_name, BT3C_FIRMWARE_FILE);
return err;
}
size = (size_t)firmware_get_size(fh);
#ifdef DIAGNOSTIC
if (size > 10 * 1024) { /* sanity check */
aprint_error_dev(sc->sc_dev, "insane firmware file size!\n");
firmware_close(fh);
return EFBIG;
}
#endif
buf = firmware_malloc(size);
KASSERT(buf != NULL);
err = firmware_read(fh, 0, buf, size);
if (err) {
aprint_error_dev(sc->sc_dev, "Firmware read failed (%d)\n", err);
goto out;
}
/* Reset */
bt3c_write(sc, 0x8040, 0x0404);
bt3c_write(sc, 0x8040, 0x0400);
DELAY(1);
bt3c_write(sc, 0x8040, 0x0404);
DELAY(17);
next = buf;
err = EFTYPE;
while (next < buf + size) {
line = next;
while (*next != '\r' && *next != '\n') {
if (next >= buf + size)
goto out;
next++;
}
/* 14 covers address and checksum minimum */
if (next - line < 14)
goto out;
if (line[0] != 'S')
goto out;
/* verify line length */
len = hex(line + 2, 2);
if (len < 0 || next - line != len * 2 + 4)
goto out;
/* checksum the line */
sum = 0;
for (p = line + 2 ; p < next ; p += 2)
sum += hex(p, 2);
if ((sum & 0xff) != 0xff)
goto out;
/* extract relevant data */
switch (line[1]) {
case '0':
/* we ignore the header */
break;
case '3':
/* find number of data words */
len = (len - 5) / 2;
if (len > 15)
goto out;
addr = hex(line + 8, 4);
if (addr < 0)
goto out;
bt3c_set_address(sc, addr);
for (p = line + 12 ; p + 4 < next ; p += 4) {
data = hex(p, 4);
if (data < 0)
goto out;
bt3c_put(sc, data);
}
break;
case '7':
/*
* for some reason we ignore this record
* and boot from 0x3000 which happens to
* be the first record in the file.
*/
break;
default:
goto out;
}
/* skip to start of next line */
while (next < buf + size && (*next == '\r' || *next == '\n'))
next++;
}
err = 0;
DELAY(17);
/* Boot */
bt3c_set_address(sc, 0x3000);
bt3c_write_control(sc, (bt3c_read_control(sc) | BT3C_IOR_CNTL_BOOT));
DELAY(17);
/* Clear Registers */
bt3c_write(sc, BT3C_RX_COUNT, 0x0000);
bt3c_write(sc, BT3C_TX_COUNT, 0x0000);
bt3c_write(sc, BT3C_ISR, 0x0000);
DELAY(1000);
out:
firmware_free(buf, size);
firmware_close(fh);
return err;
}
/**************************************************************************
*
* bt device callbacks
*/
/*
* start sending on bt3c
* should be called at spltty() when BT3C_XMIT is not set
*/
static void
bt3c_start(struct bt3c_softc *sc)
{
struct mbuf *m;
KASSERT((sc->sc_flags & BT3C_XMIT) == 0);
KASSERT(sc->sc_txp == NULL);
if (MBUFQ_FIRST(&sc->sc_cmdq)) {
MBUFQ_DEQUEUE(&sc->sc_cmdq, m);
sc->sc_stats.cmd_tx++;
goto start;
}
if (MBUFQ_FIRST(&sc->sc_scoq)) {
MBUFQ_DEQUEUE(&sc->sc_scoq, m);
sc->sc_stats.sco_tx++;
goto start;
}
if (MBUFQ_FIRST(&sc->sc_aclq)) {
MBUFQ_DEQUEUE(&sc->sc_aclq, m);
sc->sc_stats.acl_tx++;
goto start;
}
/* Nothing to send */
return;
start:
sc->sc_txp = m;
sc->sc_flags |= BT3C_XMIT;
bt3c_transmit(sc);
}
static void
bt3c_output_cmd(device_t self, struct mbuf *m)
{
struct bt3c_softc *sc = device_private(self);
int s;
KASSERT(sc->sc_flags & BT3C_ENABLED);
M_SETCTX(m, NULL);
s = spltty();
MBUFQ_ENQUEUE(&sc->sc_cmdq, m);
if ((sc->sc_flags & BT3C_XMIT) == 0)
bt3c_start(sc);
splx(s);
}
static void
bt3c_output_acl(device_t self, struct mbuf *m)
{
struct bt3c_softc *sc = device_private(self);
int s;
KASSERT(sc->sc_flags & BT3C_ENABLED);
M_SETCTX(m, NULL);
s = spltty();
MBUFQ_ENQUEUE(&sc->sc_aclq, m);
if ((sc->sc_flags & BT3C_XMIT) == 0)
bt3c_start(sc);
splx(s);
}
static void
bt3c_output_sco(device_t self, struct mbuf *m)
{
struct bt3c_softc *sc = device_private(self);
int s;
KASSERT(sc->sc_flags & BT3C_ENABLED);
s = spltty();
MBUFQ_ENQUEUE(&sc->sc_scoq, m);
if ((sc->sc_flags & BT3C_XMIT) == 0)
bt3c_start(sc);
splx(s);
}
/*
* enable device
* turn on card
* load firmware
* establish interrupts
*/
static int
bt3c_enable(device_t self)
{
struct bt3c_softc *sc = device_private(self);
int err, s;
if (sc->sc_flags & BT3C_ENABLED)
return 0;
s = spltty();
sc->sc_intr = pcmcia_intr_establish(sc->sc_pf, IPL_TTY, bt3c_intr, sc);
if (sc->sc_intr == NULL) {
err = EIO;
goto bad;
}
err = pcmcia_function_enable(sc->sc_pf);
if (err)
goto bad1;
err = bt3c_load_firmware(sc);
if (err)
goto bad2;
sc->sc_flags |= BT3C_ENABLED;
sc->sc_flags &= ~BT3C_XMIT;
splx(s);
return 0;
bad2:
pcmcia_function_disable(sc->sc_pf);
bad1:
pcmcia_intr_disestablish(sc->sc_pf, sc->sc_intr);
sc->sc_intr = NULL;
bad:
splx(s);
return err;
}
/*
* disable device
* shut down card
* disestablish interrupts
* free held packets
*/
static void
bt3c_disable(device_t self)
{
struct bt3c_softc *sc = device_private(self);
int s;
if ((sc->sc_flags & BT3C_ENABLED) == 0)
return;
s = spltty();
pcmcia_function_disable(sc->sc_pf);
if (sc->sc_intr) {
pcmcia_intr_disestablish(sc->sc_pf, sc->sc_intr);
sc->sc_intr = NULL;
}
if (sc->sc_rxp) {
m_freem(sc->sc_rxp);
sc->sc_rxp = NULL;
}
if (sc->sc_txp) {
m_freem(sc->sc_txp);
sc->sc_txp = NULL;
}
MBUFQ_DRAIN(&sc->sc_cmdq);
MBUFQ_DRAIN(&sc->sc_aclq);
MBUFQ_DRAIN(&sc->sc_scoq);
sc->sc_flags &= ~BT3C_ENABLED;
splx(s);
}
void
bt3c_stats(device_t self, struct bt_stats *dest, int flush)
{
struct bt3c_softc *sc = device_private(self);
int s;
s = spltty();
memcpy(dest, &sc->sc_stats, sizeof(struct bt_stats));
if (flush)
memset(&sc->sc_stats, 0, sizeof(struct bt_stats));
splx(s);
}
/**************************************************************************
*
* bt3c PCMCIA autoconfig glue
*/
static int
bt3c_match(device_t parent, struct cfdata *match, void *aux)
{
struct pcmcia_attach_args *pa = aux;
if (pa->manufacturer == PCMCIA_VENDOR_3COM &&
pa->product == PCMCIA_PRODUCT_3COM_3CRWB6096)
return 10; /* 'com' also claims this, so trump them */
return 0;
}
static void
bt3c_attach(device_t parent, device_t self, void *aux)
{
struct bt3c_softc *sc = device_private(self);
struct pcmcia_attach_args *pa = aux;
struct pcmcia_config_entry *cfe;
sc->sc_dev = self;
sc->sc_pf = pa->pf;
MBUFQ_INIT(&sc->sc_cmdq);
MBUFQ_INIT(&sc->sc_aclq);
MBUFQ_INIT(&sc->sc_scoq);
/* Find a PCMCIA config entry we can use */
SIMPLEQ_FOREACH(cfe, &pa->pf->cfe_head, cfe_list) {
if (cfe->num_memspace != 0)
continue;
if (cfe->num_iospace != 1)
continue;
if (pcmcia_io_alloc(pa->pf, cfe->iospace[0].start,
cfe->iospace[0].length, 0, &sc->sc_pcioh) == 0)
break;
}
if (cfe == 0) {
aprint_error("bt3c_attach: cannot allocate io space\n");
goto no_config_entry;
}
/* Initialise it */
pcmcia_function_init(pa->pf, cfe);
/* Map in the io space */
if (pcmcia_io_map(pa->pf, PCMCIA_WIDTH_AUTO,
&sc->sc_pcioh, &sc->sc_iow)) {
aprint_error("bt3c_attach: cannot map io space\n");
goto iomap_failed;
}
/* Attach Bluetooth unit */
sc->sc_unit = hci_attach(&bt3c_hci, self, BTF_POWER_UP_NOOP);
/* establish a power change hook */
sc->sc_powerhook = powerhook_establish(device_xname(sc->sc_dev),
bt3c_power, sc);
return;
iomap_failed:
/* unmap io space */
pcmcia_io_free(pa->pf, &sc->sc_pcioh);
no_config_entry:
sc->sc_iow = -1;
}
static int
bt3c_detach(device_t self, int flags)
{
struct bt3c_softc *sc = device_private(self);
int err = 0;
bt3c_disable(self);
if (sc->sc_powerhook) {
powerhook_disestablish(sc->sc_powerhook);
sc->sc_powerhook = NULL;
}
if (sc->sc_unit) {
hci_detach(sc->sc_unit);
sc->sc_unit = NULL;
}
if (sc->sc_iow != -1) {
pcmcia_io_unmap(sc->sc_pf, sc->sc_iow);
pcmcia_io_free(sc->sc_pf, &sc->sc_pcioh);
sc->sc_iow = -1;
}
return err;
}
static void
bt3c_power(int why, void *arg)
{
struct bt3c_softc *sc = arg;
switch(why) {
case PWR_SUSPEND:
case PWR_STANDBY:
if (sc->sc_flags & BT3C_ENABLED) {
if (sc->sc_unit) {
hci_detach(sc->sc_unit);
sc->sc_unit = NULL;
}
sc->sc_flags |= BT3C_SLEEPING;
aprint_verbose_dev(sc->sc_dev, "sleeping\n");
}
break;
case PWR_RESUME:
if (sc->sc_flags & BT3C_SLEEPING) {
aprint_verbose_dev(sc->sc_dev, "waking up\n");
sc->sc_flags &= ~BT3C_SLEEPING;
sc->sc_unit = hci_attach(&bt3c_hci, sc->sc_dev,
BTF_POWER_UP_NOOP);
}
break;
case PWR_SOFTSUSPEND:
case PWR_SOFTSTANDBY:
case PWR_SOFTRESUME:
break;
}
}
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