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linux-davinci
Commit 78cf0747 authored by Holger Schurig's avatar Holger Schurig Committed by John W. Linville
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libertas: unify various CF-related defines 

Signed-off-by: default avatarHolger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 2d892986
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Showing with 79 additions and 93 deletions
drivers/net/wireless/libertas/if_cs.c
View file @ 78cf0747
......@@ -159,56 +159,40 @@ static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 r
/* Host control registers and their bit definitions */
/* First the bitmasks for the host/card interrupt/status registers: */
#define IF_CS_BIT_TX 0x0001
#define IF_CS_BIT_RX 0x0002
#define IF_CS_BIT_COMMAND 0x0004
#define IF_CS_BIT_RESP 0x0008
#define IF_CS_BIT_EVENT 0x0010
#define IF_CS_BIT_MASK 0x001f
#define IF_CS_H_STATUS 0x00000000
#define IF_CS_H_STATUS_TX_OVER 0x0001
#define IF_CS_H_STATUS_RX_OVER 0x0002
#define IF_CS_H_STATUS_DNLD_OVER 0x0004
/* And now the individual registers and assorted masks */
#define IF_CS_HOST_STATUS 0x00000000
#define IF_CS_H_INT_CAUSE 0x00000002
#define IF_CS_H_IC_TX_OVER 0x0001
#define IF_CS_H_IC_RX_OVER 0x0002
#define IF_CS_H_IC_DNLD_OVER 0x0004
#define IF_CS_H_IC_POWER_DOWN 0x0008
#define IF_CS_H_IC_HOST_EVENT 0x0010
#define IF_CS_H_IC_MASK 0x001f
#define IF_CS_HOST_INT_CAUSE 0x00000002
#define IF_CS_H_INT_MASK 0x00000004
#define IF_CS_H_IM_MASK 0x001f
#define IF_CS_HOST_INT_MASK 0x00000004
#define IF_CS_H_WRITE_LEN 0x00000014
#define IF_CS_HOST_WRITE 0x00000016
#define IF_CS_HOST_WRITE_LEN 0x00000014
#define IF_CS_H_WRITE 0x00000016
#define IF_CS_HOST_CMD 0x0000001A
#define IF_CS_HOST_CMD_LEN 0x00000018
#define IF_CS_H_CMD_LEN 0x00000018
#define IF_CS_READ 0x00000010
#define IF_CS_READ_LEN 0x00000024
#define IF_CS_H_CMD 0x0000001A
#define IF_CS_CARD_CMD 0x00000012
#define IF_CS_CARD_CMD_LEN 0x00000030
#define IF_CS_C_READ_LEN 0x00000024
#define IF_CS_CARD_STATUS 0x00000020
#define IF_CS_CARD_STATUS_MASK 0x7f00
#define IF_CS_H_READ 0x00000010
#define IF_CS_CARD_INT_CAUSE 0x00000022
/* Card control registers and their bit definitions */
#define IF_CS_C_STATUS 0x00000020
#define IF_CS_C_S_TX_DNLD_RDY 0x0001
#define IF_CS_C_S_RX_UPLD_RDY 0x0002
#define IF_CS_C_S_CMD_DNLD_RDY 0x0004
#define IF_CS_C_S_CMD_UPLD_RDY 0x0008
#define IF_CS_C_S_CARDEVENT 0x0010
#define IF_CS_C_S_MASK 0x001f
#define IF_CS_C_S_STATUS_MASK 0x7f00
#define IF_CS_C_INT_CAUSE 0x00000022
#define IF_CS_C_IC_MASK 0x001f
#define IF_CS_C_SQ_READ_LOW 0x00000028
#define IF_CS_C_SQ_HELPER_OK 0x10
#define IF_CS_C_CMD_LEN 0x00000030
#define IF_CS_C_CMD 0x00000012
#define IF_CS_CARD_SQ_READ_LOW 0x00000028
#define IF_CS_CARD_SQ_HELPER_OK 0x10
#define IF_CS_SCRATCH 0x0000003F
......@@ -221,13 +205,13 @@ static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 r
static inline void if_cs_enable_ints(struct if_cs_card *card)
{
lbs_deb_enter(LBS_DEB_CS);
if_cs_write16(card, IF_CS_H_INT_MASK, 0);
if_cs_write16(card, IF_CS_HOST_INT_MASK, 0);
}
static inline void if_cs_disable_ints(struct if_cs_card *card)
{
lbs_deb_enter(LBS_DEB_CS);
if_cs_write16(card, IF_CS_H_INT_MASK, IF_CS_H_IM_MASK);
if_cs_write16(card, IF_CS_HOST_INT_MASK, IF_CS_BIT_MASK);
}
/*
......@@ -244,8 +228,8 @@ static int if_cs_send_cmd(struct lbs_private *priv, u8 *buf, u16 nb)
/* Is hardware ready? */
while (1) {
u16 val = if_cs_read16(card, IF_CS_C_STATUS);
if (val & IF_CS_C_S_CMD_DNLD_RDY)
u16 val = if_cs_read16(card, IF_CS_CARD_STATUS);
if (val & IF_CS_BIT_COMMAND)
break;
if (++loops > 100) {
lbs_pr_err("card not ready for commands\n");
......@@ -254,20 +238,20 @@ static int if_cs_send_cmd(struct lbs_private *priv, u8 *buf, u16 nb)
mdelay(1);
}
if_cs_write16(card, IF_CS_H_CMD_LEN, nb);
if_cs_write16(card, IF_CS_HOST_CMD_LEN, nb);
if_cs_write16_rep(card, IF_CS_H_CMD, buf, nb / 2);
if_cs_write16_rep(card, IF_CS_HOST_CMD, buf, nb / 2);
/* Are we supposed to transfer an odd amount of bytes? */
if (nb & 1)
if_cs_write8(card, IF_CS_H_CMD, buf[nb-1]);
if_cs_write8(card, IF_CS_HOST_CMD, buf[nb-1]);
/* "Assert the download over interrupt command in the Host
* status register" */
if_cs_write16(card, IF_CS_H_STATUS, IF_CS_H_STATUS_DNLD_OVER);
if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
/* "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);
if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
ret = 0;
done:
......@@ -287,18 +271,18 @@ static void if_cs_send_data(struct lbs_private *priv, u8 *buf, u16 nb)
lbs_deb_enter(LBS_DEB_CS);
if_cs_disable_ints(card);
status = if_cs_read16(card, IF_CS_C_STATUS);
BUG_ON((status & IF_CS_C_S_TX_DNLD_RDY) == 0);
status = if_cs_read16(card, IF_CS_CARD_STATUS);
BUG_ON((status & IF_CS_BIT_TX) == 0);
if_cs_write16(card, IF_CS_H_WRITE_LEN, nb);
if_cs_write16(card, IF_CS_HOST_WRITE_LEN, nb);
/* write even number of bytes, then odd byte if necessary */
if_cs_write16_rep(card, IF_CS_H_WRITE, buf, nb / 2);
if_cs_write16_rep(card, IF_CS_HOST_WRITE, buf, nb / 2);
if (nb & 1)
if_cs_write8(card, IF_CS_H_WRITE, buf[nb-1]);
if_cs_write8(card, IF_CS_HOST_WRITE, buf[nb-1]);
if_cs_write16(card, IF_CS_H_STATUS, IF_CS_H_STATUS_TX_OVER);
if_cs_write16(card, IF_CS_H_INT_CAUSE, IF_CS_H_STATUS_TX_OVER);
if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_TX);
if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_TX);
if_cs_enable_ints(card);
lbs_deb_leave(LBS_DEB_CS);
......@@ -311,27 +295,28 @@ static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len)
{
unsigned long flags;
int ret = -1;
u16 val;
u16 status;
lbs_deb_enter(LBS_DEB_CS);
/* is hardware ready? */
val = if_cs_read16(priv->card, IF_CS_C_STATUS);
if ((val & IF_CS_C_S_CMD_UPLD_RDY) == 0) {
lbs_pr_err("card not ready for CMD\n");
status = if_cs_read16(priv->card, IF_CS_CARD_STATUS);
if ((status & IF_CS_BIT_RESP) == 0) {
lbs_pr_err("no cmd response in card\n");
*len = 0;
goto out;
}
*len = if_cs_read16(priv->card, IF_CS_C_CMD_LEN);
*len = if_cs_read16(priv->card, IF_CS_CARD_CMD_LEN);
if ((*len == 0) || (*len > LBS_CMD_BUFFER_SIZE)) {
lbs_pr_err("card cmd buffer has invalid # of bytes (%d)\n", *len);
goto out;
}
/* read even number of bytes, then odd byte if necessary */
if_cs_read16_rep(priv->card, IF_CS_C_CMD, data, *len/sizeof(u16));
if_cs_read16_rep(priv->card, IF_CS_CARD_CMD, data, *len/sizeof(u16));
if (*len & 1)
data[*len-1] = if_cs_read8(priv->card, IF_CS_C_CMD);
data[*len-1] = if_cs_read8(priv->card, IF_CS_CARD_CMD);
/* This is a workaround for a firmware that reports too much
* bytes */
......@@ -356,7 +341,7 @@ static struct sk_buff *if_cs_receive_data(struct lbs_private *priv)
lbs_deb_enter(LBS_DEB_CS);
len = if_cs_read16(priv->card, IF_CS_C_READ_LEN);
len = if_cs_read16(priv->card, IF_CS_READ_LEN);
if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
lbs_pr_err("card data buffer has invalid # of bytes (%d)\n", len);
priv->stats.rx_dropped++;
......@@ -371,13 +356,13 @@ static struct sk_buff *if_cs_receive_data(struct lbs_private *priv)
data = skb->data;
/* read even number of bytes, then odd byte if necessary */
if_cs_read16_rep(priv->card, IF_CS_H_READ, data, len/sizeof(u16));
if_cs_read16_rep(priv->card, IF_CS_READ, data, len/sizeof(u16));
if (len & 1)
data[len-1] = if_cs_read8(priv->card, IF_CS_H_READ);
data[len-1] = if_cs_read8(priv->card, IF_CS_READ);
dat_err:
if_cs_write16(priv->card, IF_CS_H_STATUS, IF_CS_H_STATUS_RX_OVER);
if_cs_write16(priv->card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_RX_OVER);
if_cs_write16(priv->card, IF_CS_HOST_STATUS, IF_CS_BIT_RX);
if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_RX);
out:
lbs_deb_leave_args(LBS_DEB_CS, "ret %p", skb);
......@@ -393,7 +378,7 @@ static irqreturn_t if_cs_interrupt(int irq, void *data)
lbs_deb_enter(LBS_DEB_CS);
/* Ask card interrupt cause register if there is something for us */
cause = if_cs_read16(card, IF_CS_C_INT_CAUSE);
cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE);
if (cause == 0) {
/* Not for us */
return IRQ_NONE;
......@@ -406,10 +391,10 @@ static irqreturn_t if_cs_interrupt(int irq, void *data)
}
/* Clear interrupt cause */
if_cs_write16(card, IF_CS_C_INT_CAUSE, cause & IF_CS_C_IC_MASK);
if_cs_write16(card, IF_CS_CARD_INT_CAUSE, cause & IF_CS_BIT_MASK);
lbs_deb_cs("cause 0x%04x\n", cause);
if (cause & IF_CS_C_S_RX_UPLD_RDY) {
if (cause & IF_CS_BIT_RX) {
struct sk_buff *skb;
lbs_deb_cs("rx packet\n");
skb = if_cs_receive_data(priv);
......@@ -417,12 +402,12 @@ static irqreturn_t if_cs_interrupt(int irq, void *data)
lbs_process_rxed_packet(priv, skb);
}
if (cause & IF_CS_H_IC_TX_OVER) {
if (cause & IF_CS_BIT_TX) {
lbs_deb_cs("tx done\n");
lbs_host_to_card_done(priv);
}
if (cause & IF_CS_C_S_CMD_UPLD_RDY) {
if (cause & IF_CS_BIT_RESP) {
unsigned long flags;
u8 i;
......@@ -440,11 +425,11 @@ static irqreturn_t if_cs_interrupt(int irq, void *data)
spin_unlock_irqrestore(&priv->driver_lock, flags);
}
if (cause & IF_CS_H_IC_HOST_EVENT) {
u16 event = if_cs_read16(priv->card, IF_CS_C_STATUS)
& IF_CS_C_S_STATUS_MASK;
if_cs_write16(priv->card, IF_CS_H_INT_CAUSE,
IF_CS_H_IC_HOST_EVENT);
if (cause & IF_CS_BIT_EVENT) {
u16 event = if_cs_read16(priv->card, IF_CS_CARD_STATUS)
& IF_CS_CARD_STATUS_MASK;
if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE,
IF_CS_BIT_EVENT);
lbs_deb_cs("host event 0x%04x\n", event);
lbs_queue_event(priv, event >> 8 & 0xff);
}
......@@ -511,26 +496,26 @@ static int if_cs_prog_helper(struct if_cs_card *card)
/* "write the number of bytes to be sent to the I/O Command
* write length register" */
if_cs_write16(card, IF_CS_H_CMD_LEN, count);
if_cs_write16(card, IF_CS_HOST_CMD_LEN, count);
/* "write this to I/O Command port register as 16 bit writes */
if (count)
if_cs_write16_rep(card, IF_CS_H_CMD,
if_cs_write16_rep(card, IF_CS_HOST_CMD,
&fw->data[sent],
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);
if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
/* "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);
if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
/* "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);
ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS,
IF_CS_BIT_COMMAND);
if (ret < 0) {
lbs_pr_err("can't download helper at 0x%x, ret %d\n",
sent, ret);
......@@ -572,14 +557,15 @@ static int if_cs_prog_real(struct if_cs_card *card)
}
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);
ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_SQ_READ_LOW,
IF_CS_CARD_SQ_HELPER_OK);
if (ret < 0) {
lbs_pr_err("helper firmware doesn't answer\n");
goto err_release;
}
for (sent = 0; sent < fw->size; sent += len) {
len = if_cs_read16(card, IF_CS_C_SQ_READ_LOW);
len = if_cs_read16(card, IF_CS_CARD_SQ_READ_LOW);
if (len & 1) {
retry++;
lbs_pr_info("odd, need to retry this firmware block\n");
......@@ -597,16 +583,16 @@ static int if_cs_prog_real(struct if_cs_card *card)
}
if_cs_write16(card, IF_CS_H_CMD_LEN, len);
if_cs_write16(card, IF_CS_HOST_CMD_LEN, len);
if_cs_write16_rep(card, IF_CS_H_CMD,
if_cs_write16_rep(card, IF_CS_HOST_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);
if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND);
if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND);
ret = if_cs_poll_while_fw_download(card, IF_CS_C_STATUS,
IF_CS_C_S_CMD_DNLD_RDY);
ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS,
IF_CS_BIT_COMMAND);
if (ret < 0) {
lbs_pr_err("can't download firmware at 0x%x\n", sent);
goto err_release;
......@@ -834,7 +820,7 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
/* 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_write16(card, IF_CS_CARD_INT_CAUSE, IF_CS_BIT_MASK);
if_cs_enable_ints(card);
/* And finally bring the card up */
......
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