#include <linux/kthread.h>
#include <linux/list.h>
#include <linux/netdevice.h>
+#include <linux/semaphore.h>
#include <linux/spi/libertas_spi.h>
#include <linux/spi/spi.h>
#include "dev.h"
#include "if_spi.h"
-struct if_spi_packet {
- struct list_head list;
- u16 blen;
- u8 buffer[0] __attribute__((aligned(4)));
-};
-
struct if_spi_card {
struct spi_device *spi;
struct lbs_private *priv;
struct semaphore spi_thread_terminated;
u8 cmd_buffer[IF_SPI_CMD_BUF_SIZE];
-
- /* A buffer of incoming packets from libertas core.
- * Since we can't sleep in hw_host_to_card, we have to buffer
- * them. */
- struct list_head cmd_packet_list;
- struct list_head data_packet_list;
-
- /* Protects cmd_packet_list and data_packet_list */
- spinlock_t buffer_lock;
};
static void free_if_spi_card(struct if_spi_card *card)
{
- struct list_head *cursor, *next;
- struct if_spi_packet *packet;
-
- BUG_ON(card->run_thread);
- list_for_each_safe(cursor, next, &card->cmd_packet_list) {
- packet = container_of(cursor, struct if_spi_packet, list);
- list_del(&packet->list);
- kfree(packet);
- }
- list_for_each_safe(cursor, next, &card->data_packet_list) {
- packet = container_of(cursor, struct if_spi_packet, list);
- list_del(&packet->list);
- kfree(packet);
- }
spi_set_drvdata(card->spi, NULL);
kfree(card);
}
static int spu_write(struct if_spi_card *card, u16 reg, const u8 *buf, int len)
{
int err = 0;
- u16 reg_out = cpu_to_le16(reg | IF_SPI_WRITE_OPERATION_MASK);
+ __le16 reg_out = cpu_to_le16(reg | IF_SPI_WRITE_OPERATION_MASK);
struct spi_message m;
struct spi_transfer reg_trans;
struct spi_transfer data_trans;
static inline int spu_write_u16(struct if_spi_card *card, u16 reg, u16 val)
{
- u16 buff;
+ __le16 buff;
buff = cpu_to_le16(val);
return spu_write(card, reg, (u8 *)&buff, sizeof(u16));
{
unsigned int delay;
int err = 0;
- u16 reg_out = cpu_to_le16(reg | IF_SPI_READ_OPERATION_MASK);
+ __le16 reg_out = cpu_to_le16(reg | IF_SPI_READ_OPERATION_MASK);
struct spi_message m;
struct spi_transfer reg_trans;
struct spi_transfer dummy_trans;
/* Read 16 bits from an SPI register */
static inline int spu_read_u16(struct if_spi_card *card, u16 reg, u16 *val)
{
- u16 buf;
+ __le16 buf;
int ret;
ret = spu_read(card, reg, (u8 *)&buf, sizeof(buf));
* The low 16 bits are read first. */
static int spu_read_u32(struct if_spi_card *card, u16 reg, u32 *val)
{
- u32 buf;
+ __le32 buf;
int err;
err = spu_read(card, reg, (u8 *)&buf, sizeof(buf));
return err;
}
-/* Move data or a command from the host to the card. */
-static void if_spi_h2c(struct if_spi_card *card,
- struct if_spi_packet *packet, int type)
-{
- int err = 0;
- u16 int_type, port_reg;
-
- switch (type) {
- case MVMS_DAT:
- int_type = IF_SPI_CIC_TX_DOWNLOAD_OVER;
- port_reg = IF_SPI_DATA_RDWRPORT_REG;
- break;
- case MVMS_CMD:
- int_type = IF_SPI_CIC_CMD_DOWNLOAD_OVER;
- port_reg = IF_SPI_CMD_RDWRPORT_REG;
- break;
- default:
- lbs_pr_err("can't transfer buffer of type %d\n", type);
- err = -EINVAL;
- goto out;
- }
-
- /* Write the data to the card */
- err = spu_write(card, port_reg, packet->buffer, packet->blen);
- if (err)
- goto out;
-
-out:
- kfree(packet);
-
- if (err)
- lbs_pr_err("%s: error %d\n", __func__, err);
-}
-
/* Inform the host about a card event */
static void if_spi_e2h(struct if_spi_card *card)
{
int err;
struct if_spi_card *card = data;
u16 hiStatus;
- unsigned long flags;
- struct if_spi_packet *packet;
while (1) {
/* Wait to be woken up by one of two things. First, our ISR
if (hiStatus & IF_SPI_HIST_CMD_DOWNLOAD_RDY ||
(card->priv->psstate != PS_STATE_FULL_POWER &&
(hiStatus & IF_SPI_HIST_TX_DOWNLOAD_RDY))) {
- /* This means two things. First of all,
- * if there was a previous command sent, the card has
- * successfully received it.
- * Secondly, it is now ready to download another
- * command.
- */
lbs_host_to_card_done(card->priv);
-
- /* Do we have any command packets from the host to
- * send? */
- packet = NULL;
- spin_lock_irqsave(&card->buffer_lock, flags);
- if (!list_empty(&card->cmd_packet_list)) {
- packet = (struct if_spi_packet *)(card->
- cmd_packet_list.next);
- list_del(&packet->list);
- }
- spin_unlock_irqrestore(&card->buffer_lock, flags);
-
- if (packet)
- if_spi_h2c(card, packet, MVMS_CMD);
}
- if (hiStatus & IF_SPI_HIST_TX_DOWNLOAD_RDY) {
- /* Do we have any data packets from the host to
- * send? */
- packet = NULL;
- spin_lock_irqsave(&card->buffer_lock, flags);
- if (!list_empty(&card->data_packet_list)) {
- packet = (struct if_spi_packet *)(card->
- data_packet_list.next);
- list_del(&packet->list);
- }
- spin_unlock_irqrestore(&card->buffer_lock, flags);
- if (packet)
- if_spi_h2c(card, packet, MVMS_DAT);
- }
if (hiStatus & IF_SPI_HIST_CARD_EVENT)
if_spi_e2h(card);
u8 type, u8 *buf, u16 nb)
{
int err = 0;
- unsigned long flags;
struct if_spi_card *card = priv->card;
- struct if_spi_packet *packet;
- u16 blen;
lbs_deb_enter_args(LBS_DEB_SPI, "type %d, bytes %d", type, nb);
- if (nb == 0) {
- lbs_pr_err("%s: invalid size requested: %d\n", __func__, nb);
- err = -EINVAL;
- goto out;
- }
- blen = ALIGN(nb, 4);
- packet = kzalloc(sizeof(struct if_spi_packet) + blen, GFP_ATOMIC);
- if (!packet) {
- err = -ENOMEM;
- goto out;
- }
- packet->blen = blen;
- memcpy(packet->buffer, buf, nb);
- memset(packet->buffer + nb, 0, blen - nb);
+ nb = ALIGN(nb, 4);
switch (type) {
case MVMS_CMD:
- priv->dnld_sent = DNLD_CMD_SENT;
- spin_lock_irqsave(&card->buffer_lock, flags);
- list_add_tail(&packet->list, &card->cmd_packet_list);
- spin_unlock_irqrestore(&card->buffer_lock, flags);
+ err = spu_write(card, IF_SPI_CMD_RDWRPORT_REG, buf, nb);
break;
case MVMS_DAT:
- priv->dnld_sent = DNLD_DATA_SENT;
- spin_lock_irqsave(&card->buffer_lock, flags);
- list_add_tail(&packet->list, &card->data_packet_list);
- spin_unlock_irqrestore(&card->buffer_lock, flags);
+ err = spu_write(card, IF_SPI_DATA_RDWRPORT_REG, buf, nb);
break;
default:
lbs_pr_err("can't transfer buffer of type %d", type);
break;
}
- /* Wake up the spi thread */
- up(&card->spi_ready);
-out:
lbs_deb_leave_args(LBS_DEB_SPI, "err=%d", err);
return err;
}
chip_id_to_device_name[i].name);
return 0;
}
+MODULE_FIRMWARE("libertas/gspi8385_hlp.bin");
+MODULE_FIRMWARE("libertas/gspi8385.bin");
+MODULE_FIRMWARE("libertas/gspi8686_hlp.bin");
+MODULE_FIRMWARE("libertas/gspi8686.bin");
static int __devinit if_spi_probe(struct spi_device *spi)
{
sema_init(&card->spi_ready, 0);
sema_init(&card->spi_thread_terminated, 0);
- INIT_LIST_HEAD(&card->cmd_packet_list);
- INIT_LIST_HEAD(&card->data_packet_list);
- spin_lock_init(&card->buffer_lock);
/* Initialize the SPI Interface Unit */
err = spu_init(card, pdata->use_dummy_writes);
card->priv = priv;
priv->card = card;
priv->hw_host_to_card = if_spi_host_to_card;
+ priv->enter_deep_sleep = NULL;
+ priv->exit_deep_sleep = NULL;
+ priv->reset_deep_sleep_wakeup = NULL;
priv->fw_ready = 1;
/* Initialize interrupt handling stuff. */
goto terminate_thread;
}
+ /* poke the IRQ handler so that we don't miss the first interrupt */
+ up(&card->spi_ready);
+
/* Start the card.
* This will call register_netdev, and we'll start
* getting interrupts... */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff