/*
* packet info function
*/
-void usbhs_pkt_update(struct usbhs_pkt *pkt,
- struct usbhs_pipe *pipe,
- void *buf, int len)
+static int usbhsf_null_handle(struct usbhs_pkt *pkt)
{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ dev_err(dev, "null handler\n");
+
+ return -EINVAL;
+}
+
+static struct usbhs_pkt_handle usbhsf_null_handler = {
+ .prepare = usbhsf_null_handle,
+ .try_run = usbhsf_null_handle,
+};
+
+void usbhs_pkt_init(struct usbhs_pkt *pkt)
+{
+ INIT_LIST_HEAD(&pkt->node);
+}
+
+void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
+ struct usbhs_pkt_handle *handler,
+ void *buf, int len, int zero)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ if (!handler) {
+ dev_err(dev, "no handler function\n");
+ handler = &usbhsf_null_handler;
+ }
+
+ list_del_init(&pkt->node);
+ list_add_tail(&pkt->node, &pipe->list);
+
pkt->pipe = pipe;
pkt->buf = buf;
+ pkt->handler = handler;
pkt->length = len;
+ pkt->zero = zero;
pkt->actual = 0;
- pkt->maxp = 0;
+}
+
+void usbhs_pkt_pop(struct usbhs_pkt *pkt)
+{
+ list_del_init(&pkt->node);
+}
+
+struct usbhs_pkt *usbhs_pkt_get(struct usbhs_pipe *pipe)
+{
+ if (list_empty(&pipe->list))
+ return NULL;
+
+ return list_entry(pipe->list.next, struct usbhs_pkt, node);
+}
+
+/*
+ * irq enable/disable function
+ */
+#define usbhsf_irq_empty_ctrl(p, e) usbhsf_irq_callback_ctrl(p, bempsts, e)
+#define usbhsf_irq_ready_ctrl(p, e) usbhsf_irq_callback_ctrl(p, brdysts, e)
+#define usbhsf_irq_callback_ctrl(pipe, status, enable) \
+ ({ \
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); \
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv); \
+ u16 status = (1 << usbhs_pipe_number(pipe)); \
+ if (!mod) \
+ return; \
+ if (enable) \
+ mod->irq_##status |= status; \
+ else \
+ mod->irq_##status &= ~status; \
+ usbhs_irq_callback_update(priv, mod); \
+ })
+
+static void usbhsf_tx_irq_ctrl(struct usbhs_pipe *pipe, int enable)
+{
+ /*
+ * And DCP pipe can NOT use "ready interrupt" for "send"
+ * it should use "empty" interrupt.
+ * see
+ * "Operation" - "Interrupt Function" - "BRDY Interrupt"
+ *
+ * on the other hand, normal pipe can use "ready interrupt" for "send"
+ * even though it is single/double buffer
+ */
+ if (usbhs_pipe_is_dcp(pipe))
+ usbhsf_irq_empty_ctrl(pipe, enable);
+ else
+ usbhsf_irq_ready_ctrl(pipe, enable);
+}
+
+static void usbhsf_rx_irq_ctrl(struct usbhs_pipe *pipe, int enable)
+{
+ usbhsf_irq_ready_ctrl(pipe, enable);
}
/*
/*
* PIO fifo functions
*/
-int usbhs_fifo_prepare_write(struct usbhs_pipe *pipe)
-{
- return usbhsf_fifo_select(pipe, 1);
-}
-
-int usbhs_fifo_write(struct usbhs_pkt *pkt)
+static int usbhsf_try_push(struct usbhs_pkt *pkt)
{
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
void __iomem *addr = priv->base + CFIFO;
+ u8 *buf;
int maxp = usbhs_pipe_get_maxpacket(pipe);
int total_len;
- u8 *buf = pkt->buf;
int i, ret, len;
+ int is_short, is_done;
- ret = usbhs_pipe_is_accessible(pipe);
+ ret = usbhsf_fifo_select(pipe, 1);
if (ret < 0)
- return ret;
+ goto usbhs_fifo_write_busy;
- ret = usbhsf_fifo_select(pipe, 1);
+ ret = usbhs_pipe_is_accessible(pipe);
if (ret < 0)
- return ret;
+ goto usbhs_fifo_write_busy;
ret = usbhsf_fifo_barrier(priv);
if (ret < 0)
- return ret;
+ goto usbhs_fifo_write_busy;
- len = min(pkt->length, maxp);
- total_len = len;
+ buf = pkt->buf + pkt->actual;
+ len = pkt->length - pkt->actual;
+ len = min(len, maxp);
+ total_len = len;
+ is_short = total_len < maxp;
/*
* FIXME
*
* 32-bit access only
*/
- if (len >= 4 &&
- !((unsigned long)buf & 0x03)) {
+ if (len >= 4 && !((unsigned long)buf & 0x03)) {
iowrite32_rep(addr, buf, len / 4);
len %= 4;
buf += total_len - len;
for (i = 0; i < len; i++)
iowrite8(buf[i], addr + (0x03 - (i & 0x03)));
- if (total_len < maxp)
+ /*
+ * variable update
+ */
+ pkt->actual += total_len;
+
+ if (pkt->actual < pkt->length)
+ is_done = 0; /* there are remainder data */
+ else if (is_short)
+ is_done = 1; /* short packet */
+ else
+ is_done = !pkt->zero; /* send zero packet ? */
+
+ /*
+ * pipe/irq handling
+ */
+ if (is_short)
usbhsf_send_terminator(pipe);
+ usbhsf_tx_irq_ctrl(pipe, !is_done);
usbhs_pipe_enable(pipe);
- /* update pkt */
- if (info->tx_done) {
- pkt->actual = total_len;
- pkt->maxp = maxp;
- info->tx_done(pkt);
+ dev_dbg(dev, " send %d (%d/ %d/ %d/ %d)\n",
+ usbhs_pipe_number(pipe),
+ pkt->length, pkt->actual, is_done, pkt->zero);
+
+ /*
+ * Transmission end
+ */
+ if (is_done) {
+ if (usbhs_pipe_is_dcp(pipe))
+ usbhs_dcp_control_transfer_done(pipe);
+
+ info->done(pkt);
}
return 0;
+
+usbhs_fifo_write_busy:
+ /*
+ * pipe is busy.
+ * retry in interrupt
+ */
+ usbhsf_tx_irq_ctrl(pipe, 1);
+
+ return ret;
}
-int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe)
+struct usbhs_pkt_handle usbhs_fifo_push_handler = {
+ .prepare = usbhsf_try_push,
+ .try_run = usbhsf_try_push,
+};
+
+static int usbhsf_prepare_pop(struct usbhs_pkt *pkt)
{
+ struct usbhs_pipe *pipe = pkt->pipe;
int ret;
/*
return ret;
usbhs_pipe_enable(pipe);
+ usbhsf_rx_irq_ctrl(pipe, 1);
return ret;
}
-int usbhs_fifo_read(struct usbhs_pkt *pkt)
+static int usbhsf_try_pop(struct usbhs_pkt *pkt)
{
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
- struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+ struct device *dev = usbhs_priv_to_dev(priv);
void __iomem *addr = priv->base + CFIFO;
- u8 *buf = pkt->buf;
+ u8 *buf;
+ u32 data = 0;
+ int maxp = usbhs_pipe_get_maxpacket(pipe);
int rcv_len, len;
int i, ret;
int total_len = 0;
- u32 data = 0;
+ int is_done = 0;
ret = usbhsf_fifo_select(pipe, 0);
if (ret < 0)
rcv_len = usbhsf_fifo_rcv_len(priv);
+ buf = pkt->buf + pkt->actual;
+ len = pkt->length - pkt->actual;
+ len = min(len, rcv_len);
+ total_len = len;
+
/*
* Buffer clear if Zero-Length packet
*
goto usbhs_fifo_read_end;
}
- len = min(rcv_len, pkt->length);
- total_len = len;
-
/*
* FIXME
*
* 32-bit access only
*/
- if (len >= 4 &&
- !((unsigned long)buf & 0x03)) {
+ if (len >= 4 && !((unsigned long)buf & 0x03)) {
ioread32_rep(addr, buf, len / 4);
len %= 4;
- buf += rcv_len - len;
+ buf += total_len - len;
}
/* the rest operation */
buf[i] = (data >> ((i & 0x03) * 8)) & 0xff;
}
+ pkt->actual += total_len;
+
usbhs_fifo_read_end:
- if (info->rx_done) {
- /* update pkt */
- pkt->actual = total_len;
- pkt->maxp = usbhs_pipe_get_maxpacket(pipe);
- info->rx_done(pkt);
+ if ((pkt->actual == pkt->length) || /* receive all data */
+ (total_len < maxp)) /* short packet */
+ is_done = 1;
+
+ dev_dbg(dev, " recv %d (%d/ %d/ %d/ %d)\n",
+ usbhs_pipe_number(pipe),
+ pkt->length, pkt->actual, is_done, pkt->zero);
+
+ if (is_done) {
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+
+ usbhsf_rx_irq_ctrl(pipe, 0);
+ usbhs_pipe_disable(pipe);
+
+ info->done(pkt);
}
return 0;
}
+
+struct usbhs_pkt_handle usbhs_fifo_pop_handler = {
+ .prepare = usbhsf_prepare_pop,
+ .try_run = usbhsf_try_pop,
+};
+
+/*
+ * handler function
+ */
+static int usbhsf_ctrl_stage_end(struct usbhs_pkt *pkt)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+
+ usbhs_dcp_control_transfer_done(pipe);
+
+ info->done(pkt);
+
+ return 0;
+}
+
+struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler = {
+ .prepare = usbhsf_ctrl_stage_end,
+ .try_run = usbhsf_ctrl_stage_end,
+};
+
+/*
+ * irq functions
+ */
+static int usbhsf_irq_empty(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhs_pipe *pipe;
+ struct usbhs_pkt *pkt;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int i, ret;
+
+ if (!irq_state->bempsts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts);
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->bempsts & (1 << i)))
+ continue;
+
+ pkt = usbhs_pkt_get(pipe);
+ ret = usbhs_pkt_run(pkt);
+ if (ret < 0)
+ dev_err(dev, "irq_empty run_error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+static int usbhsf_irq_ready(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhs_pipe *pipe;
+ struct usbhs_pkt *pkt;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int i, ret;
+
+ if (!irq_state->brdysts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts);
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->brdysts & (1 << i)))
+ continue;
+
+ pkt = usbhs_pkt_get(pipe);
+ ret = usbhs_pkt_run(pkt);
+ if (ret < 0)
+ dev_err(dev, "irq_ready run_error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+/*
+ * fifo init
+ */
+void usbhs_fifo_init(struct usbhs_priv *priv)
+{
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+
+ mod->irq_empty = usbhsf_irq_empty;
+ mod->irq_ready = usbhsf_irq_ready;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+}
+
+void usbhs_fifo_quit(struct usbhs_priv *priv)
+{
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+
+ mod->irq_empty = NULL;
+ mod->irq_ready = NULL;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+}
git.openpandora.org / pandora-kernel.git / blobdiff