/*
* packet info function
*/
+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;
/*
* 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);
int i, ret, len;
int is_short, is_done;
- ret = usbhs_pipe_is_accessible(pipe);
+ ret = usbhsf_fifo_select(pipe, 1);
if (ret < 0)
goto usbhs_fifo_write_busy;
- ret = usbhsf_fifo_select(pipe, 1);
+ ret = usbhs_pipe_is_accessible(pipe);
if (ret < 0)
goto usbhs_fifo_write_busy;
if (usbhs_pipe_is_dcp(pipe))
usbhs_dcp_control_transfer_done(pipe);
- if (info->tx_done)
- info->tx_done(pkt);
+ info->done(pkt);
}
return 0;
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;
}
-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);
usbhsf_rx_irq_ctrl(pipe, 0);
usbhs_pipe_disable(pipe);
- if (info->rx_done)
- info->rx_done(pkt);
+ 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;
+}
#define EP_NAME_SIZE 8
struct usbhsg_gpriv;
-struct usbhsg_pipe_handle;
struct usbhsg_uep {
struct usb_ep ep;
struct usbhs_pipe *pipe;
char ep_name[EP_NAME_SIZE];
struct usbhsg_gpriv *gpriv;
- struct usbhsg_pipe_handle *handler;
+ struct usbhs_pkt_handle *handler;
};
struct usbhsg_gpriv {
#define USBHSG_STATUS_WEDGE (1 << 2)
};
-struct usbhsg_pipe_handle {
- int (*prepare)(struct usbhsg_uep *uep, struct usbhsg_request *ureq);
- int (*try_run)(struct usbhsg_uep *uep, struct usbhsg_request *ureq);
-};
-
struct usbhsg_recip_handle {
char *name;
int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep,
/*
********* assume under spin lock *********
*/
- usbhs_pkt_push(pipe, pkt, req->buf, req->length, req->zero);
+ usbhs_pkt_push(pipe, pkt, uep->handler,
+ req->buf, req->length, req->zero);
req->actual = 0;
req->status = -EINPROGRESS;
return usbhsg_pkt_to_ureq(pkt);
}
-#define usbhsg_queue_prepare(uep) __usbhsg_queue_handler(uep, 1);
-#define usbhsg_queue_handle(uep) __usbhsg_queue_handler(uep, 0);
-static int __usbhsg_queue_handler(struct usbhsg_uep *uep, int prepare)
+static int usbhsg_queue_start(struct usbhsg_uep *uep)
{
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep);
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- struct usbhsg_request *ureq;
+ struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
+ struct usbhs_pkt *pkt;
spinlock_t *lock;
unsigned long flags;
int ret = 0;
- if (!uep->handler) {
- dev_err(dev, "no handler function\n");
- return -EIO;
- }
-
/*
* CAUTION [*queue handler*]
*
/****************** spin try lock *******************/
lock = usbhsg_trylock(gpriv, &flags);
- ureq = usbhsg_queue_get(uep);
- if (ureq) {
- if (prepare)
- ret = uep->handler->prepare(uep, ureq);
- else
- ret = uep->handler->try_run(uep, ureq);
- }
+ pkt = usbhs_pkt_get(pipe);
+ if (pkt)
+ ret = usbhs_pkt_start(pkt);
+
usbhsg_unlock(lock, &flags);
/******************** spin unlock ******************/
/* more request ? */
if (0 == status)
- usbhsg_queue_prepare(uep);
+ usbhsg_queue_start(uep);
}
-/*
- * irq enable/disable function
- */
-#define usbhsg_irq_callback_ctrl(uep, status, enable) \
- ({ \
- struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); \
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); \
- struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); \
- struct usbhs_mod *mod = usbhs_mod_get_current(priv); \
- if (!mod) \
- return; \
- if (enable) \
- mod->irq_##status |= (1 << usbhs_pipe_number(pipe)); \
- else \
- mod->irq_##status &= ~(1 << usbhs_pipe_number(pipe)); \
- usbhs_irq_callback_update(priv, mod); \
- })
-
-static void usbhsg_irq_empty_ctrl(struct usbhsg_uep *uep, int enable)
-{
- usbhsg_irq_callback_ctrl(uep, bempsts, enable);
-}
-
-static void usbhsg_irq_ready_ctrl(struct usbhsg_uep *uep, int enable)
-{
- usbhsg_irq_callback_ctrl(uep, brdysts, enable);
-}
-
-/*
- * handler function
- */
-static int usbhsg_try_run_ctrl_stage_end(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
-{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-
- /*
- ********* assume under spin lock *********
- */
-
- usbhs_dcp_control_transfer_done(pipe);
- usbhsg_queue_pop(uep, ureq, 0);
-
- return 0;
-}
-
-/*
- * packet send hander
- */
-static void usbhsg_send_packet_done(struct usbhs_pkt *pkt)
+static void usbhsg_queue_done(struct usbhs_pkt *pkt)
{
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
usbhsg_queue_pop(uep, ureq, 0);
}
-static int usbhsg_try_run_send_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
-{
- struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
-
- /*
- ********* assume under spin lock *********
- */
-
- usbhs_fifo_write(pkt);
-
- return 0;
-}
-
-static int usbhsg_prepare_send_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
-{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-
- /*
- ********* assume under spin lock *********
- */
-
- usbhs_fifo_prepare_write(pipe);
- usbhsg_try_run_send_packet(uep, ureq);
-
- return 0;
-}
-
-/*
- * packet recv hander
- */
-static void usbhsg_receive_packet_done(struct usbhs_pkt *pkt)
-{
- struct usbhs_pipe *pipe = pkt->pipe;
- struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe);
- struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt);
-
- ureq->req.actual = pkt->actual;
-
- usbhsg_queue_pop(uep, ureq, 0);
-}
-
-static int usbhsg_try_run_receive_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
-{
- struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq);
-
- /*
- ********* assume under spin lock *********
- */
-
- return usbhs_fifo_read(pkt);
-}
-
-static int usbhsg_prepare_receive_packet(struct usbhsg_uep *uep,
- struct usbhsg_request *ureq)
-{
- struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
-
- /*
- ********* assume under spin lock *********
- */
-
- return usbhs_fifo_prepare_read(pipe);
-}
-
-static struct usbhsg_pipe_handle usbhsg_handler_send_by_empty = {
- .prepare = usbhsg_prepare_send_packet,
- .try_run = usbhsg_try_run_send_packet,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_send_by_ready = {
- .prepare = usbhsg_prepare_send_packet,
- .try_run = usbhsg_try_run_send_packet,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_recv_by_ready = {
- .prepare = usbhsg_prepare_receive_packet,
- .try_run = usbhsg_try_run_receive_packet,
-};
-
-static struct usbhsg_pipe_handle usbhsg_handler_ctrl_stage_end = {
- .prepare = usbhsg_try_run_ctrl_stage_end,
- .try_run = usbhsg_try_run_ctrl_stage_end,
-};
-
-/*
- * 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
- */
-#define usbhsg_handler_send_ctrl usbhsg_handler_send_by_empty
-#define usbhsg_handler_recv_ctrl usbhsg_handler_recv_by_ready
-
-#define usbhsg_handler_send_packet usbhsg_handler_send_by_ready
-#define usbhsg_handler_recv_packet usbhsg_handler_recv_by_ready
-
/*
* USB_TYPE_STANDARD / clear feature functions
*/
usbhsg_recip_handler_std_control_done(priv, uep, ctrl);
- usbhsg_queue_prepare(uep);
+ usbhsg_queue_start(uep);
return 0;
}
switch (stage) {
case READ_DATA_STAGE:
- dcp->handler = &usbhsg_handler_send_ctrl;
+ dcp->handler = &usbhs_fifo_push_handler;
break;
case WRITE_DATA_STAGE:
- dcp->handler = &usbhsg_handler_recv_ctrl;
+ dcp->handler = &usbhs_fifo_pop_handler;
break;
case NODATA_STATUS_STAGE:
- dcp->handler = &usbhsg_handler_ctrl_stage_end;
+ dcp->handler = &usbhs_ctrl_stage_end_handler;
break;
default:
return ret;
return ret;
}
-static int usbhsg_irq_empty(struct usbhs_priv *priv,
- struct usbhs_irq_state *irq_state)
-{
- struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
- struct usbhsg_uep *uep;
- struct usbhs_pipe *pipe;
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- 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;
-
- uep = usbhsg_pipe_to_uep(pipe);
- ret = usbhsg_queue_handle(uep);
- if (ret < 0)
- dev_err(dev, "send error %d : %d\n", i, ret);
- }
-
- return 0;
-}
-
-static int usbhsg_irq_ready(struct usbhs_priv *priv,
- struct usbhs_irq_state *irq_state)
-{
- struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
- struct usbhsg_uep *uep;
- struct usbhs_pipe *pipe;
- struct device *dev = usbhsg_gpriv_to_dev(gpriv);
- 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;
-
- uep = usbhsg_pipe_to_uep(pipe);
- ret = usbhsg_queue_handle(uep);
- if (ret < 0)
- dev_err(dev, "receive error %d : %d\n", i, ret);
- }
-
- return 0;
-}
-
/*
*
* usb_dcp_ops
{
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep);
struct usbhsg_request *ureq;
- int disable = 0;
/*
********* assume under spin lock *********
usbhs_pipe_disable(pipe);
- /*
- * disable pipe irq
- */
- usbhsg_irq_empty_ctrl(uep, disable);
- usbhsg_irq_ready_ctrl(uep, disable);
-
while (1) {
ureq = usbhsg_queue_get(uep);
if (!ureq)
pipe->mod_private = uep;
if (usb_endpoint_dir_in(desc))
- uep->handler = &usbhsg_handler_send_packet;
+ uep->handler = &usbhs_fifo_push_handler;
else
- uep->handler = &usbhsg_handler_recv_packet;
+ uep->handler = &usbhs_fifo_pop_handler;
ret = 0;
}
usbhsg_unlock(lock, &flags);
/******************** spin unlock ******************/
- usbhsg_queue_prepare(uep);
+ usbhsg_queue_start(uep);
return ret;
}
* pipe initialize and enable DCP
*/
usbhs_pipe_init(priv,
- usbhsg_send_packet_done,
- usbhsg_receive_packet_done);
+ usbhsg_queue_done);
+ usbhs_fifo_init(priv);
usbhsg_uep_init(gpriv);
usbhsg_dcp_enable(dcp);
*/
mod->irq_dev_state = usbhsg_irq_dev_state;
mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
- mod->irq_empty = usbhsg_irq_empty;
- mod->irq_ready = usbhsg_irq_ready;
- mod->irq_bempsts = 0;
- mod->irq_brdysts = 0;
usbhs_irq_callback_update(priv, mod);
usbhsg_try_start_unlock:
!usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
goto usbhsg_try_stop_unlock;
+ usbhs_fifo_quit(priv);
+
/* disable all irq */
mod->irq_dev_state = NULL;
mod->irq_ctrl_stage = NULL;
- mod->irq_empty = NULL;
- mod->irq_ready = NULL;
- mod->irq_bempsts = 0;
- mod->irq_brdysts = 0;
usbhs_irq_callback_update(priv, mod);
usbhsg_dcp_disable(dcp);
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff