diff options
Diffstat (limited to 'drivers/usb/gadget/udc/goku_udc.c')
| -rw-r--r-- | drivers/usb/gadget/udc/goku_udc.c | 233 |
1 files changed, 122 insertions, 111 deletions
diff --git a/drivers/usb/gadget/udc/goku_udc.c b/drivers/usb/gadget/udc/goku_udc.c index 5b9176e7202a..9e8d842e8c08 100644 --- a/drivers/usb/gadget/udc/goku_udc.c +++ b/drivers/usb/gadget/udc/goku_udc.c @@ -1024,35 +1024,79 @@ static const char proc_node_name [] = "driver/udc"; static void dump_intmask(struct seq_file *m, const char *label, u32 mask) { /* int_status is the same format ... */ - seq_printf(m, - "%s %05X =" FOURBITS EIGHTBITS EIGHTBITS "\n", - label, mask, - (mask & INT_PWRDETECT) ? " power" : "", - (mask & INT_SYSERROR) ? " sys" : "", - (mask & INT_MSTRDEND) ? " in-dma" : "", - (mask & INT_MSTWRTMOUT) ? " wrtmo" : "", - - (mask & INT_MSTWREND) ? " out-dma" : "", - (mask & INT_MSTWRSET) ? " wrset" : "", - (mask & INT_ERR) ? " err" : "", - (mask & INT_SOF) ? " sof" : "", - - (mask & INT_EP3NAK) ? " ep3nak" : "", - (mask & INT_EP2NAK) ? " ep2nak" : "", - (mask & INT_EP1NAK) ? " ep1nak" : "", - (mask & INT_EP3DATASET) ? " ep3" : "", - - (mask & INT_EP2DATASET) ? " ep2" : "", - (mask & INT_EP1DATASET) ? " ep1" : "", - (mask & INT_STATUSNAK) ? " ep0snak" : "", - (mask & INT_STATUS) ? " ep0status" : "", - - (mask & INT_SETUP) ? " setup" : "", - (mask & INT_ENDPOINT0) ? " ep0" : "", - (mask & INT_USBRESET) ? " reset" : "", - (mask & INT_SUSPEND) ? " suspend" : ""); + seq_printf(m, "%s %05X =" FOURBITS EIGHTBITS EIGHTBITS "\n", + label, mask, + (mask & INT_PWRDETECT) ? " power" : "", + (mask & INT_SYSERROR) ? " sys" : "", + (mask & INT_MSTRDEND) ? " in-dma" : "", + (mask & INT_MSTWRTMOUT) ? " wrtmo" : "", + + (mask & INT_MSTWREND) ? " out-dma" : "", + (mask & INT_MSTWRSET) ? " wrset" : "", + (mask & INT_ERR) ? " err" : "", + (mask & INT_SOF) ? " sof" : "", + + (mask & INT_EP3NAK) ? " ep3nak" : "", + (mask & INT_EP2NAK) ? " ep2nak" : "", + (mask & INT_EP1NAK) ? " ep1nak" : "", + (mask & INT_EP3DATASET) ? " ep3" : "", + + (mask & INT_EP2DATASET) ? " ep2" : "", + (mask & INT_EP1DATASET) ? " ep1" : "", + (mask & INT_STATUSNAK) ? " ep0snak" : "", + (mask & INT_STATUS) ? " ep0status" : "", + + (mask & INT_SETUP) ? " setup" : "", + (mask & INT_ENDPOINT0) ? " ep0" : "", + (mask & INT_USBRESET) ? " reset" : "", + (mask & INT_SUSPEND) ? " suspend" : ""); +} + +static const char *udc_ep_state(enum ep0state state) +{ + switch (state) { + case EP0_DISCONNECT: + return "ep0_disconnect"; + case EP0_IDLE: + return "ep0_idle"; + case EP0_IN: + return "ep0_in"; + case EP0_OUT: + return "ep0_out"; + case EP0_STATUS: + return "ep0_status"; + case EP0_STALL: + return "ep0_stall"; + case EP0_SUSPEND: + return "ep0_suspend"; + } + + return "ep0_?"; } +static const char *udc_ep_status(u32 status) +{ + switch (status & EPxSTATUS_EP_MASK) { + case EPxSTATUS_EP_READY: + return "ready"; + case EPxSTATUS_EP_DATAIN: + return "packet"; + case EPxSTATUS_EP_FULL: + return "full"; + case EPxSTATUS_EP_TX_ERR: /* host will retry */ + return "tx_err"; + case EPxSTATUS_EP_RX_ERR: + return "rx_err"; + case EPxSTATUS_EP_BUSY: /* ep0 only */ + return "busy"; + case EPxSTATUS_EP_STALL: + return "stall"; + case EPxSTATUS_EP_INVALID: /* these "can't happen" */ + return "invalid"; + } + + return "?"; +} static int udc_proc_read(struct seq_file *m, void *v) { @@ -1068,29 +1112,18 @@ static int udc_proc_read(struct seq_file *m, void *v) tmp = readl(®s->power_detect); is_usb_connected = tmp & PW_DETECT; seq_printf(m, - "%s - %s\n" - "%s version: %s %s\n" - "Gadget driver: %s\n" - "Host %s, %s\n" - "\n", - pci_name(dev->pdev), driver_desc, - driver_name, DRIVER_VERSION, dmastr(), - dev->driver ? dev->driver->driver.name : "(none)", - is_usb_connected - ? ((tmp & PW_PULLUP) ? "full speed" : "powered") - : "disconnected", - ({const char *state; - switch(dev->ep0state){ - case EP0_DISCONNECT: state = "ep0_disconnect"; break; - case EP0_IDLE: state = "ep0_idle"; break; - case EP0_IN: state = "ep0_in"; break; - case EP0_OUT: state = "ep0_out"; break; - case EP0_STATUS: state = "ep0_status"; break; - case EP0_STALL: state = "ep0_stall"; break; - case EP0_SUSPEND: state = "ep0_suspend"; break; - default: state = "ep0_?"; break; - } state; }) - ); + "%s - %s\n" + "%s version: %s %s\n" + "Gadget driver: %s\n" + "Host %s, %s\n" + "\n", + pci_name(dev->pdev), driver_desc, + driver_name, DRIVER_VERSION, dmastr(), + dev->driver ? dev->driver->driver.name : "(none)", + is_usb_connected + ? ((tmp & PW_PULLUP) ? "full speed" : "powered") + : "disconnected", + udc_ep_state(dev->ep0state)); dump_intmask(m, "int_status", readl(®s->int_status)); dump_intmask(m, "int_enable", readl(®s->int_enable)); @@ -1099,31 +1132,30 @@ static int udc_proc_read(struct seq_file *m, void *v) goto done; /* registers for (active) device and ep0 */ - if (seq_printf(m, "\nirqs %lu\ndataset %02x " - "single.bcs %02x.%02x state %x addr %u\n", - dev->irqs, readl(®s->DataSet), - readl(®s->EPxSingle), readl(®s->EPxBCS), - readl(®s->UsbState), - readl(®s->address)) < 0) + seq_printf(m, "\nirqs %lu\ndataset %02x single.bcs %02x.%02x state %x addr %u\n", + dev->irqs, readl(®s->DataSet), + readl(®s->EPxSingle), readl(®s->EPxBCS), + readl(®s->UsbState), + readl(®s->address)); + if (seq_has_overflowed(m)) goto done; tmp = readl(®s->dma_master); - if (seq_printf(m, - "dma %03X =" EIGHTBITS "%s %s\n", tmp, - (tmp & MST_EOPB_DIS) ? " eopb-" : "", - (tmp & MST_EOPB_ENA) ? " eopb+" : "", - (tmp & MST_TIMEOUT_DIS) ? " tmo-" : "", - (tmp & MST_TIMEOUT_ENA) ? " tmo+" : "", - - (tmp & MST_RD_EOPB) ? " eopb" : "", - (tmp & MST_RD_RESET) ? " in_reset" : "", - (tmp & MST_WR_RESET) ? " out_reset" : "", - (tmp & MST_RD_ENA) ? " IN" : "", - - (tmp & MST_WR_ENA) ? " OUT" : "", - (tmp & MST_CONNECTION) - ? "ep1in/ep2out" - : "ep1out/ep2in") < 0) + seq_printf(m, "dma %03X =" EIGHTBITS "%s %s\n", + tmp, + (tmp & MST_EOPB_DIS) ? " eopb-" : "", + (tmp & MST_EOPB_ENA) ? " eopb+" : "", + (tmp & MST_TIMEOUT_DIS) ? " tmo-" : "", + (tmp & MST_TIMEOUT_ENA) ? " tmo+" : "", + + (tmp & MST_RD_EOPB) ? " eopb" : "", + (tmp & MST_RD_RESET) ? " in_reset" : "", + (tmp & MST_WR_RESET) ? " out_reset" : "", + (tmp & MST_RD_ENA) ? " IN" : "", + + (tmp & MST_WR_ENA) ? " OUT" : "", + (tmp & MST_CONNECTION) ? "ep1in/ep2out" : "ep1out/ep2in"); + if (seq_has_overflowed(m)) goto done; /* dump endpoint queues */ @@ -1135,44 +1167,23 @@ static int udc_proc_read(struct seq_file *m, void *v) continue; tmp = readl(ep->reg_status); - if (seq_printf(m, - "%s %s max %u %s, irqs %lu, " - "status %02x (%s) " FOURBITS "\n", - ep->ep.name, - ep->is_in ? "in" : "out", - ep->ep.maxpacket, - ep->dma ? "dma" : "pio", - ep->irqs, - tmp, ({ char *s; - switch (tmp & EPxSTATUS_EP_MASK) { - case EPxSTATUS_EP_READY: - s = "ready"; break; - case EPxSTATUS_EP_DATAIN: - s = "packet"; break; - case EPxSTATUS_EP_FULL: - s = "full"; break; - case EPxSTATUS_EP_TX_ERR: // host will retry - s = "tx_err"; break; - case EPxSTATUS_EP_RX_ERR: - s = "rx_err"; break; - case EPxSTATUS_EP_BUSY: /* ep0 only */ - s = "busy"; break; - case EPxSTATUS_EP_STALL: - s = "stall"; break; - case EPxSTATUS_EP_INVALID: // these "can't happen" - s = "invalid"; break; - default: - s = "?"; break; - } s; }), - (tmp & EPxSTATUS_TOGGLE) ? "data1" : "data0", - (tmp & EPxSTATUS_SUSPEND) ? " suspend" : "", - (tmp & EPxSTATUS_FIFO_DISABLE) ? " disable" : "", - (tmp & EPxSTATUS_STAGE_ERROR) ? " ep0stat" : "" - ) < 0) + seq_printf(m, "%s %s max %u %s, irqs %lu, status %02x (%s) " FOURBITS "\n", + ep->ep.name, + ep->is_in ? "in" : "out", + ep->ep.maxpacket, + ep->dma ? "dma" : "pio", + ep->irqs, + tmp, udc_ep_status(tmp), + (tmp & EPxSTATUS_TOGGLE) ? "data1" : "data0", + (tmp & EPxSTATUS_SUSPEND) ? " suspend" : "", + (tmp & EPxSTATUS_FIFO_DISABLE) ? " disable" : "", + (tmp & EPxSTATUS_STAGE_ERROR) ? " ep0stat" : ""); + if (seq_has_overflowed(m)) goto done; if (list_empty(&ep->queue)) { - if (seq_puts(m, "\t(nothing queued)\n") < 0) + seq_puts(m, "\t(nothing queued)\n"); + if (seq_has_overflowed(m)) goto done; continue; } @@ -1187,10 +1198,10 @@ static int udc_proc_read(struct seq_file *m, void *v) } else tmp = req->req.actual; - if (seq_printf(m, - "\treq %p len %u/%u buf %p\n", - &req->req, tmp, req->req.length, - req->req.buf) < 0) + seq_printf(m, "\treq %p len %u/%u buf %p\n", + &req->req, tmp, req->req.length, + req->req.buf); + if (seq_has_overflowed(m)) goto done; } } |
