summaryrefslogtreecommitdiff
path: root/chip/stm32/usb_dwc.c
diff options
context:
space:
mode:
Diffstat (limited to 'chip/stm32/usb_dwc.c')
-rw-r--r--chip/stm32/usb_dwc.c174
1 files changed, 79 insertions, 95 deletions
diff --git a/chip/stm32/usb_dwc.c b/chip/stm32/usb_dwc.c
index 0028806432..67f89a5222 100644
--- a/chip/stm32/usb_dwc.c
+++ b/chip/stm32/usb_dwc.c
@@ -1,8 +1,9 @@
-/* Copyright 2016 The Chromium OS Authors. All rights reserved.
+/* Copyright 2016 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
+#include "builtin/assert.h"
#include "clock.h"
#include "common.h"
#include "config.h"
@@ -20,19 +21,17 @@
#include "usb_descriptor.h"
#include "watchdog.h"
-
/****************************************************************************/
/* Debug output */
/* Console output macro */
-#define CPRINTS(format, args...) cprints(CC_USB, format, ## args)
-#define CPRINTF(format, args...) cprintf(CC_USB, format, ## args)
+#define CPRINTS(format, args...) cprints(CC_USB, format, ##args)
+#define CPRINTF(format, args...) cprintf(CC_USB, format, ##args)
/* TODO: Something unexpected happened. Figure out how to report & fix it. */
-#define report_error(val) \
- CPRINTS("Unhandled USB event at %s line %d: 0x%x", \
- __FILE__, __LINE__, val)
-
+#define report_error(val) \
+ CPRINTS("Unhandled USB event at %s line %d: 0x%x", __FILE__, __LINE__, \
+ val)
/****************************************************************************/
/* Standard USB stuff */
@@ -49,7 +48,7 @@
#endif
#ifndef CONFIG_USB_BCD_DEV
-#define CONFIG_USB_BCD_DEV 0x0100 /* 1.00 */
+#define CONFIG_USB_BCD_DEV 0x0100 /* 1.00 */
#endif
#ifndef CONFIG_USB_SERIALNO
@@ -58,7 +57,6 @@
static int usb_load_serial(void);
#endif
-
/* USB Standard Device Descriptor */
static const struct usb_device_descriptor dev_desc = {
.bLength = USB_DT_DEVICE_SIZE,
@@ -81,25 +79,24 @@ static const struct usb_device_descriptor dev_desc = {
const struct usb_config_descriptor USB_CONF_DESC(conf) = {
.bLength = USB_DT_CONFIG_SIZE,
.bDescriptorType = USB_DT_CONFIGURATION,
- .wTotalLength = 0x0BAD, /* number of returned bytes, set at runtime */
+ .wTotalLength = 0x0BAD, /* number of returned bytes, set at runtime */
.bNumInterfaces = USB_IFACE_COUNT,
- .bConfigurationValue = 1, /* Caution: hard-coded value */
+ .bConfigurationValue = 1, /* Caution: hard-coded value */
.iConfiguration = USB_STR_VERSION,
.bmAttributes = 0x80 /* Reserved bit */
-#ifdef CONFIG_USB_SELF_POWERED /* bus or self powered */
- | 0x40
+#ifdef CONFIG_USB_SELF_POWERED /* bus or self powered */
+ | 0x40
#endif
#ifdef CONFIG_USB_REMOTE_WAKEUP
- | 0x20
+ | 0x20
#endif
,
.bMaxPower = (CONFIG_USB_MAXPOWER_MA / 2),
};
const uint8_t usb_string_desc[] = {
- 4, /* Descriptor size */
- USB_DT_STRING,
- 0x09, 0x04 /* LangID = 0x0409: U.S. English */
+ 4, /* Descriptor size */
+ USB_DT_STRING, 0x09, 0x04 /* LangID = 0x0409: U.S. English */
};
/****************************************************************************/
@@ -113,7 +110,7 @@ static enum {
} what_am_i_doing;
#ifdef DEBUG_ME
-static const char * const wat[3] = {
+static const char *const wat[3] = {
[WAITING_FOR_SETUP_PACKET] = "wait_for_setup",
[DATA_STAGE_IN] = "data_in",
[NO_DATA_STAGE] = "no_data",
@@ -182,7 +179,6 @@ static enum {
} device_state;
static uint8_t configuration_value;
-
/* True if the HW Rx/OUT FIFO is currently listening. */
int rx_ep_is_active(uint32_t ep_num)
{
@@ -326,10 +322,9 @@ void usb_epN_rx(uint32_t ep_num)
/* Bytes received decrement DOEPTSIZ XFERSIZE */
if (GR_USB_DOEPINT(ep_num) & DOEPINT_XFERCOMPL) {
if (ep->out_expected > 0) {
- ep->out_pending =
- ep->out_expected -
- (GR_USB_DOEPTSIZ(ep_num) &
- GC_USB_DOEPTSIZ1_XFERSIZE_MASK);
+ ep->out_pending = ep->out_expected -
+ (GR_USB_DOEPTSIZ(ep_num) &
+ GC_USB_DOEPTSIZ1_XFERSIZE_MASK);
} else {
CPRINTF("usb_ep%d_rx: unexpected RX DOEPTSIZ %08x\n",
ep_num, GR_USB_DOEPTSIZ(ep_num));
@@ -350,25 +345,22 @@ void usb_epN_rx(uint32_t ep_num)
void epN_reset(uint32_t ep_num)
{
GR_USB_DOEPCTL(ep_num) = DXEPCTL_MPS(USB_MAX_PACKET_SIZE) |
- DXEPCTL_USBACTEP | DXEPCTL_EPTYPE_BULK;
+ DXEPCTL_USBACTEP | DXEPCTL_EPTYPE_BULK;
GR_USB_DIEPCTL(ep_num) = DXEPCTL_MPS(USB_MAX_PACKET_SIZE) |
- DXEPCTL_USBACTEP | DXEPCTL_EPTYPE_BULK |
- DXEPCTL_TXFNUM(ep_num);
- GR_USB_DAINTMSK |= DAINT_INEP(ep_num) |
- DAINT_OUTEP(ep_num);
+ DXEPCTL_USBACTEP | DXEPCTL_EPTYPE_BULK |
+ DXEPCTL_TXFNUM(ep_num);
+ GR_USB_DAINTMSK |= DAINT_INEP(ep_num) | DAINT_OUTEP(ep_num);
}
-
/******************************************************************************
* Internal and EP0 functions.
*/
-
static void flush_all_fifos(void)
{
/* Flush all FIFOs according to Section 2.1.1.2 */
- GR_USB_GRSTCTL = GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH
- | GRSTCTL_RXFFLSH;
+ GR_USB_GRSTCTL = GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH |
+ GRSTCTL_RXFFLSH;
while (GR_USB_GRSTCTL & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH))
;
}
@@ -390,7 +382,6 @@ int send_in_packet(uint32_t ep_num)
GR_USB_DIEPTSIZ(0) |= DXEPTSIZ_XFERSIZE(len);
GR_USB_DIEPDMA(0) = (uint32_t)ep->in_data;
-
/* We're sending this much. */
ep->in_pending -= len;
ep->in_packets -= 1;
@@ -400,7 +391,6 @@ int send_in_packet(uint32_t ep_num)
return len;
}
-
/* Load the EP0 IN FIFO buffer with some data (zero-length works too). Returns
* len, or negative on error.
*/
@@ -418,7 +408,7 @@ int initialize_in_transfer(const void *source, uint32_t len)
#else
/* HS OTG port requires an external phy to support HS */
ASSERT(!((usb->phy_type == USB_PHY_INTERNAL) &&
- (usb->speed == USB_SPEED_HS)));
+ (usb->speed == USB_SPEED_HS)));
ASSERT(usb->irq == STM32_IRQ_OTG_HS);
#endif
@@ -435,7 +425,7 @@ int initialize_in_transfer(const void *source, uint32_t len)
/* We will send as many packets as necessary, including a final
* packet of < USB_MAX_PACKET_SIZE (maybe zero length)
*/
- ep->in_packets = (len + USB_MAX_PACKET_SIZE)/USB_MAX_PACKET_SIZE;
+ ep->in_packets = (len + USB_MAX_PACKET_SIZE) / USB_MAX_PACKET_SIZE;
ep->in_pending = len;
send_in_packet(0);
@@ -495,8 +485,8 @@ static void expect_data_phase_in(enum table_case tc)
/* Send the reply (data phase in) */
if (tc == TABLE_CASE_SETUP)
- GR_USB_DIEPCTL(0) |= DXEPCTL_USBACTEP |
- DXEPCTL_CNAK | DXEPCTL_EPENA;
+ GR_USB_DIEPCTL(0) |= DXEPCTL_USBACTEP | DXEPCTL_CNAK |
+ DXEPCTL_EPENA;
else
GR_USB_DIEPCTL(0) |= DXEPCTL_EPENA;
@@ -508,7 +498,6 @@ static void expect_data_phase_in(enum table_case tc)
/* Get an interrupt when either IN or OUT arrives */
GR_USB_DAINTMSK |= (DAINT_OUTEP(0) | DAINT_INEP(0));
-
}
static void expect_data_phase_out(enum table_case tc)
@@ -524,12 +513,12 @@ static void expect_status_phase_in(enum table_case tc)
what_am_i_doing = NO_DATA_STAGE;
/* Expect a zero-length IN for the Status phase */
- (void) initialize_in_transfer(0, 0);
+ (void)initialize_in_transfer(0, 0);
/* Blindly following instructions here, too. */
if (tc == TABLE_CASE_SETUP)
- GR_USB_DIEPCTL(0) |= DXEPCTL_USBACTEP
- | DXEPCTL_CNAK | DXEPCTL_EPENA;
+ GR_USB_DIEPCTL(0) |= DXEPCTL_USBACTEP | DXEPCTL_CNAK |
+ DXEPCTL_EPENA;
else
GR_USB_DIEPCTL(0) |= DXEPCTL_EPENA;
@@ -549,7 +538,7 @@ static int handle_setup_with_in_stage(enum table_case tc,
const void *data = 0;
uint32_t len = 0;
int ugly_hack = 0;
- static const uint16_t zero; /* == 0 */
+ static const uint16_t zero; /* == 0 */
switch (req->bRequest) {
case USB_REQ_GET_DESCRIPTOR: {
@@ -564,7 +553,7 @@ static int handle_setup_with_in_stage(enum table_case tc,
case USB_DT_CONFIGURATION:
data = __usb_desc;
len = USB_DESC_SIZE;
- ugly_hack = 1; /* see below */
+ ugly_hack = 1; /* see below */
break;
#ifdef CONFIG_USB_BOS
case USB_DT_BOS:
@@ -657,7 +646,7 @@ static int handle_setup_with_in_stage(enum table_case tc,
/* Handle a Setup that comes with additional data for us. */
static int handle_setup_with_out_stage(enum table_case tc,
- struct usb_setup_packet *req)
+ struct usb_setup_packet *req)
{
/* TODO: We don't support any of these. We should. */
report_error(-1);
@@ -720,7 +709,7 @@ static int handle_setup_with_no_data_stage(enum table_case tc,
configuration_value = req->wValue;
device_state = DS_ADDRESS;
break;
- case 1: /* Caution: Only one config descriptor TODAY */
+ case 1: /* Caution: Only one config descriptor TODAY */
/* TODO: All endpoints set to DATA0 toggle state */
configuration_value = req->wValue;
device_state = DS_CONFIGURED;
@@ -756,7 +745,7 @@ static void handle_setup(enum table_case tc)
(struct usb_setup_packet *)ep->out_databuffer;
int data_phase_in = req->bmRequestType & USB_DIR_IN;
int data_phase_out = !data_phase_in && req->wLength;
- int bytes = -1; /* default is to stall */
+ int bytes = -1; /* default is to stall */
if (0 == (req->bmRequestType & (USB_TYPE_MASK | USB_RECIP_MASK))) {
/* Standard Device requests */
@@ -900,20 +889,20 @@ static void ep0_interrupt(uint32_t intr_on_out, uint32_t intr_on_in)
* We support up to 3 control EPs, no periodic IN EPs, up to 16 TX EPs. Max
* data packet size is 64 bytes. Total SPRAM available is 1024 slots.
*/
-#define MAX_CONTROL_EPS 3
-#define MAX_NORMAL_EPS 16
-#define FIFO_RAM_DEPTH 1024
+#define MAX_CONTROL_EPS 3
+#define MAX_NORMAL_EPS 16
+#define FIFO_RAM_DEPTH 1024
/*
* Device RX FIFO size is thus:
* (4 * 3 + 6) + 2 * ((64 / 4) + 1) + (2 * 16) + 1 == 85
*/
-#define RXFIFO_SIZE ((4 * MAX_CONTROL_EPS + 6) + \
- 2 * ((USB_MAX_PACKET_SIZE / 4) + 1) + \
- (2 * MAX_NORMAL_EPS) + 1)
+#define RXFIFO_SIZE \
+ ((4 * MAX_CONTROL_EPS + 6) + 2 * ((USB_MAX_PACKET_SIZE / 4) + 1) + \
+ (2 * MAX_NORMAL_EPS) + 1)
/*
* Device TX FIFO size is 2 * (64 / 4) == 32 for each IN EP (Page 46).
*/
-#define TXFIFO_SIZE (2 * (USB_MAX_PACKET_SIZE / 4))
+#define TXFIFO_SIZE (2 * (USB_MAX_PACKET_SIZE / 4))
/*
* We need 4 slots per endpoint direction for endpoint status stuff (Table 2-1,
* unconfigurable).
@@ -925,20 +914,19 @@ static void ep0_interrupt(uint32_t intr_on_out, uint32_t intr_on_in)
BUILD_ASSERT(RXFIFO_SIZE + TXFIFO_SIZE * MAX_NORMAL_EPS + EP_STATUS_SIZE <
FIFO_RAM_DEPTH);
-
/* Now put those constants into the correct registers */
static void setup_data_fifos(void)
{
int i;
/* Programmer's Guide, p31 */
- GR_USB_GRXFSIZ = RXFIFO_SIZE; /* RXFIFO */
+ GR_USB_GRXFSIZ = RXFIFO_SIZE; /* RXFIFO */
GR_USB_GNPTXFSIZ = (TXFIFO_SIZE << 16) | RXFIFO_SIZE; /* TXFIFO 0 */
/* TXFIFO 1..15 */
for (i = 1; i < MAX_NORMAL_EPS; i++)
- GR_USB_DIEPTXF(i) = ((TXFIFO_SIZE << 16) |
- (RXFIFO_SIZE + i * TXFIFO_SIZE));
+ GR_USB_DIEPTXF(i) =
+ ((TXFIFO_SIZE << 16) | (RXFIFO_SIZE + i * TXFIFO_SIZE));
/*
* TODO: The Programmer's Guide is confusing about when or whether to
@@ -953,10 +941,10 @@ static void setup_data_fifos(void)
*/
/* Flush all FIFOs according to Section 2.1.1.2 */
- GR_USB_GRSTCTL = GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH
- | GRSTCTL_RXFFLSH;
+ GR_USB_GRSTCTL = GRSTCTL_TXFNUM(0x10) | GRSTCTL_TXFFLSH |
+ GRSTCTL_RXFFLSH;
while (GR_USB_GRSTCTL & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH))
- ; /* TODO: timeout 100ms */
+ ; /* TODO: timeout 100ms */
}
static void usb_init_endpoints(void)
@@ -998,7 +986,6 @@ static void usb_enumdone(void)
GR_USB_DCTL |= DCTL_CGOUTNAK;
}
-
static void usb_interrupt(void)
{
uint32_t status = GR_USB_GINTSTS & GR_USB_GINTMSK;
@@ -1027,10 +1014,10 @@ static void usb_interrupt(void)
* let it know which direction(s) had an interrupt.
*/
if (daint & (DAINT_OUTEP(0) | DAINT_INEP(0))) {
- uint32_t intr_on_out = (oepint &&
- (daint & DAINT_OUTEP(0)));
- uint32_t intr_on_in = (iepint &&
- (daint & DAINT_INEP(0)));
+ uint32_t intr_on_out =
+ (oepint && (daint & DAINT_OUTEP(0)));
+ uint32_t intr_on_in =
+ (iepint && (daint & DAINT_INEP(0)));
ep0_interrupt(intr_on_out, intr_on_in);
}
@@ -1103,8 +1090,8 @@ void usb_reset_init_phy(void)
if (usb->phy_type == USB_PHY_ULPI) {
GR_USB_GCCFG &= ~GCCFG_PWRDWN;
- GR_USB_GUSBCFG &= ~(GUSBCFG_TSDPS |
- GUSBCFG_ULPIFSLS | GUSBCFG_PHYSEL);
+ GR_USB_GUSBCFG &=
+ ~(GUSBCFG_TSDPS | GUSBCFG_ULPIFSLS | GUSBCFG_PHYSEL);
GR_USB_GUSBCFG &= ~(GUSBCFG_ULPIEVBUSD | GUSBCFG_ULPIEVBUSI);
/* No suspend */
GR_USB_GUSBCFG |= GUSBCFG_ULPICSM | GUSBCFG_ULPIAR;
@@ -1168,11 +1155,11 @@ void usb_init(void)
* GR_USB_DCFG = (GR_USB_DCFG & ~GC_USB_DCFG_DEVSPD_MASK)
* | DCFG_DEVSPD_HSULPI;
*/
- GR_USB_DCFG = (GR_USB_DCFG & ~GC_USB_DCFG_DEVSPD_MASK)
- | DCFG_DEVSPD_FSULPI;
+ GR_USB_DCFG = (GR_USB_DCFG & ~GC_USB_DCFG_DEVSPD_MASK) |
+ DCFG_DEVSPD_FSULPI;
} else {
- GR_USB_DCFG = (GR_USB_DCFG & ~GC_USB_DCFG_DEVSPD_MASK)
- | DCFG_DEVSPD_FS48;
+ GR_USB_DCFG = (GR_USB_DCFG & ~GC_USB_DCFG_DEVSPD_MASK) |
+ DCFG_DEVSPD_FS48;
}
GR_USB_DCFG |= DCFG_NZLSOHSK;
@@ -1190,10 +1177,11 @@ void usb_init(void)
GR_USB_GAHBCFG |= GAHBCFG_TXFELVL | GAHBCFG_PTXFELVL;
/* Device only, no SRP */
- GR_USB_GUSBCFG |= GUSBCFG_FDMOD
- | GUSBCFG_TOUTCAL(7)
- /* FIXME: Magic number! 14 is for 15MHz! Use 9 for 30MHz */
- | GUSBCFG_USBTRDTIM(14);
+ GR_USB_GUSBCFG |= GUSBCFG_FDMOD |
+ GUSBCFG_TOUTCAL(7)
+ /* FIXME: Magic number! 14 is for 15MHz! Use 9 for
+ 30MHz */
+ | GUSBCFG_USBTRDTIM(14);
/* Be in disconnected state until we are ready */
usb_disconnect();
@@ -1225,15 +1213,15 @@ void usb_init(void)
if (usb->dma_en) {
GR_USB_DTHRCTL = DTHRCTL_TXTHRLEN_6 | DTHRCTL_RXTHRLEN_6;
- GR_USB_DTHRCTL |= DTHRCTL_RXTHREN | DTHRCTL_ISOTHREN
- | DTHRCTL_NONISOTHREN;
+ GR_USB_DTHRCTL |= DTHRCTL_RXTHREN | DTHRCTL_ISOTHREN |
+ DTHRCTL_NONISOTHREN;
i = GR_USB_DTHRCTL;
}
GR_USB_GINTSTS = 0xFFFFFFFF;
- GR_USB_GAHBCFG |= GAHBCFG_GLB_INTR_EN | GAHBCFG_TXFELVL
- | GAHBCFG_PTXFELVL;
+ GR_USB_GAHBCFG |= GAHBCFG_GLB_INTR_EN | GAHBCFG_TXFELVL |
+ GAHBCFG_PTXFELVL;
if (!(usb->dma_en))
GR_USB_GINTMSK |= GINTMSK(RXFLVL);
@@ -1241,7 +1229,7 @@ void usb_init(void)
/* Unmask some endpoint interrupt causes */
GR_USB_DIEPMSK = DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK;
GR_USB_DOEPMSK = DOEPMSK_EPDISBLDMSK | DOEPMSK_XFERCOMPLMSK |
- DOEPMSK_SETUPMSK;
+ DOEPMSK_SETUPMSK;
/* Enable interrupt handlers */
task_enable_irq(usb->irq);
@@ -1253,7 +1241,7 @@ void usb_init(void)
/* Initialization events */
GINTMSK(USBRST) | GINTMSK(ENUMDONE) |
/* Reset detected while suspended. Need to wake up. */
- GINTMSK(RESETDET) | /* TODO: Do we need this? */
+ GINTMSK(RESETDET) | /* TODO: Do we need this? */
/* Idle, Suspend detected. Should go to sleep. */
GINTMSK(ERLYSUSP) | GINTMSK(USBSUSP);
@@ -1314,7 +1302,7 @@ static void usb_info(void)
}
}
-static int command_usb(int argc, char **argv)
+static int command_usb(int argc, const char **argv)
{
if (argc > 1) {
if (!strcasecmp("on", argv[1]))
@@ -1328,8 +1316,7 @@ static int command_usb(int argc, char **argv)
return EC_ERROR_PARAM1;
}
-DECLARE_CONSOLE_COMMAND(usb, command_usb,
- "[on|off|info]",
+DECLARE_CONSOLE_COMMAND(usb, command_usb, "[on|off|info]",
"Get/set the USB connection state and PHY selection");
#ifdef CONFIG_USB_SERIALNO
@@ -1391,7 +1378,7 @@ static int usb_save_serial(const char *serialno)
return rv;
}
-static int command_serialno(int argc, char **argv)
+static int command_serialno(int argc, const char **argv)
{
struct usb_string_desc *sd = usb_serialno_desc;
char buf[CONFIG_SERIALNO_LEN];
@@ -1399,12 +1386,10 @@ static int command_serialno(int argc, char **argv)
int i;
if (argc != 1) {
- if ((strcasecmp(argv[1], "set") == 0) &&
- (argc == 3)) {
+ if ((strcasecmp(argv[1], "set") == 0) && (argc == 3)) {
ccprintf("Saving serial number\n");
rv = usb_save_serial(argv[2]);
- } else if ((strcasecmp(argv[1], "load") == 0) &&
- (argc == 2)) {
+ } else if ((strcasecmp(argv[1], "load") == 0) && (argc == 2)) {
ccprintf("Loading serial number\n");
rv = usb_load_serial();
} else
@@ -1417,7 +1402,6 @@ static int command_serialno(int argc, char **argv)
return rv;
}
-DECLARE_CONSOLE_COMMAND(serialno, command_serialno,
- "load/set [value]",
- "Read and write USB serial number");
-#endif /* CONFIG_USB_SERIALNO */
+DECLARE_CONSOLE_COMMAND(serialno, command_serialno, "load/set [value]",
+ "Read and write USB serial number");
+#endif /* CONFIG_USB_SERIALNO */
View Lorry Controller Status