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-rw-r--r--drivers/tty/n_gsm.c4
-rw-r--r--drivers/tty/rpmsg_tty.c40
-rw-r--r--drivers/tty/serial/8250/8250_of.c11
-rw-r--r--drivers/tty/serial/8250/8250_pci.c100
-rw-r--r--drivers/tty/serial/8250/8250_port.c61
-rw-r--r--drivers/tty/serial/amba-pl011.c11
-rw-r--r--drivers/tty/serial/serial_core.c34
-rw-r--r--drivers/tty/serial/stm32-usart.c14
-rw-r--r--include/uapi/linux/cyclades.h35
-rw-r--r--usr/include/Makefile1
10 files changed, 205 insertions, 106 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index ba27b274c967..0b1808e3a912 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -322,6 +322,7 @@ static int addr_cnt;
#define GSM1_ESCAPE_BITS 0x20
#define XON 0x11
#define XOFF 0x13
+#define ISO_IEC_646_MASK 0x7F
static const struct tty_port_operations gsm_port_ops;
@@ -531,7 +532,8 @@ static int gsm_stuff_frame(const u8 *input, u8 *output, int len)
int olen = 0;
while (len--) {
if (*input == GSM1_SOF || *input == GSM1_ESCAPE
- || *input == XON || *input == XOFF) {
+ || (*input & ISO_IEC_646_MASK) == XON
+ || (*input & ISO_IEC_646_MASK) == XOFF) {
*output++ = GSM1_ESCAPE;
*output++ = *input++ ^ GSM1_ESCAPE_BITS;
olen++;
diff --git a/drivers/tty/rpmsg_tty.c b/drivers/tty/rpmsg_tty.c
index dae2a4e44f38..29db413bbc03 100644
--- a/drivers/tty/rpmsg_tty.c
+++ b/drivers/tty/rpmsg_tty.c
@@ -50,10 +50,17 @@ static int rpmsg_tty_cb(struct rpmsg_device *rpdev, void *data, int len, void *p
static int rpmsg_tty_install(struct tty_driver *driver, struct tty_struct *tty)
{
struct rpmsg_tty_port *cport = idr_find(&tty_idr, tty->index);
+ struct tty_port *port;
tty->driver_data = cport;
- return tty_port_install(&cport->port, driver, tty);
+ port = tty_port_get(&cport->port);
+ return tty_port_install(port, driver, tty);
+}
+
+static void rpmsg_tty_cleanup(struct tty_struct *tty)
+{
+ tty_port_put(tty->port);
}
static int rpmsg_tty_open(struct tty_struct *tty, struct file *filp)
@@ -106,12 +113,19 @@ static unsigned int rpmsg_tty_write_room(struct tty_struct *tty)
return size;
}
+static void rpmsg_tty_hangup(struct tty_struct *tty)
+{
+ tty_port_hangup(tty->port);
+}
+
static const struct tty_operations rpmsg_tty_ops = {
.install = rpmsg_tty_install,
.open = rpmsg_tty_open,
.close = rpmsg_tty_close,
.write = rpmsg_tty_write,
.write_room = rpmsg_tty_write_room,
+ .hangup = rpmsg_tty_hangup,
+ .cleanup = rpmsg_tty_cleanup,
};
static struct rpmsg_tty_port *rpmsg_tty_alloc_cport(void)
@@ -137,8 +151,10 @@ static struct rpmsg_tty_port *rpmsg_tty_alloc_cport(void)
return cport;
}
-static void rpmsg_tty_release_cport(struct rpmsg_tty_port *cport)
+static void rpmsg_tty_destruct_port(struct tty_port *port)
{
+ struct rpmsg_tty_port *cport = container_of(port, struct rpmsg_tty_port, port);
+
mutex_lock(&idr_lock);
idr_remove(&tty_idr, cport->id);
mutex_unlock(&idr_lock);
@@ -146,7 +162,10 @@ static void rpmsg_tty_release_cport(struct rpmsg_tty_port *cport)
kfree(cport);
}
-static const struct tty_port_operations rpmsg_tty_port_ops = { };
+static const struct tty_port_operations rpmsg_tty_port_ops = {
+ .destruct = rpmsg_tty_destruct_port,
+};
+
static int rpmsg_tty_probe(struct rpmsg_device *rpdev)
{
@@ -166,7 +185,8 @@ static int rpmsg_tty_probe(struct rpmsg_device *rpdev)
cport->id, dev);
if (IS_ERR(tty_dev)) {
ret = dev_err_probe(dev, PTR_ERR(tty_dev), "Failed to register tty port\n");
- goto err_destroy;
+ tty_port_put(&cport->port);
+ return ret;
}
cport->rpdev = rpdev;
@@ -177,12 +197,6 @@ static int rpmsg_tty_probe(struct rpmsg_device *rpdev)
rpdev->src, rpdev->dst, cport->id);
return 0;
-
-err_destroy:
- tty_port_destroy(&cport->port);
- rpmsg_tty_release_cport(cport);
-
- return ret;
}
static void rpmsg_tty_remove(struct rpmsg_device *rpdev)
@@ -192,13 +206,11 @@ static void rpmsg_tty_remove(struct rpmsg_device *rpdev)
dev_dbg(&rpdev->dev, "Removing rpmsg tty device %d\n", cport->id);
/* User hang up to release the tty */
- if (tty_port_initialized(&cport->port))
- tty_port_tty_hangup(&cport->port, false);
+ tty_port_tty_hangup(&cport->port, false);
tty_unregister_device(rpmsg_tty_driver, cport->id);
- tty_port_destroy(&cport->port);
- rpmsg_tty_release_cport(cport);
+ tty_port_put(&cport->port);
}
static struct rpmsg_device_id rpmsg_driver_tty_id_table[] = {
diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index bce28729dd7b..be8626234627 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -83,8 +83,17 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
port->mapsize = resource_size(&resource);
/* Check for shifted address mapping */
- if (of_property_read_u32(np, "reg-offset", &prop) == 0)
+ if (of_property_read_u32(np, "reg-offset", &prop) == 0) {
+ if (prop >= port->mapsize) {
+ dev_warn(&ofdev->dev, "reg-offset %u exceeds region size %pa\n",
+ prop, &port->mapsize);
+ ret = -EINVAL;
+ goto err_unprepare;
+ }
+
port->mapbase += prop;
+ port->mapsize -= prop;
+ }
port->iotype = UPIO_MEM;
if (of_property_read_u32(np, "reg-io-width", &prop) == 0) {
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index e8b5469e9dfa..e17e97ea86fa 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -4779,8 +4779,30 @@ static const struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_INTASHIELD, PCI_DEVICE_ID_INTASHIELD_IS400,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, /* 135a.0dc0 */
pbn_b2_4_115200 },
+ /* Brainboxes Devices */
/*
- * BrainBoxes UC-260
+ * Brainboxes UC-101
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0BA1,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_2_115200 },
+ /*
+ * Brainboxes UC-235/246
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0AA1,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_1_115200 },
+ /*
+ * Brainboxes UC-257
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0861,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_2_115200 },
+ /*
+ * Brainboxes UC-260/271/701/756
*/
{ PCI_VENDOR_ID_INTASHIELD, 0x0D21,
PCI_ANY_ID, PCI_ANY_ID,
@@ -4788,7 +4810,81 @@ static const struct pci_device_id serial_pci_tbl[] = {
pbn_b2_4_115200 },
{ PCI_VENDOR_ID_INTASHIELD, 0x0E34,
PCI_ANY_ID, PCI_ANY_ID,
- PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
+ PCI_CLASS_COMMUNICATION_MULTISERIAL << 8, 0xffff00,
+ pbn_b2_4_115200 },
+ /*
+ * Brainboxes UC-268
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0841,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_4_115200 },
+ /*
+ * Brainboxes UC-275/279
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0881,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_8_115200 },
+ /*
+ * Brainboxes UC-302
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x08E1,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_2_115200 },
+ /*
+ * Brainboxes UC-310
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x08C1,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_2_115200 },
+ /*
+ * Brainboxes UC-313
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x08A3,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_2_115200 },
+ /*
+ * Brainboxes UC-320/324
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0A61,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_1_115200 },
+ /*
+ * Brainboxes UC-346
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0B02,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_4_115200 },
+ /*
+ * Brainboxes UC-357
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0A81,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_2_115200 },
+ { PCI_VENDOR_ID_INTASHIELD, 0x0A83,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_2_115200 },
+ /*
+ * Brainboxes UC-368
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0C41,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
+ pbn_b2_4_115200 },
+ /*
+ * Brainboxes UC-420/431
+ */
+ { PCI_VENDOR_ID_INTASHIELD, 0x0921,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0,
pbn_b2_4_115200 },
/*
* Perle PCI-RAS cards
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 2abb3de11a48..3b12bfc1ed67 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -2056,7 +2056,10 @@ static void serial8250_break_ctl(struct uart_port *port, int break_state)
serial8250_rpm_put(up);
}
-static void wait_for_lsr(struct uart_8250_port *up, int bits)
+/*
+ * Wait for transmitter & holding register to empty
+ */
+static void wait_for_xmitr(struct uart_8250_port *up, int bits)
{
unsigned int status, tmout = 10000;
@@ -2073,16 +2076,6 @@ static void wait_for_lsr(struct uart_8250_port *up, int bits)
udelay(1);
touch_nmi_watchdog();
}
-}
-
-/*
- * Wait for transmitter & holding register to empty
- */
-static void wait_for_xmitr(struct uart_8250_port *up, int bits)
-{
- unsigned int tmout;
-
- wait_for_lsr(up, bits);
/* Wait up to 1s for flow control if necessary */
if (up->port.flags & UPF_CONS_FLOW) {
@@ -3333,35 +3326,6 @@ static void serial8250_console_restore(struct uart_8250_port *up)
}
/*
- * Print a string to the serial port using the device FIFO
- *
- * It sends fifosize bytes and then waits for the fifo
- * to get empty.
- */
-static void serial8250_console_fifo_write(struct uart_8250_port *up,
- const char *s, unsigned int count)
-{
- int i;
- const char *end = s + count;
- unsigned int fifosize = up->port.fifosize;
- bool cr_sent = false;
-
- while (s != end) {
- wait_for_lsr(up, UART_LSR_THRE);
-
- for (i = 0; i < fifosize && s != end; ++i) {
- if (*s == '\n' && !cr_sent) {
- serial_out(up, UART_TX, '\r');
- cr_sent = true;
- } else {
- serial_out(up, UART_TX, *s++);
- cr_sent = false;
- }
- }
- }
-}
-
-/*
* Print a string to the serial port trying not to disturb
* any possible real use of the port...
*
@@ -3376,7 +3340,7 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
struct uart_8250_em485 *em485 = up->em485;
struct uart_port *port = &up->port;
unsigned long flags;
- unsigned int ier, use_fifo;
+ unsigned int ier;
int locked = 1;
touch_nmi_watchdog();
@@ -3408,20 +3372,7 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
mdelay(port->rs485.delay_rts_before_send);
}
- use_fifo = (up->capabilities & UART_CAP_FIFO) &&
- port->fifosize > 1 &&
- (serial_port_in(port, UART_FCR) & UART_FCR_ENABLE_FIFO) &&
- /*
- * After we put a data in the fifo, the controller will send
- * it regardless of the CTS state. Therefore, only use fifo
- * if we don't use control flow.
- */
- !(up->port.flags & UPF_CONS_FLOW);
-
- if (likely(use_fifo))
- serial8250_console_fifo_write(up, s, count);
- else
- uart_console_write(port, s, count, serial8250_console_putchar);
+ uart_console_write(port, s, count, serial8250_console_putchar);
/*
* Finally, wait for transmitter to become empty
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 1f1df46242f9..ba053a68529f 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1582,9 +1582,6 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl)
container_of(port, struct uart_amba_port, port);
unsigned int cr;
- if (port->rs485.flags & SER_RS485_ENABLED)
- mctrl &= ~TIOCM_RTS;
-
cr = pl011_read(uap, REG_CR);
#define TIOCMBIT(tiocmbit, uartbit) \
@@ -1808,14 +1805,8 @@ static int pl011_startup(struct uart_port *port)
cr &= UART011_CR_RTS | UART011_CR_DTR;
cr |= UART01x_CR_UARTEN | UART011_CR_RXE;
- if (port->rs485.flags & SER_RS485_ENABLED) {
- if (port->rs485.flags & SER_RS485_RTS_AFTER_SEND)
- cr &= ~UART011_CR_RTS;
- else
- cr |= UART011_CR_RTS;
- } else {
+ if (!(port->rs485.flags & SER_RS485_ENABLED))
cr |= UART011_CR_TXE;
- }
pl011_write(cr, uap, REG_CR);
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index dc40c4155356..0db90be4c3bc 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -144,6 +144,11 @@ uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear)
unsigned long flags;
unsigned int old;
+ if (port->rs485.flags & SER_RS485_ENABLED) {
+ set &= ~TIOCM_RTS;
+ clear &= ~TIOCM_RTS;
+ }
+
spin_lock_irqsave(&port->lock, flags);
old = port->mctrl;
port->mctrl = (old & ~clear) | set;
@@ -157,23 +162,10 @@ uart_update_mctrl(struct uart_port *port, unsigned int set, unsigned int clear)
static void uart_port_dtr_rts(struct uart_port *uport, int raise)
{
- int rs485_on = uport->rs485_config &&
- (uport->rs485.flags & SER_RS485_ENABLED);
- int RTS_after_send = !!(uport->rs485.flags & SER_RS485_RTS_AFTER_SEND);
-
- if (raise) {
- if (rs485_on && RTS_after_send) {
- uart_set_mctrl(uport, TIOCM_DTR);
- uart_clear_mctrl(uport, TIOCM_RTS);
- } else {
- uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
- }
- } else {
- unsigned int clear = TIOCM_DTR;
-
- clear |= (!rs485_on || RTS_after_send) ? TIOCM_RTS : 0;
- uart_clear_mctrl(uport, clear);
- }
+ if (raise)
+ uart_set_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
+ else
+ uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
}
/*
@@ -1075,11 +1067,6 @@ uart_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear)
goto out;
if (!tty_io_error(tty)) {
- if (uport->rs485.flags & SER_RS485_ENABLED) {
- set &= ~TIOCM_RTS;
- clear &= ~TIOCM_RTS;
- }
-
uart_update_mctrl(uport, set, clear);
ret = 0;
}
@@ -2390,6 +2377,9 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state,
*/
spin_lock_irqsave(&port->lock, flags);
port->mctrl &= TIOCM_DTR;
+ if (port->rs485.flags & SER_RS485_ENABLED &&
+ !(port->rs485.flags & SER_RS485_RTS_AFTER_SEND))
+ port->mctrl |= TIOCM_RTS;
port->ops->set_mctrl(port, port->mctrl);
spin_unlock_irqrestore(&port->lock, flags);
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 1f89ab0e49ac..9570002d07e7 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -550,11 +550,23 @@ static void stm32_usart_transmit_chars(struct uart_port *port)
struct stm32_port *stm32_port = to_stm32_port(port);
const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
struct circ_buf *xmit = &port->state->xmit;
+ u32 isr;
+ int ret;
if (port->x_char) {
if (stm32_usart_tx_dma_started(stm32_port) &&
stm32_usart_tx_dma_enabled(stm32_port))
stm32_usart_clr_bits(port, ofs->cr3, USART_CR3_DMAT);
+
+ /* Check that TDR is empty before filling FIFO */
+ ret =
+ readl_relaxed_poll_timeout_atomic(port->membase + ofs->isr,
+ isr,
+ (isr & USART_SR_TXE),
+ 10, 1000);
+ if (ret)
+ dev_warn(port->dev, "1 character may be erased\n");
+
writel_relaxed(port->x_char, port->membase + ofs->tdr);
port->x_char = 0;
port->icount.tx++;
@@ -730,7 +742,7 @@ static void stm32_usart_start_tx(struct uart_port *port)
struct serial_rs485 *rs485conf = &port->rs485;
struct circ_buf *xmit = &port->state->xmit;
- if (uart_circ_empty(xmit))
+ if (uart_circ_empty(xmit) && !port->x_char)
return;
if (rs485conf->flags & SER_RS485_ENABLED) {
diff --git a/include/uapi/linux/cyclades.h b/include/uapi/linux/cyclades.h
new file mode 100644
index 000000000000..6225c5aebe06
--- /dev/null
+++ b/include/uapi/linux/cyclades.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+
+#ifndef _UAPI_LINUX_CYCLADES_H
+#define _UAPI_LINUX_CYCLADES_H
+
+#warning "Support for features provided by this header has been removed"
+#warning "Please consider updating your code"
+
+struct cyclades_monitor {
+ unsigned long int_count;
+ unsigned long char_count;
+ unsigned long char_max;
+ unsigned long char_last;
+};
+
+#define CYGETMON 0x435901
+#define CYGETTHRESH 0x435902
+#define CYSETTHRESH 0x435903
+#define CYGETDEFTHRESH 0x435904
+#define CYSETDEFTHRESH 0x435905
+#define CYGETTIMEOUT 0x435906
+#define CYSETTIMEOUT 0x435907
+#define CYGETDEFTIMEOUT 0x435908
+#define CYSETDEFTIMEOUT 0x435909
+#define CYSETRFLOW 0x43590a
+#define CYGETRFLOW 0x43590b
+#define CYSETRTSDTR_INV 0x43590c
+#define CYGETRTSDTR_INV 0x43590d
+#define CYZSETPOLLCYCLE 0x43590e
+#define CYZGETPOLLCYCLE 0x43590f
+#define CYGETCD1400VER 0x435910
+#define CYSETWAIT 0x435912
+#define CYGETWAIT 0x435913
+
+#endif /* _UAPI_LINUX_CYCLADES_H */
diff --git a/usr/include/Makefile b/usr/include/Makefile
index 7be7468c177b..83822c33e9e7 100644
--- a/usr/include/Makefile
+++ b/usr/include/Makefile
@@ -28,6 +28,7 @@ no-header-test += linux/am437x-vpfe.h
no-header-test += linux/android/binder.h
no-header-test += linux/android/binderfs.h
no-header-test += linux/coda.h
+no-header-test += linux/cyclades.h
no-header-test += linux/errqueue.h
no-header-test += linux/fsmap.h
no-header-test += linux/hdlc/ioctl.h
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-29 05:46:42 +0000