From 1c055e55a242a33e574e48be530e06770a210dcd Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 19 Feb 2024 03:26:26 +0000
Subject: [PATCH] add r8169 read mac form eeprom
---
kernel/drivers/usb/serial/pl2303.c | 219 +++++++++++++++++++++++++++++++++++++++++-------------
1 files changed, 166 insertions(+), 53 deletions(-)
diff --git a/kernel/drivers/usb/serial/pl2303.c b/kernel/drivers/usb/serial/pl2303.c
index 7df0fbe..16118d9 100644
--- a/kernel/drivers/usb/serial/pl2303.c
+++ b/kernel/drivers/usb/serial/pl2303.c
@@ -7,7 +7,7 @@
*
* Original driver for 2.2.x by anonymous
*
- * See Documentation/usb/usb-serial.txt for more information on using this
+ * See Documentation/usb/usb-serial.rst for more information on using this
* driver
*/
@@ -47,6 +47,12 @@
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) },
{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_TB) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GC) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GB) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GT) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GL) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GE) },
+ { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GS) },
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID),
@@ -100,6 +106,7 @@
{ USB_DEVICE(HP_VENDOR_ID, HP_LCM220_PRODUCT_ID) },
{ USB_DEVICE(HP_VENDOR_ID, HP_LCM960_PRODUCT_ID) },
{ USB_DEVICE(HP_VENDOR_ID, HP_LM920_PRODUCT_ID) },
+ { USB_DEVICE(HP_VENDOR_ID, HP_LM930_PRODUCT_ID) },
{ USB_DEVICE(HP_VENDOR_ID, HP_LM940_PRODUCT_ID) },
{ USB_DEVICE(HP_VENDOR_ID, HP_TD620_PRODUCT_ID) },
{ USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
@@ -110,6 +117,7 @@
{ USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530GC_PRODUCT_ID) },
{ USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) },
{ USB_DEVICE(AT_VENDOR_ID, AT_VTKIT3_PRODUCT_ID) },
+ { USB_DEVICE(IBM_VENDOR_ID, IBM_PRODUCT_ID) },
{ } /* Terminating entry */
};
@@ -133,9 +141,11 @@
#define VENDOR_WRITE_REQUEST_TYPE 0x40
#define VENDOR_WRITE_REQUEST 0x01
+#define VENDOR_WRITE_NREQUEST 0x80
#define VENDOR_READ_REQUEST_TYPE 0xc0
#define VENDOR_READ_REQUEST 0x01
+#define VENDOR_READ_NREQUEST 0x81
#define UART_STATE_INDEX 8
#define UART_STATE_MSR_MASK 0x8b
@@ -149,17 +159,34 @@
#define UART_OVERRUN_ERROR 0x40
#define UART_CTS 0x80
+#define PL2303_FLOWCTRL_MASK 0xf0
+
+#define PL2303_READ_TYPE_HX_STATUS 0x8080
+
+#define PL2303_HXN_RESET_REG 0x07
+#define PL2303_HXN_RESET_UPSTREAM_PIPE 0x02
+#define PL2303_HXN_RESET_DOWNSTREAM_PIPE 0x01
+
+#define PL2303_HXN_FLOWCTRL_REG 0x0a
+#define PL2303_HXN_FLOWCTRL_MASK 0x1c
+#define PL2303_HXN_FLOWCTRL_NONE 0x1c
+#define PL2303_HXN_FLOWCTRL_RTS_CTS 0x18
+#define PL2303_HXN_FLOWCTRL_XON_XOFF 0x0c
+
static void pl2303_set_break(struct usb_serial_port *port, bool enable);
enum pl2303_type {
TYPE_01, /* Type 0 and 1 (difference unknown) */
TYPE_HX, /* HX version of the pl2303 chip */
+ TYPE_HXN, /* HXN version of the pl2303 chip */
TYPE_COUNT
};
struct pl2303_type_data {
speed_t max_baud_rate;
unsigned long quirks;
+ unsigned int no_autoxonxoff:1;
+ unsigned int no_divisors:1;
};
struct pl2303_serial_private {
@@ -177,22 +204,34 @@
static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = {
[TYPE_01] = {
- .max_baud_rate = 1228800,
- .quirks = PL2303_QUIRK_LEGACY,
+ .max_baud_rate = 1228800,
+ .quirks = PL2303_QUIRK_LEGACY,
+ .no_autoxonxoff = true,
},
[TYPE_HX] = {
- .max_baud_rate = 12000000,
+ .max_baud_rate = 12000000,
+ },
+ [TYPE_HXN] = {
+ .max_baud_rate = 12000000,
+ .no_divisors = true,
},
};
static int pl2303_vendor_read(struct usb_serial *serial, u16 value,
unsigned char buf[1])
{
+ struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
struct device *dev = &serial->interface->dev;
+ u8 request;
int res;
+ if (spriv->type == &pl2303_type_data[TYPE_HXN])
+ request = VENDOR_READ_NREQUEST;
+ else
+ request = VENDOR_READ_REQUEST;
+
res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
+ request, VENDOR_READ_REQUEST_TYPE,
value, 0, buf, 1, 100);
if (res != 1) {
dev_err(dev, "%s - failed to read [%04x]: %d\n", __func__,
@@ -210,13 +249,20 @@
static int pl2303_vendor_write(struct usb_serial *serial, u16 value, u16 index)
{
+ struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
struct device *dev = &serial->interface->dev;
+ u8 request;
int res;
dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, index);
+ if (spriv->type == &pl2303_type_data[TYPE_HXN])
+ request = VENDOR_WRITE_NREQUEST;
+ else
+ request = VENDOR_WRITE_REQUEST;
+
res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
+ request, VENDOR_WRITE_REQUEST_TYPE,
value, index, NULL, 0, 100);
if (res) {
dev_err(dev, "%s - failed to write [%04x]: %d\n", __func__,
@@ -225,6 +271,34 @@
}
return 0;
+}
+
+static int pl2303_update_reg(struct usb_serial *serial, u8 reg, u8 mask, u8 val)
+{
+ struct pl2303_serial_private *spriv = usb_get_serial_data(serial);
+ int ret = 0;
+ u8 *buf;
+
+ buf = kmalloc(1, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ if (spriv->type == &pl2303_type_data[TYPE_HXN])
+ ret = pl2303_vendor_read(serial, reg, buf);
+ else
+ ret = pl2303_vendor_read(serial, reg | 0x80, buf);
+
+ if (ret)
+ goto out_free;
+
+ *buf &= ~mask;
+ *buf |= val & mask;
+
+ ret = pl2303_vendor_write(serial, reg, *buf);
+out_free:
+ kfree(buf);
+
+ return ret;
}
static int pl2303_probe(struct usb_serial *serial,
@@ -296,6 +370,7 @@
struct pl2303_serial_private *spriv;
enum pl2303_type type = TYPE_01;
unsigned char *buf;
+ int res;
spriv = kzalloc(sizeof(*spriv), GFP_KERNEL);
if (!spriv)
@@ -317,26 +392,37 @@
type = TYPE_01; /* type 1 */
dev_dbg(&serial->interface->dev, "device type: %d\n", type);
+ if (type == TYPE_HX) {
+ res = usb_control_msg(serial->dev,
+ usb_rcvctrlpipe(serial->dev, 0),
+ VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
+ PL2303_READ_TYPE_HX_STATUS, 0, buf, 1, 100);
+ if (res != 1)
+ type = TYPE_HXN;
+ }
+
spriv->type = &pl2303_type_data[type];
spriv->quirks = (unsigned long)usb_get_serial_data(serial);
spriv->quirks |= spriv->type->quirks;
usb_set_serial_data(serial, spriv);
- pl2303_vendor_read(serial, 0x8484, buf);
- pl2303_vendor_write(serial, 0x0404, 0);
- pl2303_vendor_read(serial, 0x8484, buf);
- pl2303_vendor_read(serial, 0x8383, buf);
- pl2303_vendor_read(serial, 0x8484, buf);
- pl2303_vendor_write(serial, 0x0404, 1);
- pl2303_vendor_read(serial, 0x8484, buf);
- pl2303_vendor_read(serial, 0x8383, buf);
- pl2303_vendor_write(serial, 0, 1);
- pl2303_vendor_write(serial, 1, 0);
- if (spriv->quirks & PL2303_QUIRK_LEGACY)
- pl2303_vendor_write(serial, 2, 0x24);
- else
- pl2303_vendor_write(serial, 2, 0x44);
+ if (type != TYPE_HXN) {
+ pl2303_vendor_read(serial, 0x8484, buf);
+ pl2303_vendor_write(serial, 0x0404, 0);
+ pl2303_vendor_read(serial, 0x8484, buf);
+ pl2303_vendor_read(serial, 0x8383, buf);
+ pl2303_vendor_read(serial, 0x8484, buf);
+ pl2303_vendor_write(serial, 0x0404, 1);
+ pl2303_vendor_read(serial, 0x8484, buf);
+ pl2303_vendor_read(serial, 0x8383, buf);
+ pl2303_vendor_write(serial, 0, 1);
+ pl2303_vendor_write(serial, 1, 0);
+ if (spriv->quirks & PL2303_QUIRK_LEGACY)
+ pl2303_vendor_write(serial, 2, 0x24);
+ else
+ pl2303_vendor_write(serial, 2, 0x44);
+ }
kfree(buf);
@@ -490,8 +576,12 @@
baud = min_t(speed_t, baud, spriv->type->max_baud_rate);
/*
* Use direct method for supported baud rates, otherwise use divisors.
+ * Newer chip types do not support divisor encoding.
*/
- baud_sup = pl2303_get_supported_baud_rate(baud);
+ if (spriv->type->no_divisors)
+ baud_sup = baud;
+ else
+ baud_sup = pl2303_get_supported_baud_rate(baud);
if (baud == baud_sup)
baud = pl2303_encode_baud_rate_direct(buf, baud);
@@ -554,6 +644,20 @@
a->c_cc[VSTOP] != b->c_cc[VSTOP];
return tty_termios_hw_change(a, b) || ixon_change;
+}
+
+static bool pl2303_enable_xonxoff(struct tty_struct *tty, const struct pl2303_type_data *type)
+{
+ if (!I_IXON(tty) || I_IXANY(tty))
+ return false;
+
+ if (START_CHAR(tty) != 0x11 || STOP_CHAR(tty) != 0x13)
+ return false;
+
+ if (type->no_autoxonxoff)
+ return false;
+
+ return true;
}
static void pl2303_set_termios(struct tty_struct *tty,
@@ -681,15 +785,31 @@
}
if (C_CRTSCTS(tty)) {
- if (spriv->quirks & PL2303_QUIRK_LEGACY)
- pl2303_vendor_write(serial, 0x0, 0x41);
- else
- pl2303_vendor_write(serial, 0x0, 0x61);
- } else if (I_IXON(tty) && !I_IXANY(tty) && START_CHAR(tty) == 0x11 &&
- STOP_CHAR(tty) == 0x13) {
- pl2303_vendor_write(serial, 0x0, 0xc0);
+ if (spriv->quirks & PL2303_QUIRK_LEGACY) {
+ pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x40);
+ } else if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
+ pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
+ PL2303_HXN_FLOWCTRL_MASK,
+ PL2303_HXN_FLOWCTRL_RTS_CTS);
+ } else {
+ pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x60);
+ }
+ } else if (pl2303_enable_xonxoff(tty, spriv->type)) {
+ if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
+ pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
+ PL2303_HXN_FLOWCTRL_MASK,
+ PL2303_HXN_FLOWCTRL_XON_XOFF);
+ } else {
+ pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0xc0);
+ }
} else {
- pl2303_vendor_write(serial, 0x0, 0x0);
+ if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
+ pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
+ PL2303_HXN_FLOWCTRL_MASK,
+ PL2303_HXN_FLOWCTRL_NONE);
+ } else {
+ pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0);
+ }
}
kfree(buf);
@@ -730,8 +850,14 @@
usb_clear_halt(serial->dev, port->read_urb->pipe);
} else {
/* reset upstream data pipes */
- pl2303_vendor_write(serial, 8, 0);
- pl2303_vendor_write(serial, 9, 0);
+ if (spriv->type == &pl2303_type_data[TYPE_HXN]) {
+ pl2303_vendor_write(serial, PL2303_HXN_RESET_REG,
+ PL2303_HXN_RESET_UPSTREAM_PIPE |
+ PL2303_HXN_RESET_DOWNSTREAM_PIPE);
+ } else {
+ pl2303_vendor_write(serial, 8, 0);
+ pl2303_vendor_write(serial, 9, 0);
+ }
}
/* Setup termios */
@@ -818,29 +944,16 @@
return 0;
}
-static int pl2303_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
+static int pl2303_get_serial(struct tty_struct *tty,
+ struct serial_struct *ss)
{
- struct serial_struct ser;
struct usb_serial_port *port = tty->driver_data;
- switch (cmd) {
- case TIOCGSERIAL:
- memset(&ser, 0, sizeof ser);
- ser.type = PORT_16654;
- ser.line = port->minor;
- ser.port = port->port_number;
- ser.baud_base = 460800;
-
- if (copy_to_user((void __user *)arg, &ser, sizeof ser))
- return -EFAULT;
-
- return 0;
- default:
- break;
- }
-
- return -ENOIOCTLCMD;
+ ss->type = PORT_16654;
+ ss->line = port->minor;
+ ss->port = port->port_number;
+ ss->baud_base = 460800;
+ return 0;
}
static void pl2303_set_break(struct usb_serial_port *port, bool enable)
@@ -998,7 +1111,7 @@
if (line_status & UART_OVERRUN_ERROR)
tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
- if (port->port.console && port->sysrq) {
+ if (port->sysrq) {
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(port, data[i]))
tty_insert_flip_char(&port->port, data[i],
@@ -1026,7 +1139,7 @@
.close = pl2303_close,
.dtr_rts = pl2303_dtr_rts,
.carrier_raised = pl2303_carrier_raised,
- .ioctl = pl2303_ioctl,
+ .get_serial = pl2303_get_serial,
.break_ctl = pl2303_break_ctl,
.set_termios = pl2303_set_termios,
.tiocmget = pl2303_tiocmget,
--
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