blob: 6d1d6efa30554d81a8a640fa171804535c877554 [file] [log] [blame]
Greg Kroah-Hartman5fd54ac2017-11-03 11:28:30 +01001// SPDX-License-Identifier: GPL-2.0+
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/*
3 * Edgeport USB Serial Converter driver
4 *
5 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
7 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 * Supports the following devices:
9 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
10 *
11 * For questions or problems with this driver, contact Inside Out
12 * Networks technical support, or Peter Berger <pberger@brimson.com>,
13 * or Al Borchers <alborchers@steinerpoint.com>.
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 */
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/kernel.h>
17#include <linux/jiffies.h>
18#include <linux/errno.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070019#include <linux/slab.h>
20#include <linux/tty.h>
21#include <linux/tty_driver.h>
22#include <linux/tty_flip.h>
23#include <linux/module.h>
24#include <linux/spinlock.h>
Matthias Kaehlcke241ca642007-12-04 16:15:40 +010025#include <linux/mutex.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <linux/serial.h>
Johan Hovold55090762014-04-25 15:23:03 +020027#include <linux/swab.h>
Johan Hovoldd733cec2010-05-19 00:01:37 +020028#include <linux/kfifo.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/ioctl.h>
Jaswinder Singhd12b2192008-07-04 23:06:09 +053030#include <linux/firmware.h>
Alan Cox2742fd82008-04-29 14:45:15 +010031#include <linux/uaccess.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032#include <linux/usb.h>
Greg Kroah-Hartmana9698882006-07-11 21:22:58 -070033#include <linux/usb/serial.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070034
Linus Torvalds1da177e2005-04-16 15:20:36 -070035#include "io_16654.h"
36#include "io_usbvend.h"
37#include "io_ti.h"
38
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
40#define DRIVER_DESC "Edgeport USB Serial Driver"
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#define EPROM_PAGE_SIZE 64
43
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045/* different hardware types */
46#define HARDWARE_TYPE_930 0
47#define HARDWARE_TYPE_TIUMP 1
48
Alan Cox2742fd82008-04-29 14:45:15 +010049/* IOCTL_PRIVATE_TI_GET_MODE Definitions */
50#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */
51#define TI_MODE_BOOT 1 /* Staying in boot mode */
52#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */
Peter E. Berger75899512015-09-16 03:13:02 -050053#define TI_MODE_TRANSITIONING 3 /*
54 * Currently in boot mode but
55 * transitioning to download mode
56 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070057
58/* read urb state */
59#define EDGE_READ_URB_RUNNING 0
60#define EDGE_READ_URB_STOPPING 1
61#define EDGE_READ_URB_STOPPED 2
62
Linus Torvalds1da177e2005-04-16 15:20:36 -070063#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */
64
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66/* Product information read from the Edgeport */
Alan Cox2742fd82008-04-29 14:45:15 +010067struct product_info {
68 int TiMode; /* Current TI Mode */
69 __u8 hardware_type; /* Type of hardware */
Linus Torvalds1da177e2005-04-16 15:20:36 -070070} __attribute__((packed));
71
Peter E. Bergerc0e34832015-07-31 01:55:06 -050072/*
73 * Edgeport firmware header
74 *
75 * "build_number" has been set to 0 in all three of the images I have
76 * seen, and Digi Tech Support suggests that it is safe to ignore it.
77 *
78 * "length" is the number of bytes of actual data following the header.
79 *
80 * "checksum" is the low order byte resulting from adding the values of
81 * all the data bytes.
82 */
83struct edgeport_fw_hdr {
84 u8 major_version;
85 u8 minor_version;
86 __le16 build_number;
87 __le16 length;
88 u8 checksum;
89} __packed;
90
Linus Torvalds1da177e2005-04-16 15:20:36 -070091struct edgeport_port {
92 __u16 uart_base;
93 __u16 dma_address;
94 __u8 shadow_msr;
95 __u8 shadow_mcr;
96 __u8 shadow_lsr;
97 __u8 lsr_mask;
Peter E. Berger75899512015-09-16 03:13:02 -050098 __u32 ump_read_timeout; /*
99 * Number of milliseconds the UMP will
100 * wait without data before completing
101 * a read short
102 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103 int baud_rate;
104 int close_pending;
105 int lsr_event;
Johan Hovold48ee5802013-03-21 12:37:10 +0100106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 struct edgeport_serial *edge_serial;
108 struct usb_serial_port *port;
Alan Cox2742fd82008-04-29 14:45:15 +0100109 __u8 bUartMode; /* Port type, 0: RS232, etc. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 spinlock_t ep_lock;
111 int ep_read_urb_state;
112 int ep_write_urb_in_use;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113};
114
115struct edgeport_serial {
116 struct product_info product_info;
Alan Cox2742fd82008-04-29 14:45:15 +0100117 u8 TI_I2C_Type; /* Type of I2C in UMP */
Peter E. Berger75899512015-09-16 03:13:02 -0500118 u8 TiReadI2C; /*
119 * Set to TRUE if we have read the
120 * I2c in Boot Mode
121 */
Matthias Kaehlcke241ca642007-12-04 16:15:40 +0100122 struct mutex es_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123 int num_ports_open;
124 struct usb_serial *serial;
Peter E. Berger26c78da2015-07-31 01:55:08 -0500125 struct delayed_work heartbeat_work;
Peter E. Bergerc0e34832015-07-31 01:55:06 -0500126 int fw_version;
Peter E. Berger26c78da2015-07-31 01:55:08 -0500127 bool use_heartbeat;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128};
129
130
131/* Devices that this driver supports */
Németh Márton7d40d7e2010-01-10 15:34:24 +0100132static const struct usb_device_id edgeport_1port_id_table[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
149 { }
150};
151
Németh Márton7d40d7e2010-01-10 15:34:24 +0100152static const struct usb_device_id edgeport_2port_id_table[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -0400165 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -0400167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 { }
172};
173
174/* Devices that this driver supports */
Németh Márton7d40d7e2010-01-10 15:34:24 +0100175static const struct usb_device_id id_table_combined[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -0400205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 { }
210};
211
Alan Cox2742fd82008-04-29 14:45:15 +0100212MODULE_DEVICE_TABLE(usb, id_table_combined);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214static int closing_wait = EDGE_CLOSING_WAIT;
Rusty Russell90ab5ee2012-01-13 09:32:20 +1030215static bool ignore_cpu_rev;
Alan Cox2742fd82008-04-29 14:45:15 +0100216static int default_uart_mode; /* RS232 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
Jiri Slaby2e124b42013-01-03 15:53:06 +0100218static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
219 int length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220
221static void stop_read(struct edgeport_port *edge_port);
222static int restart_read(struct edgeport_port *edge_port);
223
Alan Cox95da3102008-07-22 11:09:07 +0100224static void edge_set_termios(struct tty_struct *tty,
225 struct usb_serial_port *port, struct ktermios *old_termios);
Jiri Slabyae3759c2013-04-04 22:41:01 +0200226static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227
Peter E. Bergerbebf1f12015-09-16 03:13:00 -0500228static int do_download_mode(struct edgeport_serial *serial,
229 const struct firmware *fw);
230static int do_boot_mode(struct edgeport_serial *serial,
231 const struct firmware *fw);
232
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -0400233/* sysfs attributes */
234static int edge_create_sysfs_attrs(struct usb_serial_port *port);
235static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
236
Peter E. Berger26c78da2015-07-31 01:55:08 -0500237/*
238 * Some release of Edgeport firmware "down3.bin" after version 4.80
239 * introduced code to automatically disconnect idle devices on some
240 * Edgeport models after periods of inactivity, typically ~60 seconds.
241 * This occurs without regard to whether ports on the device are open
242 * or not. Digi International Tech Support suggested:
243 *
244 * 1. Adding driver "heartbeat" code to reset the firmware timer by
245 * requesting a descriptor record every 15 seconds, which should be
246 * effective with newer firmware versions that require it, and benign
247 * with older versions that do not. In practice 40 seconds seems often
248 * enough.
249 * 2. The heartbeat code is currently required only on Edgeport/416 models.
250 */
251#define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80)
252#define FW_HEARTBEAT_SECS 40
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -0500254/* Timeouts in msecs: firmware downloads take longer */
255#define TI_VSEND_TIMEOUT_DEFAULT 1000
256#define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000
257
Alan Cox2742fd82008-04-29 14:45:15 +0100258static int ti_vread_sync(struct usb_device *dev, __u8 request,
259 __u16 value, __u16 index, u8 *data, int size)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260{
261 int status;
262
Alan Cox2742fd82008-04-29 14:45:15 +0100263 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
264 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
265 value, index, data, size, 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 if (status < 0)
267 return status;
268 if (status != size) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700269 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
270 __func__, size, status);
Alan Cox2742fd82008-04-29 14:45:15 +0100271 return -ECOMM;
272 }
273 return 0;
274}
275
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -0500276static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value,
277 u16 index, u8 *data, int size, int timeout)
Alan Cox2742fd82008-04-29 14:45:15 +0100278{
279 int status;
280
281 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
282 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -0500283 value, index, data, size, timeout);
Alan Cox2742fd82008-04-29 14:45:15 +0100284 if (status < 0)
285 return status;
286 if (status != size) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700287 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
288 __func__, size, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 return -ECOMM;
290 }
291 return 0;
292}
293
Alan Cox2742fd82008-04-29 14:45:15 +0100294static int send_cmd(struct usb_device *dev, __u8 command,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 __u8 moduleid, __u16 value, u8 *data,
296 int size)
297{
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -0500298 return ti_vsend_sync(dev, command, value, moduleid, data, size,
299 TI_VSEND_TIMEOUT_DEFAULT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300}
301
302/* clear tx/rx buffers and fifo in TI UMP */
Alan Cox2742fd82008-04-29 14:45:15 +0100303static int purge_port(struct usb_serial_port *port, __u16 mask)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304{
Greg Kroah-Hartman11438322013-06-06 10:32:00 -0700305 int port_number = port->port_number;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700307 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308
Alan Cox2742fd82008-04-29 14:45:15 +0100309 return send_cmd(port->serial->dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 UMPC_PURGE_PORT,
311 (__u8)(UMPM_UART1_PORT + port_number),
312 mask,
313 NULL,
314 0);
315}
316
317/**
Alan Cox2742fd82008-04-29 14:45:15 +0100318 * read_download_mem - Read edgeport memory from TI chip
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 * @dev: usb device pointer
320 * @start_address: Device CPU address at which to read
321 * @length: Length of above data
322 * @address_type: Can read both XDATA and I2C
323 * @buffer: pointer to input data buffer
324 */
Alan Cox2742fd82008-04-29 14:45:15 +0100325static int read_download_mem(struct usb_device *dev, int start_address,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 int length, __u8 address_type, __u8 *buffer)
327{
328 int status = 0;
329 __u8 read_length;
Johan Hovold55090762014-04-25 15:23:03 +0200330 u16 be_start_address;
Alan Cox2742fd82008-04-29 14:45:15 +0100331
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700332 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333
Peter E. Berger75899512015-09-16 03:13:02 -0500334 /*
335 * Read in blocks of 64 bytes
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 * (TI firmware can't handle more than 64 byte reads)
337 */
338 while (length) {
339 if (length > 64)
Alan Cox2742fd82008-04-29 14:45:15 +0100340 read_length = 64;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 else
342 read_length = (__u8)length;
343
344 if (read_length > 1) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700345 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 }
Johan Hovold55090762014-04-25 15:23:03 +0200347 /*
348 * NOTE: Must use swab as wIndex is sent in little-endian
349 * byte order regardless of host byte order.
350 */
351 be_start_address = swab16((u16)start_address);
Alan Cox2742fd82008-04-29 14:45:15 +0100352 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
353 (__u16)address_type,
Johan Hovold55090762014-04-25 15:23:03 +0200354 be_start_address,
Alan Cox2742fd82008-04-29 14:45:15 +0100355 buffer, read_length);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
357 if (status) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700358 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 return status;
360 }
361
Alan Cox2742fd82008-04-29 14:45:15 +0100362 if (read_length > 1)
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100363 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364
365 /* Update pointers/length */
366 start_address += read_length;
367 buffer += read_length;
368 length -= read_length;
369 }
Alan Cox2742fd82008-04-29 14:45:15 +0100370
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 return status;
372}
373
Alan Cox2742fd82008-04-29 14:45:15 +0100374static int read_ram(struct usb_device *dev, int start_address,
375 int length, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376{
Alan Cox2742fd82008-04-29 14:45:15 +0100377 return read_download_mem(dev, start_address, length,
378 DTK_ADDR_SPACE_XDATA, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379}
380
381/* Read edgeport memory to a given block */
Alan Cox2742fd82008-04-29 14:45:15 +0100382static int read_boot_mem(struct edgeport_serial *serial,
383 int start_address, int length, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384{
385 int status = 0;
386 int i;
387
Alan Cox2742fd82008-04-29 14:45:15 +0100388 for (i = 0; i < length; i++) {
389 status = ti_vread_sync(serial->serial->dev,
390 UMPC_MEMORY_READ, serial->TI_I2C_Type,
391 (__u16)(start_address+i), &buffer[i], 0x01);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 if (status) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700393 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 return status;
395 }
396 }
397
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700398 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
399 __func__, start_address, length);
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100400 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401
402 serial->TiReadI2C = 1;
403
404 return status;
405}
406
407/* Write given block to TI EPROM memory */
Alan Cox2742fd82008-04-29 14:45:15 +0100408static int write_boot_mem(struct edgeport_serial *serial,
409 int start_address, int length, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410{
411 int status = 0;
412 int i;
Johan Hovolde9305d22009-12-28 23:01:50 +0100413 u8 *temp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414
415 /* Must do a read before write */
416 if (!serial->TiReadI2C) {
Johan Hovolde9305d22009-12-28 23:01:50 +0100417 temp = kmalloc(1, GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100418 if (!temp)
Johan Hovolde9305d22009-12-28 23:01:50 +0100419 return -ENOMEM;
Johan Hovold10c642d2013-12-29 19:22:56 +0100420
Johan Hovolde9305d22009-12-28 23:01:50 +0100421 status = read_boot_mem(serial, 0, 1, temp);
422 kfree(temp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 if (status)
424 return status;
425 }
426
Alan Cox2742fd82008-04-29 14:45:15 +0100427 for (i = 0; i < length; ++i) {
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -0500428 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
429 buffer[i], (u16)(i + start_address), NULL,
430 0, TI_VSEND_TIMEOUT_DEFAULT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 if (status)
432 return status;
433 }
434
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700435 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100436 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
438 return status;
439}
440
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441/* Write edgeport I2C memory to TI chip */
Alan Cox2742fd82008-04-29 14:45:15 +0100442static int write_i2c_mem(struct edgeport_serial *serial,
443 int start_address, int length, __u8 address_type, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444{
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700445 struct device *dev = &serial->serial->dev->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 int status = 0;
447 int write_length;
Johan Hovold55090762014-04-25 15:23:03 +0200448 u16 be_start_address;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449
450 /* We can only send a maximum of 1 aligned byte page at a time */
Alan Cox2742fd82008-04-29 14:45:15 +0100451
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300452 /* calculate the number of bytes left in the first page */
Alan Cox2742fd82008-04-29 14:45:15 +0100453 write_length = EPROM_PAGE_SIZE -
454 (start_address & (EPROM_PAGE_SIZE - 1));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
456 if (write_length > length)
457 write_length = length;
458
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700459 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
460 __func__, start_address, write_length);
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100461 usb_serial_debug_data(dev, __func__, write_length, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462
Johan Hovold55090762014-04-25 15:23:03 +0200463 /*
464 * Write first page.
465 *
466 * NOTE: Must use swab as wIndex is sent in little-endian byte order
467 * regardless of host byte order.
468 */
469 be_start_address = swab16((u16)start_address);
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -0500470 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
471 (u16)address_type, be_start_address,
472 buffer, write_length, TI_VSEND_TIMEOUT_DEFAULT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 if (status) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700474 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 return status;
476 }
477
478 length -= write_length;
479 start_address += write_length;
480 buffer += write_length;
481
Peter E. Berger75899512015-09-16 03:13:02 -0500482 /*
483 * We should be aligned now -- can write max page size bytes at a
484 * time.
485 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 while (length) {
487 if (length > EPROM_PAGE_SIZE)
488 write_length = EPROM_PAGE_SIZE;
489 else
490 write_length = length;
491
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700492 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
493 __func__, start_address, write_length);
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +0100494 usb_serial_debug_data(dev, __func__, write_length, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700495
Johan Hovold55090762014-04-25 15:23:03 +0200496 /*
497 * Write next page.
498 *
499 * NOTE: Must use swab as wIndex is sent in little-endian byte
500 * order regardless of host byte order.
501 */
502 be_start_address = swab16((u16)start_address);
Alan Cox2742fd82008-04-29 14:45:15 +0100503 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -0500504 (u16)address_type, be_start_address, buffer,
505 write_length, TI_VSEND_TIMEOUT_DEFAULT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 if (status) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700507 dev_err(dev, "%s - ERROR %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508 return status;
509 }
Alan Cox2742fd82008-04-29 14:45:15 +0100510
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511 length -= write_length;
512 start_address += write_length;
513 buffer += write_length;
514 }
515 return status;
516}
517
Peter E. Berger75899512015-09-16 03:13:02 -0500518/*
519 * Examine the UMP DMA registers and LSR
Alan Cox2742fd82008-04-29 14:45:15 +0100520 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 * Check the MSBit of the X and Y DMA byte count registers.
522 * A zero in this bit indicates that the TX DMA buffers are empty
523 * then check the TX Empty bit in the UART.
524 */
Alan Cox2742fd82008-04-29 14:45:15 +0100525static int tx_active(struct edgeport_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526{
527 int status;
528 struct out_endpoint_desc_block *oedb;
529 __u8 *lsr;
530 int bytes_left = 0;
531
Alan Cox2742fd82008-04-29 14:45:15 +0100532 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100533 if (!oedb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535
Peter E. Berger75899512015-09-16 03:13:02 -0500536 /*
537 * Sigh, that's right, just one byte, as not all platforms can
538 * do DMA from stack
539 */
540 lsr = kmalloc(1, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 if (!lsr) {
542 kfree(oedb);
543 return -ENOMEM;
544 }
545 /* Read the DMA Count Registers */
Alan Cox2742fd82008-04-29 14:45:15 +0100546 status = read_ram(port->port->serial->dev, port->dma_address,
547 sizeof(*oedb), (void *)oedb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700548 if (status)
549 goto exit_is_tx_active;
550
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700551 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552
553 /* and the LSR */
Alan Cox2742fd82008-04-29 14:45:15 +0100554 status = read_ram(port->port->serial->dev,
555 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556
557 if (status)
558 goto exit_is_tx_active;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700559 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
Alan Cox2742fd82008-04-29 14:45:15 +0100560
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 /* If either buffer has data or we are transmitting then return TRUE */
Alan Cox2742fd82008-04-29 14:45:15 +0100562 if ((oedb->XByteCount & 0x80) != 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 bytes_left += 64;
564
Alan Cox2742fd82008-04-29 14:45:15 +0100565 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 bytes_left += 1;
567
568 /* We return Not Active if we get any kind of error */
569exit_is_tx_active:
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700570 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571
572 kfree(lsr);
573 kfree(oedb);
574 return bytes_left;
575}
576
Alan Cox2742fd82008-04-29 14:45:15 +0100577static int choose_config(struct usb_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578{
Alan Cox2742fd82008-04-29 14:45:15 +0100579 /*
580 * There may be multiple configurations on this device, in which case
581 * we would need to read and parse all of them to find out which one
582 * we want. However, we just support one config at this point,
583 * configuration # 1, which is Config Descriptor 0.
584 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700586 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
587 __func__, dev->config->desc.bNumInterfaces);
588 dev_dbg(&dev->dev, "%s - MAX Power = %d\n",
589 __func__, dev->config->desc.bMaxPower * 2);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590
591 if (dev->config->desc.bNumInterfaces != 1) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700592 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700593 return -ENODEV;
594 }
595
596 return 0;
597}
598
Alan Cox2742fd82008-04-29 14:45:15 +0100599static int read_rom(struct edgeport_serial *serial,
600 int start_address, int length, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601{
602 int status;
603
604 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
Alan Cox2742fd82008-04-29 14:45:15 +0100605 status = read_download_mem(serial->serial->dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606 start_address,
607 length,
608 serial->TI_I2C_Type,
609 buffer);
610 } else {
Alan Cox2742fd82008-04-29 14:45:15 +0100611 status = read_boot_mem(serial, start_address, length,
612 buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614 return status;
615}
616
Alan Cox2742fd82008-04-29 14:45:15 +0100617static int write_rom(struct edgeport_serial *serial, int start_address,
618 int length, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619{
620 if (serial->product_info.TiMode == TI_MODE_BOOT)
Alan Cox2742fd82008-04-29 14:45:15 +0100621 return write_boot_mem(serial, start_address, length,
622 buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623
624 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
Alan Cox2742fd82008-04-29 14:45:15 +0100625 return write_i2c_mem(serial, start_address, length,
626 serial->TI_I2C_Type, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 return -EINVAL;
628}
629
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630/* Read a descriptor header from I2C based on type */
Alan Cox2742fd82008-04-29 14:45:15 +0100631static int get_descriptor_addr(struct edgeport_serial *serial,
632 int desc_type, struct ti_i2c_desc *rom_desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700633{
634 int start_address;
635 int status;
636
637 /* Search for requested descriptor in I2C */
638 start_address = 2;
639 do {
Alan Cox2742fd82008-04-29 14:45:15 +0100640 status = read_rom(serial,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641 start_address,
642 sizeof(struct ti_i2c_desc),
Alan Cox2742fd82008-04-29 14:45:15 +0100643 (__u8 *)rom_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700644 if (status)
645 return 0;
646
647 if (rom_desc->Type == desc_type)
648 return start_address;
649
Johan Hovold55090762014-04-25 15:23:03 +0200650 start_address = start_address + sizeof(struct ti_i2c_desc) +
651 le16_to_cpu(rom_desc->Size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652
653 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
Alan Cox2742fd82008-04-29 14:45:15 +0100654
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 return 0;
656}
657
658/* Validate descriptor checksum */
Alan Cox2742fd82008-04-29 14:45:15 +0100659static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660{
661 __u16 i;
662 __u8 cs = 0;
663
Johan Hovold55090762014-04-25 15:23:03 +0200664 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 cs = (__u8)(cs + buffer[i]);
Alan Cox2742fd82008-04-29 14:45:15 +0100666
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 if (cs != rom_desc->CheckSum) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700668 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 return -EINVAL;
670 }
671 return 0;
672}
673
674/* Make sure that the I2C image is good */
Alan Cox2742fd82008-04-29 14:45:15 +0100675static int check_i2c_image(struct edgeport_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676{
677 struct device *dev = &serial->serial->dev->dev;
678 int status = 0;
679 struct ti_i2c_desc *rom_desc;
680 int start_address = 2;
681 __u8 *buffer;
682 __u16 ttype;
683
Alan Cox2742fd82008-04-29 14:45:15 +0100684 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100685 if (!rom_desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 return -ENOMEM;
Johan Hovold10c642d2013-12-29 19:22:56 +0100687
Alan Cox2742fd82008-04-29 14:45:15 +0100688 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 if (!buffer) {
Alan Cox2742fd82008-04-29 14:45:15 +0100690 kfree(rom_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 return -ENOMEM;
692 }
693
Alan Cox2742fd82008-04-29 14:45:15 +0100694 /* Read the first byte (Signature0) must be 0x52 or 0x10 */
695 status = read_rom(serial, 0, 1, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 if (status)
Alan Cox2742fd82008-04-29 14:45:15 +0100697 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698
699 if (*buffer != UMP5152 && *buffer != UMP3410) {
Alan Cox2742fd82008-04-29 14:45:15 +0100700 dev_err(dev, "%s - invalid buffer signature\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701 status = -ENODEV;
Alan Cox2742fd82008-04-29 14:45:15 +0100702 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 }
704
705 do {
Alan Cox2742fd82008-04-29 14:45:15 +0100706 /* Validate the I2C */
707 status = read_rom(serial,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708 start_address,
709 sizeof(struct ti_i2c_desc),
710 (__u8 *)rom_desc);
711 if (status)
712 break;
713
Alan Cox2742fd82008-04-29 14:45:15 +0100714 if ((start_address + sizeof(struct ti_i2c_desc) +
Johan Hovold55090762014-04-25 15:23:03 +0200715 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 status = -ENODEV;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700717 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 break;
719 }
720
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700721 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722
Alan Cox2742fd82008-04-29 14:45:15 +0100723 /* Skip type 2 record */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 ttype = rom_desc->Type & 0x0f;
Alan Cox2742fd82008-04-29 14:45:15 +0100725 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
726 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
727 /* Read the descriptor data */
728 status = read_rom(serial, start_address +
729 sizeof(struct ti_i2c_desc),
Johan Hovold55090762014-04-25 15:23:03 +0200730 le16_to_cpu(rom_desc->Size),
731 buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 if (status)
733 break;
734
Alan Cox2742fd82008-04-29 14:45:15 +0100735 status = valid_csum(rom_desc, buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 if (status)
737 break;
738 }
Alan Cox2742fd82008-04-29 14:45:15 +0100739 start_address = start_address + sizeof(struct ti_i2c_desc) +
Johan Hovold55090762014-04-25 15:23:03 +0200740 le16_to_cpu(rom_desc->Size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741
Alan Cox2742fd82008-04-29 14:45:15 +0100742 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
743 (start_address < TI_MAX_I2C_SIZE));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744
Alan Cox2742fd82008-04-29 14:45:15 +0100745 if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
746 (start_address > TI_MAX_I2C_SIZE))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 status = -ENODEV;
748
Alan Cox2742fd82008-04-29 14:45:15 +0100749out:
750 kfree(buffer);
751 kfree(rom_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 return status;
753}
754
Alan Cox2742fd82008-04-29 14:45:15 +0100755static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756{
757 int status;
758 int start_address;
759 struct ti_i2c_desc *rom_desc;
760 struct edge_ti_manuf_descriptor *desc;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700761 struct device *dev = &serial->serial->dev->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762
Alan Cox2742fd82008-04-29 14:45:15 +0100763 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100764 if (!rom_desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 return -ENOMEM;
Johan Hovold10c642d2013-12-29 19:22:56 +0100766
Alan Cox2742fd82008-04-29 14:45:15 +0100767 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
768 rom_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769
770 if (!start_address) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700771 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 status = -ENODEV;
773 goto exit;
774 }
775
Alan Cox2742fd82008-04-29 14:45:15 +0100776 /* Read the descriptor data */
777 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
Johan Hovold55090762014-04-25 15:23:03 +0200778 le16_to_cpu(rom_desc->Size), buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779 if (status)
780 goto exit;
Alan Cox2742fd82008-04-29 14:45:15 +0100781
782 status = valid_csum(rom_desc, buffer);
783
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 desc = (struct edge_ti_manuf_descriptor *)buffer;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700785 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig);
786 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version);
787 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev);
788 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts);
789 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts);
790 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791
792exit:
Alan Cox2742fd82008-04-29 14:45:15 +0100793 kfree(rom_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794 return status;
795}
796
797/* Build firmware header used for firmware update */
Peter E. Berger277bf372015-09-16 03:12:58 -0500798static int build_i2c_fw_hdr(u8 *header, const struct firmware *fw)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799{
800 __u8 *buffer;
801 int buffer_size;
802 int i;
803 __u8 cs = 0;
804 struct ti_i2c_desc *i2c_header;
805 struct ti_i2c_image_header *img_header;
806 struct ti_i2c_firmware_rec *firmware_rec;
Peter E. Bergerc0e34832015-07-31 01:55:06 -0500807 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808
Peter E. Berger75899512015-09-16 03:13:02 -0500809 /*
810 * In order to update the I2C firmware we must change the type 2 record
Alan Cox2742fd82008-04-29 14:45:15 +0100811 * to type 0xF2. This will force the UMP to come up in Boot Mode.
812 * Then while in boot mode, the driver will download the latest
813 * firmware (padded to 15.5k) into the UMP ram. And finally when the
814 * device comes back up in download mode the driver will cause the new
815 * firmware to be copied from the UMP Ram to I2C and the firmware will
816 * update the record type from 0xf2 to 0x02.
817 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818
Peter E. Berger75899512015-09-16 03:13:02 -0500819 /*
820 * Allocate a 15.5k buffer + 2 bytes for version number (Firmware
821 * Record)
822 */
Alan Cox2742fd82008-04-29 14:45:15 +0100823 buffer_size = (((1024 * 16) - 512 ) +
824 sizeof(struct ti_i2c_firmware_rec));
825
826 buffer = kmalloc(buffer_size, GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100827 if (!buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 return -ENOMEM;
Alan Cox2742fd82008-04-29 14:45:15 +0100829
Peter E. Berger75899512015-09-16 03:13:02 -0500830 /* Set entire image of 0xffs */
Alan Cox2742fd82008-04-29 14:45:15 +0100831 memset(buffer, 0xff, buffer_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832
Alan Cox2742fd82008-04-29 14:45:15 +0100833 /* Copy version number into firmware record */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
835
Peter E. Bergerc0e34832015-07-31 01:55:06 -0500836 firmware_rec->Ver_Major = fw_hdr->major_version;
837 firmware_rec->Ver_Minor = fw_hdr->minor_version;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700838
Alan Cox2742fd82008-04-29 14:45:15 +0100839 /* Pointer to fw_down memory image */
Jaswinder Singhd12b2192008-07-04 23:06:09 +0530840 img_header = (struct ti_i2c_image_header *)&fw->data[4];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841
Alan Cox2742fd82008-04-29 14:45:15 +0100842 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
Jaswinder Singhd12b2192008-07-04 23:06:09 +0530843 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844 le16_to_cpu(img_header->Length));
845
846 for (i=0; i < buffer_size; i++) {
847 cs = (__u8)(cs + buffer[i]);
848 }
849
Alan Cox2742fd82008-04-29 14:45:15 +0100850 kfree(buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851
Alan Cox2742fd82008-04-29 14:45:15 +0100852 /* Build new header */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 i2c_header = (struct ti_i2c_desc *)header;
854 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data;
Alan Cox2742fd82008-04-29 14:45:15 +0100855
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK;
Johan Hovoldc03890f2014-04-26 11:53:44 +0200857 i2c_header->Size = cpu_to_le16(buffer_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858 i2c_header->CheckSum = cs;
Peter E. Bergerc0e34832015-07-31 01:55:06 -0500859 firmware_rec->Ver_Major = fw_hdr->major_version;
860 firmware_rec->Ver_Minor = fw_hdr->minor_version;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861
862 return 0;
863}
864
865/* Try to figure out what type of I2c we have */
Alan Cox2742fd82008-04-29 14:45:15 +0100866static int i2c_type_bootmode(struct edgeport_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867{
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700868 struct device *dev = &serial->serial->dev->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869 int status;
Johan Hovolde9305d22009-12-28 23:01:50 +0100870 u8 *data;
871
872 data = kmalloc(1, GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +0100873 if (!data)
Johan Hovolde9305d22009-12-28 23:01:50 +0100874 return -ENOMEM;
Alan Cox2742fd82008-04-29 14:45:15 +0100875
876 /* Try to read type 2 */
877 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
Johan Hovolde9305d22009-12-28 23:01:50 +0100878 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 if (status)
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700880 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 else
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700882 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
Johan Hovolde9305d22009-12-28 23:01:50 +0100883 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700884 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
Johan Hovolde9305d22009-12-28 23:01:50 +0100886 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 }
888
Alan Cox2742fd82008-04-29 14:45:15 +0100889 /* Try to read type 3 */
890 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
Johan Hovolde9305d22009-12-28 23:01:50 +0100891 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892 if (status)
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700893 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894 else
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700895 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
Johan Hovolde9305d22009-12-28 23:01:50 +0100896 if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700897 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
Johan Hovolde9305d22009-12-28 23:01:50 +0100899 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 }
901
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -0700902 dev_dbg(dev, "%s - Unknown\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
Johan Hovolde9305d22009-12-28 23:01:50 +0100904 status = -ENODEV;
905out:
906 kfree(data);
907 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700908}
909
Alan Cox2742fd82008-04-29 14:45:15 +0100910static int bulk_xfer(struct usb_serial *serial, void *buffer,
911 int length, int *num_sent)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912{
913 int status;
914
Alan Cox2742fd82008-04-29 14:45:15 +0100915 status = usb_bulk_msg(serial->dev,
916 usb_sndbulkpipe(serial->dev,
917 serial->port[0]->bulk_out_endpointAddress),
918 buffer, length, num_sent, 1000);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 return status;
920}
921
922/* Download given firmware image to the device (IN BOOT MODE) */
Alan Cox2742fd82008-04-29 14:45:15 +0100923static int download_code(struct edgeport_serial *serial, __u8 *image,
924 int image_length)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925{
926 int status = 0;
927 int pos;
928 int transfer;
929 int done;
930
Alan Cox2742fd82008-04-29 14:45:15 +0100931 /* Transfer firmware image */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 for (pos = 0; pos < image_length; ) {
Alan Cox2742fd82008-04-29 14:45:15 +0100933 /* Read the next buffer from file */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700934 transfer = image_length - pos;
935 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
936 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
937
Alan Cox2742fd82008-04-29 14:45:15 +0100938 /* Transfer data */
939 status = bulk_xfer(serial->serial, &image[pos],
940 transfer, &done);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700941 if (status)
942 break;
Alan Cox2742fd82008-04-29 14:45:15 +0100943 /* Advance buffer pointer */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944 pos += done;
945 }
946
947 return status;
948}
949
Alan Cox2742fd82008-04-29 14:45:15 +0100950/* FIXME!!! */
951static int config_boot_dev(struct usb_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700952{
953 return 0;
954}
955
Alan Cox2742fd82008-04-29 14:45:15 +0100956static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
957{
958 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
959}
960
Peter E. Bergerdcb8e992015-07-31 01:55:07 -0500961static int check_fw_sanity(struct edgeport_serial *serial,
962 const struct firmware *fw)
963{
964 u16 length_total;
965 u8 checksum = 0;
966 int pos;
967 struct device *dev = &serial->serial->interface->dev;
968 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
969
970 if (fw->size < sizeof(struct edgeport_fw_hdr)) {
971 dev_err(dev, "incomplete fw header\n");
972 return -EINVAL;
973 }
974
975 length_total = le16_to_cpu(fw_hdr->length) +
976 sizeof(struct edgeport_fw_hdr);
977
978 if (fw->size != length_total) {
979 dev_err(dev, "bad fw size (expected: %u, got: %zu)\n",
980 length_total, fw->size);
981 return -EINVAL;
982 }
983
984 for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos)
985 checksum += fw->data[pos];
986
987 if (checksum != fw_hdr->checksum) {
988 dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n",
989 fw_hdr->checksum, checksum);
990 return -EINVAL;
991 }
992
993 return 0;
994}
995
Peter E. Berger75899512015-09-16 03:13:02 -0500996/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 * DownloadTIFirmware - Download run-time operating firmware to the TI5052
Alan Cox2742fd82008-04-29 14:45:15 +0100998 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 * This routine downloads the main operating code into the TI5052, using the
1000 * boot code already burned into E2PROM or ROM.
1001 */
Peter E. Bergerb4146162015-09-16 03:13:01 -05001002static int download_fw(struct edgeport_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003{
Peter E. Bergeref9324b22015-09-16 03:12:59 -05001004 struct device *dev = &serial->serial->interface->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 int status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 struct usb_interface_descriptor *interface;
Peter E. Bergerb4146162015-09-16 03:13:01 -05001007 const struct firmware *fw;
1008 const char *fw_name = "edgeport/down3.bin";
1009 struct edgeport_fw_hdr *fw_hdr;
Peter E. Bergerc0e34832015-07-31 01:55:06 -05001010
Peter E. Bergerb4146162015-09-16 03:13:01 -05001011 status = request_firmware(&fw, fw_name, dev);
1012 if (status) {
1013 dev_err(dev, "Failed to load image \"%s\" err %d\n",
1014 fw_name, status);
1015 return status;
1016 }
Peter E. Bergerc0e34832015-07-31 01:55:06 -05001017
Peter E. Bergerb4146162015-09-16 03:13:01 -05001018 if (check_fw_sanity(serial, fw)) {
1019 status = -EINVAL;
1020 goto out;
1021 }
1022
1023 fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1024
1025 /* If on-board version is newer, "fw_version" will be updated later. */
Peter E. Bergerc0e34832015-07-31 01:55:06 -05001026 serial->fw_version = (fw_hdr->major_version << 8) +
1027 fw_hdr->minor_version;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028
Peter E. Berger75899512015-09-16 03:13:02 -05001029 /*
1030 * This routine is entered by both the BOOT mode and the Download mode
Linus Torvalds1da177e2005-04-16 15:20:36 -07001031 * We can determine which code is running by the reading the config
1032 * descriptor and if we have only one bulk pipe it is in boot mode
1033 */
1034 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1035
1036 /* Default to type 2 i2c */
1037 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1038
Alan Cox2742fd82008-04-29 14:45:15 +01001039 status = choose_config(serial->serial->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040 if (status)
Peter E. Bergerb4146162015-09-16 03:13:01 -05001041 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042
1043 interface = &serial->serial->interface->cur_altsetting->desc;
1044 if (!interface) {
Alan Cox2742fd82008-04-29 14:45:15 +01001045 dev_err(dev, "%s - no interface set, error!\n", __func__);
Peter E. Bergerb4146162015-09-16 03:13:01 -05001046 status = -ENODEV;
1047 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 }
1049
Alan Cox2742fd82008-04-29 14:45:15 +01001050 /*
1051 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1052 * if we have more than one endpoint we are definitely in download
1053 * mode
1054 */
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001055 if (interface->bNumEndpoints > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
Peter E. Bergerb4146162015-09-16 03:13:01 -05001057 status = do_download_mode(serial, fw);
1058 } else {
1059 /* Otherwise we will remain in configuring mode */
1060 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1061 status = do_boot_mode(serial, fw);
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001062 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063
Peter E. Bergerb4146162015-09-16 03:13:01 -05001064out:
1065 release_firmware(fw);
1066 return status;
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001067}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001069static int do_download_mode(struct edgeport_serial *serial,
1070 const struct firmware *fw)
1071{
1072 struct device *dev = &serial->serial->interface->dev;
1073 int status = 0;
1074 int start_address;
1075 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1076 int download_cur_ver;
1077 int download_new_ver;
1078 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1079 struct ti_i2c_desc *rom_desc;
1080
1081 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1082
1083 status = check_i2c_image(serial);
1084 if (status) {
1085 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1086 return status;
1087 }
1088
Peter E. Berger75899512015-09-16 03:13:02 -05001089 /*
1090 * Validate Hardware version number
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001091 * Read Manufacturing Descriptor from TI Based Edgeport
1092 */
1093 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1094 if (!ti_manuf_desc)
1095 return -ENOMEM;
1096
1097 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1098 if (status) {
1099 kfree(ti_manuf_desc);
1100 return status;
1101 }
1102
1103 /* Check version number of ION descriptor */
1104 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1105 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1106 __func__, ti_cpu_rev(ti_manuf_desc));
1107 kfree(ti_manuf_desc);
1108 return -EINVAL;
1109 }
1110
1111 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1112 if (!rom_desc) {
1113 kfree(ti_manuf_desc);
1114 return -ENOMEM;
1115 }
1116
1117 /* Search for type 2 record (firmware record) */
1118 start_address = get_descriptor_addr(serial,
1119 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1120 if (start_address != 0) {
1121 struct ti_i2c_firmware_rec *firmware_version;
1122 u8 *record;
1123
1124 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n",
1125 __func__);
1126
1127 firmware_version = kmalloc(sizeof(*firmware_version),
1128 GFP_KERNEL);
1129 if (!firmware_version) {
1130 kfree(rom_desc);
1131 kfree(ti_manuf_desc);
1132 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 }
Alan Cox2742fd82008-04-29 14:45:15 +01001134
Peter E. Berger75899512015-09-16 03:13:02 -05001135 /*
1136 * Validate version number
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001137 * Read the descriptor data
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 */
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001139 status = read_rom(serial, start_address +
1140 sizeof(struct ti_i2c_desc),
1141 sizeof(struct ti_i2c_firmware_rec),
1142 (__u8 *)firmware_version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 if (status) {
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001144 kfree(firmware_version);
1145 kfree(rom_desc);
Alan Cox2742fd82008-04-29 14:45:15 +01001146 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 return status;
1148 }
1149
Peter E. Berger75899512015-09-16 03:13:02 -05001150 /*
1151 * Check version number of download with current
1152 * version in I2c
1153 */
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001154 download_cur_ver = (firmware_version->Ver_Major << 8) +
1155 (firmware_version->Ver_Minor);
1156 download_new_ver = (fw_hdr->major_version << 8) +
1157 (fw_hdr->minor_version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001159 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n",
1160 __func__, firmware_version->Ver_Major,
1161 firmware_version->Ver_Minor,
1162 fw_hdr->major_version, fw_hdr->minor_version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163
Peter E. Berger75899512015-09-16 03:13:02 -05001164 /*
1165 * Check if we have an old version in the I2C and
1166 * update if necessary
1167 */
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001168 if (download_cur_ver < download_new_ver) {
1169 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1170 __func__,
1171 firmware_version->Ver_Major,
1172 firmware_version->Ver_Minor,
1173 fw_hdr->major_version,
1174 fw_hdr->minor_version);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001176 record = kmalloc(1, GFP_KERNEL);
1177 if (!record) {
1178 kfree(firmware_version);
Alan Cox2742fd82008-04-29 14:45:15 +01001179 kfree(rom_desc);
1180 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181 return -ENOMEM;
1182 }
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001183 /*
1184 * In order to update the I2C firmware we must
1185 * change the type 2 record to type 0xF2. This
1186 * will force the UMP to come up in Boot Mode.
1187 * Then while in boot mode, the driver will
1188 * download the latest firmware (padded to
1189 * 15.5k) into the UMP ram. Finally when the
1190 * device comes back up in download mode the
1191 * driver will cause the new firmware to be
1192 * copied from the UMP Ram to I2C and the
1193 * firmware will update the record type from
1194 * 0xf2 to 0x02.
Alan Cox2742fd82008-04-29 14:45:15 +01001195 */
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001196 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1197
Peter E. Berger75899512015-09-16 03:13:02 -05001198 /*
1199 * Change the I2C Firmware record type to
1200 * 0xf2 to trigger an update
1201 */
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001202 status = write_rom(serial, start_address,
1203 sizeof(*record), record);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001204 if (status) {
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001205 kfree(record);
Alan Cox2742fd82008-04-29 14:45:15 +01001206 kfree(firmware_version);
1207 kfree(rom_desc);
1208 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209 return status;
1210 }
1211
Peter E. Berger75899512015-09-16 03:13:02 -05001212 /*
1213 * verify the write -- must do this in order
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001214 * for write to complete before we do the
1215 * hardware reset
1216 */
1217 status = read_rom(serial,
1218 start_address,
1219 sizeof(*record),
1220 record);
1221 if (status) {
1222 kfree(record);
1223 kfree(firmware_version);
1224 kfree(rom_desc);
1225 kfree(ti_manuf_desc);
1226 return status;
1227 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001229 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1230 dev_err(dev, "%s - error resetting device\n",
1231 __func__);
Johan Hovolde9305d22009-12-28 23:01:50 +01001232 kfree(record);
Alan Cox2742fd82008-04-29 14:45:15 +01001233 kfree(firmware_version);
1234 kfree(rom_desc);
1235 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236 return -ENODEV;
1237 }
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001238
1239 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1240
1241 /* Reset UMP -- Back to BOOT MODE */
1242 status = ti_vsend_sync(serial->serial->dev,
1243 UMPC_HARDWARE_RESET,
1244 0, 0, NULL, 0,
1245 TI_VSEND_TIMEOUT_DEFAULT);
1246
1247 dev_dbg(dev, "%s - HARDWARE RESET return %d\n",
1248 __func__, status);
1249
1250 /* return an error on purpose. */
1251 kfree(record);
Alan Cox2742fd82008-04-29 14:45:15 +01001252 kfree(firmware_version);
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001253 kfree(rom_desc);
1254 kfree(ti_manuf_desc);
1255 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256 }
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001257 /* Same or newer fw version is already loaded */
1258 serial->fw_version = download_cur_ver;
1259 kfree(firmware_version);
1260 }
1261 /* Search for type 0xF2 record (firmware blank record) */
1262 else {
1263 start_address = get_descriptor_addr(serial,
1264 I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc);
1265 if (start_address != 0) {
Alan Cox2742fd82008-04-29 14:45:15 +01001266#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001267 sizeof(struct ti_i2c_firmware_rec))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268 __u8 *header;
1269 __u8 *vheader;
1270
Alan Cox2742fd82008-04-29 14:45:15 +01001271 header = kmalloc(HEADER_SIZE, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 if (!header) {
Alan Cox2742fd82008-04-29 14:45:15 +01001273 kfree(rom_desc);
1274 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275 return -ENOMEM;
1276 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277
Alan Cox2742fd82008-04-29 14:45:15 +01001278 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1279 if (!vheader) {
Alan Cox2742fd82008-04-29 14:45:15 +01001280 kfree(header);
1281 kfree(rom_desc);
1282 kfree(ti_manuf_desc);
1283 return -ENOMEM;
1284 }
1285
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001286 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n",
1287 __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01001288
1289 /*
1290 * In order to update the I2C firmware we must change
1291 * the type 2 record to type 0xF2. This will force the
1292 * UMP to come up in Boot Mode. Then while in boot
1293 * mode, the driver will download the latest firmware
1294 * (padded to 15.5k) into the UMP ram. Finally when the
1295 * device comes back up in download mode the driver
1296 * will cause the new firmware to be copied from the
1297 * UMP Ram to I2C and the firmware will update the
1298 * record type from 0xf2 to 0x02.
1299 */
Peter E. Berger277bf372015-09-16 03:12:58 -05001300 status = build_i2c_fw_hdr(header, fw);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001302 kfree(vheader);
1303 kfree(header);
1304 kfree(rom_desc);
1305 kfree(ti_manuf_desc);
Roel Kluinfd6e5bb2010-08-10 14:29:19 -07001306 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307 }
1308
Peter E. Berger75899512015-09-16 03:13:02 -05001309 /*
1310 * Update I2C with type 0xf2 record with correct
1311 * size and checksum
1312 */
Alan Cox2742fd82008-04-29 14:45:15 +01001313 status = write_rom(serial,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 start_address,
1315 HEADER_SIZE,
1316 header);
1317 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001318 kfree(vheader);
1319 kfree(header);
1320 kfree(rom_desc);
1321 kfree(ti_manuf_desc);
Roel Kluin9800eb32010-07-20 15:29:08 -07001322 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 }
1324
Peter E. Berger75899512015-09-16 03:13:02 -05001325 /*
1326 * verify the write -- must do this in order for
1327 * write to complete before we do the hardware reset
1328 */
Alan Cox2742fd82008-04-29 14:45:15 +01001329 status = read_rom(serial, start_address,
1330 HEADER_SIZE, vheader);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331
1332 if (status) {
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001333 dev_dbg(dev, "%s - can't read header back\n",
1334 __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01001335 kfree(vheader);
1336 kfree(header);
1337 kfree(rom_desc);
1338 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339 return status;
1340 }
1341 if (memcmp(vheader, header, HEADER_SIZE)) {
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001342 dev_dbg(dev, "%s - write download record failed\n",
1343 __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01001344 kfree(vheader);
1345 kfree(header);
1346 kfree(rom_desc);
1347 kfree(ti_manuf_desc);
Roel Kluin1e297092010-07-02 00:36:43 +02001348 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001349 }
1350
Alan Cox2742fd82008-04-29 14:45:15 +01001351 kfree(vheader);
1352 kfree(header);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001353
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001354 dev_dbg(dev, "%s - Start firmware update\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355
Alan Cox2742fd82008-04-29 14:45:15 +01001356 /* Tell firmware to copy download image into I2C */
1357 status = ti_vsend_sync(serial->serial->dev,
Peter E. Bergerc3ece7e2015-07-31 01:55:05 -05001358 UMPC_COPY_DNLD_TO_I2C,
1359 0, 0, NULL, 0,
1360 TI_VSEND_TIMEOUT_FW_DOWNLOAD);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001361
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001362 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__,
1363 status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001364 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001365 dev_err(dev,
1366 "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001367 __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01001368 kfree(rom_desc);
1369 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001370 return status;
1371 }
1372 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 }
1374
Peter E. Bergerbebf1f12015-09-16 03:13:00 -05001375 /* The device is running the download code */
1376 kfree(rom_desc);
1377 kfree(ti_manuf_desc);
1378 return 0;
1379}
1380
1381static int do_boot_mode(struct edgeport_serial *serial,
1382 const struct firmware *fw)
1383{
1384 struct device *dev = &serial->serial->interface->dev;
1385 int status = 0;
1386 struct edge_ti_manuf_descriptor *ti_manuf_desc;
1387 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data;
1388
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001389 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390
Alan Cox2742fd82008-04-29 14:45:15 +01001391 /* Configure the TI device so we can use the BULK pipes for download */
1392 status = config_boot_dev(serial->serial->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393 if (status)
1394 return status;
1395
Alan Cox2742fd82008-04-29 14:45:15 +01001396 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1397 != USB_VENDOR_ID_ION) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001398 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1399 le16_to_cpu(serial->serial->dev->descriptor.idVendor));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
Alan Cox2742fd82008-04-29 14:45:15 +01001401 goto stayinbootmode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402 }
1403
Peter E. Berger75899512015-09-16 03:13:02 -05001404 /*
1405 * We have an ION device (I2c Must be programmed)
1406 * Determine I2C image type
1407 */
Alan Cox2742fd82008-04-29 14:45:15 +01001408 if (i2c_type_bootmode(serial))
1409 goto stayinbootmode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410
Alan Cox2742fd82008-04-29 14:45:15 +01001411 /* Check for ION Vendor ID and that the I2C is valid */
1412 if (!check_i2c_image(serial)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001413 struct ti_i2c_image_header *header;
1414 int i;
1415 __u8 cs = 0;
1416 __u8 *buffer;
1417 int buffer_size;
1418
Peter E. Berger75899512015-09-16 03:13:02 -05001419 /*
1420 * Validate Hardware version number
Linus Torvalds1da177e2005-04-16 15:20:36 -07001421 * Read Manufacturing Descriptor from TI Based Edgeport
1422 */
Alan Cox2742fd82008-04-29 14:45:15 +01001423 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +01001424 if (!ti_manuf_desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425 return -ENOMEM;
Johan Hovold10c642d2013-12-29 19:22:56 +01001426
Alan Cox2742fd82008-04-29 14:45:15 +01001427 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001429 kfree(ti_manuf_desc);
1430 goto stayinbootmode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001431 }
1432
Alan Cox2742fd82008-04-29 14:45:15 +01001433 /* Check for version 2 */
1434 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001435 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1436 __func__, ti_cpu_rev(ti_manuf_desc));
Alan Cox2742fd82008-04-29 14:45:15 +01001437 kfree(ti_manuf_desc);
1438 goto stayinbootmode;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001439 }
1440
Alan Cox2742fd82008-04-29 14:45:15 +01001441 kfree(ti_manuf_desc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442
Linus Torvalds1da177e2005-04-16 15:20:36 -07001443 /*
Alan Cox2742fd82008-04-29 14:45:15 +01001444 * In order to update the I2C firmware we must change the type
1445 * 2 record to type 0xF2. This will force the UMP to come up
1446 * in Boot Mode. Then while in boot mode, the driver will
1447 * download the latest firmware (padded to 15.5k) into the
1448 * UMP ram. Finally when the device comes back up in download
1449 * mode the driver will cause the new firmware to be copied
1450 * from the UMP Ram to I2C and the firmware will update the
1451 * record type from 0xf2 to 0x02.
1452 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453 * Do we really have to copy the whole firmware image,
1454 * or could we do this in place!
1455 */
1456
Alan Cox2742fd82008-04-29 14:45:15 +01001457 /* Allocate a 15.5k buffer + 3 byte header */
1458 buffer_size = (((1024 * 16) - 512) +
1459 sizeof(struct ti_i2c_image_header));
1460 buffer = kmalloc(buffer_size, GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +01001461 if (!buffer)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001462 return -ENOMEM;
Alan Cox2742fd82008-04-29 14:45:15 +01001463
1464 /* Initialize the buffer to 0xff (pad the buffer) */
1465 memset(buffer, 0xff, buffer_size);
Jaswinder Singhd12b2192008-07-04 23:06:09 +05301466 memcpy(buffer, &fw->data[4], fw->size - 4);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001467
Alan Cox2742fd82008-04-29 14:45:15 +01001468 for (i = sizeof(struct ti_i2c_image_header);
1469 i < buffer_size; i++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 cs = (__u8)(cs + buffer[i]);
1471 }
Alan Cox2742fd82008-04-29 14:45:15 +01001472
Linus Torvalds1da177e2005-04-16 15:20:36 -07001473 header = (struct ti_i2c_image_header *)buffer;
Alan Cox2742fd82008-04-29 14:45:15 +01001474
1475 /* update length and checksum after padding */
1476 header->Length = cpu_to_le16((__u16)(buffer_size -
1477 sizeof(struct ti_i2c_image_header)));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001478 header->CheckSum = cs;
1479
Alan Cox2742fd82008-04-29 14:45:15 +01001480 /* Download the operational code */
Peter E. Bergerc0e34832015-07-31 01:55:06 -05001481 dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n",
1482 __func__,
1483 fw_hdr->major_version, fw_hdr->minor_version);
Alan Cox2742fd82008-04-29 14:45:15 +01001484 status = download_code(serial, buffer, buffer_size);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001485
Alan Cox2742fd82008-04-29 14:45:15 +01001486 kfree(buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487
1488 if (status) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001489 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001490 return status;
1491 }
1492
Alan Cox2742fd82008-04-29 14:45:15 +01001493 /* Device will reboot */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001494 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1495
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001496 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001497
Johan Hovolde35d6d72017-01-03 16:39:46 +01001498 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001499 }
1500
Alan Cox2742fd82008-04-29 14:45:15 +01001501stayinbootmode:
1502 /* Eprom is invalid or blank stay in boot mode */
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001503 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001504 serial->product_info.TiMode = TI_MODE_BOOT;
1505
Johan Hovold4f9785c2017-01-03 16:39:44 +01001506 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001507}
1508
Alan Cox2742fd82008-04-29 14:45:15 +01001509static int ti_do_config(struct edgeport_port *port, int feature, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510{
Greg Kroah-Hartman11438322013-06-06 10:32:00 -07001511 int port_number = port->port->port_number;
1512
Alan Cox2742fd82008-04-29 14:45:15 +01001513 on = !!on; /* 1 or 0 not bitmask */
1514 return send_cmd(port->port->serial->dev,
1515 feature, (__u8)(UMPM_UART1_PORT + port_number),
1516 on, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517}
1518
Alan Cox2742fd82008-04-29 14:45:15 +01001519static int restore_mcr(struct edgeport_port *port, __u8 mcr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001520{
1521 int status = 0;
1522
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001523 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524
Alan Cox2742fd82008-04-29 14:45:15 +01001525 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001526 if (status)
1527 return status;
Alan Cox2742fd82008-04-29 14:45:15 +01001528 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529 if (status)
1530 return status;
Alan Cox2742fd82008-04-29 14:45:15 +01001531 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001532}
1533
Linus Torvalds1da177e2005-04-16 15:20:36 -07001534/* Convert TI LSR to standard UART flags */
Alan Cox2742fd82008-04-29 14:45:15 +01001535static __u8 map_line_status(__u8 ti_lsr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001536{
1537 __u8 lsr = 0;
1538
1539#define MAP_FLAG(flagUmp, flagUart) \
1540 if (ti_lsr & flagUmp) \
1541 lsr |= flagUart;
1542
1543 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */
1544 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */
1545 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */
1546 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */
Alan Cox2742fd82008-04-29 14:45:15 +01001547 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */
1548 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001549
1550#undef MAP_FLAG
1551
1552 return lsr;
1553}
1554
Alan Cox2742fd82008-04-29 14:45:15 +01001555static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001556{
1557 struct async_icount *icount;
1558 struct tty_struct *tty;
1559
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001560 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001561
Alan Cox2742fd82008-04-29 14:45:15 +01001562 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1563 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
Johan Hovoldcf9a9d62013-03-21 12:37:09 +01001564 icount = &edge_port->port->icount;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001565
1566 /* update input line counters */
1567 if (msr & EDGEPORT_MSR_DELTA_CTS)
1568 icount->cts++;
1569 if (msr & EDGEPORT_MSR_DELTA_DSR)
1570 icount->dsr++;
1571 if (msr & EDGEPORT_MSR_DELTA_CD)
1572 icount->dcd++;
1573 if (msr & EDGEPORT_MSR_DELTA_RI)
1574 icount->rng++;
Johan Hovold48ee5802013-03-21 12:37:10 +01001575 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001576 }
1577
1578 /* Save the new modem status */
1579 edge_port->shadow_msr = msr & 0xf0;
1580
Alan Cox4a90f092008-10-13 10:39:46 +01001581 tty = tty_port_tty_get(&edge_port->port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001582 /* handle CTS flow control */
1583 if (tty && C_CRTSCTS(tty)) {
Peter Hurleyd95e3ca2014-09-10 15:06:27 -04001584 if (msr & EDGEPORT_MSR_CTS)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585 tty_wakeup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001586 }
Alan Cox4a90f092008-10-13 10:39:46 +01001587 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001588}
1589
Alan Cox2742fd82008-04-29 14:45:15 +01001590static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1591 __u8 lsr, __u8 data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001592{
1593 struct async_icount *icount;
Alan Cox2742fd82008-04-29 14:45:15 +01001594 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1595 LSR_FRM_ERR | LSR_BREAK));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001596
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001597 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001598
1599 edge_port->shadow_lsr = lsr;
1600
Alan Cox2742fd82008-04-29 14:45:15 +01001601 if (new_lsr & LSR_BREAK)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001602 /*
1603 * Parity and Framing errors only count if they
1604 * occur exclusive of a break being received.
1605 */
1606 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001607
1608 /* Place LSR data byte into Rx buffer */
Jiri Slaby2e124b42013-01-03 15:53:06 +01001609 if (lsr_data)
1610 edge_tty_recv(edge_port->port, &data, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001611
1612 /* update input line counters */
Johan Hovoldcf9a9d62013-03-21 12:37:09 +01001613 icount = &edge_port->port->icount;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 if (new_lsr & LSR_BREAK)
1615 icount->brk++;
1616 if (new_lsr & LSR_OVER_ERR)
1617 icount->overrun++;
1618 if (new_lsr & LSR_PAR_ERR)
1619 icount->parity++;
1620 if (new_lsr & LSR_FRM_ERR)
1621 icount->frame++;
1622}
1623
Alan Cox2742fd82008-04-29 14:45:15 +01001624static void edge_interrupt_callback(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625{
Ming Leicdc97792008-02-24 18:41:47 +08001626 struct edgeport_serial *edge_serial = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001627 struct usb_serial_port *port;
1628 struct edgeport_port *edge_port;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001629 struct device *dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001630 unsigned char *data = urb->transfer_buffer;
1631 int length = urb->actual_length;
1632 int port_number;
1633 int function;
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001634 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001635 __u8 lsr;
1636 __u8 msr;
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001637 int status = urb->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001638
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001639 switch (status) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640 case 0:
1641 /* success */
1642 break;
1643 case -ECONNRESET:
1644 case -ENOENT:
1645 case -ESHUTDOWN:
1646 /* this urb is terminated, clean up */
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001647 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
Harvey Harrison441b62c2008-03-03 16:08:34 -08001648 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001649 return;
1650 default:
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001651 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
Harvey Harrison441b62c2008-03-03 16:08:34 -08001652 "%d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001653 goto exit;
1654 }
1655
1656 if (!length) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001657 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658 goto exit;
1659 }
1660
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001661 dev = &edge_serial->serial->dev->dev;
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +01001662 usb_serial_debug_data(dev, __func__, length, data);
Alan Cox2742fd82008-04-29 14:45:15 +01001663
1664 if (length != 2) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001665 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
Alan Cox2742fd82008-04-29 14:45:15 +01001666 goto exit;
1667 }
1668
1669 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1670 function = TIUMP_GET_FUNC_FROM_CODE(data[0]);
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001671 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1672 port_number, function, data[1]);
Johan Hovold0b1d2502017-03-06 17:36:37 +01001673
1674 if (port_number >= edge_serial->serial->num_ports) {
1675 dev_err(dev, "bad port number %d\n", port_number);
1676 goto exit;
1677 }
1678
Linus Torvalds1da177e2005-04-16 15:20:36 -07001679 port = edge_serial->serial->port[port_number];
1680 edge_port = usb_get_serial_port_data(port);
1681 if (!edge_port) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001682 dev_dbg(dev, "%s - edge_port not found\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001683 return;
1684 }
1685 switch (function) {
1686 case TIUMP_INTERRUPT_CODE_LSR:
Alan Cox2742fd82008-04-29 14:45:15 +01001687 lsr = map_line_status(data[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001688 if (lsr & UMP_UART_LSR_DATA_MASK) {
Peter E. Berger75899512015-09-16 03:13:02 -05001689 /*
1690 * Save the LSR event for bulk read completion routine
1691 */
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001692 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1693 __func__, port_number, lsr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001694 edge_port->lsr_event = 1;
1695 edge_port->lsr_mask = lsr;
1696 } else {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001697 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1698 __func__, port_number, lsr);
Alan Cox2742fd82008-04-29 14:45:15 +01001699 handle_new_lsr(edge_port, 0, lsr, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001700 }
1701 break;
1702
Alan Cox2742fd82008-04-29 14:45:15 +01001703 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704 /* Copy MSR from UMP */
1705 msr = data[1];
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001706 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1707 __func__, port_number, msr);
Alan Cox2742fd82008-04-29 14:45:15 +01001708 handle_new_msr(edge_port, msr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709 break;
1710
1711 default:
Alan Cox2742fd82008-04-29 14:45:15 +01001712 dev_err(&urb->dev->dev,
1713 "%s - Unknown Interrupt code from UMP %x\n",
1714 __func__, data[1]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715 break;
Alan Cox2742fd82008-04-29 14:45:15 +01001716
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717 }
1718
1719exit:
Alan Cox2742fd82008-04-29 14:45:15 +01001720 retval = usb_submit_urb(urb, GFP_ATOMIC);
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001721 if (retval)
Alan Cox2742fd82008-04-29 14:45:15 +01001722 dev_err(&urb->dev->dev,
1723 "%s - usb_submit_urb failed with result %d\n",
Harvey Harrison441b62c2008-03-03 16:08:34 -08001724 __func__, retval);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001725}
1726
Alan Cox2742fd82008-04-29 14:45:15 +01001727static void edge_bulk_in_callback(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001728{
Ming Leicdc97792008-02-24 18:41:47 +08001729 struct edgeport_port *edge_port = urb->context;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001730 struct device *dev = &edge_port->port->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731 unsigned char *data = urb->transfer_buffer;
John Ogness6778b0c2018-06-24 00:32:07 +02001732 unsigned long flags;
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001733 int retval = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 int port_number;
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001735 int status = urb->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001737 switch (status) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001738 case 0:
1739 /* success */
1740 break;
1741 case -ECONNRESET:
1742 case -ENOENT:
1743 case -ESHUTDOWN:
1744 /* this urb is terminated, clean up */
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001745 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001746 return;
1747 default:
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001748 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001749 }
1750
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001751 if (status == -EPIPE)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752 goto exit;
1753
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001754 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001755 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001756 return;
1757 }
1758
Greg Kroah-Hartman11438322013-06-06 10:32:00 -07001759 port_number = edge_port->port->port_number;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001760
Johan Hovold654b4042017-03-06 17:36:40 +01001761 if (urb->actual_length > 0 && edge_port->lsr_event) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001762 edge_port->lsr_event = 0;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001763 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1764 __func__, port_number, edge_port->lsr_mask, *data);
Alan Cox2742fd82008-04-29 14:45:15 +01001765 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001766 /* Adjust buffer length/pointer */
1767 --urb->actual_length;
1768 ++data;
1769 }
1770
Jiri Slaby2e124b42013-01-03 15:53:06 +01001771 if (urb->actual_length) {
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +01001772 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
Alan Cox2742fd82008-04-29 14:45:15 +01001773 if (edge_port->close_pending)
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001774 dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
Alan Cox2742fd82008-04-29 14:45:15 +01001775 __func__);
1776 else
Jiri Slaby2e124b42013-01-03 15:53:06 +01001777 edge_tty_recv(edge_port->port, data,
Jiri Slaby05c7cd32013-01-03 15:53:04 +01001778 urb->actual_length);
Johan Hovoldcf9a9d62013-03-21 12:37:09 +01001779 edge_port->port->icount.rx += urb->actual_length;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001780 }
1781
1782exit:
1783 /* continue read unless stopped */
John Ogness6778b0c2018-06-24 00:32:07 +02001784 spin_lock_irqsave(&edge_port->ep_lock, flags);
Johan Hovold58330412011-11-06 19:06:28 +01001785 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001786 retval = usb_submit_urb(urb, GFP_ATOMIC);
Johan Hovold58330412011-11-06 19:06:28 +01001787 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001788 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
Johan Hovold58330412011-11-06 19:06:28 +01001789
John Ogness6778b0c2018-06-24 00:32:07 +02001790 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001791 if (retval)
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001792 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001793}
1794
Jiri Slaby2e124b42013-01-03 15:53:06 +01001795static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1796 int length)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001797{
Alan Cox2742fd82008-04-29 14:45:15 +01001798 int queued;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799
Jiri Slaby05c7cd32013-01-03 15:53:04 +01001800 queued = tty_insert_flip_string(&port->port, data, length);
Alan Cox2742fd82008-04-29 14:45:15 +01001801 if (queued < length)
Jiri Slaby05c7cd32013-01-03 15:53:04 +01001802 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
Alan Cox2742fd82008-04-29 14:45:15 +01001803 __func__, length - queued);
Jiri Slaby2e124b42013-01-03 15:53:06 +01001804 tty_flip_buffer_push(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001805}
1806
Alan Cox2742fd82008-04-29 14:45:15 +01001807static void edge_bulk_out_callback(struct urb *urb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001808{
Ming Leicdc97792008-02-24 18:41:47 +08001809 struct usb_serial_port *port = urb->context;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001810 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001811 int status = urb->status;
Alan Cox4a90f092008-10-13 10:39:46 +01001812 struct tty_struct *tty;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001813
Linus Torvalds1da177e2005-04-16 15:20:36 -07001814 edge_port->ep_write_urb_in_use = 0;
1815
Greg Kroah-Hartmanee337c22007-06-15 15:44:13 -07001816 switch (status) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001817 case 0:
1818 /* success */
1819 break;
1820 case -ECONNRESET:
1821 case -ENOENT:
1822 case -ESHUTDOWN:
1823 /* this urb is terminated, clean up */
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001824 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
Harvey Harrison441b62c2008-03-03 16:08:34 -08001825 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001826 return;
1827 default:
Johan Hovold22a416c2012-02-10 13:20:51 +01001828 dev_err_console(port, "%s - nonzero write bulk status "
Harvey Harrison441b62c2008-03-03 16:08:34 -08001829 "received: %d\n", __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830 }
1831
1832 /* send any buffered data */
Alan Cox4a90f092008-10-13 10:39:46 +01001833 tty = tty_port_tty_get(&port->port);
Jiri Slabyae3759c2013-04-04 22:41:01 +02001834 edge_send(port, tty);
Alan Cox4a90f092008-10-13 10:39:46 +01001835 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836}
1837
Alan Coxa509a7e2009-09-19 13:13:26 -07001838static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001839{
1840 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1841 struct edgeport_serial *edge_serial;
1842 struct usb_device *dev;
1843 struct urb *urb;
1844 int port_number;
1845 int status;
1846 u16 open_settings;
1847 u8 transaction_timeout;
1848
Linus Torvalds1da177e2005-04-16 15:20:36 -07001849 if (edge_port == NULL)
1850 return -ENODEV;
1851
Greg Kroah-Hartman11438322013-06-06 10:32:00 -07001852 port_number = port->port_number;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001853
1854 dev = port->serial->dev;
1855
Linus Torvalds1da177e2005-04-16 15:20:36 -07001856 /* turn off loopback */
Alan Cox2742fd82008-04-29 14:45:15 +01001857 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001858 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001859 dev_err(&port->dev,
1860 "%s - cannot send clear loopback command, %d\n",
Harvey Harrison441b62c2008-03-03 16:08:34 -08001861 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001862 return status;
1863 }
Alan Cox2742fd82008-04-29 14:45:15 +01001864
Linus Torvalds1da177e2005-04-16 15:20:36 -07001865 /* set up the port settings */
Alan Cox95da3102008-07-22 11:09:07 +01001866 if (tty)
Alan Coxadc8d742012-07-14 15:31:47 +01001867 edge_set_termios(tty, port, &tty->termios);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001868
1869 /* open up the port */
1870
1871 /* milliseconds to timeout for DMA transfer */
1872 transaction_timeout = 2;
1873
Alan Cox2742fd82008-04-29 14:45:15 +01001874 edge_port->ump_read_timeout =
1875 max(20, ((transaction_timeout * 3) / 2));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001876
Alan Cox2742fd82008-04-29 14:45:15 +01001877 /* milliseconds to timeout for DMA transfer */
1878 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1879 UMP_PIPE_TRANS_TIMEOUT_ENA |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001880 (transaction_timeout << 2));
1881
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001882 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001883
1884 /* Tell TI to open and start the port */
Alan Cox2742fd82008-04-29 14:45:15 +01001885 status = send_cmd(dev, UMPC_OPEN_PORT,
1886 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001887 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001888 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1889 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001890 return status;
1891 }
1892
1893 /* Start the DMA? */
Alan Cox2742fd82008-04-29 14:45:15 +01001894 status = send_cmd(dev, UMPC_START_PORT,
1895 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001896 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001897 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1898 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001899 return status;
1900 }
1901
1902 /* Clear TX and RX buffers in UMP */
Alan Cox2742fd82008-04-29 14:45:15 +01001903 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001904 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001905 dev_err(&port->dev,
1906 "%s - cannot send clear buffers command, %d\n",
1907 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001908 return status;
1909 }
1910
1911 /* Read Initial MSR */
Alan Cox2742fd82008-04-29 14:45:15 +01001912 status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1913 (__u16)(UMPM_UART1_PORT + port_number),
1914 &edge_port->shadow_msr, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001915 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001916 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1917 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001918 return status;
1919 }
1920
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001921 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
Alan Cox2742fd82008-04-29 14:45:15 +01001922
Linus Torvalds1da177e2005-04-16 15:20:36 -07001923 /* Set Initial MCR */
1924 edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07001925 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001926
1927 edge_serial = edge_port->edge_serial;
Matthias Kaehlcke241ca642007-12-04 16:15:40 +01001928 if (mutex_lock_interruptible(&edge_serial->es_lock))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001929 return -ERESTARTSYS;
1930 if (edge_serial->num_ports_open == 0) {
Alan Cox2742fd82008-04-29 14:45:15 +01001931 /* we are the first port to open, post the interrupt urb */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001932 urb = edge_serial->serial->port[0]->interrupt_in_urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001933 urb->context = edge_serial;
Alan Cox2742fd82008-04-29 14:45:15 +01001934 status = usb_submit_urb(urb, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001935 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001936 dev_err(&port->dev,
1937 "%s - usb_submit_urb failed with value %d\n",
1938 __func__, status);
Matthias Kaehlcke241ca642007-12-04 16:15:40 +01001939 goto release_es_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940 }
1941 }
1942
1943 /*
1944 * reset the data toggle on the bulk endpoints to work around bug in
1945 * host controllers where things get out of sync some times
1946 */
Alan Cox2742fd82008-04-29 14:45:15 +01001947 usb_clear_halt(dev, port->write_urb->pipe);
1948 usb_clear_halt(dev, port->read_urb->pipe);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001949
1950 /* start up our bulk read urb */
1951 urb = port->read_urb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001952 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953 urb->context = edge_port;
Alan Cox2742fd82008-04-29 14:45:15 +01001954 status = usb_submit_urb(urb, GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001955 if (status) {
Alan Cox2742fd82008-04-29 14:45:15 +01001956 dev_err(&port->dev,
1957 "%s - read bulk usb_submit_urb failed with value %d\n",
1958 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001959 goto unlink_int_urb;
1960 }
1961
1962 ++edge_serial->num_ports_open;
1963
Matthias Kaehlcke241ca642007-12-04 16:15:40 +01001964 goto release_es_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001965
1966unlink_int_urb:
1967 if (edge_port->edge_serial->num_ports_open == 0)
1968 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
Matthias Kaehlcke241ca642007-12-04 16:15:40 +01001969release_es_lock:
1970 mutex_unlock(&edge_serial->es_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001971 return status;
1972}
1973
Alan Cox335f8512009-06-11 12:26:29 +01001974static void edge_close(struct usb_serial_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001975{
1976 struct edgeport_serial *edge_serial;
1977 struct edgeport_port *edge_port;
Johan Hovoldaf581052012-03-26 20:31:38 +02001978 struct usb_serial *serial = port->serial;
Johan Hovold77de2512013-01-14 16:52:54 +01001979 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980 int port_number;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001981
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982 edge_serial = usb_get_serial_data(port->serial);
1983 edge_port = usb_get_serial_port_data(port);
Alan Cox2742fd82008-04-29 14:45:15 +01001984 if (edge_serial == NULL || edge_port == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001985 return;
Alan Cox2742fd82008-04-29 14:45:15 +01001986
Peter E. Berger75899512015-09-16 03:13:02 -05001987 /*
1988 * The bulkreadcompletion routine will check
1989 * this flag and dump add read data
1990 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001991 edge_port->close_pending = 1;
1992
Linus Torvalds1da177e2005-04-16 15:20:36 -07001993 usb_kill_urb(port->read_urb);
1994 usb_kill_urb(port->write_urb);
1995 edge_port->ep_write_urb_in_use = 0;
Johan Hovold77de2512013-01-14 16:52:54 +01001996 spin_lock_irqsave(&edge_port->ep_lock, flags);
Johan Hovoldddca16e2013-06-26 16:47:37 +02001997 kfifo_reset_out(&port->write_fifo);
Johan Hovold77de2512013-01-14 16:52:54 +01001998 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001999
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002000 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
Greg Kroah-Hartman11438322013-06-06 10:32:00 -07002001 port_number = port->port_number;
Johan Hovoldbca87e92013-03-21 12:37:38 +01002002 send_cmd(serial->dev, UMPC_CLOSE_PORT,
2003 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
Johan Hovoldaf581052012-03-26 20:31:38 +02002004
Matthias Kaehlcke241ca642007-12-04 16:15:40 +01002005 mutex_lock(&edge_serial->es_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002006 --edge_port->edge_serial->num_ports_open;
2007 if (edge_port->edge_serial->num_ports_open <= 0) {
2008 /* last port is now closed, let's shut down our interrupt urb */
2009 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2010 edge_port->edge_serial->num_ports_open = 0;
2011 }
Matthias Kaehlcke241ca642007-12-04 16:15:40 +01002012 mutex_unlock(&edge_serial->es_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002013 edge_port->close_pending = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002014}
2015
Alan Cox95da3102008-07-22 11:09:07 +01002016static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2017 const unsigned char *data, int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002018{
2019 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002020
Linus Torvalds1da177e2005-04-16 15:20:36 -07002021 if (count == 0) {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002022 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002023 return 0;
2024 }
2025
2026 if (edge_port == NULL)
2027 return -ENODEV;
2028 if (edge_port->close_pending == 1)
2029 return -ENODEV;
2030
Johan Hovoldddca16e2013-06-26 16:47:37 +02002031 count = kfifo_in_locked(&port->write_fifo, data, count,
Johan Hovoldd733cec2010-05-19 00:01:37 +02002032 &edge_port->ep_lock);
Jiri Slabyae3759c2013-04-04 22:41:01 +02002033 edge_send(port, tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002034
2035 return count;
2036}
2037
Jiri Slabyae3759c2013-04-04 22:41:01 +02002038static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002039{
2040 int count, result;
2041 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002042 unsigned long flags;
2043
Linus Torvalds1da177e2005-04-16 15:20:36 -07002044 spin_lock_irqsave(&edge_port->ep_lock, flags);
2045
2046 if (edge_port->ep_write_urb_in_use) {
2047 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2048 return;
2049 }
2050
Johan Hovoldddca16e2013-06-26 16:47:37 +02002051 count = kfifo_out(&port->write_fifo,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052 port->write_urb->transfer_buffer,
2053 port->bulk_out_size);
2054
2055 if (count == 0) {
2056 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2057 return;
2058 }
2059
2060 edge_port->ep_write_urb_in_use = 1;
2061
2062 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2063
Greg Kroah-Hartman59d33f22012-09-18 09:58:57 +01002064 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002065
2066 /* set up our urb */
Johan Hovoldfd119612011-11-06 19:06:30 +01002067 port->write_urb->transfer_buffer_length = count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002068
2069 /* send the data out the bulk port */
2070 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2071 if (result) {
Johan Hovold22a416c2012-02-10 13:20:51 +01002072 dev_err_console(port,
Alan Cox2742fd82008-04-29 14:45:15 +01002073 "%s - failed submitting write urb, error %d\n",
2074 __func__, result);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002075 edge_port->ep_write_urb_in_use = 0;
Alan Cox2742fd82008-04-29 14:45:15 +01002076 /* TODO: reschedule edge_send */
2077 } else
Johan Hovoldcf9a9d62013-03-21 12:37:09 +01002078 edge_port->port->icount.tx += count;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002079
Peter E. Berger75899512015-09-16 03:13:02 -05002080 /*
2081 * wakeup any process waiting for writes to complete
2082 * there is now more room in the buffer for new writes
2083 */
Alan Cox2742fd82008-04-29 14:45:15 +01002084 if (tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002085 tty_wakeup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002086}
2087
Alan Cox95da3102008-07-22 11:09:07 +01002088static int edge_write_room(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089{
Alan Cox95da3102008-07-22 11:09:07 +01002090 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2092 int room = 0;
2093 unsigned long flags;
2094
Linus Torvalds1da177e2005-04-16 15:20:36 -07002095 if (edge_port == NULL)
Alan Cox2742fd82008-04-29 14:45:15 +01002096 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 if (edge_port->close_pending == 1)
Alan Cox2742fd82008-04-29 14:45:15 +01002098 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002099
2100 spin_lock_irqsave(&edge_port->ep_lock, flags);
Johan Hovoldddca16e2013-06-26 16:47:37 +02002101 room = kfifo_avail(&port->write_fifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2103
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002104 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105 return room;
2106}
2107
Alan Cox95da3102008-07-22 11:09:07 +01002108static int edge_chars_in_buffer(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002109{
Alan Cox95da3102008-07-22 11:09:07 +01002110 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002111 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2112 int chars = 0;
2113 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002114 if (edge_port == NULL)
Alan Cox2742fd82008-04-29 14:45:15 +01002115 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002116
2117 spin_lock_irqsave(&edge_port->ep_lock, flags);
Johan Hovoldddca16e2013-06-26 16:47:37 +02002118 chars = kfifo_len(&port->write_fifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2120
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002121 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002122 return chars;
2123}
2124
Johan Hovoldb16634a2013-05-05 20:32:31 +02002125static bool edge_tx_empty(struct usb_serial_port *port)
2126{
2127 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2128 int ret;
2129
2130 ret = tx_active(edge_port);
2131 if (ret > 0)
2132 return false;
2133
2134 return true;
2135}
2136
Alan Cox95da3102008-07-22 11:09:07 +01002137static void edge_throttle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002138{
Alan Cox95da3102008-07-22 11:09:07 +01002139 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002140 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002141 int status;
2142
Linus Torvalds1da177e2005-04-16 15:20:36 -07002143 if (edge_port == NULL)
2144 return;
2145
Linus Torvalds1da177e2005-04-16 15:20:36 -07002146 /* if we are implementing XON/XOFF, send the stop character */
2147 if (I_IXOFF(tty)) {
2148 unsigned char stop_char = STOP_CHAR(tty);
Alan Cox95da3102008-07-22 11:09:07 +01002149 status = edge_write(tty, port, &stop_char, 1);
2150 if (status <= 0) {
2151 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2152 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002153 }
2154
Peter E. Berger75899512015-09-16 03:13:02 -05002155 /*
2156 * if we are implementing RTS/CTS, stop reads
2157 * and the Edgeport will clear the RTS line
2158 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002159 if (C_CRTSCTS(tty))
2160 stop_read(edge_port);
2161
2162}
2163
Alan Cox95da3102008-07-22 11:09:07 +01002164static void edge_unthrottle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165{
Alan Cox95da3102008-07-22 11:09:07 +01002166 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002167 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002168 int status;
2169
Linus Torvalds1da177e2005-04-16 15:20:36 -07002170 if (edge_port == NULL)
2171 return;
2172
Linus Torvalds1da177e2005-04-16 15:20:36 -07002173 /* if we are implementing XON/XOFF, send the start character */
2174 if (I_IXOFF(tty)) {
2175 unsigned char start_char = START_CHAR(tty);
Alan Cox95da3102008-07-22 11:09:07 +01002176 status = edge_write(tty, port, &start_char, 1);
2177 if (status <= 0) {
2178 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2179 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180 }
Peter E. Berger75899512015-09-16 03:13:02 -05002181 /*
2182 * if we are implementing RTS/CTS, restart reads
2183 * are the Edgeport will assert the RTS line
2184 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002185 if (C_CRTSCTS(tty)) {
2186 status = restart_read(edge_port);
2187 if (status)
Alan Cox2742fd82008-04-29 14:45:15 +01002188 dev_err(&port->dev,
2189 "%s - read bulk usb_submit_urb failed: %d\n",
2190 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002191 }
2192
2193}
2194
2195static void stop_read(struct edgeport_port *edge_port)
2196{
2197 unsigned long flags;
2198
2199 spin_lock_irqsave(&edge_port->ep_lock, flags);
2200
2201 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2202 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2203 edge_port->shadow_mcr &= ~MCR_RTS;
2204
2205 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2206}
2207
2208static int restart_read(struct edgeport_port *edge_port)
2209{
2210 struct urb *urb;
2211 int status = 0;
2212 unsigned long flags;
2213
2214 spin_lock_irqsave(&edge_port->ep_lock, flags);
2215
2216 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2217 urb = edge_port->port->read_urb;
Oliver Neukumefdff602007-06-05 10:50:48 +02002218 status = usb_submit_urb(urb, GFP_ATOMIC);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002219 }
2220 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2221 edge_port->shadow_mcr |= MCR_RTS;
2222
2223 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2224
2225 return status;
2226}
2227
Alan Cox95da3102008-07-22 11:09:07 +01002228static void change_port_settings(struct tty_struct *tty,
2229 struct edgeport_port *edge_port, struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002230{
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002231 struct device *dev = &edge_port->port->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002232 struct ump_uart_config *config;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002233 int baud;
2234 unsigned cflag;
2235 int status;
Greg Kroah-Hartman11438322013-06-06 10:32:00 -07002236 int port_number = edge_port->port->port_number;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002237
Alan Cox95da3102008-07-22 11:09:07 +01002238 config = kmalloc (sizeof (*config), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002239 if (!config) {
Alan Coxadc8d742012-07-14 15:31:47 +01002240 tty->termios = *old_termios;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002241 return;
2242 }
2243
Alan Coxadc8d742012-07-14 15:31:47 +01002244 cflag = tty->termios.c_cflag;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002245
2246 config->wFlags = 0;
2247
2248 /* These flags must be set */
2249 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2250 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2251 config->bUartMode = (__u8)(edge_port->bUartMode);
2252
2253 switch (cflag & CSIZE) {
Alan Cox2742fd82008-04-29 14:45:15 +01002254 case CS5:
2255 config->bDataBits = UMP_UART_CHAR5BITS;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002256 dev_dbg(dev, "%s - data bits = 5\n", __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01002257 break;
2258 case CS6:
2259 config->bDataBits = UMP_UART_CHAR6BITS;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002260 dev_dbg(dev, "%s - data bits = 6\n", __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01002261 break;
2262 case CS7:
2263 config->bDataBits = UMP_UART_CHAR7BITS;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002264 dev_dbg(dev, "%s - data bits = 7\n", __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01002265 break;
2266 default:
2267 case CS8:
2268 config->bDataBits = UMP_UART_CHAR8BITS;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002269 dev_dbg(dev, "%s - data bits = 8\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002270 break;
2271 }
2272
2273 if (cflag & PARENB) {
2274 if (cflag & PARODD) {
2275 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2276 config->bParity = UMP_UART_ODDPARITY;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002277 dev_dbg(dev, "%s - parity = odd\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002278 } else {
2279 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2280 config->bParity = UMP_UART_EVENPARITY;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002281 dev_dbg(dev, "%s - parity = even\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002282 }
2283 } else {
Alan Cox2742fd82008-04-29 14:45:15 +01002284 config->bParity = UMP_UART_NOPARITY;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002285 dev_dbg(dev, "%s - parity = none\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286 }
2287
2288 if (cflag & CSTOPB) {
2289 config->bStopBits = UMP_UART_STOPBIT2;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002290 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002291 } else {
2292 config->bStopBits = UMP_UART_STOPBIT1;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002293 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002294 }
2295
2296 /* figure out the flow control settings */
2297 if (cflag & CRTSCTS) {
2298 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2299 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002300 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002301 } else {
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002302 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002303 restart_read(edge_port);
2304 }
2305
Peter E. Berger75899512015-09-16 03:13:02 -05002306 /*
2307 * if we are implementing XON/XOFF, set the start and stop
2308 * character in the device
2309 */
Alan Cox2742fd82008-04-29 14:45:15 +01002310 config->cXon = START_CHAR(tty);
2311 config->cXoff = STOP_CHAR(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002312
Alan Cox2742fd82008-04-29 14:45:15 +01002313 /* if we are implementing INBOUND XON/XOFF */
2314 if (I_IXOFF(tty)) {
2315 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002316 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2317 __func__, config->cXon, config->cXoff);
Alan Cox2742fd82008-04-29 14:45:15 +01002318 } else
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002319 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320
Alan Cox2742fd82008-04-29 14:45:15 +01002321 /* if we are implementing OUTBOUND XON/XOFF */
2322 if (I_IXON(tty)) {
2323 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002324 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2325 __func__, config->cXon, config->cXoff);
Alan Cox2742fd82008-04-29 14:45:15 +01002326 } else
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002327 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328
Alan Coxadc8d742012-07-14 15:31:47 +01002329 tty->termios.c_cflag &= ~CMSPAR;
Alan Coxd5f5bcd2008-01-03 16:57:33 +00002330
Linus Torvalds1da177e2005-04-16 15:20:36 -07002331 /* Round the baud rate */
2332 baud = tty_get_baud_rate(tty);
2333 if (!baud) {
2334 /* pick a default, any default... */
2335 baud = 9600;
Johan Hovold6aeb75e2017-05-11 11:41:21 +02002336 } else {
2337 /* Avoid a zero divisor. */
2338 baud = min(baud, 461550);
Alan Coxd5f5bcd2008-01-03 16:57:33 +00002339 tty_encode_baud_rate(tty, baud, baud);
Johan Hovold6aeb75e2017-05-11 11:41:21 +02002340 }
Alan Coxd5f5bcd2008-01-03 16:57:33 +00002341
Linus Torvalds1da177e2005-04-16 15:20:36 -07002342 edge_port->baud_rate = baud;
2343 config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2344
Alan Coxd5f5bcd2008-01-03 16:57:33 +00002345 /* FIXME: Recompute actual baud from divisor here */
2346
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002347 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002348
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002349 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate));
2350 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags);
2351 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits);
2352 dev_dbg(dev, "bParity: %d\n", config->bParity);
2353 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits);
2354 dev_dbg(dev, "cXon: %d\n", config->cXon);
2355 dev_dbg(dev, "cXoff: %d\n", config->cXoff);
2356 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002357
2358 /* move the word values into big endian mode */
Alan Cox2742fd82008-04-29 14:45:15 +01002359 cpu_to_be16s(&config->wFlags);
2360 cpu_to_be16s(&config->wBaudRate);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002361
Alan Cox2742fd82008-04-29 14:45:15 +01002362 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002363 (__u8)(UMPM_UART1_PORT + port_number),
Alan Cox2742fd82008-04-29 14:45:15 +01002364 0, (__u8 *)config, sizeof(*config));
2365 if (status)
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002366 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2367 __func__, status);
Alan Cox2742fd82008-04-29 14:45:15 +01002368 kfree(config);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002369}
2370
Alan Cox2e0ddd62008-07-22 11:12:33 +01002371static void edge_set_termios(struct tty_struct *tty,
Alan Cox95da3102008-07-22 11:09:07 +01002372 struct usb_serial_port *port, struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002373{
2374 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002375
2376 if (edge_port == NULL)
2377 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002378 /* change the port settings to the new ones specified */
Alan Cox95da3102008-07-22 11:09:07 +01002379 change_port_settings(tty, edge_port, old_termios);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002380}
2381
Alan Cox20b9d172011-02-14 16:26:50 +00002382static int edge_tiocmset(struct tty_struct *tty,
Alan Cox2742fd82008-04-29 14:45:15 +01002383 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384{
Alan Cox95da3102008-07-22 11:09:07 +01002385 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002386 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2387 unsigned int mcr;
Alan Cox3d71fe02008-02-20 21:38:32 +00002388 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002389
Alan Cox3d71fe02008-02-20 21:38:32 +00002390 spin_lock_irqsave(&edge_port->ep_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002391 mcr = edge_port->shadow_mcr;
2392 if (set & TIOCM_RTS)
2393 mcr |= MCR_RTS;
2394 if (set & TIOCM_DTR)
2395 mcr |= MCR_DTR;
2396 if (set & TIOCM_LOOP)
2397 mcr |= MCR_LOOPBACK;
2398
2399 if (clear & TIOCM_RTS)
2400 mcr &= ~MCR_RTS;
2401 if (clear & TIOCM_DTR)
2402 mcr &= ~MCR_DTR;
2403 if (clear & TIOCM_LOOP)
2404 mcr &= ~MCR_LOOPBACK;
2405
2406 edge_port->shadow_mcr = mcr;
Alan Cox3d71fe02008-02-20 21:38:32 +00002407 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002408
Alan Cox2742fd82008-04-29 14:45:15 +01002409 restore_mcr(edge_port, mcr);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002410 return 0;
2411}
2412
Alan Cox60b33c12011-02-14 16:26:14 +00002413static int edge_tiocmget(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002414{
Alan Cox95da3102008-07-22 11:09:07 +01002415 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002416 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2417 unsigned int result = 0;
2418 unsigned int msr;
2419 unsigned int mcr;
Alan Cox3d71fe02008-02-20 21:38:32 +00002420 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002421
Alan Cox3d71fe02008-02-20 21:38:32 +00002422 spin_lock_irqsave(&edge_port->ep_lock, flags);
2423
Linus Torvalds1da177e2005-04-16 15:20:36 -07002424 msr = edge_port->shadow_msr;
2425 mcr = edge_port->shadow_mcr;
2426 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */
2427 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */
2428 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */
2429 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */
2430 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */
2431 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */
2432
2433
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002434 dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
Alan Cox3d71fe02008-02-20 21:38:32 +00002435 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002436
2437 return result;
2438}
2439
Alan Cox2742fd82008-04-29 14:45:15 +01002440static int get_serial_info(struct edgeport_port *edge_port,
2441 struct serial_struct __user *retinfo)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002442{
2443 struct serial_struct tmp;
Johan Hovoldf40d7812013-01-14 16:52:58 +01002444 unsigned cwait;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002445
Johan Hovoldf40d7812013-01-14 16:52:58 +01002446 cwait = edge_port->port->port.closing_wait;
2447 if (cwait != ASYNC_CLOSING_WAIT_NONE)
Johan Hovoldb6fd35e2013-04-18 17:33:17 +02002448 cwait = jiffies_to_msecs(cwait) / 10;
Johan Hovoldf40d7812013-01-14 16:52:58 +01002449
Linus Torvalds1da177e2005-04-16 15:20:36 -07002450 memset(&tmp, 0, sizeof(tmp));
2451
2452 tmp.type = PORT_16550A;
Greg Kroah-Hartmane5b1e202013-06-07 11:04:28 -07002453 tmp.line = edge_port->port->minor;
Greg Kroah-Hartman11438322013-06-06 10:32:00 -07002454 tmp.port = edge_port->port->port_number;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002455 tmp.irq = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002456 tmp.xmit_fifo_size = edge_port->port->bulk_out_size;
2457 tmp.baud_base = 9600;
2458 tmp.close_delay = 5*HZ;
Johan Hovoldf40d7812013-01-14 16:52:58 +01002459 tmp.closing_wait = cwait;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002460
2461 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2462 return -EFAULT;
2463 return 0;
2464}
2465
Alan Cox00a0d0d2011-02-14 16:27:06 +00002466static int edge_ioctl(struct tty_struct *tty,
Alan Cox2742fd82008-04-29 14:45:15 +01002467 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002468{
Alan Cox95da3102008-07-22 11:09:07 +01002469 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002470 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002471
Linus Torvalds1da177e2005-04-16 15:20:36 -07002472 switch (cmd) {
Alan Cox2742fd82008-04-29 14:45:15 +01002473 case TIOCGSERIAL:
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002474 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
Alan Cox2742fd82008-04-29 14:45:15 +01002475 return get_serial_info(edge_port,
2476 (struct serial_struct __user *) arg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002477 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002478 return -ENOIOCTLCMD;
2479}
2480
Alan Cox95da3102008-07-22 11:09:07 +01002481static void edge_break(struct tty_struct *tty, int break_state)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002482{
Alan Cox95da3102008-07-22 11:09:07 +01002483 struct usb_serial_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002484 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2485 int status;
Alan Cox2742fd82008-04-29 14:45:15 +01002486 int bv = 0; /* Off */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002487
Alan Cox95da3102008-07-22 11:09:07 +01002488 if (break_state == -1)
Alan Cox2742fd82008-04-29 14:45:15 +01002489 bv = 1; /* On */
2490 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2491 if (status)
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002492 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2493 __func__, status);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002494}
2495
Peter E. Berger26c78da2015-07-31 01:55:08 -05002496static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial)
2497{
2498 if (!edge_serial->use_heartbeat)
2499 return;
2500
2501 schedule_delayed_work(&edge_serial->heartbeat_work,
2502 FW_HEARTBEAT_SECS * HZ);
2503}
2504
2505static void edge_heartbeat_work(struct work_struct *work)
2506{
2507 struct edgeport_serial *serial;
2508 struct ti_i2c_desc *rom_desc;
2509
2510 serial = container_of(work, struct edgeport_serial,
2511 heartbeat_work.work);
2512
2513 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
2514
2515 /* Descriptor address request is enough to reset the firmware timer */
2516 if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
2517 rom_desc)) {
2518 dev_err(&serial->serial->interface->dev,
2519 "%s - Incomplete heartbeat\n", __func__);
2520 }
2521 kfree(rom_desc);
2522
2523 edge_heartbeat_schedule(serial);
2524}
2525
Johan Hovold49f4ff22017-03-16 17:13:41 +01002526static int edge_calc_num_ports(struct usb_serial *serial,
2527 struct usb_serial_endpoints *epds)
2528{
2529 struct device *dev = &serial->interface->dev;
2530 unsigned char num_ports = serial->type->num_ports;
2531
2532 /* Make sure we have the required endpoints when in download mode. */
2533 if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) {
2534 if (epds->num_bulk_in < num_ports ||
Johan Hovold9c8299b2017-03-16 17:13:43 +01002535 epds->num_bulk_out < num_ports ||
2536 epds->num_interrupt_in < 1) {
Johan Hovold49f4ff22017-03-16 17:13:41 +01002537 dev_err(dev, "required endpoints missing\n");
2538 return -ENODEV;
2539 }
2540 }
2541
2542 return num_ports;
2543}
2544
Alan Cox2742fd82008-04-29 14:45:15 +01002545static int edge_startup(struct usb_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002546{
2547 struct edgeport_serial *edge_serial;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002548 int status;
Peter E. Berger26c78da2015-07-31 01:55:08 -05002549 u16 product_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002550
2551 /* create our private serial structure */
Eric Sesterhenn80b6ca42006-02-27 21:29:43 +01002552 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
Johan Hovold10c642d2013-12-29 19:22:56 +01002553 if (!edge_serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002554 return -ENOMEM;
Johan Hovold10c642d2013-12-29 19:22:56 +01002555
Matthias Kaehlcke241ca642007-12-04 16:15:40 +01002556 mutex_init(&edge_serial->es_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002557 edge_serial->serial = serial;
Johan Hovold4f9785c2017-01-03 16:39:44 +01002558 INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002559 usb_set_serial_data(serial, edge_serial);
2560
Peter E. Bergerb4146162015-09-16 03:13:01 -05002561 status = download_fw(edge_serial);
Johan Hovold4f9785c2017-01-03 16:39:44 +01002562 if (status < 0) {
Alan Cox2742fd82008-04-29 14:45:15 +01002563 kfree(edge_serial);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002564 return status;
2565 }
2566
Johan Hovold4f9785c2017-01-03 16:39:44 +01002567 if (status > 0)
2568 return 1; /* bind but do not register any ports */
2569
Peter E. Berger26c78da2015-07-31 01:55:08 -05002570 product_id = le16_to_cpu(
2571 edge_serial->serial->dev->descriptor.idProduct);
2572
2573 /* Currently only the EP/416 models require heartbeat support */
2574 if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) {
2575 if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 ||
2576 product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) {
2577 edge_serial->use_heartbeat = true;
2578 }
2579 }
2580
Peter E. Berger26c78da2015-07-31 01:55:08 -05002581 edge_heartbeat_schedule(edge_serial);
2582
Linus Torvalds1da177e2005-04-16 15:20:36 -07002583 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002584}
2585
Alan Sternf9c99bb2009-06-02 11:53:55 -04002586static void edge_disconnect(struct usb_serial *serial)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002587{
Johan Hovold2330d0a2017-01-03 16:39:45 +01002588 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2589
2590 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
Alan Sternf9c99bb2009-06-02 11:53:55 -04002591}
2592
2593static void edge_release(struct usb_serial *serial)
2594{
Peter E. Berger26c78da2015-07-31 01:55:08 -05002595 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2596
2597 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
2598 kfree(edge_serial);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002599}
2600
Johan Hovold00361532012-10-17 13:34:58 +02002601static int edge_port_probe(struct usb_serial_port *port)
2602{
2603 struct edgeport_port *edge_port;
2604 int ret;
2605
2606 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2607 if (!edge_port)
2608 return -ENOMEM;
2609
Johan Hovold00361532012-10-17 13:34:58 +02002610 spin_lock_init(&edge_port->ep_lock);
2611 edge_port->port = port;
2612 edge_port->edge_serial = usb_get_serial_data(port->serial);
2613 edge_port->bUartMode = default_uart_mode;
2614
Johan Hovold0fce06d2013-06-26 16:47:38 +02002615 switch (port->port_number) {
2616 case 0:
2617 edge_port->uart_base = UMPMEM_BASE_UART1;
2618 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2619 break;
2620 case 1:
2621 edge_port->uart_base = UMPMEM_BASE_UART2;
2622 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2623 break;
2624 default:
2625 dev_err(&port->dev, "unknown port number\n");
2626 ret = -ENODEV;
2627 goto err;
2628 }
2629
2630 dev_dbg(&port->dev,
2631 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2632 __func__, port->port_number, edge_port->uart_base,
2633 edge_port->dma_address);
2634
Johan Hovold00361532012-10-17 13:34:58 +02002635 usb_set_serial_port_data(port, edge_port);
2636
Johan Hovold5d8c61b2012-10-18 11:43:28 +02002637 ret = edge_create_sysfs_attrs(port);
Johan Hovold0fce06d2013-06-26 16:47:38 +02002638 if (ret)
2639 goto err;
Johan Hovold5d8c61b2012-10-18 11:43:28 +02002640
Johan Hovoldf40d7812013-01-14 16:52:58 +01002641 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
Johan Hovoldd7be6222013-06-26 16:47:23 +02002642 port->port.drain_delay = 1;
Johan Hovoldf40d7812013-01-14 16:52:58 +01002643
Johan Hovold00361532012-10-17 13:34:58 +02002644 return 0;
Johan Hovold0fce06d2013-06-26 16:47:38 +02002645err:
2646 kfree(edge_port);
2647
2648 return ret;
Johan Hovold00361532012-10-17 13:34:58 +02002649}
2650
2651static int edge_port_remove(struct usb_serial_port *port)
2652{
2653 struct edgeport_port *edge_port;
2654
2655 edge_port = usb_get_serial_port_data(port);
Johan Hovold00361532012-10-17 13:34:58 +02002656 edge_remove_sysfs_attrs(port);
Johan Hovold00361532012-10-17 13:34:58 +02002657 kfree(edge_port);
2658
2659 return 0;
2660}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002661
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002662/* Sysfs Attributes */
2663
Greg Kroah-Hartman154547c2013-08-23 16:18:34 -07002664static ssize_t uart_mode_show(struct device *dev,
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002665 struct device_attribute *attr, char *buf)
2666{
2667 struct usb_serial_port *port = to_usb_serial_port(dev);
2668 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2669
2670 return sprintf(buf, "%d\n", edge_port->bUartMode);
2671}
2672
Greg Kroah-Hartman154547c2013-08-23 16:18:34 -07002673static ssize_t uart_mode_store(struct device *dev,
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002674 struct device_attribute *attr, const char *valbuf, size_t count)
2675{
2676 struct usb_serial_port *port = to_usb_serial_port(dev);
2677 struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2678 unsigned int v = simple_strtoul(valbuf, NULL, 0);
2679
Greg Kroah-Hartman67e6da72012-09-14 16:58:58 -07002680 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002681
2682 if (v < 256)
2683 edge_port->bUartMode = v;
2684 else
Harvey Harrison441b62c2008-03-03 16:08:34 -08002685 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002686
2687 return count;
2688}
Greg Kroah-Hartman154547c2013-08-23 16:18:34 -07002689static DEVICE_ATTR_RW(uart_mode);
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002690
2691static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2692{
2693 return device_create_file(&port->dev, &dev_attr_uart_mode);
2694}
2695
2696static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2697{
2698 device_remove_file(&port->dev, &dev_attr_uart_mode);
2699 return 0;
2700}
2701
Peter E. Berger26c78da2015-07-31 01:55:08 -05002702#ifdef CONFIG_PM
2703static int edge_suspend(struct usb_serial *serial, pm_message_t message)
2704{
2705 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2706
2707 cancel_delayed_work_sync(&edge_serial->heartbeat_work);
2708
2709 return 0;
2710}
2711
2712static int edge_resume(struct usb_serial *serial)
2713{
2714 struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
2715
2716 edge_heartbeat_schedule(edge_serial);
2717
2718 return 0;
2719}
2720#endif
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002721
Greg Kroah-Hartmanea653702005-06-20 21:15:16 -07002722static struct usb_serial_driver edgeport_1port_device = {
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -07002723 .driver = {
Greg Kroah-Hartman269bda12005-06-20 21:15:16 -07002724 .owner = THIS_MODULE,
2725 .name = "edgeport_ti_1",
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -07002726 },
Greg Kroah-Hartman269bda12005-06-20 21:15:16 -07002727 .description = "Edgeport TI 1 port adapter",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002728 .id_table = edgeport_1port_id_table,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002729 .num_ports = 1,
Johan Hovold8d9c4d92017-03-16 17:13:42 +01002730 .num_bulk_out = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002731 .open = edge_open,
2732 .close = edge_close,
2733 .throttle = edge_throttle,
2734 .unthrottle = edge_unthrottle,
2735 .attach = edge_startup,
Johan Hovold49f4ff22017-03-16 17:13:41 +01002736 .calc_num_ports = edge_calc_num_ports,
Alan Sternf9c99bb2009-06-02 11:53:55 -04002737 .disconnect = edge_disconnect,
2738 .release = edge_release,
Johan Hovold00361532012-10-17 13:34:58 +02002739 .port_probe = edge_port_probe,
2740 .port_remove = edge_port_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002741 .ioctl = edge_ioctl,
2742 .set_termios = edge_set_termios,
2743 .tiocmget = edge_tiocmget,
2744 .tiocmset = edge_tiocmset,
Johan Hovold48ee5802013-03-21 12:37:10 +01002745 .tiocmiwait = usb_serial_generic_tiocmiwait,
Johan Hovoldcf9a9d62013-03-21 12:37:09 +01002746 .get_icount = usb_serial_generic_get_icount,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002747 .write = edge_write,
2748 .write_room = edge_write_room,
2749 .chars_in_buffer = edge_chars_in_buffer,
Johan Hovoldb16634a2013-05-05 20:32:31 +02002750 .tx_empty = edge_tx_empty,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002751 .break_ctl = edge_break,
2752 .read_int_callback = edge_interrupt_callback,
2753 .read_bulk_callback = edge_bulk_in_callback,
2754 .write_bulk_callback = edge_bulk_out_callback,
Peter E. Berger26c78da2015-07-31 01:55:08 -05002755#ifdef CONFIG_PM
2756 .suspend = edge_suspend,
2757 .resume = edge_resume,
2758#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002759};
2760
Greg Kroah-Hartmanea653702005-06-20 21:15:16 -07002761static struct usb_serial_driver edgeport_2port_device = {
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -07002762 .driver = {
Greg Kroah-Hartman269bda12005-06-20 21:15:16 -07002763 .owner = THIS_MODULE,
2764 .name = "edgeport_ti_2",
Greg Kroah-Hartman18fcac32005-06-20 21:15:16 -07002765 },
Greg Kroah-Hartman269bda12005-06-20 21:15:16 -07002766 .description = "Edgeport TI 2 port adapter",
Linus Torvalds1da177e2005-04-16 15:20:36 -07002767 .id_table = edgeport_2port_id_table,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002768 .num_ports = 2,
Johan Hovold8d9c4d92017-03-16 17:13:42 +01002769 .num_bulk_out = 1,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002770 .open = edge_open,
2771 .close = edge_close,
2772 .throttle = edge_throttle,
2773 .unthrottle = edge_unthrottle,
2774 .attach = edge_startup,
Johan Hovold49f4ff22017-03-16 17:13:41 +01002775 .calc_num_ports = edge_calc_num_ports,
Alan Sternf9c99bb2009-06-02 11:53:55 -04002776 .disconnect = edge_disconnect,
2777 .release = edge_release,
Johan Hovold00361532012-10-17 13:34:58 +02002778 .port_probe = edge_port_probe,
2779 .port_remove = edge_port_remove,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002780 .ioctl = edge_ioctl,
2781 .set_termios = edge_set_termios,
2782 .tiocmget = edge_tiocmget,
2783 .tiocmset = edge_tiocmset,
Johan Hovold48ee5802013-03-21 12:37:10 +01002784 .tiocmiwait = usb_serial_generic_tiocmiwait,
Johan Hovoldcf9a9d62013-03-21 12:37:09 +01002785 .get_icount = usb_serial_generic_get_icount,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002786 .write = edge_write,
2787 .write_room = edge_write_room,
2788 .chars_in_buffer = edge_chars_in_buffer,
Johan Hovoldb16634a2013-05-05 20:32:31 +02002789 .tx_empty = edge_tx_empty,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002790 .break_ctl = edge_break,
2791 .read_int_callback = edge_interrupt_callback,
2792 .read_bulk_callback = edge_bulk_in_callback,
2793 .write_bulk_callback = edge_bulk_out_callback,
Peter E. Berger26c78da2015-07-31 01:55:08 -05002794#ifdef CONFIG_PM
2795 .suspend = edge_suspend,
2796 .resume = edge_resume,
2797#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002798};
2799
Alan Stern7dbe2462012-02-23 14:56:57 -05002800static struct usb_serial_driver * const serial_drivers[] = {
2801 &edgeport_1port_device, &edgeport_2port_device, NULL
2802};
2803
Greg Kroah-Hartman68e24112012-05-08 15:46:14 -07002804module_usb_serial_driver(serial_drivers, id_table_combined);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002805
Linus Torvalds1da177e2005-04-16 15:20:36 -07002806MODULE_AUTHOR(DRIVER_AUTHOR);
2807MODULE_DESCRIPTION(DRIVER_DESC);
2808MODULE_LICENSE("GPL");
Jaswinder Singhd12b2192008-07-04 23:06:09 +05302809MODULE_FIRMWARE("edgeport/down3.bin");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002810
Linus Torvalds1da177e2005-04-16 15:20:36 -07002811module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2812MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2813
2814module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
Alan Cox2742fd82008-04-29 14:45:15 +01002815MODULE_PARM_DESC(ignore_cpu_rev,
2816 "Ignore the cpu revision when connecting to a device");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002817
Martin K. Petersenfc4cbd72007-05-22 15:57:04 -04002818module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2819MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");