]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
4 | |
5 | /* | |
6 | * linux/drivers/char/cyclades.c | |
7 | * | |
8 | * This file contains the driver for the Cyclades async multiport | |
9 | * serial boards. | |
10 | * | |
11 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
12 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
1da177e4 | 13 | * |
ebdb5135 | 14 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
15 | * |
16 | * Much of the design and some of the code came from serial.c | |
17 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
18 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
19 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 20 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 | 21 | * |
1da177e4 LT |
22 | */ |
23 | ||
ebdb5135 | 24 | #define CY_VERSION "2.6" |
096dcfce | 25 | |
1da177e4 LT |
26 | /* If you need to install more boards than NR_CARDS, change the constant |
27 | in the definition below. No other change is necessary to support up to | |
28 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
29 | ||
02f1175c | 30 | #define NR_CARDS 4 |
1da177e4 LT |
31 | |
32 | /* | |
33 | If the total number of ports is larger than NR_PORTS, change this | |
34 | constant in the definition below. No other change is necessary to | |
35 | support more boards/ports. */ | |
36 | ||
02f1175c | 37 | #define NR_PORTS 256 |
1da177e4 | 38 | |
1da177e4 LT |
39 | #define ZO_V1 0 |
40 | #define ZO_V2 1 | |
41 | #define ZE_V1 2 | |
42 | ||
43 | #define SERIAL_PARANOIA_CHECK | |
44 | #undef CY_DEBUG_OPEN | |
45 | #undef CY_DEBUG_THROTTLE | |
46 | #undef CY_DEBUG_OTHER | |
47 | #undef CY_DEBUG_IO | |
48 | #undef CY_DEBUG_COUNT | |
49 | #undef CY_DEBUG_DTR | |
50 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
51 | #undef CY_DEBUG_INTERRUPTS | |
52 | #undef CY_16Y_HACK | |
53 | #undef CY_ENABLE_MONITORING | |
54 | #undef CY_PCI_DEBUG | |
55 | ||
1da177e4 | 56 | /* |
15ed6cc0 | 57 | * Include section |
1da177e4 | 58 | */ |
1da177e4 LT |
59 | #include <linux/module.h> |
60 | #include <linux/errno.h> | |
61 | #include <linux/signal.h> | |
62 | #include <linux/sched.h> | |
63 | #include <linux/timer.h> | |
64 | #include <linux/interrupt.h> | |
65 | #include <linux/tty.h> | |
33f0f88f | 66 | #include <linux/tty_flip.h> |
1da177e4 | 67 | #include <linux/serial.h> |
405f5571 | 68 | #include <linux/smp_lock.h> |
1da177e4 LT |
69 | #include <linux/major.h> |
70 | #include <linux/string.h> | |
71 | #include <linux/fcntl.h> | |
72 | #include <linux/ptrace.h> | |
73 | #include <linux/cyclades.h> | |
74 | #include <linux/mm.h> | |
75 | #include <linux/ioport.h> | |
76 | #include <linux/init.h> | |
77 | #include <linux/delay.h> | |
78 | #include <linux/spinlock.h> | |
79 | #include <linux/bitops.h> | |
054f5b0a | 80 | #include <linux/firmware.h> |
9f56fad7 | 81 | #include <linux/device.h> |
1da177e4 | 82 | |
15ed6cc0 | 83 | #include <linux/io.h> |
15ed6cc0 | 84 | #include <linux/uaccess.h> |
1da177e4 | 85 | |
1da177e4 LT |
86 | #include <linux/kernel.h> |
87 | #include <linux/pci.h> | |
88 | ||
89 | #include <linux/stat.h> | |
90 | #include <linux/proc_fs.h> | |
444697d6 | 91 | #include <linux/seq_file.h> |
1da177e4 | 92 | |
02f1175c | 93 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
1da177e4 | 94 | |
1da177e4 LT |
95 | #ifndef SERIAL_XMIT_SIZE |
96 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
97 | #endif | |
1da177e4 LT |
98 | |
99 | #define STD_COM_FLAGS (0) | |
100 | ||
054f5b0a JS |
101 | /* firmware stuff */ |
102 | #define ZL_MAX_BLOCKS 16 | |
103 | #define DRIVER_VERSION 0x02010203 | |
104 | #define RAM_SIZE 0x80000 | |
105 | ||
054f5b0a JS |
106 | enum zblock_type { |
107 | ZBLOCK_PRG = 0, | |
108 | ZBLOCK_FPGA = 1 | |
109 | }; | |
110 | ||
111 | struct zfile_header { | |
112 | char name[64]; | |
113 | char date[32]; | |
114 | char aux[32]; | |
115 | u32 n_config; | |
116 | u32 config_offset; | |
117 | u32 n_blocks; | |
118 | u32 block_offset; | |
119 | u32 reserved[9]; | |
120 | } __attribute__ ((packed)); | |
121 | ||
122 | struct zfile_config { | |
123 | char name[64]; | |
124 | u32 mailbox; | |
125 | u32 function; | |
126 | u32 n_blocks; | |
127 | u32 block_list[ZL_MAX_BLOCKS]; | |
128 | } __attribute__ ((packed)); | |
129 | ||
130 | struct zfile_block { | |
131 | u32 type; | |
132 | u32 file_offset; | |
133 | u32 ram_offset; | |
134 | u32 size; | |
135 | } __attribute__ ((packed)); | |
136 | ||
1da177e4 LT |
137 | static struct tty_driver *cy_serial_driver; |
138 | ||
139 | #ifdef CONFIG_ISA | |
140 | /* This is the address lookup table. The driver will probe for | |
141 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
142 | driver to probe addresses at a different address, add it to | |
143 | this table. If the driver is probing some other board and | |
144 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
145 | */ |
146 | ||
147 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
148 | 0xD0000, |
149 | 0xD2000, | |
150 | 0xD4000, | |
151 | 0xD6000, | |
152 | 0xD8000, | |
153 | 0xDA000, | |
154 | 0xDC000, | |
155 | 0xDE000, | |
156 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 157 | }; |
02f1175c | 158 | |
fe971071 | 159 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 LT |
160 | |
161 | #ifdef MODULE | |
3046d50e JS |
162 | static long maddr[NR_CARDS]; |
163 | static int irq[NR_CARDS]; | |
1da177e4 LT |
164 | |
165 | module_param_array(maddr, long, NULL, 0); | |
166 | module_param_array(irq, int, NULL, 0); | |
167 | #endif | |
168 | ||
02f1175c | 169 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
170 | |
171 | /* This is the per-card data structure containing address, irq, number of | |
172 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
173 | */ | |
174 | static struct cyclades_card cy_card[NR_CARDS]; | |
175 | ||
02f1175c | 176 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 177 | |
1da177e4 LT |
178 | /* |
179 | * This is used to look up the divisor speeds and the timeouts | |
180 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 181 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
182 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
183 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
184 | * HI VHI | |
185 | * 20 | |
186 | */ | |
ebdb5135 | 187 | static const int baud_table[] = { |
02f1175c JS |
188 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
189 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
190 | 230400, 0 | |
191 | }; | |
192 | ||
ebdb5135 | 193 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
194 | /* value => 00 01 02 03 04 */ |
195 | /* divide by 8 32 128 512 2048 */ | |
196 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
197 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
198 | }; | |
199 | ||
ebdb5135 | 200 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
201 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
202 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
203 | }; | |
204 | ||
ebdb5135 | 205 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
206 | /* value => 00 01 02 03 04 */ |
207 | /* divide by 8 32 128 512 2048 */ | |
208 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
209 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
210 | 0x00 | |
211 | }; | |
212 | ||
ebdb5135 | 213 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
214 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
215 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
216 | 0x21 | |
217 | }; | |
218 | ||
ebdb5135 | 219 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
220 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
221 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
222 | 0x07 | |
223 | }; | |
1da177e4 LT |
224 | |
225 | /* | |
226 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
227 | * The cyclades_port structure member rflow and the vector rflow_thr |
228 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
229 | * data loss even when the system interrupt latency is too high. These flags | |
230 | * are to be used only with very special applications. Setting these flags | |
231 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
232 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
233 | * cables. |
234 | */ | |
235 | ||
ebdb5135 | 236 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
237 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
238 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
239 | 0x0a | |
240 | }; | |
1da177e4 LT |
241 | |
242 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
243 | * address order. This look-up table overcomes that problem. | |
244 | */ | |
f0eefdc3 | 245 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
246 | 0x0400, |
247 | 0x0800, | |
248 | 0x0C00, | |
249 | 0x0200, | |
250 | 0x0600, | |
251 | 0x0A00, | |
252 | 0x0E00 | |
253 | }; | |
1da177e4 LT |
254 | |
255 | /* PCI related definitions */ | |
256 | ||
1da177e4 | 257 | #ifdef CONFIG_PCI |
ebdb5135 | 258 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
259 | /* PCI < 1Mb */ |
260 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
261 | /* PCI > 1Mb */ | |
262 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
263 | /* 4Y PCI < 1Mb */ | |
264 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
265 | /* 4Y PCI > 1Mb */ | |
266 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
267 | /* 8Y PCI < 1Mb */ | |
268 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
269 | /* 8Y PCI > 1Mb */ | |
270 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
271 | /* Z PCI < 1Mb */ | |
272 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
273 | /* Z PCI > 1Mb */ | |
274 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 275 | { } /* end of table */ |
02f1175c | 276 | }; |
893de2df | 277 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
278 | #endif |
279 | ||
280 | static void cy_start(struct tty_struct *); | |
d13549f8 | 281 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 282 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
283 | #ifdef CONFIG_ISA |
284 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 285 | #endif /* CONFIG_ISA */ |
1da177e4 | 286 | |
1da177e4 LT |
287 | #ifndef CONFIG_CYZ_INTR |
288 | static void cyz_poll(unsigned long); | |
289 | ||
290 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
291 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
292 | ||
8d06afab | 293 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 294 | |
02f1175c | 295 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
296 | static void cyz_rx_restart(unsigned long); |
297 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 298 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 299 | |
3aeea5b9 JS |
300 | static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
301 | { | |
302 | struct cyclades_card *card = port->card; | |
303 | ||
304 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); | |
305 | } | |
306 | ||
307 | static inline u8 cyy_readb(struct cyclades_port *port, u32 reg) | |
308 | { | |
309 | struct cyclades_card *card = port->card; | |
310 | ||
311 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); | |
312 | } | |
313 | ||
2693f485 JS |
314 | static inline bool cy_is_Z(struct cyclades_card *card) |
315 | { | |
316 | return card->num_chips == (unsigned int)-1; | |
317 | } | |
318 | ||
319 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
320 | { | |
321 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
322 | } | |
323 | ||
324 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
325 | { | |
326 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
327 | } | |
328 | ||
329 | static inline bool cyz_is_loaded(struct cyclades_card *card) | |
330 | { | |
331 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
332 | ||
333 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
334 | readl(&fw_id->signature) == ZFIRM_ID; | |
335 | } | |
336 | ||
02f1175c | 337 | static inline int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 338 | const char *name, const char *routine) |
1da177e4 LT |
339 | { |
340 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 341 | if (!info) { |
21719191 JS |
342 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
343 | "in %s\n", name, routine); | |
02f1175c JS |
344 | return 1; |
345 | } | |
346 | ||
02f1175c | 347 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
348 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
349 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
350 | return 1; |
351 | } | |
1da177e4 | 352 | #endif |
02f1175c | 353 | return 0; |
ebdb5135 | 354 | } |
1da177e4 | 355 | |
1da177e4 LT |
356 | /***********************************************************/ |
357 | /********* Start of block of Cyclom-Y specific code ********/ | |
358 | ||
359 | /* This routine waits up to 1000 micro-seconds for the previous | |
360 | command to the Cirrus chip to complete and then issues the | |
361 | new command. An error is returned if the previous command | |
362 | didn't finish within the time limit. | |
363 | ||
364 | This function is only called from inside spinlock-protected code. | |
365 | */ | |
3aeea5b9 | 366 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
1da177e4 | 367 | { |
3aeea5b9 | 368 | void __iomem *ccr = base_addr + (CyCCR << index); |
ad39c300 | 369 | unsigned int i; |
1da177e4 | 370 | |
02f1175c JS |
371 | /* Check to see that the previous command has completed */ |
372 | for (i = 0; i < 100; i++) { | |
3aeea5b9 | 373 | if (readb(ccr) == 0) |
02f1175c | 374 | break; |
02f1175c | 375 | udelay(10L); |
1da177e4 | 376 | } |
02f1175c JS |
377 | /* if the CCR never cleared, the previous command |
378 | didn't finish within the "reasonable time" */ | |
379 | if (i == 100) | |
096dcfce | 380 | return -1; |
1da177e4 | 381 | |
02f1175c | 382 | /* Issue the new command */ |
3aeea5b9 | 383 | cy_writeb(ccr, cmd); |
1da177e4 | 384 | |
096dcfce | 385 | return 0; |
3aeea5b9 JS |
386 | } |
387 | ||
388 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) | |
389 | { | |
390 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, | |
391 | port->card->bus_index); | |
392 | } | |
1da177e4 LT |
393 | |
394 | #ifdef CONFIG_ISA | |
395 | /* ISA interrupt detection code */ | |
15ed6cc0 | 396 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 397 | { |
02f1175c JS |
398 | int irq; |
399 | unsigned long irqs, flags; | |
400 | int save_xir, save_car; | |
401 | int index = 0; /* IRQ probing is only for ISA */ | |
402 | ||
403 | /* forget possible initially masked and pending IRQ */ | |
404 | irq = probe_irq_off(probe_irq_on()); | |
405 | ||
406 | /* Clear interrupts on the board first */ | |
407 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
408 | /* Cy_ClrIntr is 0x1800 */ | |
409 | ||
410 | irqs = probe_irq_on(); | |
411 | /* Wait ... */ | |
f6e208c1 | 412 | msleep(5); |
02f1175c JS |
413 | |
414 | /* Enable the Tx interrupts on the CD1400 */ | |
415 | local_irq_save(flags); | |
416 | cy_writeb(address + (CyCAR << index), 0); | |
3aeea5b9 | 417 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
02f1175c JS |
418 | |
419 | cy_writeb(address + (CyCAR << index), 0); | |
420 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 421 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
422 | local_irq_restore(flags); |
423 | ||
424 | /* Wait ... */ | |
f6e208c1 | 425 | msleep(5); |
02f1175c JS |
426 | |
427 | /* Check which interrupt is in use */ | |
428 | irq = probe_irq_off(irqs); | |
429 | ||
430 | /* Clean up */ | |
db05c3b1 JS |
431 | save_xir = (u_char) readb(address + (CyTIR << index)); |
432 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
433 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
434 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 435 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
436 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
437 | cy_writeb(address + (CyCAR << index), (save_car)); | |
438 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
439 | /* Cy_ClrIntr is 0x1800 */ | |
440 | ||
441 | return (irq > 0) ? irq : 0; | |
1da177e4 | 442 | } |
02f1175c | 443 | #endif /* CONFIG_ISA */ |
1da177e4 | 444 | |
ce97a097 JS |
445 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
446 | void __iomem *base_addr) | |
e941027f JS |
447 | { |
448 | struct cyclades_port *info; | |
449 | struct tty_struct *tty; | |
65f76a82 | 450 | int len, index = cinfo->bus_index; |
3aeea5b9 | 451 | u8 ivr, save_xir, channel, save_car, data, char_count; |
e941027f | 452 | |
e941027f | 453 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 454 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 455 | #endif |
ce97a097 | 456 | /* determine the channel & change to that context */ |
65f76a82 JS |
457 | save_xir = readb(base_addr + (CyRIR << index)); |
458 | channel = save_xir & CyIRChannel; | |
ce97a097 | 459 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
460 | save_car = cyy_readb(info, CyCAR); |
461 | cyy_writeb(info, CyCAR, save_xir); | |
462 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; | |
ce97a097 | 463 | |
d13549f8 | 464 | tty = tty_port_tty_get(&info->port); |
ce97a097 | 465 | /* if there is nowhere to put the data, discard it */ |
d13549f8 | 466 | if (tty == NULL) { |
3aeea5b9 JS |
467 | if (ivr == CyIVRRxEx) { /* exception */ |
468 | data = cyy_readb(info, CyRDSR); | |
ce97a097 | 469 | } else { /* normal character reception */ |
3aeea5b9 | 470 | char_count = cyy_readb(info, CyRDCR); |
ce97a097 | 471 | while (char_count--) |
3aeea5b9 | 472 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
473 | } |
474 | goto end; | |
475 | } | |
476 | /* there is an open port for this data */ | |
3aeea5b9 JS |
477 | if (ivr == CyIVRRxEx) { /* exception */ |
478 | data = cyy_readb(info, CyRDSR); | |
ce97a097 JS |
479 | |
480 | /* For statistics only */ | |
481 | if (data & CyBREAK) | |
482 | info->icount.brk++; | |
483 | else if (data & CyFRAME) | |
484 | info->icount.frame++; | |
485 | else if (data & CyPARITY) | |
486 | info->icount.parity++; | |
487 | else if (data & CyOVERRUN) | |
488 | info->icount.overrun++; | |
489 | ||
490 | if (data & info->ignore_status_mask) { | |
491 | info->icount.rx++; | |
d13549f8 | 492 | tty_kref_put(tty); |
ce97a097 JS |
493 | return; |
494 | } | |
495 | if (tty_buffer_request_room(tty, 1)) { | |
496 | if (data & info->read_status_mask) { | |
497 | if (data & CyBREAK) { | |
498 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
499 | cyy_readb(info, CyRDSR), |
500 | TTY_BREAK); | |
ce97a097 | 501 | info->icount.rx++; |
77451e53 | 502 | if (info->port.flags & ASYNC_SAK) |
ce97a097 JS |
503 | do_SAK(tty); |
504 | } else if (data & CyFRAME) { | |
15ed6cc0 | 505 | tty_insert_flip_char(tty, |
3aeea5b9 JS |
506 | cyy_readb(info, CyRDSR), |
507 | TTY_FRAME); | |
ce97a097 JS |
508 | info->icount.rx++; |
509 | info->idle_stats.frame_errs++; | |
510 | } else if (data & CyPARITY) { | |
511 | /* Pieces of seven... */ | |
512 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
513 | cyy_readb(info, CyRDSR), |
514 | TTY_PARITY); | |
ce97a097 JS |
515 | info->icount.rx++; |
516 | info->idle_stats.parity_errs++; | |
517 | } else if (data & CyOVERRUN) { | |
518 | tty_insert_flip_char(tty, 0, | |
519 | TTY_OVERRUN); | |
520 | info->icount.rx++; | |
521 | /* If the flip buffer itself is | |
522 | overflowing, we still lose | |
523 | the next incoming character. | |
524 | */ | |
525 | tty_insert_flip_char(tty, | |
3aeea5b9 JS |
526 | cyy_readb(info, CyRDSR), |
527 | TTY_FRAME); | |
02f1175c | 528 | info->icount.rx++; |
02f1175c | 529 | info->idle_stats.overruns++; |
ce97a097 JS |
530 | /* These two conditions may imply */ |
531 | /* a normal read should be done. */ | |
532 | /* } else if(data & CyTIMEOUT) { */ | |
533 | /* } else if(data & CySPECHAR) { */ | |
534 | } else { | |
535 | tty_insert_flip_char(tty, 0, | |
536 | TTY_NORMAL); | |
537 | info->icount.rx++; | |
02f1175c | 538 | } |
ce97a097 JS |
539 | } else { |
540 | tty_insert_flip_char(tty, 0, TTY_NORMAL); | |
541 | info->icount.rx++; | |
542 | } | |
543 | } else { | |
544 | /* there was a software buffer overrun and nothing | |
545 | * could be done about it!!! */ | |
546 | info->icount.buf_overrun++; | |
547 | info->idle_stats.overruns++; | |
548 | } | |
549 | } else { /* normal character reception */ | |
550 | /* load # chars available from the chip */ | |
3aeea5b9 | 551 | char_count = cyy_readb(info, CyRDCR); |
e941027f JS |
552 | |
553 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
554 | ++info->mon.int_count; |
555 | info->mon.char_count += char_count; | |
556 | if (char_count > info->mon.char_max) | |
557 | info->mon.char_max = char_count; | |
558 | info->mon.char_last = char_count; | |
e941027f | 559 | #endif |
ce97a097 JS |
560 | len = tty_buffer_request_room(tty, char_count); |
561 | while (len--) { | |
3aeea5b9 | 562 | data = cyy_readb(info, CyRDSR); |
ce97a097 JS |
563 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
564 | info->idle_stats.recv_bytes++; | |
565 | info->icount.rx++; | |
e941027f | 566 | #ifdef CY_16Y_HACK |
ce97a097 | 567 | udelay(10L); |
e941027f | 568 | #endif |
e941027f | 569 | } |
ce97a097 | 570 | info->idle_stats.recv_idle = jiffies; |
e941027f | 571 | } |
ce97a097 | 572 | tty_schedule_flip(tty); |
d13549f8 | 573 | tty_kref_put(tty); |
ce97a097 JS |
574 | end: |
575 | /* end of service */ | |
3aeea5b9 JS |
576 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
577 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 578 | } |
e941027f | 579 | |
65f76a82 | 580 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
581 | void __iomem *base_addr) |
582 | { | |
583 | struct cyclades_port *info; | |
d13549f8 | 584 | struct tty_struct *tty; |
65f76a82 JS |
585 | int char_count, index = cinfo->bus_index; |
586 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
587 | |
588 | /* Since we only get here when the transmit buffer | |
589 | is empty, we know we can always stuff a dozen | |
590 | characters. */ | |
e941027f | 591 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 592 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
593 | #endif |
594 | ||
ce97a097 | 595 | /* determine the channel & change to that context */ |
65f76a82 JS |
596 | save_xir = readb(base_addr + (CyTIR << index)); |
597 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
598 | save_car = readb(base_addr + (CyCAR << index)); |
599 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
600 | ||
601 | /* validate the port# (as configured and open) */ | |
602 | if (channel + chip * 4 >= cinfo->nports) { | |
603 | cy_writeb(base_addr + (CySRER << index), | |
604 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); | |
605 | goto end; | |
606 | } | |
607 | info = &cinfo->ports[channel + chip * 4]; | |
d13549f8 JS |
608 | tty = tty_port_tty_get(&info->port); |
609 | if (tty == NULL) { | |
3aeea5b9 | 610 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
ce97a097 JS |
611 | goto end; |
612 | } | |
02f1175c | 613 | |
ce97a097 JS |
614 | /* load the on-chip space for outbound data */ |
615 | char_count = info->xmit_fifo_size; | |
02f1175c | 616 | |
ce97a097 JS |
617 | if (info->x_char) { /* send special char */ |
618 | outch = info->x_char; | |
3aeea5b9 | 619 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
620 | char_count--; |
621 | info->icount.tx++; | |
622 | info->x_char = 0; | |
623 | } | |
02f1175c | 624 | |
ce97a097 JS |
625 | if (info->breakon || info->breakoff) { |
626 | if (info->breakon) { | |
3aeea5b9 JS |
627 | cyy_writeb(info, CyTDR, 0); |
628 | cyy_writeb(info, CyTDR, 0x81); | |
ce97a097 JS |
629 | info->breakon = 0; |
630 | char_count -= 2; | |
e941027f | 631 | } |
ce97a097 | 632 | if (info->breakoff) { |
3aeea5b9 JS |
633 | cyy_writeb(info, CyTDR, 0); |
634 | cyy_writeb(info, CyTDR, 0x83); | |
ce97a097 JS |
635 | info->breakoff = 0; |
636 | char_count -= 2; | |
e941027f | 637 | } |
ce97a097 | 638 | } |
02f1175c | 639 | |
ce97a097 JS |
640 | while (char_count-- > 0) { |
641 | if (!info->xmit_cnt) { | |
3aeea5b9 JS |
642 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
643 | cyy_writeb(info, CySRER, | |
644 | cyy_readb(info, CySRER) & ~CyTxMpty); | |
ce97a097 | 645 | } else { |
3aeea5b9 JS |
646 | cyy_writeb(info, CySRER, CyTxMpty | |
647 | (cyy_readb(info, CySRER) & ~CyTxRdy)); | |
02f1175c | 648 | } |
ce97a097 JS |
649 | goto done; |
650 | } | |
77451e53 | 651 | if (info->port.xmit_buf == NULL) { |
3aeea5b9 JS |
652 | cyy_writeb(info, CySRER, |
653 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
654 | goto done; |
655 | } | |
d13549f8 | 656 | if (tty->stopped || tty->hw_stopped) { |
3aeea5b9 JS |
657 | cyy_writeb(info, CySRER, |
658 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
659 | goto done; |
660 | } | |
661 | /* Because the Embedded Transmit Commands have been enabled, | |
662 | * we must check to see if the escape character, NULL, is being | |
663 | * sent. If it is, we must ensure that there is room for it to | |
664 | * be doubled in the output stream. Therefore we no longer | |
665 | * advance the pointer when the character is fetched, but | |
666 | * rather wait until after the check for a NULL output | |
667 | * character. This is necessary because there may not be room | |
668 | * for the two chars needed to send a NULL.) | |
669 | */ | |
77451e53 | 670 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
671 | if (outch) { |
672 | info->xmit_cnt--; | |
673 | info->xmit_tail = (info->xmit_tail + 1) & | |
674 | (SERIAL_XMIT_SIZE - 1); | |
3aeea5b9 | 675 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
676 | info->icount.tx++; |
677 | } else { | |
678 | if (char_count > 1) { | |
02f1175c JS |
679 | info->xmit_cnt--; |
680 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 681 | (SERIAL_XMIT_SIZE - 1); |
3aeea5b9 JS |
682 | cyy_writeb(info, CyTDR, outch); |
683 | cyy_writeb(info, CyTDR, 0); | |
02f1175c | 684 | info->icount.tx++; |
ce97a097 | 685 | char_count--; |
02f1175c | 686 | } |
e941027f | 687 | } |
e941027f JS |
688 | } |
689 | ||
ce97a097 | 690 | done: |
d13549f8 JS |
691 | tty_wakeup(tty); |
692 | tty_kref_put(tty); | |
ce97a097 JS |
693 | end: |
694 | /* end of service */ | |
3aeea5b9 JS |
695 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
696 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 697 | } |
02f1175c | 698 | |
ce97a097 JS |
699 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
700 | void __iomem *base_addr) | |
701 | { | |
702 | struct cyclades_port *info; | |
d13549f8 | 703 | struct tty_struct *tty; |
65f76a82 JS |
704 | int index = cinfo->bus_index; |
705 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
706 | |
707 | /* determine the channel & change to that context */ | |
65f76a82 JS |
708 | save_xir = readb(base_addr + (CyMIR << index)); |
709 | channel = save_xir & CyIRChannel; | |
ce97a097 | 710 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
711 | save_car = cyy_readb(info, CyCAR); |
712 | cyy_writeb(info, CyCAR, save_xir); | |
ce97a097 | 713 | |
3aeea5b9 JS |
714 | mdm_change = cyy_readb(info, CyMISR); |
715 | mdm_status = cyy_readb(info, CyMSVR1); | |
ce97a097 | 716 | |
d13549f8 JS |
717 | tty = tty_port_tty_get(&info->port); |
718 | if (!tty) | |
ce97a097 JS |
719 | goto end; |
720 | ||
721 | if (mdm_change & CyANY_DELTA) { | |
722 | /* For statistics only */ | |
723 | if (mdm_change & CyDCD) | |
724 | info->icount.dcd++; | |
725 | if (mdm_change & CyCTS) | |
726 | info->icount.cts++; | |
727 | if (mdm_change & CyDSR) | |
728 | info->icount.dsr++; | |
729 | if (mdm_change & CyRI) | |
730 | info->icount.rng++; | |
731 | ||
732 | wake_up_interruptible(&info->delta_msr_wait); | |
733 | } | |
734 | ||
77451e53 | 735 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
174e6fe0 JS |
736 | if (mdm_status & CyDCD) |
737 | wake_up_interruptible(&info->port.open_wait); | |
738 | else | |
d13549f8 | 739 | tty_hangup(tty); |
ce97a097 | 740 | } |
77451e53 | 741 | if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { |
d13549f8 | 742 | if (tty->hw_stopped) { |
ce97a097 JS |
743 | if (mdm_status & CyCTS) { |
744 | /* cy_start isn't used | |
745 | because... !!! */ | |
d13549f8 | 746 | tty->hw_stopped = 0; |
3aeea5b9 JS |
747 | cyy_writeb(info, CySRER, |
748 | cyy_readb(info, CySRER) | CyTxRdy); | |
d13549f8 | 749 | tty_wakeup(tty); |
02f1175c | 750 | } |
ce97a097 JS |
751 | } else { |
752 | if (!(mdm_status & CyCTS)) { | |
753 | /* cy_stop isn't used | |
754 | because ... !!! */ | |
d13549f8 | 755 | tty->hw_stopped = 1; |
3aeea5b9 JS |
756 | cyy_writeb(info, CySRER, |
757 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
02f1175c | 758 | } |
e941027f | 759 | } |
e941027f | 760 | } |
ce97a097 JS |
761 | /* if (mdm_change & CyDSR) { |
762 | } | |
763 | if (mdm_change & CyRI) { | |
764 | }*/ | |
d13549f8 | 765 | tty_kref_put(tty); |
ce97a097 JS |
766 | end: |
767 | /* end of service */ | |
3aeea5b9 JS |
768 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
769 | cyy_writeb(info, CyCAR, save_car); | |
e941027f JS |
770 | } |
771 | ||
1da177e4 LT |
772 | /* The real interrupt service routine is called |
773 | whenever the card wants its hand held--chars | |
774 | received, out buffer empty, modem change, etc. | |
775 | */ | |
02f1175c | 776 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 777 | { |
02f1175c | 778 | int status; |
f7429034 | 779 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 780 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 781 | unsigned int chip, too_many, had_work; |
02f1175c | 782 | int index; |
02f1175c | 783 | |
f7429034 | 784 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 785 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
786 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
787 | irq); | |
1da177e4 | 788 | #endif |
02f1175c JS |
789 | return IRQ_NONE; /* spurious interrupt */ |
790 | } | |
791 | ||
792 | card_base_addr = cinfo->base_addr; | |
793 | index = cinfo->bus_index; | |
794 | ||
f1e83c6c JS |
795 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
796 | if (unlikely(card_base_addr == NULL)) | |
797 | return IRQ_HANDLED; | |
798 | ||
02f1175c JS |
799 | /* This loop checks all chips in the card. Make a note whenever |
800 | _any_ chip had some work to do, as this is considered an | |
801 | indication that there will be more to do. Only when no chip | |
802 | has any work does this outermost loop exit. | |
803 | */ | |
804 | do { | |
805 | had_work = 0; | |
806 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
807 | base_addr = cinfo->base_addr + | |
808 | (cy_chip_offset[chip] << index); | |
809 | too_many = 0; | |
db05c3b1 | 810 | while ((status = readb(base_addr + |
02f1175c JS |
811 | (CySVRR << index))) != 0x00) { |
812 | had_work++; | |
813 | /* The purpose of the following test is to ensure that | |
814 | no chip can monopolize the driver. This forces the | |
815 | chips to be checked in a round-robin fashion (after | |
816 | draining each of a bunch (1000) of characters). | |
817 | */ | |
ce97a097 | 818 | if (1000 < too_many++) |
02f1175c | 819 | break; |
1c0a387c | 820 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
821 | if (status & CySRReceive) /* rx intr */ |
822 | cyy_chip_rx(cinfo, chip, base_addr); | |
823 | if (status & CySRTransmit) /* tx intr */ | |
824 | cyy_chip_tx(cinfo, chip, base_addr); | |
825 | if (status & CySRModem) /* modem intr */ | |
826 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 827 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
828 | } |
829 | } | |
830 | } while (had_work); | |
831 | ||
832 | /* clear interrupts */ | |
833 | spin_lock(&cinfo->card_lock); | |
834 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
835 | /* Cy_ClrIntr is 0x1800 */ | |
836 | spin_unlock(&cinfo->card_lock); | |
837 | return IRQ_HANDLED; | |
838 | } /* cyy_interrupt */ | |
1da177e4 | 839 | |
4d768200 JS |
840 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
841 | unsigned int clear) | |
842 | { | |
843 | struct cyclades_card *card = info->card; | |
3aeea5b9 | 844 | int channel = info->line - card->first_line; |
0d348729 | 845 | u32 rts, dtr, msvrr, msvrd; |
4d768200 | 846 | |
4d768200 | 847 | channel &= 0x03; |
4d768200 | 848 | |
0d348729 JS |
849 | if (info->rtsdtr_inv) { |
850 | msvrr = CyMSVR2; | |
851 | msvrd = CyMSVR1; | |
852 | rts = CyDTR; | |
853 | dtr = CyRTS; | |
854 | } else { | |
855 | msvrr = CyMSVR1; | |
856 | msvrd = CyMSVR2; | |
857 | rts = CyRTS; | |
858 | dtr = CyDTR; | |
859 | } | |
4d768200 | 860 | if (set & TIOCM_RTS) { |
3aeea5b9 JS |
861 | cyy_writeb(info, CyCAR, channel); |
862 | cyy_writeb(info, msvrr, rts); | |
4d768200 JS |
863 | } |
864 | if (clear & TIOCM_RTS) { | |
3aeea5b9 JS |
865 | cyy_writeb(info, CyCAR, channel); |
866 | cyy_writeb(info, msvrr, ~rts); | |
4d768200 JS |
867 | } |
868 | if (set & TIOCM_DTR) { | |
3aeea5b9 JS |
869 | cyy_writeb(info, CyCAR, channel); |
870 | cyy_writeb(info, msvrd, dtr); | |
4d768200 JS |
871 | #ifdef CY_DEBUG_DTR |
872 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
873 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
874 | cyy_readb(info, CyMSVR1), |
875 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
876 | #endif |
877 | } | |
878 | if (clear & TIOCM_DTR) { | |
3aeea5b9 JS |
879 | cyy_writeb(info, CyCAR, channel); |
880 | cyy_writeb(info, msvrd, ~dtr); | |
4d768200 JS |
881 | #ifdef CY_DEBUG_DTR |
882 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
883 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
884 | cyy_readb(info, CyMSVR1), |
885 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
886 | #endif |
887 | } | |
888 | } | |
889 | ||
1da177e4 LT |
890 | /***********************************************************/ |
891 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 892 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
893 | /***********************************************************/ |
894 | ||
895 | static int | |
02f1175c | 896 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 897 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 898 | { |
f0eefdc3 | 899 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
900 | unsigned long loc_doorbell; |
901 | ||
97e87f8e | 902 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
903 | if (loc_doorbell) { |
904 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
905 | *channel = readl(&board_ctrl->fwcmd_channel); |
906 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 907 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
908 | return 1; |
909 | } | |
910 | return 0; | |
911 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
912 | |
913 | static int | |
02f1175c | 914 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 915 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 916 | { |
f0eefdc3 | 917 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 918 | __u32 __iomem *pci_doorbell; |
65f76a82 | 919 | unsigned int index; |
02f1175c | 920 | |
2693f485 | 921 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 922 | return -1; |
15ed6cc0 | 923 | |
02f1175c | 924 | index = 0; |
97e87f8e | 925 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 926 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 927 | if (index++ == 1000) |
db05c3b1 | 928 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
929 | udelay(50L); |
930 | } | |
931 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
932 | cy_writel(&board_ctrl->hcmd_param, param); | |
933 | cy_writel(pci_doorbell, (long)cmd); | |
934 | ||
096dcfce | 935 | return 0; |
02f1175c | 936 | } /* cyz_issue_cmd */ |
1da177e4 | 937 | |
f0eefdc3 | 938 | static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 939 | { |
f0eefdc3 | 940 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 941 | struct cyclades_card *cinfo = info->card; |
65f76a82 | 942 | unsigned int char_count; |
02f1175c | 943 | int len; |
1da177e4 | 944 | #ifdef BLOCKMOVE |
ce71b0ff | 945 | unsigned char *buf; |
1da177e4 | 946 | #else |
02f1175c | 947 | char data; |
1da177e4 | 948 | #endif |
ad39c300 | 949 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 950 | |
db05c3b1 JS |
951 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
952 | rx_put = readl(&buf_ctrl->rx_put); | |
953 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
954 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
955 | if (rx_put >= rx_get) |
956 | char_count = rx_put - rx_get; | |
957 | else | |
958 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 959 | |
02f1175c | 960 | if (char_count) { |
1da177e4 | 961 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
962 | info->mon.int_count++; |
963 | info->mon.char_count += char_count; | |
964 | if (char_count > info->mon.char_max) | |
965 | info->mon.char_max = char_count; | |
966 | info->mon.char_last = char_count; | |
1da177e4 | 967 | #endif |
f7429034 | 968 | if (tty == NULL) { |
02f1175c JS |
969 | /* flush received characters */ |
970 | new_rx_get = (new_rx_get + char_count) & | |
971 | (rx_bufsize - 1); | |
972 | info->rflush_count++; | |
973 | } else { | |
1da177e4 | 974 | #ifdef BLOCKMOVE |
02f1175c JS |
975 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
976 | for performance, but because of buffer boundaries, there | |
977 | may be several steps to the operation */ | |
ce71b0ff JS |
978 | while (1) { |
979 | len = tty_prepare_flip_string(tty, &buf, | |
980 | char_count); | |
981 | if (!len) | |
982 | break; | |
983 | ||
984 | len = min_t(unsigned int, min(len, char_count), | |
985 | rx_bufsize - new_rx_get); | |
986 | ||
987 | memcpy_fromio(buf, cinfo->base_addr + | |
988 | rx_bufaddr + new_rx_get, len); | |
989 | ||
990 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 991 | (rx_bufsize - 1); |
ce71b0ff JS |
992 | char_count -= len; |
993 | info->icount.rx += len; | |
994 | info->idle_stats.recv_bytes += len; | |
02f1175c | 995 | } |
1da177e4 | 996 | #else |
02f1175c JS |
997 | len = tty_buffer_request_room(tty, char_count); |
998 | while (len--) { | |
db05c3b1 | 999 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c | 1000 | new_rx_get); |
15ed6cc0 AC |
1001 | new_rx_get = (new_rx_get + 1) & |
1002 | (rx_bufsize - 1); | |
02f1175c JS |
1003 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
1004 | info->idle_stats.recv_bytes++; | |
1005 | info->icount.rx++; | |
1006 | } | |
1da177e4 LT |
1007 | #endif |
1008 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1009 | /* Recalculate the number of chars in the RX buffer and issue |
1010 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1011 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1012 | if (rx_put >= rx_get) |
1013 | char_count = rx_put - rx_get; | |
1014 | else | |
1015 | char_count = rx_put - rx_get + rx_bufsize; | |
65f76a82 | 1016 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
ebafeeff JS |
1017 | !timer_pending(&cyz_rx_full_timer[ |
1018 | info->line])) | |
1019 | mod_timer(&cyz_rx_full_timer[info->line], | |
1020 | jiffies + 1); | |
1da177e4 | 1021 | #endif |
02f1175c JS |
1022 | info->idle_stats.recv_idle = jiffies; |
1023 | tty_schedule_flip(tty); | |
1024 | } | |
1025 | /* Update rx_get */ | |
1026 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1027 | } |
1da177e4 LT |
1028 | } |
1029 | ||
f0eefdc3 | 1030 | static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1031 | { |
f0eefdc3 | 1032 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1033 | struct cyclades_card *cinfo = info->card; |
65f76a82 JS |
1034 | u8 data; |
1035 | unsigned int char_count; | |
1da177e4 | 1036 | #ifdef BLOCKMOVE |
02f1175c | 1037 | int small_count; |
1da177e4 | 1038 | #endif |
ad39c300 | 1039 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1040 | |
02f1175c JS |
1041 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1042 | return; | |
1da177e4 | 1043 | |
db05c3b1 JS |
1044 | tx_get = readl(&buf_ctrl->tx_get); |
1045 | tx_put = readl(&buf_ctrl->tx_put); | |
1046 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1047 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1048 | if (tx_put >= tx_get) |
1049 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1050 | else | |
1051 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1052 | |
02f1175c | 1053 | if (char_count) { |
1da177e4 | 1054 | |
f7429034 | 1055 | if (tty == NULL) |
02f1175c | 1056 | goto ztxdone; |
1da177e4 | 1057 | |
02f1175c JS |
1058 | if (info->x_char) { /* send special char */ |
1059 | data = info->x_char; | |
1da177e4 | 1060 | |
02f1175c JS |
1061 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1062 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1063 | info->x_char = 0; | |
1064 | char_count--; | |
1065 | info->icount.tx++; | |
02f1175c | 1066 | } |
1da177e4 | 1067 | #ifdef BLOCKMOVE |
02f1175c JS |
1068 | while (0 < (small_count = min_t(unsigned int, |
1069 | tx_bufsize - tx_put, min_t(unsigned int, | |
1070 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1071 | min_t(unsigned int, info->xmit_cnt, | |
1072 | char_count))))) { | |
1073 | ||
1074 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1075 | tx_put), | |
77451e53 | 1076 | &info->port.xmit_buf[info->xmit_tail], |
02f1175c JS |
1077 | small_count); |
1078 | ||
1079 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1080 | char_count -= small_count; | |
1081 | info->icount.tx += small_count; | |
1082 | info->xmit_cnt -= small_count; | |
1083 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1084 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1085 | } |
1da177e4 | 1086 | #else |
02f1175c | 1087 | while (info->xmit_cnt && char_count) { |
77451e53 | 1088 | data = info->port.xmit_buf[info->xmit_tail]; |
02f1175c JS |
1089 | info->xmit_cnt--; |
1090 | info->xmit_tail = (info->xmit_tail + 1) & | |
1091 | (SERIAL_XMIT_SIZE - 1); | |
1092 | ||
1093 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1094 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1095 | char_count--; | |
1096 | info->icount.tx++; | |
02f1175c | 1097 | } |
1da177e4 | 1098 | #endif |
ebafeeff | 1099 | tty_wakeup(tty); |
7fa57a0c | 1100 | ztxdone: |
02f1175c JS |
1101 | /* Update tx_put */ |
1102 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1103 | } |
1da177e4 LT |
1104 | } |
1105 | ||
02f1175c | 1106 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1107 | { |
f0eefdc3 | 1108 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
1109 | struct tty_struct *tty; |
1110 | struct cyclades_port *info; | |
101b8159 | 1111 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1112 | __u8 cmd; |
02f1175c JS |
1113 | int special_count; |
1114 | int delta_count; | |
1115 | ||
db05c3b1 | 1116 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1117 | |
1118 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1119 | special_count = 0; | |
1120 | delta_count = 0; | |
dd025c0c | 1121 | info = &cinfo->ports[channel]; |
d13549f8 | 1122 | tty = tty_port_tty_get(&info->port); |
15ed6cc0 | 1123 | if (tty == NULL) |
02f1175c | 1124 | continue; |
f7429034 | 1125 | |
02f1175c JS |
1126 | switch (cmd) { |
1127 | case C_CM_PR_ERROR: | |
1128 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1129 | info->icount.rx++; | |
1130 | special_count++; | |
1131 | break; | |
1132 | case C_CM_FR_ERROR: | |
1133 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1134 | info->icount.rx++; | |
1135 | special_count++; | |
1136 | break; | |
1137 | case C_CM_RXBRK: | |
1138 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1139 | info->icount.rx++; | |
1140 | special_count++; | |
1141 | break; | |
1142 | case C_CM_MDCD: | |
1143 | info->icount.dcd++; | |
1144 | delta_count++; | |
77451e53 | 1145 | if (info->port.flags & ASYNC_CHECK_CD) { |
f0eefdc3 JS |
1146 | u32 dcd = fw_ver > 241 ? param : |
1147 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1148 | if (dcd & C_RS_DCD) |
77451e53 | 1149 | wake_up_interruptible(&info->port.open_wait); |
174e6fe0 | 1150 | else |
d13549f8 | 1151 | tty_hangup(tty); |
02f1175c JS |
1152 | } |
1153 | break; | |
1154 | case C_CM_MCTS: | |
1155 | info->icount.cts++; | |
1156 | delta_count++; | |
1157 | break; | |
1158 | case C_CM_MRI: | |
1159 | info->icount.rng++; | |
1160 | delta_count++; | |
1161 | break; | |
1162 | case C_CM_MDSR: | |
1163 | info->icount.dsr++; | |
1164 | delta_count++; | |
1165 | break; | |
1da177e4 | 1166 | #ifdef Z_WAKE |
02f1175c | 1167 | case C_CM_IOCTLW: |
ebafeeff | 1168 | complete(&info->shutdown_wait); |
02f1175c | 1169 | break; |
1da177e4 LT |
1170 | #endif |
1171 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1172 | case C_CM_RXHIWM: |
1173 | case C_CM_RXNNDT: | |
1174 | case C_CM_INTBACK2: | |
1175 | /* Reception Interrupt */ | |
1da177e4 | 1176 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1177 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1178 | "port %ld\n", info->card, channel); | |
1da177e4 | 1179 | #endif |
f0eefdc3 | 1180 | cyz_handle_rx(info, tty); |
02f1175c JS |
1181 | break; |
1182 | case C_CM_TXBEMPTY: | |
1183 | case C_CM_TXLOWWM: | |
1184 | case C_CM_INTBACK: | |
1185 | /* Transmission Interrupt */ | |
1da177e4 | 1186 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1187 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1188 | "port %ld\n", info->card, channel); | |
1da177e4 | 1189 | #endif |
f0eefdc3 | 1190 | cyz_handle_tx(info, tty); |
02f1175c JS |
1191 | break; |
1192 | #endif /* CONFIG_CYZ_INTR */ | |
1193 | case C_CM_FATAL: | |
1194 | /* should do something with this !!! */ | |
1195 | break; | |
1196 | default: | |
1197 | break; | |
1198 | } | |
1199 | if (delta_count) | |
ebafeeff | 1200 | wake_up_interruptible(&info->delta_msr_wait); |
02f1175c JS |
1201 | if (special_count) |
1202 | tty_schedule_flip(tty); | |
d13549f8 | 1203 | tty_kref_put(tty); |
1da177e4 | 1204 | } |
1da177e4 LT |
1205 | } |
1206 | ||
1207 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1208 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1209 | { |
f7429034 | 1210 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1211 | |
2693f485 | 1212 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1213 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1214 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1215 | "(IRQ%d).\n", irq); | |
1da177e4 | 1216 | #endif |
02f1175c JS |
1217 | return IRQ_NONE; |
1218 | } | |
1da177e4 | 1219 | |
02f1175c JS |
1220 | /* Handle the interrupts */ |
1221 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1222 | |
02f1175c JS |
1223 | return IRQ_HANDLED; |
1224 | } /* cyz_interrupt */ | |
1da177e4 | 1225 | |
02f1175c | 1226 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1227 | { |
02f1175c | 1228 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1229 | struct cyclades_card *card = info->card; |
02f1175c | 1230 | int retval; |
875b206b | 1231 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1232 | unsigned long flags; |
1233 | ||
9fa1b3b1 | 1234 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1235 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1236 | if (retval != 0) { |
21719191 | 1237 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1238 | info->line, retval); |
1239 | } | |
9fa1b3b1 | 1240 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1241 | } |
1242 | ||
02f1175c | 1243 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1244 | |
02f1175c | 1245 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1246 | { |
02f1175c JS |
1247 | struct cyclades_card *cinfo; |
1248 | struct cyclades_port *info; | |
b7050906 | 1249 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1250 | unsigned int port, card; |
1da177e4 | 1251 | |
02f1175c JS |
1252 | for (card = 0; card < NR_CARDS; card++) { |
1253 | cinfo = &cy_card[card]; | |
1254 | ||
2693f485 | 1255 | if (!cy_is_Z(cinfo)) |
02f1175c | 1256 | continue; |
2693f485 | 1257 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1258 | continue; |
1259 | ||
1da177e4 | 1260 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1261 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1262 | cinfo->intr_enabled = 1; |
1263 | continue; | |
1264 | } | |
1da177e4 | 1265 | |
02f1175c | 1266 | cyz_handle_cmd(cinfo); |
1da177e4 | 1267 | |
02f1175c | 1268 | for (port = 0; port < cinfo->nports; port++) { |
d13549f8 JS |
1269 | struct tty_struct *tty; |
1270 | ||
dd025c0c | 1271 | info = &cinfo->ports[port]; |
d13549f8 JS |
1272 | tty = tty_port_tty_get(&info->port); |
1273 | /* OK to pass NULL to the handle functions below. | |
1274 | They need to drop the data in that case. */ | |
1275 | ||
02f1175c | 1276 | if (!info->throttle) |
f0eefdc3 JS |
1277 | cyz_handle_rx(info, tty); |
1278 | cyz_handle_tx(info, tty); | |
d13549f8 | 1279 | tty_kref_put(tty); |
02f1175c JS |
1280 | } |
1281 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1282 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1283 | } |
b7050906 | 1284 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1285 | } /* cyz_poll */ |
1da177e4 | 1286 | |
02f1175c | 1287 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1288 | |
1289 | /********** End of block of Cyclades-Z specific code *********/ | |
1290 | /***********************************************************/ | |
1291 | ||
1da177e4 LT |
1292 | /* This is called whenever a port becomes active; |
1293 | interrupts are enabled and DTR & RTS are turned on. | |
1294 | */ | |
d13549f8 | 1295 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1296 | { |
875b206b | 1297 | struct cyclades_card *card; |
02f1175c JS |
1298 | unsigned long flags; |
1299 | int retval = 0; | |
cc7fdf49 | 1300 | int channel; |
02f1175c | 1301 | unsigned long page; |
1da177e4 | 1302 | |
02f1175c | 1303 | card = info->card; |
875b206b | 1304 | channel = info->line - card->first_line; |
1da177e4 | 1305 | |
02f1175c JS |
1306 | page = get_zeroed_page(GFP_KERNEL); |
1307 | if (!page) | |
1308 | return -ENOMEM; | |
1da177e4 | 1309 | |
9fa1b3b1 | 1310 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1311 | |
cc7fdf49 | 1312 | if (info->port.flags & ASYNC_INITIALIZED) |
02f1175c | 1313 | goto errout; |
1da177e4 | 1314 | |
02f1175c | 1315 | if (!info->type) { |
d13549f8 | 1316 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1317 | goto errout; |
1318 | } | |
1da177e4 | 1319 | |
77451e53 | 1320 | if (info->port.xmit_buf) |
02f1175c JS |
1321 | free_page(page); |
1322 | else | |
77451e53 | 1323 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1324 | |
9fa1b3b1 | 1325 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1326 | |
d13549f8 | 1327 | cy_set_line_char(info, tty); |
1da177e4 | 1328 | |
2693f485 | 1329 | if (!cy_is_Z(card)) { |
02f1175c | 1330 | channel &= 0x03; |
1da177e4 | 1331 | |
9fa1b3b1 | 1332 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1333 | |
3aeea5b9 | 1334 | cyy_writeb(info, CyCAR, channel); |
1da177e4 | 1335 | |
3aeea5b9 | 1336 | cyy_writeb(info, CyRTPR, |
02f1175c JS |
1337 | (info->default_timeout ? info->default_timeout : 0x02)); |
1338 | /* 10ms rx timeout */ | |
1da177e4 | 1339 | |
3aeea5b9 | 1340 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
1da177e4 | 1341 | |
4d768200 | 1342 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1343 | |
3aeea5b9 | 1344 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
02f1175c | 1345 | } else { |
f0eefdc3 | 1346 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1347 | |
2693f485 | 1348 | if (!cyz_is_loaded(card)) |
02f1175c | 1349 | return -ENODEV; |
1da177e4 | 1350 | |
1da177e4 | 1351 | #ifdef CY_DEBUG_OPEN |
21719191 | 1352 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1353 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1354 | #endif |
9fa1b3b1 | 1355 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1356 | |
f0eefdc3 | 1357 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1358 | #ifdef Z_WAKE |
1359 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1360 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1361 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1362 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1363 | #else |
f0eefdc3 | 1364 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1365 | C_IN_IOCTLW | C_IN_MDCD); |
1366 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1367 | #else |
1368 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1369 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1370 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1371 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1372 | #else |
f0eefdc3 | 1373 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1374 | #endif /* CONFIG_CYZ_INTR */ |
1375 | #endif /* Z_WAKE */ | |
1376 | ||
875b206b | 1377 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1378 | if (retval != 0) { |
21719191 JS |
1379 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1380 | "%x\n", info->line, retval); | |
02f1175c | 1381 | } |
1da177e4 | 1382 | |
02f1175c | 1383 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1384 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1385 | if (retval != 0) { |
21719191 JS |
1386 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1387 | "%x\n", info->line, retval); | |
02f1175c | 1388 | } |
1da177e4 | 1389 | |
02f1175c JS |
1390 | /* set timeout !!! */ |
1391 | /* set RTS and DTR !!! */ | |
4d768200 | 1392 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1393 | |
02f1175c | 1394 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1395 | } |
02f1175c | 1396 | |
cc7fdf49 | 1397 | info->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1398 | |
cc7fdf49 JS |
1399 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1400 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1401 | info->breakon = info->breakoff = 0; | |
1402 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1403 | info->idle_stats.in_use = | |
1404 | info->idle_stats.recv_idle = | |
1405 | info->idle_stats.xmit_idle = jiffies; | |
1406 | ||
1407 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1408 | |
1409 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1410 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1411 | #endif |
1412 | return 0; | |
1413 | ||
1414 | errout: | |
9fa1b3b1 | 1415 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1416 | free_page(page); |
1da177e4 | 1417 | return retval; |
02f1175c | 1418 | } /* startup */ |
1da177e4 | 1419 | |
02f1175c | 1420 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1421 | { |
3aeea5b9 | 1422 | struct cyclades_card *card = info->card; |
02f1175c | 1423 | unsigned long flags; |
3aeea5b9 | 1424 | int channel = info->line - card->first_line; |
1da177e4 | 1425 | |
2693f485 | 1426 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1427 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
1428 | cyy_writeb(info, CyCAR, channel & 0x03); |
1429 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 1430 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1431 | } else { |
1da177e4 | 1432 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1433 | int retval; |
1da177e4 | 1434 | |
9fa1b3b1 | 1435 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1436 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1437 | if (retval != 0) { |
21719191 JS |
1438 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1439 | "%x\n", info->line, retval); | |
02f1175c | 1440 | } |
9fa1b3b1 | 1441 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1442 | #else /* CONFIG_CYZ_INTR */ |
1443 | /* Don't have to do anything at this time */ | |
1444 | #endif /* CONFIG_CYZ_INTR */ | |
1445 | } | |
1446 | } /* start_xmit */ | |
1da177e4 LT |
1447 | |
1448 | /* | |
1449 | * This routine shuts down a serial port; interrupts are disabled, | |
1450 | * and DTR is dropped if the hangup on close termio flag is on. | |
1451 | */ | |
d13549f8 | 1452 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1453 | { |
875b206b | 1454 | struct cyclades_card *card; |
02f1175c | 1455 | unsigned long flags; |
3aeea5b9 | 1456 | int channel; |
02f1175c | 1457 | |
77451e53 | 1458 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
02f1175c | 1459 | return; |
02f1175c JS |
1460 | |
1461 | card = info->card; | |
875b206b | 1462 | channel = info->line - card->first_line; |
2693f485 | 1463 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1464 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1465 | |
1466 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
1467 | wake_up_interruptible(&info->delta_msr_wait); | |
1da177e4 | 1468 | |
77451e53 | 1469 | if (info->port.xmit_buf) { |
02f1175c | 1470 | unsigned char *temp; |
77451e53 AC |
1471 | temp = info->port.xmit_buf; |
1472 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1473 | free_page((unsigned long)temp); |
1474 | } | |
4d768200 JS |
1475 | if (tty->termios->c_cflag & HUPCL) |
1476 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); | |
1477 | ||
3aeea5b9 | 1478 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
02f1175c JS |
1479 | /* it may be appropriate to clear _XMIT at |
1480 | some later date (after testing)!!! */ | |
1481 | ||
d13549f8 | 1482 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1483 | info->port.flags &= ~ASYNC_INITIALIZED; |
9fa1b3b1 | 1484 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1485 | } else { |
1da177e4 | 1486 | #ifdef CY_DEBUG_OPEN |
21719191 | 1487 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1488 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1489 | #endif |
1490 | ||
2693f485 | 1491 | if (!cyz_is_loaded(card)) |
02f1175c | 1492 | return; |
1da177e4 | 1493 | |
9fa1b3b1 | 1494 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1495 | |
77451e53 | 1496 | if (info->port.xmit_buf) { |
02f1175c | 1497 | unsigned char *temp; |
77451e53 AC |
1498 | temp = info->port.xmit_buf; |
1499 | info->port.xmit_buf = NULL; | |
02f1175c | 1500 | free_page((unsigned long)temp); |
1da177e4 | 1501 | } |
02f1175c | 1502 | |
4d768200 JS |
1503 | if (tty->termios->c_cflag & HUPCL) |
1504 | tty_port_lower_dtr_rts(&info->port); | |
1da177e4 | 1505 | |
d13549f8 | 1506 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1507 | info->port.flags &= ~ASYNC_INITIALIZED; |
02f1175c | 1508 | |
9fa1b3b1 | 1509 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1510 | } |
1da177e4 LT |
1511 | |
1512 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1513 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1514 | #endif |
02f1175c | 1515 | } /* shutdown */ |
1da177e4 LT |
1516 | |
1517 | /* | |
1518 | * ------------------------------------------------------------ | |
1519 | * cy_open() and friends | |
1520 | * ------------------------------------------------------------ | |
1521 | */ | |
1522 | ||
1da177e4 LT |
1523 | /* |
1524 | * This routine is called whenever a serial port is opened. It | |
1525 | * performs the serial-specific initialization for the tty structure. | |
1526 | */ | |
02f1175c | 1527 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1528 | { |
02f1175c | 1529 | struct cyclades_port *info; |
65f76a82 JS |
1530 | unsigned int i, line; |
1531 | int retval; | |
1da177e4 | 1532 | |
02f1175c | 1533 | line = tty->index; |
15ed6cc0 | 1534 | if (tty->index < 0 || NR_PORTS <= line) |
02f1175c | 1535 | return -ENODEV; |
15ed6cc0 | 1536 | |
dd025c0c JS |
1537 | for (i = 0; i < NR_CARDS; i++) |
1538 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1539 | line >= cy_card[i].first_line) | |
1540 | break; | |
1541 | if (i >= NR_CARDS) | |
1542 | return -ENODEV; | |
1543 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1544 | if (info->line < 0) |
02f1175c | 1545 | return -ENODEV; |
1da177e4 | 1546 | |
02f1175c JS |
1547 | /* If the card's firmware hasn't been loaded, |
1548 | treat it as absent from the system. This | |
1549 | will make the user pay attention. | |
1550 | */ | |
2693f485 | 1551 | if (cy_is_Z(info->card)) { |
875b206b | 1552 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1553 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1554 | ||
2693f485 JS |
1555 | if (!cyz_is_loaded(cinfo)) { |
1556 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1557 | readl(&firm_id->signature) == |
1558 | ZFIRM_HLT) { | |
21719191 JS |
1559 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1560 | "need an external power supply for " | |
1561 | "this number of ports.\nFirmware " | |
1562 | "halted.\n"); | |
02f1175c | 1563 | } else { |
21719191 JS |
1564 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1565 | "yet loaded\n"); | |
02f1175c JS |
1566 | } |
1567 | return -ENODEV; | |
1568 | } | |
1569 | #ifdef CONFIG_CYZ_INTR | |
1570 | else { | |
1571 | /* In case this Z board is operating in interrupt mode, its | |
1572 | interrupts should be enabled as soon as the first open | |
1573 | happens to one of its ports. */ | |
1574 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1575 | u16 intr; |
02f1175c | 1576 | |
02f1175c | 1577 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1578 | intr = readw(&cinfo->ctl_addr.p9060-> |
1579 | intr_ctrl_stat) | 0x0900; | |
1580 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1581 | intr_ctrl_stat, intr); | |
02f1175c JS |
1582 | /* Enable interrupts on the FW */ |
1583 | retval = cyz_issue_cmd(cinfo, 0, | |
1584 | C_CM_IRQ_ENBL, 0L); | |
1585 | if (retval != 0) { | |
21719191 JS |
1586 | printk(KERN_ERR "cyc:IRQ enable retval " |
1587 | "was %x\n", retval); | |
02f1175c | 1588 | } |
02f1175c JS |
1589 | cinfo->intr_enabled = 1; |
1590 | } | |
1da177e4 | 1591 | } |
02f1175c JS |
1592 | #endif /* CONFIG_CYZ_INTR */ |
1593 | /* Make sure this Z port really exists in hardware */ | |
1594 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1595 | return -ENODEV; | |
1da177e4 | 1596 | } |
1da177e4 | 1597 | #ifdef CY_DEBUG_OTHER |
21719191 | 1598 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1599 | #endif |
02f1175c | 1600 | tty->driver_data = info; |
15ed6cc0 | 1601 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1602 | return -ENODEV; |
15ed6cc0 | 1603 | |
1da177e4 | 1604 | #ifdef CY_DEBUG_OPEN |
21719191 | 1605 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1606 | info->port.count); |
1da177e4 | 1607 | #endif |
77451e53 | 1608 | info->port.count++; |
1da177e4 | 1609 | #ifdef CY_DEBUG_COUNT |
21719191 | 1610 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1611 | current->pid, info->port.count); |
1da177e4 | 1612 | #endif |
1da177e4 | 1613 | |
02f1175c JS |
1614 | /* |
1615 | * If the port is the middle of closing, bail out now | |
1616 | */ | |
77451e53 AC |
1617 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
1618 | wait_event_interruptible(info->port.close_wait, | |
1619 | !(info->port.flags & ASYNC_CLOSING)); | |
1620 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; | |
02f1175c | 1621 | } |
1da177e4 | 1622 | |
02f1175c JS |
1623 | /* |
1624 | * Start up serial port | |
1625 | */ | |
d13549f8 | 1626 | retval = cy_startup(info, tty); |
15ed6cc0 | 1627 | if (retval) |
02f1175c | 1628 | return retval; |
1da177e4 | 1629 | |
f0737579 | 1630 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1631 | if (retval) { |
1da177e4 | 1632 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1633 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1634 | "with %d\n", retval); | |
1da177e4 | 1635 | #endif |
02f1175c JS |
1636 | return retval; |
1637 | } | |
1da177e4 | 1638 | |
02f1175c | 1639 | info->throttle = 0; |
d13549f8 | 1640 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1641 | |
02f1175c | 1642 | #ifdef CY_DEBUG_OPEN |
21719191 | 1643 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1644 | #endif |
1645 | return 0; | |
1646 | } /* cy_open */ | |
1da177e4 LT |
1647 | |
1648 | /* | |
1649 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1650 | */ | |
02f1175c | 1651 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1652 | { |
875b206b | 1653 | struct cyclades_card *card; |
cab9bdd1 | 1654 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1655 | unsigned long orig_jiffies; |
1656 | int char_time; | |
1657 | ||
1658 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1659 | return; | |
1660 | ||
1661 | if (info->xmit_fifo_size == 0) | |
1662 | return; /* Just in case.... */ | |
1da177e4 | 1663 | |
02f1175c | 1664 | orig_jiffies = jiffies; |
978e595f | 1665 | lock_kernel(); |
02f1175c JS |
1666 | /* |
1667 | * Set the check interval to be 1/5 of the estimated time to | |
1668 | * send a single character, and make it at least 1. The check | |
1669 | * interval should also be less than the timeout. | |
1670 | * | |
1671 | * Note: we have to use pretty tight timings here to satisfy | |
1672 | * the NIST-PCTS. | |
1673 | */ | |
1674 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1675 | char_time = char_time / 5; | |
1676 | if (char_time <= 0) | |
1677 | char_time = 1; | |
1678 | if (timeout < 0) | |
1679 | timeout = 0; | |
1680 | if (timeout) | |
1681 | char_time = min(char_time, timeout); | |
1682 | /* | |
1683 | * If the transmitter hasn't cleared in twice the approximate | |
1684 | * amount of time to send the entire FIFO, it probably won't | |
1685 | * ever clear. This assumes the UART isn't doing flow | |
1686 | * control, which is currently the case. Hence, if it ever | |
1687 | * takes longer than info->timeout, this is probably due to a | |
1688 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1689 | * 2*info->timeout. | |
1690 | */ | |
1691 | if (!timeout || timeout > 2 * info->timeout) | |
1692 | timeout = 2 * info->timeout; | |
1da177e4 | 1693 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
1694 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
1695 | timeout, char_time, jiffies); | |
1da177e4 | 1696 | #endif |
02f1175c | 1697 | card = info->card; |
2693f485 | 1698 | if (!cy_is_Z(card)) { |
3aeea5b9 | 1699 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
1da177e4 | 1700 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1701 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 1702 | #endif |
02f1175c JS |
1703 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1704 | break; | |
1705 | if (timeout && time_after(jiffies, orig_jiffies + | |
1706 | timeout)) | |
1707 | break; | |
1708 | } | |
1da177e4 | 1709 | } |
02f1175c JS |
1710 | /* Run one more char cycle */ |
1711 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
978e595f | 1712 | unlock_kernel(); |
1da177e4 | 1713 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1714 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
1715 | #endif |
1716 | } | |
1717 | ||
978e595f AC |
1718 | static void cy_flush_buffer(struct tty_struct *tty) |
1719 | { | |
1720 | struct cyclades_port *info = tty->driver_data; | |
1721 | struct cyclades_card *card; | |
1722 | int channel, retval; | |
1723 | unsigned long flags; | |
1724 | ||
1725 | #ifdef CY_DEBUG_IO | |
1726 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1727 | #endif | |
1728 | ||
1729 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1730 | return; | |
1731 | ||
1732 | card = info->card; | |
1733 | channel = info->line - card->first_line; | |
1734 | ||
1735 | spin_lock_irqsave(&card->card_lock, flags); | |
1736 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1737 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1738 | ||
2693f485 | 1739 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1740 | buffers as well */ |
1741 | spin_lock_irqsave(&card->card_lock, flags); | |
1742 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1743 | if (retval != 0) { | |
1744 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1745 | "was %x\n", info->line, retval); | |
1746 | } | |
1747 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1748 | } | |
1749 | tty_wakeup(tty); | |
1750 | } /* cy_flush_buffer */ | |
1751 | ||
1752 | ||
1da177e4 LT |
1753 | /* |
1754 | * This routine is called when a particular tty device is closed. | |
1755 | */ | |
02f1175c | 1756 | static void cy_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1757 | { |
cab9bdd1 | 1758 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 1759 | struct cyclades_card *card; |
02f1175c | 1760 | unsigned long flags; |
3aeea5b9 | 1761 | int channel; |
1da177e4 | 1762 | |
15ed6cc0 | 1763 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) |
02f1175c | 1764 | return; |
1da177e4 | 1765 | |
9fa1b3b1 JS |
1766 | card = info->card; |
1767 | ||
23342262 | 1768 | if (!tty_port_close_start(&info->port, tty, filp)) |
02f1175c | 1769 | return; |
15ed6cc0 | 1770 | |
3aeea5b9 | 1771 | channel = info->line - card->first_line; |
9fa1b3b1 | 1772 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1773 | |
2693f485 | 1774 | if (!cy_is_Z(card)) { |
02f1175c | 1775 | /* Stop accepting input */ |
3aeea5b9 JS |
1776 | cyy_writeb(info, CyCAR, channel & 0x03); |
1777 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); | |
77451e53 | 1778 | if (info->port.flags & ASYNC_INITIALIZED) { |
15ed6cc0 AC |
1779 | /* Waiting for on-board buffers to be empty before |
1780 | closing the port */ | |
9fa1b3b1 | 1781 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1782 | cy_wait_until_sent(tty, info->timeout); |
9fa1b3b1 | 1783 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1784 | } |
1785 | } else { | |
1786 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1787 | /* Waiting for on-board buffers to be empty before closing |
1788 | the port */ | |
f0eefdc3 | 1789 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
1790 | int retval; |
1791 | ||
f0eefdc3 | 1792 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1793 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1794 | if (retval != 0) { |
21719191 JS |
1795 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1796 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1797 | } |
9fa1b3b1 | 1798 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1799 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1800 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1801 | } |
1da177e4 | 1802 | #endif |
02f1175c JS |
1803 | } |
1804 | ||
9fa1b3b1 | 1805 | spin_unlock_irqrestore(&card->card_lock, flags); |
d13549f8 | 1806 | cy_shutdown(info, tty); |
978e595f | 1807 | cy_flush_buffer(tty); |
02f1175c | 1808 | |
d13549f8 | 1809 | tty_port_tty_set(&info->port, NULL); |
1da177e4 | 1810 | |
23342262 | 1811 | tty_port_close_end(&info->port, tty); |
02f1175c | 1812 | } /* cy_close */ |
1da177e4 LT |
1813 | |
1814 | /* This routine gets called when tty_write has put something into | |
1815 | * the write_queue. The characters may come from user space or | |
1816 | * kernel space. | |
1817 | * | |
1818 | * This routine will return the number of characters actually | |
1819 | * accepted for writing. | |
1820 | * | |
1821 | * If the port is not already transmitting stuff, start it off by | |
1822 | * enabling interrupts. The interrupt service routine will then | |
1823 | * ensure that the characters are sent. | |
1824 | * If the port is already active, there is no need to kick it. | |
1825 | * | |
1826 | */ | |
02f1175c | 1827 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1828 | { |
cab9bdd1 | 1829 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1830 | unsigned long flags; |
1831 | int c, ret = 0; | |
1da177e4 LT |
1832 | |
1833 | #ifdef CY_DEBUG_IO | |
21719191 | 1834 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1835 | #endif |
1836 | ||
15ed6cc0 | 1837 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1838 | return 0; |
1da177e4 | 1839 | |
77451e53 | 1840 | if (!info->port.xmit_buf) |
02f1175c | 1841 | return 0; |
1da177e4 | 1842 | |
9fa1b3b1 | 1843 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1844 | while (1) { |
1a4e2351 HH |
1845 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1846 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1847 | |
1848 | if (c <= 0) | |
1849 | break; | |
1850 | ||
77451e53 | 1851 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1852 | info->xmit_head = (info->xmit_head + c) & |
1853 | (SERIAL_XMIT_SIZE - 1); | |
1854 | info->xmit_cnt += c; | |
1855 | buf += c; | |
1856 | count -= c; | |
1857 | ret += c; | |
1858 | } | |
9fa1b3b1 | 1859 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1860 | |
1861 | info->idle_stats.xmit_bytes += ret; | |
1862 | info->idle_stats.xmit_idle = jiffies; | |
1863 | ||
15ed6cc0 | 1864 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1865 | start_xmit(info); |
15ed6cc0 | 1866 | |
02f1175c JS |
1867 | return ret; |
1868 | } /* cy_write */ | |
1da177e4 LT |
1869 | |
1870 | /* | |
1871 | * This routine is called by the kernel to write a single | |
1872 | * character to the tty device. If the kernel uses this routine, | |
1873 | * it must call the flush_chars() routine (if defined) when it is | |
1874 | * done stuffing characters into the driver. If there is no room | |
1875 | * in the queue, the character is ignored. | |
1876 | */ | |
76b25a55 | 1877 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1878 | { |
cab9bdd1 | 1879 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1880 | unsigned long flags; |
1da177e4 LT |
1881 | |
1882 | #ifdef CY_DEBUG_IO | |
21719191 | 1883 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1884 | #endif |
1885 | ||
02f1175c | 1886 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1887 | return 0; |
1da177e4 | 1888 | |
77451e53 | 1889 | if (!info->port.xmit_buf) |
76b25a55 | 1890 | return 0; |
1da177e4 | 1891 | |
9fa1b3b1 | 1892 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1893 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1894 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1895 | return 0; |
02f1175c | 1896 | } |
1da177e4 | 1897 | |
77451e53 | 1898 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1899 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1900 | info->xmit_cnt++; | |
1da177e4 LT |
1901 | info->idle_stats.xmit_bytes++; |
1902 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1903 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1904 | return 1; |
02f1175c | 1905 | } /* cy_put_char */ |
1da177e4 LT |
1906 | |
1907 | /* | |
1908 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1909 | * series of characters to the tty device using put_char(). |
1da177e4 | 1910 | */ |
02f1175c | 1911 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1912 | { |
cab9bdd1 | 1913 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1914 | |
1da177e4 | 1915 | #ifdef CY_DEBUG_IO |
21719191 | 1916 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1917 | #endif |
1918 | ||
02f1175c JS |
1919 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1920 | return; | |
1da177e4 | 1921 | |
02f1175c | 1922 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1923 | !info->port.xmit_buf) |
02f1175c | 1924 | return; |
1da177e4 | 1925 | |
02f1175c JS |
1926 | start_xmit(info); |
1927 | } /* cy_flush_chars */ | |
1da177e4 LT |
1928 | |
1929 | /* | |
1930 | * This routine returns the numbers of characters the tty driver | |
1931 | * will accept for queuing to be written. This number is subject | |
1932 | * to change as output buffers get emptied, or if the output flow | |
1933 | * control is activated. | |
1934 | */ | |
02f1175c | 1935 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1936 | { |
cab9bdd1 | 1937 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1938 | int ret; |
1939 | ||
1da177e4 | 1940 | #ifdef CY_DEBUG_IO |
21719191 | 1941 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1942 | #endif |
1943 | ||
02f1175c JS |
1944 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1945 | return 0; | |
1946 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1947 | if (ret < 0) | |
1948 | ret = 0; | |
1949 | return ret; | |
1950 | } /* cy_write_room */ | |
1da177e4 | 1951 | |
02f1175c | 1952 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1953 | { |
cab9bdd1 | 1954 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1955 | |
02f1175c JS |
1956 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1957 | return 0; | |
1958 | ||
1da177e4 | 1959 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 1960 | if (!cy_is_Z(info->card)) { |
02f1175c | 1961 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 1962 | #ifdef CY_DEBUG_IO |
21719191 JS |
1963 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1964 | info->line, info->xmit_cnt); | |
1da177e4 | 1965 | #endif |
02f1175c | 1966 | return info->xmit_cnt; |
1da177e4 | 1967 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 1968 | } else { |
f0eefdc3 | 1969 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 1970 | int char_count; |
ad39c300 | 1971 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 1972 | |
978e595f | 1973 | lock_kernel(); |
db05c3b1 JS |
1974 | tx_get = readl(&buf_ctrl->tx_get); |
1975 | tx_put = readl(&buf_ctrl->tx_put); | |
1976 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
1977 | if (tx_put >= tx_get) |
1978 | char_count = tx_put - tx_get; | |
1979 | else | |
1980 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 1981 | #ifdef CY_DEBUG_IO |
21719191 JS |
1982 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1983 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 1984 | #endif |
978e595f | 1985 | unlock_kernel(); |
096dcfce | 1986 | return info->xmit_cnt + char_count; |
02f1175c JS |
1987 | } |
1988 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1989 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
1990 | |
1991 | /* | |
1992 | * ------------------------------------------------------------ | |
1993 | * cy_ioctl() and friends | |
1994 | * ------------------------------------------------------------ | |
1995 | */ | |
1996 | ||
1a86b5e3 | 1997 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 1998 | { |
02f1175c | 1999 | int co, co_val, bpr; |
1a86b5e3 | 2000 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 2001 | 25000000); |
1da177e4 | 2002 | |
02f1175c JS |
2003 | if (baud == 0) { |
2004 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
2005 | return; | |
2006 | } | |
1da177e4 | 2007 | |
02f1175c JS |
2008 | /* determine which prescaler to use */ |
2009 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
2010 | if (cy_clock / co_val / baud > 63) | |
2011 | break; | |
2012 | } | |
1da177e4 | 2013 | |
02f1175c JS |
2014 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
2015 | if (bpr > 255) | |
2016 | bpr = 255; | |
1da177e4 | 2017 | |
02f1175c JS |
2018 | info->tbpr = info->rbpr = bpr; |
2019 | info->tco = info->rco = co; | |
1da177e4 LT |
2020 | } |
2021 | ||
2022 | /* | |
2023 | * This routine finds or computes the various line characteristics. | |
2024 | * It used to be called config_setup | |
2025 | */ | |
d13549f8 | 2026 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 2027 | { |
875b206b | 2028 | struct cyclades_card *card; |
02f1175c | 2029 | unsigned long flags; |
3aeea5b9 | 2030 | int channel; |
02f1175c | 2031 | unsigned cflag, iflag; |
02f1175c JS |
2032 | int baud, baud_rate = 0; |
2033 | int i; | |
2034 | ||
d13549f8 | 2035 | if (!tty->termios) /* XXX can this happen at all? */ |
02f1175c | 2036 | return; |
15ed6cc0 AC |
2037 | |
2038 | if (info->line == -1) | |
02f1175c | 2039 | return; |
15ed6cc0 | 2040 | |
d13549f8 JS |
2041 | cflag = tty->termios->c_cflag; |
2042 | iflag = tty->termios->c_iflag; | |
1da177e4 | 2043 | |
02f1175c JS |
2044 | /* |
2045 | * Set up the tty->alt_speed kludge | |
2046 | */ | |
d13549f8 JS |
2047 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
2048 | tty->alt_speed = 57600; | |
2049 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2050 | tty->alt_speed = 115200; | |
2051 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2052 | tty->alt_speed = 230400; | |
2053 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2054 | tty->alt_speed = 460800; | |
02f1175c JS |
2055 | |
2056 | card = info->card; | |
875b206b | 2057 | channel = info->line - card->first_line; |
02f1175c | 2058 | |
2693f485 | 2059 | if (!cy_is_Z(card)) { |
46fb7825 JS |
2060 | u32 cflags; |
2061 | ||
02f1175c | 2062 | /* baud rate */ |
d13549f8 | 2063 | baud = tty_get_baud_rate(tty); |
77451e53 | 2064 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2065 | ASYNC_SPD_CUST) { |
2066 | if (info->custom_divisor) | |
2067 | baud_rate = info->baud / info->custom_divisor; | |
2068 | else | |
2069 | baud_rate = info->baud; | |
2070 | } else if (baud > CD1400_MAX_SPEED) { | |
2071 | baud = CD1400_MAX_SPEED; | |
2072 | } | |
2073 | /* find the baud index */ | |
2074 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 2075 | if (baud == baud_table[i]) |
02f1175c | 2076 | break; |
02f1175c | 2077 | } |
15ed6cc0 | 2078 | if (i == 20) |
02f1175c | 2079 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2080 | |
77451e53 | 2081 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2082 | ASYNC_SPD_CUST) { |
2083 | cyy_baud_calc(info, baud_rate); | |
2084 | } else { | |
2085 | if (info->chip_rev >= CD1400_REV_J) { | |
2086 | /* It is a CD1400 rev. J or later */ | |
2087 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2088 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2089 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2090 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2091 | } else { | |
2092 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2093 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2094 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2095 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2096 | } | |
2097 | } | |
2098 | if (baud_table[i] == 134) { | |
2099 | /* get it right for 134.5 baud */ | |
2100 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2101 | 2; | |
77451e53 | 2102 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2103 | ASYNC_SPD_CUST) { |
2104 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2105 | baud_rate) + 2; | |
2106 | } else if (baud_table[i]) { | |
2107 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2108 | baud_table[i]) + 2; | |
2109 | /* this needs to be propagated into the card info */ | |
2110 | } else { | |
2111 | info->timeout = 0; | |
2112 | } | |
2113 | /* By tradition (is it a standard?) a baud rate of zero | |
2114 | implies the line should be/has been closed. A bit | |
2115 | later in this routine such a test is performed. */ | |
2116 | ||
2117 | /* byte size and parity */ | |
2118 | info->cor5 = 0; | |
2119 | info->cor4 = 0; | |
2120 | /* receive threshold */ | |
2121 | info->cor3 = (info->default_threshold ? | |
2122 | info->default_threshold : baud_cor3[i]); | |
2123 | info->cor2 = CyETC; | |
2124 | switch (cflag & CSIZE) { | |
2125 | case CS5: | |
2126 | info->cor1 = Cy_5_BITS; | |
2127 | break; | |
2128 | case CS6: | |
2129 | info->cor1 = Cy_6_BITS; | |
2130 | break; | |
2131 | case CS7: | |
2132 | info->cor1 = Cy_7_BITS; | |
2133 | break; | |
2134 | case CS8: | |
2135 | info->cor1 = Cy_8_BITS; | |
2136 | break; | |
2137 | } | |
15ed6cc0 | 2138 | if (cflag & CSTOPB) |
02f1175c | 2139 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2140 | |
02f1175c | 2141 | if (cflag & PARENB) { |
15ed6cc0 | 2142 | if (cflag & PARODD) |
02f1175c | 2143 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2144 | else |
02f1175c | 2145 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2146 | } else |
02f1175c | 2147 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2148 | |
2149 | /* CTS flow control flag */ | |
2150 | if (cflag & CRTSCTS) { | |
77451e53 | 2151 | info->port.flags |= ASYNC_CTS_FLOW; |
02f1175c JS |
2152 | info->cor2 |= CyCtsAE; |
2153 | } else { | |
77451e53 | 2154 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2155 | info->cor2 &= ~CyCtsAE; |
2156 | } | |
2157 | if (cflag & CLOCAL) | |
77451e53 | 2158 | info->port.flags &= ~ASYNC_CHECK_CD; |
02f1175c | 2159 | else |
77451e53 | 2160 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2161 | |
2162 | /*********************************************** | |
2163 | The hardware option, CyRtsAO, presents RTS when | |
2164 | the chip has characters to send. Since most modems | |
2165 | use RTS as reverse (inbound) flow control, this | |
2166 | option is not used. If inbound flow control is | |
2167 | necessary, DTR can be programmed to provide the | |
2168 | appropriate signals for use with a non-standard | |
2169 | cable. Contact Marcio Saito for details. | |
2170 | ***********************************************/ | |
2171 | ||
02f1175c | 2172 | channel &= 0x03; |
1da177e4 | 2173 | |
9fa1b3b1 | 2174 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2175 | cyy_writeb(info, CyCAR, channel); |
02f1175c JS |
2176 | |
2177 | /* tx and rx baud rate */ | |
2178 | ||
3aeea5b9 JS |
2179 | cyy_writeb(info, CyTCOR, info->tco); |
2180 | cyy_writeb(info, CyTBPR, info->tbpr); | |
2181 | cyy_writeb(info, CyRCOR, info->rco); | |
2182 | cyy_writeb(info, CyRBPR, info->rbpr); | |
02f1175c JS |
2183 | |
2184 | /* set line characteristics according configuration */ | |
2185 | ||
3aeea5b9 JS |
2186 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
2187 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); | |
2188 | cyy_writeb(info, CyCOR1, info->cor1); | |
2189 | cyy_writeb(info, CyCOR2, info->cor2); | |
2190 | cyy_writeb(info, CyCOR3, info->cor3); | |
2191 | cyy_writeb(info, CyCOR4, info->cor4); | |
2192 | cyy_writeb(info, CyCOR5, info->cor5); | |
02f1175c | 2193 | |
3aeea5b9 JS |
2194 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
2195 | CyCOR3ch); | |
02f1175c | 2196 | |
15ed6cc0 | 2197 | /* !!! Is this needed? */ |
3aeea5b9 JS |
2198 | cyy_writeb(info, CyCAR, channel); |
2199 | cyy_writeb(info, CyRTPR, | |
02f1175c JS |
2200 | (info->default_timeout ? info->default_timeout : 0x02)); |
2201 | /* 10ms rx timeout */ | |
2202 | ||
46fb7825 JS |
2203 | cflags = CyCTS; |
2204 | if (!C_CLOCAL(tty)) | |
2205 | cflags |= CyDSR | CyRI | CyDCD; | |
2206 | /* without modem intr */ | |
2207 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); | |
2208 | /* act on 1->0 modem transitions */ | |
2209 | if ((cflag & CRTSCTS) && info->rflow) | |
2210 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); | |
2211 | else | |
2212 | cyy_writeb(info, CyMCOR1, cflags); | |
2213 | /* act on 0->1 modem transitions */ | |
2214 | cyy_writeb(info, CyMCOR2, cflags); | |
02f1175c | 2215 | |
4d768200 JS |
2216 | if (i == 0) /* baud rate is zero, turn off line */ |
2217 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2218 | else | |
2219 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2220 | |
d13549f8 | 2221 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2222 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2223 | |
1da177e4 | 2224 | } else { |
f0eefdc3 | 2225 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2226 | __u32 sw_flow; |
02f1175c | 2227 | int retval; |
1da177e4 | 2228 | |
2693f485 | 2229 | if (!cyz_is_loaded(card)) |
02f1175c | 2230 | return; |
1da177e4 | 2231 | |
02f1175c | 2232 | /* baud rate */ |
d13549f8 | 2233 | baud = tty_get_baud_rate(tty); |
77451e53 | 2234 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2235 | ASYNC_SPD_CUST) { |
2236 | if (info->custom_divisor) | |
2237 | baud_rate = info->baud / info->custom_divisor; | |
2238 | else | |
2239 | baud_rate = info->baud; | |
2240 | } else if (baud > CYZ_MAX_SPEED) { | |
2241 | baud = CYZ_MAX_SPEED; | |
2242 | } | |
2243 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2244 | ||
2245 | if (baud == 134) { | |
2246 | /* get it right for 134.5 baud */ | |
2247 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2248 | 2; | |
77451e53 | 2249 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2250 | ASYNC_SPD_CUST) { |
2251 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2252 | baud_rate) + 2; | |
2253 | } else if (baud) { | |
2254 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2255 | baud) + 2; | |
2256 | /* this needs to be propagated into the card info */ | |
2257 | } else { | |
2258 | info->timeout = 0; | |
2259 | } | |
1da177e4 | 2260 | |
02f1175c JS |
2261 | /* byte size and parity */ |
2262 | switch (cflag & CSIZE) { | |
2263 | case CS5: | |
2264 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2265 | break; | |
2266 | case CS6: | |
2267 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2268 | break; | |
2269 | case CS7: | |
2270 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2271 | break; | |
2272 | case CS8: | |
2273 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2274 | break; | |
2275 | } | |
2276 | if (cflag & CSTOPB) { | |
2277 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2278 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2279 | } else { |
2280 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2281 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2282 | } |
2283 | if (cflag & PARENB) { | |
15ed6cc0 | 2284 | if (cflag & PARODD) |
02f1175c | 2285 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2286 | else |
02f1175c | 2287 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2288 | } else |
02f1175c | 2289 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2290 | |
02f1175c JS |
2291 | /* CTS flow control flag */ |
2292 | if (cflag & CRTSCTS) { | |
2293 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2294 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2295 | } else { |
db05c3b1 JS |
2296 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2297 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2298 | } |
2299 | /* As the HW flow control is done in firmware, the driver | |
2300 | doesn't need to care about it */ | |
77451e53 | 2301 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2302 | |
2303 | /* XON/XOFF/XANY flow control flags */ | |
2304 | sw_flow = 0; | |
2305 | if (iflag & IXON) { | |
2306 | sw_flow |= C_FL_OXX; | |
2307 | if (iflag & IXANY) | |
2308 | sw_flow |= C_FL_OIXANY; | |
2309 | } | |
2310 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2311 | ||
875b206b | 2312 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2313 | if (retval != 0) { |
21719191 JS |
2314 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2315 | "was %x\n", info->line, retval); | |
02f1175c JS |
2316 | } |
2317 | ||
2318 | /* CD sensitivity */ | |
15ed6cc0 | 2319 | if (cflag & CLOCAL) |
77451e53 | 2320 | info->port.flags &= ~ASYNC_CHECK_CD; |
15ed6cc0 | 2321 | else |
77451e53 | 2322 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 2323 | |
02f1175c JS |
2324 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2325 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2326 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2327 | #ifdef CY_DEBUG_DTR |
21719191 | 2328 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2329 | #endif |
02f1175c JS |
2330 | } else { |
2331 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2332 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2333 | #ifdef CY_DEBUG_DTR |
21719191 | 2334 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2335 | #endif |
02f1175c | 2336 | } |
1da177e4 | 2337 | |
15ed6cc0 | 2338 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2339 | if (retval != 0) { |
21719191 JS |
2340 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2341 | "was %x\n", info->line, retval); | |
02f1175c | 2342 | } |
1da177e4 | 2343 | |
d13549f8 | 2344 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2345 | } |
02f1175c | 2346 | } /* set_line_char */ |
1da177e4 | 2347 | |
6c28181c | 2348 | static int cy_get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 2349 | struct serial_struct __user *retinfo) |
1da177e4 | 2350 | { |
875b206b | 2351 | struct cyclades_card *cinfo = info->card; |
6c28181c JS |
2352 | struct serial_struct tmp = { |
2353 | .type = info->type, | |
2354 | .line = info->line, | |
2355 | .port = (info->card - cy_card) * 0x100 + info->line - | |
2356 | cinfo->first_line, | |
2357 | .irq = cinfo->irq, | |
2358 | .flags = info->port.flags, | |
2359 | .close_delay = info->port.close_delay, | |
2360 | .closing_wait = info->port.closing_wait, | |
2361 | .baud_base = info->baud, | |
2362 | .custom_divisor = info->custom_divisor, | |
2363 | .hub6 = 0, /*!!! */ | |
2364 | }; | |
02f1175c | 2365 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
6c28181c | 2366 | } |
1da177e4 LT |
2367 | |
2368 | static int | |
d13549f8 | 2369 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
15ed6cc0 | 2370 | struct serial_struct __user *new_info) |
1da177e4 | 2371 | { |
02f1175c | 2372 | struct serial_struct new_serial; |
02f1175c JS |
2373 | |
2374 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2375 | return -EFAULT; | |
02f1175c JS |
2376 | |
2377 | if (!capable(CAP_SYS_ADMIN)) { | |
44b7d1b3 | 2378 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
2379 | new_serial.baud_base != info->baud || |
2380 | (new_serial.flags & ASYNC_FLAGS & | |
2381 | ~ASYNC_USR_MASK) != | |
77451e53 | 2382 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
02f1175c | 2383 | return -EPERM; |
77451e53 | 2384 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
2385 | (new_serial.flags & ASYNC_USR_MASK); |
2386 | info->baud = new_serial.baud_base; | |
2387 | info->custom_divisor = new_serial.custom_divisor; | |
2388 | goto check_and_exit; | |
2389 | } | |
2390 | ||
2391 | /* | |
2392 | * OK, past this point, all the error checking has been done. | |
2393 | * At this point, we start making changes..... | |
2394 | */ | |
2395 | ||
2396 | info->baud = new_serial.baud_base; | |
2397 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 2398 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 2399 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
2400 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
2401 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
2402 | |
2403 | check_and_exit: | |
77451e53 | 2404 | if (info->port.flags & ASYNC_INITIALIZED) { |
d13549f8 | 2405 | cy_set_line_char(info, tty); |
02f1175c JS |
2406 | return 0; |
2407 | } else { | |
d13549f8 | 2408 | return cy_startup(info, tty); |
02f1175c JS |
2409 | } |
2410 | } /* set_serial_info */ | |
1da177e4 LT |
2411 | |
2412 | /* | |
2413 | * get_lsr_info - get line status register info | |
2414 | * | |
2415 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2416 | * is emptied. On bus types like RS485, the transmitter must | |
2417 | * release the bus after transmitting. This must be done when | |
2418 | * the transmit shift register is empty, not be done when the | |
2419 | * transmit holding register is empty. This functionality | |
2420 | * allows an RS485 driver to be written in user space. | |
2421 | */ | |
15ed6cc0 | 2422 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2423 | { |
3aeea5b9 | 2424 | struct cyclades_card *card = info->card; |
02f1175c JS |
2425 | unsigned int result; |
2426 | unsigned long flags; | |
3aeea5b9 | 2427 | u8 status; |
1da177e4 | 2428 | |
2693f485 | 2429 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2430 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2431 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2432 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2433 | result = (status ? 0 : TIOCSER_TEMT); |
2434 | } else { | |
2435 | /* Not supported yet */ | |
2436 | return -EINVAL; | |
2437 | } | |
2438 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
2439 | } |
2440 | ||
02f1175c | 2441 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 2442 | { |
cab9bdd1 | 2443 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2444 | struct cyclades_card *card; |
3aeea5b9 | 2445 | int result; |
02f1175c | 2446 | |
bf9d8929 | 2447 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2448 | return -ENODEV; |
1da177e4 | 2449 | |
02f1175c | 2450 | card = info->card; |
0d348729 JS |
2451 | |
2452 | lock_kernel(); | |
2693f485 | 2453 | if (!cy_is_Z(card)) { |
0d348729 | 2454 | unsigned long flags; |
3aeea5b9 JS |
2455 | int channel = info->line - card->first_line; |
2456 | u8 status; | |
1da177e4 | 2457 | |
9fa1b3b1 | 2458 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2459 | cyy_writeb(info, CyCAR, channel & 0x03); |
2460 | status = cyy_readb(info, CyMSVR1); | |
2461 | status |= cyy_readb(info, CyMSVR2); | |
9fa1b3b1 | 2462 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2463 | |
2464 | if (info->rtsdtr_inv) { | |
2465 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2466 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2467 | } else { | |
2468 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2469 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2470 | } | |
2471 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2472 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2473 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2474 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2475 | } else { |
0d348729 JS |
2476 | u32 lstatus; |
2477 | ||
2478 | if (!cyz_is_loaded(card)) { | |
2479 | result = -ENODEV; | |
2480 | goto end; | |
02f1175c | 2481 | } |
1da177e4 | 2482 | |
0d348729 JS |
2483 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
2484 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | | |
2485 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2486 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2487 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2488 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2489 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
02f1175c | 2490 | } |
0d348729 | 2491 | end: |
7b130c0e | 2492 | unlock_kernel(); |
02f1175c JS |
2493 | return result; |
2494 | } /* cy_tiomget */ | |
1da177e4 LT |
2495 | |
2496 | static int | |
2497 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
02f1175c | 2498 | unsigned int set, unsigned int clear) |
1da177e4 | 2499 | { |
cab9bdd1 | 2500 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2501 | struct cyclades_card *card; |
02f1175c | 2502 | unsigned long flags; |
02f1175c | 2503 | |
bf9d8929 | 2504 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2505 | return -ENODEV; |
2506 | ||
2507 | card = info->card; | |
2693f485 | 2508 | if (!cy_is_Z(card)) { |
4d768200 JS |
2509 | spin_lock_irqsave(&card->card_lock, flags); |
2510 | cyy_change_rts_dtr(info, set, clear); | |
2511 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2512 | } else { |
0d348729 JS |
2513 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
2514 | int retval, channel = info->line - card->first_line; | |
2515 | u32 rs; | |
2516 | ||
2517 | if (!cyz_is_loaded(card)) | |
2518 | return -ENODEV; | |
2519 | ||
2520 | spin_lock_irqsave(&card->card_lock, flags); | |
2521 | rs = readl(&ch_ctrl->rs_control); | |
2522 | if (set & TIOCM_RTS) | |
2523 | rs |= C_RS_RTS; | |
2524 | if (clear & TIOCM_RTS) | |
2525 | rs &= ~C_RS_RTS; | |
2526 | if (set & TIOCM_DTR) { | |
2527 | rs |= C_RS_DTR; | |
1da177e4 | 2528 | #ifdef CY_DEBUG_DTR |
0d348729 | 2529 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
1da177e4 | 2530 | #endif |
0d348729 JS |
2531 | } |
2532 | if (clear & TIOCM_DTR) { | |
2533 | rs &= ~C_RS_DTR; | |
1da177e4 | 2534 | #ifdef CY_DEBUG_DTR |
0d348729 JS |
2535 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2536 | "Z DTR\n"); | |
1da177e4 | 2537 | #endif |
02f1175c | 2538 | } |
0d348729 | 2539 | cy_writel(&ch_ctrl->rs_control, rs); |
9fa1b3b1 | 2540 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
0d348729 | 2541 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2542 | if (retval != 0) { |
21719191 JS |
2543 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2544 | "was %x\n", info->line, retval); | |
02f1175c | 2545 | } |
1da177e4 | 2546 | } |
02f1175c | 2547 | return 0; |
0d348729 | 2548 | } |
1da177e4 LT |
2549 | |
2550 | /* | |
2551 | * cy_break() --- routine which turns the break handling on or off | |
2552 | */ | |
9e98966c | 2553 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2554 | { |
cab9bdd1 | 2555 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2556 | struct cyclades_card *card; |
02f1175c | 2557 | unsigned long flags; |
9e98966c | 2558 | int retval = 0; |
1da177e4 | 2559 | |
02f1175c | 2560 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2561 | return -EINVAL; |
1da177e4 | 2562 | |
9fa1b3b1 JS |
2563 | card = info->card; |
2564 | ||
2565 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2566 | if (!cy_is_Z(card)) { |
02f1175c JS |
2567 | /* Let the transmit ISR take care of this (since it |
2568 | requires stuffing characters into the output stream). | |
2569 | */ | |
2570 | if (break_state == -1) { | |
2571 | if (!info->breakon) { | |
2572 | info->breakon = 1; | |
2573 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2574 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2575 | start_xmit(info); |
9fa1b3b1 | 2576 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2577 | } |
2578 | } | |
2579 | } else { | |
2580 | if (!info->breakoff) { | |
2581 | info->breakoff = 1; | |
2582 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2583 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2584 | start_xmit(info); |
9fa1b3b1 | 2585 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2586 | } |
2587 | } | |
1da177e4 | 2588 | } |
1da177e4 | 2589 | } else { |
02f1175c | 2590 | if (break_state == -1) { |
9fa1b3b1 JS |
2591 | retval = cyz_issue_cmd(card, |
2592 | info->line - card->first_line, | |
02f1175c JS |
2593 | C_CM_SET_BREAK, 0L); |
2594 | if (retval != 0) { | |
21719191 JS |
2595 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2596 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2597 | } |
2598 | } else { | |
9fa1b3b1 JS |
2599 | retval = cyz_issue_cmd(card, |
2600 | info->line - card->first_line, | |
02f1175c JS |
2601 | C_CM_CLR_BREAK, 0L); |
2602 | if (retval != 0) { | |
21719191 JS |
2603 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2604 | "on ttyC%d was %x\n", info->line, | |
2605 | retval); | |
02f1175c | 2606 | } |
1da177e4 | 2607 | } |
1da177e4 | 2608 | } |
9fa1b3b1 | 2609 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2610 | return retval; |
02f1175c | 2611 | } /* cy_break */ |
1da177e4 | 2612 | |
02f1175c | 2613 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2614 | { |
3aeea5b9 | 2615 | struct cyclades_card *card = info->card; |
02f1175c | 2616 | unsigned long flags; |
1da177e4 | 2617 | |
2693f485 | 2618 | if (!cy_is_Z(card)) { |
02f1175c JS |
2619 | info->cor3 &= ~CyREC_FIFO; |
2620 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2621 | |
9fa1b3b1 | 2622 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2623 | cyy_writeb(info, CyCOR3, info->cor3); |
2624 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); | |
9fa1b3b1 | 2625 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2626 | } |
2627 | return 0; | |
2628 | } /* set_threshold */ | |
1da177e4 | 2629 | |
15ed6cc0 AC |
2630 | static int get_threshold(struct cyclades_port *info, |
2631 | unsigned long __user *value) | |
1da177e4 | 2632 | { |
3aeea5b9 | 2633 | struct cyclades_card *card = info->card; |
1da177e4 | 2634 | |
2693f485 | 2635 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2636 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
02f1175c | 2637 | return put_user(tmp, value); |
02f1175c | 2638 | } |
f7429034 | 2639 | return 0; |
02f1175c | 2640 | } /* get_threshold */ |
1da177e4 | 2641 | |
02f1175c | 2642 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2643 | { |
3aeea5b9 | 2644 | struct cyclades_card *card = info->card; |
02f1175c | 2645 | unsigned long flags; |
1da177e4 | 2646 | |
2693f485 | 2647 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2648 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2649 | cyy_writeb(info, CyRTPR, value & 0xff); |
9fa1b3b1 | 2650 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2651 | } |
2652 | return 0; | |
2653 | } /* set_timeout */ | |
1da177e4 | 2654 | |
15ed6cc0 AC |
2655 | static int get_timeout(struct cyclades_port *info, |
2656 | unsigned long __user *value) | |
1da177e4 | 2657 | { |
3aeea5b9 | 2658 | struct cyclades_card *card = info->card; |
1da177e4 | 2659 | |
2693f485 | 2660 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2661 | u8 tmp = cyy_readb(info, CyRTPR); |
02f1175c | 2662 | return put_user(tmp, value); |
02f1175c | 2663 | } |
f7429034 | 2664 | return 0; |
02f1175c | 2665 | } /* get_timeout */ |
1da177e4 | 2666 | |
6c28181c JS |
2667 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2668 | struct cyclades_icount *cprev) | |
1da177e4 | 2669 | { |
6c28181c JS |
2670 | struct cyclades_icount cnow; |
2671 | unsigned long flags; | |
2672 | int ret; | |
1da177e4 | 2673 | |
6c28181c JS |
2674 | spin_lock_irqsave(&info->card->card_lock, flags); |
2675 | cnow = info->icount; /* atomic copy */ | |
2676 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2677 | ||
2678 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2679 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2680 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2681 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2682 | ||
2683 | *cprev = cnow; | |
2684 | ||
2685 | return ret; | |
2686 | } | |
1da177e4 LT |
2687 | |
2688 | /* | |
2689 | * This routine allows the tty driver to implement device- | |
2690 | * specific ioctl's. If the ioctl number passed in cmd is | |
2691 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2692 | */ | |
2693 | static int | |
02f1175c JS |
2694 | cy_ioctl(struct tty_struct *tty, struct file *file, |
2695 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 2696 | { |
cab9bdd1 | 2697 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2698 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2699 | int ret_val = 0; |
2700 | unsigned long flags; | |
2701 | void __user *argp = (void __user *)arg; | |
2702 | ||
2703 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2704 | return -ENODEV; | |
1da177e4 LT |
2705 | |
2706 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2707 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2708 | info->line, cmd, arg); | |
1da177e4 | 2709 | #endif |
7b130c0e | 2710 | lock_kernel(); |
1da177e4 | 2711 | |
02f1175c JS |
2712 | switch (cmd) { |
2713 | case CYGETMON: | |
6c28181c JS |
2714 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2715 | ret_val = -EFAULT; | |
2716 | break; | |
2717 | } | |
2718 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2719 | break; |
2720 | case CYGETTHRESH: | |
2721 | ret_val = get_threshold(info, argp); | |
2722 | break; | |
2723 | case CYSETTHRESH: | |
2724 | ret_val = set_threshold(info, arg); | |
2725 | break; | |
2726 | case CYGETDEFTHRESH: | |
6c28181c JS |
2727 | ret_val = put_user(info->default_threshold, |
2728 | (unsigned long __user *)argp); | |
02f1175c JS |
2729 | break; |
2730 | case CYSETDEFTHRESH: | |
6c28181c | 2731 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2732 | break; |
2733 | case CYGETTIMEOUT: | |
2734 | ret_val = get_timeout(info, argp); | |
2735 | break; | |
2736 | case CYSETTIMEOUT: | |
2737 | ret_val = set_timeout(info, arg); | |
2738 | break; | |
2739 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2740 | ret_val = put_user(info->default_timeout, |
2741 | (unsigned long __user *)argp); | |
02f1175c JS |
2742 | break; |
2743 | case CYSETDEFTIMEOUT: | |
6c28181c | 2744 | info->default_timeout = arg & 0xff; |
02f1175c | 2745 | break; |
1da177e4 | 2746 | case CYSETRFLOW: |
02f1175c | 2747 | info->rflow = (int)arg; |
02f1175c | 2748 | break; |
1da177e4 | 2749 | case CYGETRFLOW: |
02f1175c JS |
2750 | ret_val = info->rflow; |
2751 | break; | |
1da177e4 | 2752 | case CYSETRTSDTR_INV: |
02f1175c | 2753 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2754 | break; |
1da177e4 | 2755 | case CYGETRTSDTR_INV: |
02f1175c JS |
2756 | ret_val = info->rtsdtr_inv; |
2757 | break; | |
1da177e4 | 2758 | case CYGETCD1400VER: |
02f1175c JS |
2759 | ret_val = info->chip_rev; |
2760 | break; | |
1da177e4 LT |
2761 | #ifndef CONFIG_CYZ_INTR |
2762 | case CYZSETPOLLCYCLE: | |
02f1175c | 2763 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2764 | break; |
1da177e4 | 2765 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2766 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2767 | break; | |
2768 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2769 | case CYSETWAIT: |
44b7d1b3 | 2770 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2771 | break; |
1da177e4 | 2772 | case CYGETWAIT: |
44b7d1b3 | 2773 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
2774 | break; |
2775 | case TIOCGSERIAL: | |
6c28181c | 2776 | ret_val = cy_get_serial_info(info, argp); |
02f1175c JS |
2777 | break; |
2778 | case TIOCSSERIAL: | |
d13549f8 | 2779 | ret_val = cy_set_serial_info(info, tty, argp); |
02f1175c JS |
2780 | break; |
2781 | case TIOCSERGETLSR: /* Get line status register */ | |
2782 | ret_val = get_lsr_info(info, argp); | |
2783 | break; | |
2784 | /* | |
2785 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2786 | * - mask passed in arg for lines of interest | |
2787 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2788 | * Caller should use TIOCGICOUNT to see which one it was | |
2789 | */ | |
1da177e4 | 2790 | case TIOCMIWAIT: |
9fa1b3b1 | 2791 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2792 | /* note the counters on entry */ |
2c7fea99 | 2793 | cnow = info->icount; |
9fa1b3b1 | 2794 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
6c28181c JS |
2795 | ret_val = wait_event_interruptible(info->delta_msr_wait, |
2796 | cy_cflags_changed(info, arg, &cnow)); | |
2c7fea99 | 2797 | break; |
1da177e4 | 2798 | |
02f1175c JS |
2799 | /* |
2800 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2801 | * Return: write counters to the user passed counter struct | |
2802 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2803 | * RI where only 0->1 is counted. | |
2804 | */ | |
6c28181c JS |
2805 | case TIOCGICOUNT: { |
2806 | struct serial_icounter_struct sic = { }; | |
2807 | ||
9fa1b3b1 | 2808 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2809 | cnow = info->icount; |
9fa1b3b1 | 2810 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
6c28181c JS |
2811 | |
2812 | sic.cts = cnow.cts; | |
2813 | sic.dsr = cnow.dsr; | |
2814 | sic.rng = cnow.rng; | |
2815 | sic.dcd = cnow.dcd; | |
2816 | sic.rx = cnow.rx; | |
2817 | sic.tx = cnow.tx; | |
2818 | sic.frame = cnow.frame; | |
2819 | sic.overrun = cnow.overrun; | |
2820 | sic.parity = cnow.parity; | |
2821 | sic.brk = cnow.brk; | |
2822 | sic.buf_overrun = cnow.buf_overrun; | |
2823 | ||
2824 | if (copy_to_user(argp, &sic, sizeof(sic))) | |
2825 | ret_val = -EFAULT; | |
02f1175c | 2826 | break; |
6c28181c | 2827 | } |
02f1175c JS |
2828 | default: |
2829 | ret_val = -ENOIOCTLCMD; | |
2830 | } | |
7b130c0e | 2831 | unlock_kernel(); |
1da177e4 LT |
2832 | |
2833 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2834 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2835 | #endif |
02f1175c JS |
2836 | return ret_val; |
2837 | } /* cy_ioctl */ | |
1da177e4 LT |
2838 | |
2839 | /* | |
2840 | * This routine allows the tty driver to be notified when | |
2841 | * device's termios settings have changed. Note that a | |
2842 | * well-designed tty driver should be prepared to accept the case | |
2843 | * where old == NULL, and try to do something rational. | |
2844 | */ | |
02f1175c | 2845 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2846 | { |
cab9bdd1 | 2847 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2848 | |
2849 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2850 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2851 | #endif |
2852 | ||
d13549f8 | 2853 | cy_set_line_char(info, tty); |
02f1175c JS |
2854 | |
2855 | if ((old_termios->c_cflag & CRTSCTS) && | |
2856 | !(tty->termios->c_cflag & CRTSCTS)) { | |
2857 | tty->hw_stopped = 0; | |
2858 | cy_start(tty); | |
2859 | } | |
1da177e4 | 2860 | #if 0 |
02f1175c JS |
2861 | /* |
2862 | * No need to wake up processes in open wait, since they | |
2863 | * sample the CLOCAL flag once, and don't recheck it. | |
2864 | * XXX It's not clear whether the current behavior is correct | |
2865 | * or not. Hence, this may change..... | |
2866 | */ | |
2867 | if (!(old_termios->c_cflag & CLOCAL) && | |
2868 | (tty->termios->c_cflag & CLOCAL)) | |
77451e53 | 2869 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 2870 | #endif |
02f1175c | 2871 | } /* cy_set_termios */ |
1da177e4 LT |
2872 | |
2873 | /* This function is used to send a high-priority XON/XOFF character to | |
2874 | the device. | |
2875 | */ | |
02f1175c | 2876 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 2877 | { |
cab9bdd1 | 2878 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2879 | struct cyclades_card *card; |
2880 | int channel; | |
1da177e4 | 2881 | |
02f1175c | 2882 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
2883 | return; |
2884 | ||
02f1175c | 2885 | info->x_char = ch; |
1da177e4 LT |
2886 | |
2887 | if (ch) | |
02f1175c | 2888 | cy_start(tty); |
1da177e4 LT |
2889 | |
2890 | card = info->card; | |
875b206b | 2891 | channel = info->line - card->first_line; |
1da177e4 | 2892 | |
2693f485 | 2893 | if (cy_is_Z(card)) { |
02f1175c | 2894 | if (ch == STOP_CHAR(tty)) |
875b206b | 2895 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 2896 | else if (ch == START_CHAR(tty)) |
875b206b | 2897 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
2898 | } |
2899 | } | |
2900 | ||
2901 | /* This routine is called by the upper-layer tty layer to signal | |
2902 | that incoming characters should be throttled because the input | |
2903 | buffers are close to full. | |
2904 | */ | |
02f1175c | 2905 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 2906 | { |
cab9bdd1 | 2907 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2908 | struct cyclades_card *card; |
02f1175c | 2909 | unsigned long flags; |
1da177e4 LT |
2910 | |
2911 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 2912 | char buf[64]; |
1da177e4 | 2913 | |
21719191 | 2914 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 2915 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
2916 | #endif |
2917 | ||
15ed6cc0 | 2918 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 2919 | return; |
02f1175c JS |
2920 | |
2921 | card = info->card; | |
2922 | ||
2923 | if (I_IXOFF(tty)) { | |
2693f485 | 2924 | if (!cy_is_Z(card)) |
02f1175c JS |
2925 | cy_send_xchar(tty, STOP_CHAR(tty)); |
2926 | else | |
2927 | info->throttle = 1; | |
2928 | } | |
1da177e4 | 2929 | |
02f1175c | 2930 | if (tty->termios->c_cflag & CRTSCTS) { |
2693f485 | 2931 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2932 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2933 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 2934 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2935 | } else { |
2936 | info->throttle = 1; | |
2937 | } | |
2938 | } | |
02f1175c | 2939 | } /* cy_throttle */ |
1da177e4 LT |
2940 | |
2941 | /* | |
2942 | * This routine notifies the tty driver that it should signal | |
2943 | * that characters can now be sent to the tty without fear of | |
2944 | * overrunning the input buffers of the line disciplines. | |
2945 | */ | |
02f1175c | 2946 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 2947 | { |
cab9bdd1 | 2948 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2949 | struct cyclades_card *card; |
02f1175c | 2950 | unsigned long flags; |
1da177e4 LT |
2951 | |
2952 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
2953 | char buf[64]; |
2954 | ||
21719191 | 2955 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
15ed6cc0 | 2956 | tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); |
1da177e4 LT |
2957 | #endif |
2958 | ||
15ed6cc0 | 2959 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 2960 | return; |
1da177e4 | 2961 | |
02f1175c JS |
2962 | if (I_IXOFF(tty)) { |
2963 | if (info->x_char) | |
2964 | info->x_char = 0; | |
2965 | else | |
2966 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 2967 | } |
1da177e4 | 2968 | |
02f1175c JS |
2969 | if (tty->termios->c_cflag & CRTSCTS) { |
2970 | card = info->card; | |
2693f485 | 2971 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2972 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2973 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 2974 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2975 | } else { |
2976 | info->throttle = 0; | |
2977 | } | |
2978 | } | |
02f1175c | 2979 | } /* cy_unthrottle */ |
1da177e4 LT |
2980 | |
2981 | /* cy_start and cy_stop provide software output flow control as a | |
2982 | function of XON/XOFF, software CTS, and other such stuff. | |
2983 | */ | |
02f1175c | 2984 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 2985 | { |
02f1175c | 2986 | struct cyclades_card *cinfo; |
cab9bdd1 | 2987 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2988 | int channel; |
02f1175c | 2989 | unsigned long flags; |
1da177e4 LT |
2990 | |
2991 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2992 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
2993 | #endif |
2994 | ||
02f1175c JS |
2995 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
2996 | return; | |
1da177e4 | 2997 | |
875b206b | 2998 | cinfo = info->card; |
02f1175c | 2999 | channel = info->line - cinfo->first_line; |
2693f485 | 3000 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 3001 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3002 | cyy_writeb(info, CyCAR, channel & 0x03); |
3003 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); | |
9fa1b3b1 | 3004 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 3005 | } |
02f1175c | 3006 | } /* cy_stop */ |
1da177e4 | 3007 | |
02f1175c | 3008 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 3009 | { |
02f1175c | 3010 | struct cyclades_card *cinfo; |
cab9bdd1 | 3011 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 3012 | int channel; |
02f1175c | 3013 | unsigned long flags; |
1da177e4 LT |
3014 | |
3015 | #ifdef CY_DEBUG_OTHER | |
21719191 | 3016 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
3017 | #endif |
3018 | ||
02f1175c JS |
3019 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
3020 | return; | |
1da177e4 | 3021 | |
875b206b | 3022 | cinfo = info->card; |
02f1175c | 3023 | channel = info->line - cinfo->first_line; |
2693f485 | 3024 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 3025 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3026 | cyy_writeb(info, CyCAR, channel & 0x03); |
3027 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 3028 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 3029 | } |
02f1175c | 3030 | } /* cy_start */ |
1da177e4 | 3031 | |
1da177e4 LT |
3032 | /* |
3033 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
3034 | */ | |
02f1175c | 3035 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 3036 | { |
cab9bdd1 | 3037 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 3038 | |
1da177e4 | 3039 | #ifdef CY_DEBUG_OTHER |
21719191 | 3040 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
3041 | #endif |
3042 | ||
02f1175c JS |
3043 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
3044 | return; | |
1da177e4 | 3045 | |
02f1175c | 3046 | cy_flush_buffer(tty); |
d13549f8 | 3047 | cy_shutdown(info, tty); |
174e6fe0 | 3048 | tty_port_hangup(&info->port); |
02f1175c | 3049 | } /* cy_hangup */ |
1da177e4 | 3050 | |
f0737579 JS |
3051 | static int cyy_carrier_raised(struct tty_port *port) |
3052 | { | |
3053 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3054 | port); | |
3055 | struct cyclades_card *cinfo = info->card; | |
f0737579 JS |
3056 | unsigned long flags; |
3057 | int channel = info->line - cinfo->first_line; | |
f0737579 JS |
3058 | u32 cd; |
3059 | ||
f0737579 | 3060 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3061 | cyy_writeb(info, CyCAR, channel & 0x03); |
3062 | cd = cyy_readb(info, CyMSVR1) & CyDCD; | |
f0737579 JS |
3063 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3064 | ||
3065 | return cd; | |
3066 | } | |
3067 | ||
3068 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
3069 | { | |
3070 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3071 | port); | |
3072 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 3073 | unsigned long flags; |
f0737579 JS |
3074 | |
3075 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
3076 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
3077 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
3078 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3079 | } | |
3080 | ||
3081 | static int cyz_carrier_raised(struct tty_port *port) | |
3082 | { | |
3083 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3084 | port); | |
f0737579 | 3085 | |
f0eefdc3 | 3086 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3087 | } |
3088 | ||
3089 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3090 | { | |
3091 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3092 | port); | |
3093 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3094 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3095 | int ret, channel = info->line - cinfo->first_line; |
3096 | u32 rs; | |
3097 | ||
f0eefdc3 | 3098 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3099 | if (raise) |
3100 | rs |= C_RS_RTS | C_RS_DTR; | |
3101 | else | |
3102 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3103 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3104 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3105 | if (ret != 0) | |
3106 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3107 | __func__, info->line, ret); | |
3108 | #ifdef CY_DEBUG_DTR | |
3109 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3110 | #endif | |
3111 | } | |
3112 | ||
3113 | static const struct tty_port_operations cyy_port_ops = { | |
3114 | .carrier_raised = cyy_carrier_raised, | |
3115 | .dtr_rts = cyy_dtr_rts, | |
3116 | }; | |
3117 | ||
3118 | static const struct tty_port_operations cyz_port_ops = { | |
3119 | .carrier_raised = cyz_carrier_raised, | |
3120 | .dtr_rts = cyz_dtr_rts, | |
3121 | }; | |
3122 | ||
1da177e4 LT |
3123 | /* |
3124 | * --------------------------------------------------------------------- | |
3125 | * cy_init() and friends | |
3126 | * | |
3127 | * cy_init() is called at boot-time to initialize the serial driver. | |
3128 | * --------------------------------------------------------------------- | |
3129 | */ | |
3130 | ||
dd025c0c | 3131 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3132 | { |
3133 | struct cyclades_port *info; | |
f0eefdc3 | 3134 | unsigned int channel, port; |
0809e267 | 3135 | |
3046d50e | 3136 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3137 | cinfo->intr_enabled = 0; |
3046d50e | 3138 | |
963118ee JS |
3139 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3140 | GFP_KERNEL); | |
dd025c0c JS |
3141 | if (cinfo->ports == NULL) { |
3142 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3143 | return -ENOMEM; | |
3144 | } | |
3145 | ||
f0eefdc3 JS |
3146 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3147 | channel++, port++) { | |
3148 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3149 | tty_port_init(&info->port); |
3046d50e | 3150 | info->magic = CYCLADES_MAGIC; |
875b206b | 3151 | info->card = cinfo; |
3046d50e | 3152 | info->line = port; |
3046d50e | 3153 | |
44b7d1b3 AC |
3154 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3155 | info->port.close_delay = 5 * HZ / 10; | |
77451e53 | 3156 | info->port.flags = STD_COM_FLAGS; |
2c7fea99 | 3157 | init_completion(&info->shutdown_wait); |
3046d50e JS |
3158 | init_waitqueue_head(&info->delta_msr_wait); |
3159 | ||
2693f485 | 3160 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3161 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3162 | struct ZFW_CTRL *zfw_ctrl; | |
3163 | ||
f0737579 | 3164 | info->port.ops = &cyz_port_ops; |
0809e267 | 3165 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3166 | |
3167 | zfw_ctrl = cinfo->base_addr + | |
3168 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3169 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3170 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3171 | ||
101b8159 | 3172 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3173 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3174 | else | |
3046d50e | 3175 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3176 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
3177 | setup_timer(&cyz_rx_full_timer[port], |
3178 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 3179 | #endif |
3046d50e | 3180 | } else { |
f0eefdc3 | 3181 | unsigned short chip_number; |
963118ee | 3182 | int index = cinfo->bus_index; |
f0eefdc3 | 3183 | |
f0737579 | 3184 | info->port.ops = &cyy_port_ops; |
0809e267 | 3185 | info->type = PORT_CIRRUS; |
0809e267 | 3186 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3187 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3188 | info->cor2 = CyETC; |
3189 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3190 | |
f0eefdc3 | 3191 | chip_number = channel / CyPORTS_PER_CHIP; |
3aeea5b9 JS |
3192 | info->u.cyy.base_addr = cinfo->base_addr + |
3193 | (cy_chip_offset[chip_number] << index); | |
3194 | info->chip_rev = cyy_readb(info, CyGFRCR); | |
15ed6cc0 AC |
3195 | |
3196 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3197 | /* It is a CD1400 rev. J or later */ |
3198 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3199 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3200 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3201 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3202 | info->rtsdtr_inv = 1; |
3203 | } else { | |
3204 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3205 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3206 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3207 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3208 | info->rtsdtr_inv = 0; |
3209 | } | |
3046d50e JS |
3210 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3211 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3212 | } |
3046d50e | 3213 | |
0809e267 | 3214 | } |
3046d50e JS |
3215 | |
3216 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3217 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3218 | mod_timer(&cyz_timerlist, jiffies + 1); |
3219 | #ifdef CY_PCI_DEBUG | |
3220 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3221 | #endif | |
3222 | } | |
3223 | #endif | |
dd025c0c | 3224 | return 0; |
0809e267 JS |
3225 | } |
3226 | ||
1da177e4 LT |
3227 | /* initialize chips on Cyclom-Y card -- return number of valid |
3228 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
3229 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
3230 | int index) | |
1da177e4 | 3231 | { |
02f1175c JS |
3232 | unsigned int chip_number; |
3233 | void __iomem *base_addr; | |
3234 | ||
3235 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3236 | /* Cy_HwReset is 0x1400 */ | |
3237 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3238 | /* Cy_ClrIntr is 0x1800 */ | |
3239 | udelay(500L); | |
3240 | ||
15ed6cc0 AC |
3241 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3242 | chip_number++) { | |
02f1175c JS |
3243 | base_addr = |
3244 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3245 | mdelay(1); | |
db05c3b1 | 3246 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3247 | /************* |
3248 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3249 | chip_number, (unsigned long)base_addr); | |
3250 | *************/ | |
3251 | return chip_number; | |
3252 | } | |
3253 | ||
3254 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3255 | udelay(10L); | |
3256 | ||
3257 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3258 | cannot distinguish between references to chip 0 and a non- | |
3259 | existent chip 4. If the preceding clearing of the supposed | |
3260 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3261 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3262 | */ | |
db05c3b1 | 3263 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3264 | (cy_chip_offset[0] << index) + |
3265 | (CyGFRCR << index)) == 0) { | |
3266 | return chip_number; | |
3267 | } | |
3268 | ||
3269 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3270 | mdelay(1); | |
3271 | ||
db05c3b1 | 3272 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3273 | /* |
3274 | printk(" chip #%d at %#6lx is not responding ", | |
3275 | chip_number, (unsigned long)base_addr); | |
3276 | printk("(GFRCR stayed 0)\n", | |
3277 | */ | |
3278 | return chip_number; | |
3279 | } | |
db05c3b1 | 3280 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3281 | 0x40) { |
3282 | /* | |
3283 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3284 | "%#2x)\n", | |
3285 | chip_number, (unsigned long)base_addr, | |
3286 | base_addr[CyGFRCR<<index]); | |
3287 | */ | |
3288 | return chip_number; | |
3289 | } | |
3290 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3291 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3292 | /* It is a CD1400 rev. J or later */ |
3293 | /* Impossible to reach 5ms with this chip. | |
3294 | Changed to 2ms instead (f = 500 Hz). */ | |
3295 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3296 | } else { | |
3297 | /* f = 200 Hz */ | |
3298 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3299 | } | |
1da177e4 | 3300 | |
02f1175c JS |
3301 | /* |
3302 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3303 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3304 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3305 | */ |
3306 | } | |
3307 | return chip_number; | |
3308 | } /* cyy_init_card */ | |
1da177e4 LT |
3309 | |
3310 | /* | |
3311 | * --------------------------------------------------------------------- | |
3312 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3313 | * sets global variables and return the number of ISA boards found. | |
3314 | * --------------------------------------------------------------------- | |
3315 | */ | |
02f1175c | 3316 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3317 | { |
3318 | #ifdef CONFIG_ISA | |
02f1175c JS |
3319 | unsigned short cy_isa_irq, nboard; |
3320 | void __iomem *cy_isa_address; | |
3321 | unsigned short i, j, cy_isa_nchan; | |
1da177e4 | 3322 | #ifdef MODULE |
02f1175c | 3323 | int isparam = 0; |
1da177e4 LT |
3324 | #endif |
3325 | ||
02f1175c | 3326 | nboard = 0; |
1da177e4 LT |
3327 | |
3328 | #ifdef MODULE | |
3329 | /* Check for module parameters */ | |
02f1175c JS |
3330 | for (i = 0; i < NR_CARDS; i++) { |
3331 | if (maddr[i] || i) { | |
3332 | isparam = 1; | |
3333 | cy_isa_addresses[i] = maddr[i]; | |
3334 | } | |
3335 | if (!maddr[i]) | |
3336 | break; | |
1da177e4 LT |
3337 | } |
3338 | #endif | |
3339 | ||
02f1175c JS |
3340 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3341 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3342 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3343 | if (isa_address == 0x0000) |
096dcfce | 3344 | return nboard; |
1da177e4 | 3345 | |
02f1175c | 3346 | /* probe for CD1400... */ |
cd989b3a | 3347 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3348 | if (cy_isa_address == NULL) { |
3349 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3350 | "address\n"); | |
3351 | continue; | |
3352 | } | |
02f1175c JS |
3353 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3354 | cyy_init_card(cy_isa_address, 0); | |
3355 | if (cy_isa_nchan == 0) { | |
3137553d | 3356 | iounmap(cy_isa_address); |
02f1175c JS |
3357 | continue; |
3358 | } | |
1da177e4 LT |
3359 | #ifdef MODULE |
3360 | if (isparam && irq[i]) | |
02f1175c | 3361 | cy_isa_irq = irq[i]; |
1da177e4 LT |
3362 | else |
3363 | #endif | |
02f1175c JS |
3364 | /* find out the board's irq by probing */ |
3365 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3366 | if (cy_isa_irq == 0) { | |
21719191 JS |
3367 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3368 | "IRQ could not be detected.\n", | |
02f1175c | 3369 | (unsigned long)cy_isa_address); |
3137553d | 3370 | iounmap(cy_isa_address); |
02f1175c JS |
3371 | continue; |
3372 | } | |
3373 | ||
3374 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3375 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3376 | "more channels are available. Change NR_PORTS " | |
3377 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 3378 | (unsigned long)cy_isa_address); |
3137553d | 3379 | iounmap(cy_isa_address); |
096dcfce | 3380 | return nboard; |
02f1175c JS |
3381 | } |
3382 | /* fill the next cy_card structure available */ | |
3383 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 3384 | if (cy_card[j].base_addr == NULL) |
02f1175c JS |
3385 | break; |
3386 | } | |
3387 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3388 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3389 | "more cards can be used. Change NR_CARDS in " | |
3390 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3391 | (unsigned long)cy_isa_address); |
3137553d | 3392 | iounmap(cy_isa_address); |
096dcfce | 3393 | return nboard; |
02f1175c JS |
3394 | } |
3395 | ||
3396 | /* allocate IRQ */ | |
3397 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
3398 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
3399 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3400 | "could not allocate IRQ#%d.\n", | |
3401 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3402 | iounmap(cy_isa_address); |
096dcfce | 3403 | return nboard; |
02f1175c JS |
3404 | } |
3405 | ||
3406 | /* set cy_card */ | |
3407 | cy_card[j].base_addr = cy_isa_address; | |
97e87f8e | 3408 | cy_card[j].ctl_addr.p9050 = NULL; |
02f1175c JS |
3409 | cy_card[j].irq = (int)cy_isa_irq; |
3410 | cy_card[j].bus_index = 0; | |
3411 | cy_card[j].first_line = cy_next_channel; | |
963118ee JS |
3412 | cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; |
3413 | cy_card[j].nports = cy_isa_nchan; | |
3137553d JS |
3414 | if (cy_init_card(&cy_card[j])) { |
3415 | cy_card[j].base_addr = NULL; | |
3416 | free_irq(cy_isa_irq, &cy_card[j]); | |
3417 | iounmap(cy_isa_address); | |
3418 | continue; | |
3419 | } | |
02f1175c JS |
3420 | nboard++; |
3421 | ||
21719191 JS |
3422 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3423 | "%d channels starting from port %d\n", | |
02f1175c JS |
3424 | j + 1, (unsigned long)cy_isa_address, |
3425 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3426 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3427 | ||
6ad1ccc1 JS |
3428 | for (j = cy_next_channel; |
3429 | j < cy_next_channel + cy_isa_nchan; j++) | |
3430 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
3431 | cy_next_channel += cy_isa_nchan; |
3432 | } | |
096dcfce | 3433 | return nboard; |
1da177e4 | 3434 | #else |
096dcfce | 3435 | return 0; |
02f1175c JS |
3436 | #endif /* CONFIG_ISA */ |
3437 | } /* cy_detect_isa */ | |
1da177e4 | 3438 | |
58936d8d | 3439 | #ifdef CONFIG_PCI |
054f5b0a JS |
3440 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
3441 | { | |
3442 | unsigned int a; | |
3443 | ||
3444 | for (a = 0; a < size && *str; a++, str++) | |
3445 | if (*str & 0x80) | |
3446 | return -EINVAL; | |
3447 | ||
3448 | for (; a < size; a++, str++) | |
3449 | if (*str) | |
3450 | return -EINVAL; | |
3451 | ||
3452 | return 0; | |
3453 | } | |
3454 | ||
f61e761e | 3455 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3456 | unsigned int size) |
3457 | { | |
3458 | for (; size > 0; size--) { | |
3459 | cy_writel(fpga, *data++); | |
3460 | udelay(10); | |
3461 | } | |
3462 | } | |
3463 | ||
3464 | static void __devinit plx_init(struct pci_dev *pdev, int irq, | |
3465 | struct RUNTIME_9060 __iomem *addr) | |
1da177e4 | 3466 | { |
02f1175c | 3467 | /* Reset PLX */ |
054f5b0a | 3468 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3469 | udelay(100L); |
054f5b0a | 3470 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3471 | |
3472 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3473 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3474 | udelay(100L); |
054f5b0a JS |
3475 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3476 | ||
3477 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3478 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3479 | * registers. This will remain here until we find a permanent fix. | |
3480 | */ | |
3481 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3482 | } | |
3483 | ||
3484 | static int __devinit __cyz_load_fw(const struct firmware *fw, | |
3485 | const char *name, const u32 mailbox, void __iomem *base, | |
3486 | void __iomem *fpga) | |
3487 | { | |
f61e761e DW |
3488 | const void *ptr = fw->data; |
3489 | const struct zfile_header *h = ptr; | |
3490 | const struct zfile_config *c, *cs; | |
3491 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3492 | unsigned int a, tmp, len = fw->size; |
3493 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3494 | if (len < sizeof(*h)) { | |
3495 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3496 | return -EINVAL; | |
3497 | } | |
3498 | ||
3499 | cs = ptr + h->config_offset; | |
3500 | bs = ptr + h->block_offset; | |
3501 | ||
3502 | if ((void *)(cs + h->n_config) > ptr + len || | |
3503 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3504 | printk(BAD_FW "too short"); | |
3505 | return -EINVAL; | |
3506 | } | |
3507 | ||
3508 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3509 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3510 | printk(BAD_FW "bad formatted header string\n"); | |
3511 | return -EINVAL; | |
3512 | } | |
3513 | ||
3514 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3515 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3516 | return -EINVAL; | |
3517 | } | |
3518 | ||
3519 | tmp = 0; | |
3520 | for (c = cs; c < cs + h->n_config; c++) { | |
3521 | for (a = 0; a < c->n_blocks; a++) | |
3522 | if (c->block_list[a] > h->n_blocks) { | |
3523 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3524 | return -EINVAL; | |
3525 | } | |
3526 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3527 | tmp++; | |
3528 | } | |
3529 | if (!tmp) { | |
3530 | printk(BAD_FW "nothing appropriate\n"); | |
3531 | return -EINVAL; | |
3532 | } | |
3533 | ||
3534 | for (b = bs; b < bs + h->n_blocks; b++) | |
3535 | if (b->file_offset + b->size > len) { | |
3536 | printk(BAD_FW "bad block data offset\n"); | |
3537 | return -EINVAL; | |
3538 | } | |
3539 | ||
3540 | /* everything is OK, let's seek'n'load it */ | |
3541 | for (c = cs; c < cs + h->n_config; c++) | |
3542 | if (c->mailbox == mailbox && c->function == 0) | |
3543 | break; | |
3544 | ||
3545 | for (a = 0; a < c->n_blocks; a++) { | |
3546 | b = &bs[c->block_list[a]]; | |
3547 | if (b->type == ZBLOCK_FPGA) { | |
3548 | if (fpga != NULL) | |
3549 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3550 | b->size); | |
3551 | } else { | |
3552 | if (base != NULL) | |
3553 | memcpy_toio(base + b->ram_offset, | |
3554 | ptr + b->file_offset, b->size); | |
3555 | } | |
3556 | } | |
3557 | #undef BAD_FW | |
3558 | return 0; | |
3559 | } | |
3560 | ||
3561 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, | |
3562 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) | |
3563 | { | |
3564 | const struct firmware *fw; | |
3565 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3566 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3567 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3568 | void __iomem *tmp; |
963118ee | 3569 | u32 mailbox, status, nchan; |
054f5b0a JS |
3570 | unsigned int i; |
3571 | int retval; | |
3572 | ||
3573 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3574 | if (retval) { | |
3575 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3576 | goto err; | |
3577 | } | |
3578 | ||
3579 | /* Check whether the firmware is already loaded and running. If | |
3580 | positive, skip this board */ | |
2693f485 | 3581 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3582 | u32 cntval = readl(base_addr + 0x190); |
3583 | ||
3584 | udelay(100); | |
3585 | if (cntval != readl(base_addr + 0x190)) { | |
3586 | /* FW counter is working, FW is running */ | |
3587 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3588 | "Skipping board.\n"); | |
3589 | retval = 0; | |
3590 | goto err_rel; | |
3591 | } | |
3592 | } | |
3593 | ||
3594 | /* start boot */ | |
3595 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3596 | ~0x00030800UL); | |
3597 | ||
3598 | mailbox = readl(&ctl_addr->mail_box_0); | |
3599 | ||
2693f485 | 3600 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3601 | /* stops CPU and set window to beginning of RAM */ |
3602 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3603 | cy_writel(&cust->cpu_stop, 0); | |
3604 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3605 | udelay(100); | |
3606 | } | |
3607 | ||
3608 | plx_init(pdev, irq, ctl_addr); | |
3609 | ||
3610 | if (mailbox != 0) { | |
3611 | /* load FPGA */ | |
3612 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3613 | base_addr); | |
3614 | if (retval) | |
3615 | goto err_rel; | |
2693f485 | 3616 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3617 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3618 | "not loaded\n"); | |
3619 | goto err_rel; | |
3620 | } | |
3621 | } | |
3622 | ||
3623 | /* stops CPU and set window to beginning of RAM */ | |
3624 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3625 | cy_writel(&cust->cpu_stop, 0); | |
3626 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3627 | udelay(100); | |
3628 | ||
3629 | /* clear memory */ | |
c4923b4f | 3630 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3631 | cy_writeb(tmp, 255); |
3632 | if (mailbox != 0) { | |
3633 | /* set window to last 512K of RAM */ | |
3634 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3635 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3636 | cy_writeb(tmp, 255); |
3637 | /* set window to beginning of RAM */ | |
3638 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3639 | } |
3640 | ||
3641 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3642 | release_firmware(fw); | |
3643 | if (retval) | |
3644 | goto err; | |
3645 | ||
3646 | /* finish boot and start boards */ | |
3647 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3648 | cy_writel(&cust->cpu_start, 0); | |
3649 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3650 | i = 0; | |
3651 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3652 | msleep(100); | |
3653 | if (status != ZFIRM_ID) { | |
3654 | if (status == ZFIRM_HLT) { | |
3655 | dev_err(&pdev->dev, "you need an external power supply " | |
3656 | "for this number of ports. Firmware halted and " | |
3657 | "board reset.\n"); | |
3658 | retval = -EIO; | |
3659 | goto err; | |
3660 | } | |
3661 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3662 | "some more time\n", status); | |
3663 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3664 | i++ < 200) | |
3665 | msleep(100); | |
3666 | if (status != ZFIRM_ID) { | |
3667 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3668 | "Giving up. (fid->signature = 0x%x)\n", | |
3669 | status); | |
3670 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3671 | "upgrading the FW, please power cycle the " | |
3672 | "system before loading the new FW to the " | |
3673 | "Cyclades-Z.\n"); | |
3674 | ||
2693f485 | 3675 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3676 | plx_init(pdev, irq, ctl_addr); |
3677 | ||
3678 | retval = -EIO; | |
3679 | goto err; | |
3680 | } | |
3681 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3682 | i / 10); | |
3683 | } | |
3684 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3685 | ||
3686 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3687 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3688 | base_addr + readl(&fid->zfwctrl_addr)); | |
3689 | ||
963118ee | 3690 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3691 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3692 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3693 | |
963118ee | 3694 | if (nchan == 0) { |
054f5b0a JS |
3695 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3696 | "check the connection between the Z host card and the " | |
3697 | "serial expanders.\n"); | |
3698 | ||
2693f485 | 3699 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3700 | plx_init(pdev, irq, ctl_addr); |
3701 | ||
3702 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3703 | "reset.\n"); | |
3704 | retval = 0; | |
3705 | goto err; | |
3706 | } | |
3707 | ||
3708 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3709 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3710 | ||
3711 | /* | |
3712 | Early firmware failed to start looking for commands. | |
3713 | This enables firmware interrupts for those commands. | |
3714 | */ | |
3715 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3716 | (1 << 17)); | |
3717 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3718 | 0x00030800UL); | |
3719 | ||
963118ee | 3720 | return nchan; |
054f5b0a JS |
3721 | err_rel: |
3722 | release_firmware(fw); | |
3723 | err: | |
3724 | return retval; | |
1da177e4 LT |
3725 | } |
3726 | ||
58936d8d JS |
3727 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
3728 | const struct pci_device_id *ent) | |
1da177e4 | 3729 | { |
3137553d JS |
3730 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3731 | char *card_name = NULL; | |
101b8159 | 3732 | u32 uninitialized_var(mailbox); |
3137553d JS |
3733 | unsigned int device_id, nchan = 0, card_no, i; |
3734 | unsigned char plx_ver; | |
3735 | int retval, irq; | |
02f1175c | 3736 | |
58936d8d JS |
3737 | retval = pci_enable_device(pdev); |
3738 | if (retval) { | |
3739 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3740 | goto err; |
58936d8d | 3741 | } |
1da177e4 | 3742 | |
58936d8d | 3743 | /* read PCI configuration area */ |
3137553d | 3744 | irq = pdev->irq; |
58936d8d | 3745 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3746 | |
3137553d JS |
3747 | #if defined(__alpha__) |
3748 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3749 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3750 | "addresses on Alpha systems.\n"); | |
3751 | retval = -EIO; | |
3752 | goto err_dis; | |
3753 | } | |
3754 | #endif | |
3755 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3756 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3757 | "addresses\n"); | |
3758 | retval = -EIO; | |
3759 | goto err_dis; | |
3760 | } | |
3761 | ||
3762 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3763 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3764 | "it...\n"); | |
3765 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3766 | } | |
3767 | ||
3768 | retval = pci_request_regions(pdev, "cyclades"); | |
3769 | if (retval) { | |
3770 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3771 | goto err_dis; | |
3772 | } | |
3773 | ||
3774 | retval = -EIO; | |
58936d8d JS |
3775 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3776 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3777 | card_name = "Cyclom-Y"; |
1da177e4 | 3778 | |
24e6fd4c JS |
3779 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3780 | CyPCI_Yctl); | |
3137553d JS |
3781 | if (addr0 == NULL) { |
3782 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3783 | goto err_reg; | |
58936d8d | 3784 | } |
24e6fd4c JS |
3785 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3786 | CyPCI_Ywin); | |
3137553d JS |
3787 | if (addr2 == NULL) { |
3788 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3789 | goto err_unmap; | |
58936d8d | 3790 | } |
1da177e4 | 3791 | |
3137553d JS |
3792 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3793 | if (nchan == 0) { | |
21719191 JS |
3794 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3795 | "Serial-Modules\n"); | |
c847d47c | 3796 | goto err_unmap; |
58936d8d | 3797 | } |
58936d8d | 3798 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3799 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3800 | |
24e6fd4c JS |
3801 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3802 | CyPCI_Zctl); | |
3137553d JS |
3803 | if (addr0 == NULL) { |
3804 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3805 | goto err_reg; | |
3806 | } | |
58936d8d JS |
3807 | |
3808 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3809 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3810 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3811 | |
054f5b0a | 3812 | plx_init(pdev, irq, addr0); |
02f1175c | 3813 | |
101b8159 | 3814 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3815 | |
24e6fd4c JS |
3816 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3817 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3818 | if (addr2 == NULL) { |
3819 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3820 | goto err_unmap; | |
58936d8d JS |
3821 | } |
3822 | ||
3823 | if (mailbox == ZE_V1) { | |
3137553d | 3824 | card_name = "Cyclades-Ze"; |
58936d8d | 3825 | } else { |
3137553d | 3826 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3827 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3828 | if (mailbox == ZO_V1) { |
3829 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3830 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3831 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3832 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3833 | fpga_id)), (ulong)(0xff & | |
3834 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3835 | fpga_version))); | |
3836 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3837 | } else { | |
3838 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3839 | "Cyclades-Z board. FPGA not loaded\n"); | |
3840 | } | |
1da177e4 | 3841 | #endif |
3137553d JS |
3842 | /* The following clears the firmware id word. This |
3843 | ensures that the driver will not attempt to talk to | |
3844 | the board until it has been properly initialized. | |
3845 | */ | |
3846 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
3847 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 3848 | } |
ace08c3c JS |
3849 | |
3850 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 3851 | if (retval <= 0) |
ace08c3c | 3852 | goto err_unmap; |
963118ee | 3853 | nchan = retval; |
3137553d JS |
3854 | } |
3855 | ||
3856 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
3857 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3858 | "channels are available. Change NR_PORTS in " | |
3859 | "cyclades.c and recompile kernel.\n"); | |
3860 | goto err_unmap; | |
3861 | } | |
3862 | /* fill the next cy_card structure available */ | |
3863 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
3864 | if (cy_card[card_no].base_addr == NULL) | |
3865 | break; | |
3866 | } | |
3867 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
3868 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3869 | "more cards can be used. Change NR_CARDS in " | |
3870 | "cyclades.c and recompile kernel.\n"); | |
3871 | goto err_unmap; | |
3872 | } | |
3873 | ||
3874 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
3875 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3876 | /* allocate IRQ */ | |
3877 | retval = request_irq(irq, cyy_interrupt, | |
3878 | IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); | |
3879 | if (retval) { | |
3880 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
3881 | goto err_unmap; | |
58936d8d | 3882 | } |
963118ee | 3883 | cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 3884 | } else { |
f0eefdc3 JS |
3885 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
3886 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3887 | ||
3888 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3889 | ||
101b8159 JS |
3890 | cy_card[card_no].hw_ver = mailbox; |
3891 | cy_card[card_no].num_chips = (unsigned int)-1; | |
f0eefdc3 | 3892 | cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; |
02f1175c | 3893 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 3894 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
3895 | if (irq != 0 && irq != 255) { |
3896 | retval = request_irq(irq, cyz_interrupt, | |
58936d8d | 3897 | IRQF_SHARED, "Cyclades-Z", |
3137553d | 3898 | &cy_card[card_no]); |
58936d8d | 3899 | if (retval) { |
21719191 | 3900 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 3901 | goto err_unmap; |
02f1175c | 3902 | } |
58936d8d | 3903 | } |
02f1175c | 3904 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 3905 | } |
02f1175c | 3906 | |
3137553d JS |
3907 | /* set cy_card */ |
3908 | cy_card[card_no].base_addr = addr2; | |
97e87f8e | 3909 | cy_card[card_no].ctl_addr.p9050 = addr0; |
3137553d JS |
3910 | cy_card[card_no].irq = irq; |
3911 | cy_card[card_no].bus_index = 1; | |
3912 | cy_card[card_no].first_line = cy_next_channel; | |
963118ee | 3913 | cy_card[card_no].nports = nchan; |
3137553d JS |
3914 | retval = cy_init_card(&cy_card[card_no]); |
3915 | if (retval) | |
3916 | goto err_null; | |
58936d8d | 3917 | |
3137553d | 3918 | pci_set_drvdata(pdev, &cy_card[card_no]); |
58936d8d | 3919 | |
3137553d JS |
3920 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3921 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3922 | /* enable interrupts in the PCI interface */ | |
3923 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
3924 | switch (plx_ver) { | |
3925 | case PLX_9050: | |
3137553d JS |
3926 | cy_writeb(addr0 + 0x4c, 0x43); |
3927 | break; | |
3928 | ||
3929 | case PLX_9060: | |
3930 | case PLX_9080: | |
3931 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
3932 | { |
3933 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
3934 | plx_init(pdev, irq, ctl_addr); | |
3935 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
3936 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
3937 | break; |
3938 | } | |
97e87f8e | 3939 | } |
58936d8d JS |
3940 | } |
3941 | ||
3137553d JS |
3942 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
3943 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
3944 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) | |
3945 | tty_register_device(cy_serial_driver, i, &pdev->dev); | |
3946 | cy_next_channel += nchan; | |
3947 | ||
58936d8d | 3948 | return 0; |
3137553d JS |
3949 | err_null: |
3950 | cy_card[card_no].base_addr = NULL; | |
3951 | free_irq(irq, &cy_card[card_no]); | |
3952 | err_unmap: | |
24e6fd4c | 3953 | iounmap(addr0); |
3137553d | 3954 | if (addr2) |
24e6fd4c | 3955 | iounmap(addr2); |
3137553d JS |
3956 | err_reg: |
3957 | pci_release_regions(pdev); | |
3958 | err_dis: | |
3959 | pci_disable_device(pdev); | |
3960 | err: | |
3961 | return retval; | |
58936d8d | 3962 | } |
58936d8d | 3963 | |
6747cd93 | 3964 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 3965 | { |
38d09093 | 3966 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 3967 | unsigned int i; |
38d09093 | 3968 | |
85c93fa9 | 3969 | /* non-Z with old PLX */ |
2693f485 | 3970 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 3971 | PLX_9050) |
97e87f8e | 3972 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
3973 | else |
3974 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3975 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 3976 | #endif |
97e87f8e JS |
3977 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
3978 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
3979 | ~0x0900); | |
85c93fa9 | 3980 | |
24e6fd4c | 3981 | iounmap(cinfo->base_addr); |
97e87f8e JS |
3982 | if (cinfo->ctl_addr.p9050) |
3983 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
3984 | if (cinfo->irq |
3985 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3986 | && !cy_is_Z(cinfo) |
38d09093 JS |
3987 | #endif /* CONFIG_CYZ_INTR */ |
3988 | ) | |
3989 | free_irq(cinfo->irq, cinfo); | |
3990 | pci_release_regions(pdev); | |
3991 | ||
3992 | cinfo->base_addr = NULL; | |
6ad1ccc1 JS |
3993 | for (i = cinfo->first_line; i < cinfo->first_line + |
3994 | cinfo->nports; i++) | |
3995 | tty_unregister_device(cy_serial_driver, i); | |
dd025c0c JS |
3996 | cinfo->nports = 0; |
3997 | kfree(cinfo->ports); | |
38d09093 JS |
3998 | } |
3999 | ||
6747cd93 JS |
4000 | static struct pci_driver cy_pci_driver = { |
4001 | .name = "cyclades", | |
4002 | .id_table = cy_pci_dev_id, | |
4003 | .probe = cy_pci_probe, | |
4004 | .remove = __devexit_p(cy_pci_remove) | |
4005 | }; | |
4006 | #endif | |
4007 | ||
444697d6 | 4008 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 4009 | { |
02f1175c | 4010 | struct cyclades_port *info; |
dd025c0c | 4011 | unsigned int i, j; |
02f1175c JS |
4012 | __u32 cur_jifs = jiffies; |
4013 | ||
444697d6 | 4014 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
4015 | "IdleIn Overruns Ldisc\n"); |
4016 | ||
02f1175c | 4017 | /* Output one line for each known port */ |
dd025c0c JS |
4018 | for (i = 0; i < NR_CARDS; i++) |
4019 | for (j = 0; j < cy_card[i].nports; j++) { | |
4020 | info = &cy_card[i].ports[j]; | |
4021 | ||
d13549f8 JS |
4022 | if (info->port.count) { |
4023 | /* XXX is the ldisc num worth this? */ | |
4024 | struct tty_struct *tty; | |
4025 | struct tty_ldisc *ld; | |
4026 | int num = 0; | |
4027 | tty = tty_port_tty_get(&info->port); | |
4028 | if (tty) { | |
4029 | ld = tty_ldisc_ref(tty); | |
4030 | if (ld) { | |
4031 | num = ld->ops->num; | |
4032 | tty_ldisc_deref(ld); | |
4033 | } | |
4034 | tty_kref_put(tty); | |
4035 | } | |
444697d6 | 4036 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 4037 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
4038 | (cur_jifs - info->idle_stats.in_use) / |
4039 | HZ, info->idle_stats.xmit_bytes, | |
4040 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
4041 | HZ, info->idle_stats.recv_bytes, | |
4042 | (cur_jifs - info->idle_stats.recv_idle)/ | |
4043 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
4044 | num); |
4045 | } else | |
444697d6 | 4046 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
4047 | "%10lu %8lu %9lu %6ld\n", |
4048 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 4049 | } |
444697d6 AD |
4050 | return 0; |
4051 | } | |
4052 | ||
4053 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
4054 | { | |
4055 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
4056 | } |
4057 | ||
444697d6 AD |
4058 | static const struct file_operations cyclades_proc_fops = { |
4059 | .owner = THIS_MODULE, | |
4060 | .open = cyclades_proc_open, | |
4061 | .read = seq_read, | |
4062 | .llseek = seq_lseek, | |
4063 | .release = single_release, | |
4064 | }; | |
4065 | ||
1da177e4 LT |
4066 | /* The serial driver boot-time initialization code! |
4067 | Hardware I/O ports are mapped to character special devices on a | |
4068 | first found, first allocated manner. That is, this code searches | |
4069 | for Cyclom cards in the system. As each is found, it is probed | |
4070 | to discover how many chips (and thus how many ports) are present. | |
4071 | These ports are mapped to the tty ports 32 and upward in monotonic | |
4072 | fashion. If an 8-port card is replaced with a 16-port card, the | |
4073 | port mapping on a following card will shift. | |
4074 | ||
4075 | This approach is different from what is used in the other serial | |
4076 | device driver because the Cyclom is more properly a multiplexer, | |
4077 | not just an aggregation of serial ports on one card. | |
4078 | ||
4079 | If there are more cards with more ports than have been | |
4080 | statically allocated above, a warning is printed and the | |
4081 | extra ports are ignored. | |
4082 | */ | |
4083 | ||
b68e31d0 | 4084 | static const struct tty_operations cy_ops = { |
02f1175c JS |
4085 | .open = cy_open, |
4086 | .close = cy_close, | |
4087 | .write = cy_write, | |
4088 | .put_char = cy_put_char, | |
4089 | .flush_chars = cy_flush_chars, | |
4090 | .write_room = cy_write_room, | |
4091 | .chars_in_buffer = cy_chars_in_buffer, | |
4092 | .flush_buffer = cy_flush_buffer, | |
4093 | .ioctl = cy_ioctl, | |
4094 | .throttle = cy_throttle, | |
4095 | .unthrottle = cy_unthrottle, | |
4096 | .set_termios = cy_set_termios, | |
4097 | .stop = cy_stop, | |
4098 | .start = cy_start, | |
4099 | .hangup = cy_hangup, | |
4100 | .break_ctl = cy_break, | |
4101 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4102 | .tiocmget = cy_tiocmget, |
4103 | .tiocmset = cy_tiocmset, | |
444697d6 | 4104 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
4105 | }; |
4106 | ||
02f1175c | 4107 | static int __init cy_init(void) |
1da177e4 | 4108 | { |
dd025c0c | 4109 | unsigned int nboards; |
9dacf3b2 | 4110 | int retval = -ENOMEM; |
02f1175c JS |
4111 | |
4112 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4113 | if (!cy_serial_driver) | |
9dacf3b2 | 4114 | goto err; |
21719191 JS |
4115 | |
4116 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", | |
4117 | __DATE__, __TIME__); | |
02f1175c JS |
4118 | |
4119 | /* Initialize the tty_driver structure */ | |
4120 | ||
4121 | cy_serial_driver->owner = THIS_MODULE; | |
4122 | cy_serial_driver->driver_name = "cyclades"; | |
4123 | cy_serial_driver->name = "ttyC"; | |
4124 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4125 | cy_serial_driver->minor_start = 0; | |
4126 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4127 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4128 | cy_serial_driver->init_termios = tty_std_termios; | |
4129 | cy_serial_driver->init_termios.c_cflag = | |
4130 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4131 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4132 | tty_set_operations(cy_serial_driver, &cy_ops); |
4133 | ||
9dacf3b2 JS |
4134 | retval = tty_register_driver(cy_serial_driver); |
4135 | if (retval) { | |
4136 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4137 | goto err_frtty; | |
4138 | } | |
02f1175c | 4139 | |
02f1175c JS |
4140 | /* the code below is responsible to find the boards. Each different |
4141 | type of board has its own detection routine. If a board is found, | |
4142 | the next cy_card structure available is set by the detection | |
4143 | routine. These functions are responsible for checking the | |
4144 | availability of cy_card and cy_port data structures and updating | |
4145 | the cy_next_channel. */ | |
4146 | ||
4147 | /* look for isa boards */ | |
14a55a67 | 4148 | nboards = cy_detect_isa(); |
02f1175c | 4149 | |
6747cd93 | 4150 | #ifdef CONFIG_PCI |
02f1175c | 4151 | /* look for pci boards */ |
6747cd93 | 4152 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4153 | if (retval && !nboards) { |
4154 | tty_unregister_driver(cy_serial_driver); | |
4155 | goto err_frtty; | |
4156 | } | |
6747cd93 | 4157 | #endif |
9dacf3b2 JS |
4158 | |
4159 | return 0; | |
9dacf3b2 JS |
4160 | err_frtty: |
4161 | put_tty_driver(cy_serial_driver); | |
4162 | err: | |
4163 | return retval; | |
02f1175c | 4164 | } /* cy_init */ |
1da177e4 | 4165 | |
02f1175c | 4166 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4167 | { |
dd025c0c | 4168 | struct cyclades_card *card; |
65f76a82 | 4169 | unsigned int i, e1; |
1da177e4 LT |
4170 | |
4171 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4172 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4173 | #endif /* CONFIG_CYZ_INTR */ |
4174 | ||
15ed6cc0 AC |
4175 | e1 = tty_unregister_driver(cy_serial_driver); |
4176 | if (e1) | |
21719191 JS |
4177 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4178 | "driver(%d)\n", e1); | |
1da177e4 | 4179 | |
6747cd93 JS |
4180 | #ifdef CONFIG_PCI |
4181 | pci_unregister_driver(&cy_pci_driver); | |
4182 | #endif | |
4183 | ||
02f1175c | 4184 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4185 | card = &cy_card[i]; |
4186 | if (card->base_addr) { | |
85c93fa9 | 4187 | /* clear interrupt */ |
dd025c0c JS |
4188 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4189 | iounmap(card->base_addr); | |
97e87f8e JS |
4190 | if (card->ctl_addr.p9050) |
4191 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4192 | if (card->irq |
1da177e4 | 4193 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4194 | && !cy_is_Z(card) |
1da177e4 | 4195 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4196 | ) |
dd025c0c | 4197 | free_irq(card->irq, card); |
65f76a82 | 4198 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4199 | card->nports; e1++) |
6ad1ccc1 | 4200 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4201 | kfree(card->ports); |
02f1175c JS |
4202 | } |
4203 | } | |
f2462bfe JS |
4204 | |
4205 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4206 | } /* cy_cleanup_module */ |
4207 | ||
4208 | module_init(cy_init); | |
4209 | module_exit(cy_cleanup_module); | |
4210 | ||
4211 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4212 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4213 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |