Commit | Line | Data |
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e3b3d0f5 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | #undef BLOCKMOVE |
3 | #define Z_WAKE | |
4 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
5 | |
6 | /* | |
1da177e4 LT |
7 | * This file contains the driver for the Cyclades async multiport |
8 | * serial boards. | |
9 | * | |
10 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
11 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
1da177e4 | 12 | * |
ebdb5135 | 13 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
14 | * |
15 | * Much of the design and some of the code came from serial.c | |
16 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
17 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
18 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 19 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 | 20 | * |
1da177e4 LT |
21 | */ |
22 | ||
ebdb5135 | 23 | #define CY_VERSION "2.6" |
096dcfce | 24 | |
1da177e4 LT |
25 | /* If you need to install more boards than NR_CARDS, change the constant |
26 | in the definition below. No other change is necessary to support up to | |
27 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
28 | ||
02f1175c | 29 | #define NR_CARDS 4 |
1da177e4 LT |
30 | |
31 | /* | |
32 | If the total number of ports is larger than NR_PORTS, change this | |
33 | constant in the definition below. No other change is necessary to | |
34 | support more boards/ports. */ | |
35 | ||
02f1175c | 36 | #define NR_PORTS 256 |
1da177e4 | 37 | |
1da177e4 LT |
38 | #define ZO_V1 0 |
39 | #define ZO_V2 1 | |
40 | #define ZE_V1 2 | |
41 | ||
42 | #define SERIAL_PARANOIA_CHECK | |
43 | #undef CY_DEBUG_OPEN | |
44 | #undef CY_DEBUG_THROTTLE | |
45 | #undef CY_DEBUG_OTHER | |
46 | #undef CY_DEBUG_IO | |
47 | #undef CY_DEBUG_COUNT | |
48 | #undef CY_DEBUG_DTR | |
1da177e4 LT |
49 | #undef CY_DEBUG_INTERRUPTS |
50 | #undef CY_16Y_HACK | |
51 | #undef CY_ENABLE_MONITORING | |
52 | #undef CY_PCI_DEBUG | |
53 | ||
1da177e4 | 54 | /* |
15ed6cc0 | 55 | * Include section |
1da177e4 | 56 | */ |
1da177e4 LT |
57 | #include <linux/module.h> |
58 | #include <linux/errno.h> | |
59 | #include <linux/signal.h> | |
60 | #include <linux/sched.h> | |
61 | #include <linux/timer.h> | |
62 | #include <linux/interrupt.h> | |
63 | #include <linux/tty.h> | |
33f0f88f | 64 | #include <linux/tty_flip.h> |
1da177e4 LT |
65 | #include <linux/serial.h> |
66 | #include <linux/major.h> | |
67 | #include <linux/string.h> | |
68 | #include <linux/fcntl.h> | |
69 | #include <linux/ptrace.h> | |
70 | #include <linux/cyclades.h> | |
71 | #include <linux/mm.h> | |
72 | #include <linux/ioport.h> | |
73 | #include <linux/init.h> | |
74 | #include <linux/delay.h> | |
75 | #include <linux/spinlock.h> | |
76 | #include <linux/bitops.h> | |
054f5b0a | 77 | #include <linux/firmware.h> |
9f56fad7 | 78 | #include <linux/device.h> |
5a0e3ad6 | 79 | #include <linux/slab.h> |
1da177e4 | 80 | |
15ed6cc0 | 81 | #include <linux/io.h> |
15ed6cc0 | 82 | #include <linux/uaccess.h> |
1da177e4 | 83 | |
1da177e4 LT |
84 | #include <linux/kernel.h> |
85 | #include <linux/pci.h> | |
86 | ||
87 | #include <linux/stat.h> | |
88 | #include <linux/proc_fs.h> | |
444697d6 | 89 | #include <linux/seq_file.h> |
1da177e4 | 90 | |
02f1175c | 91 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
1da177e4 | 92 | |
1da177e4 LT |
93 | #ifndef SERIAL_XMIT_SIZE |
94 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
95 | #endif | |
1da177e4 | 96 | |
054f5b0a JS |
97 | /* firmware stuff */ |
98 | #define ZL_MAX_BLOCKS 16 | |
99 | #define DRIVER_VERSION 0x02010203 | |
100 | #define RAM_SIZE 0x80000 | |
101 | ||
054f5b0a JS |
102 | enum zblock_type { |
103 | ZBLOCK_PRG = 0, | |
104 | ZBLOCK_FPGA = 1 | |
105 | }; | |
106 | ||
107 | struct zfile_header { | |
108 | char name[64]; | |
109 | char date[32]; | |
110 | char aux[32]; | |
111 | u32 n_config; | |
112 | u32 config_offset; | |
113 | u32 n_blocks; | |
114 | u32 block_offset; | |
115 | u32 reserved[9]; | |
116 | } __attribute__ ((packed)); | |
117 | ||
118 | struct zfile_config { | |
119 | char name[64]; | |
120 | u32 mailbox; | |
121 | u32 function; | |
122 | u32 n_blocks; | |
123 | u32 block_list[ZL_MAX_BLOCKS]; | |
124 | } __attribute__ ((packed)); | |
125 | ||
126 | struct zfile_block { | |
127 | u32 type; | |
128 | u32 file_offset; | |
129 | u32 ram_offset; | |
130 | u32 size; | |
131 | } __attribute__ ((packed)); | |
132 | ||
1da177e4 LT |
133 | static struct tty_driver *cy_serial_driver; |
134 | ||
135 | #ifdef CONFIG_ISA | |
136 | /* This is the address lookup table. The driver will probe for | |
137 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
138 | driver to probe addresses at a different address, add it to | |
139 | this table. If the driver is probing some other board and | |
140 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
141 | */ |
142 | ||
143 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
144 | 0xD0000, |
145 | 0xD2000, | |
146 | 0xD4000, | |
147 | 0xD6000, | |
148 | 0xD8000, | |
149 | 0xDA000, | |
150 | 0xDC000, | |
151 | 0xDE000, | |
152 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 153 | }; |
02f1175c | 154 | |
fe971071 | 155 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 | 156 | |
3046d50e JS |
157 | static long maddr[NR_CARDS]; |
158 | static int irq[NR_CARDS]; | |
1da177e4 | 159 | |
3b60daf8 DH |
160 | module_param_hw_array(maddr, long, iomem, NULL, 0); |
161 | module_param_hw_array(irq, int, irq, NULL, 0); | |
1da177e4 | 162 | |
02f1175c | 163 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
164 | |
165 | /* This is the per-card data structure containing address, irq, number of | |
166 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
167 | */ | |
168 | static struct cyclades_card cy_card[NR_CARDS]; | |
169 | ||
02f1175c | 170 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 171 | |
1da177e4 LT |
172 | /* |
173 | * This is used to look up the divisor speeds and the timeouts | |
174 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 175 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
176 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
177 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
178 | * HI VHI | |
179 | * 20 | |
180 | */ | |
ebdb5135 | 181 | static const int baud_table[] = { |
02f1175c JS |
182 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
183 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
184 | 230400, 0 | |
185 | }; | |
186 | ||
ebdb5135 | 187 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
188 | /* value => 00 01 02 03 04 */ |
189 | /* divide by 8 32 128 512 2048 */ | |
190 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
191 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
192 | }; | |
193 | ||
ebdb5135 | 194 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
195 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
196 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
197 | }; | |
198 | ||
ebdb5135 | 199 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
200 | /* value => 00 01 02 03 04 */ |
201 | /* divide by 8 32 128 512 2048 */ | |
202 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
203 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
204 | 0x00 | |
205 | }; | |
206 | ||
ebdb5135 | 207 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
208 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
209 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
210 | 0x21 | |
211 | }; | |
212 | ||
ebdb5135 | 213 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
214 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
215 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
216 | 0x07 | |
217 | }; | |
1da177e4 LT |
218 | |
219 | /* | |
220 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
221 | * The cyclades_port structure member rflow and the vector rflow_thr |
222 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
223 | * data loss even when the system interrupt latency is too high. These flags | |
224 | * are to be used only with very special applications. Setting these flags | |
225 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
226 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
227 | * cables. |
228 | */ | |
229 | ||
ebdb5135 | 230 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
231 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
232 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
233 | 0x0a | |
234 | }; | |
1da177e4 LT |
235 | |
236 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
237 | * address order. This look-up table overcomes that problem. | |
238 | */ | |
f0eefdc3 | 239 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
240 | 0x0400, |
241 | 0x0800, | |
242 | 0x0C00, | |
243 | 0x0200, | |
244 | 0x0600, | |
245 | 0x0A00, | |
246 | 0x0E00 | |
247 | }; | |
1da177e4 LT |
248 | |
249 | /* PCI related definitions */ | |
250 | ||
1da177e4 | 251 | #ifdef CONFIG_PCI |
ebdb5135 | 252 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
253 | /* PCI < 1Mb */ |
254 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
255 | /* PCI > 1Mb */ | |
256 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
257 | /* 4Y PCI < 1Mb */ | |
258 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
259 | /* 4Y PCI > 1Mb */ | |
260 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
261 | /* 8Y PCI < 1Mb */ | |
262 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
263 | /* 8Y PCI > 1Mb */ | |
264 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
265 | /* Z PCI < 1Mb */ | |
266 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
267 | /* Z PCI > 1Mb */ | |
268 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 269 | { } /* end of table */ |
02f1175c | 270 | }; |
893de2df | 271 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
272 | #endif |
273 | ||
274 | static void cy_start(struct tty_struct *); | |
d13549f8 | 275 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 276 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
277 | #ifdef CONFIG_ISA |
278 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 279 | #endif /* CONFIG_ISA */ |
1da177e4 | 280 | |
1da177e4 | 281 | #ifndef CONFIG_CYZ_INTR |
24ed960a | 282 | static void cyz_poll(struct timer_list *); |
1da177e4 LT |
283 | |
284 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
285 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
286 | ||
1d27e3e2 | 287 | static DEFINE_TIMER(cyz_timerlist, cyz_poll); |
1da177e4 | 288 | |
02f1175c | 289 | #else /* CONFIG_CYZ_INTR */ |
a8497b31 | 290 | static void cyz_rx_restart(struct timer_list *); |
02f1175c | 291 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 292 | |
f25d596f | 293 | static void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
3aeea5b9 JS |
294 | { |
295 | struct cyclades_card *card = port->card; | |
296 | ||
297 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); | |
298 | } | |
299 | ||
f88d8683 | 300 | static u8 cyy_readb(struct cyclades_port *port, u32 reg) |
3aeea5b9 JS |
301 | { |
302 | struct cyclades_card *card = port->card; | |
303 | ||
304 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); | |
305 | } | |
306 | ||
2693f485 JS |
307 | static inline bool cy_is_Z(struct cyclades_card *card) |
308 | { | |
309 | return card->num_chips == (unsigned int)-1; | |
310 | } | |
311 | ||
312 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
313 | { | |
314 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
315 | } | |
316 | ||
317 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
318 | { | |
319 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
320 | } | |
321 | ||
1c82363e | 322 | static bool cyz_is_loaded(struct cyclades_card *card) |
2693f485 JS |
323 | { |
324 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
325 | ||
326 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
327 | readl(&fw_id->signature) == ZFIRM_ID; | |
328 | } | |
329 | ||
8c6ba003 | 330 | static int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 331 | const char *name, const char *routine) |
1da177e4 LT |
332 | { |
333 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 334 | if (!info) { |
21719191 JS |
335 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
336 | "in %s\n", name, routine); | |
02f1175c JS |
337 | return 1; |
338 | } | |
339 | ||
02f1175c | 340 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
341 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
342 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
343 | return 1; |
344 | } | |
1da177e4 | 345 | #endif |
02f1175c | 346 | return 0; |
ebdb5135 | 347 | } |
1da177e4 | 348 | |
1da177e4 LT |
349 | /***********************************************************/ |
350 | /********* Start of block of Cyclom-Y specific code ********/ | |
351 | ||
352 | /* This routine waits up to 1000 micro-seconds for the previous | |
353 | command to the Cirrus chip to complete and then issues the | |
354 | new command. An error is returned if the previous command | |
355 | didn't finish within the time limit. | |
356 | ||
357 | This function is only called from inside spinlock-protected code. | |
358 | */ | |
3aeea5b9 | 359 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
1da177e4 | 360 | { |
3aeea5b9 | 361 | void __iomem *ccr = base_addr + (CyCCR << index); |
ad39c300 | 362 | unsigned int i; |
1da177e4 | 363 | |
02f1175c JS |
364 | /* Check to see that the previous command has completed */ |
365 | for (i = 0; i < 100; i++) { | |
3aeea5b9 | 366 | if (readb(ccr) == 0) |
02f1175c | 367 | break; |
02f1175c | 368 | udelay(10L); |
1da177e4 | 369 | } |
02f1175c JS |
370 | /* if the CCR never cleared, the previous command |
371 | didn't finish within the "reasonable time" */ | |
372 | if (i == 100) | |
096dcfce | 373 | return -1; |
1da177e4 | 374 | |
02f1175c | 375 | /* Issue the new command */ |
3aeea5b9 | 376 | cy_writeb(ccr, cmd); |
1da177e4 | 377 | |
096dcfce | 378 | return 0; |
3aeea5b9 JS |
379 | } |
380 | ||
381 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) | |
382 | { | |
383 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, | |
384 | port->card->bus_index); | |
385 | } | |
1da177e4 LT |
386 | |
387 | #ifdef CONFIG_ISA | |
388 | /* ISA interrupt detection code */ | |
15ed6cc0 | 389 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 390 | { |
02f1175c JS |
391 | int irq; |
392 | unsigned long irqs, flags; | |
393 | int save_xir, save_car; | |
394 | int index = 0; /* IRQ probing is only for ISA */ | |
395 | ||
396 | /* forget possible initially masked and pending IRQ */ | |
397 | irq = probe_irq_off(probe_irq_on()); | |
398 | ||
399 | /* Clear interrupts on the board first */ | |
400 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
401 | /* Cy_ClrIntr is 0x1800 */ | |
402 | ||
403 | irqs = probe_irq_on(); | |
404 | /* Wait ... */ | |
f6e208c1 | 405 | msleep(5); |
02f1175c JS |
406 | |
407 | /* Enable the Tx interrupts on the CD1400 */ | |
408 | local_irq_save(flags); | |
409 | cy_writeb(address + (CyCAR << index), 0); | |
3aeea5b9 | 410 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
02f1175c JS |
411 | |
412 | cy_writeb(address + (CyCAR << index), 0); | |
413 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 414 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
415 | local_irq_restore(flags); |
416 | ||
417 | /* Wait ... */ | |
f6e208c1 | 418 | msleep(5); |
02f1175c JS |
419 | |
420 | /* Check which interrupt is in use */ | |
421 | irq = probe_irq_off(irqs); | |
422 | ||
423 | /* Clean up */ | |
db05c3b1 JS |
424 | save_xir = (u_char) readb(address + (CyTIR << index)); |
425 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
426 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
427 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 428 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
429 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
430 | cy_writeb(address + (CyCAR << index), (save_car)); | |
431 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
432 | /* Cy_ClrIntr is 0x1800 */ | |
433 | ||
434 | return (irq > 0) ? irq : 0; | |
1da177e4 | 435 | } |
02f1175c | 436 | #endif /* CONFIG_ISA */ |
1da177e4 | 437 | |
ce97a097 JS |
438 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
439 | void __iomem *base_addr) | |
e941027f JS |
440 | { |
441 | struct cyclades_port *info; | |
227434f8 | 442 | struct tty_port *port; |
65f76a82 | 443 | int len, index = cinfo->bus_index; |
3aeea5b9 | 444 | u8 ivr, save_xir, channel, save_car, data, char_count; |
e941027f | 445 | |
e941027f | 446 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 447 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 448 | #endif |
ce97a097 | 449 | /* determine the channel & change to that context */ |
65f76a82 JS |
450 | save_xir = readb(base_addr + (CyRIR << index)); |
451 | channel = save_xir & CyIRChannel; | |
ce97a097 | 452 | info = &cinfo->ports[channel + chip * 4]; |
227434f8 | 453 | port = &info->port; |
3aeea5b9 JS |
454 | save_car = cyy_readb(info, CyCAR); |
455 | cyy_writeb(info, CyCAR, save_xir); | |
456 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; | |
ce97a097 | 457 | |
ce97a097 | 458 | /* there is an open port for this data */ |
3aeea5b9 JS |
459 | if (ivr == CyIVRRxEx) { /* exception */ |
460 | data = cyy_readb(info, CyRDSR); | |
ce97a097 JS |
461 | |
462 | /* For statistics only */ | |
463 | if (data & CyBREAK) | |
464 | info->icount.brk++; | |
465 | else if (data & CyFRAME) | |
466 | info->icount.frame++; | |
467 | else if (data & CyPARITY) | |
468 | info->icount.parity++; | |
469 | else if (data & CyOVERRUN) | |
470 | info->icount.overrun++; | |
471 | ||
472 | if (data & info->ignore_status_mask) { | |
473 | info->icount.rx++; | |
ce97a097 JS |
474 | return; |
475 | } | |
227434f8 | 476 | if (tty_buffer_request_room(port, 1)) { |
ce97a097 JS |
477 | if (data & info->read_status_mask) { |
478 | if (data & CyBREAK) { | |
92a19f9c | 479 | tty_insert_flip_char(port, |
3aeea5b9 JS |
480 | cyy_readb(info, CyRDSR), |
481 | TTY_BREAK); | |
ce97a097 | 482 | info->icount.rx++; |
6732c8bb JS |
483 | if (port->flags & ASYNC_SAK) { |
484 | struct tty_struct *tty = | |
485 | tty_port_tty_get(port); | |
486 | if (tty) { | |
487 | do_SAK(tty); | |
488 | tty_kref_put(tty); | |
489 | } | |
490 | } | |
ce97a097 | 491 | } else if (data & CyFRAME) { |
92a19f9c | 492 | tty_insert_flip_char(port, |
3aeea5b9 JS |
493 | cyy_readb(info, CyRDSR), |
494 | TTY_FRAME); | |
ce97a097 JS |
495 | info->icount.rx++; |
496 | info->idle_stats.frame_errs++; | |
497 | } else if (data & CyPARITY) { | |
498 | /* Pieces of seven... */ | |
92a19f9c | 499 | tty_insert_flip_char(port, |
3aeea5b9 JS |
500 | cyy_readb(info, CyRDSR), |
501 | TTY_PARITY); | |
ce97a097 JS |
502 | info->icount.rx++; |
503 | info->idle_stats.parity_errs++; | |
504 | } else if (data & CyOVERRUN) { | |
92a19f9c | 505 | tty_insert_flip_char(port, 0, |
ce97a097 JS |
506 | TTY_OVERRUN); |
507 | info->icount.rx++; | |
508 | /* If the flip buffer itself is | |
509 | overflowing, we still lose | |
510 | the next incoming character. | |
511 | */ | |
92a19f9c | 512 | tty_insert_flip_char(port, |
3aeea5b9 JS |
513 | cyy_readb(info, CyRDSR), |
514 | TTY_FRAME); | |
02f1175c | 515 | info->icount.rx++; |
02f1175c | 516 | info->idle_stats.overruns++; |
ce97a097 JS |
517 | /* These two conditions may imply */ |
518 | /* a normal read should be done. */ | |
519 | /* } else if(data & CyTIMEOUT) { */ | |
520 | /* } else if(data & CySPECHAR) { */ | |
521 | } else { | |
92a19f9c | 522 | tty_insert_flip_char(port, 0, |
ce97a097 JS |
523 | TTY_NORMAL); |
524 | info->icount.rx++; | |
02f1175c | 525 | } |
ce97a097 | 526 | } else { |
92a19f9c | 527 | tty_insert_flip_char(port, 0, TTY_NORMAL); |
ce97a097 JS |
528 | info->icount.rx++; |
529 | } | |
530 | } else { | |
531 | /* there was a software buffer overrun and nothing | |
532 | * could be done about it!!! */ | |
533 | info->icount.buf_overrun++; | |
534 | info->idle_stats.overruns++; | |
535 | } | |
536 | } else { /* normal character reception */ | |
537 | /* load # chars available from the chip */ | |
3aeea5b9 | 538 | char_count = cyy_readb(info, CyRDCR); |
e941027f JS |
539 | |
540 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
541 | ++info->mon.int_count; |
542 | info->mon.char_count += char_count; | |
543 | if (char_count > info->mon.char_max) | |
544 | info->mon.char_max = char_count; | |
545 | info->mon.char_last = char_count; | |
e941027f | 546 | #endif |
227434f8 | 547 | len = tty_buffer_request_room(port, char_count); |
ce97a097 | 548 | while (len--) { |
3aeea5b9 | 549 | data = cyy_readb(info, CyRDSR); |
92a19f9c | 550 | tty_insert_flip_char(port, data, TTY_NORMAL); |
ce97a097 JS |
551 | info->idle_stats.recv_bytes++; |
552 | info->icount.rx++; | |
e941027f | 553 | #ifdef CY_16Y_HACK |
ce97a097 | 554 | udelay(10L); |
e941027f | 555 | #endif |
e941027f | 556 | } |
ce97a097 | 557 | info->idle_stats.recv_idle = jiffies; |
e941027f | 558 | } |
6732c8bb JS |
559 | tty_schedule_flip(port); |
560 | ||
ce97a097 | 561 | /* end of service */ |
3aeea5b9 JS |
562 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
563 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 564 | } |
e941027f | 565 | |
65f76a82 | 566 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
567 | void __iomem *base_addr) |
568 | { | |
569 | struct cyclades_port *info; | |
d13549f8 | 570 | struct tty_struct *tty; |
65f76a82 JS |
571 | int char_count, index = cinfo->bus_index; |
572 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
573 | |
574 | /* Since we only get here when the transmit buffer | |
575 | is empty, we know we can always stuff a dozen | |
576 | characters. */ | |
e941027f | 577 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 578 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
579 | #endif |
580 | ||
ce97a097 | 581 | /* determine the channel & change to that context */ |
65f76a82 JS |
582 | save_xir = readb(base_addr + (CyTIR << index)); |
583 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
584 | save_car = readb(base_addr + (CyCAR << index)); |
585 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
586 | ||
ce97a097 | 587 | info = &cinfo->ports[channel + chip * 4]; |
d13549f8 JS |
588 | tty = tty_port_tty_get(&info->port); |
589 | if (tty == NULL) { | |
3aeea5b9 | 590 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
ce97a097 JS |
591 | goto end; |
592 | } | |
02f1175c | 593 | |
ce97a097 JS |
594 | /* load the on-chip space for outbound data */ |
595 | char_count = info->xmit_fifo_size; | |
02f1175c | 596 | |
ce97a097 JS |
597 | if (info->x_char) { /* send special char */ |
598 | outch = info->x_char; | |
3aeea5b9 | 599 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
600 | char_count--; |
601 | info->icount.tx++; | |
602 | info->x_char = 0; | |
603 | } | |
02f1175c | 604 | |
ce97a097 JS |
605 | if (info->breakon || info->breakoff) { |
606 | if (info->breakon) { | |
3aeea5b9 JS |
607 | cyy_writeb(info, CyTDR, 0); |
608 | cyy_writeb(info, CyTDR, 0x81); | |
ce97a097 JS |
609 | info->breakon = 0; |
610 | char_count -= 2; | |
e941027f | 611 | } |
ce97a097 | 612 | if (info->breakoff) { |
3aeea5b9 JS |
613 | cyy_writeb(info, CyTDR, 0); |
614 | cyy_writeb(info, CyTDR, 0x83); | |
ce97a097 JS |
615 | info->breakoff = 0; |
616 | char_count -= 2; | |
e941027f | 617 | } |
ce97a097 | 618 | } |
02f1175c | 619 | |
ce97a097 JS |
620 | while (char_count-- > 0) { |
621 | if (!info->xmit_cnt) { | |
3aeea5b9 JS |
622 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
623 | cyy_writeb(info, CySRER, | |
624 | cyy_readb(info, CySRER) & ~CyTxMpty); | |
ce97a097 | 625 | } else { |
3aeea5b9 JS |
626 | cyy_writeb(info, CySRER, CyTxMpty | |
627 | (cyy_readb(info, CySRER) & ~CyTxRdy)); | |
02f1175c | 628 | } |
ce97a097 JS |
629 | goto done; |
630 | } | |
77451e53 | 631 | if (info->port.xmit_buf == NULL) { |
3aeea5b9 JS |
632 | cyy_writeb(info, CySRER, |
633 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
634 | goto done; |
635 | } | |
d13549f8 | 636 | if (tty->stopped || tty->hw_stopped) { |
3aeea5b9 JS |
637 | cyy_writeb(info, CySRER, |
638 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
639 | goto done; |
640 | } | |
641 | /* Because the Embedded Transmit Commands have been enabled, | |
642 | * we must check to see if the escape character, NULL, is being | |
643 | * sent. If it is, we must ensure that there is room for it to | |
644 | * be doubled in the output stream. Therefore we no longer | |
645 | * advance the pointer when the character is fetched, but | |
646 | * rather wait until after the check for a NULL output | |
647 | * character. This is necessary because there may not be room | |
648 | * for the two chars needed to send a NULL.) | |
649 | */ | |
77451e53 | 650 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
651 | if (outch) { |
652 | info->xmit_cnt--; | |
653 | info->xmit_tail = (info->xmit_tail + 1) & | |
654 | (SERIAL_XMIT_SIZE - 1); | |
3aeea5b9 | 655 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
656 | info->icount.tx++; |
657 | } else { | |
658 | if (char_count > 1) { | |
02f1175c JS |
659 | info->xmit_cnt--; |
660 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 661 | (SERIAL_XMIT_SIZE - 1); |
3aeea5b9 JS |
662 | cyy_writeb(info, CyTDR, outch); |
663 | cyy_writeb(info, CyTDR, 0); | |
02f1175c | 664 | info->icount.tx++; |
ce97a097 | 665 | char_count--; |
02f1175c | 666 | } |
e941027f | 667 | } |
e941027f JS |
668 | } |
669 | ||
ce97a097 | 670 | done: |
d13549f8 JS |
671 | tty_wakeup(tty); |
672 | tty_kref_put(tty); | |
ce97a097 JS |
673 | end: |
674 | /* end of service */ | |
3aeea5b9 JS |
675 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
676 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 677 | } |
02f1175c | 678 | |
ce97a097 JS |
679 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
680 | void __iomem *base_addr) | |
681 | { | |
682 | struct cyclades_port *info; | |
d13549f8 | 683 | struct tty_struct *tty; |
65f76a82 JS |
684 | int index = cinfo->bus_index; |
685 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
686 | |
687 | /* determine the channel & change to that context */ | |
65f76a82 JS |
688 | save_xir = readb(base_addr + (CyMIR << index)); |
689 | channel = save_xir & CyIRChannel; | |
ce97a097 | 690 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
691 | save_car = cyy_readb(info, CyCAR); |
692 | cyy_writeb(info, CyCAR, save_xir); | |
ce97a097 | 693 | |
3aeea5b9 JS |
694 | mdm_change = cyy_readb(info, CyMISR); |
695 | mdm_status = cyy_readb(info, CyMSVR1); | |
ce97a097 | 696 | |
d13549f8 JS |
697 | tty = tty_port_tty_get(&info->port); |
698 | if (!tty) | |
ce97a097 JS |
699 | goto end; |
700 | ||
701 | if (mdm_change & CyANY_DELTA) { | |
702 | /* For statistics only */ | |
703 | if (mdm_change & CyDCD) | |
704 | info->icount.dcd++; | |
705 | if (mdm_change & CyCTS) | |
706 | info->icount.cts++; | |
707 | if (mdm_change & CyDSR) | |
708 | info->icount.dsr++; | |
709 | if (mdm_change & CyRI) | |
710 | info->icount.rng++; | |
711 | ||
bdc04e31 | 712 | wake_up_interruptible(&info->port.delta_msr_wait); |
ce97a097 JS |
713 | } |
714 | ||
2d68655d | 715 | if ((mdm_change & CyDCD) && tty_port_check_carrier(&info->port)) { |
174e6fe0 JS |
716 | if (mdm_status & CyDCD) |
717 | wake_up_interruptible(&info->port.open_wait); | |
718 | else | |
d13549f8 | 719 | tty_hangup(tty); |
ce97a097 | 720 | } |
f21ec3d2 | 721 | if ((mdm_change & CyCTS) && tty_port_cts_enabled(&info->port)) { |
d13549f8 | 722 | if (tty->hw_stopped) { |
ce97a097 JS |
723 | if (mdm_status & CyCTS) { |
724 | /* cy_start isn't used | |
725 | because... !!! */ | |
d13549f8 | 726 | tty->hw_stopped = 0; |
3aeea5b9 JS |
727 | cyy_writeb(info, CySRER, |
728 | cyy_readb(info, CySRER) | CyTxRdy); | |
d13549f8 | 729 | tty_wakeup(tty); |
02f1175c | 730 | } |
ce97a097 JS |
731 | } else { |
732 | if (!(mdm_status & CyCTS)) { | |
733 | /* cy_stop isn't used | |
734 | because ... !!! */ | |
d13549f8 | 735 | tty->hw_stopped = 1; |
3aeea5b9 JS |
736 | cyy_writeb(info, CySRER, |
737 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
02f1175c | 738 | } |
e941027f | 739 | } |
e941027f | 740 | } |
ce97a097 JS |
741 | /* if (mdm_change & CyDSR) { |
742 | } | |
743 | if (mdm_change & CyRI) { | |
744 | }*/ | |
d13549f8 | 745 | tty_kref_put(tty); |
ce97a097 JS |
746 | end: |
747 | /* end of service */ | |
3aeea5b9 JS |
748 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
749 | cyy_writeb(info, CyCAR, save_car); | |
e941027f JS |
750 | } |
751 | ||
1da177e4 LT |
752 | /* The real interrupt service routine is called |
753 | whenever the card wants its hand held--chars | |
754 | received, out buffer empty, modem change, etc. | |
755 | */ | |
02f1175c | 756 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 757 | { |
02f1175c | 758 | int status; |
f7429034 | 759 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 760 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 761 | unsigned int chip, too_many, had_work; |
02f1175c | 762 | int index; |
02f1175c | 763 | |
f7429034 | 764 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 765 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
766 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
767 | irq); | |
1da177e4 | 768 | #endif |
02f1175c JS |
769 | return IRQ_NONE; /* spurious interrupt */ |
770 | } | |
771 | ||
772 | card_base_addr = cinfo->base_addr; | |
773 | index = cinfo->bus_index; | |
774 | ||
f1e83c6c JS |
775 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
776 | if (unlikely(card_base_addr == NULL)) | |
777 | return IRQ_HANDLED; | |
778 | ||
02f1175c JS |
779 | /* This loop checks all chips in the card. Make a note whenever |
780 | _any_ chip had some work to do, as this is considered an | |
781 | indication that there will be more to do. Only when no chip | |
782 | has any work does this outermost loop exit. | |
783 | */ | |
784 | do { | |
785 | had_work = 0; | |
786 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
787 | base_addr = cinfo->base_addr + | |
788 | (cy_chip_offset[chip] << index); | |
789 | too_many = 0; | |
db05c3b1 | 790 | while ((status = readb(base_addr + |
02f1175c JS |
791 | (CySVRR << index))) != 0x00) { |
792 | had_work++; | |
793 | /* The purpose of the following test is to ensure that | |
794 | no chip can monopolize the driver. This forces the | |
795 | chips to be checked in a round-robin fashion (after | |
796 | draining each of a bunch (1000) of characters). | |
797 | */ | |
ce97a097 | 798 | if (1000 < too_many++) |
02f1175c | 799 | break; |
1c0a387c | 800 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
801 | if (status & CySRReceive) /* rx intr */ |
802 | cyy_chip_rx(cinfo, chip, base_addr); | |
803 | if (status & CySRTransmit) /* tx intr */ | |
804 | cyy_chip_tx(cinfo, chip, base_addr); | |
805 | if (status & CySRModem) /* modem intr */ | |
806 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 807 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
808 | } |
809 | } | |
810 | } while (had_work); | |
811 | ||
812 | /* clear interrupts */ | |
813 | spin_lock(&cinfo->card_lock); | |
814 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
815 | /* Cy_ClrIntr is 0x1800 */ | |
816 | spin_unlock(&cinfo->card_lock); | |
817 | return IRQ_HANDLED; | |
818 | } /* cyy_interrupt */ | |
1da177e4 | 819 | |
4d768200 JS |
820 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
821 | unsigned int clear) | |
822 | { | |
823 | struct cyclades_card *card = info->card; | |
3aeea5b9 | 824 | int channel = info->line - card->first_line; |
0d348729 | 825 | u32 rts, dtr, msvrr, msvrd; |
4d768200 | 826 | |
4d768200 | 827 | channel &= 0x03; |
4d768200 | 828 | |
0d348729 JS |
829 | if (info->rtsdtr_inv) { |
830 | msvrr = CyMSVR2; | |
831 | msvrd = CyMSVR1; | |
832 | rts = CyDTR; | |
833 | dtr = CyRTS; | |
834 | } else { | |
835 | msvrr = CyMSVR1; | |
836 | msvrd = CyMSVR2; | |
837 | rts = CyRTS; | |
838 | dtr = CyDTR; | |
839 | } | |
4d768200 | 840 | if (set & TIOCM_RTS) { |
3aeea5b9 JS |
841 | cyy_writeb(info, CyCAR, channel); |
842 | cyy_writeb(info, msvrr, rts); | |
4d768200 JS |
843 | } |
844 | if (clear & TIOCM_RTS) { | |
3aeea5b9 JS |
845 | cyy_writeb(info, CyCAR, channel); |
846 | cyy_writeb(info, msvrr, ~rts); | |
4d768200 JS |
847 | } |
848 | if (set & TIOCM_DTR) { | |
3aeea5b9 JS |
849 | cyy_writeb(info, CyCAR, channel); |
850 | cyy_writeb(info, msvrd, dtr); | |
4d768200 JS |
851 | #ifdef CY_DEBUG_DTR |
852 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
853 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
854 | cyy_readb(info, CyMSVR1), |
855 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
856 | #endif |
857 | } | |
858 | if (clear & TIOCM_DTR) { | |
3aeea5b9 JS |
859 | cyy_writeb(info, CyCAR, channel); |
860 | cyy_writeb(info, msvrd, ~dtr); | |
4d768200 JS |
861 | #ifdef CY_DEBUG_DTR |
862 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
863 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
864 | cyy_readb(info, CyMSVR1), |
865 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
866 | #endif |
867 | } | |
868 | } | |
869 | ||
1da177e4 LT |
870 | /***********************************************************/ |
871 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 872 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
873 | /***********************************************************/ |
874 | ||
875 | static int | |
02f1175c | 876 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 877 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 878 | { |
f0eefdc3 | 879 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
880 | unsigned long loc_doorbell; |
881 | ||
97e87f8e | 882 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
883 | if (loc_doorbell) { |
884 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
885 | *channel = readl(&board_ctrl->fwcmd_channel); |
886 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 887 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
888 | return 1; |
889 | } | |
890 | return 0; | |
891 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
892 | |
893 | static int | |
02f1175c | 894 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 895 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 896 | { |
f0eefdc3 | 897 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 898 | __u32 __iomem *pci_doorbell; |
65f76a82 | 899 | unsigned int index; |
02f1175c | 900 | |
2693f485 | 901 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 902 | return -1; |
15ed6cc0 | 903 | |
02f1175c | 904 | index = 0; |
97e87f8e | 905 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 906 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 907 | if (index++ == 1000) |
db05c3b1 | 908 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
909 | udelay(50L); |
910 | } | |
911 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
912 | cy_writel(&board_ctrl->hcmd_param, param); | |
913 | cy_writel(pci_doorbell, (long)cmd); | |
914 | ||
096dcfce | 915 | return 0; |
02f1175c | 916 | } /* cyz_issue_cmd */ |
1da177e4 | 917 | |
dabe2c13 | 918 | static void cyz_handle_rx(struct cyclades_port *info) |
1da177e4 | 919 | { |
f0eefdc3 | 920 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 921 | struct cyclades_card *cinfo = info->card; |
227434f8 | 922 | struct tty_port *port = &info->port; |
65f76a82 | 923 | unsigned int char_count; |
02f1175c | 924 | int len; |
1da177e4 | 925 | #ifdef BLOCKMOVE |
ce71b0ff | 926 | unsigned char *buf; |
1da177e4 | 927 | #else |
02f1175c | 928 | char data; |
1da177e4 | 929 | #endif |
ad39c300 | 930 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 931 | |
db05c3b1 JS |
932 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
933 | rx_put = readl(&buf_ctrl->rx_put); | |
934 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
935 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
936 | if (rx_put >= rx_get) |
937 | char_count = rx_put - rx_get; | |
938 | else | |
939 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 940 | |
dabe2c13 JS |
941 | if (!char_count) |
942 | return; | |
943 | ||
1da177e4 | 944 | #ifdef CY_ENABLE_MONITORING |
dabe2c13 JS |
945 | info->mon.int_count++; |
946 | info->mon.char_count += char_count; | |
947 | if (char_count > info->mon.char_max) | |
948 | info->mon.char_max = char_count; | |
949 | info->mon.char_last = char_count; | |
1da177e4 | 950 | #endif |
dabe2c13 | 951 | |
1da177e4 | 952 | #ifdef BLOCKMOVE |
dabe2c13 JS |
953 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
954 | for performance, but because of buffer boundaries, there | |
955 | may be several steps to the operation */ | |
956 | while (1) { | |
957 | len = tty_prepare_flip_string(port, &buf, | |
958 | char_count); | |
959 | if (!len) | |
960 | break; | |
ce71b0ff | 961 | |
dabe2c13 JS |
962 | len = min_t(unsigned int, min(len, char_count), |
963 | rx_bufsize - new_rx_get); | |
ce71b0ff | 964 | |
dabe2c13 JS |
965 | memcpy_fromio(buf, cinfo->base_addr + |
966 | rx_bufaddr + new_rx_get, len); | |
ce71b0ff | 967 | |
dabe2c13 JS |
968 | new_rx_get = (new_rx_get + len) & |
969 | (rx_bufsize - 1); | |
970 | char_count -= len; | |
971 | info->icount.rx += len; | |
972 | info->idle_stats.recv_bytes += len; | |
973 | } | |
1da177e4 | 974 | #else |
dabe2c13 JS |
975 | len = tty_buffer_request_room(port, char_count); |
976 | while (len--) { | |
977 | data = readb(cinfo->base_addr + rx_bufaddr + | |
978 | new_rx_get); | |
979 | new_rx_get = (new_rx_get + 1) & | |
980 | (rx_bufsize - 1); | |
981 | tty_insert_flip_char(port, data, TTY_NORMAL); | |
982 | info->idle_stats.recv_bytes++; | |
983 | info->icount.rx++; | |
984 | } | |
1da177e4 LT |
985 | #endif |
986 | #ifdef CONFIG_CYZ_INTR | |
dabe2c13 JS |
987 | /* Recalculate the number of chars in the RX buffer and issue |
988 | a cmd in case it's higher than the RX high water mark */ | |
989 | rx_put = readl(&buf_ctrl->rx_put); | |
990 | if (rx_put >= rx_get) | |
991 | char_count = rx_put - rx_get; | |
992 | else | |
993 | char_count = rx_put - rx_get + rx_bufsize; | |
994 | if (char_count >= readl(&buf_ctrl->rx_threshold) && | |
a8497b31 KC |
995 | !timer_pending(&info->rx_full_timer)) |
996 | mod_timer(&info->rx_full_timer, jiffies + 1); | |
1da177e4 | 997 | #endif |
dabe2c13 JS |
998 | info->idle_stats.recv_idle = jiffies; |
999 | tty_schedule_flip(&info->port); | |
1000 | ||
1001 | /* Update rx_get */ | |
1002 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 LT |
1003 | } |
1004 | ||
dabe2c13 | 1005 | static void cyz_handle_tx(struct cyclades_port *info) |
1da177e4 | 1006 | { |
f0eefdc3 | 1007 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1008 | struct cyclades_card *cinfo = info->card; |
dabe2c13 | 1009 | struct tty_struct *tty; |
65f76a82 JS |
1010 | u8 data; |
1011 | unsigned int char_count; | |
1da177e4 | 1012 | #ifdef BLOCKMOVE |
02f1175c | 1013 | int small_count; |
1da177e4 | 1014 | #endif |
ad39c300 | 1015 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1016 | |
02f1175c JS |
1017 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1018 | return; | |
1da177e4 | 1019 | |
db05c3b1 JS |
1020 | tx_get = readl(&buf_ctrl->tx_get); |
1021 | tx_put = readl(&buf_ctrl->tx_put); | |
1022 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1023 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1024 | if (tx_put >= tx_get) |
1025 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1026 | else | |
1027 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1028 | |
dabe2c13 JS |
1029 | if (!char_count) |
1030 | return; | |
1031 | ||
1032 | tty = tty_port_tty_get(&info->port); | |
1033 | if (tty == NULL) | |
1034 | goto ztxdone; | |
1da177e4 | 1035 | |
dabe2c13 JS |
1036 | if (info->x_char) { /* send special char */ |
1037 | data = info->x_char; | |
1da177e4 | 1038 | |
dabe2c13 JS |
1039 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1040 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1041 | info->x_char = 0; | |
1042 | char_count--; | |
1043 | info->icount.tx++; | |
1044 | } | |
1da177e4 | 1045 | #ifdef BLOCKMOVE |
dabe2c13 JS |
1046 | while (0 < (small_count = min_t(unsigned int, |
1047 | tx_bufsize - tx_put, min_t(unsigned int, | |
1048 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1049 | min_t(unsigned int, info->xmit_cnt, | |
1050 | char_count))))) { | |
1051 | ||
1052 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put), | |
1053 | &info->port.xmit_buf[info->xmit_tail], | |
1054 | small_count); | |
1055 | ||
1056 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1057 | char_count -= small_count; | |
1058 | info->icount.tx += small_count; | |
1059 | info->xmit_cnt -= small_count; | |
1060 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1061 | (SERIAL_XMIT_SIZE - 1); | |
1062 | } | |
1da177e4 | 1063 | #else |
dabe2c13 JS |
1064 | while (info->xmit_cnt && char_count) { |
1065 | data = info->port.xmit_buf[info->xmit_tail]; | |
1066 | info->xmit_cnt--; | |
1067 | info->xmit_tail = (info->xmit_tail + 1) & | |
1068 | (SERIAL_XMIT_SIZE - 1); | |
1069 | ||
1070 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1071 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1072 | char_count--; | |
1073 | info->icount.tx++; | |
1074 | } | |
1da177e4 | 1075 | #endif |
dabe2c13 JS |
1076 | tty_wakeup(tty); |
1077 | tty_kref_put(tty); | |
7fa57a0c | 1078 | ztxdone: |
dabe2c13 JS |
1079 | /* Update tx_put */ |
1080 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 LT |
1081 | } |
1082 | ||
02f1175c | 1083 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1084 | { |
f0eefdc3 | 1085 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c | 1086 | struct cyclades_port *info; |
101b8159 | 1087 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1088 | __u8 cmd; |
02f1175c JS |
1089 | int special_count; |
1090 | int delta_count; | |
1091 | ||
db05c3b1 | 1092 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1093 | |
1094 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1095 | special_count = 0; | |
1096 | delta_count = 0; | |
dd025c0c | 1097 | info = &cinfo->ports[channel]; |
f7429034 | 1098 | |
02f1175c JS |
1099 | switch (cmd) { |
1100 | case C_CM_PR_ERROR: | |
92a19f9c | 1101 | tty_insert_flip_char(&info->port, 0, TTY_PARITY); |
02f1175c JS |
1102 | info->icount.rx++; |
1103 | special_count++; | |
1104 | break; | |
1105 | case C_CM_FR_ERROR: | |
92a19f9c | 1106 | tty_insert_flip_char(&info->port, 0, TTY_FRAME); |
02f1175c JS |
1107 | info->icount.rx++; |
1108 | special_count++; | |
1109 | break; | |
1110 | case C_CM_RXBRK: | |
92a19f9c | 1111 | tty_insert_flip_char(&info->port, 0, TTY_BREAK); |
02f1175c JS |
1112 | info->icount.rx++; |
1113 | special_count++; | |
1114 | break; | |
1115 | case C_CM_MDCD: | |
1116 | info->icount.dcd++; | |
1117 | delta_count++; | |
2d68655d | 1118 | if (tty_port_check_carrier(&info->port)) { |
f0eefdc3 JS |
1119 | u32 dcd = fw_ver > 241 ? param : |
1120 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1121 | if (dcd & C_RS_DCD) |
77451e53 | 1122 | wake_up_interruptible(&info->port.open_wait); |
aa27a094 JS |
1123 | else |
1124 | tty_port_tty_hangup(&info->port, false); | |
02f1175c JS |
1125 | } |
1126 | break; | |
1127 | case C_CM_MCTS: | |
1128 | info->icount.cts++; | |
1129 | delta_count++; | |
1130 | break; | |
1131 | case C_CM_MRI: | |
1132 | info->icount.rng++; | |
1133 | delta_count++; | |
1134 | break; | |
1135 | case C_CM_MDSR: | |
1136 | info->icount.dsr++; | |
1137 | delta_count++; | |
1138 | break; | |
1da177e4 | 1139 | #ifdef Z_WAKE |
02f1175c | 1140 | case C_CM_IOCTLW: |
ebafeeff | 1141 | complete(&info->shutdown_wait); |
02f1175c | 1142 | break; |
1da177e4 LT |
1143 | #endif |
1144 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1145 | case C_CM_RXHIWM: |
1146 | case C_CM_RXNNDT: | |
1147 | case C_CM_INTBACK2: | |
1148 | /* Reception Interrupt */ | |
1da177e4 | 1149 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1150 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1151 | "port %ld\n", info->card, channel); | |
1da177e4 | 1152 | #endif |
dabe2c13 | 1153 | cyz_handle_rx(info); |
02f1175c JS |
1154 | break; |
1155 | case C_CM_TXBEMPTY: | |
1156 | case C_CM_TXLOWWM: | |
1157 | case C_CM_INTBACK: | |
1158 | /* Transmission Interrupt */ | |
1da177e4 | 1159 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1160 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1161 | "port %ld\n", info->card, channel); | |
1da177e4 | 1162 | #endif |
dabe2c13 | 1163 | cyz_handle_tx(info); |
02f1175c JS |
1164 | break; |
1165 | #endif /* CONFIG_CYZ_INTR */ | |
1166 | case C_CM_FATAL: | |
1167 | /* should do something with this !!! */ | |
1168 | break; | |
1169 | default: | |
1170 | break; | |
1171 | } | |
1172 | if (delta_count) | |
bdc04e31 | 1173 | wake_up_interruptible(&info->port.delta_msr_wait); |
02f1175c | 1174 | if (special_count) |
6732c8bb | 1175 | tty_schedule_flip(&info->port); |
1da177e4 | 1176 | } |
1da177e4 LT |
1177 | } |
1178 | ||
1179 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1180 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1181 | { |
f7429034 | 1182 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1183 | |
2693f485 | 1184 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1185 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1186 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1187 | "(IRQ%d).\n", irq); | |
1da177e4 | 1188 | #endif |
02f1175c JS |
1189 | return IRQ_NONE; |
1190 | } | |
1da177e4 | 1191 | |
02f1175c JS |
1192 | /* Handle the interrupts */ |
1193 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1194 | |
02f1175c JS |
1195 | return IRQ_HANDLED; |
1196 | } /* cyz_interrupt */ | |
1da177e4 | 1197 | |
a8497b31 | 1198 | static void cyz_rx_restart(struct timer_list *t) |
1da177e4 | 1199 | { |
a8497b31 | 1200 | struct cyclades_port *info = from_timer(info, t, rx_full_timer); |
875b206b | 1201 | struct cyclades_card *card = info->card; |
02f1175c | 1202 | int retval; |
875b206b | 1203 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1204 | unsigned long flags; |
1205 | ||
9fa1b3b1 | 1206 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1207 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1208 | if (retval != 0) { |
21719191 | 1209 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1210 | info->line, retval); |
1211 | } | |
9fa1b3b1 | 1212 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1213 | } |
1214 | ||
02f1175c | 1215 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1216 | |
24ed960a | 1217 | static void cyz_poll(struct timer_list *unused) |
1da177e4 | 1218 | { |
02f1175c JS |
1219 | struct cyclades_card *cinfo; |
1220 | struct cyclades_port *info; | |
b7050906 | 1221 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1222 | unsigned int port, card; |
1da177e4 | 1223 | |
02f1175c JS |
1224 | for (card = 0; card < NR_CARDS; card++) { |
1225 | cinfo = &cy_card[card]; | |
1226 | ||
2693f485 | 1227 | if (!cy_is_Z(cinfo)) |
02f1175c | 1228 | continue; |
2693f485 | 1229 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1230 | continue; |
1231 | ||
1da177e4 | 1232 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1233 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1234 | cinfo->intr_enabled = 1; |
1235 | continue; | |
1236 | } | |
1da177e4 | 1237 | |
02f1175c | 1238 | cyz_handle_cmd(cinfo); |
1da177e4 | 1239 | |
02f1175c | 1240 | for (port = 0; port < cinfo->nports; port++) { |
dd025c0c | 1241 | info = &cinfo->ports[port]; |
d13549f8 | 1242 | |
02f1175c | 1243 | if (!info->throttle) |
dabe2c13 JS |
1244 | cyz_handle_rx(info); |
1245 | cyz_handle_tx(info); | |
02f1175c JS |
1246 | } |
1247 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1248 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1249 | } |
b7050906 | 1250 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1251 | } /* cyz_poll */ |
1da177e4 | 1252 | |
02f1175c | 1253 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1254 | |
1255 | /********** End of block of Cyclades-Z specific code *********/ | |
1256 | /***********************************************************/ | |
1257 | ||
1da177e4 LT |
1258 | /* This is called whenever a port becomes active; |
1259 | interrupts are enabled and DTR & RTS are turned on. | |
1260 | */ | |
d13549f8 | 1261 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1262 | { |
875b206b | 1263 | struct cyclades_card *card; |
02f1175c JS |
1264 | unsigned long flags; |
1265 | int retval = 0; | |
cc7fdf49 | 1266 | int channel; |
02f1175c | 1267 | unsigned long page; |
1da177e4 | 1268 | |
02f1175c | 1269 | card = info->card; |
875b206b | 1270 | channel = info->line - card->first_line; |
1da177e4 | 1271 | |
02f1175c JS |
1272 | page = get_zeroed_page(GFP_KERNEL); |
1273 | if (!page) | |
1274 | return -ENOMEM; | |
1da177e4 | 1275 | |
9fa1b3b1 | 1276 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1277 | |
d41861ca | 1278 | if (tty_port_initialized(&info->port)) |
02f1175c | 1279 | goto errout; |
1da177e4 | 1280 | |
02f1175c | 1281 | if (!info->type) { |
d13549f8 | 1282 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1283 | goto errout; |
1284 | } | |
1da177e4 | 1285 | |
77451e53 | 1286 | if (info->port.xmit_buf) |
02f1175c JS |
1287 | free_page(page); |
1288 | else | |
77451e53 | 1289 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1290 | |
9fa1b3b1 | 1291 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1292 | |
d13549f8 | 1293 | cy_set_line_char(info, tty); |
1da177e4 | 1294 | |
2693f485 | 1295 | if (!cy_is_Z(card)) { |
02f1175c | 1296 | channel &= 0x03; |
1da177e4 | 1297 | |
9fa1b3b1 | 1298 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1299 | |
3aeea5b9 | 1300 | cyy_writeb(info, CyCAR, channel); |
1da177e4 | 1301 | |
3aeea5b9 | 1302 | cyy_writeb(info, CyRTPR, |
02f1175c JS |
1303 | (info->default_timeout ? info->default_timeout : 0x02)); |
1304 | /* 10ms rx timeout */ | |
1da177e4 | 1305 | |
3aeea5b9 | 1306 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
1da177e4 | 1307 | |
4d768200 | 1308 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1309 | |
3aeea5b9 | 1310 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
02f1175c | 1311 | } else { |
f0eefdc3 | 1312 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1313 | |
2693f485 | 1314 | if (!cyz_is_loaded(card)) |
02f1175c | 1315 | return -ENODEV; |
1da177e4 | 1316 | |
1da177e4 | 1317 | #ifdef CY_DEBUG_OPEN |
21719191 | 1318 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1319 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1320 | #endif |
9fa1b3b1 | 1321 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1322 | |
f0eefdc3 | 1323 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1324 | #ifdef Z_WAKE |
1325 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1326 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1327 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1328 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1329 | #else |
f0eefdc3 | 1330 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1331 | C_IN_IOCTLW | C_IN_MDCD); |
1332 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1333 | #else |
1334 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1335 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1336 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1337 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1338 | #else |
f0eefdc3 | 1339 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1340 | #endif /* CONFIG_CYZ_INTR */ |
1341 | #endif /* Z_WAKE */ | |
1342 | ||
875b206b | 1343 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1344 | if (retval != 0) { |
21719191 JS |
1345 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1346 | "%x\n", info->line, retval); | |
02f1175c | 1347 | } |
1da177e4 | 1348 | |
02f1175c | 1349 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1350 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1351 | if (retval != 0) { |
21719191 JS |
1352 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1353 | "%x\n", info->line, retval); | |
02f1175c | 1354 | } |
1da177e4 | 1355 | |
02f1175c JS |
1356 | /* set timeout !!! */ |
1357 | /* set RTS and DTR !!! */ | |
4d768200 | 1358 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1359 | |
02f1175c | 1360 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1361 | } |
02f1175c | 1362 | |
d41861ca | 1363 | tty_port_set_initialized(&info->port, 1); |
1da177e4 | 1364 | |
cc7fdf49 JS |
1365 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1366 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1367 | info->breakon = info->breakoff = 0; | |
1368 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1369 | info->idle_stats.in_use = | |
1370 | info->idle_stats.recv_idle = | |
1371 | info->idle_stats.xmit_idle = jiffies; | |
1372 | ||
1373 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1374 | |
1375 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1376 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1377 | #endif |
1378 | return 0; | |
1379 | ||
1380 | errout: | |
9fa1b3b1 | 1381 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1382 | free_page(page); |
1da177e4 | 1383 | return retval; |
02f1175c | 1384 | } /* startup */ |
1da177e4 | 1385 | |
02f1175c | 1386 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1387 | { |
3aeea5b9 | 1388 | struct cyclades_card *card = info->card; |
02f1175c | 1389 | unsigned long flags; |
3aeea5b9 | 1390 | int channel = info->line - card->first_line; |
1da177e4 | 1391 | |
2693f485 | 1392 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1393 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
1394 | cyy_writeb(info, CyCAR, channel & 0x03); |
1395 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 1396 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1397 | } else { |
1da177e4 | 1398 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1399 | int retval; |
1da177e4 | 1400 | |
9fa1b3b1 | 1401 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1402 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1403 | if (retval != 0) { |
21719191 JS |
1404 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1405 | "%x\n", info->line, retval); | |
02f1175c | 1406 | } |
9fa1b3b1 | 1407 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1408 | #else /* CONFIG_CYZ_INTR */ |
1409 | /* Don't have to do anything at this time */ | |
1410 | #endif /* CONFIG_CYZ_INTR */ | |
1411 | } | |
1412 | } /* start_xmit */ | |
1da177e4 LT |
1413 | |
1414 | /* | |
1415 | * This routine shuts down a serial port; interrupts are disabled, | |
1416 | * and DTR is dropped if the hangup on close termio flag is on. | |
1417 | */ | |
d13549f8 | 1418 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1419 | { |
875b206b | 1420 | struct cyclades_card *card; |
02f1175c | 1421 | unsigned long flags; |
02f1175c | 1422 | |
d41861ca | 1423 | if (!tty_port_initialized(&info->port)) |
02f1175c | 1424 | return; |
02f1175c JS |
1425 | |
1426 | card = info->card; | |
2693f485 | 1427 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1428 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1429 | |
1430 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
bdc04e31 | 1431 | wake_up_interruptible(&info->port.delta_msr_wait); |
1da177e4 | 1432 | |
77451e53 | 1433 | if (info->port.xmit_buf) { |
02f1175c | 1434 | unsigned char *temp; |
77451e53 AC |
1435 | temp = info->port.xmit_buf; |
1436 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1437 | free_page((unsigned long)temp); |
1438 | } | |
9db276f8 | 1439 | if (C_HUPCL(tty)) |
4d768200 JS |
1440 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); |
1441 | ||
3aeea5b9 | 1442 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
02f1175c JS |
1443 | /* it may be appropriate to clear _XMIT at |
1444 | some later date (after testing)!!! */ | |
1445 | ||
d13549f8 | 1446 | set_bit(TTY_IO_ERROR, &tty->flags); |
d41861ca | 1447 | tty_port_set_initialized(&info->port, 0); |
9fa1b3b1 | 1448 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1449 | } else { |
1da177e4 | 1450 | #ifdef CY_DEBUG_OPEN |
0e7f4194 | 1451 | int channel = info->line - card->first_line; |
21719191 | 1452 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1453 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1454 | #endif |
1455 | ||
2693f485 | 1456 | if (!cyz_is_loaded(card)) |
02f1175c | 1457 | return; |
1da177e4 | 1458 | |
9fa1b3b1 | 1459 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1460 | |
77451e53 | 1461 | if (info->port.xmit_buf) { |
02f1175c | 1462 | unsigned char *temp; |
77451e53 AC |
1463 | temp = info->port.xmit_buf; |
1464 | info->port.xmit_buf = NULL; | |
02f1175c | 1465 | free_page((unsigned long)temp); |
1da177e4 | 1466 | } |
02f1175c | 1467 | |
9db276f8 | 1468 | if (C_HUPCL(tty)) |
4d768200 | 1469 | tty_port_lower_dtr_rts(&info->port); |
1da177e4 | 1470 | |
d13549f8 | 1471 | set_bit(TTY_IO_ERROR, &tty->flags); |
d41861ca | 1472 | tty_port_set_initialized(&info->port, 0); |
02f1175c | 1473 | |
9fa1b3b1 | 1474 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1475 | } |
1da177e4 LT |
1476 | |
1477 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1478 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1479 | #endif |
02f1175c | 1480 | } /* shutdown */ |
1da177e4 LT |
1481 | |
1482 | /* | |
1483 | * ------------------------------------------------------------ | |
1484 | * cy_open() and friends | |
1485 | * ------------------------------------------------------------ | |
1486 | */ | |
1487 | ||
1da177e4 LT |
1488 | /* |
1489 | * This routine is called whenever a serial port is opened. It | |
1490 | * performs the serial-specific initialization for the tty structure. | |
1491 | */ | |
02f1175c | 1492 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1493 | { |
02f1175c | 1494 | struct cyclades_port *info; |
410235fd | 1495 | unsigned int i, line = tty->index; |
65f76a82 | 1496 | int retval; |
1da177e4 | 1497 | |
dd025c0c JS |
1498 | for (i = 0; i < NR_CARDS; i++) |
1499 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1500 | line >= cy_card[i].first_line) | |
1501 | break; | |
1502 | if (i >= NR_CARDS) | |
1503 | return -ENODEV; | |
1504 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1505 | if (info->line < 0) |
02f1175c | 1506 | return -ENODEV; |
1da177e4 | 1507 | |
02f1175c JS |
1508 | /* If the card's firmware hasn't been loaded, |
1509 | treat it as absent from the system. This | |
1510 | will make the user pay attention. | |
1511 | */ | |
2693f485 | 1512 | if (cy_is_Z(info->card)) { |
875b206b | 1513 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1514 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1515 | ||
2693f485 JS |
1516 | if (!cyz_is_loaded(cinfo)) { |
1517 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1518 | readl(&firm_id->signature) == |
1519 | ZFIRM_HLT) { | |
21719191 JS |
1520 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1521 | "need an external power supply for " | |
1522 | "this number of ports.\nFirmware " | |
1523 | "halted.\n"); | |
02f1175c | 1524 | } else { |
21719191 JS |
1525 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1526 | "yet loaded\n"); | |
02f1175c JS |
1527 | } |
1528 | return -ENODEV; | |
1529 | } | |
1530 | #ifdef CONFIG_CYZ_INTR | |
1531 | else { | |
1532 | /* In case this Z board is operating in interrupt mode, its | |
1533 | interrupts should be enabled as soon as the first open | |
1534 | happens to one of its ports. */ | |
1535 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1536 | u16 intr; |
02f1175c | 1537 | |
02f1175c | 1538 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1539 | intr = readw(&cinfo->ctl_addr.p9060-> |
1540 | intr_ctrl_stat) | 0x0900; | |
1541 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1542 | intr_ctrl_stat, intr); | |
02f1175c JS |
1543 | /* Enable interrupts on the FW */ |
1544 | retval = cyz_issue_cmd(cinfo, 0, | |
1545 | C_CM_IRQ_ENBL, 0L); | |
1546 | if (retval != 0) { | |
21719191 JS |
1547 | printk(KERN_ERR "cyc:IRQ enable retval " |
1548 | "was %x\n", retval); | |
02f1175c | 1549 | } |
02f1175c JS |
1550 | cinfo->intr_enabled = 1; |
1551 | } | |
1da177e4 | 1552 | } |
02f1175c JS |
1553 | #endif /* CONFIG_CYZ_INTR */ |
1554 | /* Make sure this Z port really exists in hardware */ | |
1555 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1556 | return -ENODEV; | |
1da177e4 | 1557 | } |
1da177e4 | 1558 | #ifdef CY_DEBUG_OTHER |
21719191 | 1559 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1560 | #endif |
02f1175c | 1561 | tty->driver_data = info; |
15ed6cc0 | 1562 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1563 | return -ENODEV; |
15ed6cc0 | 1564 | |
1da177e4 | 1565 | #ifdef CY_DEBUG_OPEN |
21719191 | 1566 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1567 | info->port.count); |
1da177e4 | 1568 | #endif |
77451e53 | 1569 | info->port.count++; |
1da177e4 | 1570 | #ifdef CY_DEBUG_COUNT |
21719191 | 1571 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1572 | current->pid, info->port.count); |
1da177e4 | 1573 | #endif |
1da177e4 | 1574 | |
02f1175c JS |
1575 | /* |
1576 | * Start up serial port | |
1577 | */ | |
d13549f8 | 1578 | retval = cy_startup(info, tty); |
15ed6cc0 | 1579 | if (retval) |
02f1175c | 1580 | return retval; |
1da177e4 | 1581 | |
f0737579 | 1582 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1583 | if (retval) { |
1da177e4 | 1584 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1585 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1586 | "with %d\n", retval); | |
1da177e4 | 1587 | #endif |
02f1175c JS |
1588 | return retval; |
1589 | } | |
1da177e4 | 1590 | |
02f1175c | 1591 | info->throttle = 0; |
d13549f8 | 1592 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1593 | |
02f1175c | 1594 | #ifdef CY_DEBUG_OPEN |
21719191 | 1595 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1596 | #endif |
1597 | return 0; | |
1598 | } /* cy_open */ | |
1da177e4 LT |
1599 | |
1600 | /* | |
1601 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1602 | */ | |
02f1175c | 1603 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1604 | { |
875b206b | 1605 | struct cyclades_card *card; |
cab9bdd1 | 1606 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1607 | unsigned long orig_jiffies; |
1608 | int char_time; | |
1609 | ||
1610 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1611 | return; | |
1612 | ||
1613 | if (info->xmit_fifo_size == 0) | |
1614 | return; /* Just in case.... */ | |
1da177e4 | 1615 | |
02f1175c JS |
1616 | orig_jiffies = jiffies; |
1617 | /* | |
1618 | * Set the check interval to be 1/5 of the estimated time to | |
1619 | * send a single character, and make it at least 1. The check | |
1620 | * interval should also be less than the timeout. | |
1621 | * | |
1622 | * Note: we have to use pretty tight timings here to satisfy | |
1623 | * the NIST-PCTS. | |
1624 | */ | |
1625 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1626 | char_time = char_time / 5; | |
1627 | if (char_time <= 0) | |
1628 | char_time = 1; | |
1629 | if (timeout < 0) | |
1630 | timeout = 0; | |
1631 | if (timeout) | |
1632 | char_time = min(char_time, timeout); | |
1633 | /* | |
1634 | * If the transmitter hasn't cleared in twice the approximate | |
1635 | * amount of time to send the entire FIFO, it probably won't | |
1636 | * ever clear. This assumes the UART isn't doing flow | |
1637 | * control, which is currently the case. Hence, if it ever | |
1638 | * takes longer than info->timeout, this is probably due to a | |
1639 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1640 | * 2*info->timeout. | |
1641 | */ | |
1642 | if (!timeout || timeout > 2 * info->timeout) | |
1643 | timeout = 2 * info->timeout; | |
8bab534b | 1644 | |
02f1175c | 1645 | card = info->card; |
2693f485 | 1646 | if (!cy_is_Z(card)) { |
3aeea5b9 | 1647 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
02f1175c JS |
1648 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1649 | break; | |
1650 | if (timeout && time_after(jiffies, orig_jiffies + | |
1651 | timeout)) | |
1652 | break; | |
1653 | } | |
1da177e4 | 1654 | } |
02f1175c JS |
1655 | /* Run one more char cycle */ |
1656 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 LT |
1657 | } |
1658 | ||
978e595f AC |
1659 | static void cy_flush_buffer(struct tty_struct *tty) |
1660 | { | |
1661 | struct cyclades_port *info = tty->driver_data; | |
1662 | struct cyclades_card *card; | |
1663 | int channel, retval; | |
1664 | unsigned long flags; | |
1665 | ||
1666 | #ifdef CY_DEBUG_IO | |
1667 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1668 | #endif | |
1669 | ||
1670 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1671 | return; | |
1672 | ||
1673 | card = info->card; | |
1674 | channel = info->line - card->first_line; | |
1675 | ||
1676 | spin_lock_irqsave(&card->card_lock, flags); | |
1677 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1678 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1679 | ||
2693f485 | 1680 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1681 | buffers as well */ |
1682 | spin_lock_irqsave(&card->card_lock, flags); | |
1683 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1684 | if (retval != 0) { | |
1685 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1686 | "was %x\n", info->line, retval); | |
1687 | } | |
1688 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1689 | } | |
1690 | tty_wakeup(tty); | |
1691 | } /* cy_flush_buffer */ | |
1692 | ||
1693 | ||
e936ffd5 | 1694 | static void cy_do_close(struct tty_port *port) |
1da177e4 | 1695 | { |
e936ffd5 AC |
1696 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
1697 | port); | |
9fa1b3b1 | 1698 | struct cyclades_card *card; |
02f1175c | 1699 | unsigned long flags; |
3aeea5b9 | 1700 | int channel; |
1da177e4 | 1701 | |
9fa1b3b1 | 1702 | card = info->card; |
3aeea5b9 | 1703 | channel = info->line - card->first_line; |
9fa1b3b1 | 1704 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1705 | |
2693f485 | 1706 | if (!cy_is_Z(card)) { |
02f1175c | 1707 | /* Stop accepting input */ |
3aeea5b9 JS |
1708 | cyy_writeb(info, CyCAR, channel & 0x03); |
1709 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); | |
d41861ca | 1710 | if (tty_port_initialized(&info->port)) { |
15ed6cc0 AC |
1711 | /* Waiting for on-board buffers to be empty before |
1712 | closing the port */ | |
9fa1b3b1 | 1713 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 | 1714 | cy_wait_until_sent(port->tty, info->timeout); |
9fa1b3b1 | 1715 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1716 | } |
1717 | } else { | |
1718 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1719 | /* Waiting for on-board buffers to be empty before closing |
1720 | the port */ | |
f0eefdc3 | 1721 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
1722 | int retval; |
1723 | ||
f0eefdc3 | 1724 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1725 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1726 | if (retval != 0) { |
21719191 JS |
1727 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1728 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1729 | } |
9fa1b3b1 | 1730 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1731 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1732 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1733 | } |
1da177e4 | 1734 | #endif |
02f1175c | 1735 | } |
9fa1b3b1 | 1736 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 AC |
1737 | cy_shutdown(info, port->tty); |
1738 | } | |
1da177e4 | 1739 | |
e936ffd5 AC |
1740 | /* |
1741 | * This routine is called when a particular tty device is closed. | |
1742 | */ | |
1743 | static void cy_close(struct tty_struct *tty, struct file *filp) | |
1744 | { | |
1745 | struct cyclades_port *info = tty->driver_data; | |
1746 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) | |
1747 | return; | |
1748 | tty_port_close(&info->port, tty, filp); | |
02f1175c | 1749 | } /* cy_close */ |
1da177e4 LT |
1750 | |
1751 | /* This routine gets called when tty_write has put something into | |
1752 | * the write_queue. The characters may come from user space or | |
1753 | * kernel space. | |
1754 | * | |
1755 | * This routine will return the number of characters actually | |
1756 | * accepted for writing. | |
1757 | * | |
1758 | * If the port is not already transmitting stuff, start it off by | |
1759 | * enabling interrupts. The interrupt service routine will then | |
1760 | * ensure that the characters are sent. | |
1761 | * If the port is already active, there is no need to kick it. | |
1762 | * | |
1763 | */ | |
02f1175c | 1764 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1765 | { |
cab9bdd1 | 1766 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1767 | unsigned long flags; |
1768 | int c, ret = 0; | |
1da177e4 LT |
1769 | |
1770 | #ifdef CY_DEBUG_IO | |
21719191 | 1771 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1772 | #endif |
1773 | ||
15ed6cc0 | 1774 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1775 | return 0; |
1da177e4 | 1776 | |
77451e53 | 1777 | if (!info->port.xmit_buf) |
02f1175c | 1778 | return 0; |
1da177e4 | 1779 | |
9fa1b3b1 | 1780 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1781 | while (1) { |
1a4e2351 HH |
1782 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1783 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1784 | |
1785 | if (c <= 0) | |
1786 | break; | |
1787 | ||
77451e53 | 1788 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1789 | info->xmit_head = (info->xmit_head + c) & |
1790 | (SERIAL_XMIT_SIZE - 1); | |
1791 | info->xmit_cnt += c; | |
1792 | buf += c; | |
1793 | count -= c; | |
1794 | ret += c; | |
1795 | } | |
9fa1b3b1 | 1796 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1797 | |
1798 | info->idle_stats.xmit_bytes += ret; | |
1799 | info->idle_stats.xmit_idle = jiffies; | |
1800 | ||
15ed6cc0 | 1801 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1802 | start_xmit(info); |
15ed6cc0 | 1803 | |
02f1175c JS |
1804 | return ret; |
1805 | } /* cy_write */ | |
1da177e4 LT |
1806 | |
1807 | /* | |
1808 | * This routine is called by the kernel to write a single | |
1809 | * character to the tty device. If the kernel uses this routine, | |
1810 | * it must call the flush_chars() routine (if defined) when it is | |
1811 | * done stuffing characters into the driver. If there is no room | |
1812 | * in the queue, the character is ignored. | |
1813 | */ | |
76b25a55 | 1814 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1815 | { |
cab9bdd1 | 1816 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1817 | unsigned long flags; |
1da177e4 LT |
1818 | |
1819 | #ifdef CY_DEBUG_IO | |
21719191 | 1820 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1821 | #endif |
1822 | ||
02f1175c | 1823 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1824 | return 0; |
1da177e4 | 1825 | |
77451e53 | 1826 | if (!info->port.xmit_buf) |
76b25a55 | 1827 | return 0; |
1da177e4 | 1828 | |
9fa1b3b1 | 1829 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1830 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1831 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1832 | return 0; |
02f1175c | 1833 | } |
1da177e4 | 1834 | |
77451e53 | 1835 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1836 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1837 | info->xmit_cnt++; | |
1da177e4 LT |
1838 | info->idle_stats.xmit_bytes++; |
1839 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1840 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1841 | return 1; |
02f1175c | 1842 | } /* cy_put_char */ |
1da177e4 LT |
1843 | |
1844 | /* | |
1845 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1846 | * series of characters to the tty device using put_char(). |
1da177e4 | 1847 | */ |
02f1175c | 1848 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1849 | { |
cab9bdd1 | 1850 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1851 | |
1da177e4 | 1852 | #ifdef CY_DEBUG_IO |
21719191 | 1853 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1854 | #endif |
1855 | ||
02f1175c JS |
1856 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1857 | return; | |
1da177e4 | 1858 | |
02f1175c | 1859 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1860 | !info->port.xmit_buf) |
02f1175c | 1861 | return; |
1da177e4 | 1862 | |
02f1175c JS |
1863 | start_xmit(info); |
1864 | } /* cy_flush_chars */ | |
1da177e4 LT |
1865 | |
1866 | /* | |
1867 | * This routine returns the numbers of characters the tty driver | |
1868 | * will accept for queuing to be written. This number is subject | |
1869 | * to change as output buffers get emptied, or if the output flow | |
1870 | * control is activated. | |
1871 | */ | |
02f1175c | 1872 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1873 | { |
cab9bdd1 | 1874 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1875 | int ret; |
1876 | ||
1da177e4 | 1877 | #ifdef CY_DEBUG_IO |
21719191 | 1878 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1879 | #endif |
1880 | ||
02f1175c JS |
1881 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1882 | return 0; | |
1883 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1884 | if (ret < 0) | |
1885 | ret = 0; | |
1886 | return ret; | |
1887 | } /* cy_write_room */ | |
1da177e4 | 1888 | |
02f1175c | 1889 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1890 | { |
cab9bdd1 | 1891 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1892 | |
02f1175c JS |
1893 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1894 | return 0; | |
1895 | ||
1da177e4 | 1896 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 1897 | if (!cy_is_Z(info->card)) { |
02f1175c | 1898 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 1899 | #ifdef CY_DEBUG_IO |
21719191 JS |
1900 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1901 | info->line, info->xmit_cnt); | |
1da177e4 | 1902 | #endif |
02f1175c | 1903 | return info->xmit_cnt; |
1da177e4 | 1904 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 1905 | } else { |
f0eefdc3 | 1906 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 1907 | int char_count; |
ad39c300 | 1908 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 1909 | |
db05c3b1 JS |
1910 | tx_get = readl(&buf_ctrl->tx_get); |
1911 | tx_put = readl(&buf_ctrl->tx_put); | |
1912 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
1913 | if (tx_put >= tx_get) |
1914 | char_count = tx_put - tx_get; | |
1915 | else | |
1916 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 1917 | #ifdef CY_DEBUG_IO |
21719191 JS |
1918 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1919 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 1920 | #endif |
096dcfce | 1921 | return info->xmit_cnt + char_count; |
02f1175c JS |
1922 | } |
1923 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1924 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
1925 | |
1926 | /* | |
1927 | * ------------------------------------------------------------ | |
1928 | * cy_ioctl() and friends | |
1929 | * ------------------------------------------------------------ | |
1930 | */ | |
1931 | ||
1a86b5e3 | 1932 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 1933 | { |
02f1175c | 1934 | int co, co_val, bpr; |
1a86b5e3 | 1935 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 1936 | 25000000); |
1da177e4 | 1937 | |
02f1175c JS |
1938 | if (baud == 0) { |
1939 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
1940 | return; | |
1941 | } | |
1da177e4 | 1942 | |
02f1175c JS |
1943 | /* determine which prescaler to use */ |
1944 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
1945 | if (cy_clock / co_val / baud > 63) | |
1946 | break; | |
1947 | } | |
1da177e4 | 1948 | |
02f1175c JS |
1949 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
1950 | if (bpr > 255) | |
1951 | bpr = 255; | |
1da177e4 | 1952 | |
02f1175c JS |
1953 | info->tbpr = info->rbpr = bpr; |
1954 | info->tco = info->rco = co; | |
1da177e4 LT |
1955 | } |
1956 | ||
1957 | /* | |
1958 | * This routine finds or computes the various line characteristics. | |
1959 | * It used to be called config_setup | |
1960 | */ | |
d13549f8 | 1961 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1962 | { |
875b206b | 1963 | struct cyclades_card *card; |
02f1175c | 1964 | unsigned long flags; |
3aeea5b9 | 1965 | int channel; |
02f1175c | 1966 | unsigned cflag, iflag; |
02f1175c JS |
1967 | int baud, baud_rate = 0; |
1968 | int i; | |
1969 | ||
15ed6cc0 | 1970 | if (info->line == -1) |
02f1175c | 1971 | return; |
15ed6cc0 | 1972 | |
adc8d746 AC |
1973 | cflag = tty->termios.c_cflag; |
1974 | iflag = tty->termios.c_iflag; | |
1da177e4 | 1975 | |
02f1175c | 1976 | card = info->card; |
875b206b | 1977 | channel = info->line - card->first_line; |
02f1175c | 1978 | |
2693f485 | 1979 | if (!cy_is_Z(card)) { |
46fb7825 JS |
1980 | u32 cflags; |
1981 | ||
02f1175c | 1982 | /* baud rate */ |
d13549f8 | 1983 | baud = tty_get_baud_rate(tty); |
77451e53 | 1984 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
1985 | ASYNC_SPD_CUST) { |
1986 | if (info->custom_divisor) | |
1987 | baud_rate = info->baud / info->custom_divisor; | |
1988 | else | |
1989 | baud_rate = info->baud; | |
1990 | } else if (baud > CD1400_MAX_SPEED) { | |
1991 | baud = CD1400_MAX_SPEED; | |
1992 | } | |
1993 | /* find the baud index */ | |
1994 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 1995 | if (baud == baud_table[i]) |
02f1175c | 1996 | break; |
02f1175c | 1997 | } |
15ed6cc0 | 1998 | if (i == 20) |
02f1175c | 1999 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2000 | |
77451e53 | 2001 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2002 | ASYNC_SPD_CUST) { |
2003 | cyy_baud_calc(info, baud_rate); | |
2004 | } else { | |
2005 | if (info->chip_rev >= CD1400_REV_J) { | |
2006 | /* It is a CD1400 rev. J or later */ | |
2007 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2008 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2009 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2010 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2011 | } else { | |
2012 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2013 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2014 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2015 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2016 | } | |
2017 | } | |
2018 | if (baud_table[i] == 134) { | |
2019 | /* get it right for 134.5 baud */ | |
2020 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2021 | 2; | |
77451e53 | 2022 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2023 | ASYNC_SPD_CUST) { |
2024 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2025 | baud_rate) + 2; | |
2026 | } else if (baud_table[i]) { | |
2027 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2028 | baud_table[i]) + 2; | |
2029 | /* this needs to be propagated into the card info */ | |
2030 | } else { | |
2031 | info->timeout = 0; | |
2032 | } | |
2033 | /* By tradition (is it a standard?) a baud rate of zero | |
2034 | implies the line should be/has been closed. A bit | |
2035 | later in this routine such a test is performed. */ | |
2036 | ||
2037 | /* byte size and parity */ | |
2038 | info->cor5 = 0; | |
2039 | info->cor4 = 0; | |
2040 | /* receive threshold */ | |
2041 | info->cor3 = (info->default_threshold ? | |
2042 | info->default_threshold : baud_cor3[i]); | |
2043 | info->cor2 = CyETC; | |
2044 | switch (cflag & CSIZE) { | |
2045 | case CS5: | |
2046 | info->cor1 = Cy_5_BITS; | |
2047 | break; | |
2048 | case CS6: | |
2049 | info->cor1 = Cy_6_BITS; | |
2050 | break; | |
2051 | case CS7: | |
2052 | info->cor1 = Cy_7_BITS; | |
2053 | break; | |
2054 | case CS8: | |
2055 | info->cor1 = Cy_8_BITS; | |
2056 | break; | |
2057 | } | |
15ed6cc0 | 2058 | if (cflag & CSTOPB) |
02f1175c | 2059 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2060 | |
02f1175c | 2061 | if (cflag & PARENB) { |
15ed6cc0 | 2062 | if (cflag & PARODD) |
02f1175c | 2063 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2064 | else |
02f1175c | 2065 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2066 | } else |
02f1175c | 2067 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2068 | |
2069 | /* CTS flow control flag */ | |
5604a98e PH |
2070 | tty_port_set_cts_flow(&info->port, cflag & CRTSCTS); |
2071 | if (cflag & CRTSCTS) | |
02f1175c | 2072 | info->cor2 |= CyCtsAE; |
5604a98e | 2073 | else |
02f1175c | 2074 | info->cor2 &= ~CyCtsAE; |
2d68655d | 2075 | tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL); |
1da177e4 LT |
2076 | |
2077 | /*********************************************** | |
2078 | The hardware option, CyRtsAO, presents RTS when | |
2079 | the chip has characters to send. Since most modems | |
2080 | use RTS as reverse (inbound) flow control, this | |
2081 | option is not used. If inbound flow control is | |
2082 | necessary, DTR can be programmed to provide the | |
2083 | appropriate signals for use with a non-standard | |
2084 | cable. Contact Marcio Saito for details. | |
2085 | ***********************************************/ | |
2086 | ||
02f1175c | 2087 | channel &= 0x03; |
1da177e4 | 2088 | |
9fa1b3b1 | 2089 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2090 | cyy_writeb(info, CyCAR, channel); |
02f1175c JS |
2091 | |
2092 | /* tx and rx baud rate */ | |
2093 | ||
3aeea5b9 JS |
2094 | cyy_writeb(info, CyTCOR, info->tco); |
2095 | cyy_writeb(info, CyTBPR, info->tbpr); | |
2096 | cyy_writeb(info, CyRCOR, info->rco); | |
2097 | cyy_writeb(info, CyRBPR, info->rbpr); | |
02f1175c JS |
2098 | |
2099 | /* set line characteristics according configuration */ | |
2100 | ||
3aeea5b9 JS |
2101 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
2102 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); | |
2103 | cyy_writeb(info, CyCOR1, info->cor1); | |
2104 | cyy_writeb(info, CyCOR2, info->cor2); | |
2105 | cyy_writeb(info, CyCOR3, info->cor3); | |
2106 | cyy_writeb(info, CyCOR4, info->cor4); | |
2107 | cyy_writeb(info, CyCOR5, info->cor5); | |
02f1175c | 2108 | |
3aeea5b9 JS |
2109 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
2110 | CyCOR3ch); | |
02f1175c | 2111 | |
15ed6cc0 | 2112 | /* !!! Is this needed? */ |
3aeea5b9 JS |
2113 | cyy_writeb(info, CyCAR, channel); |
2114 | cyy_writeb(info, CyRTPR, | |
02f1175c JS |
2115 | (info->default_timeout ? info->default_timeout : 0x02)); |
2116 | /* 10ms rx timeout */ | |
2117 | ||
46fb7825 JS |
2118 | cflags = CyCTS; |
2119 | if (!C_CLOCAL(tty)) | |
2120 | cflags |= CyDSR | CyRI | CyDCD; | |
2121 | /* without modem intr */ | |
2122 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); | |
2123 | /* act on 1->0 modem transitions */ | |
2124 | if ((cflag & CRTSCTS) && info->rflow) | |
2125 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); | |
2126 | else | |
2127 | cyy_writeb(info, CyMCOR1, cflags); | |
2128 | /* act on 0->1 modem transitions */ | |
2129 | cyy_writeb(info, CyMCOR2, cflags); | |
02f1175c | 2130 | |
4d768200 JS |
2131 | if (i == 0) /* baud rate is zero, turn off line */ |
2132 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2133 | else | |
2134 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2135 | |
d13549f8 | 2136 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2137 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2138 | |
1da177e4 | 2139 | } else { |
f0eefdc3 | 2140 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2141 | __u32 sw_flow; |
02f1175c | 2142 | int retval; |
1da177e4 | 2143 | |
2693f485 | 2144 | if (!cyz_is_loaded(card)) |
02f1175c | 2145 | return; |
1da177e4 | 2146 | |
02f1175c | 2147 | /* baud rate */ |
d13549f8 | 2148 | baud = tty_get_baud_rate(tty); |
77451e53 | 2149 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2150 | ASYNC_SPD_CUST) { |
2151 | if (info->custom_divisor) | |
2152 | baud_rate = info->baud / info->custom_divisor; | |
2153 | else | |
2154 | baud_rate = info->baud; | |
2155 | } else if (baud > CYZ_MAX_SPEED) { | |
2156 | baud = CYZ_MAX_SPEED; | |
2157 | } | |
2158 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2159 | ||
2160 | if (baud == 134) { | |
2161 | /* get it right for 134.5 baud */ | |
2162 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2163 | 2; | |
77451e53 | 2164 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2165 | ASYNC_SPD_CUST) { |
2166 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2167 | baud_rate) + 2; | |
2168 | } else if (baud) { | |
2169 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2170 | baud) + 2; | |
2171 | /* this needs to be propagated into the card info */ | |
2172 | } else { | |
2173 | info->timeout = 0; | |
2174 | } | |
1da177e4 | 2175 | |
02f1175c JS |
2176 | /* byte size and parity */ |
2177 | switch (cflag & CSIZE) { | |
2178 | case CS5: | |
2179 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2180 | break; | |
2181 | case CS6: | |
2182 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2183 | break; | |
2184 | case CS7: | |
2185 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2186 | break; | |
2187 | case CS8: | |
2188 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2189 | break; | |
2190 | } | |
2191 | if (cflag & CSTOPB) { | |
2192 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2193 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2194 | } else { |
2195 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2196 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2197 | } |
2198 | if (cflag & PARENB) { | |
15ed6cc0 | 2199 | if (cflag & PARODD) |
02f1175c | 2200 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2201 | else |
02f1175c | 2202 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2203 | } else |
02f1175c | 2204 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2205 | |
02f1175c JS |
2206 | /* CTS flow control flag */ |
2207 | if (cflag & CRTSCTS) { | |
2208 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2209 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2210 | } else { |
db05c3b1 JS |
2211 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2212 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2213 | } |
2214 | /* As the HW flow control is done in firmware, the driver | |
2215 | doesn't need to care about it */ | |
5604a98e | 2216 | tty_port_set_cts_flow(&info->port, 0); |
02f1175c JS |
2217 | |
2218 | /* XON/XOFF/XANY flow control flags */ | |
2219 | sw_flow = 0; | |
2220 | if (iflag & IXON) { | |
2221 | sw_flow |= C_FL_OXX; | |
2222 | if (iflag & IXANY) | |
2223 | sw_flow |= C_FL_OIXANY; | |
2224 | } | |
2225 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2226 | ||
875b206b | 2227 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2228 | if (retval != 0) { |
21719191 JS |
2229 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2230 | "was %x\n", info->line, retval); | |
02f1175c JS |
2231 | } |
2232 | ||
2233 | /* CD sensitivity */ | |
2d68655d | 2234 | tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL); |
1da177e4 | 2235 | |
02f1175c JS |
2236 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2237 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2238 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2239 | #ifdef CY_DEBUG_DTR |
21719191 | 2240 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2241 | #endif |
02f1175c JS |
2242 | } else { |
2243 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2244 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2245 | #ifdef CY_DEBUG_DTR |
21719191 | 2246 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2247 | #endif |
02f1175c | 2248 | } |
1da177e4 | 2249 | |
15ed6cc0 | 2250 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2251 | if (retval != 0) { |
21719191 JS |
2252 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2253 | "was %x\n", info->line, retval); | |
02f1175c | 2254 | } |
1da177e4 | 2255 | |
d13549f8 | 2256 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2257 | } |
02f1175c | 2258 | } /* set_line_char */ |
1da177e4 | 2259 | |
6fbf9582 AV |
2260 | static int cy_get_serial_info(struct tty_struct *tty, |
2261 | struct serial_struct *ss) | |
1da177e4 | 2262 | { |
6fbf9582 | 2263 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2264 | struct cyclades_card *cinfo = info->card; |
6fbf9582 AV |
2265 | |
2266 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2267 | return -ENODEV; | |
2268 | ss->type = info->type; | |
2269 | ss->line = info->line; | |
2270 | ss->port = (info->card - cy_card) * 0x100 + info->line - | |
2271 | cinfo->first_line; | |
2272 | ss->irq = cinfo->irq; | |
2273 | ss->flags = info->port.flags; | |
2274 | ss->close_delay = info->port.close_delay; | |
2275 | ss->closing_wait = info->port.closing_wait; | |
2276 | ss->baud_base = info->baud; | |
2277 | ss->custom_divisor = info->custom_divisor; | |
2278 | return 0; | |
6c28181c | 2279 | } |
1da177e4 | 2280 | |
6fbf9582 AV |
2281 | static int cy_set_serial_info(struct tty_struct *tty, |
2282 | struct serial_struct *ss) | |
1da177e4 | 2283 | { |
6fbf9582 | 2284 | struct cyclades_port *info = tty->driver_data; |
d1b8bc3b | 2285 | int old_flags; |
25c3cdf8 | 2286 | int ret; |
02f1175c | 2287 | |
6fbf9582 AV |
2288 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) |
2289 | return -ENODEV; | |
02f1175c | 2290 | |
25c3cdf8 | 2291 | mutex_lock(&info->port.mutex); |
d1b8bc3b JH |
2292 | |
2293 | old_flags = info->port.flags; | |
2294 | ||
02f1175c | 2295 | if (!capable(CAP_SYS_ADMIN)) { |
6fbf9582 AV |
2296 | if (ss->close_delay != info->port.close_delay || |
2297 | ss->baud_base != info->baud || | |
2298 | (ss->flags & ASYNC_FLAGS & | |
02f1175c | 2299 | ~ASYNC_USR_MASK) != |
77451e53 | 2300 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
25c3cdf8 AC |
2301 | { |
2302 | mutex_unlock(&info->port.mutex); | |
02f1175c | 2303 | return -EPERM; |
25c3cdf8 | 2304 | } |
77451e53 | 2305 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
6fbf9582 AV |
2306 | (ss->flags & ASYNC_USR_MASK); |
2307 | info->baud = ss->baud_base; | |
2308 | info->custom_divisor = ss->custom_divisor; | |
02f1175c JS |
2309 | goto check_and_exit; |
2310 | } | |
2311 | ||
2312 | /* | |
2313 | * OK, past this point, all the error checking has been done. | |
2314 | * At this point, we start making changes..... | |
2315 | */ | |
2316 | ||
6fbf9582 AV |
2317 | info->baud = ss->baud_base; |
2318 | info->custom_divisor = ss->custom_divisor; | |
77451e53 | 2319 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
6fbf9582 AV |
2320 | (ss->flags & ASYNC_FLAGS); |
2321 | info->port.close_delay = ss->close_delay * HZ / 100; | |
2322 | info->port.closing_wait = ss->closing_wait * HZ / 100; | |
1da177e4 LT |
2323 | |
2324 | check_and_exit: | |
d41861ca | 2325 | if (tty_port_initialized(&info->port)) { |
6fbf9582 | 2326 | if ((ss->flags ^ old_flags) & ASYNC_SPD_MASK) { |
d1b8bc3b | 2327 | /* warn about deprecation unless clearing */ |
6fbf9582 | 2328 | if (ss->flags & ASYNC_SPD_MASK) |
d1b8bc3b JH |
2329 | dev_warn_ratelimited(tty->dev, "use of SPD flags is deprecated\n"); |
2330 | } | |
d13549f8 | 2331 | cy_set_line_char(info, tty); |
25c3cdf8 | 2332 | ret = 0; |
02f1175c | 2333 | } else { |
25c3cdf8 | 2334 | ret = cy_startup(info, tty); |
02f1175c | 2335 | } |
25c3cdf8 AC |
2336 | mutex_unlock(&info->port.mutex); |
2337 | return ret; | |
02f1175c | 2338 | } /* set_serial_info */ |
1da177e4 LT |
2339 | |
2340 | /* | |
2341 | * get_lsr_info - get line status register info | |
2342 | * | |
2343 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2344 | * is emptied. On bus types like RS485, the transmitter must | |
2345 | * release the bus after transmitting. This must be done when | |
2346 | * the transmit shift register is empty, not be done when the | |
2347 | * transmit holding register is empty. This functionality | |
2348 | * allows an RS485 driver to be written in user space. | |
2349 | */ | |
15ed6cc0 | 2350 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2351 | { |
3aeea5b9 | 2352 | struct cyclades_card *card = info->card; |
02f1175c JS |
2353 | unsigned int result; |
2354 | unsigned long flags; | |
3aeea5b9 | 2355 | u8 status; |
1da177e4 | 2356 | |
2693f485 | 2357 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2358 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2359 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2360 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2361 | result = (status ? 0 : TIOCSER_TEMT); |
2362 | } else { | |
2363 | /* Not supported yet */ | |
2364 | return -EINVAL; | |
2365 | } | |
dbca36ea | 2366 | return put_user(result, value); |
1da177e4 LT |
2367 | } |
2368 | ||
60b33c13 | 2369 | static int cy_tiocmget(struct tty_struct *tty) |
1da177e4 | 2370 | { |
cab9bdd1 | 2371 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2372 | struct cyclades_card *card; |
3aeea5b9 | 2373 | int result; |
02f1175c | 2374 | |
bf9d8929 | 2375 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2376 | return -ENODEV; |
1da177e4 | 2377 | |
02f1175c | 2378 | card = info->card; |
0d348729 | 2379 | |
2693f485 | 2380 | if (!cy_is_Z(card)) { |
0d348729 | 2381 | unsigned long flags; |
3aeea5b9 JS |
2382 | int channel = info->line - card->first_line; |
2383 | u8 status; | |
1da177e4 | 2384 | |
9fa1b3b1 | 2385 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2386 | cyy_writeb(info, CyCAR, channel & 0x03); |
2387 | status = cyy_readb(info, CyMSVR1); | |
2388 | status |= cyy_readb(info, CyMSVR2); | |
9fa1b3b1 | 2389 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2390 | |
2391 | if (info->rtsdtr_inv) { | |
2392 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2393 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2394 | } else { | |
2395 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2396 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2397 | } | |
2398 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2399 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2400 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2401 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2402 | } else { |
0d348729 JS |
2403 | u32 lstatus; |
2404 | ||
2405 | if (!cyz_is_loaded(card)) { | |
2406 | result = -ENODEV; | |
2407 | goto end; | |
02f1175c | 2408 | } |
1da177e4 | 2409 | |
0d348729 JS |
2410 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
2411 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | | |
2412 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2413 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2414 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2415 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2416 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
02f1175c | 2417 | } |
0d348729 | 2418 | end: |
02f1175c JS |
2419 | return result; |
2420 | } /* cy_tiomget */ | |
1da177e4 LT |
2421 | |
2422 | static int | |
20b9d177 | 2423 | cy_tiocmset(struct tty_struct *tty, |
02f1175c | 2424 | unsigned int set, unsigned int clear) |
1da177e4 | 2425 | { |
cab9bdd1 | 2426 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2427 | struct cyclades_card *card; |
02f1175c | 2428 | unsigned long flags; |
02f1175c | 2429 | |
bf9d8929 | 2430 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2431 | return -ENODEV; |
2432 | ||
2433 | card = info->card; | |
2693f485 | 2434 | if (!cy_is_Z(card)) { |
4d768200 JS |
2435 | spin_lock_irqsave(&card->card_lock, flags); |
2436 | cyy_change_rts_dtr(info, set, clear); | |
2437 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2438 | } else { |
0d348729 JS |
2439 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
2440 | int retval, channel = info->line - card->first_line; | |
2441 | u32 rs; | |
2442 | ||
2443 | if (!cyz_is_loaded(card)) | |
2444 | return -ENODEV; | |
2445 | ||
2446 | spin_lock_irqsave(&card->card_lock, flags); | |
2447 | rs = readl(&ch_ctrl->rs_control); | |
2448 | if (set & TIOCM_RTS) | |
2449 | rs |= C_RS_RTS; | |
2450 | if (clear & TIOCM_RTS) | |
2451 | rs &= ~C_RS_RTS; | |
2452 | if (set & TIOCM_DTR) { | |
2453 | rs |= C_RS_DTR; | |
1da177e4 | 2454 | #ifdef CY_DEBUG_DTR |
0d348729 | 2455 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
1da177e4 | 2456 | #endif |
0d348729 JS |
2457 | } |
2458 | if (clear & TIOCM_DTR) { | |
2459 | rs &= ~C_RS_DTR; | |
1da177e4 | 2460 | #ifdef CY_DEBUG_DTR |
0d348729 JS |
2461 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2462 | "Z DTR\n"); | |
1da177e4 | 2463 | #endif |
02f1175c | 2464 | } |
0d348729 | 2465 | cy_writel(&ch_ctrl->rs_control, rs); |
9fa1b3b1 | 2466 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
0d348729 | 2467 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2468 | if (retval != 0) { |
21719191 JS |
2469 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2470 | "was %x\n", info->line, retval); | |
02f1175c | 2471 | } |
1da177e4 | 2472 | } |
02f1175c | 2473 | return 0; |
0d348729 | 2474 | } |
1da177e4 LT |
2475 | |
2476 | /* | |
2477 | * cy_break() --- routine which turns the break handling on or off | |
2478 | */ | |
9e98966c | 2479 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2480 | { |
cab9bdd1 | 2481 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2482 | struct cyclades_card *card; |
02f1175c | 2483 | unsigned long flags; |
9e98966c | 2484 | int retval = 0; |
1da177e4 | 2485 | |
02f1175c | 2486 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2487 | return -EINVAL; |
1da177e4 | 2488 | |
9fa1b3b1 JS |
2489 | card = info->card; |
2490 | ||
2491 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2492 | if (!cy_is_Z(card)) { |
02f1175c JS |
2493 | /* Let the transmit ISR take care of this (since it |
2494 | requires stuffing characters into the output stream). | |
2495 | */ | |
2496 | if (break_state == -1) { | |
2497 | if (!info->breakon) { | |
2498 | info->breakon = 1; | |
2499 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2500 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2501 | start_xmit(info); |
9fa1b3b1 | 2502 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2503 | } |
2504 | } | |
2505 | } else { | |
2506 | if (!info->breakoff) { | |
2507 | info->breakoff = 1; | |
2508 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2509 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2510 | start_xmit(info); |
9fa1b3b1 | 2511 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2512 | } |
2513 | } | |
1da177e4 | 2514 | } |
1da177e4 | 2515 | } else { |
02f1175c | 2516 | if (break_state == -1) { |
9fa1b3b1 JS |
2517 | retval = cyz_issue_cmd(card, |
2518 | info->line - card->first_line, | |
02f1175c JS |
2519 | C_CM_SET_BREAK, 0L); |
2520 | if (retval != 0) { | |
21719191 JS |
2521 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2522 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2523 | } |
2524 | } else { | |
9fa1b3b1 JS |
2525 | retval = cyz_issue_cmd(card, |
2526 | info->line - card->first_line, | |
02f1175c JS |
2527 | C_CM_CLR_BREAK, 0L); |
2528 | if (retval != 0) { | |
21719191 JS |
2529 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2530 | "on ttyC%d was %x\n", info->line, | |
2531 | retval); | |
02f1175c | 2532 | } |
1da177e4 | 2533 | } |
1da177e4 | 2534 | } |
9fa1b3b1 | 2535 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2536 | return retval; |
02f1175c | 2537 | } /* cy_break */ |
1da177e4 | 2538 | |
02f1175c | 2539 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2540 | { |
3aeea5b9 | 2541 | struct cyclades_card *card = info->card; |
02f1175c | 2542 | unsigned long flags; |
1da177e4 | 2543 | |
2693f485 | 2544 | if (!cy_is_Z(card)) { |
02f1175c JS |
2545 | info->cor3 &= ~CyREC_FIFO; |
2546 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2547 | |
9fa1b3b1 | 2548 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2549 | cyy_writeb(info, CyCOR3, info->cor3); |
2550 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); | |
9fa1b3b1 | 2551 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2552 | } |
2553 | return 0; | |
2554 | } /* set_threshold */ | |
1da177e4 | 2555 | |
15ed6cc0 AC |
2556 | static int get_threshold(struct cyclades_port *info, |
2557 | unsigned long __user *value) | |
1da177e4 | 2558 | { |
3aeea5b9 | 2559 | struct cyclades_card *card = info->card; |
1da177e4 | 2560 | |
2693f485 | 2561 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2562 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
02f1175c | 2563 | return put_user(tmp, value); |
02f1175c | 2564 | } |
f7429034 | 2565 | return 0; |
02f1175c | 2566 | } /* get_threshold */ |
1da177e4 | 2567 | |
02f1175c | 2568 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2569 | { |
3aeea5b9 | 2570 | struct cyclades_card *card = info->card; |
02f1175c | 2571 | unsigned long flags; |
1da177e4 | 2572 | |
2693f485 | 2573 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2574 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2575 | cyy_writeb(info, CyRTPR, value & 0xff); |
9fa1b3b1 | 2576 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2577 | } |
2578 | return 0; | |
2579 | } /* set_timeout */ | |
1da177e4 | 2580 | |
15ed6cc0 AC |
2581 | static int get_timeout(struct cyclades_port *info, |
2582 | unsigned long __user *value) | |
1da177e4 | 2583 | { |
3aeea5b9 | 2584 | struct cyclades_card *card = info->card; |
1da177e4 | 2585 | |
2693f485 | 2586 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2587 | u8 tmp = cyy_readb(info, CyRTPR); |
02f1175c | 2588 | return put_user(tmp, value); |
02f1175c | 2589 | } |
f7429034 | 2590 | return 0; |
02f1175c | 2591 | } /* get_timeout */ |
1da177e4 | 2592 | |
6c28181c JS |
2593 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2594 | struct cyclades_icount *cprev) | |
1da177e4 | 2595 | { |
6c28181c JS |
2596 | struct cyclades_icount cnow; |
2597 | unsigned long flags; | |
2598 | int ret; | |
1da177e4 | 2599 | |
6c28181c JS |
2600 | spin_lock_irqsave(&info->card->card_lock, flags); |
2601 | cnow = info->icount; /* atomic copy */ | |
2602 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2603 | ||
2604 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2605 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2606 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2607 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2608 | ||
2609 | *cprev = cnow; | |
2610 | ||
2611 | return ret; | |
2612 | } | |
1da177e4 LT |
2613 | |
2614 | /* | |
2615 | * This routine allows the tty driver to implement device- | |
2616 | * specific ioctl's. If the ioctl number passed in cmd is | |
2617 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2618 | */ | |
2619 | static int | |
6caa76b7 | 2620 | cy_ioctl(struct tty_struct *tty, |
02f1175c | 2621 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2622 | { |
cab9bdd1 | 2623 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2624 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2625 | int ret_val = 0; |
2626 | unsigned long flags; | |
2627 | void __user *argp = (void __user *)arg; | |
2628 | ||
2629 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2630 | return -ENODEV; | |
1da177e4 LT |
2631 | |
2632 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2633 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2634 | info->line, cmd, arg); | |
1da177e4 LT |
2635 | #endif |
2636 | ||
02f1175c JS |
2637 | switch (cmd) { |
2638 | case CYGETMON: | |
6c28181c JS |
2639 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2640 | ret_val = -EFAULT; | |
2641 | break; | |
2642 | } | |
2643 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2644 | break; |
2645 | case CYGETTHRESH: | |
2646 | ret_val = get_threshold(info, argp); | |
2647 | break; | |
2648 | case CYSETTHRESH: | |
2649 | ret_val = set_threshold(info, arg); | |
2650 | break; | |
2651 | case CYGETDEFTHRESH: | |
6c28181c JS |
2652 | ret_val = put_user(info->default_threshold, |
2653 | (unsigned long __user *)argp); | |
02f1175c JS |
2654 | break; |
2655 | case CYSETDEFTHRESH: | |
6c28181c | 2656 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2657 | break; |
2658 | case CYGETTIMEOUT: | |
2659 | ret_val = get_timeout(info, argp); | |
2660 | break; | |
2661 | case CYSETTIMEOUT: | |
2662 | ret_val = set_timeout(info, arg); | |
2663 | break; | |
2664 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2665 | ret_val = put_user(info->default_timeout, |
2666 | (unsigned long __user *)argp); | |
02f1175c JS |
2667 | break; |
2668 | case CYSETDEFTIMEOUT: | |
6c28181c | 2669 | info->default_timeout = arg & 0xff; |
02f1175c | 2670 | break; |
1da177e4 | 2671 | case CYSETRFLOW: |
02f1175c | 2672 | info->rflow = (int)arg; |
02f1175c | 2673 | break; |
1da177e4 | 2674 | case CYGETRFLOW: |
02f1175c JS |
2675 | ret_val = info->rflow; |
2676 | break; | |
1da177e4 | 2677 | case CYSETRTSDTR_INV: |
02f1175c | 2678 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2679 | break; |
1da177e4 | 2680 | case CYGETRTSDTR_INV: |
02f1175c JS |
2681 | ret_val = info->rtsdtr_inv; |
2682 | break; | |
1da177e4 | 2683 | case CYGETCD1400VER: |
02f1175c JS |
2684 | ret_val = info->chip_rev; |
2685 | break; | |
1da177e4 LT |
2686 | #ifndef CONFIG_CYZ_INTR |
2687 | case CYZSETPOLLCYCLE: | |
351d6204 QX |
2688 | if (arg > LONG_MAX / HZ) |
2689 | return -ENODEV; | |
02f1175c | 2690 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2691 | break; |
1da177e4 | 2692 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2693 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2694 | break; | |
2695 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2696 | case CYSETWAIT: |
44b7d1b3 | 2697 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2698 | break; |
1da177e4 | 2699 | case CYGETWAIT: |
44b7d1b3 | 2700 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c | 2701 | break; |
02f1175c JS |
2702 | case TIOCSERGETLSR: /* Get line status register */ |
2703 | ret_val = get_lsr_info(info, argp); | |
2704 | break; | |
2705 | /* | |
2706 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2707 | * - mask passed in arg for lines of interest | |
2708 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2709 | * Caller should use TIOCGICOUNT to see which one it was | |
2710 | */ | |
1da177e4 | 2711 | case TIOCMIWAIT: |
9fa1b3b1 | 2712 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2713 | /* note the counters on entry */ |
2c7fea99 | 2714 | cnow = info->icount; |
9fa1b3b1 | 2715 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
bdc04e31 | 2716 | ret_val = wait_event_interruptible(info->port.delta_msr_wait, |
6c28181c | 2717 | cy_cflags_changed(info, arg, &cnow)); |
2c7fea99 | 2718 | break; |
1da177e4 | 2719 | |
02f1175c JS |
2720 | /* |
2721 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2722 | * Return: write counters to the user passed counter struct | |
2723 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2724 | * RI where only 0->1 is counted. | |
2725 | */ | |
02f1175c JS |
2726 | default: |
2727 | ret_val = -ENOIOCTLCMD; | |
2728 | } | |
1da177e4 LT |
2729 | |
2730 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2731 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2732 | #endif |
02f1175c JS |
2733 | return ret_val; |
2734 | } /* cy_ioctl */ | |
1da177e4 | 2735 | |
0587102c AC |
2736 | static int cy_get_icount(struct tty_struct *tty, |
2737 | struct serial_icounter_struct *sic) | |
2738 | { | |
2739 | struct cyclades_port *info = tty->driver_data; | |
2740 | struct cyclades_icount cnow; /* Used to snapshot */ | |
2741 | unsigned long flags; | |
2742 | ||
2743 | spin_lock_irqsave(&info->card->card_lock, flags); | |
2744 | cnow = info->icount; | |
2745 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2746 | ||
2747 | sic->cts = cnow.cts; | |
2748 | sic->dsr = cnow.dsr; | |
2749 | sic->rng = cnow.rng; | |
2750 | sic->dcd = cnow.dcd; | |
2751 | sic->rx = cnow.rx; | |
2752 | sic->tx = cnow.tx; | |
2753 | sic->frame = cnow.frame; | |
2754 | sic->overrun = cnow.overrun; | |
2755 | sic->parity = cnow.parity; | |
2756 | sic->brk = cnow.brk; | |
2757 | sic->buf_overrun = cnow.buf_overrun; | |
2758 | return 0; | |
2759 | } | |
2760 | ||
1da177e4 LT |
2761 | /* |
2762 | * This routine allows the tty driver to be notified when | |
2763 | * device's termios settings have changed. Note that a | |
2764 | * well-designed tty driver should be prepared to accept the case | |
2765 | * where old == NULL, and try to do something rational. | |
2766 | */ | |
02f1175c | 2767 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2768 | { |
cab9bdd1 | 2769 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2770 | |
2771 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2772 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2773 | #endif |
2774 | ||
d13549f8 | 2775 | cy_set_line_char(info, tty); |
02f1175c | 2776 | |
9db276f8 | 2777 | if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) { |
02f1175c JS |
2778 | tty->hw_stopped = 0; |
2779 | cy_start(tty); | |
2780 | } | |
1da177e4 | 2781 | #if 0 |
02f1175c JS |
2782 | /* |
2783 | * No need to wake up processes in open wait, since they | |
2784 | * sample the CLOCAL flag once, and don't recheck it. | |
2785 | * XXX It's not clear whether the current behavior is correct | |
2786 | * or not. Hence, this may change..... | |
2787 | */ | |
9db276f8 | 2788 | if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
77451e53 | 2789 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 2790 | #endif |
02f1175c | 2791 | } /* cy_set_termios */ |
1da177e4 LT |
2792 | |
2793 | /* This function is used to send a high-priority XON/XOFF character to | |
2794 | the device. | |
2795 | */ | |
02f1175c | 2796 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 2797 | { |
cab9bdd1 | 2798 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2799 | struct cyclades_card *card; |
2800 | int channel; | |
1da177e4 | 2801 | |
02f1175c | 2802 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
2803 | return; |
2804 | ||
02f1175c | 2805 | info->x_char = ch; |
1da177e4 LT |
2806 | |
2807 | if (ch) | |
02f1175c | 2808 | cy_start(tty); |
1da177e4 LT |
2809 | |
2810 | card = info->card; | |
875b206b | 2811 | channel = info->line - card->first_line; |
1da177e4 | 2812 | |
2693f485 | 2813 | if (cy_is_Z(card)) { |
02f1175c | 2814 | if (ch == STOP_CHAR(tty)) |
875b206b | 2815 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 2816 | else if (ch == START_CHAR(tty)) |
875b206b | 2817 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
2818 | } |
2819 | } | |
2820 | ||
2821 | /* This routine is called by the upper-layer tty layer to signal | |
2822 | that incoming characters should be throttled because the input | |
2823 | buffers are close to full. | |
2824 | */ | |
02f1175c | 2825 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 2826 | { |
cab9bdd1 | 2827 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2828 | struct cyclades_card *card; |
02f1175c | 2829 | unsigned long flags; |
1da177e4 LT |
2830 | |
2831 | #ifdef CY_DEBUG_THROTTLE | |
fdfb719e PH |
2832 | printk(KERN_DEBUG "cyc:throttle %s ...ttyC%d\n", tty_name(tty), |
2833 | info->line); | |
1da177e4 LT |
2834 | #endif |
2835 | ||
15ed6cc0 | 2836 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 2837 | return; |
02f1175c JS |
2838 | |
2839 | card = info->card; | |
2840 | ||
2841 | if (I_IXOFF(tty)) { | |
2693f485 | 2842 | if (!cy_is_Z(card)) |
02f1175c JS |
2843 | cy_send_xchar(tty, STOP_CHAR(tty)); |
2844 | else | |
2845 | info->throttle = 1; | |
2846 | } | |
1da177e4 | 2847 | |
9db276f8 | 2848 | if (C_CRTSCTS(tty)) { |
2693f485 | 2849 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2850 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2851 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 2852 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2853 | } else { |
2854 | info->throttle = 1; | |
2855 | } | |
2856 | } | |
02f1175c | 2857 | } /* cy_throttle */ |
1da177e4 LT |
2858 | |
2859 | /* | |
2860 | * This routine notifies the tty driver that it should signal | |
2861 | * that characters can now be sent to the tty without fear of | |
2862 | * overrunning the input buffers of the line disciplines. | |
2863 | */ | |
02f1175c | 2864 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 2865 | { |
cab9bdd1 | 2866 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2867 | struct cyclades_card *card; |
02f1175c | 2868 | unsigned long flags; |
1da177e4 LT |
2869 | |
2870 | #ifdef CY_DEBUG_THROTTLE | |
fdfb719e PH |
2871 | printk(KERN_DEBUG "cyc:unthrottle %s ...ttyC%d\n", |
2872 | tty_name(tty), info->line); | |
1da177e4 LT |
2873 | #endif |
2874 | ||
15ed6cc0 | 2875 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 2876 | return; |
1da177e4 | 2877 | |
02f1175c JS |
2878 | if (I_IXOFF(tty)) { |
2879 | if (info->x_char) | |
2880 | info->x_char = 0; | |
2881 | else | |
2882 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 2883 | } |
1da177e4 | 2884 | |
9db276f8 | 2885 | if (C_CRTSCTS(tty)) { |
02f1175c | 2886 | card = info->card; |
2693f485 | 2887 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2888 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2889 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 2890 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2891 | } else { |
2892 | info->throttle = 0; | |
2893 | } | |
2894 | } | |
02f1175c | 2895 | } /* cy_unthrottle */ |
1da177e4 LT |
2896 | |
2897 | /* cy_start and cy_stop provide software output flow control as a | |
2898 | function of XON/XOFF, software CTS, and other such stuff. | |
2899 | */ | |
02f1175c | 2900 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 2901 | { |
02f1175c | 2902 | struct cyclades_card *cinfo; |
cab9bdd1 | 2903 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2904 | int channel; |
02f1175c | 2905 | unsigned long flags; |
1da177e4 LT |
2906 | |
2907 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2908 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
2909 | #endif |
2910 | ||
02f1175c JS |
2911 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
2912 | return; | |
1da177e4 | 2913 | |
875b206b | 2914 | cinfo = info->card; |
02f1175c | 2915 | channel = info->line - cinfo->first_line; |
2693f485 | 2916 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2917 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2918 | cyy_writeb(info, CyCAR, channel & 0x03); |
2919 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); | |
9fa1b3b1 | 2920 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2921 | } |
02f1175c | 2922 | } /* cy_stop */ |
1da177e4 | 2923 | |
02f1175c | 2924 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 2925 | { |
02f1175c | 2926 | struct cyclades_card *cinfo; |
cab9bdd1 | 2927 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2928 | int channel; |
02f1175c | 2929 | unsigned long flags; |
1da177e4 LT |
2930 | |
2931 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2932 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
2933 | #endif |
2934 | ||
02f1175c JS |
2935 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
2936 | return; | |
1da177e4 | 2937 | |
875b206b | 2938 | cinfo = info->card; |
02f1175c | 2939 | channel = info->line - cinfo->first_line; |
2693f485 | 2940 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2941 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2942 | cyy_writeb(info, CyCAR, channel & 0x03); |
2943 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 2944 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2945 | } |
02f1175c | 2946 | } /* cy_start */ |
1da177e4 | 2947 | |
1da177e4 LT |
2948 | /* |
2949 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
2950 | */ | |
02f1175c | 2951 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 2952 | { |
cab9bdd1 | 2953 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2954 | |
1da177e4 | 2955 | #ifdef CY_DEBUG_OTHER |
21719191 | 2956 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
2957 | #endif |
2958 | ||
02f1175c JS |
2959 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
2960 | return; | |
1da177e4 | 2961 | |
02f1175c | 2962 | cy_flush_buffer(tty); |
d13549f8 | 2963 | cy_shutdown(info, tty); |
174e6fe0 | 2964 | tty_port_hangup(&info->port); |
02f1175c | 2965 | } /* cy_hangup */ |
1da177e4 | 2966 | |
f0737579 JS |
2967 | static int cyy_carrier_raised(struct tty_port *port) |
2968 | { | |
2969 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
2970 | port); | |
2971 | struct cyclades_card *cinfo = info->card; | |
f0737579 JS |
2972 | unsigned long flags; |
2973 | int channel = info->line - cinfo->first_line; | |
f0737579 JS |
2974 | u32 cd; |
2975 | ||
f0737579 | 2976 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2977 | cyy_writeb(info, CyCAR, channel & 0x03); |
2978 | cd = cyy_readb(info, CyMSVR1) & CyDCD; | |
f0737579 JS |
2979 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
2980 | ||
2981 | return cd; | |
2982 | } | |
2983 | ||
2984 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
2985 | { | |
2986 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
2987 | port); | |
2988 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 2989 | unsigned long flags; |
f0737579 JS |
2990 | |
2991 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
2992 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
2993 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
2994 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
2995 | } | |
2996 | ||
2997 | static int cyz_carrier_raised(struct tty_port *port) | |
2998 | { | |
2999 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3000 | port); | |
f0737579 | 3001 | |
f0eefdc3 | 3002 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3003 | } |
3004 | ||
3005 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3006 | { | |
3007 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3008 | port); | |
3009 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3010 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3011 | int ret, channel = info->line - cinfo->first_line; |
3012 | u32 rs; | |
3013 | ||
f0eefdc3 | 3014 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3015 | if (raise) |
3016 | rs |= C_RS_RTS | C_RS_DTR; | |
3017 | else | |
3018 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3019 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3020 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3021 | if (ret != 0) | |
3022 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3023 | __func__, info->line, ret); | |
3024 | #ifdef CY_DEBUG_DTR | |
3025 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3026 | #endif | |
3027 | } | |
3028 | ||
3029 | static const struct tty_port_operations cyy_port_ops = { | |
3030 | .carrier_raised = cyy_carrier_raised, | |
3031 | .dtr_rts = cyy_dtr_rts, | |
e936ffd5 | 3032 | .shutdown = cy_do_close, |
f0737579 JS |
3033 | }; |
3034 | ||
3035 | static const struct tty_port_operations cyz_port_ops = { | |
3036 | .carrier_raised = cyz_carrier_raised, | |
3037 | .dtr_rts = cyz_dtr_rts, | |
e936ffd5 | 3038 | .shutdown = cy_do_close, |
f0737579 JS |
3039 | }; |
3040 | ||
1da177e4 LT |
3041 | /* |
3042 | * --------------------------------------------------------------------- | |
3043 | * cy_init() and friends | |
3044 | * | |
3045 | * cy_init() is called at boot-time to initialize the serial driver. | |
3046 | * --------------------------------------------------------------------- | |
3047 | */ | |
3048 | ||
9671f099 | 3049 | static int cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3050 | { |
3051 | struct cyclades_port *info; | |
f0eefdc3 | 3052 | unsigned int channel, port; |
0809e267 | 3053 | |
3046d50e | 3054 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3055 | cinfo->intr_enabled = 0; |
3046d50e | 3056 | |
963118ee JS |
3057 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3058 | GFP_KERNEL); | |
dd025c0c JS |
3059 | if (cinfo->ports == NULL) { |
3060 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3061 | return -ENOMEM; | |
3062 | } | |
3063 | ||
f0eefdc3 JS |
3064 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3065 | channel++, port++) { | |
3066 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3067 | tty_port_init(&info->port); |
3046d50e | 3068 | info->magic = CYCLADES_MAGIC; |
875b206b | 3069 | info->card = cinfo; |
3046d50e | 3070 | info->line = port; |
3046d50e | 3071 | |
44b7d1b3 AC |
3072 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3073 | info->port.close_delay = 5 * HZ / 10; | |
2c7fea99 | 3074 | init_completion(&info->shutdown_wait); |
3046d50e | 3075 | |
2693f485 | 3076 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3077 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3078 | struct ZFW_CTRL *zfw_ctrl; | |
3079 | ||
f0737579 | 3080 | info->port.ops = &cyz_port_ops; |
0809e267 | 3081 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3082 | |
3083 | zfw_ctrl = cinfo->base_addr + | |
3084 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3085 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3086 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3087 | ||
101b8159 | 3088 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3089 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3090 | else | |
3046d50e | 3091 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3092 | #ifdef CONFIG_CYZ_INTR |
a8497b31 | 3093 | timer_setup(&info->rx_full_timer, cyz_rx_restart, 0); |
0809e267 | 3094 | #endif |
3046d50e | 3095 | } else { |
f0eefdc3 | 3096 | unsigned short chip_number; |
963118ee | 3097 | int index = cinfo->bus_index; |
f0eefdc3 | 3098 | |
f0737579 | 3099 | info->port.ops = &cyy_port_ops; |
0809e267 | 3100 | info->type = PORT_CIRRUS; |
0809e267 | 3101 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3102 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3103 | info->cor2 = CyETC; |
3104 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3105 | |
f0eefdc3 | 3106 | chip_number = channel / CyPORTS_PER_CHIP; |
3aeea5b9 JS |
3107 | info->u.cyy.base_addr = cinfo->base_addr + |
3108 | (cy_chip_offset[chip_number] << index); | |
3109 | info->chip_rev = cyy_readb(info, CyGFRCR); | |
15ed6cc0 AC |
3110 | |
3111 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3112 | /* It is a CD1400 rev. J or later */ |
3113 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3114 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3115 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3116 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3117 | info->rtsdtr_inv = 1; |
3118 | } else { | |
3119 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3120 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3121 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3122 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3123 | info->rtsdtr_inv = 0; |
3124 | } | |
3046d50e JS |
3125 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3126 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3127 | } |
3046d50e | 3128 | |
0809e267 | 3129 | } |
3046d50e JS |
3130 | |
3131 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3132 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3133 | mod_timer(&cyz_timerlist, jiffies + 1); |
3134 | #ifdef CY_PCI_DEBUG | |
3135 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3136 | #endif | |
3137 | } | |
3138 | #endif | |
dd025c0c | 3139 | return 0; |
0809e267 JS |
3140 | } |
3141 | ||
1da177e4 LT |
3142 | /* initialize chips on Cyclom-Y card -- return number of valid |
3143 | chips (which is number of ports/4) */ | |
9671f099 | 3144 | static unsigned short cyy_init_card(void __iomem *true_base_addr, |
31b4f0a1 | 3145 | int index) |
1da177e4 | 3146 | { |
02f1175c JS |
3147 | unsigned int chip_number; |
3148 | void __iomem *base_addr; | |
3149 | ||
3150 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3151 | /* Cy_HwReset is 0x1400 */ | |
3152 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3153 | /* Cy_ClrIntr is 0x1800 */ | |
3154 | udelay(500L); | |
3155 | ||
15ed6cc0 AC |
3156 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3157 | chip_number++) { | |
02f1175c JS |
3158 | base_addr = |
3159 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3160 | mdelay(1); | |
db05c3b1 | 3161 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3162 | /************* |
3163 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3164 | chip_number, (unsigned long)base_addr); | |
3165 | *************/ | |
3166 | return chip_number; | |
3167 | } | |
3168 | ||
3169 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3170 | udelay(10L); | |
3171 | ||
3172 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3173 | cannot distinguish between references to chip 0 and a non- | |
3174 | existent chip 4. If the preceding clearing of the supposed | |
3175 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3176 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3177 | */ | |
db05c3b1 | 3178 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3179 | (cy_chip_offset[0] << index) + |
3180 | (CyGFRCR << index)) == 0) { | |
3181 | return chip_number; | |
3182 | } | |
3183 | ||
3184 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3185 | mdelay(1); | |
3186 | ||
db05c3b1 | 3187 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3188 | /* |
3189 | printk(" chip #%d at %#6lx is not responding ", | |
3190 | chip_number, (unsigned long)base_addr); | |
3191 | printk("(GFRCR stayed 0)\n", | |
3192 | */ | |
3193 | return chip_number; | |
3194 | } | |
db05c3b1 | 3195 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3196 | 0x40) { |
3197 | /* | |
3198 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3199 | "%#2x)\n", | |
3200 | chip_number, (unsigned long)base_addr, | |
3201 | base_addr[CyGFRCR<<index]); | |
3202 | */ | |
3203 | return chip_number; | |
3204 | } | |
3205 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3206 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3207 | /* It is a CD1400 rev. J or later */ |
3208 | /* Impossible to reach 5ms with this chip. | |
3209 | Changed to 2ms instead (f = 500 Hz). */ | |
3210 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3211 | } else { | |
3212 | /* f = 200 Hz */ | |
3213 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3214 | } | |
1da177e4 | 3215 | |
02f1175c JS |
3216 | /* |
3217 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3218 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3219 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3220 | */ |
3221 | } | |
3222 | return chip_number; | |
3223 | } /* cyy_init_card */ | |
1da177e4 LT |
3224 | |
3225 | /* | |
3226 | * --------------------------------------------------------------------- | |
3227 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3228 | * sets global variables and return the number of ISA boards found. | |
3229 | * --------------------------------------------------------------------- | |
3230 | */ | |
02f1175c | 3231 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3232 | { |
3233 | #ifdef CONFIG_ISA | |
718c4ca1 | 3234 | struct cyclades_card *card; |
02f1175c JS |
3235 | unsigned short cy_isa_irq, nboard; |
3236 | void __iomem *cy_isa_address; | |
734cc178 | 3237 | unsigned short i, j, k, cy_isa_nchan; |
02f1175c | 3238 | int isparam = 0; |
1da177e4 | 3239 | |
02f1175c | 3240 | nboard = 0; |
1da177e4 | 3241 | |
1da177e4 | 3242 | /* Check for module parameters */ |
02f1175c JS |
3243 | for (i = 0; i < NR_CARDS; i++) { |
3244 | if (maddr[i] || i) { | |
3245 | isparam = 1; | |
3246 | cy_isa_addresses[i] = maddr[i]; | |
3247 | } | |
3248 | if (!maddr[i]) | |
3249 | break; | |
1da177e4 | 3250 | } |
1da177e4 | 3251 | |
02f1175c JS |
3252 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3253 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3254 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3255 | if (isa_address == 0x0000) |
096dcfce | 3256 | return nboard; |
1da177e4 | 3257 | |
02f1175c | 3258 | /* probe for CD1400... */ |
cd989b3a | 3259 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3260 | if (cy_isa_address == NULL) { |
3261 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3262 | "address\n"); | |
3263 | continue; | |
3264 | } | |
02f1175c JS |
3265 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3266 | cyy_init_card(cy_isa_address, 0); | |
3267 | if (cy_isa_nchan == 0) { | |
3137553d | 3268 | iounmap(cy_isa_address); |
02f1175c JS |
3269 | continue; |
3270 | } | |
20904363 | 3271 | |
196b3167 | 3272 | if (isparam && i < NR_CARDS && irq[i]) |
02f1175c | 3273 | cy_isa_irq = irq[i]; |
1da177e4 | 3274 | else |
02f1175c JS |
3275 | /* find out the board's irq by probing */ |
3276 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3277 | if (cy_isa_irq == 0) { | |
21719191 JS |
3278 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3279 | "IRQ could not be detected.\n", | |
02f1175c | 3280 | (unsigned long)cy_isa_address); |
3137553d | 3281 | iounmap(cy_isa_address); |
02f1175c JS |
3282 | continue; |
3283 | } | |
3284 | ||
3285 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3286 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3287 | "more channels are available. Change NR_PORTS " | |
3288 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 3289 | (unsigned long)cy_isa_address); |
3137553d | 3290 | iounmap(cy_isa_address); |
096dcfce | 3291 | return nboard; |
02f1175c JS |
3292 | } |
3293 | /* fill the next cy_card structure available */ | |
3294 | for (j = 0; j < NR_CARDS; j++) { | |
718c4ca1 JS |
3295 | card = &cy_card[j]; |
3296 | if (card->base_addr == NULL) | |
02f1175c JS |
3297 | break; |
3298 | } | |
3299 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3300 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3301 | "more cards can be used. Change NR_CARDS in " | |
3302 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3303 | (unsigned long)cy_isa_address); |
3137553d | 3304 | iounmap(cy_isa_address); |
096dcfce | 3305 | return nboard; |
02f1175c JS |
3306 | } |
3307 | ||
3308 | /* allocate IRQ */ | |
3309 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
718c4ca1 | 3310 | 0, "Cyclom-Y", card)) { |
21719191 JS |
3311 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3312 | "could not allocate IRQ#%d.\n", | |
3313 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3314 | iounmap(cy_isa_address); |
096dcfce | 3315 | return nboard; |
02f1175c JS |
3316 | } |
3317 | ||
3318 | /* set cy_card */ | |
718c4ca1 JS |
3319 | card->base_addr = cy_isa_address; |
3320 | card->ctl_addr.p9050 = NULL; | |
3321 | card->irq = (int)cy_isa_irq; | |
3322 | card->bus_index = 0; | |
3323 | card->first_line = cy_next_channel; | |
3324 | card->num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; | |
3325 | card->nports = cy_isa_nchan; | |
3326 | if (cy_init_card(card)) { | |
3327 | card->base_addr = NULL; | |
3328 | free_irq(cy_isa_irq, card); | |
3137553d JS |
3329 | iounmap(cy_isa_address); |
3330 | continue; | |
3331 | } | |
02f1175c JS |
3332 | nboard++; |
3333 | ||
21719191 JS |
3334 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3335 | "%d channels starting from port %d\n", | |
02f1175c JS |
3336 | j + 1, (unsigned long)cy_isa_address, |
3337 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3338 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3339 | ||
734cc178 JS |
3340 | for (k = 0, j = cy_next_channel; |
3341 | j < cy_next_channel + cy_isa_nchan; j++, k++) | |
3342 | tty_port_register_device(&card->ports[k].port, | |
3343 | cy_serial_driver, j, NULL); | |
02f1175c JS |
3344 | cy_next_channel += cy_isa_nchan; |
3345 | } | |
096dcfce | 3346 | return nboard; |
1da177e4 | 3347 | #else |
096dcfce | 3348 | return 0; |
02f1175c JS |
3349 | #endif /* CONFIG_ISA */ |
3350 | } /* cy_detect_isa */ | |
1da177e4 | 3351 | |
58936d8d | 3352 | #ifdef CONFIG_PCI |
9671f099 | 3353 | static inline int cyc_isfwstr(const char *str, unsigned int size) |
054f5b0a JS |
3354 | { |
3355 | unsigned int a; | |
3356 | ||
3357 | for (a = 0; a < size && *str; a++, str++) | |
3358 | if (*str & 0x80) | |
3359 | return -EINVAL; | |
3360 | ||
3361 | for (; a < size; a++, str++) | |
3362 | if (*str) | |
3363 | return -EINVAL; | |
3364 | ||
3365 | return 0; | |
3366 | } | |
3367 | ||
9671f099 | 3368 | static inline void cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3369 | unsigned int size) |
3370 | { | |
3371 | for (; size > 0; size--) { | |
3372 | cy_writel(fpga, *data++); | |
3373 | udelay(10); | |
3374 | } | |
3375 | } | |
3376 | ||
9671f099 | 3377 | static void plx_init(struct pci_dev *pdev, int irq, |
054f5b0a | 3378 | struct RUNTIME_9060 __iomem *addr) |
1da177e4 | 3379 | { |
02f1175c | 3380 | /* Reset PLX */ |
054f5b0a | 3381 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3382 | udelay(100L); |
054f5b0a | 3383 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3384 | |
3385 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3386 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3387 | udelay(100L); |
054f5b0a JS |
3388 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3389 | ||
3390 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3391 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3392 | * registers. This will remain here until we find a permanent fix. | |
3393 | */ | |
3394 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3395 | } | |
3396 | ||
9671f099 | 3397 | static int __cyz_load_fw(const struct firmware *fw, |
054f5b0a JS |
3398 | const char *name, const u32 mailbox, void __iomem *base, |
3399 | void __iomem *fpga) | |
3400 | { | |
f61e761e DW |
3401 | const void *ptr = fw->data; |
3402 | const struct zfile_header *h = ptr; | |
3403 | const struct zfile_config *c, *cs; | |
3404 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3405 | unsigned int a, tmp, len = fw->size; |
3406 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3407 | if (len < sizeof(*h)) { | |
3408 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3409 | return -EINVAL; | |
3410 | } | |
3411 | ||
3412 | cs = ptr + h->config_offset; | |
3413 | bs = ptr + h->block_offset; | |
3414 | ||
3415 | if ((void *)(cs + h->n_config) > ptr + len || | |
3416 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3417 | printk(BAD_FW "too short"); | |
3418 | return -EINVAL; | |
3419 | } | |
3420 | ||
3421 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3422 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3423 | printk(BAD_FW "bad formatted header string\n"); | |
3424 | return -EINVAL; | |
3425 | } | |
3426 | ||
3427 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3428 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3429 | return -EINVAL; | |
3430 | } | |
3431 | ||
3432 | tmp = 0; | |
3433 | for (c = cs; c < cs + h->n_config; c++) { | |
3434 | for (a = 0; a < c->n_blocks; a++) | |
3435 | if (c->block_list[a] > h->n_blocks) { | |
3436 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3437 | return -EINVAL; | |
3438 | } | |
3439 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3440 | tmp++; | |
3441 | } | |
3442 | if (!tmp) { | |
3443 | printk(BAD_FW "nothing appropriate\n"); | |
3444 | return -EINVAL; | |
3445 | } | |
3446 | ||
3447 | for (b = bs; b < bs + h->n_blocks; b++) | |
3448 | if (b->file_offset + b->size > len) { | |
3449 | printk(BAD_FW "bad block data offset\n"); | |
3450 | return -EINVAL; | |
3451 | } | |
3452 | ||
3453 | /* everything is OK, let's seek'n'load it */ | |
3454 | for (c = cs; c < cs + h->n_config; c++) | |
3455 | if (c->mailbox == mailbox && c->function == 0) | |
3456 | break; | |
3457 | ||
3458 | for (a = 0; a < c->n_blocks; a++) { | |
3459 | b = &bs[c->block_list[a]]; | |
3460 | if (b->type == ZBLOCK_FPGA) { | |
3461 | if (fpga != NULL) | |
3462 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3463 | b->size); | |
3464 | } else { | |
3465 | if (base != NULL) | |
3466 | memcpy_toio(base + b->ram_offset, | |
3467 | ptr + b->file_offset, b->size); | |
3468 | } | |
3469 | } | |
3470 | #undef BAD_FW | |
3471 | return 0; | |
3472 | } | |
3473 | ||
9671f099 | 3474 | static int cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, |
054f5b0a JS |
3475 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) |
3476 | { | |
3477 | const struct firmware *fw; | |
3478 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3479 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3480 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3481 | void __iomem *tmp; |
963118ee | 3482 | u32 mailbox, status, nchan; |
054f5b0a JS |
3483 | unsigned int i; |
3484 | int retval; | |
3485 | ||
3486 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3487 | if (retval) { | |
3488 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3489 | goto err; | |
3490 | } | |
3491 | ||
3492 | /* Check whether the firmware is already loaded and running. If | |
3493 | positive, skip this board */ | |
2693f485 | 3494 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3495 | u32 cntval = readl(base_addr + 0x190); |
3496 | ||
3497 | udelay(100); | |
3498 | if (cntval != readl(base_addr + 0x190)) { | |
3499 | /* FW counter is working, FW is running */ | |
3500 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3501 | "Skipping board.\n"); | |
3502 | retval = 0; | |
3503 | goto err_rel; | |
3504 | } | |
3505 | } | |
3506 | ||
3507 | /* start boot */ | |
3508 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3509 | ~0x00030800UL); | |
3510 | ||
3511 | mailbox = readl(&ctl_addr->mail_box_0); | |
3512 | ||
2693f485 | 3513 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3514 | /* stops CPU and set window to beginning of RAM */ |
3515 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3516 | cy_writel(&cust->cpu_stop, 0); | |
3517 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3518 | udelay(100); | |
3519 | } | |
3520 | ||
3521 | plx_init(pdev, irq, ctl_addr); | |
3522 | ||
3523 | if (mailbox != 0) { | |
3524 | /* load FPGA */ | |
3525 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3526 | base_addr); | |
3527 | if (retval) | |
3528 | goto err_rel; | |
2693f485 | 3529 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3530 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3531 | "not loaded\n"); | |
3532 | goto err_rel; | |
3533 | } | |
3534 | } | |
3535 | ||
3536 | /* stops CPU and set window to beginning of RAM */ | |
3537 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3538 | cy_writel(&cust->cpu_stop, 0); | |
3539 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3540 | udelay(100); | |
3541 | ||
3542 | /* clear memory */ | |
c4923b4f | 3543 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3544 | cy_writeb(tmp, 255); |
3545 | if (mailbox != 0) { | |
3546 | /* set window to last 512K of RAM */ | |
3547 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3548 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3549 | cy_writeb(tmp, 255); |
3550 | /* set window to beginning of RAM */ | |
3551 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3552 | } |
3553 | ||
3554 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3555 | release_firmware(fw); | |
3556 | if (retval) | |
3557 | goto err; | |
3558 | ||
3559 | /* finish boot and start boards */ | |
3560 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3561 | cy_writel(&cust->cpu_start, 0); | |
3562 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3563 | i = 0; | |
3564 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3565 | msleep(100); | |
3566 | if (status != ZFIRM_ID) { | |
3567 | if (status == ZFIRM_HLT) { | |
3568 | dev_err(&pdev->dev, "you need an external power supply " | |
3569 | "for this number of ports. Firmware halted and " | |
3570 | "board reset.\n"); | |
3571 | retval = -EIO; | |
3572 | goto err; | |
3573 | } | |
3574 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3575 | "some more time\n", status); | |
3576 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3577 | i++ < 200) | |
3578 | msleep(100); | |
3579 | if (status != ZFIRM_ID) { | |
3580 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3581 | "Giving up. (fid->signature = 0x%x)\n", | |
3582 | status); | |
3583 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3584 | "upgrading the FW, please power cycle the " | |
3585 | "system before loading the new FW to the " | |
3586 | "Cyclades-Z.\n"); | |
3587 | ||
2693f485 | 3588 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3589 | plx_init(pdev, irq, ctl_addr); |
3590 | ||
3591 | retval = -EIO; | |
3592 | goto err; | |
3593 | } | |
3594 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3595 | i / 10); | |
3596 | } | |
3597 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3598 | ||
3599 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3600 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3601 | base_addr + readl(&fid->zfwctrl_addr)); | |
3602 | ||
963118ee | 3603 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3604 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3605 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3606 | |
963118ee | 3607 | if (nchan == 0) { |
054f5b0a JS |
3608 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3609 | "check the connection between the Z host card and the " | |
3610 | "serial expanders.\n"); | |
3611 | ||
2693f485 | 3612 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3613 | plx_init(pdev, irq, ctl_addr); |
3614 | ||
3615 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3616 | "reset.\n"); | |
3617 | retval = 0; | |
3618 | goto err; | |
3619 | } | |
3620 | ||
3621 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3622 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3623 | ||
3624 | /* | |
3625 | Early firmware failed to start looking for commands. | |
3626 | This enables firmware interrupts for those commands. | |
3627 | */ | |
3628 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3629 | (1 << 17)); | |
3630 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3631 | 0x00030800UL); | |
3632 | ||
963118ee | 3633 | return nchan; |
054f5b0a JS |
3634 | err_rel: |
3635 | release_firmware(fw); | |
3636 | err: | |
3637 | return retval; | |
1da177e4 LT |
3638 | } |
3639 | ||
9671f099 | 3640 | static int cy_pci_probe(struct pci_dev *pdev, |
58936d8d | 3641 | const struct pci_device_id *ent) |
1da177e4 | 3642 | { |
718c4ca1 | 3643 | struct cyclades_card *card; |
3137553d JS |
3644 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3645 | char *card_name = NULL; | |
101b8159 | 3646 | u32 uninitialized_var(mailbox); |
734cc178 | 3647 | unsigned int device_id, nchan = 0, card_no, i, j; |
3137553d JS |
3648 | unsigned char plx_ver; |
3649 | int retval, irq; | |
02f1175c | 3650 | |
58936d8d JS |
3651 | retval = pci_enable_device(pdev); |
3652 | if (retval) { | |
3653 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3654 | goto err; |
58936d8d | 3655 | } |
1da177e4 | 3656 | |
58936d8d | 3657 | /* read PCI configuration area */ |
3137553d | 3658 | irq = pdev->irq; |
58936d8d | 3659 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3660 | |
3137553d JS |
3661 | #if defined(__alpha__) |
3662 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3663 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3664 | "addresses on Alpha systems.\n"); | |
3665 | retval = -EIO; | |
3666 | goto err_dis; | |
3667 | } | |
3668 | #endif | |
3669 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3670 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3671 | "addresses\n"); | |
3672 | retval = -EIO; | |
3673 | goto err_dis; | |
3674 | } | |
3675 | ||
3676 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3677 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3678 | "it...\n"); | |
3679 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3680 | } | |
3681 | ||
3682 | retval = pci_request_regions(pdev, "cyclades"); | |
3683 | if (retval) { | |
3684 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3685 | goto err_dis; | |
3686 | } | |
3687 | ||
3688 | retval = -EIO; | |
58936d8d JS |
3689 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3690 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3691 | card_name = "Cyclom-Y"; |
1da177e4 | 3692 | |
24e6fd4c JS |
3693 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3694 | CyPCI_Yctl); | |
3137553d JS |
3695 | if (addr0 == NULL) { |
3696 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3697 | goto err_reg; | |
58936d8d | 3698 | } |
24e6fd4c JS |
3699 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3700 | CyPCI_Ywin); | |
3137553d JS |
3701 | if (addr2 == NULL) { |
3702 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3703 | goto err_unmap; | |
58936d8d | 3704 | } |
1da177e4 | 3705 | |
3137553d JS |
3706 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3707 | if (nchan == 0) { | |
21719191 JS |
3708 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3709 | "Serial-Modules\n"); | |
c847d47c | 3710 | goto err_unmap; |
58936d8d | 3711 | } |
58936d8d | 3712 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3713 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3714 | |
24e6fd4c JS |
3715 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3716 | CyPCI_Zctl); | |
3137553d JS |
3717 | if (addr0 == NULL) { |
3718 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3719 | goto err_reg; | |
3720 | } | |
58936d8d JS |
3721 | |
3722 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3723 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3724 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3725 | |
054f5b0a | 3726 | plx_init(pdev, irq, addr0); |
02f1175c | 3727 | |
101b8159 | 3728 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3729 | |
24e6fd4c JS |
3730 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3731 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3732 | if (addr2 == NULL) { |
3733 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3734 | goto err_unmap; | |
58936d8d JS |
3735 | } |
3736 | ||
3737 | if (mailbox == ZE_V1) { | |
3137553d | 3738 | card_name = "Cyclades-Ze"; |
58936d8d | 3739 | } else { |
3137553d | 3740 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3741 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3742 | if (mailbox == ZO_V1) { |
3743 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3744 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3745 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3746 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3747 | fpga_id)), (ulong)(0xff & | |
3748 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3749 | fpga_version))); | |
3750 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3751 | } else { | |
3752 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3753 | "Cyclades-Z board. FPGA not loaded\n"); | |
3754 | } | |
1da177e4 | 3755 | #endif |
3137553d JS |
3756 | /* The following clears the firmware id word. This |
3757 | ensures that the driver will not attempt to talk to | |
3758 | the board until it has been properly initialized. | |
3759 | */ | |
3760 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
3761 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 3762 | } |
ace08c3c JS |
3763 | |
3764 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 3765 | if (retval <= 0) |
ace08c3c | 3766 | goto err_unmap; |
963118ee | 3767 | nchan = retval; |
3137553d JS |
3768 | } |
3769 | ||
3770 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
3771 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3772 | "channels are available. Change NR_PORTS in " | |
3773 | "cyclades.c and recompile kernel.\n"); | |
3774 | goto err_unmap; | |
3775 | } | |
3776 | /* fill the next cy_card structure available */ | |
3777 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
718c4ca1 JS |
3778 | card = &cy_card[card_no]; |
3779 | if (card->base_addr == NULL) | |
3137553d JS |
3780 | break; |
3781 | } | |
3782 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
3783 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3784 | "more cards can be used. Change NR_CARDS in " | |
3785 | "cyclades.c and recompile kernel.\n"); | |
3786 | goto err_unmap; | |
3787 | } | |
3788 | ||
3789 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
3790 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3791 | /* allocate IRQ */ | |
3792 | retval = request_irq(irq, cyy_interrupt, | |
718c4ca1 | 3793 | IRQF_SHARED, "Cyclom-Y", card); |
3137553d JS |
3794 | if (retval) { |
3795 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
3796 | goto err_unmap; | |
58936d8d | 3797 | } |
718c4ca1 | 3798 | card->num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 3799 | } else { |
f0eefdc3 JS |
3800 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
3801 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3802 | ||
3803 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3804 | ||
718c4ca1 JS |
3805 | card->hw_ver = mailbox; |
3806 | card->num_chips = (unsigned int)-1; | |
3807 | card->board_ctrl = &zfw_ctrl->board_ctrl; | |
02f1175c | 3808 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 3809 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
3810 | if (irq != 0 && irq != 255) { |
3811 | retval = request_irq(irq, cyz_interrupt, | |
718c4ca1 | 3812 | IRQF_SHARED, "Cyclades-Z", card); |
58936d8d | 3813 | if (retval) { |
21719191 | 3814 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 3815 | goto err_unmap; |
02f1175c | 3816 | } |
58936d8d | 3817 | } |
02f1175c | 3818 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 3819 | } |
02f1175c | 3820 | |
3137553d | 3821 | /* set cy_card */ |
718c4ca1 JS |
3822 | card->base_addr = addr2; |
3823 | card->ctl_addr.p9050 = addr0; | |
3824 | card->irq = irq; | |
3825 | card->bus_index = 1; | |
3826 | card->first_line = cy_next_channel; | |
3827 | card->nports = nchan; | |
3828 | retval = cy_init_card(card); | |
3137553d JS |
3829 | if (retval) |
3830 | goto err_null; | |
58936d8d | 3831 | |
718c4ca1 | 3832 | pci_set_drvdata(pdev, card); |
58936d8d | 3833 | |
3137553d JS |
3834 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3835 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3836 | /* enable interrupts in the PCI interface */ | |
3837 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
3838 | switch (plx_ver) { | |
3839 | case PLX_9050: | |
3137553d JS |
3840 | cy_writeb(addr0 + 0x4c, 0x43); |
3841 | break; | |
3842 | ||
3843 | case PLX_9060: | |
3844 | case PLX_9080: | |
3845 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
3846 | { |
3847 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
3848 | plx_init(pdev, irq, ctl_addr); | |
3849 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
3850 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
3851 | break; |
3852 | } | |
97e87f8e | 3853 | } |
58936d8d JS |
3854 | } |
3855 | ||
3137553d JS |
3856 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
3857 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
734cc178 JS |
3858 | for (j = 0, i = cy_next_channel; i < cy_next_channel + nchan; i++, j++) |
3859 | tty_port_register_device(&card->ports[j].port, | |
3860 | cy_serial_driver, i, &pdev->dev); | |
3137553d JS |
3861 | cy_next_channel += nchan; |
3862 | ||
58936d8d | 3863 | return 0; |
3137553d | 3864 | err_null: |
718c4ca1 JS |
3865 | card->base_addr = NULL; |
3866 | free_irq(irq, card); | |
3137553d | 3867 | err_unmap: |
24e6fd4c | 3868 | iounmap(addr0); |
3137553d | 3869 | if (addr2) |
24e6fd4c | 3870 | iounmap(addr2); |
3137553d JS |
3871 | err_reg: |
3872 | pci_release_regions(pdev); | |
3873 | err_dis: | |
3874 | pci_disable_device(pdev); | |
3875 | err: | |
3876 | return retval; | |
58936d8d | 3877 | } |
58936d8d | 3878 | |
ae8d8a14 | 3879 | static void cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 3880 | { |
38d09093 | 3881 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
191c5f10 | 3882 | unsigned int i, channel; |
38d09093 | 3883 | |
85c93fa9 | 3884 | /* non-Z with old PLX */ |
2693f485 | 3885 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 3886 | PLX_9050) |
97e87f8e | 3887 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
3888 | else |
3889 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3890 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 3891 | #endif |
97e87f8e JS |
3892 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
3893 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
3894 | ~0x0900); | |
85c93fa9 | 3895 | |
24e6fd4c | 3896 | iounmap(cinfo->base_addr); |
97e87f8e JS |
3897 | if (cinfo->ctl_addr.p9050) |
3898 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
3899 | if (cinfo->irq |
3900 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3901 | && !cy_is_Z(cinfo) |
38d09093 JS |
3902 | #endif /* CONFIG_CYZ_INTR */ |
3903 | ) | |
3904 | free_irq(cinfo->irq, cinfo); | |
3905 | pci_release_regions(pdev); | |
3906 | ||
3907 | cinfo->base_addr = NULL; | |
191c5f10 JS |
3908 | for (channel = 0, i = cinfo->first_line; i < cinfo->first_line + |
3909 | cinfo->nports; i++, channel++) { | |
6ad1ccc1 | 3910 | tty_unregister_device(cy_serial_driver, i); |
191c5f10 JS |
3911 | tty_port_destroy(&cinfo->ports[channel].port); |
3912 | } | |
dd025c0c JS |
3913 | cinfo->nports = 0; |
3914 | kfree(cinfo->ports); | |
38d09093 JS |
3915 | } |
3916 | ||
6747cd93 JS |
3917 | static struct pci_driver cy_pci_driver = { |
3918 | .name = "cyclades", | |
3919 | .id_table = cy_pci_dev_id, | |
3920 | .probe = cy_pci_probe, | |
91116cba | 3921 | .remove = cy_pci_remove |
6747cd93 JS |
3922 | }; |
3923 | #endif | |
3924 | ||
444697d6 | 3925 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 3926 | { |
02f1175c | 3927 | struct cyclades_port *info; |
dd025c0c | 3928 | unsigned int i, j; |
02f1175c JS |
3929 | __u32 cur_jifs = jiffies; |
3930 | ||
444697d6 | 3931 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
3932 | "IdleIn Overruns Ldisc\n"); |
3933 | ||
02f1175c | 3934 | /* Output one line for each known port */ |
dd025c0c JS |
3935 | for (i = 0; i < NR_CARDS; i++) |
3936 | for (j = 0; j < cy_card[i].nports; j++) { | |
3937 | info = &cy_card[i].ports[j]; | |
3938 | ||
d13549f8 JS |
3939 | if (info->port.count) { |
3940 | /* XXX is the ldisc num worth this? */ | |
3941 | struct tty_struct *tty; | |
3942 | struct tty_ldisc *ld; | |
3943 | int num = 0; | |
3944 | tty = tty_port_tty_get(&info->port); | |
3945 | if (tty) { | |
3946 | ld = tty_ldisc_ref(tty); | |
3947 | if (ld) { | |
3948 | num = ld->ops->num; | |
3949 | tty_ldisc_deref(ld); | |
3950 | } | |
3951 | tty_kref_put(tty); | |
3952 | } | |
444697d6 | 3953 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 3954 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
3955 | (cur_jifs - info->idle_stats.in_use) / |
3956 | HZ, info->idle_stats.xmit_bytes, | |
3957 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
3958 | HZ, info->idle_stats.recv_bytes, | |
3959 | (cur_jifs - info->idle_stats.recv_idle)/ | |
3960 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
3961 | num); |
3962 | } else | |
444697d6 | 3963 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
3964 | "%10lu %8lu %9lu %6ld\n", |
3965 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 3966 | } |
444697d6 AD |
3967 | return 0; |
3968 | } | |
3969 | ||
1da177e4 LT |
3970 | /* The serial driver boot-time initialization code! |
3971 | Hardware I/O ports are mapped to character special devices on a | |
3972 | first found, first allocated manner. That is, this code searches | |
3973 | for Cyclom cards in the system. As each is found, it is probed | |
3974 | to discover how many chips (and thus how many ports) are present. | |
3975 | These ports are mapped to the tty ports 32 and upward in monotonic | |
3976 | fashion. If an 8-port card is replaced with a 16-port card, the | |
3977 | port mapping on a following card will shift. | |
3978 | ||
3979 | This approach is different from what is used in the other serial | |
3980 | device driver because the Cyclom is more properly a multiplexer, | |
3981 | not just an aggregation of serial ports on one card. | |
3982 | ||
3983 | If there are more cards with more ports than have been | |
3984 | statically allocated above, a warning is printed and the | |
3985 | extra ports are ignored. | |
3986 | */ | |
3987 | ||
b68e31d0 | 3988 | static const struct tty_operations cy_ops = { |
02f1175c JS |
3989 | .open = cy_open, |
3990 | .close = cy_close, | |
3991 | .write = cy_write, | |
3992 | .put_char = cy_put_char, | |
3993 | .flush_chars = cy_flush_chars, | |
3994 | .write_room = cy_write_room, | |
3995 | .chars_in_buffer = cy_chars_in_buffer, | |
3996 | .flush_buffer = cy_flush_buffer, | |
3997 | .ioctl = cy_ioctl, | |
3998 | .throttle = cy_throttle, | |
3999 | .unthrottle = cy_unthrottle, | |
4000 | .set_termios = cy_set_termios, | |
4001 | .stop = cy_stop, | |
4002 | .start = cy_start, | |
4003 | .hangup = cy_hangup, | |
4004 | .break_ctl = cy_break, | |
4005 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4006 | .tiocmget = cy_tiocmget, |
4007 | .tiocmset = cy_tiocmset, | |
0587102c | 4008 | .get_icount = cy_get_icount, |
6fbf9582 AV |
4009 | .set_serial = cy_set_serial_info, |
4010 | .get_serial = cy_get_serial_info, | |
8a8dcabf | 4011 | .proc_show = cyclades_proc_show, |
1da177e4 LT |
4012 | }; |
4013 | ||
02f1175c | 4014 | static int __init cy_init(void) |
1da177e4 | 4015 | { |
dd025c0c | 4016 | unsigned int nboards; |
9dacf3b2 | 4017 | int retval = -ENOMEM; |
02f1175c JS |
4018 | |
4019 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4020 | if (!cy_serial_driver) | |
9dacf3b2 | 4021 | goto err; |
21719191 | 4022 | |
64a14b51 | 4023 | printk(KERN_INFO "Cyclades driver " CY_VERSION "\n"); |
02f1175c JS |
4024 | |
4025 | /* Initialize the tty_driver structure */ | |
4026 | ||
02f1175c JS |
4027 | cy_serial_driver->driver_name = "cyclades"; |
4028 | cy_serial_driver->name = "ttyC"; | |
4029 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4030 | cy_serial_driver->minor_start = 0; | |
4031 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4032 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4033 | cy_serial_driver->init_termios = tty_std_termios; | |
4034 | cy_serial_driver->init_termios.c_cflag = | |
4035 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4036 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4037 | tty_set_operations(cy_serial_driver, &cy_ops); |
4038 | ||
9dacf3b2 JS |
4039 | retval = tty_register_driver(cy_serial_driver); |
4040 | if (retval) { | |
4041 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4042 | goto err_frtty; | |
4043 | } | |
02f1175c | 4044 | |
02f1175c JS |
4045 | /* the code below is responsible to find the boards. Each different |
4046 | type of board has its own detection routine. If a board is found, | |
4047 | the next cy_card structure available is set by the detection | |
4048 | routine. These functions are responsible for checking the | |
4049 | availability of cy_card and cy_port data structures and updating | |
4050 | the cy_next_channel. */ | |
4051 | ||
4052 | /* look for isa boards */ | |
14a55a67 | 4053 | nboards = cy_detect_isa(); |
02f1175c | 4054 | |
6747cd93 | 4055 | #ifdef CONFIG_PCI |
02f1175c | 4056 | /* look for pci boards */ |
6747cd93 | 4057 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4058 | if (retval && !nboards) { |
4059 | tty_unregister_driver(cy_serial_driver); | |
4060 | goto err_frtty; | |
4061 | } | |
6747cd93 | 4062 | #endif |
9dacf3b2 JS |
4063 | |
4064 | return 0; | |
9dacf3b2 JS |
4065 | err_frtty: |
4066 | put_tty_driver(cy_serial_driver); | |
4067 | err: | |
4068 | return retval; | |
02f1175c | 4069 | } /* cy_init */ |
1da177e4 | 4070 | |
02f1175c | 4071 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4072 | { |
dd025c0c | 4073 | struct cyclades_card *card; |
65f76a82 | 4074 | unsigned int i, e1; |
1da177e4 LT |
4075 | |
4076 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4077 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4078 | #endif /* CONFIG_CYZ_INTR */ |
4079 | ||
15ed6cc0 AC |
4080 | e1 = tty_unregister_driver(cy_serial_driver); |
4081 | if (e1) | |
21719191 JS |
4082 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4083 | "driver(%d)\n", e1); | |
1da177e4 | 4084 | |
6747cd93 JS |
4085 | #ifdef CONFIG_PCI |
4086 | pci_unregister_driver(&cy_pci_driver); | |
4087 | #endif | |
4088 | ||
02f1175c | 4089 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4090 | card = &cy_card[i]; |
4091 | if (card->base_addr) { | |
85c93fa9 | 4092 | /* clear interrupt */ |
dd025c0c JS |
4093 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4094 | iounmap(card->base_addr); | |
97e87f8e JS |
4095 | if (card->ctl_addr.p9050) |
4096 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4097 | if (card->irq |
1da177e4 | 4098 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4099 | && !cy_is_Z(card) |
1da177e4 | 4100 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4101 | ) |
dd025c0c | 4102 | free_irq(card->irq, card); |
65f76a82 | 4103 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4104 | card->nports; e1++) |
6ad1ccc1 | 4105 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4106 | kfree(card->ports); |
02f1175c JS |
4107 | } |
4108 | } | |
f2462bfe JS |
4109 | |
4110 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4111 | } /* cy_cleanup_module */ |
4112 | ||
4113 | module_init(cy_init); | |
4114 | module_exit(cy_cleanup_module); | |
4115 | ||
4116 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4117 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4118 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |
e6c4ef98 | 4119 | MODULE_FIRMWARE("cyzfirm.bin"); |