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Commit | Line | Data |
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1da177e4 LT |
1 | #undef BLOCKMOVE |
2 | #define Z_WAKE | |
3 | #undef Z_EXT_CHARS_IN_BUFFER | |
1da177e4 LT |
4 | |
5 | /* | |
6 | * linux/drivers/char/cyclades.c | |
7 | * | |
8 | * This file contains the driver for the Cyclades async multiport | |
9 | * serial boards. | |
10 | * | |
11 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
12 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
1da177e4 | 13 | * |
ebdb5135 | 14 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
15 | * |
16 | * Much of the design and some of the code came from serial.c | |
17 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
18 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
19 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 20 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 | 21 | * |
1da177e4 LT |
22 | */ |
23 | ||
ebdb5135 | 24 | #define CY_VERSION "2.6" |
096dcfce | 25 | |
1da177e4 LT |
26 | /* If you need to install more boards than NR_CARDS, change the constant |
27 | in the definition below. No other change is necessary to support up to | |
28 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
29 | ||
02f1175c | 30 | #define NR_CARDS 4 |
1da177e4 LT |
31 | |
32 | /* | |
33 | If the total number of ports is larger than NR_PORTS, change this | |
34 | constant in the definition below. No other change is necessary to | |
35 | support more boards/ports. */ | |
36 | ||
02f1175c | 37 | #define NR_PORTS 256 |
1da177e4 | 38 | |
1da177e4 LT |
39 | #define ZO_V1 0 |
40 | #define ZO_V2 1 | |
41 | #define ZE_V1 2 | |
42 | ||
43 | #define SERIAL_PARANOIA_CHECK | |
44 | #undef CY_DEBUG_OPEN | |
45 | #undef CY_DEBUG_THROTTLE | |
46 | #undef CY_DEBUG_OTHER | |
47 | #undef CY_DEBUG_IO | |
48 | #undef CY_DEBUG_COUNT | |
49 | #undef CY_DEBUG_DTR | |
50 | #undef CY_DEBUG_WAIT_UNTIL_SENT | |
51 | #undef CY_DEBUG_INTERRUPTS | |
52 | #undef CY_16Y_HACK | |
53 | #undef CY_ENABLE_MONITORING | |
54 | #undef CY_PCI_DEBUG | |
55 | ||
1da177e4 | 56 | /* |
15ed6cc0 | 57 | * Include section |
1da177e4 | 58 | */ |
1da177e4 LT |
59 | #include <linux/module.h> |
60 | #include <linux/errno.h> | |
61 | #include <linux/signal.h> | |
62 | #include <linux/sched.h> | |
63 | #include <linux/timer.h> | |
64 | #include <linux/interrupt.h> | |
65 | #include <linux/tty.h> | |
33f0f88f | 66 | #include <linux/tty_flip.h> |
1da177e4 | 67 | #include <linux/serial.h> |
405f5571 | 68 | #include <linux/smp_lock.h> |
1da177e4 LT |
69 | #include <linux/major.h> |
70 | #include <linux/string.h> | |
71 | #include <linux/fcntl.h> | |
72 | #include <linux/ptrace.h> | |
73 | #include <linux/cyclades.h> | |
74 | #include <linux/mm.h> | |
75 | #include <linux/ioport.h> | |
76 | #include <linux/init.h> | |
77 | #include <linux/delay.h> | |
78 | #include <linux/spinlock.h> | |
79 | #include <linux/bitops.h> | |
054f5b0a | 80 | #include <linux/firmware.h> |
9f56fad7 | 81 | #include <linux/device.h> |
1da177e4 | 82 | |
15ed6cc0 | 83 | #include <linux/io.h> |
15ed6cc0 | 84 | #include <linux/uaccess.h> |
1da177e4 | 85 | |
1da177e4 LT |
86 | #include <linux/kernel.h> |
87 | #include <linux/pci.h> | |
88 | ||
89 | #include <linux/stat.h> | |
90 | #include <linux/proc_fs.h> | |
444697d6 | 91 | #include <linux/seq_file.h> |
1da177e4 | 92 | |
02f1175c JS |
93 | static void cy_throttle(struct tty_struct *tty); |
94 | static void cy_send_xchar(struct tty_struct *tty, char ch); | |
1da177e4 | 95 | |
1da177e4 LT |
96 | #ifndef SERIAL_XMIT_SIZE |
97 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
98 | #endif | |
1da177e4 LT |
99 | |
100 | #define STD_COM_FLAGS (0) | |
101 | ||
054f5b0a JS |
102 | /* firmware stuff */ |
103 | #define ZL_MAX_BLOCKS 16 | |
104 | #define DRIVER_VERSION 0x02010203 | |
105 | #define RAM_SIZE 0x80000 | |
106 | ||
054f5b0a JS |
107 | enum zblock_type { |
108 | ZBLOCK_PRG = 0, | |
109 | ZBLOCK_FPGA = 1 | |
110 | }; | |
111 | ||
112 | struct zfile_header { | |
113 | char name[64]; | |
114 | char date[32]; | |
115 | char aux[32]; | |
116 | u32 n_config; | |
117 | u32 config_offset; | |
118 | u32 n_blocks; | |
119 | u32 block_offset; | |
120 | u32 reserved[9]; | |
121 | } __attribute__ ((packed)); | |
122 | ||
123 | struct zfile_config { | |
124 | char name[64]; | |
125 | u32 mailbox; | |
126 | u32 function; | |
127 | u32 n_blocks; | |
128 | u32 block_list[ZL_MAX_BLOCKS]; | |
129 | } __attribute__ ((packed)); | |
130 | ||
131 | struct zfile_block { | |
132 | u32 type; | |
133 | u32 file_offset; | |
134 | u32 ram_offset; | |
135 | u32 size; | |
136 | } __attribute__ ((packed)); | |
137 | ||
1da177e4 LT |
138 | static struct tty_driver *cy_serial_driver; |
139 | ||
140 | #ifdef CONFIG_ISA | |
141 | /* This is the address lookup table. The driver will probe for | |
142 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
143 | driver to probe addresses at a different address, add it to | |
144 | this table. If the driver is probing some other board and | |
145 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
146 | */ |
147 | ||
148 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
149 | 0xD0000, |
150 | 0xD2000, | |
151 | 0xD4000, | |
152 | 0xD6000, | |
153 | 0xD8000, | |
154 | 0xDA000, | |
155 | 0xDC000, | |
156 | 0xDE000, | |
157 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 158 | }; |
02f1175c | 159 | |
fe971071 | 160 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 LT |
161 | |
162 | #ifdef MODULE | |
3046d50e JS |
163 | static long maddr[NR_CARDS]; |
164 | static int irq[NR_CARDS]; | |
1da177e4 LT |
165 | |
166 | module_param_array(maddr, long, NULL, 0); | |
167 | module_param_array(irq, int, NULL, 0); | |
168 | #endif | |
169 | ||
02f1175c | 170 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
171 | |
172 | /* This is the per-card data structure containing address, irq, number of | |
173 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
174 | */ | |
175 | static struct cyclades_card cy_card[NR_CARDS]; | |
176 | ||
02f1175c | 177 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 178 | |
1da177e4 LT |
179 | /* |
180 | * This is used to look up the divisor speeds and the timeouts | |
181 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 182 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
183 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
184 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
185 | * HI VHI | |
186 | * 20 | |
187 | */ | |
ebdb5135 | 188 | static const int baud_table[] = { |
02f1175c JS |
189 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
190 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
191 | 230400, 0 | |
192 | }; | |
193 | ||
ebdb5135 | 194 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
195 | /* value => 00 01 02 03 04 */ |
196 | /* divide by 8 32 128 512 2048 */ | |
197 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
198 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
199 | }; | |
200 | ||
ebdb5135 | 201 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
202 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
203 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
204 | }; | |
205 | ||
ebdb5135 | 206 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
207 | /* value => 00 01 02 03 04 */ |
208 | /* divide by 8 32 128 512 2048 */ | |
209 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
210 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
211 | 0x00 | |
212 | }; | |
213 | ||
ebdb5135 | 214 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
215 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
216 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
217 | 0x21 | |
218 | }; | |
219 | ||
ebdb5135 | 220 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
221 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
222 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
223 | 0x07 | |
224 | }; | |
1da177e4 LT |
225 | |
226 | /* | |
227 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
228 | * The cyclades_port structure member rflow and the vector rflow_thr |
229 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
230 | * data loss even when the system interrupt latency is too high. These flags | |
231 | * are to be used only with very special applications. Setting these flags | |
232 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
233 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
234 | * cables. |
235 | */ | |
236 | ||
ebdb5135 | 237 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
238 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
239 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
240 | 0x0a | |
241 | }; | |
1da177e4 LT |
242 | |
243 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
244 | * address order. This look-up table overcomes that problem. | |
245 | */ | |
f0eefdc3 | 246 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
247 | 0x0400, |
248 | 0x0800, | |
249 | 0x0C00, | |
250 | 0x0200, | |
251 | 0x0600, | |
252 | 0x0A00, | |
253 | 0x0E00 | |
254 | }; | |
1da177e4 LT |
255 | |
256 | /* PCI related definitions */ | |
257 | ||
1da177e4 | 258 | #ifdef CONFIG_PCI |
ebdb5135 | 259 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
260 | /* PCI < 1Mb */ |
261 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
262 | /* PCI > 1Mb */ | |
263 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
264 | /* 4Y PCI < 1Mb */ | |
265 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
266 | /* 4Y PCI > 1Mb */ | |
267 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
268 | /* 8Y PCI < 1Mb */ | |
269 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
270 | /* 8Y PCI > 1Mb */ | |
271 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
272 | /* Z PCI < 1Mb */ | |
273 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
274 | /* Z PCI > 1Mb */ | |
275 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 276 | { } /* end of table */ |
02f1175c | 277 | }; |
893de2df | 278 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
279 | #endif |
280 | ||
281 | static void cy_start(struct tty_struct *); | |
d13549f8 | 282 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 283 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
284 | #ifdef CONFIG_ISA |
285 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 286 | #endif /* CONFIG_ISA */ |
1da177e4 | 287 | |
1da177e4 LT |
288 | #ifndef CONFIG_CYZ_INTR |
289 | static void cyz_poll(unsigned long); | |
290 | ||
291 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
292 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
293 | ||
8d06afab | 294 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 295 | |
02f1175c | 296 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
297 | static void cyz_rx_restart(unsigned long); |
298 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 299 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 300 | |
2693f485 JS |
301 | static inline bool cy_is_Z(struct cyclades_card *card) |
302 | { | |
303 | return card->num_chips == (unsigned int)-1; | |
304 | } | |
305 | ||
306 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
307 | { | |
308 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
309 | } | |
310 | ||
311 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
312 | { | |
313 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
314 | } | |
315 | ||
316 | static inline bool cyz_is_loaded(struct cyclades_card *card) | |
317 | { | |
318 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
319 | ||
320 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
321 | readl(&fw_id->signature) == ZFIRM_ID; | |
322 | } | |
323 | ||
02f1175c | 324 | static inline int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 325 | const char *name, const char *routine) |
1da177e4 LT |
326 | { |
327 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 328 | if (!info) { |
21719191 JS |
329 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
330 | "in %s\n", name, routine); | |
02f1175c JS |
331 | return 1; |
332 | } | |
333 | ||
02f1175c | 334 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
335 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
336 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
337 | return 1; |
338 | } | |
1da177e4 | 339 | #endif |
02f1175c | 340 | return 0; |
ebdb5135 | 341 | } |
1da177e4 | 342 | |
1da177e4 LT |
343 | /***********************************************************/ |
344 | /********* Start of block of Cyclom-Y specific code ********/ | |
345 | ||
346 | /* This routine waits up to 1000 micro-seconds for the previous | |
347 | command to the Cirrus chip to complete and then issues the | |
348 | new command. An error is returned if the previous command | |
349 | didn't finish within the time limit. | |
350 | ||
351 | This function is only called from inside spinlock-protected code. | |
352 | */ | |
15ed6cc0 | 353 | static int cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index) |
1da177e4 | 354 | { |
ad39c300 | 355 | unsigned int i; |
1da177e4 | 356 | |
02f1175c JS |
357 | /* Check to see that the previous command has completed */ |
358 | for (i = 0; i < 100; i++) { | |
15ed6cc0 | 359 | if (readb(base_addr + (CyCCR << index)) == 0) |
02f1175c | 360 | break; |
02f1175c | 361 | udelay(10L); |
1da177e4 | 362 | } |
02f1175c JS |
363 | /* if the CCR never cleared, the previous command |
364 | didn't finish within the "reasonable time" */ | |
365 | if (i == 100) | |
096dcfce | 366 | return -1; |
1da177e4 | 367 | |
02f1175c JS |
368 | /* Issue the new command */ |
369 | cy_writeb(base_addr + (CyCCR << index), cmd); | |
1da177e4 | 370 | |
096dcfce | 371 | return 0; |
02f1175c | 372 | } /* cyy_issue_cmd */ |
1da177e4 LT |
373 | |
374 | #ifdef CONFIG_ISA | |
375 | /* ISA interrupt detection code */ | |
15ed6cc0 | 376 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 377 | { |
02f1175c JS |
378 | int irq; |
379 | unsigned long irqs, flags; | |
380 | int save_xir, save_car; | |
381 | int index = 0; /* IRQ probing is only for ISA */ | |
382 | ||
383 | /* forget possible initially masked and pending IRQ */ | |
384 | irq = probe_irq_off(probe_irq_on()); | |
385 | ||
386 | /* Clear interrupts on the board first */ | |
387 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
388 | /* Cy_ClrIntr is 0x1800 */ | |
389 | ||
390 | irqs = probe_irq_on(); | |
391 | /* Wait ... */ | |
f6e208c1 | 392 | msleep(5); |
02f1175c JS |
393 | |
394 | /* Enable the Tx interrupts on the CD1400 */ | |
395 | local_irq_save(flags); | |
396 | cy_writeb(address + (CyCAR << index), 0); | |
397 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); | |
398 | ||
399 | cy_writeb(address + (CyCAR << index), 0); | |
400 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 401 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
402 | local_irq_restore(flags); |
403 | ||
404 | /* Wait ... */ | |
f6e208c1 | 405 | msleep(5); |
02f1175c JS |
406 | |
407 | /* Check which interrupt is in use */ | |
408 | irq = probe_irq_off(irqs); | |
409 | ||
410 | /* Clean up */ | |
db05c3b1 JS |
411 | save_xir = (u_char) readb(address + (CyTIR << index)); |
412 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
413 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
414 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 415 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
416 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
417 | cy_writeb(address + (CyCAR << index), (save_car)); | |
418 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
419 | /* Cy_ClrIntr is 0x1800 */ | |
420 | ||
421 | return (irq > 0) ? irq : 0; | |
1da177e4 | 422 | } |
02f1175c | 423 | #endif /* CONFIG_ISA */ |
1da177e4 | 424 | |
ce97a097 JS |
425 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
426 | void __iomem *base_addr) | |
e941027f JS |
427 | { |
428 | struct cyclades_port *info; | |
429 | struct tty_struct *tty; | |
65f76a82 JS |
430 | int len, index = cinfo->bus_index; |
431 | u8 save_xir, channel, save_car, data, char_count; | |
e941027f | 432 | |
e941027f | 433 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 434 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 435 | #endif |
ce97a097 | 436 | /* determine the channel & change to that context */ |
65f76a82 JS |
437 | save_xir = readb(base_addr + (CyRIR << index)); |
438 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
439 | info = &cinfo->ports[channel + chip * 4]; |
440 | save_car = readb(base_addr + (CyCAR << index)); | |
441 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
442 | ||
d13549f8 | 443 | tty = tty_port_tty_get(&info->port); |
ce97a097 | 444 | /* if there is nowhere to put the data, discard it */ |
d13549f8 | 445 | if (tty == NULL) { |
65f76a82 JS |
446 | if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == |
447 | CyIVRRxEx) { /* exception */ | |
ce97a097 JS |
448 | data = readb(base_addr + (CyRDSR << index)); |
449 | } else { /* normal character reception */ | |
450 | char_count = readb(base_addr + (CyRDCR << index)); | |
451 | while (char_count--) | |
db05c3b1 | 452 | data = readb(base_addr + (CyRDSR << index)); |
ce97a097 JS |
453 | } |
454 | goto end; | |
455 | } | |
456 | /* there is an open port for this data */ | |
65f76a82 JS |
457 | if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == |
458 | CyIVRRxEx) { /* exception */ | |
ce97a097 JS |
459 | data = readb(base_addr + (CyRDSR << index)); |
460 | ||
461 | /* For statistics only */ | |
462 | if (data & CyBREAK) | |
463 | info->icount.brk++; | |
464 | else if (data & CyFRAME) | |
465 | info->icount.frame++; | |
466 | else if (data & CyPARITY) | |
467 | info->icount.parity++; | |
468 | else if (data & CyOVERRUN) | |
469 | info->icount.overrun++; | |
470 | ||
471 | if (data & info->ignore_status_mask) { | |
472 | info->icount.rx++; | |
d13549f8 | 473 | tty_kref_put(tty); |
ce97a097 JS |
474 | return; |
475 | } | |
476 | if (tty_buffer_request_room(tty, 1)) { | |
477 | if (data & info->read_status_mask) { | |
478 | if (data & CyBREAK) { | |
479 | tty_insert_flip_char(tty, | |
480 | readb(base_addr + (CyRDSR << | |
481 | index)), TTY_BREAK); | |
482 | info->icount.rx++; | |
77451e53 | 483 | if (info->port.flags & ASYNC_SAK) |
ce97a097 JS |
484 | do_SAK(tty); |
485 | } else if (data & CyFRAME) { | |
15ed6cc0 | 486 | tty_insert_flip_char(tty, |
ce97a097 JS |
487 | readb(base_addr + (CyRDSR << |
488 | index)), TTY_FRAME); | |
489 | info->icount.rx++; | |
490 | info->idle_stats.frame_errs++; | |
491 | } else if (data & CyPARITY) { | |
492 | /* Pieces of seven... */ | |
493 | tty_insert_flip_char(tty, | |
494 | readb(base_addr + (CyRDSR << | |
495 | index)), TTY_PARITY); | |
496 | info->icount.rx++; | |
497 | info->idle_stats.parity_errs++; | |
498 | } else if (data & CyOVERRUN) { | |
499 | tty_insert_flip_char(tty, 0, | |
500 | TTY_OVERRUN); | |
501 | info->icount.rx++; | |
502 | /* If the flip buffer itself is | |
503 | overflowing, we still lose | |
504 | the next incoming character. | |
505 | */ | |
506 | tty_insert_flip_char(tty, | |
507 | readb(base_addr + (CyRDSR << | |
508 | index)), TTY_FRAME); | |
02f1175c | 509 | info->icount.rx++; |
02f1175c | 510 | info->idle_stats.overruns++; |
ce97a097 JS |
511 | /* These two conditions may imply */ |
512 | /* a normal read should be done. */ | |
513 | /* } else if(data & CyTIMEOUT) { */ | |
514 | /* } else if(data & CySPECHAR) { */ | |
515 | } else { | |
516 | tty_insert_flip_char(tty, 0, | |
517 | TTY_NORMAL); | |
518 | info->icount.rx++; | |
02f1175c | 519 | } |
ce97a097 JS |
520 | } else { |
521 | tty_insert_flip_char(tty, 0, TTY_NORMAL); | |
522 | info->icount.rx++; | |
523 | } | |
524 | } else { | |
525 | /* there was a software buffer overrun and nothing | |
526 | * could be done about it!!! */ | |
527 | info->icount.buf_overrun++; | |
528 | info->idle_stats.overruns++; | |
529 | } | |
530 | } else { /* normal character reception */ | |
531 | /* load # chars available from the chip */ | |
532 | char_count = readb(base_addr + (CyRDCR << index)); | |
e941027f JS |
533 | |
534 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
535 | ++info->mon.int_count; |
536 | info->mon.char_count += char_count; | |
537 | if (char_count > info->mon.char_max) | |
538 | info->mon.char_max = char_count; | |
539 | info->mon.char_last = char_count; | |
e941027f | 540 | #endif |
ce97a097 JS |
541 | len = tty_buffer_request_room(tty, char_count); |
542 | while (len--) { | |
543 | data = readb(base_addr + (CyRDSR << index)); | |
544 | tty_insert_flip_char(tty, data, TTY_NORMAL); | |
545 | info->idle_stats.recv_bytes++; | |
546 | info->icount.rx++; | |
e941027f | 547 | #ifdef CY_16Y_HACK |
ce97a097 | 548 | udelay(10L); |
e941027f | 549 | #endif |
e941027f | 550 | } |
ce97a097 | 551 | info->idle_stats.recv_idle = jiffies; |
e941027f | 552 | } |
ce97a097 | 553 | tty_schedule_flip(tty); |
d13549f8 | 554 | tty_kref_put(tty); |
ce97a097 JS |
555 | end: |
556 | /* end of service */ | |
557 | cy_writeb(base_addr + (CyRIR << index), save_xir & 0x3f); | |
558 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
ce97a097 | 559 | } |
e941027f | 560 | |
65f76a82 | 561 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
562 | void __iomem *base_addr) |
563 | { | |
564 | struct cyclades_port *info; | |
d13549f8 | 565 | struct tty_struct *tty; |
65f76a82 JS |
566 | int char_count, index = cinfo->bus_index; |
567 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
568 | |
569 | /* Since we only get here when the transmit buffer | |
570 | is empty, we know we can always stuff a dozen | |
571 | characters. */ | |
e941027f | 572 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 573 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
574 | #endif |
575 | ||
ce97a097 | 576 | /* determine the channel & change to that context */ |
65f76a82 JS |
577 | save_xir = readb(base_addr + (CyTIR << index)); |
578 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
579 | save_car = readb(base_addr + (CyCAR << index)); |
580 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
581 | ||
582 | /* validate the port# (as configured and open) */ | |
583 | if (channel + chip * 4 >= cinfo->nports) { | |
584 | cy_writeb(base_addr + (CySRER << index), | |
585 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); | |
586 | goto end; | |
587 | } | |
588 | info = &cinfo->ports[channel + chip * 4]; | |
d13549f8 JS |
589 | tty = tty_port_tty_get(&info->port); |
590 | if (tty == NULL) { | |
ce97a097 JS |
591 | cy_writeb(base_addr + (CySRER << index), |
592 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); | |
593 | goto end; | |
594 | } | |
02f1175c | 595 | |
ce97a097 JS |
596 | /* load the on-chip space for outbound data */ |
597 | char_count = info->xmit_fifo_size; | |
02f1175c | 598 | |
ce97a097 JS |
599 | if (info->x_char) { /* send special char */ |
600 | outch = info->x_char; | |
601 | cy_writeb(base_addr + (CyTDR << index), outch); | |
602 | char_count--; | |
603 | info->icount.tx++; | |
604 | info->x_char = 0; | |
605 | } | |
02f1175c | 606 | |
ce97a097 JS |
607 | if (info->breakon || info->breakoff) { |
608 | if (info->breakon) { | |
609 | cy_writeb(base_addr + (CyTDR << index), 0); | |
610 | cy_writeb(base_addr + (CyTDR << index), 0x81); | |
611 | info->breakon = 0; | |
612 | char_count -= 2; | |
e941027f | 613 | } |
ce97a097 JS |
614 | if (info->breakoff) { |
615 | cy_writeb(base_addr + (CyTDR << index), 0); | |
616 | cy_writeb(base_addr + (CyTDR << index), 0x83); | |
617 | info->breakoff = 0; | |
618 | char_count -= 2; | |
e941027f | 619 | } |
ce97a097 | 620 | } |
02f1175c | 621 | |
ce97a097 JS |
622 | while (char_count-- > 0) { |
623 | if (!info->xmit_cnt) { | |
624 | if (readb(base_addr + (CySRER << index)) & CyTxMpty) { | |
625 | cy_writeb(base_addr + (CySRER << index), | |
626 | readb(base_addr + (CySRER << index)) & | |
02f1175c | 627 | ~CyTxMpty); |
ce97a097 JS |
628 | } else { |
629 | cy_writeb(base_addr + (CySRER << index), | |
630 | (readb(base_addr + (CySRER << index)) & | |
02f1175c | 631 | ~CyTxRdy) | CyTxMpty); |
02f1175c | 632 | } |
ce97a097 JS |
633 | goto done; |
634 | } | |
77451e53 | 635 | if (info->port.xmit_buf == NULL) { |
ce97a097 JS |
636 | cy_writeb(base_addr + (CySRER << index), |
637 | readb(base_addr + (CySRER << index)) & | |
02f1175c | 638 | ~CyTxRdy); |
ce97a097 JS |
639 | goto done; |
640 | } | |
d13549f8 | 641 | if (tty->stopped || tty->hw_stopped) { |
ce97a097 JS |
642 | cy_writeb(base_addr + (CySRER << index), |
643 | readb(base_addr + (CySRER << index)) & | |
02f1175c | 644 | ~CyTxRdy); |
ce97a097 JS |
645 | goto done; |
646 | } | |
647 | /* Because the Embedded Transmit Commands have been enabled, | |
648 | * we must check to see if the escape character, NULL, is being | |
649 | * sent. If it is, we must ensure that there is room for it to | |
650 | * be doubled in the output stream. Therefore we no longer | |
651 | * advance the pointer when the character is fetched, but | |
652 | * rather wait until after the check for a NULL output | |
653 | * character. This is necessary because there may not be room | |
654 | * for the two chars needed to send a NULL.) | |
655 | */ | |
77451e53 | 656 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
657 | if (outch) { |
658 | info->xmit_cnt--; | |
659 | info->xmit_tail = (info->xmit_tail + 1) & | |
660 | (SERIAL_XMIT_SIZE - 1); | |
661 | cy_writeb(base_addr + (CyTDR << index), outch); | |
662 | info->icount.tx++; | |
663 | } else { | |
664 | if (char_count > 1) { | |
02f1175c JS |
665 | info->xmit_cnt--; |
666 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 667 | (SERIAL_XMIT_SIZE - 1); |
02f1175c | 668 | cy_writeb(base_addr + (CyTDR << index), outch); |
ce97a097 | 669 | cy_writeb(base_addr + (CyTDR << index), 0); |
02f1175c | 670 | info->icount.tx++; |
ce97a097 | 671 | char_count--; |
02f1175c | 672 | } |
e941027f | 673 | } |
e941027f JS |
674 | } |
675 | ||
ce97a097 | 676 | done: |
d13549f8 JS |
677 | tty_wakeup(tty); |
678 | tty_kref_put(tty); | |
ce97a097 JS |
679 | end: |
680 | /* end of service */ | |
681 | cy_writeb(base_addr + (CyTIR << index), save_xir & 0x3f); | |
682 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
ce97a097 | 683 | } |
02f1175c | 684 | |
ce97a097 JS |
685 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
686 | void __iomem *base_addr) | |
687 | { | |
688 | struct cyclades_port *info; | |
d13549f8 | 689 | struct tty_struct *tty; |
65f76a82 JS |
690 | int index = cinfo->bus_index; |
691 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
692 | |
693 | /* determine the channel & change to that context */ | |
65f76a82 JS |
694 | save_xir = readb(base_addr + (CyMIR << index)); |
695 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
696 | info = &cinfo->ports[channel + chip * 4]; |
697 | save_car = readb(base_addr + (CyCAR << index)); | |
698 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
699 | ||
700 | mdm_change = readb(base_addr + (CyMISR << index)); | |
701 | mdm_status = readb(base_addr + (CyMSVR1 << index)); | |
702 | ||
d13549f8 JS |
703 | tty = tty_port_tty_get(&info->port); |
704 | if (!tty) | |
ce97a097 JS |
705 | goto end; |
706 | ||
707 | if (mdm_change & CyANY_DELTA) { | |
708 | /* For statistics only */ | |
709 | if (mdm_change & CyDCD) | |
710 | info->icount.dcd++; | |
711 | if (mdm_change & CyCTS) | |
712 | info->icount.cts++; | |
713 | if (mdm_change & CyDSR) | |
714 | info->icount.dsr++; | |
715 | if (mdm_change & CyRI) | |
716 | info->icount.rng++; | |
717 | ||
718 | wake_up_interruptible(&info->delta_msr_wait); | |
719 | } | |
720 | ||
77451e53 | 721 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
174e6fe0 JS |
722 | if (mdm_status & CyDCD) |
723 | wake_up_interruptible(&info->port.open_wait); | |
724 | else | |
d13549f8 | 725 | tty_hangup(tty); |
ce97a097 | 726 | } |
77451e53 | 727 | if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { |
d13549f8 | 728 | if (tty->hw_stopped) { |
ce97a097 JS |
729 | if (mdm_status & CyCTS) { |
730 | /* cy_start isn't used | |
731 | because... !!! */ | |
d13549f8 | 732 | tty->hw_stopped = 0; |
ce97a097 JS |
733 | cy_writeb(base_addr + (CySRER << index), |
734 | readb(base_addr + (CySRER << index)) | | |
735 | CyTxRdy); | |
d13549f8 | 736 | tty_wakeup(tty); |
02f1175c | 737 | } |
ce97a097 JS |
738 | } else { |
739 | if (!(mdm_status & CyCTS)) { | |
740 | /* cy_stop isn't used | |
741 | because ... !!! */ | |
d13549f8 | 742 | tty->hw_stopped = 1; |
ce97a097 JS |
743 | cy_writeb(base_addr + (CySRER << index), |
744 | readb(base_addr + (CySRER << index)) & | |
745 | ~CyTxRdy); | |
02f1175c | 746 | } |
e941027f | 747 | } |
e941027f | 748 | } |
ce97a097 JS |
749 | /* if (mdm_change & CyDSR) { |
750 | } | |
751 | if (mdm_change & CyRI) { | |
752 | }*/ | |
d13549f8 | 753 | tty_kref_put(tty); |
ce97a097 JS |
754 | end: |
755 | /* end of service */ | |
756 | cy_writeb(base_addr + (CyMIR << index), save_xir & 0x3f); | |
757 | cy_writeb(base_addr + (CyCAR << index), save_car); | |
e941027f JS |
758 | } |
759 | ||
1da177e4 LT |
760 | /* The real interrupt service routine is called |
761 | whenever the card wants its hand held--chars | |
762 | received, out buffer empty, modem change, etc. | |
763 | */ | |
02f1175c | 764 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 765 | { |
02f1175c | 766 | int status; |
f7429034 | 767 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 768 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 769 | unsigned int chip, too_many, had_work; |
02f1175c | 770 | int index; |
02f1175c | 771 | |
f7429034 | 772 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 773 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
774 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
775 | irq); | |
1da177e4 | 776 | #endif |
02f1175c JS |
777 | return IRQ_NONE; /* spurious interrupt */ |
778 | } | |
779 | ||
780 | card_base_addr = cinfo->base_addr; | |
781 | index = cinfo->bus_index; | |
782 | ||
f1e83c6c JS |
783 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
784 | if (unlikely(card_base_addr == NULL)) | |
785 | return IRQ_HANDLED; | |
786 | ||
02f1175c JS |
787 | /* This loop checks all chips in the card. Make a note whenever |
788 | _any_ chip had some work to do, as this is considered an | |
789 | indication that there will be more to do. Only when no chip | |
790 | has any work does this outermost loop exit. | |
791 | */ | |
792 | do { | |
793 | had_work = 0; | |
794 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
795 | base_addr = cinfo->base_addr + | |
796 | (cy_chip_offset[chip] << index); | |
797 | too_many = 0; | |
db05c3b1 | 798 | while ((status = readb(base_addr + |
02f1175c JS |
799 | (CySVRR << index))) != 0x00) { |
800 | had_work++; | |
801 | /* The purpose of the following test is to ensure that | |
802 | no chip can monopolize the driver. This forces the | |
803 | chips to be checked in a round-robin fashion (after | |
804 | draining each of a bunch (1000) of characters). | |
805 | */ | |
ce97a097 | 806 | if (1000 < too_many++) |
02f1175c | 807 | break; |
1c0a387c | 808 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
809 | if (status & CySRReceive) /* rx intr */ |
810 | cyy_chip_rx(cinfo, chip, base_addr); | |
811 | if (status & CySRTransmit) /* tx intr */ | |
812 | cyy_chip_tx(cinfo, chip, base_addr); | |
813 | if (status & CySRModem) /* modem intr */ | |
814 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 815 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
816 | } |
817 | } | |
818 | } while (had_work); | |
819 | ||
820 | /* clear interrupts */ | |
821 | spin_lock(&cinfo->card_lock); | |
822 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
823 | /* Cy_ClrIntr is 0x1800 */ | |
824 | spin_unlock(&cinfo->card_lock); | |
825 | return IRQ_HANDLED; | |
826 | } /* cyy_interrupt */ | |
1da177e4 | 827 | |
4d768200 JS |
828 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
829 | unsigned int clear) | |
830 | { | |
831 | struct cyclades_card *card = info->card; | |
832 | void __iomem *base_addr; | |
833 | int chip, channel, index; | |
834 | ||
835 | channel = info->line - card->first_line; | |
836 | chip = channel >> 2; | |
837 | channel &= 0x03; | |
838 | index = card->bus_index; | |
839 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
840 | ||
841 | if (set & TIOCM_RTS) { | |
842 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
843 | if (info->rtsdtr_inv) { | |
844 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); | |
845 | } else { | |
846 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); | |
847 | } | |
848 | } | |
849 | if (clear & TIOCM_RTS) { | |
850 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
851 | if (info->rtsdtr_inv) { | |
852 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); | |
853 | } else { | |
854 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); | |
855 | } | |
856 | } | |
857 | if (set & TIOCM_DTR) { | |
858 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
859 | if (info->rtsdtr_inv) { | |
860 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); | |
861 | } else { | |
862 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); | |
863 | } | |
864 | #ifdef CY_DEBUG_DTR | |
865 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
866 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
867 | readb(base_addr + (CyMSVR1 << index)), | |
868 | readb(base_addr + (CyMSVR2 << index))); | |
869 | #endif | |
870 | } | |
871 | if (clear & TIOCM_DTR) { | |
872 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
873 | if (info->rtsdtr_inv) { | |
874 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); | |
875 | } else { | |
876 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); | |
877 | } | |
878 | ||
879 | #ifdef CY_DEBUG_DTR | |
880 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
881 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
882 | readb(base_addr + (CyMSVR1 << index)), | |
883 | readb(base_addr + (CyMSVR2 << index))); | |
884 | #endif | |
885 | } | |
886 | } | |
887 | ||
1da177e4 LT |
888 | /***********************************************************/ |
889 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 890 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
891 | /***********************************************************/ |
892 | ||
893 | static int | |
02f1175c | 894 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 895 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 896 | { |
f0eefdc3 | 897 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
898 | unsigned long loc_doorbell; |
899 | ||
97e87f8e | 900 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
901 | if (loc_doorbell) { |
902 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
903 | *channel = readl(&board_ctrl->fwcmd_channel); |
904 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 905 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
906 | return 1; |
907 | } | |
908 | return 0; | |
909 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
910 | |
911 | static int | |
02f1175c | 912 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 913 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 914 | { |
f0eefdc3 | 915 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 916 | __u32 __iomem *pci_doorbell; |
65f76a82 | 917 | unsigned int index; |
02f1175c | 918 | |
2693f485 | 919 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 920 | return -1; |
15ed6cc0 | 921 | |
02f1175c | 922 | index = 0; |
97e87f8e | 923 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 924 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 925 | if (index++ == 1000) |
db05c3b1 | 926 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
927 | udelay(50L); |
928 | } | |
929 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
930 | cy_writel(&board_ctrl->hcmd_param, param); | |
931 | cy_writel(pci_doorbell, (long)cmd); | |
932 | ||
096dcfce | 933 | return 0; |
02f1175c | 934 | } /* cyz_issue_cmd */ |
1da177e4 | 935 | |
f0eefdc3 | 936 | static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 937 | { |
f0eefdc3 | 938 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 939 | struct cyclades_card *cinfo = info->card; |
65f76a82 | 940 | unsigned int char_count; |
02f1175c | 941 | int len; |
1da177e4 | 942 | #ifdef BLOCKMOVE |
ce71b0ff | 943 | unsigned char *buf; |
1da177e4 | 944 | #else |
02f1175c | 945 | char data; |
1da177e4 | 946 | #endif |
ad39c300 | 947 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 948 | |
db05c3b1 JS |
949 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
950 | rx_put = readl(&buf_ctrl->rx_put); | |
951 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
952 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
953 | if (rx_put >= rx_get) |
954 | char_count = rx_put - rx_get; | |
955 | else | |
956 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 957 | |
02f1175c | 958 | if (char_count) { |
1da177e4 | 959 | #ifdef CY_ENABLE_MONITORING |
02f1175c JS |
960 | info->mon.int_count++; |
961 | info->mon.char_count += char_count; | |
962 | if (char_count > info->mon.char_max) | |
963 | info->mon.char_max = char_count; | |
964 | info->mon.char_last = char_count; | |
1da177e4 | 965 | #endif |
f7429034 | 966 | if (tty == NULL) { |
02f1175c JS |
967 | /* flush received characters */ |
968 | new_rx_get = (new_rx_get + char_count) & | |
969 | (rx_bufsize - 1); | |
970 | info->rflush_count++; | |
971 | } else { | |
1da177e4 | 972 | #ifdef BLOCKMOVE |
02f1175c JS |
973 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
974 | for performance, but because of buffer boundaries, there | |
975 | may be several steps to the operation */ | |
ce71b0ff JS |
976 | while (1) { |
977 | len = tty_prepare_flip_string(tty, &buf, | |
978 | char_count); | |
979 | if (!len) | |
980 | break; | |
981 | ||
982 | len = min_t(unsigned int, min(len, char_count), | |
983 | rx_bufsize - new_rx_get); | |
984 | ||
985 | memcpy_fromio(buf, cinfo->base_addr + | |
986 | rx_bufaddr + new_rx_get, len); | |
987 | ||
988 | new_rx_get = (new_rx_get + len) & | |
02f1175c | 989 | (rx_bufsize - 1); |
ce71b0ff JS |
990 | char_count -= len; |
991 | info->icount.rx += len; | |
992 | info->idle_stats.recv_bytes += len; | |
02f1175c | 993 | } |
1da177e4 | 994 | #else |
02f1175c JS |
995 | len = tty_buffer_request_room(tty, char_count); |
996 | while (len--) { | |
db05c3b1 | 997 | data = readb(cinfo->base_addr + rx_bufaddr + |
02f1175c | 998 | new_rx_get); |
15ed6cc0 AC |
999 | new_rx_get = (new_rx_get + 1) & |
1000 | (rx_bufsize - 1); | |
02f1175c JS |
1001 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
1002 | info->idle_stats.recv_bytes++; | |
1003 | info->icount.rx++; | |
1004 | } | |
1da177e4 LT |
1005 | #endif |
1006 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1007 | /* Recalculate the number of chars in the RX buffer and issue |
1008 | a cmd in case it's higher than the RX high water mark */ | |
db05c3b1 | 1009 | rx_put = readl(&buf_ctrl->rx_put); |
02f1175c JS |
1010 | if (rx_put >= rx_get) |
1011 | char_count = rx_put - rx_get; | |
1012 | else | |
1013 | char_count = rx_put - rx_get + rx_bufsize; | |
65f76a82 | 1014 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
ebafeeff JS |
1015 | !timer_pending(&cyz_rx_full_timer[ |
1016 | info->line])) | |
1017 | mod_timer(&cyz_rx_full_timer[info->line], | |
1018 | jiffies + 1); | |
1da177e4 | 1019 | #endif |
02f1175c JS |
1020 | info->idle_stats.recv_idle = jiffies; |
1021 | tty_schedule_flip(tty); | |
1022 | } | |
1023 | /* Update rx_get */ | |
1024 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 | 1025 | } |
1da177e4 LT |
1026 | } |
1027 | ||
f0eefdc3 | 1028 | static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1029 | { |
f0eefdc3 | 1030 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1031 | struct cyclades_card *cinfo = info->card; |
65f76a82 JS |
1032 | u8 data; |
1033 | unsigned int char_count; | |
1da177e4 | 1034 | #ifdef BLOCKMOVE |
02f1175c | 1035 | int small_count; |
1da177e4 | 1036 | #endif |
ad39c300 | 1037 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1038 | |
02f1175c JS |
1039 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1040 | return; | |
1da177e4 | 1041 | |
db05c3b1 JS |
1042 | tx_get = readl(&buf_ctrl->tx_get); |
1043 | tx_put = readl(&buf_ctrl->tx_put); | |
1044 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1045 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1046 | if (tx_put >= tx_get) |
1047 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1048 | else | |
1049 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1050 | |
02f1175c | 1051 | if (char_count) { |
1da177e4 | 1052 | |
f7429034 | 1053 | if (tty == NULL) |
02f1175c | 1054 | goto ztxdone; |
1da177e4 | 1055 | |
02f1175c JS |
1056 | if (info->x_char) { /* send special char */ |
1057 | data = info->x_char; | |
1da177e4 | 1058 | |
02f1175c JS |
1059 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1060 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1061 | info->x_char = 0; | |
1062 | char_count--; | |
1063 | info->icount.tx++; | |
02f1175c | 1064 | } |
1da177e4 | 1065 | #ifdef BLOCKMOVE |
02f1175c JS |
1066 | while (0 < (small_count = min_t(unsigned int, |
1067 | tx_bufsize - tx_put, min_t(unsigned int, | |
1068 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1069 | min_t(unsigned int, info->xmit_cnt, | |
1070 | char_count))))) { | |
1071 | ||
1072 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + | |
1073 | tx_put), | |
77451e53 | 1074 | &info->port.xmit_buf[info->xmit_tail], |
02f1175c JS |
1075 | small_count); |
1076 | ||
1077 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1078 | char_count -= small_count; | |
1079 | info->icount.tx += small_count; | |
1080 | info->xmit_cnt -= small_count; | |
1081 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1082 | (SERIAL_XMIT_SIZE - 1); | |
02f1175c | 1083 | } |
1da177e4 | 1084 | #else |
02f1175c | 1085 | while (info->xmit_cnt && char_count) { |
77451e53 | 1086 | data = info->port.xmit_buf[info->xmit_tail]; |
02f1175c JS |
1087 | info->xmit_cnt--; |
1088 | info->xmit_tail = (info->xmit_tail + 1) & | |
1089 | (SERIAL_XMIT_SIZE - 1); | |
1090 | ||
1091 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1092 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1093 | char_count--; | |
1094 | info->icount.tx++; | |
02f1175c | 1095 | } |
1da177e4 | 1096 | #endif |
ebafeeff | 1097 | tty_wakeup(tty); |
7fa57a0c | 1098 | ztxdone: |
02f1175c JS |
1099 | /* Update tx_put */ |
1100 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 | 1101 | } |
1da177e4 LT |
1102 | } |
1103 | ||
02f1175c | 1104 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1105 | { |
f0eefdc3 | 1106 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
1107 | struct tty_struct *tty; |
1108 | struct cyclades_port *info; | |
101b8159 | 1109 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1110 | __u8 cmd; |
02f1175c JS |
1111 | int special_count; |
1112 | int delta_count; | |
1113 | ||
db05c3b1 | 1114 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1115 | |
1116 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1117 | special_count = 0; | |
1118 | delta_count = 0; | |
dd025c0c | 1119 | info = &cinfo->ports[channel]; |
d13549f8 | 1120 | tty = tty_port_tty_get(&info->port); |
15ed6cc0 | 1121 | if (tty == NULL) |
02f1175c | 1122 | continue; |
f7429034 | 1123 | |
02f1175c JS |
1124 | switch (cmd) { |
1125 | case C_CM_PR_ERROR: | |
1126 | tty_insert_flip_char(tty, 0, TTY_PARITY); | |
1127 | info->icount.rx++; | |
1128 | special_count++; | |
1129 | break; | |
1130 | case C_CM_FR_ERROR: | |
1131 | tty_insert_flip_char(tty, 0, TTY_FRAME); | |
1132 | info->icount.rx++; | |
1133 | special_count++; | |
1134 | break; | |
1135 | case C_CM_RXBRK: | |
1136 | tty_insert_flip_char(tty, 0, TTY_BREAK); | |
1137 | info->icount.rx++; | |
1138 | special_count++; | |
1139 | break; | |
1140 | case C_CM_MDCD: | |
1141 | info->icount.dcd++; | |
1142 | delta_count++; | |
77451e53 | 1143 | if (info->port.flags & ASYNC_CHECK_CD) { |
f0eefdc3 JS |
1144 | u32 dcd = fw_ver > 241 ? param : |
1145 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1146 | if (dcd & C_RS_DCD) |
77451e53 | 1147 | wake_up_interruptible(&info->port.open_wait); |
174e6fe0 | 1148 | else |
d13549f8 | 1149 | tty_hangup(tty); |
02f1175c JS |
1150 | } |
1151 | break; | |
1152 | case C_CM_MCTS: | |
1153 | info->icount.cts++; | |
1154 | delta_count++; | |
1155 | break; | |
1156 | case C_CM_MRI: | |
1157 | info->icount.rng++; | |
1158 | delta_count++; | |
1159 | break; | |
1160 | case C_CM_MDSR: | |
1161 | info->icount.dsr++; | |
1162 | delta_count++; | |
1163 | break; | |
1da177e4 | 1164 | #ifdef Z_WAKE |
02f1175c | 1165 | case C_CM_IOCTLW: |
ebafeeff | 1166 | complete(&info->shutdown_wait); |
02f1175c | 1167 | break; |
1da177e4 LT |
1168 | #endif |
1169 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1170 | case C_CM_RXHIWM: |
1171 | case C_CM_RXNNDT: | |
1172 | case C_CM_INTBACK2: | |
1173 | /* Reception Interrupt */ | |
1da177e4 | 1174 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1175 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1176 | "port %ld\n", info->card, channel); | |
1da177e4 | 1177 | #endif |
f0eefdc3 | 1178 | cyz_handle_rx(info, tty); |
02f1175c JS |
1179 | break; |
1180 | case C_CM_TXBEMPTY: | |
1181 | case C_CM_TXLOWWM: | |
1182 | case C_CM_INTBACK: | |
1183 | /* Transmission Interrupt */ | |
1da177e4 | 1184 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1185 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1186 | "port %ld\n", info->card, channel); | |
1da177e4 | 1187 | #endif |
f0eefdc3 | 1188 | cyz_handle_tx(info, tty); |
02f1175c JS |
1189 | break; |
1190 | #endif /* CONFIG_CYZ_INTR */ | |
1191 | case C_CM_FATAL: | |
1192 | /* should do something with this !!! */ | |
1193 | break; | |
1194 | default: | |
1195 | break; | |
1196 | } | |
1197 | if (delta_count) | |
ebafeeff | 1198 | wake_up_interruptible(&info->delta_msr_wait); |
02f1175c JS |
1199 | if (special_count) |
1200 | tty_schedule_flip(tty); | |
d13549f8 | 1201 | tty_kref_put(tty); |
1da177e4 | 1202 | } |
1da177e4 LT |
1203 | } |
1204 | ||
1205 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1206 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1207 | { |
f7429034 | 1208 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1209 | |
2693f485 | 1210 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1211 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1212 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1213 | "(IRQ%d).\n", irq); | |
1da177e4 | 1214 | #endif |
02f1175c JS |
1215 | return IRQ_NONE; |
1216 | } | |
1da177e4 | 1217 | |
02f1175c JS |
1218 | /* Handle the interrupts */ |
1219 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1220 | |
02f1175c JS |
1221 | return IRQ_HANDLED; |
1222 | } /* cyz_interrupt */ | |
1da177e4 | 1223 | |
02f1175c | 1224 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1225 | { |
02f1175c | 1226 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1227 | struct cyclades_card *card = info->card; |
02f1175c | 1228 | int retval; |
875b206b | 1229 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1230 | unsigned long flags; |
1231 | ||
9fa1b3b1 | 1232 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1233 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1234 | if (retval != 0) { |
21719191 | 1235 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1236 | info->line, retval); |
1237 | } | |
9fa1b3b1 | 1238 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1239 | } |
1240 | ||
02f1175c | 1241 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1242 | |
02f1175c | 1243 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1244 | { |
02f1175c JS |
1245 | struct cyclades_card *cinfo; |
1246 | struct cyclades_port *info; | |
b7050906 | 1247 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1248 | unsigned int port, card; |
1da177e4 | 1249 | |
02f1175c JS |
1250 | for (card = 0; card < NR_CARDS; card++) { |
1251 | cinfo = &cy_card[card]; | |
1252 | ||
2693f485 | 1253 | if (!cy_is_Z(cinfo)) |
02f1175c | 1254 | continue; |
2693f485 | 1255 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1256 | continue; |
1257 | ||
1da177e4 | 1258 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1259 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1260 | cinfo->intr_enabled = 1; |
1261 | continue; | |
1262 | } | |
1da177e4 | 1263 | |
02f1175c | 1264 | cyz_handle_cmd(cinfo); |
1da177e4 | 1265 | |
02f1175c | 1266 | for (port = 0; port < cinfo->nports; port++) { |
d13549f8 JS |
1267 | struct tty_struct *tty; |
1268 | ||
dd025c0c | 1269 | info = &cinfo->ports[port]; |
d13549f8 JS |
1270 | tty = tty_port_tty_get(&info->port); |
1271 | /* OK to pass NULL to the handle functions below. | |
1272 | They need to drop the data in that case. */ | |
1273 | ||
02f1175c | 1274 | if (!info->throttle) |
f0eefdc3 JS |
1275 | cyz_handle_rx(info, tty); |
1276 | cyz_handle_tx(info, tty); | |
d13549f8 | 1277 | tty_kref_put(tty); |
02f1175c JS |
1278 | } |
1279 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1280 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1281 | } |
b7050906 | 1282 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1283 | } /* cyz_poll */ |
1da177e4 | 1284 | |
02f1175c | 1285 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1286 | |
1287 | /********** End of block of Cyclades-Z specific code *********/ | |
1288 | /***********************************************************/ | |
1289 | ||
1da177e4 LT |
1290 | /* This is called whenever a port becomes active; |
1291 | interrupts are enabled and DTR & RTS are turned on. | |
1292 | */ | |
d13549f8 | 1293 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1294 | { |
875b206b | 1295 | struct cyclades_card *card; |
02f1175c JS |
1296 | unsigned long flags; |
1297 | int retval = 0; | |
1298 | void __iomem *base_addr; | |
cc7fdf49 | 1299 | int channel; |
02f1175c | 1300 | unsigned long page; |
1da177e4 | 1301 | |
02f1175c | 1302 | card = info->card; |
875b206b | 1303 | channel = info->line - card->first_line; |
1da177e4 | 1304 | |
02f1175c JS |
1305 | page = get_zeroed_page(GFP_KERNEL); |
1306 | if (!page) | |
1307 | return -ENOMEM; | |
1da177e4 | 1308 | |
9fa1b3b1 | 1309 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1310 | |
cc7fdf49 | 1311 | if (info->port.flags & ASYNC_INITIALIZED) |
02f1175c | 1312 | goto errout; |
1da177e4 | 1313 | |
02f1175c | 1314 | if (!info->type) { |
d13549f8 | 1315 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1316 | goto errout; |
1317 | } | |
1da177e4 | 1318 | |
77451e53 | 1319 | if (info->port.xmit_buf) |
02f1175c JS |
1320 | free_page(page); |
1321 | else | |
77451e53 | 1322 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1323 | |
9fa1b3b1 | 1324 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1325 | |
d13549f8 | 1326 | cy_set_line_char(info, tty); |
1da177e4 | 1327 | |
2693f485 | 1328 | if (!cy_is_Z(card)) { |
cc7fdf49 JS |
1329 | int chip = channel >> 2; |
1330 | int index = card->bus_index; | |
02f1175c | 1331 | channel &= 0x03; |
875b206b | 1332 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 LT |
1333 | |
1334 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
1335 | printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " |
1336 | "base_addr %p\n", | |
1337 | card, chip, channel, base_addr); | |
1da177e4 | 1338 | #endif |
9fa1b3b1 | 1339 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1340 | |
02f1175c | 1341 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
1da177e4 | 1342 | |
02f1175c JS |
1343 | cy_writeb(base_addr + (CyRTPR << index), |
1344 | (info->default_timeout ? info->default_timeout : 0x02)); | |
1345 | /* 10ms rx timeout */ | |
1da177e4 | 1346 | |
02f1175c JS |
1347 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
1348 | index); | |
1da177e4 | 1349 | |
4d768200 | 1350 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1351 | |
02f1175c | 1352 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 1353 | readb(base_addr + (CySRER << index)) | CyRxData); |
02f1175c | 1354 | } else { |
f0eefdc3 | 1355 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1356 | |
2693f485 | 1357 | if (!cyz_is_loaded(card)) |
02f1175c | 1358 | return -ENODEV; |
1da177e4 | 1359 | |
1da177e4 | 1360 | #ifdef CY_DEBUG_OPEN |
21719191 | 1361 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1362 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1363 | #endif |
9fa1b3b1 | 1364 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1365 | |
f0eefdc3 | 1366 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1367 | #ifdef Z_WAKE |
1368 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1369 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1370 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1371 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1372 | #else |
f0eefdc3 | 1373 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1374 | C_IN_IOCTLW | C_IN_MDCD); |
1375 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1376 | #else |
1377 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1378 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1379 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1380 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1381 | #else |
f0eefdc3 | 1382 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1383 | #endif /* CONFIG_CYZ_INTR */ |
1384 | #endif /* Z_WAKE */ | |
1385 | ||
875b206b | 1386 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1387 | if (retval != 0) { |
21719191 JS |
1388 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1389 | "%x\n", info->line, retval); | |
02f1175c | 1390 | } |
1da177e4 | 1391 | |
02f1175c | 1392 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1393 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1394 | if (retval != 0) { |
21719191 JS |
1395 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1396 | "%x\n", info->line, retval); | |
02f1175c | 1397 | } |
1da177e4 | 1398 | |
02f1175c JS |
1399 | /* set timeout !!! */ |
1400 | /* set RTS and DTR !!! */ | |
4d768200 | 1401 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1402 | |
02f1175c | 1403 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1404 | } |
02f1175c | 1405 | |
cc7fdf49 | 1406 | info->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1407 | |
cc7fdf49 JS |
1408 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1409 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1410 | info->breakon = info->breakoff = 0; | |
1411 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1412 | info->idle_stats.in_use = | |
1413 | info->idle_stats.recv_idle = | |
1414 | info->idle_stats.xmit_idle = jiffies; | |
1415 | ||
1416 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1417 | |
1418 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1419 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1420 | #endif |
1421 | return 0; | |
1422 | ||
1423 | errout: | |
9fa1b3b1 | 1424 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1425 | free_page(page); |
1da177e4 | 1426 | return retval; |
02f1175c | 1427 | } /* startup */ |
1da177e4 | 1428 | |
02f1175c | 1429 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1430 | { |
875b206b | 1431 | struct cyclades_card *card; |
02f1175c JS |
1432 | unsigned long flags; |
1433 | void __iomem *base_addr; | |
875b206b | 1434 | int chip, channel, index; |
1da177e4 | 1435 | |
02f1175c | 1436 | card = info->card; |
875b206b | 1437 | channel = info->line - card->first_line; |
2693f485 | 1438 | if (!cy_is_Z(card)) { |
02f1175c JS |
1439 | chip = channel >> 2; |
1440 | channel &= 0x03; | |
875b206b JS |
1441 | index = card->bus_index; |
1442 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 1443 | |
9fa1b3b1 | 1444 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1445 | cy_writeb(base_addr + (CyCAR << index), channel); |
1446 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1447 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 1448 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1449 | } else { |
1da177e4 | 1450 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1451 | int retval; |
1da177e4 | 1452 | |
9fa1b3b1 | 1453 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1454 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1455 | if (retval != 0) { |
21719191 JS |
1456 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1457 | "%x\n", info->line, retval); | |
02f1175c | 1458 | } |
9fa1b3b1 | 1459 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1460 | #else /* CONFIG_CYZ_INTR */ |
1461 | /* Don't have to do anything at this time */ | |
1462 | #endif /* CONFIG_CYZ_INTR */ | |
1463 | } | |
1464 | } /* start_xmit */ | |
1da177e4 LT |
1465 | |
1466 | /* | |
1467 | * This routine shuts down a serial port; interrupts are disabled, | |
1468 | * and DTR is dropped if the hangup on close termio flag is on. | |
1469 | */ | |
d13549f8 | 1470 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1471 | { |
875b206b | 1472 | struct cyclades_card *card; |
02f1175c JS |
1473 | unsigned long flags; |
1474 | void __iomem *base_addr; | |
875b206b | 1475 | int chip, channel, index; |
02f1175c | 1476 | |
77451e53 | 1477 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
02f1175c | 1478 | return; |
02f1175c JS |
1479 | |
1480 | card = info->card; | |
875b206b | 1481 | channel = info->line - card->first_line; |
2693f485 | 1482 | if (!cy_is_Z(card)) { |
02f1175c JS |
1483 | chip = channel >> 2; |
1484 | channel &= 0x03; | |
875b206b JS |
1485 | index = card->bus_index; |
1486 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 LT |
1487 | |
1488 | #ifdef CY_DEBUG_OPEN | |
21719191 JS |
1489 | printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " |
1490 | "channel %d, base_addr %p\n", | |
1491 | card, chip, channel, base_addr); | |
1da177e4 LT |
1492 | #endif |
1493 | ||
9fa1b3b1 | 1494 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1495 | |
1496 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
1497 | wake_up_interruptible(&info->delta_msr_wait); | |
1da177e4 | 1498 | |
77451e53 | 1499 | if (info->port.xmit_buf) { |
02f1175c | 1500 | unsigned char *temp; |
77451e53 AC |
1501 | temp = info->port.xmit_buf; |
1502 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1503 | free_page((unsigned long)temp); |
1504 | } | |
4d768200 JS |
1505 | if (tty->termios->c_cflag & HUPCL) |
1506 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); | |
1507 | ||
02f1175c JS |
1508 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); |
1509 | /* it may be appropriate to clear _XMIT at | |
1510 | some later date (after testing)!!! */ | |
1511 | ||
d13549f8 | 1512 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1513 | info->port.flags &= ~ASYNC_INITIALIZED; |
9fa1b3b1 | 1514 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1515 | } else { |
1da177e4 | 1516 | #ifdef CY_DEBUG_OPEN |
21719191 | 1517 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1518 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1519 | #endif |
1520 | ||
2693f485 | 1521 | if (!cyz_is_loaded(card)) |
02f1175c | 1522 | return; |
1da177e4 | 1523 | |
9fa1b3b1 | 1524 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1525 | |
77451e53 | 1526 | if (info->port.xmit_buf) { |
02f1175c | 1527 | unsigned char *temp; |
77451e53 AC |
1528 | temp = info->port.xmit_buf; |
1529 | info->port.xmit_buf = NULL; | |
02f1175c | 1530 | free_page((unsigned long)temp); |
1da177e4 | 1531 | } |
02f1175c | 1532 | |
4d768200 JS |
1533 | if (tty->termios->c_cflag & HUPCL) |
1534 | tty_port_lower_dtr_rts(&info->port); | |
1da177e4 | 1535 | |
d13549f8 | 1536 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1537 | info->port.flags &= ~ASYNC_INITIALIZED; |
02f1175c | 1538 | |
9fa1b3b1 | 1539 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1540 | } |
1da177e4 LT |
1541 | |
1542 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1543 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1544 | #endif |
02f1175c | 1545 | } /* shutdown */ |
1da177e4 LT |
1546 | |
1547 | /* | |
1548 | * ------------------------------------------------------------ | |
1549 | * cy_open() and friends | |
1550 | * ------------------------------------------------------------ | |
1551 | */ | |
1552 | ||
1da177e4 LT |
1553 | /* |
1554 | * This routine is called whenever a serial port is opened. It | |
1555 | * performs the serial-specific initialization for the tty structure. | |
1556 | */ | |
02f1175c | 1557 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1558 | { |
02f1175c | 1559 | struct cyclades_port *info; |
65f76a82 JS |
1560 | unsigned int i, line; |
1561 | int retval; | |
1da177e4 | 1562 | |
02f1175c | 1563 | line = tty->index; |
15ed6cc0 | 1564 | if (tty->index < 0 || NR_PORTS <= line) |
02f1175c | 1565 | return -ENODEV; |
15ed6cc0 | 1566 | |
dd025c0c JS |
1567 | for (i = 0; i < NR_CARDS; i++) |
1568 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1569 | line >= cy_card[i].first_line) | |
1570 | break; | |
1571 | if (i >= NR_CARDS) | |
1572 | return -ENODEV; | |
1573 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1574 | if (info->line < 0) |
02f1175c | 1575 | return -ENODEV; |
1da177e4 | 1576 | |
02f1175c JS |
1577 | /* If the card's firmware hasn't been loaded, |
1578 | treat it as absent from the system. This | |
1579 | will make the user pay attention. | |
1580 | */ | |
2693f485 | 1581 | if (cy_is_Z(info->card)) { |
875b206b | 1582 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1583 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1584 | ||
2693f485 JS |
1585 | if (!cyz_is_loaded(cinfo)) { |
1586 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1587 | readl(&firm_id->signature) == |
1588 | ZFIRM_HLT) { | |
21719191 JS |
1589 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1590 | "need an external power supply for " | |
1591 | "this number of ports.\nFirmware " | |
1592 | "halted.\n"); | |
02f1175c | 1593 | } else { |
21719191 JS |
1594 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1595 | "yet loaded\n"); | |
02f1175c JS |
1596 | } |
1597 | return -ENODEV; | |
1598 | } | |
1599 | #ifdef CONFIG_CYZ_INTR | |
1600 | else { | |
1601 | /* In case this Z board is operating in interrupt mode, its | |
1602 | interrupts should be enabled as soon as the first open | |
1603 | happens to one of its ports. */ | |
1604 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1605 | u16 intr; |
02f1175c | 1606 | |
02f1175c | 1607 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1608 | intr = readw(&cinfo->ctl_addr.p9060-> |
1609 | intr_ctrl_stat) | 0x0900; | |
1610 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1611 | intr_ctrl_stat, intr); | |
02f1175c JS |
1612 | /* Enable interrupts on the FW */ |
1613 | retval = cyz_issue_cmd(cinfo, 0, | |
1614 | C_CM_IRQ_ENBL, 0L); | |
1615 | if (retval != 0) { | |
21719191 JS |
1616 | printk(KERN_ERR "cyc:IRQ enable retval " |
1617 | "was %x\n", retval); | |
02f1175c | 1618 | } |
02f1175c JS |
1619 | cinfo->intr_enabled = 1; |
1620 | } | |
1da177e4 | 1621 | } |
02f1175c JS |
1622 | #endif /* CONFIG_CYZ_INTR */ |
1623 | /* Make sure this Z port really exists in hardware */ | |
1624 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1625 | return -ENODEV; | |
1da177e4 | 1626 | } |
1da177e4 | 1627 | #ifdef CY_DEBUG_OTHER |
21719191 | 1628 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1629 | #endif |
02f1175c | 1630 | tty->driver_data = info; |
15ed6cc0 | 1631 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1632 | return -ENODEV; |
15ed6cc0 | 1633 | |
1da177e4 | 1634 | #ifdef CY_DEBUG_OPEN |
21719191 | 1635 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1636 | info->port.count); |
1da177e4 | 1637 | #endif |
77451e53 | 1638 | info->port.count++; |
1da177e4 | 1639 | #ifdef CY_DEBUG_COUNT |
21719191 | 1640 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1641 | current->pid, info->port.count); |
1da177e4 | 1642 | #endif |
1da177e4 | 1643 | |
02f1175c JS |
1644 | /* |
1645 | * If the port is the middle of closing, bail out now | |
1646 | */ | |
77451e53 AC |
1647 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
1648 | wait_event_interruptible(info->port.close_wait, | |
1649 | !(info->port.flags & ASYNC_CLOSING)); | |
1650 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; | |
02f1175c | 1651 | } |
1da177e4 | 1652 | |
02f1175c JS |
1653 | /* |
1654 | * Start up serial port | |
1655 | */ | |
d13549f8 | 1656 | retval = cy_startup(info, tty); |
15ed6cc0 | 1657 | if (retval) |
02f1175c | 1658 | return retval; |
1da177e4 | 1659 | |
f0737579 | 1660 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1661 | if (retval) { |
1da177e4 | 1662 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1663 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1664 | "with %d\n", retval); | |
1da177e4 | 1665 | #endif |
02f1175c JS |
1666 | return retval; |
1667 | } | |
1da177e4 | 1668 | |
02f1175c | 1669 | info->throttle = 0; |
d13549f8 | 1670 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1671 | |
02f1175c | 1672 | #ifdef CY_DEBUG_OPEN |
21719191 | 1673 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1674 | #endif |
1675 | return 0; | |
1676 | } /* cy_open */ | |
1da177e4 LT |
1677 | |
1678 | /* | |
1679 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1680 | */ | |
02f1175c | 1681 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1682 | { |
875b206b | 1683 | struct cyclades_card *card; |
cab9bdd1 | 1684 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1685 | void __iomem *base_addr; |
875b206b | 1686 | int chip, channel, index; |
02f1175c JS |
1687 | unsigned long orig_jiffies; |
1688 | int char_time; | |
1689 | ||
1690 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1691 | return; | |
1692 | ||
1693 | if (info->xmit_fifo_size == 0) | |
1694 | return; /* Just in case.... */ | |
1da177e4 | 1695 | |
02f1175c | 1696 | orig_jiffies = jiffies; |
978e595f | 1697 | lock_kernel(); |
02f1175c JS |
1698 | /* |
1699 | * Set the check interval to be 1/5 of the estimated time to | |
1700 | * send a single character, and make it at least 1. The check | |
1701 | * interval should also be less than the timeout. | |
1702 | * | |
1703 | * Note: we have to use pretty tight timings here to satisfy | |
1704 | * the NIST-PCTS. | |
1705 | */ | |
1706 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1707 | char_time = char_time / 5; | |
1708 | if (char_time <= 0) | |
1709 | char_time = 1; | |
1710 | if (timeout < 0) | |
1711 | timeout = 0; | |
1712 | if (timeout) | |
1713 | char_time = min(char_time, timeout); | |
1714 | /* | |
1715 | * If the transmitter hasn't cleared in twice the approximate | |
1716 | * amount of time to send the entire FIFO, it probably won't | |
1717 | * ever clear. This assumes the UART isn't doing flow | |
1718 | * control, which is currently the case. Hence, if it ever | |
1719 | * takes longer than info->timeout, this is probably due to a | |
1720 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1721 | * 2*info->timeout. | |
1722 | */ | |
1723 | if (!timeout || timeout > 2 * info->timeout) | |
1724 | timeout = 2 * info->timeout; | |
1da177e4 | 1725 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 JS |
1726 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
1727 | timeout, char_time, jiffies); | |
1da177e4 | 1728 | #endif |
02f1175c | 1729 | card = info->card; |
875b206b | 1730 | channel = (info->line) - (card->first_line); |
2693f485 | 1731 | if (!cy_is_Z(card)) { |
02f1175c JS |
1732 | chip = channel >> 2; |
1733 | channel &= 0x03; | |
875b206b JS |
1734 | index = card->bus_index; |
1735 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
db05c3b1 | 1736 | while (readb(base_addr + (CySRER << index)) & CyTxRdy) { |
1da177e4 | 1737 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1738 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
1da177e4 | 1739 | #endif |
02f1175c JS |
1740 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1741 | break; | |
1742 | if (timeout && time_after(jiffies, orig_jiffies + | |
1743 | timeout)) | |
1744 | break; | |
1745 | } | |
1da177e4 | 1746 | } |
02f1175c JS |
1747 | /* Run one more char cycle */ |
1748 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
978e595f | 1749 | unlock_kernel(); |
1da177e4 | 1750 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
21719191 | 1751 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
1da177e4 LT |
1752 | #endif |
1753 | } | |
1754 | ||
978e595f AC |
1755 | static void cy_flush_buffer(struct tty_struct *tty) |
1756 | { | |
1757 | struct cyclades_port *info = tty->driver_data; | |
1758 | struct cyclades_card *card; | |
1759 | int channel, retval; | |
1760 | unsigned long flags; | |
1761 | ||
1762 | #ifdef CY_DEBUG_IO | |
1763 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1764 | #endif | |
1765 | ||
1766 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1767 | return; | |
1768 | ||
1769 | card = info->card; | |
1770 | channel = info->line - card->first_line; | |
1771 | ||
1772 | spin_lock_irqsave(&card->card_lock, flags); | |
1773 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1774 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1775 | ||
2693f485 | 1776 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1777 | buffers as well */ |
1778 | spin_lock_irqsave(&card->card_lock, flags); | |
1779 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1780 | if (retval != 0) { | |
1781 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1782 | "was %x\n", info->line, retval); | |
1783 | } | |
1784 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1785 | } | |
1786 | tty_wakeup(tty); | |
1787 | } /* cy_flush_buffer */ | |
1788 | ||
1789 | ||
1da177e4 LT |
1790 | /* |
1791 | * This routine is called when a particular tty device is closed. | |
1792 | */ | |
02f1175c | 1793 | static void cy_close(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1794 | { |
cab9bdd1 | 1795 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 1796 | struct cyclades_card *card; |
02f1175c | 1797 | unsigned long flags; |
1da177e4 | 1798 | |
15ed6cc0 | 1799 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) |
02f1175c | 1800 | return; |
1da177e4 | 1801 | |
9fa1b3b1 JS |
1802 | card = info->card; |
1803 | ||
23342262 | 1804 | if (!tty_port_close_start(&info->port, tty, filp)) |
02f1175c | 1805 | return; |
15ed6cc0 | 1806 | |
9fa1b3b1 | 1807 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1808 | |
2693f485 | 1809 | if (!cy_is_Z(card)) { |
9fa1b3b1 JS |
1810 | int channel = info->line - card->first_line; |
1811 | int index = card->bus_index; | |
1812 | void __iomem *base_addr = card->base_addr + | |
02f1175c JS |
1813 | (cy_chip_offset[channel >> 2] << index); |
1814 | /* Stop accepting input */ | |
1815 | channel &= 0x03; | |
1816 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
1817 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 1818 | readb(base_addr + (CySRER << index)) & ~CyRxData); |
77451e53 | 1819 | if (info->port.flags & ASYNC_INITIALIZED) { |
15ed6cc0 AC |
1820 | /* Waiting for on-board buffers to be empty before |
1821 | closing the port */ | |
9fa1b3b1 | 1822 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1823 | cy_wait_until_sent(tty, info->timeout); |
9fa1b3b1 | 1824 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1825 | } |
1826 | } else { | |
1827 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1828 | /* Waiting for on-board buffers to be empty before closing |
1829 | the port */ | |
f0eefdc3 | 1830 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
9fa1b3b1 | 1831 | int channel = info->line - card->first_line; |
02f1175c JS |
1832 | int retval; |
1833 | ||
f0eefdc3 | 1834 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1835 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1836 | if (retval != 0) { |
21719191 JS |
1837 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1838 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1839 | } |
9fa1b3b1 | 1840 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1841 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1842 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1843 | } |
1da177e4 | 1844 | #endif |
02f1175c JS |
1845 | } |
1846 | ||
9fa1b3b1 | 1847 | spin_unlock_irqrestore(&card->card_lock, flags); |
d13549f8 | 1848 | cy_shutdown(info, tty); |
978e595f | 1849 | cy_flush_buffer(tty); |
02f1175c | 1850 | |
d13549f8 | 1851 | tty_port_tty_set(&info->port, NULL); |
1da177e4 | 1852 | |
23342262 | 1853 | tty_port_close_end(&info->port, tty); |
02f1175c | 1854 | } /* cy_close */ |
1da177e4 LT |
1855 | |
1856 | /* This routine gets called when tty_write has put something into | |
1857 | * the write_queue. The characters may come from user space or | |
1858 | * kernel space. | |
1859 | * | |
1860 | * This routine will return the number of characters actually | |
1861 | * accepted for writing. | |
1862 | * | |
1863 | * If the port is not already transmitting stuff, start it off by | |
1864 | * enabling interrupts. The interrupt service routine will then | |
1865 | * ensure that the characters are sent. | |
1866 | * If the port is already active, there is no need to kick it. | |
1867 | * | |
1868 | */ | |
02f1175c | 1869 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1870 | { |
cab9bdd1 | 1871 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1872 | unsigned long flags; |
1873 | int c, ret = 0; | |
1da177e4 LT |
1874 | |
1875 | #ifdef CY_DEBUG_IO | |
21719191 | 1876 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1877 | #endif |
1878 | ||
15ed6cc0 | 1879 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1880 | return 0; |
1da177e4 | 1881 | |
77451e53 | 1882 | if (!info->port.xmit_buf) |
02f1175c | 1883 | return 0; |
1da177e4 | 1884 | |
9fa1b3b1 | 1885 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1886 | while (1) { |
1a4e2351 HH |
1887 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1888 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1889 | |
1890 | if (c <= 0) | |
1891 | break; | |
1892 | ||
77451e53 | 1893 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1894 | info->xmit_head = (info->xmit_head + c) & |
1895 | (SERIAL_XMIT_SIZE - 1); | |
1896 | info->xmit_cnt += c; | |
1897 | buf += c; | |
1898 | count -= c; | |
1899 | ret += c; | |
1900 | } | |
9fa1b3b1 | 1901 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1902 | |
1903 | info->idle_stats.xmit_bytes += ret; | |
1904 | info->idle_stats.xmit_idle = jiffies; | |
1905 | ||
15ed6cc0 | 1906 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1907 | start_xmit(info); |
15ed6cc0 | 1908 | |
02f1175c JS |
1909 | return ret; |
1910 | } /* cy_write */ | |
1da177e4 LT |
1911 | |
1912 | /* | |
1913 | * This routine is called by the kernel to write a single | |
1914 | * character to the tty device. If the kernel uses this routine, | |
1915 | * it must call the flush_chars() routine (if defined) when it is | |
1916 | * done stuffing characters into the driver. If there is no room | |
1917 | * in the queue, the character is ignored. | |
1918 | */ | |
76b25a55 | 1919 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1920 | { |
cab9bdd1 | 1921 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1922 | unsigned long flags; |
1da177e4 LT |
1923 | |
1924 | #ifdef CY_DEBUG_IO | |
21719191 | 1925 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1926 | #endif |
1927 | ||
02f1175c | 1928 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1929 | return 0; |
1da177e4 | 1930 | |
77451e53 | 1931 | if (!info->port.xmit_buf) |
76b25a55 | 1932 | return 0; |
1da177e4 | 1933 | |
9fa1b3b1 | 1934 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1935 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1936 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1937 | return 0; |
02f1175c | 1938 | } |
1da177e4 | 1939 | |
77451e53 | 1940 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1941 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1942 | info->xmit_cnt++; | |
1da177e4 LT |
1943 | info->idle_stats.xmit_bytes++; |
1944 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1945 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1946 | return 1; |
02f1175c | 1947 | } /* cy_put_char */ |
1da177e4 LT |
1948 | |
1949 | /* | |
1950 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1951 | * series of characters to the tty device using put_char(). |
1da177e4 | 1952 | */ |
02f1175c | 1953 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1954 | { |
cab9bdd1 | 1955 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1956 | |
1da177e4 | 1957 | #ifdef CY_DEBUG_IO |
21719191 | 1958 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1959 | #endif |
1960 | ||
02f1175c JS |
1961 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1962 | return; | |
1da177e4 | 1963 | |
02f1175c | 1964 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1965 | !info->port.xmit_buf) |
02f1175c | 1966 | return; |
1da177e4 | 1967 | |
02f1175c JS |
1968 | start_xmit(info); |
1969 | } /* cy_flush_chars */ | |
1da177e4 LT |
1970 | |
1971 | /* | |
1972 | * This routine returns the numbers of characters the tty driver | |
1973 | * will accept for queuing to be written. This number is subject | |
1974 | * to change as output buffers get emptied, or if the output flow | |
1975 | * control is activated. | |
1976 | */ | |
02f1175c | 1977 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1978 | { |
cab9bdd1 | 1979 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1980 | int ret; |
1981 | ||
1da177e4 | 1982 | #ifdef CY_DEBUG_IO |
21719191 | 1983 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1984 | #endif |
1985 | ||
02f1175c JS |
1986 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1987 | return 0; | |
1988 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1989 | if (ret < 0) | |
1990 | ret = 0; | |
1991 | return ret; | |
1992 | } /* cy_write_room */ | |
1da177e4 | 1993 | |
02f1175c | 1994 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1995 | { |
cab9bdd1 | 1996 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1997 | |
02f1175c JS |
1998 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1999 | return 0; | |
2000 | ||
1da177e4 | 2001 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 2002 | if (!cy_is_Z(info->card)) { |
02f1175c | 2003 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 2004 | #ifdef CY_DEBUG_IO |
21719191 JS |
2005 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2006 | info->line, info->xmit_cnt); | |
1da177e4 | 2007 | #endif |
02f1175c | 2008 | return info->xmit_cnt; |
1da177e4 | 2009 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 2010 | } else { |
f0eefdc3 | 2011 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 2012 | int char_count; |
ad39c300 | 2013 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 2014 | |
978e595f | 2015 | lock_kernel(); |
db05c3b1 JS |
2016 | tx_get = readl(&buf_ctrl->tx_get); |
2017 | tx_put = readl(&buf_ctrl->tx_put); | |
2018 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
2019 | if (tx_put >= tx_get) |
2020 | char_count = tx_put - tx_get; | |
2021 | else | |
2022 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 2023 | #ifdef CY_DEBUG_IO |
21719191 JS |
2024 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
2025 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 2026 | #endif |
978e595f | 2027 | unlock_kernel(); |
096dcfce | 2028 | return info->xmit_cnt + char_count; |
02f1175c JS |
2029 | } |
2030 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
2031 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
2032 | |
2033 | /* | |
2034 | * ------------------------------------------------------------ | |
2035 | * cy_ioctl() and friends | |
2036 | * ------------------------------------------------------------ | |
2037 | */ | |
2038 | ||
1a86b5e3 | 2039 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 2040 | { |
02f1175c | 2041 | int co, co_val, bpr; |
1a86b5e3 | 2042 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 2043 | 25000000); |
1da177e4 | 2044 | |
02f1175c JS |
2045 | if (baud == 0) { |
2046 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
2047 | return; | |
2048 | } | |
1da177e4 | 2049 | |
02f1175c JS |
2050 | /* determine which prescaler to use */ |
2051 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
2052 | if (cy_clock / co_val / baud > 63) | |
2053 | break; | |
2054 | } | |
1da177e4 | 2055 | |
02f1175c JS |
2056 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
2057 | if (bpr > 255) | |
2058 | bpr = 255; | |
1da177e4 | 2059 | |
02f1175c JS |
2060 | info->tbpr = info->rbpr = bpr; |
2061 | info->tco = info->rco = co; | |
1da177e4 LT |
2062 | } |
2063 | ||
2064 | /* | |
2065 | * This routine finds or computes the various line characteristics. | |
2066 | * It used to be called config_setup | |
2067 | */ | |
d13549f8 | 2068 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 2069 | { |
875b206b | 2070 | struct cyclades_card *card; |
02f1175c JS |
2071 | unsigned long flags; |
2072 | void __iomem *base_addr; | |
875b206b | 2073 | int chip, channel, index; |
02f1175c | 2074 | unsigned cflag, iflag; |
02f1175c JS |
2075 | int baud, baud_rate = 0; |
2076 | int i; | |
2077 | ||
d13549f8 | 2078 | if (!tty->termios) /* XXX can this happen at all? */ |
02f1175c | 2079 | return; |
15ed6cc0 AC |
2080 | |
2081 | if (info->line == -1) | |
02f1175c | 2082 | return; |
15ed6cc0 | 2083 | |
d13549f8 JS |
2084 | cflag = tty->termios->c_cflag; |
2085 | iflag = tty->termios->c_iflag; | |
1da177e4 | 2086 | |
02f1175c JS |
2087 | /* |
2088 | * Set up the tty->alt_speed kludge | |
2089 | */ | |
d13549f8 JS |
2090 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
2091 | tty->alt_speed = 57600; | |
2092 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
2093 | tty->alt_speed = 115200; | |
2094 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
2095 | tty->alt_speed = 230400; | |
2096 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
2097 | tty->alt_speed = 460800; | |
02f1175c JS |
2098 | |
2099 | card = info->card; | |
875b206b | 2100 | channel = info->line - card->first_line; |
02f1175c | 2101 | |
2693f485 | 2102 | if (!cy_is_Z(card)) { |
02f1175c | 2103 | |
875b206b | 2104 | index = card->bus_index; |
02f1175c JS |
2105 | |
2106 | /* baud rate */ | |
d13549f8 | 2107 | baud = tty_get_baud_rate(tty); |
77451e53 | 2108 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2109 | ASYNC_SPD_CUST) { |
2110 | if (info->custom_divisor) | |
2111 | baud_rate = info->baud / info->custom_divisor; | |
2112 | else | |
2113 | baud_rate = info->baud; | |
2114 | } else if (baud > CD1400_MAX_SPEED) { | |
2115 | baud = CD1400_MAX_SPEED; | |
2116 | } | |
2117 | /* find the baud index */ | |
2118 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 2119 | if (baud == baud_table[i]) |
02f1175c | 2120 | break; |
02f1175c | 2121 | } |
15ed6cc0 | 2122 | if (i == 20) |
02f1175c | 2123 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2124 | |
77451e53 | 2125 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2126 | ASYNC_SPD_CUST) { |
2127 | cyy_baud_calc(info, baud_rate); | |
2128 | } else { | |
2129 | if (info->chip_rev >= CD1400_REV_J) { | |
2130 | /* It is a CD1400 rev. J or later */ | |
2131 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2132 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2133 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2134 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2135 | } else { | |
2136 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2137 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2138 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2139 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2140 | } | |
2141 | } | |
2142 | if (baud_table[i] == 134) { | |
2143 | /* get it right for 134.5 baud */ | |
2144 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2145 | 2; | |
77451e53 | 2146 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2147 | ASYNC_SPD_CUST) { |
2148 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2149 | baud_rate) + 2; | |
2150 | } else if (baud_table[i]) { | |
2151 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2152 | baud_table[i]) + 2; | |
2153 | /* this needs to be propagated into the card info */ | |
2154 | } else { | |
2155 | info->timeout = 0; | |
2156 | } | |
2157 | /* By tradition (is it a standard?) a baud rate of zero | |
2158 | implies the line should be/has been closed. A bit | |
2159 | later in this routine such a test is performed. */ | |
2160 | ||
2161 | /* byte size and parity */ | |
2162 | info->cor5 = 0; | |
2163 | info->cor4 = 0; | |
2164 | /* receive threshold */ | |
2165 | info->cor3 = (info->default_threshold ? | |
2166 | info->default_threshold : baud_cor3[i]); | |
2167 | info->cor2 = CyETC; | |
2168 | switch (cflag & CSIZE) { | |
2169 | case CS5: | |
2170 | info->cor1 = Cy_5_BITS; | |
2171 | break; | |
2172 | case CS6: | |
2173 | info->cor1 = Cy_6_BITS; | |
2174 | break; | |
2175 | case CS7: | |
2176 | info->cor1 = Cy_7_BITS; | |
2177 | break; | |
2178 | case CS8: | |
2179 | info->cor1 = Cy_8_BITS; | |
2180 | break; | |
2181 | } | |
15ed6cc0 | 2182 | if (cflag & CSTOPB) |
02f1175c | 2183 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2184 | |
02f1175c | 2185 | if (cflag & PARENB) { |
15ed6cc0 | 2186 | if (cflag & PARODD) |
02f1175c | 2187 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2188 | else |
02f1175c | 2189 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2190 | } else |
02f1175c | 2191 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2192 | |
2193 | /* CTS flow control flag */ | |
2194 | if (cflag & CRTSCTS) { | |
77451e53 | 2195 | info->port.flags |= ASYNC_CTS_FLOW; |
02f1175c JS |
2196 | info->cor2 |= CyCtsAE; |
2197 | } else { | |
77451e53 | 2198 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2199 | info->cor2 &= ~CyCtsAE; |
2200 | } | |
2201 | if (cflag & CLOCAL) | |
77451e53 | 2202 | info->port.flags &= ~ASYNC_CHECK_CD; |
02f1175c | 2203 | else |
77451e53 | 2204 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2205 | |
2206 | /*********************************************** | |
2207 | The hardware option, CyRtsAO, presents RTS when | |
2208 | the chip has characters to send. Since most modems | |
2209 | use RTS as reverse (inbound) flow control, this | |
2210 | option is not used. If inbound flow control is | |
2211 | necessary, DTR can be programmed to provide the | |
2212 | appropriate signals for use with a non-standard | |
2213 | cable. Contact Marcio Saito for details. | |
2214 | ***********************************************/ | |
2215 | ||
02f1175c JS |
2216 | chip = channel >> 2; |
2217 | channel &= 0x03; | |
875b206b | 2218 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 2219 | |
9fa1b3b1 | 2220 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2221 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
2222 | ||
2223 | /* tx and rx baud rate */ | |
2224 | ||
2225 | cy_writeb(base_addr + (CyTCOR << index), info->tco); | |
2226 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); | |
2227 | cy_writeb(base_addr + (CyRCOR << index), info->rco); | |
2228 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); | |
2229 | ||
2230 | /* set line characteristics according configuration */ | |
2231 | ||
d13549f8 JS |
2232 | cy_writeb(base_addr + (CySCHR1 << index), START_CHAR(tty)); |
2233 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(tty)); | |
02f1175c JS |
2234 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); |
2235 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); | |
2236 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); | |
2237 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); | |
2238 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); | |
2239 | ||
2240 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | | |
2241 | CyCOR3ch, index); | |
2242 | ||
15ed6cc0 AC |
2243 | /* !!! Is this needed? */ |
2244 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); | |
02f1175c JS |
2245 | cy_writeb(base_addr + (CyRTPR << index), |
2246 | (info->default_timeout ? info->default_timeout : 0x02)); | |
2247 | /* 10ms rx timeout */ | |
2248 | ||
d13549f8 | 2249 | if (C_CLOCAL(tty)) { |
02f1175c JS |
2250 | /* without modem intr */ |
2251 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2252 | readb(base_addr + (CySRER << index)) | CyMdmCh); |
02f1175c JS |
2253 | /* act on 1->0 modem transitions */ |
2254 | if ((cflag & CRTSCTS) && info->rflow) { | |
2255 | cy_writeb(base_addr + (CyMCOR1 << index), | |
2256 | (CyCTS | rflow_thr[i])); | |
2257 | } else { | |
2258 | cy_writeb(base_addr + (CyMCOR1 << index), | |
2259 | CyCTS); | |
2260 | } | |
2261 | /* act on 0->1 modem transitions */ | |
2262 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); | |
1da177e4 | 2263 | } else { |
02f1175c JS |
2264 | /* without modem intr */ |
2265 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 2266 | readb(base_addr + |
02f1175c JS |
2267 | (CySRER << index)) | CyMdmCh); |
2268 | /* act on 1->0 modem transitions */ | |
2269 | if ((cflag & CRTSCTS) && info->rflow) { | |
2270 | cy_writeb(base_addr + (CyMCOR1 << index), | |
2271 | (CyDSR | CyCTS | CyRI | CyDCD | | |
2272 | rflow_thr[i])); | |
2273 | } else { | |
2274 | cy_writeb(base_addr + (CyMCOR1 << index), | |
2275 | CyDSR | CyCTS | CyRI | CyDCD); | |
2276 | } | |
2277 | /* act on 0->1 modem transitions */ | |
2278 | cy_writeb(base_addr + (CyMCOR2 << index), | |
2279 | CyDSR | CyCTS | CyRI | CyDCD); | |
1da177e4 | 2280 | } |
02f1175c | 2281 | |
4d768200 JS |
2282 | if (i == 0) /* baud rate is zero, turn off line */ |
2283 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2284 | else | |
2285 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2286 | |
d13549f8 | 2287 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2288 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2289 | |
1da177e4 | 2290 | } else { |
f0eefdc3 | 2291 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2292 | __u32 sw_flow; |
02f1175c | 2293 | int retval; |
1da177e4 | 2294 | |
2693f485 | 2295 | if (!cyz_is_loaded(card)) |
02f1175c | 2296 | return; |
1da177e4 | 2297 | |
02f1175c | 2298 | /* baud rate */ |
d13549f8 | 2299 | baud = tty_get_baud_rate(tty); |
77451e53 | 2300 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2301 | ASYNC_SPD_CUST) { |
2302 | if (info->custom_divisor) | |
2303 | baud_rate = info->baud / info->custom_divisor; | |
2304 | else | |
2305 | baud_rate = info->baud; | |
2306 | } else if (baud > CYZ_MAX_SPEED) { | |
2307 | baud = CYZ_MAX_SPEED; | |
2308 | } | |
2309 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2310 | ||
2311 | if (baud == 134) { | |
2312 | /* get it right for 134.5 baud */ | |
2313 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2314 | 2; | |
77451e53 | 2315 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2316 | ASYNC_SPD_CUST) { |
2317 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2318 | baud_rate) + 2; | |
2319 | } else if (baud) { | |
2320 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2321 | baud) + 2; | |
2322 | /* this needs to be propagated into the card info */ | |
2323 | } else { | |
2324 | info->timeout = 0; | |
2325 | } | |
1da177e4 | 2326 | |
02f1175c JS |
2327 | /* byte size and parity */ |
2328 | switch (cflag & CSIZE) { | |
2329 | case CS5: | |
2330 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2331 | break; | |
2332 | case CS6: | |
2333 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2334 | break; | |
2335 | case CS7: | |
2336 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2337 | break; | |
2338 | case CS8: | |
2339 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2340 | break; | |
2341 | } | |
2342 | if (cflag & CSTOPB) { | |
2343 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2344 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2345 | } else { |
2346 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2347 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2348 | } |
2349 | if (cflag & PARENB) { | |
15ed6cc0 | 2350 | if (cflag & PARODD) |
02f1175c | 2351 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2352 | else |
02f1175c | 2353 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2354 | } else |
02f1175c | 2355 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2356 | |
02f1175c JS |
2357 | /* CTS flow control flag */ |
2358 | if (cflag & CRTSCTS) { | |
2359 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2360 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2361 | } else { |
db05c3b1 JS |
2362 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2363 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2364 | } |
2365 | /* As the HW flow control is done in firmware, the driver | |
2366 | doesn't need to care about it */ | |
77451e53 | 2367 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2368 | |
2369 | /* XON/XOFF/XANY flow control flags */ | |
2370 | sw_flow = 0; | |
2371 | if (iflag & IXON) { | |
2372 | sw_flow |= C_FL_OXX; | |
2373 | if (iflag & IXANY) | |
2374 | sw_flow |= C_FL_OIXANY; | |
2375 | } | |
2376 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2377 | ||
875b206b | 2378 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2379 | if (retval != 0) { |
21719191 JS |
2380 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2381 | "was %x\n", info->line, retval); | |
02f1175c JS |
2382 | } |
2383 | ||
2384 | /* CD sensitivity */ | |
15ed6cc0 | 2385 | if (cflag & CLOCAL) |
77451e53 | 2386 | info->port.flags &= ~ASYNC_CHECK_CD; |
15ed6cc0 | 2387 | else |
77451e53 | 2388 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 2389 | |
02f1175c JS |
2390 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2391 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2392 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2393 | #ifdef CY_DEBUG_DTR |
21719191 | 2394 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2395 | #endif |
02f1175c JS |
2396 | } else { |
2397 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2398 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2399 | #ifdef CY_DEBUG_DTR |
21719191 | 2400 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2401 | #endif |
02f1175c | 2402 | } |
1da177e4 | 2403 | |
15ed6cc0 | 2404 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2405 | if (retval != 0) { |
21719191 JS |
2406 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2407 | "was %x\n", info->line, retval); | |
02f1175c | 2408 | } |
1da177e4 | 2409 | |
d13549f8 | 2410 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2411 | } |
02f1175c | 2412 | } /* set_line_char */ |
1da177e4 | 2413 | |
6c28181c | 2414 | static int cy_get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 2415 | struct serial_struct __user *retinfo) |
1da177e4 | 2416 | { |
875b206b | 2417 | struct cyclades_card *cinfo = info->card; |
6c28181c JS |
2418 | struct serial_struct tmp = { |
2419 | .type = info->type, | |
2420 | .line = info->line, | |
2421 | .port = (info->card - cy_card) * 0x100 + info->line - | |
2422 | cinfo->first_line, | |
2423 | .irq = cinfo->irq, | |
2424 | .flags = info->port.flags, | |
2425 | .close_delay = info->port.close_delay, | |
2426 | .closing_wait = info->port.closing_wait, | |
2427 | .baud_base = info->baud, | |
2428 | .custom_divisor = info->custom_divisor, | |
2429 | .hub6 = 0, /*!!! */ | |
2430 | }; | |
02f1175c | 2431 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
6c28181c | 2432 | } |
1da177e4 LT |
2433 | |
2434 | static int | |
d13549f8 | 2435 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
15ed6cc0 | 2436 | struct serial_struct __user *new_info) |
1da177e4 | 2437 | { |
02f1175c | 2438 | struct serial_struct new_serial; |
02f1175c JS |
2439 | |
2440 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2441 | return -EFAULT; | |
02f1175c JS |
2442 | |
2443 | if (!capable(CAP_SYS_ADMIN)) { | |
44b7d1b3 | 2444 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
2445 | new_serial.baud_base != info->baud || |
2446 | (new_serial.flags & ASYNC_FLAGS & | |
2447 | ~ASYNC_USR_MASK) != | |
77451e53 | 2448 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
02f1175c | 2449 | return -EPERM; |
77451e53 | 2450 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
2451 | (new_serial.flags & ASYNC_USR_MASK); |
2452 | info->baud = new_serial.baud_base; | |
2453 | info->custom_divisor = new_serial.custom_divisor; | |
2454 | goto check_and_exit; | |
2455 | } | |
2456 | ||
2457 | /* | |
2458 | * OK, past this point, all the error checking has been done. | |
2459 | * At this point, we start making changes..... | |
2460 | */ | |
2461 | ||
2462 | info->baud = new_serial.baud_base; | |
2463 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 2464 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 2465 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
2466 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
2467 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
2468 | |
2469 | check_and_exit: | |
77451e53 | 2470 | if (info->port.flags & ASYNC_INITIALIZED) { |
d13549f8 | 2471 | cy_set_line_char(info, tty); |
02f1175c JS |
2472 | return 0; |
2473 | } else { | |
d13549f8 | 2474 | return cy_startup(info, tty); |
02f1175c JS |
2475 | } |
2476 | } /* set_serial_info */ | |
1da177e4 LT |
2477 | |
2478 | /* | |
2479 | * get_lsr_info - get line status register info | |
2480 | * | |
2481 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2482 | * is emptied. On bus types like RS485, the transmitter must | |
2483 | * release the bus after transmitting. This must be done when | |
2484 | * the transmit shift register is empty, not be done when the | |
2485 | * transmit holding register is empty. This functionality | |
2486 | * allows an RS485 driver to be written in user space. | |
2487 | */ | |
15ed6cc0 | 2488 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2489 | { |
875b206b JS |
2490 | struct cyclades_card *card; |
2491 | int chip, channel, index; | |
02f1175c JS |
2492 | unsigned char status; |
2493 | unsigned int result; | |
2494 | unsigned long flags; | |
2495 | void __iomem *base_addr; | |
1da177e4 | 2496 | |
02f1175c | 2497 | card = info->card; |
875b206b | 2498 | channel = (info->line) - (card->first_line); |
2693f485 | 2499 | if (!cy_is_Z(card)) { |
02f1175c JS |
2500 | chip = channel >> 2; |
2501 | channel &= 0x03; | |
875b206b JS |
2502 | index = card->bus_index; |
2503 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 2504 | |
9fa1b3b1 | 2505 | spin_lock_irqsave(&card->card_lock, flags); |
db05c3b1 | 2506 | status = readb(base_addr + (CySRER << index)) & |
02f1175c | 2507 | (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2508 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2509 | result = (status ? 0 : TIOCSER_TEMT); |
2510 | } else { | |
2511 | /* Not supported yet */ | |
2512 | return -EINVAL; | |
2513 | } | |
2514 | return put_user(result, (unsigned long __user *)value); | |
1da177e4 LT |
2515 | } |
2516 | ||
02f1175c | 2517 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 2518 | { |
cab9bdd1 | 2519 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2520 | struct cyclades_card *card; |
2521 | int chip, channel, index; | |
02f1175c JS |
2522 | void __iomem *base_addr; |
2523 | unsigned long flags; | |
2524 | unsigned char status; | |
2525 | unsigned long lstatus; | |
2526 | unsigned int result; | |
02f1175c | 2527 | |
bf9d8929 | 2528 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2529 | return -ENODEV; |
1da177e4 | 2530 | |
7b130c0e AC |
2531 | lock_kernel(); |
2532 | ||
02f1175c | 2533 | card = info->card; |
875b206b | 2534 | channel = info->line - card->first_line; |
2693f485 | 2535 | if (!cy_is_Z(card)) { |
02f1175c JS |
2536 | chip = channel >> 2; |
2537 | channel &= 0x03; | |
875b206b JS |
2538 | index = card->bus_index; |
2539 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 2540 | |
9fa1b3b1 | 2541 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2542 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
db05c3b1 JS |
2543 | status = readb(base_addr + (CyMSVR1 << index)); |
2544 | status |= readb(base_addr + (CyMSVR2 << index)); | |
9fa1b3b1 | 2545 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2546 | |
2547 | if (info->rtsdtr_inv) { | |
2548 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2549 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2550 | } else { | |
2551 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2552 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2553 | } | |
2554 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2555 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2556 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2557 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2558 | } else { |
2693f485 | 2559 | if (cyz_is_loaded(card)) { |
f0eefdc3 | 2560 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
02f1175c JS |
2561 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
2562 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2563 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2564 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2565 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2566 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
2567 | } else { | |
2568 | result = 0; | |
7b130c0e | 2569 | unlock_kernel(); |
02f1175c JS |
2570 | return -ENODEV; |
2571 | } | |
1da177e4 | 2572 | |
02f1175c | 2573 | } |
7b130c0e | 2574 | unlock_kernel(); |
02f1175c JS |
2575 | return result; |
2576 | } /* cy_tiomget */ | |
1da177e4 LT |
2577 | |
2578 | static int | |
2579 | cy_tiocmset(struct tty_struct *tty, struct file *file, | |
02f1175c | 2580 | unsigned int set, unsigned int clear) |
1da177e4 | 2581 | { |
cab9bdd1 | 2582 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2583 | struct cyclades_card *card; |
02f1175c | 2584 | unsigned long flags; |
4d768200 | 2585 | int channel, retval; |
02f1175c | 2586 | |
bf9d8929 | 2587 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2588 | return -ENODEV; |
2589 | ||
2590 | card = info->card; | |
875b206b | 2591 | channel = (info->line) - (card->first_line); |
2693f485 | 2592 | if (!cy_is_Z(card)) { |
4d768200 JS |
2593 | spin_lock_irqsave(&card->card_lock, flags); |
2594 | cyy_change_rts_dtr(info, set, clear); | |
2595 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2596 | } else { |
2693f485 | 2597 | if (cyz_is_loaded(card)) { |
f0eefdc3 | 2598 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
2599 | |
2600 | if (set & TIOCM_RTS) { | |
9fa1b3b1 | 2601 | spin_lock_irqsave(&card->card_lock, flags); |
f0eefdc3 JS |
2602 | cy_writel(&ch_ctrl->rs_control, |
2603 | readl(&ch_ctrl->rs_control) | C_RS_RTS); | |
9fa1b3b1 | 2604 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2605 | } |
2606 | if (clear & TIOCM_RTS) { | |
9fa1b3b1 | 2607 | spin_lock_irqsave(&card->card_lock, flags); |
f0eefdc3 JS |
2608 | cy_writel(&ch_ctrl->rs_control, |
2609 | readl(&ch_ctrl->rs_control) & | |
db05c3b1 | 2610 | ~C_RS_RTS); |
9fa1b3b1 | 2611 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2612 | } |
2613 | if (set & TIOCM_DTR) { | |
9fa1b3b1 | 2614 | spin_lock_irqsave(&card->card_lock, flags); |
f0eefdc3 JS |
2615 | cy_writel(&ch_ctrl->rs_control, |
2616 | readl(&ch_ctrl->rs_control) | C_RS_DTR); | |
1da177e4 | 2617 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2618 | printk(KERN_DEBUG "cyc:set_modem_info raising " |
2619 | "Z DTR\n"); | |
1da177e4 | 2620 | #endif |
9fa1b3b1 | 2621 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2622 | } |
2623 | if (clear & TIOCM_DTR) { | |
9fa1b3b1 | 2624 | spin_lock_irqsave(&card->card_lock, flags); |
f0eefdc3 JS |
2625 | cy_writel(&ch_ctrl->rs_control, |
2626 | readl(&ch_ctrl->rs_control) & | |
db05c3b1 | 2627 | ~C_RS_DTR); |
1da177e4 | 2628 | #ifdef CY_DEBUG_DTR |
21719191 JS |
2629 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2630 | "Z DTR\n"); | |
1da177e4 | 2631 | #endif |
9fa1b3b1 | 2632 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2633 | } |
2634 | } else { | |
2635 | return -ENODEV; | |
2636 | } | |
9fa1b3b1 JS |
2637 | spin_lock_irqsave(&card->card_lock, flags); |
2638 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); | |
02f1175c | 2639 | if (retval != 0) { |
21719191 JS |
2640 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2641 | "was %x\n", info->line, retval); | |
02f1175c | 2642 | } |
9fa1b3b1 | 2643 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2644 | } |
02f1175c JS |
2645 | return 0; |
2646 | } /* cy_tiocmset */ | |
1da177e4 LT |
2647 | |
2648 | /* | |
2649 | * cy_break() --- routine which turns the break handling on or off | |
2650 | */ | |
9e98966c | 2651 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2652 | { |
cab9bdd1 | 2653 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2654 | struct cyclades_card *card; |
02f1175c | 2655 | unsigned long flags; |
9e98966c | 2656 | int retval = 0; |
1da177e4 | 2657 | |
02f1175c | 2658 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2659 | return -EINVAL; |
1da177e4 | 2660 | |
9fa1b3b1 JS |
2661 | card = info->card; |
2662 | ||
2663 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2664 | if (!cy_is_Z(card)) { |
02f1175c JS |
2665 | /* Let the transmit ISR take care of this (since it |
2666 | requires stuffing characters into the output stream). | |
2667 | */ | |
2668 | if (break_state == -1) { | |
2669 | if (!info->breakon) { | |
2670 | info->breakon = 1; | |
2671 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2672 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2673 | start_xmit(info); |
9fa1b3b1 | 2674 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2675 | } |
2676 | } | |
2677 | } else { | |
2678 | if (!info->breakoff) { | |
2679 | info->breakoff = 1; | |
2680 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2681 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2682 | start_xmit(info); |
9fa1b3b1 | 2683 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2684 | } |
2685 | } | |
1da177e4 | 2686 | } |
1da177e4 | 2687 | } else { |
02f1175c | 2688 | if (break_state == -1) { |
9fa1b3b1 JS |
2689 | retval = cyz_issue_cmd(card, |
2690 | info->line - card->first_line, | |
02f1175c JS |
2691 | C_CM_SET_BREAK, 0L); |
2692 | if (retval != 0) { | |
21719191 JS |
2693 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2694 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2695 | } |
2696 | } else { | |
9fa1b3b1 JS |
2697 | retval = cyz_issue_cmd(card, |
2698 | info->line - card->first_line, | |
02f1175c JS |
2699 | C_CM_CLR_BREAK, 0L); |
2700 | if (retval != 0) { | |
21719191 JS |
2701 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2702 | "on ttyC%d was %x\n", info->line, | |
2703 | retval); | |
02f1175c | 2704 | } |
1da177e4 | 2705 | } |
1da177e4 | 2706 | } |
9fa1b3b1 | 2707 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2708 | return retval; |
02f1175c | 2709 | } /* cy_break */ |
1da177e4 | 2710 | |
02f1175c | 2711 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2712 | { |
875b206b | 2713 | struct cyclades_card *card; |
02f1175c | 2714 | void __iomem *base_addr; |
875b206b | 2715 | int channel, chip, index; |
02f1175c | 2716 | unsigned long flags; |
1da177e4 | 2717 | |
02f1175c | 2718 | card = info->card; |
875b206b | 2719 | channel = info->line - card->first_line; |
2693f485 | 2720 | if (!cy_is_Z(card)) { |
02f1175c JS |
2721 | chip = channel >> 2; |
2722 | channel &= 0x03; | |
875b206b | 2723 | index = card->bus_index; |
02f1175c | 2724 | base_addr = |
875b206b | 2725 | card->base_addr + (cy_chip_offset[chip] << index); |
02f1175c JS |
2726 | |
2727 | info->cor3 &= ~CyREC_FIFO; | |
2728 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2729 | |
9fa1b3b1 | 2730 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2731 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
2732 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); | |
9fa1b3b1 | 2733 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2734 | } |
2735 | return 0; | |
2736 | } /* set_threshold */ | |
1da177e4 | 2737 | |
15ed6cc0 AC |
2738 | static int get_threshold(struct cyclades_port *info, |
2739 | unsigned long __user *value) | |
1da177e4 | 2740 | { |
875b206b | 2741 | struct cyclades_card *card; |
02f1175c | 2742 | void __iomem *base_addr; |
875b206b | 2743 | int channel, chip, index; |
02f1175c | 2744 | unsigned long tmp; |
1da177e4 | 2745 | |
02f1175c | 2746 | card = info->card; |
875b206b | 2747 | channel = info->line - card->first_line; |
2693f485 | 2748 | if (!cy_is_Z(card)) { |
02f1175c JS |
2749 | chip = channel >> 2; |
2750 | channel &= 0x03; | |
875b206b JS |
2751 | index = card->bus_index; |
2752 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 2753 | |
db05c3b1 | 2754 | tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
02f1175c | 2755 | return put_user(tmp, value); |
02f1175c | 2756 | } |
f7429034 | 2757 | return 0; |
02f1175c | 2758 | } /* get_threshold */ |
1da177e4 | 2759 | |
02f1175c | 2760 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2761 | { |
875b206b | 2762 | struct cyclades_card *card; |
02f1175c | 2763 | void __iomem *base_addr; |
875b206b | 2764 | int channel, chip, index; |
02f1175c | 2765 | unsigned long flags; |
1da177e4 | 2766 | |
02f1175c | 2767 | card = info->card; |
875b206b | 2768 | channel = info->line - card->first_line; |
2693f485 | 2769 | if (!cy_is_Z(card)) { |
02f1175c JS |
2770 | chip = channel >> 2; |
2771 | channel &= 0x03; | |
875b206b JS |
2772 | index = card->bus_index; |
2773 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
1da177e4 | 2774 | |
9fa1b3b1 | 2775 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 2776 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); |
9fa1b3b1 | 2777 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2778 | } |
2779 | return 0; | |
2780 | } /* set_timeout */ | |
1da177e4 | 2781 | |
15ed6cc0 AC |
2782 | static int get_timeout(struct cyclades_port *info, |
2783 | unsigned long __user *value) | |
1da177e4 | 2784 | { |
875b206b | 2785 | struct cyclades_card *card; |
02f1175c | 2786 | void __iomem *base_addr; |
875b206b | 2787 | int channel, chip, index; |
02f1175c | 2788 | unsigned long tmp; |
1da177e4 | 2789 | |
02f1175c | 2790 | card = info->card; |
875b206b | 2791 | channel = info->line - card->first_line; |
2693f485 | 2792 | if (!cy_is_Z(card)) { |
02f1175c JS |
2793 | chip = channel >> 2; |
2794 | channel &= 0x03; | |
875b206b JS |
2795 | index = card->bus_index; |
2796 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); | |
02f1175c | 2797 | |
db05c3b1 | 2798 | tmp = readb(base_addr + (CyRTPR << index)); |
02f1175c | 2799 | return put_user(tmp, value); |
02f1175c | 2800 | } |
f7429034 | 2801 | return 0; |
02f1175c | 2802 | } /* get_timeout */ |
1da177e4 | 2803 | |
6c28181c JS |
2804 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2805 | struct cyclades_icount *cprev) | |
1da177e4 | 2806 | { |
6c28181c JS |
2807 | struct cyclades_icount cnow; |
2808 | unsigned long flags; | |
2809 | int ret; | |
1da177e4 | 2810 | |
6c28181c JS |
2811 | spin_lock_irqsave(&info->card->card_lock, flags); |
2812 | cnow = info->icount; /* atomic copy */ | |
2813 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2814 | ||
2815 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2816 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2817 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2818 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2819 | ||
2820 | *cprev = cnow; | |
2821 | ||
2822 | return ret; | |
2823 | } | |
1da177e4 LT |
2824 | |
2825 | /* | |
2826 | * This routine allows the tty driver to implement device- | |
2827 | * specific ioctl's. If the ioctl number passed in cmd is | |
2828 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2829 | */ | |
2830 | static int | |
02f1175c JS |
2831 | cy_ioctl(struct tty_struct *tty, struct file *file, |
2832 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 2833 | { |
cab9bdd1 | 2834 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2835 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2836 | int ret_val = 0; |
2837 | unsigned long flags; | |
2838 | void __user *argp = (void __user *)arg; | |
2839 | ||
2840 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2841 | return -ENODEV; | |
1da177e4 LT |
2842 | |
2843 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2844 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2845 | info->line, cmd, arg); | |
1da177e4 | 2846 | #endif |
7b130c0e | 2847 | lock_kernel(); |
1da177e4 | 2848 | |
02f1175c JS |
2849 | switch (cmd) { |
2850 | case CYGETMON: | |
6c28181c JS |
2851 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2852 | ret_val = -EFAULT; | |
2853 | break; | |
2854 | } | |
2855 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2856 | break; |
2857 | case CYGETTHRESH: | |
2858 | ret_val = get_threshold(info, argp); | |
2859 | break; | |
2860 | case CYSETTHRESH: | |
2861 | ret_val = set_threshold(info, arg); | |
2862 | break; | |
2863 | case CYGETDEFTHRESH: | |
6c28181c JS |
2864 | ret_val = put_user(info->default_threshold, |
2865 | (unsigned long __user *)argp); | |
02f1175c JS |
2866 | break; |
2867 | case CYSETDEFTHRESH: | |
6c28181c | 2868 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2869 | break; |
2870 | case CYGETTIMEOUT: | |
2871 | ret_val = get_timeout(info, argp); | |
2872 | break; | |
2873 | case CYSETTIMEOUT: | |
2874 | ret_val = set_timeout(info, arg); | |
2875 | break; | |
2876 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2877 | ret_val = put_user(info->default_timeout, |
2878 | (unsigned long __user *)argp); | |
02f1175c JS |
2879 | break; |
2880 | case CYSETDEFTIMEOUT: | |
6c28181c | 2881 | info->default_timeout = arg & 0xff; |
02f1175c | 2882 | break; |
1da177e4 | 2883 | case CYSETRFLOW: |
02f1175c | 2884 | info->rflow = (int)arg; |
02f1175c | 2885 | break; |
1da177e4 | 2886 | case CYGETRFLOW: |
02f1175c JS |
2887 | ret_val = info->rflow; |
2888 | break; | |
1da177e4 | 2889 | case CYSETRTSDTR_INV: |
02f1175c | 2890 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2891 | break; |
1da177e4 | 2892 | case CYGETRTSDTR_INV: |
02f1175c JS |
2893 | ret_val = info->rtsdtr_inv; |
2894 | break; | |
1da177e4 | 2895 | case CYGETCD1400VER: |
02f1175c JS |
2896 | ret_val = info->chip_rev; |
2897 | break; | |
1da177e4 LT |
2898 | #ifndef CONFIG_CYZ_INTR |
2899 | case CYZSETPOLLCYCLE: | |
02f1175c | 2900 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2901 | break; |
1da177e4 | 2902 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2903 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2904 | break; | |
2905 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2906 | case CYSETWAIT: |
44b7d1b3 | 2907 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2908 | break; |
1da177e4 | 2909 | case CYGETWAIT: |
44b7d1b3 | 2910 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
2911 | break; |
2912 | case TIOCGSERIAL: | |
6c28181c | 2913 | ret_val = cy_get_serial_info(info, argp); |
02f1175c JS |
2914 | break; |
2915 | case TIOCSSERIAL: | |
d13549f8 | 2916 | ret_val = cy_set_serial_info(info, tty, argp); |
02f1175c JS |
2917 | break; |
2918 | case TIOCSERGETLSR: /* Get line status register */ | |
2919 | ret_val = get_lsr_info(info, argp); | |
2920 | break; | |
2921 | /* | |
2922 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2923 | * - mask passed in arg for lines of interest | |
2924 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2925 | * Caller should use TIOCGICOUNT to see which one it was | |
2926 | */ | |
1da177e4 | 2927 | case TIOCMIWAIT: |
9fa1b3b1 | 2928 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2929 | /* note the counters on entry */ |
2c7fea99 | 2930 | cnow = info->icount; |
9fa1b3b1 | 2931 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
6c28181c JS |
2932 | ret_val = wait_event_interruptible(info->delta_msr_wait, |
2933 | cy_cflags_changed(info, arg, &cnow)); | |
2c7fea99 | 2934 | break; |
1da177e4 | 2935 | |
02f1175c JS |
2936 | /* |
2937 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2938 | * Return: write counters to the user passed counter struct | |
2939 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2940 | * RI where only 0->1 is counted. | |
2941 | */ | |
6c28181c JS |
2942 | case TIOCGICOUNT: { |
2943 | struct serial_icounter_struct sic = { }; | |
2944 | ||
9fa1b3b1 | 2945 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2946 | cnow = info->icount; |
9fa1b3b1 | 2947 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
6c28181c JS |
2948 | |
2949 | sic.cts = cnow.cts; | |
2950 | sic.dsr = cnow.dsr; | |
2951 | sic.rng = cnow.rng; | |
2952 | sic.dcd = cnow.dcd; | |
2953 | sic.rx = cnow.rx; | |
2954 | sic.tx = cnow.tx; | |
2955 | sic.frame = cnow.frame; | |
2956 | sic.overrun = cnow.overrun; | |
2957 | sic.parity = cnow.parity; | |
2958 | sic.brk = cnow.brk; | |
2959 | sic.buf_overrun = cnow.buf_overrun; | |
2960 | ||
2961 | if (copy_to_user(argp, &sic, sizeof(sic))) | |
2962 | ret_val = -EFAULT; | |
02f1175c | 2963 | break; |
6c28181c | 2964 | } |
02f1175c JS |
2965 | default: |
2966 | ret_val = -ENOIOCTLCMD; | |
2967 | } | |
7b130c0e | 2968 | unlock_kernel(); |
1da177e4 LT |
2969 | |
2970 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2971 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2972 | #endif |
02f1175c JS |
2973 | return ret_val; |
2974 | } /* cy_ioctl */ | |
1da177e4 LT |
2975 | |
2976 | /* | |
2977 | * This routine allows the tty driver to be notified when | |
2978 | * device's termios settings have changed. Note that a | |
2979 | * well-designed tty driver should be prepared to accept the case | |
2980 | * where old == NULL, and try to do something rational. | |
2981 | */ | |
02f1175c | 2982 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2983 | { |
cab9bdd1 | 2984 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2985 | |
2986 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2987 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2988 | #endif |
2989 | ||
d13549f8 | 2990 | cy_set_line_char(info, tty); |
02f1175c JS |
2991 | |
2992 | if ((old_termios->c_cflag & CRTSCTS) && | |
2993 | !(tty->termios->c_cflag & CRTSCTS)) { | |
2994 | tty->hw_stopped = 0; | |
2995 | cy_start(tty); | |
2996 | } | |
1da177e4 | 2997 | #if 0 |
02f1175c JS |
2998 | /* |
2999 | * No need to wake up processes in open wait, since they | |
3000 | * sample the CLOCAL flag once, and don't recheck it. | |
3001 | * XXX It's not clear whether the current behavior is correct | |
3002 | * or not. Hence, this may change..... | |
3003 | */ | |
3004 | if (!(old_termios->c_cflag & CLOCAL) && | |
3005 | (tty->termios->c_cflag & CLOCAL)) | |
77451e53 | 3006 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 3007 | #endif |
02f1175c | 3008 | } /* cy_set_termios */ |
1da177e4 LT |
3009 | |
3010 | /* This function is used to send a high-priority XON/XOFF character to | |
3011 | the device. | |
3012 | */ | |
02f1175c | 3013 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 3014 | { |
cab9bdd1 | 3015 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
3016 | struct cyclades_card *card; |
3017 | int channel; | |
1da177e4 | 3018 | |
02f1175c | 3019 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
3020 | return; |
3021 | ||
02f1175c | 3022 | info->x_char = ch; |
1da177e4 LT |
3023 | |
3024 | if (ch) | |
02f1175c | 3025 | cy_start(tty); |
1da177e4 LT |
3026 | |
3027 | card = info->card; | |
875b206b | 3028 | channel = info->line - card->first_line; |
1da177e4 | 3029 | |
2693f485 | 3030 | if (cy_is_Z(card)) { |
02f1175c | 3031 | if (ch == STOP_CHAR(tty)) |
875b206b | 3032 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 3033 | else if (ch == START_CHAR(tty)) |
875b206b | 3034 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
3035 | } |
3036 | } | |
3037 | ||
3038 | /* This routine is called by the upper-layer tty layer to signal | |
3039 | that incoming characters should be throttled because the input | |
3040 | buffers are close to full. | |
3041 | */ | |
02f1175c | 3042 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 3043 | { |
cab9bdd1 | 3044 | struct cyclades_port *info = tty->driver_data; |
875b206b | 3045 | struct cyclades_card *card; |
02f1175c | 3046 | unsigned long flags; |
1da177e4 LT |
3047 | |
3048 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c | 3049 | char buf[64]; |
1da177e4 | 3050 | |
21719191 | 3051 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
02f1175c | 3052 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
3053 | #endif |
3054 | ||
15ed6cc0 | 3055 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 3056 | return; |
02f1175c JS |
3057 | |
3058 | card = info->card; | |
3059 | ||
3060 | if (I_IXOFF(tty)) { | |
2693f485 | 3061 | if (!cy_is_Z(card)) |
02f1175c JS |
3062 | cy_send_xchar(tty, STOP_CHAR(tty)); |
3063 | else | |
3064 | info->throttle = 1; | |
3065 | } | |
1da177e4 | 3066 | |
02f1175c | 3067 | if (tty->termios->c_cflag & CRTSCTS) { |
2693f485 | 3068 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 3069 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 3070 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 3071 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3072 | } else { |
3073 | info->throttle = 1; | |
3074 | } | |
3075 | } | |
02f1175c | 3076 | } /* cy_throttle */ |
1da177e4 LT |
3077 | |
3078 | /* | |
3079 | * This routine notifies the tty driver that it should signal | |
3080 | * that characters can now be sent to the tty without fear of | |
3081 | * overrunning the input buffers of the line disciplines. | |
3082 | */ | |
02f1175c | 3083 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 3084 | { |
cab9bdd1 | 3085 | struct cyclades_port *info = tty->driver_data; |
875b206b | 3086 | struct cyclades_card *card; |
02f1175c | 3087 | unsigned long flags; |
1da177e4 LT |
3088 | |
3089 | #ifdef CY_DEBUG_THROTTLE | |
02f1175c JS |
3090 | char buf[64]; |
3091 | ||
21719191 | 3092 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
15ed6cc0 | 3093 | tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); |
1da177e4 LT |
3094 | #endif |
3095 | ||
15ed6cc0 | 3096 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 3097 | return; |
1da177e4 | 3098 | |
02f1175c JS |
3099 | if (I_IXOFF(tty)) { |
3100 | if (info->x_char) | |
3101 | info->x_char = 0; | |
3102 | else | |
3103 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 3104 | } |
1da177e4 | 3105 | |
02f1175c JS |
3106 | if (tty->termios->c_cflag & CRTSCTS) { |
3107 | card = info->card; | |
2693f485 | 3108 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 3109 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 3110 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 3111 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
3112 | } else { |
3113 | info->throttle = 0; | |
3114 | } | |
3115 | } | |
02f1175c | 3116 | } /* cy_unthrottle */ |
1da177e4 LT |
3117 | |
3118 | /* cy_start and cy_stop provide software output flow control as a | |
3119 | function of XON/XOFF, software CTS, and other such stuff. | |
3120 | */ | |
02f1175c | 3121 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 3122 | { |
02f1175c | 3123 | struct cyclades_card *cinfo; |
cab9bdd1 | 3124 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
3125 | void __iomem *base_addr; |
3126 | int chip, channel, index; | |
3127 | unsigned long flags; | |
1da177e4 LT |
3128 | |
3129 | #ifdef CY_DEBUG_OTHER | |
21719191 | 3130 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
3131 | #endif |
3132 | ||
02f1175c JS |
3133 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
3134 | return; | |
1da177e4 | 3135 | |
875b206b | 3136 | cinfo = info->card; |
02f1175c | 3137 | channel = info->line - cinfo->first_line; |
2693f485 | 3138 | if (!cy_is_Z(cinfo)) { |
02f1175c JS |
3139 | index = cinfo->bus_index; |
3140 | chip = channel >> 2; | |
3141 | channel &= 0x03; | |
9fa1b3b1 | 3142 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 3143 | |
9fa1b3b1 | 3144 | spin_lock_irqsave(&cinfo->card_lock, flags); |
02f1175c JS |
3145 | cy_writeb(base_addr + (CyCAR << index), |
3146 | (u_char)(channel & 0x0003)); /* index channel */ | |
3147 | cy_writeb(base_addr + (CySRER << index), | |
db05c3b1 | 3148 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
9fa1b3b1 | 3149 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 3150 | } |
02f1175c | 3151 | } /* cy_stop */ |
1da177e4 | 3152 | |
02f1175c | 3153 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 3154 | { |
02f1175c | 3155 | struct cyclades_card *cinfo; |
cab9bdd1 | 3156 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
3157 | void __iomem *base_addr; |
3158 | int chip, channel, index; | |
3159 | unsigned long flags; | |
1da177e4 LT |
3160 | |
3161 | #ifdef CY_DEBUG_OTHER | |
21719191 | 3162 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
3163 | #endif |
3164 | ||
02f1175c JS |
3165 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
3166 | return; | |
1da177e4 | 3167 | |
875b206b | 3168 | cinfo = info->card; |
02f1175c JS |
3169 | channel = info->line - cinfo->first_line; |
3170 | index = cinfo->bus_index; | |
2693f485 | 3171 | if (!cy_is_Z(cinfo)) { |
02f1175c JS |
3172 | chip = channel >> 2; |
3173 | channel &= 0x03; | |
9fa1b3b1 | 3174 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
1da177e4 | 3175 | |
9fa1b3b1 | 3176 | spin_lock_irqsave(&cinfo->card_lock, flags); |
15ed6cc0 AC |
3177 | cy_writeb(base_addr + (CyCAR << index), |
3178 | (u_char) (channel & 0x0003)); /* index channel */ | |
02f1175c | 3179 | cy_writeb(base_addr + (CySRER << index), |
db05c3b1 | 3180 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
9fa1b3b1 | 3181 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 3182 | } |
02f1175c | 3183 | } /* cy_start */ |
1da177e4 | 3184 | |
1da177e4 LT |
3185 | /* |
3186 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
3187 | */ | |
02f1175c | 3188 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 3189 | { |
cab9bdd1 | 3190 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 3191 | |
1da177e4 | 3192 | #ifdef CY_DEBUG_OTHER |
21719191 | 3193 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
3194 | #endif |
3195 | ||
02f1175c JS |
3196 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
3197 | return; | |
1da177e4 | 3198 | |
02f1175c | 3199 | cy_flush_buffer(tty); |
d13549f8 | 3200 | cy_shutdown(info, tty); |
174e6fe0 | 3201 | tty_port_hangup(&info->port); |
02f1175c | 3202 | } /* cy_hangup */ |
1da177e4 | 3203 | |
f0737579 JS |
3204 | static int cyy_carrier_raised(struct tty_port *port) |
3205 | { | |
3206 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3207 | port); | |
3208 | struct cyclades_card *cinfo = info->card; | |
3209 | void __iomem *base = cinfo->base_addr; | |
3210 | unsigned long flags; | |
3211 | int channel = info->line - cinfo->first_line; | |
3212 | int chip = channel >> 2, index = cinfo->bus_index; | |
3213 | u32 cd; | |
3214 | ||
3215 | channel &= 0x03; | |
3216 | base += cy_chip_offset[chip] << index; | |
3217 | ||
3218 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
3219 | cy_writeb(base + (CyCAR << index), (u8)channel); | |
3220 | cd = readb(base + (CyMSVR1 << index)) & CyDCD; | |
3221 | spin_unlock_irqrestore(&cinfo->card_lock, flags); | |
3222 | ||
3223 | return cd; | |
3224 | } | |
3225 | ||
3226 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
3227 | { | |
3228 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3229 | port); | |
3230 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 3231 | unsigned long flags; |
f0737579 JS |
3232 | |
3233 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
3234 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
3235 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
3236 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3237 | } | |
3238 | ||
3239 | static int cyz_carrier_raised(struct tty_port *port) | |
3240 | { | |
3241 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3242 | port); | |
f0737579 | 3243 | |
f0eefdc3 | 3244 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3245 | } |
3246 | ||
3247 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3248 | { | |
3249 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3250 | port); | |
3251 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3252 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3253 | int ret, channel = info->line - cinfo->first_line; |
3254 | u32 rs; | |
3255 | ||
f0eefdc3 | 3256 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3257 | if (raise) |
3258 | rs |= C_RS_RTS | C_RS_DTR; | |
3259 | else | |
3260 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3261 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3262 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3263 | if (ret != 0) | |
3264 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3265 | __func__, info->line, ret); | |
3266 | #ifdef CY_DEBUG_DTR | |
3267 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3268 | #endif | |
3269 | } | |
3270 | ||
3271 | static const struct tty_port_operations cyy_port_ops = { | |
3272 | .carrier_raised = cyy_carrier_raised, | |
3273 | .dtr_rts = cyy_dtr_rts, | |
3274 | }; | |
3275 | ||
3276 | static const struct tty_port_operations cyz_port_ops = { | |
3277 | .carrier_raised = cyz_carrier_raised, | |
3278 | .dtr_rts = cyz_dtr_rts, | |
3279 | }; | |
3280 | ||
1da177e4 LT |
3281 | /* |
3282 | * --------------------------------------------------------------------- | |
3283 | * cy_init() and friends | |
3284 | * | |
3285 | * cy_init() is called at boot-time to initialize the serial driver. | |
3286 | * --------------------------------------------------------------------- | |
3287 | */ | |
3288 | ||
dd025c0c | 3289 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3290 | { |
3291 | struct cyclades_port *info; | |
f0eefdc3 | 3292 | unsigned int channel, port; |
0809e267 | 3293 | |
3046d50e | 3294 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3295 | cinfo->intr_enabled = 0; |
3046d50e | 3296 | |
963118ee JS |
3297 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3298 | GFP_KERNEL); | |
dd025c0c JS |
3299 | if (cinfo->ports == NULL) { |
3300 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3301 | return -ENOMEM; | |
3302 | } | |
3303 | ||
f0eefdc3 JS |
3304 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3305 | channel++, port++) { | |
3306 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3307 | tty_port_init(&info->port); |
3046d50e | 3308 | info->magic = CYCLADES_MAGIC; |
875b206b | 3309 | info->card = cinfo; |
3046d50e | 3310 | info->line = port; |
3046d50e | 3311 | |
44b7d1b3 AC |
3312 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3313 | info->port.close_delay = 5 * HZ / 10; | |
77451e53 | 3314 | info->port.flags = STD_COM_FLAGS; |
2c7fea99 | 3315 | init_completion(&info->shutdown_wait); |
3046d50e JS |
3316 | init_waitqueue_head(&info->delta_msr_wait); |
3317 | ||
2693f485 | 3318 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3319 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3320 | struct ZFW_CTRL *zfw_ctrl; | |
3321 | ||
f0737579 | 3322 | info->port.ops = &cyz_port_ops; |
0809e267 | 3323 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3324 | |
3325 | zfw_ctrl = cinfo->base_addr + | |
3326 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3327 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3328 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3329 | ||
101b8159 | 3330 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3331 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3332 | else | |
3046d50e | 3333 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3334 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
3335 | setup_timer(&cyz_rx_full_timer[port], |
3336 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 3337 | #endif |
3046d50e | 3338 | } else { |
f0eefdc3 | 3339 | unsigned short chip_number; |
963118ee | 3340 | int index = cinfo->bus_index; |
f0eefdc3 | 3341 | |
f0737579 | 3342 | info->port.ops = &cyy_port_ops; |
0809e267 | 3343 | info->type = PORT_CIRRUS; |
0809e267 | 3344 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3345 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3346 | info->cor2 = CyETC; |
3347 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3348 | |
f0eefdc3 | 3349 | chip_number = channel / CyPORTS_PER_CHIP; |
15ed6cc0 AC |
3350 | info->chip_rev = readb(cinfo->base_addr + |
3351 | (cy_chip_offset[chip_number] << index) + | |
3352 | (CyGFRCR << index)); | |
3353 | ||
3354 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3355 | /* It is a CD1400 rev. J or later */ |
3356 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3357 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3358 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3359 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3360 | info->rtsdtr_inv = 1; |
3361 | } else { | |
3362 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3363 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3364 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3365 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3366 | info->rtsdtr_inv = 0; |
3367 | } | |
3046d50e JS |
3368 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3369 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3370 | } |
3046d50e | 3371 | |
0809e267 | 3372 | } |
3046d50e JS |
3373 | |
3374 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3375 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3376 | mod_timer(&cyz_timerlist, jiffies + 1); |
3377 | #ifdef CY_PCI_DEBUG | |
3378 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3379 | #endif | |
3380 | } | |
3381 | #endif | |
dd025c0c | 3382 | return 0; |
0809e267 JS |
3383 | } |
3384 | ||
1da177e4 LT |
3385 | /* initialize chips on Cyclom-Y card -- return number of valid |
3386 | chips (which is number of ports/4) */ | |
31b4f0a1 JS |
3387 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
3388 | int index) | |
1da177e4 | 3389 | { |
02f1175c JS |
3390 | unsigned int chip_number; |
3391 | void __iomem *base_addr; | |
3392 | ||
3393 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3394 | /* Cy_HwReset is 0x1400 */ | |
3395 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3396 | /* Cy_ClrIntr is 0x1800 */ | |
3397 | udelay(500L); | |
3398 | ||
15ed6cc0 AC |
3399 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3400 | chip_number++) { | |
02f1175c JS |
3401 | base_addr = |
3402 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3403 | mdelay(1); | |
db05c3b1 | 3404 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3405 | /************* |
3406 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3407 | chip_number, (unsigned long)base_addr); | |
3408 | *************/ | |
3409 | return chip_number; | |
3410 | } | |
3411 | ||
3412 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3413 | udelay(10L); | |
3414 | ||
3415 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3416 | cannot distinguish between references to chip 0 and a non- | |
3417 | existent chip 4. If the preceding clearing of the supposed | |
3418 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3419 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3420 | */ | |
db05c3b1 | 3421 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3422 | (cy_chip_offset[0] << index) + |
3423 | (CyGFRCR << index)) == 0) { | |
3424 | return chip_number; | |
3425 | } | |
3426 | ||
3427 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3428 | mdelay(1); | |
3429 | ||
db05c3b1 | 3430 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3431 | /* |
3432 | printk(" chip #%d at %#6lx is not responding ", | |
3433 | chip_number, (unsigned long)base_addr); | |
3434 | printk("(GFRCR stayed 0)\n", | |
3435 | */ | |
3436 | return chip_number; | |
3437 | } | |
db05c3b1 | 3438 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3439 | 0x40) { |
3440 | /* | |
3441 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3442 | "%#2x)\n", | |
3443 | chip_number, (unsigned long)base_addr, | |
3444 | base_addr[CyGFRCR<<index]); | |
3445 | */ | |
3446 | return chip_number; | |
3447 | } | |
3448 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3449 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3450 | /* It is a CD1400 rev. J or later */ |
3451 | /* Impossible to reach 5ms with this chip. | |
3452 | Changed to 2ms instead (f = 500 Hz). */ | |
3453 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3454 | } else { | |
3455 | /* f = 200 Hz */ | |
3456 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3457 | } | |
1da177e4 | 3458 | |
02f1175c JS |
3459 | /* |
3460 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3461 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3462 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3463 | */ |
3464 | } | |
3465 | return chip_number; | |
3466 | } /* cyy_init_card */ | |
1da177e4 LT |
3467 | |
3468 | /* | |
3469 | * --------------------------------------------------------------------- | |
3470 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3471 | * sets global variables and return the number of ISA boards found. | |
3472 | * --------------------------------------------------------------------- | |
3473 | */ | |
02f1175c | 3474 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3475 | { |
3476 | #ifdef CONFIG_ISA | |
02f1175c JS |
3477 | unsigned short cy_isa_irq, nboard; |
3478 | void __iomem *cy_isa_address; | |
3479 | unsigned short i, j, cy_isa_nchan; | |
1da177e4 | 3480 | #ifdef MODULE |
02f1175c | 3481 | int isparam = 0; |
1da177e4 LT |
3482 | #endif |
3483 | ||
02f1175c | 3484 | nboard = 0; |
1da177e4 LT |
3485 | |
3486 | #ifdef MODULE | |
3487 | /* Check for module parameters */ | |
02f1175c JS |
3488 | for (i = 0; i < NR_CARDS; i++) { |
3489 | if (maddr[i] || i) { | |
3490 | isparam = 1; | |
3491 | cy_isa_addresses[i] = maddr[i]; | |
3492 | } | |
3493 | if (!maddr[i]) | |
3494 | break; | |
1da177e4 LT |
3495 | } |
3496 | #endif | |
3497 | ||
02f1175c JS |
3498 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3499 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3500 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3501 | if (isa_address == 0x0000) |
096dcfce | 3502 | return nboard; |
1da177e4 | 3503 | |
02f1175c | 3504 | /* probe for CD1400... */ |
cd989b3a | 3505 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3506 | if (cy_isa_address == NULL) { |
3507 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3508 | "address\n"); | |
3509 | continue; | |
3510 | } | |
02f1175c JS |
3511 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3512 | cyy_init_card(cy_isa_address, 0); | |
3513 | if (cy_isa_nchan == 0) { | |
3137553d | 3514 | iounmap(cy_isa_address); |
02f1175c JS |
3515 | continue; |
3516 | } | |
1da177e4 LT |
3517 | #ifdef MODULE |
3518 | if (isparam && irq[i]) | |
02f1175c | 3519 | cy_isa_irq = irq[i]; |
1da177e4 LT |
3520 | else |
3521 | #endif | |
02f1175c JS |
3522 | /* find out the board's irq by probing */ |
3523 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3524 | if (cy_isa_irq == 0) { | |
21719191 JS |
3525 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3526 | "IRQ could not be detected.\n", | |
02f1175c | 3527 | (unsigned long)cy_isa_address); |
3137553d | 3528 | iounmap(cy_isa_address); |
02f1175c JS |
3529 | continue; |
3530 | } | |
3531 | ||
3532 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3533 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3534 | "more channels are available. Change NR_PORTS " | |
3535 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 3536 | (unsigned long)cy_isa_address); |
3137553d | 3537 | iounmap(cy_isa_address); |
096dcfce | 3538 | return nboard; |
02f1175c JS |
3539 | } |
3540 | /* fill the next cy_card structure available */ | |
3541 | for (j = 0; j < NR_CARDS; j++) { | |
f7429034 | 3542 | if (cy_card[j].base_addr == NULL) |
02f1175c JS |
3543 | break; |
3544 | } | |
3545 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3546 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3547 | "more cards can be used. Change NR_CARDS in " | |
3548 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3549 | (unsigned long)cy_isa_address); |
3137553d | 3550 | iounmap(cy_isa_address); |
096dcfce | 3551 | return nboard; |
02f1175c JS |
3552 | } |
3553 | ||
3554 | /* allocate IRQ */ | |
3555 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
3556 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { | |
21719191 JS |
3557 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3558 | "could not allocate IRQ#%d.\n", | |
3559 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3560 | iounmap(cy_isa_address); |
096dcfce | 3561 | return nboard; |
02f1175c JS |
3562 | } |
3563 | ||
3564 | /* set cy_card */ | |
3565 | cy_card[j].base_addr = cy_isa_address; | |
97e87f8e | 3566 | cy_card[j].ctl_addr.p9050 = NULL; |
02f1175c JS |
3567 | cy_card[j].irq = (int)cy_isa_irq; |
3568 | cy_card[j].bus_index = 0; | |
3569 | cy_card[j].first_line = cy_next_channel; | |
963118ee JS |
3570 | cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; |
3571 | cy_card[j].nports = cy_isa_nchan; | |
3137553d JS |
3572 | if (cy_init_card(&cy_card[j])) { |
3573 | cy_card[j].base_addr = NULL; | |
3574 | free_irq(cy_isa_irq, &cy_card[j]); | |
3575 | iounmap(cy_isa_address); | |
3576 | continue; | |
3577 | } | |
02f1175c JS |
3578 | nboard++; |
3579 | ||
21719191 JS |
3580 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3581 | "%d channels starting from port %d\n", | |
02f1175c JS |
3582 | j + 1, (unsigned long)cy_isa_address, |
3583 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3584 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3585 | ||
6ad1ccc1 JS |
3586 | for (j = cy_next_channel; |
3587 | j < cy_next_channel + cy_isa_nchan; j++) | |
3588 | tty_register_device(cy_serial_driver, j, NULL); | |
02f1175c JS |
3589 | cy_next_channel += cy_isa_nchan; |
3590 | } | |
096dcfce | 3591 | return nboard; |
1da177e4 | 3592 | #else |
096dcfce | 3593 | return 0; |
02f1175c JS |
3594 | #endif /* CONFIG_ISA */ |
3595 | } /* cy_detect_isa */ | |
1da177e4 | 3596 | |
58936d8d | 3597 | #ifdef CONFIG_PCI |
054f5b0a JS |
3598 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
3599 | { | |
3600 | unsigned int a; | |
3601 | ||
3602 | for (a = 0; a < size && *str; a++, str++) | |
3603 | if (*str & 0x80) | |
3604 | return -EINVAL; | |
3605 | ||
3606 | for (; a < size; a++, str++) | |
3607 | if (*str) | |
3608 | return -EINVAL; | |
3609 | ||
3610 | return 0; | |
3611 | } | |
3612 | ||
f61e761e | 3613 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3614 | unsigned int size) |
3615 | { | |
3616 | for (; size > 0; size--) { | |
3617 | cy_writel(fpga, *data++); | |
3618 | udelay(10); | |
3619 | } | |
3620 | } | |
3621 | ||
3622 | static void __devinit plx_init(struct pci_dev *pdev, int irq, | |
3623 | struct RUNTIME_9060 __iomem *addr) | |
1da177e4 | 3624 | { |
02f1175c | 3625 | /* Reset PLX */ |
054f5b0a | 3626 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3627 | udelay(100L); |
054f5b0a | 3628 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3629 | |
3630 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3631 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3632 | udelay(100L); |
054f5b0a JS |
3633 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3634 | ||
3635 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3636 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3637 | * registers. This will remain here until we find a permanent fix. | |
3638 | */ | |
3639 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3640 | } | |
3641 | ||
3642 | static int __devinit __cyz_load_fw(const struct firmware *fw, | |
3643 | const char *name, const u32 mailbox, void __iomem *base, | |
3644 | void __iomem *fpga) | |
3645 | { | |
f61e761e DW |
3646 | const void *ptr = fw->data; |
3647 | const struct zfile_header *h = ptr; | |
3648 | const struct zfile_config *c, *cs; | |
3649 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3650 | unsigned int a, tmp, len = fw->size; |
3651 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3652 | if (len < sizeof(*h)) { | |
3653 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3654 | return -EINVAL; | |
3655 | } | |
3656 | ||
3657 | cs = ptr + h->config_offset; | |
3658 | bs = ptr + h->block_offset; | |
3659 | ||
3660 | if ((void *)(cs + h->n_config) > ptr + len || | |
3661 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3662 | printk(BAD_FW "too short"); | |
3663 | return -EINVAL; | |
3664 | } | |
3665 | ||
3666 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3667 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3668 | printk(BAD_FW "bad formatted header string\n"); | |
3669 | return -EINVAL; | |
3670 | } | |
3671 | ||
3672 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3673 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3674 | return -EINVAL; | |
3675 | } | |
3676 | ||
3677 | tmp = 0; | |
3678 | for (c = cs; c < cs + h->n_config; c++) { | |
3679 | for (a = 0; a < c->n_blocks; a++) | |
3680 | if (c->block_list[a] > h->n_blocks) { | |
3681 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3682 | return -EINVAL; | |
3683 | } | |
3684 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3685 | tmp++; | |
3686 | } | |
3687 | if (!tmp) { | |
3688 | printk(BAD_FW "nothing appropriate\n"); | |
3689 | return -EINVAL; | |
3690 | } | |
3691 | ||
3692 | for (b = bs; b < bs + h->n_blocks; b++) | |
3693 | if (b->file_offset + b->size > len) { | |
3694 | printk(BAD_FW "bad block data offset\n"); | |
3695 | return -EINVAL; | |
3696 | } | |
3697 | ||
3698 | /* everything is OK, let's seek'n'load it */ | |
3699 | for (c = cs; c < cs + h->n_config; c++) | |
3700 | if (c->mailbox == mailbox && c->function == 0) | |
3701 | break; | |
3702 | ||
3703 | for (a = 0; a < c->n_blocks; a++) { | |
3704 | b = &bs[c->block_list[a]]; | |
3705 | if (b->type == ZBLOCK_FPGA) { | |
3706 | if (fpga != NULL) | |
3707 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3708 | b->size); | |
3709 | } else { | |
3710 | if (base != NULL) | |
3711 | memcpy_toio(base + b->ram_offset, | |
3712 | ptr + b->file_offset, b->size); | |
3713 | } | |
3714 | } | |
3715 | #undef BAD_FW | |
3716 | return 0; | |
3717 | } | |
3718 | ||
3719 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, | |
3720 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) | |
3721 | { | |
3722 | const struct firmware *fw; | |
3723 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3724 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3725 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3726 | void __iomem *tmp; |
963118ee | 3727 | u32 mailbox, status, nchan; |
054f5b0a JS |
3728 | unsigned int i; |
3729 | int retval; | |
3730 | ||
3731 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3732 | if (retval) { | |
3733 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3734 | goto err; | |
3735 | } | |
3736 | ||
3737 | /* Check whether the firmware is already loaded and running. If | |
3738 | positive, skip this board */ | |
2693f485 | 3739 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3740 | u32 cntval = readl(base_addr + 0x190); |
3741 | ||
3742 | udelay(100); | |
3743 | if (cntval != readl(base_addr + 0x190)) { | |
3744 | /* FW counter is working, FW is running */ | |
3745 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3746 | "Skipping board.\n"); | |
3747 | retval = 0; | |
3748 | goto err_rel; | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | /* start boot */ | |
3753 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3754 | ~0x00030800UL); | |
3755 | ||
3756 | mailbox = readl(&ctl_addr->mail_box_0); | |
3757 | ||
2693f485 | 3758 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3759 | /* stops CPU and set window to beginning of RAM */ |
3760 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3761 | cy_writel(&cust->cpu_stop, 0); | |
3762 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3763 | udelay(100); | |
3764 | } | |
3765 | ||
3766 | plx_init(pdev, irq, ctl_addr); | |
3767 | ||
3768 | if (mailbox != 0) { | |
3769 | /* load FPGA */ | |
3770 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3771 | base_addr); | |
3772 | if (retval) | |
3773 | goto err_rel; | |
2693f485 | 3774 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3775 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3776 | "not loaded\n"); | |
3777 | goto err_rel; | |
3778 | } | |
3779 | } | |
3780 | ||
3781 | /* stops CPU and set window to beginning of RAM */ | |
3782 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3783 | cy_writel(&cust->cpu_stop, 0); | |
3784 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3785 | udelay(100); | |
3786 | ||
3787 | /* clear memory */ | |
c4923b4f | 3788 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3789 | cy_writeb(tmp, 255); |
3790 | if (mailbox != 0) { | |
3791 | /* set window to last 512K of RAM */ | |
3792 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3793 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3794 | cy_writeb(tmp, 255); |
3795 | /* set window to beginning of RAM */ | |
3796 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3797 | } |
3798 | ||
3799 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3800 | release_firmware(fw); | |
3801 | if (retval) | |
3802 | goto err; | |
3803 | ||
3804 | /* finish boot and start boards */ | |
3805 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3806 | cy_writel(&cust->cpu_start, 0); | |
3807 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3808 | i = 0; | |
3809 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3810 | msleep(100); | |
3811 | if (status != ZFIRM_ID) { | |
3812 | if (status == ZFIRM_HLT) { | |
3813 | dev_err(&pdev->dev, "you need an external power supply " | |
3814 | "for this number of ports. Firmware halted and " | |
3815 | "board reset.\n"); | |
3816 | retval = -EIO; | |
3817 | goto err; | |
3818 | } | |
3819 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3820 | "some more time\n", status); | |
3821 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3822 | i++ < 200) | |
3823 | msleep(100); | |
3824 | if (status != ZFIRM_ID) { | |
3825 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3826 | "Giving up. (fid->signature = 0x%x)\n", | |
3827 | status); | |
3828 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3829 | "upgrading the FW, please power cycle the " | |
3830 | "system before loading the new FW to the " | |
3831 | "Cyclades-Z.\n"); | |
3832 | ||
2693f485 | 3833 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3834 | plx_init(pdev, irq, ctl_addr); |
3835 | ||
3836 | retval = -EIO; | |
3837 | goto err; | |
3838 | } | |
3839 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3840 | i / 10); | |
3841 | } | |
3842 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3843 | ||
3844 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3845 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3846 | base_addr + readl(&fid->zfwctrl_addr)); | |
3847 | ||
963118ee | 3848 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3849 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3850 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3851 | |
963118ee | 3852 | if (nchan == 0) { |
054f5b0a JS |
3853 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3854 | "check the connection between the Z host card and the " | |
3855 | "serial expanders.\n"); | |
3856 | ||
2693f485 | 3857 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3858 | plx_init(pdev, irq, ctl_addr); |
3859 | ||
3860 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3861 | "reset.\n"); | |
3862 | retval = 0; | |
3863 | goto err; | |
3864 | } | |
3865 | ||
3866 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3867 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3868 | ||
3869 | /* | |
3870 | Early firmware failed to start looking for commands. | |
3871 | This enables firmware interrupts for those commands. | |
3872 | */ | |
3873 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3874 | (1 << 17)); | |
3875 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3876 | 0x00030800UL); | |
3877 | ||
963118ee | 3878 | return nchan; |
054f5b0a JS |
3879 | err_rel: |
3880 | release_firmware(fw); | |
3881 | err: | |
3882 | return retval; | |
1da177e4 LT |
3883 | } |
3884 | ||
58936d8d JS |
3885 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
3886 | const struct pci_device_id *ent) | |
1da177e4 | 3887 | { |
3137553d JS |
3888 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3889 | char *card_name = NULL; | |
101b8159 | 3890 | u32 uninitialized_var(mailbox); |
3137553d JS |
3891 | unsigned int device_id, nchan = 0, card_no, i; |
3892 | unsigned char plx_ver; | |
3893 | int retval, irq; | |
02f1175c | 3894 | |
58936d8d JS |
3895 | retval = pci_enable_device(pdev); |
3896 | if (retval) { | |
3897 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3898 | goto err; |
58936d8d | 3899 | } |
1da177e4 | 3900 | |
58936d8d | 3901 | /* read PCI configuration area */ |
3137553d | 3902 | irq = pdev->irq; |
58936d8d | 3903 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3904 | |
3137553d JS |
3905 | #if defined(__alpha__) |
3906 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3907 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3908 | "addresses on Alpha systems.\n"); | |
3909 | retval = -EIO; | |
3910 | goto err_dis; | |
3911 | } | |
3912 | #endif | |
3913 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3914 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3915 | "addresses\n"); | |
3916 | retval = -EIO; | |
3917 | goto err_dis; | |
3918 | } | |
3919 | ||
3920 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3921 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3922 | "it...\n"); | |
3923 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3924 | } | |
3925 | ||
3926 | retval = pci_request_regions(pdev, "cyclades"); | |
3927 | if (retval) { | |
3928 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3929 | goto err_dis; | |
3930 | } | |
3931 | ||
3932 | retval = -EIO; | |
58936d8d JS |
3933 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3934 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3935 | card_name = "Cyclom-Y"; |
1da177e4 | 3936 | |
24e6fd4c JS |
3937 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3938 | CyPCI_Yctl); | |
3137553d JS |
3939 | if (addr0 == NULL) { |
3940 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3941 | goto err_reg; | |
58936d8d | 3942 | } |
24e6fd4c JS |
3943 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3944 | CyPCI_Ywin); | |
3137553d JS |
3945 | if (addr2 == NULL) { |
3946 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3947 | goto err_unmap; | |
58936d8d | 3948 | } |
1da177e4 | 3949 | |
3137553d JS |
3950 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3951 | if (nchan == 0) { | |
21719191 JS |
3952 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3953 | "Serial-Modules\n"); | |
c847d47c | 3954 | goto err_unmap; |
58936d8d | 3955 | } |
58936d8d | 3956 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3957 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3958 | |
24e6fd4c JS |
3959 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3960 | CyPCI_Zctl); | |
3137553d JS |
3961 | if (addr0 == NULL) { |
3962 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3963 | goto err_reg; | |
3964 | } | |
58936d8d JS |
3965 | |
3966 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3967 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3968 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3969 | |
054f5b0a | 3970 | plx_init(pdev, irq, addr0); |
02f1175c | 3971 | |
101b8159 | 3972 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3973 | |
24e6fd4c JS |
3974 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3975 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3976 | if (addr2 == NULL) { |
3977 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3978 | goto err_unmap; | |
58936d8d JS |
3979 | } |
3980 | ||
3981 | if (mailbox == ZE_V1) { | |
3137553d | 3982 | card_name = "Cyclades-Ze"; |
58936d8d | 3983 | } else { |
3137553d | 3984 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3985 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3986 | if (mailbox == ZO_V1) { |
3987 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3988 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3989 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3990 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3991 | fpga_id)), (ulong)(0xff & | |
3992 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3993 | fpga_version))); | |
3994 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3995 | } else { | |
3996 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3997 | "Cyclades-Z board. FPGA not loaded\n"); | |
3998 | } | |
1da177e4 | 3999 | #endif |
3137553d JS |
4000 | /* The following clears the firmware id word. This |
4001 | ensures that the driver will not attempt to talk to | |
4002 | the board until it has been properly initialized. | |
4003 | */ | |
4004 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
4005 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 4006 | } |
ace08c3c JS |
4007 | |
4008 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 4009 | if (retval <= 0) |
ace08c3c | 4010 | goto err_unmap; |
963118ee | 4011 | nchan = retval; |
3137553d JS |
4012 | } |
4013 | ||
4014 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
4015 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
4016 | "channels are available. Change NR_PORTS in " | |
4017 | "cyclades.c and recompile kernel.\n"); | |
4018 | goto err_unmap; | |
4019 | } | |
4020 | /* fill the next cy_card structure available */ | |
4021 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
4022 | if (cy_card[card_no].base_addr == NULL) | |
4023 | break; | |
4024 | } | |
4025 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
4026 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
4027 | "more cards can be used. Change NR_CARDS in " | |
4028 | "cyclades.c and recompile kernel.\n"); | |
4029 | goto err_unmap; | |
4030 | } | |
4031 | ||
4032 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
4033 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
4034 | /* allocate IRQ */ | |
4035 | retval = request_irq(irq, cyy_interrupt, | |
4036 | IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); | |
4037 | if (retval) { | |
4038 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
4039 | goto err_unmap; | |
58936d8d | 4040 | } |
963118ee | 4041 | cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 4042 | } else { |
f0eefdc3 JS |
4043 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
4044 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
4045 | ||
4046 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
4047 | ||
101b8159 JS |
4048 | cy_card[card_no].hw_ver = mailbox; |
4049 | cy_card[card_no].num_chips = (unsigned int)-1; | |
f0eefdc3 | 4050 | cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; |
02f1175c | 4051 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 4052 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
4053 | if (irq != 0 && irq != 255) { |
4054 | retval = request_irq(irq, cyz_interrupt, | |
58936d8d | 4055 | IRQF_SHARED, "Cyclades-Z", |
3137553d | 4056 | &cy_card[card_no]); |
58936d8d | 4057 | if (retval) { |
21719191 | 4058 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 4059 | goto err_unmap; |
02f1175c | 4060 | } |
58936d8d | 4061 | } |
02f1175c | 4062 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 4063 | } |
02f1175c | 4064 | |
3137553d JS |
4065 | /* set cy_card */ |
4066 | cy_card[card_no].base_addr = addr2; | |
97e87f8e | 4067 | cy_card[card_no].ctl_addr.p9050 = addr0; |
3137553d JS |
4068 | cy_card[card_no].irq = irq; |
4069 | cy_card[card_no].bus_index = 1; | |
4070 | cy_card[card_no].first_line = cy_next_channel; | |
963118ee | 4071 | cy_card[card_no].nports = nchan; |
3137553d JS |
4072 | retval = cy_init_card(&cy_card[card_no]); |
4073 | if (retval) | |
4074 | goto err_null; | |
58936d8d | 4075 | |
3137553d | 4076 | pci_set_drvdata(pdev, &cy_card[card_no]); |
58936d8d | 4077 | |
3137553d JS |
4078 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
4079 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
4080 | /* enable interrupts in the PCI interface */ | |
4081 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
4082 | switch (plx_ver) { | |
4083 | case PLX_9050: | |
3137553d JS |
4084 | cy_writeb(addr0 + 0x4c, 0x43); |
4085 | break; | |
4086 | ||
4087 | case PLX_9060: | |
4088 | case PLX_9080: | |
4089 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
4090 | { |
4091 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
4092 | plx_init(pdev, irq, ctl_addr); | |
4093 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
4094 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
4095 | break; |
4096 | } | |
97e87f8e | 4097 | } |
58936d8d JS |
4098 | } |
4099 | ||
3137553d JS |
4100 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
4101 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
4102 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) | |
4103 | tty_register_device(cy_serial_driver, i, &pdev->dev); | |
4104 | cy_next_channel += nchan; | |
4105 | ||
58936d8d | 4106 | return 0; |
3137553d JS |
4107 | err_null: |
4108 | cy_card[card_no].base_addr = NULL; | |
4109 | free_irq(irq, &cy_card[card_no]); | |
4110 | err_unmap: | |
24e6fd4c | 4111 | iounmap(addr0); |
3137553d | 4112 | if (addr2) |
24e6fd4c | 4113 | iounmap(addr2); |
3137553d JS |
4114 | err_reg: |
4115 | pci_release_regions(pdev); | |
4116 | err_dis: | |
4117 | pci_disable_device(pdev); | |
4118 | err: | |
4119 | return retval; | |
58936d8d | 4120 | } |
58936d8d | 4121 | |
6747cd93 | 4122 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 4123 | { |
38d09093 | 4124 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
f3851e73 | 4125 | unsigned int i; |
38d09093 | 4126 | |
85c93fa9 | 4127 | /* non-Z with old PLX */ |
2693f485 | 4128 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 4129 | PLX_9050) |
97e87f8e | 4130 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
4131 | else |
4132 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 4133 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 4134 | #endif |
97e87f8e JS |
4135 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
4136 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
4137 | ~0x0900); | |
85c93fa9 | 4138 | |
24e6fd4c | 4139 | iounmap(cinfo->base_addr); |
97e87f8e JS |
4140 | if (cinfo->ctl_addr.p9050) |
4141 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
4142 | if (cinfo->irq |
4143 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 4144 | && !cy_is_Z(cinfo) |
38d09093 JS |
4145 | #endif /* CONFIG_CYZ_INTR */ |
4146 | ) | |
4147 | free_irq(cinfo->irq, cinfo); | |
4148 | pci_release_regions(pdev); | |
4149 | ||
4150 | cinfo->base_addr = NULL; | |
6ad1ccc1 JS |
4151 | for (i = cinfo->first_line; i < cinfo->first_line + |
4152 | cinfo->nports; i++) | |
4153 | tty_unregister_device(cy_serial_driver, i); | |
dd025c0c JS |
4154 | cinfo->nports = 0; |
4155 | kfree(cinfo->ports); | |
38d09093 JS |
4156 | } |
4157 | ||
6747cd93 JS |
4158 | static struct pci_driver cy_pci_driver = { |
4159 | .name = "cyclades", | |
4160 | .id_table = cy_pci_dev_id, | |
4161 | .probe = cy_pci_probe, | |
4162 | .remove = __devexit_p(cy_pci_remove) | |
4163 | }; | |
4164 | #endif | |
4165 | ||
444697d6 | 4166 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 4167 | { |
02f1175c | 4168 | struct cyclades_port *info; |
dd025c0c | 4169 | unsigned int i, j; |
02f1175c JS |
4170 | __u32 cur_jifs = jiffies; |
4171 | ||
444697d6 | 4172 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
4173 | "IdleIn Overruns Ldisc\n"); |
4174 | ||
02f1175c | 4175 | /* Output one line for each known port */ |
dd025c0c JS |
4176 | for (i = 0; i < NR_CARDS; i++) |
4177 | for (j = 0; j < cy_card[i].nports; j++) { | |
4178 | info = &cy_card[i].ports[j]; | |
4179 | ||
d13549f8 JS |
4180 | if (info->port.count) { |
4181 | /* XXX is the ldisc num worth this? */ | |
4182 | struct tty_struct *tty; | |
4183 | struct tty_ldisc *ld; | |
4184 | int num = 0; | |
4185 | tty = tty_port_tty_get(&info->port); | |
4186 | if (tty) { | |
4187 | ld = tty_ldisc_ref(tty); | |
4188 | if (ld) { | |
4189 | num = ld->ops->num; | |
4190 | tty_ldisc_deref(ld); | |
4191 | } | |
4192 | tty_kref_put(tty); | |
4193 | } | |
444697d6 | 4194 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 4195 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
4196 | (cur_jifs - info->idle_stats.in_use) / |
4197 | HZ, info->idle_stats.xmit_bytes, | |
4198 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
4199 | HZ, info->idle_stats.recv_bytes, | |
4200 | (cur_jifs - info->idle_stats.recv_idle)/ | |
4201 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
4202 | num); |
4203 | } else | |
444697d6 | 4204 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
4205 | "%10lu %8lu %9lu %6ld\n", |
4206 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 4207 | } |
444697d6 AD |
4208 | return 0; |
4209 | } | |
4210 | ||
4211 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
4212 | { | |
4213 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
4214 | } |
4215 | ||
444697d6 AD |
4216 | static const struct file_operations cyclades_proc_fops = { |
4217 | .owner = THIS_MODULE, | |
4218 | .open = cyclades_proc_open, | |
4219 | .read = seq_read, | |
4220 | .llseek = seq_lseek, | |
4221 | .release = single_release, | |
4222 | }; | |
4223 | ||
1da177e4 LT |
4224 | /* The serial driver boot-time initialization code! |
4225 | Hardware I/O ports are mapped to character special devices on a | |
4226 | first found, first allocated manner. That is, this code searches | |
4227 | for Cyclom cards in the system. As each is found, it is probed | |
4228 | to discover how many chips (and thus how many ports) are present. | |
4229 | These ports are mapped to the tty ports 32 and upward in monotonic | |
4230 | fashion. If an 8-port card is replaced with a 16-port card, the | |
4231 | port mapping on a following card will shift. | |
4232 | ||
4233 | This approach is different from what is used in the other serial | |
4234 | device driver because the Cyclom is more properly a multiplexer, | |
4235 | not just an aggregation of serial ports on one card. | |
4236 | ||
4237 | If there are more cards with more ports than have been | |
4238 | statically allocated above, a warning is printed and the | |
4239 | extra ports are ignored. | |
4240 | */ | |
4241 | ||
b68e31d0 | 4242 | static const struct tty_operations cy_ops = { |
02f1175c JS |
4243 | .open = cy_open, |
4244 | .close = cy_close, | |
4245 | .write = cy_write, | |
4246 | .put_char = cy_put_char, | |
4247 | .flush_chars = cy_flush_chars, | |
4248 | .write_room = cy_write_room, | |
4249 | .chars_in_buffer = cy_chars_in_buffer, | |
4250 | .flush_buffer = cy_flush_buffer, | |
4251 | .ioctl = cy_ioctl, | |
4252 | .throttle = cy_throttle, | |
4253 | .unthrottle = cy_unthrottle, | |
4254 | .set_termios = cy_set_termios, | |
4255 | .stop = cy_stop, | |
4256 | .start = cy_start, | |
4257 | .hangup = cy_hangup, | |
4258 | .break_ctl = cy_break, | |
4259 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4260 | .tiocmget = cy_tiocmget, |
4261 | .tiocmset = cy_tiocmset, | |
444697d6 | 4262 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
4263 | }; |
4264 | ||
02f1175c | 4265 | static int __init cy_init(void) |
1da177e4 | 4266 | { |
dd025c0c | 4267 | unsigned int nboards; |
9dacf3b2 | 4268 | int retval = -ENOMEM; |
02f1175c JS |
4269 | |
4270 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4271 | if (!cy_serial_driver) | |
9dacf3b2 | 4272 | goto err; |
21719191 JS |
4273 | |
4274 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", | |
4275 | __DATE__, __TIME__); | |
02f1175c JS |
4276 | |
4277 | /* Initialize the tty_driver structure */ | |
4278 | ||
4279 | cy_serial_driver->owner = THIS_MODULE; | |
4280 | cy_serial_driver->driver_name = "cyclades"; | |
4281 | cy_serial_driver->name = "ttyC"; | |
4282 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4283 | cy_serial_driver->minor_start = 0; | |
4284 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4285 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4286 | cy_serial_driver->init_termios = tty_std_termios; | |
4287 | cy_serial_driver->init_termios.c_cflag = | |
4288 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4289 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4290 | tty_set_operations(cy_serial_driver, &cy_ops); |
4291 | ||
9dacf3b2 JS |
4292 | retval = tty_register_driver(cy_serial_driver); |
4293 | if (retval) { | |
4294 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4295 | goto err_frtty; | |
4296 | } | |
02f1175c | 4297 | |
02f1175c JS |
4298 | /* the code below is responsible to find the boards. Each different |
4299 | type of board has its own detection routine. If a board is found, | |
4300 | the next cy_card structure available is set by the detection | |
4301 | routine. These functions are responsible for checking the | |
4302 | availability of cy_card and cy_port data structures and updating | |
4303 | the cy_next_channel. */ | |
4304 | ||
4305 | /* look for isa boards */ | |
14a55a67 | 4306 | nboards = cy_detect_isa(); |
02f1175c | 4307 | |
6747cd93 | 4308 | #ifdef CONFIG_PCI |
02f1175c | 4309 | /* look for pci boards */ |
6747cd93 | 4310 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4311 | if (retval && !nboards) { |
4312 | tty_unregister_driver(cy_serial_driver); | |
4313 | goto err_frtty; | |
4314 | } | |
6747cd93 | 4315 | #endif |
9dacf3b2 JS |
4316 | |
4317 | return 0; | |
9dacf3b2 JS |
4318 | err_frtty: |
4319 | put_tty_driver(cy_serial_driver); | |
4320 | err: | |
4321 | return retval; | |
02f1175c | 4322 | } /* cy_init */ |
1da177e4 | 4323 | |
02f1175c | 4324 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4325 | { |
dd025c0c | 4326 | struct cyclades_card *card; |
65f76a82 | 4327 | unsigned int i, e1; |
1da177e4 LT |
4328 | |
4329 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4330 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4331 | #endif /* CONFIG_CYZ_INTR */ |
4332 | ||
15ed6cc0 AC |
4333 | e1 = tty_unregister_driver(cy_serial_driver); |
4334 | if (e1) | |
21719191 JS |
4335 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4336 | "driver(%d)\n", e1); | |
1da177e4 | 4337 | |
6747cd93 JS |
4338 | #ifdef CONFIG_PCI |
4339 | pci_unregister_driver(&cy_pci_driver); | |
4340 | #endif | |
4341 | ||
02f1175c | 4342 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4343 | card = &cy_card[i]; |
4344 | if (card->base_addr) { | |
85c93fa9 | 4345 | /* clear interrupt */ |
dd025c0c JS |
4346 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4347 | iounmap(card->base_addr); | |
97e87f8e JS |
4348 | if (card->ctl_addr.p9050) |
4349 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4350 | if (card->irq |
1da177e4 | 4351 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4352 | && !cy_is_Z(card) |
1da177e4 | 4353 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4354 | ) |
dd025c0c | 4355 | free_irq(card->irq, card); |
65f76a82 | 4356 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4357 | card->nports; e1++) |
6ad1ccc1 | 4358 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4359 | kfree(card->ports); |
02f1175c JS |
4360 | } |
4361 | } | |
f2462bfe JS |
4362 | |
4363 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4364 | } /* cy_cleanup_module */ |
4365 | ||
4366 | module_init(cy_init); | |
4367 | module_exit(cy_cleanup_module); | |
4368 | ||
4369 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4370 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4371 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |