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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 | /* | |
1da177e4 LT |
6 | * This file contains the driver for the Cyclades async multiport |
7 | * serial boards. | |
8 | * | |
9 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. | |
10 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. | |
1da177e4 | 11 | * |
ebdb5135 | 12 | * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com> |
1da177e4 LT |
13 | * |
14 | * Much of the design and some of the code came from serial.c | |
15 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was | |
16 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, | |
17 | * and then fixed as suggested by Michael K. Johnson 12/12/92. | |
c8e1693a | 18 | * Converted to pci probing and cleaned up by Jiri Slaby. |
1da177e4 | 19 | * |
1da177e4 LT |
20 | */ |
21 | ||
ebdb5135 | 22 | #define CY_VERSION "2.6" |
096dcfce | 23 | |
1da177e4 LT |
24 | /* If you need to install more boards than NR_CARDS, change the constant |
25 | in the definition below. No other change is necessary to support up to | |
26 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ | |
27 | ||
02f1175c | 28 | #define NR_CARDS 4 |
1da177e4 LT |
29 | |
30 | /* | |
31 | If the total number of ports is larger than NR_PORTS, change this | |
32 | constant in the definition below. No other change is necessary to | |
33 | support more boards/ports. */ | |
34 | ||
02f1175c | 35 | #define NR_PORTS 256 |
1da177e4 | 36 | |
1da177e4 LT |
37 | #define ZO_V1 0 |
38 | #define ZO_V2 1 | |
39 | #define ZE_V1 2 | |
40 | ||
41 | #define SERIAL_PARANOIA_CHECK | |
42 | #undef CY_DEBUG_OPEN | |
43 | #undef CY_DEBUG_THROTTLE | |
44 | #undef CY_DEBUG_OTHER | |
45 | #undef CY_DEBUG_IO | |
46 | #undef CY_DEBUG_COUNT | |
47 | #undef CY_DEBUG_DTR | |
1da177e4 LT |
48 | #undef CY_DEBUG_INTERRUPTS |
49 | #undef CY_16Y_HACK | |
50 | #undef CY_ENABLE_MONITORING | |
51 | #undef CY_PCI_DEBUG | |
52 | ||
1da177e4 | 53 | /* |
15ed6cc0 | 54 | * Include section |
1da177e4 | 55 | */ |
1da177e4 LT |
56 | #include <linux/module.h> |
57 | #include <linux/errno.h> | |
58 | #include <linux/signal.h> | |
59 | #include <linux/sched.h> | |
60 | #include <linux/timer.h> | |
61 | #include <linux/interrupt.h> | |
62 | #include <linux/tty.h> | |
33f0f88f | 63 | #include <linux/tty_flip.h> |
1da177e4 LT |
64 | #include <linux/serial.h> |
65 | #include <linux/major.h> | |
66 | #include <linux/string.h> | |
67 | #include <linux/fcntl.h> | |
68 | #include <linux/ptrace.h> | |
69 | #include <linux/cyclades.h> | |
70 | #include <linux/mm.h> | |
71 | #include <linux/ioport.h> | |
72 | #include <linux/init.h> | |
73 | #include <linux/delay.h> | |
74 | #include <linux/spinlock.h> | |
75 | #include <linux/bitops.h> | |
054f5b0a | 76 | #include <linux/firmware.h> |
9f56fad7 | 77 | #include <linux/device.h> |
5a0e3ad6 | 78 | #include <linux/slab.h> |
1da177e4 | 79 | |
15ed6cc0 | 80 | #include <linux/io.h> |
15ed6cc0 | 81 | #include <linux/uaccess.h> |
1da177e4 | 82 | |
1da177e4 LT |
83 | #include <linux/kernel.h> |
84 | #include <linux/pci.h> | |
85 | ||
86 | #include <linux/stat.h> | |
87 | #include <linux/proc_fs.h> | |
444697d6 | 88 | #include <linux/seq_file.h> |
1da177e4 | 89 | |
02f1175c | 90 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
1da177e4 | 91 | |
1da177e4 LT |
92 | #ifndef SERIAL_XMIT_SIZE |
93 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) | |
94 | #endif | |
1da177e4 | 95 | |
054f5b0a JS |
96 | /* firmware stuff */ |
97 | #define ZL_MAX_BLOCKS 16 | |
98 | #define DRIVER_VERSION 0x02010203 | |
99 | #define RAM_SIZE 0x80000 | |
100 | ||
054f5b0a JS |
101 | enum zblock_type { |
102 | ZBLOCK_PRG = 0, | |
103 | ZBLOCK_FPGA = 1 | |
104 | }; | |
105 | ||
106 | struct zfile_header { | |
107 | char name[64]; | |
108 | char date[32]; | |
109 | char aux[32]; | |
110 | u32 n_config; | |
111 | u32 config_offset; | |
112 | u32 n_blocks; | |
113 | u32 block_offset; | |
114 | u32 reserved[9]; | |
115 | } __attribute__ ((packed)); | |
116 | ||
117 | struct zfile_config { | |
118 | char name[64]; | |
119 | u32 mailbox; | |
120 | u32 function; | |
121 | u32 n_blocks; | |
122 | u32 block_list[ZL_MAX_BLOCKS]; | |
123 | } __attribute__ ((packed)); | |
124 | ||
125 | struct zfile_block { | |
126 | u32 type; | |
127 | u32 file_offset; | |
128 | u32 ram_offset; | |
129 | u32 size; | |
130 | } __attribute__ ((packed)); | |
131 | ||
1da177e4 LT |
132 | static struct tty_driver *cy_serial_driver; |
133 | ||
134 | #ifdef CONFIG_ISA | |
135 | /* This is the address lookup table. The driver will probe for | |
136 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
137 | driver to probe addresses at a different address, add it to | |
138 | this table. If the driver is probing some other board and | |
139 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
140 | */ |
141 | ||
142 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
143 | 0xD0000, |
144 | 0xD2000, | |
145 | 0xD4000, | |
146 | 0xD6000, | |
147 | 0xD8000, | |
148 | 0xDA000, | |
149 | 0xDC000, | |
150 | 0xDE000, | |
151 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 152 | }; |
02f1175c | 153 | |
fe971071 | 154 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 | 155 | |
3046d50e JS |
156 | static long maddr[NR_CARDS]; |
157 | static int irq[NR_CARDS]; | |
1da177e4 LT |
158 | |
159 | module_param_array(maddr, long, NULL, 0); | |
160 | module_param_array(irq, int, NULL, 0); | |
1da177e4 | 161 | |
02f1175c | 162 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
163 | |
164 | /* This is the per-card data structure containing address, irq, number of | |
165 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
166 | */ | |
167 | static struct cyclades_card cy_card[NR_CARDS]; | |
168 | ||
02f1175c | 169 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 170 | |
1da177e4 LT |
171 | /* |
172 | * This is used to look up the divisor speeds and the timeouts | |
173 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 174 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
175 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
176 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
177 | * HI VHI | |
178 | * 20 | |
179 | */ | |
ebdb5135 | 180 | static const int baud_table[] = { |
02f1175c JS |
181 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
182 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
183 | 230400, 0 | |
184 | }; | |
185 | ||
ebdb5135 | 186 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
187 | /* value => 00 01 02 03 04 */ |
188 | /* divide by 8 32 128 512 2048 */ | |
189 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
190 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
191 | }; | |
192 | ||
ebdb5135 | 193 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
194 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
195 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
196 | }; | |
197 | ||
ebdb5135 | 198 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
199 | /* value => 00 01 02 03 04 */ |
200 | /* divide by 8 32 128 512 2048 */ | |
201 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
202 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
203 | 0x00 | |
204 | }; | |
205 | ||
ebdb5135 | 206 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
207 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
208 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
209 | 0x21 | |
210 | }; | |
211 | ||
ebdb5135 | 212 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
213 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
214 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
215 | 0x07 | |
216 | }; | |
1da177e4 LT |
217 | |
218 | /* | |
219 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
220 | * The cyclades_port structure member rflow and the vector rflow_thr |
221 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
222 | * data loss even when the system interrupt latency is too high. These flags | |
223 | * are to be used only with very special applications. Setting these flags | |
224 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
225 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
226 | * cables. |
227 | */ | |
228 | ||
ebdb5135 | 229 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
230 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
231 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
232 | 0x0a | |
233 | }; | |
1da177e4 LT |
234 | |
235 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
236 | * address order. This look-up table overcomes that problem. | |
237 | */ | |
f0eefdc3 | 238 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
239 | 0x0400, |
240 | 0x0800, | |
241 | 0x0C00, | |
242 | 0x0200, | |
243 | 0x0600, | |
244 | 0x0A00, | |
245 | 0x0E00 | |
246 | }; | |
1da177e4 LT |
247 | |
248 | /* PCI related definitions */ | |
249 | ||
1da177e4 | 250 | #ifdef CONFIG_PCI |
ebdb5135 | 251 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
252 | /* PCI < 1Mb */ |
253 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
254 | /* PCI > 1Mb */ | |
255 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
256 | /* 4Y PCI < 1Mb */ | |
257 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
258 | /* 4Y PCI > 1Mb */ | |
259 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
260 | /* 8Y PCI < 1Mb */ | |
261 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
262 | /* 8Y PCI > 1Mb */ | |
263 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
264 | /* Z PCI < 1Mb */ | |
265 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
266 | /* Z PCI > 1Mb */ | |
267 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 268 | { } /* end of table */ |
02f1175c | 269 | }; |
893de2df | 270 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
271 | #endif |
272 | ||
273 | static void cy_start(struct tty_struct *); | |
d13549f8 | 274 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 275 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
276 | #ifdef CONFIG_ISA |
277 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 278 | #endif /* CONFIG_ISA */ |
1da177e4 | 279 | |
1da177e4 LT |
280 | #ifndef CONFIG_CYZ_INTR |
281 | static void cyz_poll(unsigned long); | |
282 | ||
283 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
284 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
285 | ||
8d06afab | 286 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 287 | |
02f1175c | 288 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
289 | static void cyz_rx_restart(unsigned long); |
290 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 291 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 292 | |
f25d596f | 293 | static void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
3aeea5b9 JS |
294 | { |
295 | struct cyclades_card *card = port->card; | |
296 | ||
297 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); | |
298 | } | |
299 | ||
f88d8683 | 300 | static u8 cyy_readb(struct cyclades_port *port, u32 reg) |
3aeea5b9 JS |
301 | { |
302 | struct cyclades_card *card = port->card; | |
303 | ||
304 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); | |
305 | } | |
306 | ||
2693f485 JS |
307 | static inline bool cy_is_Z(struct cyclades_card *card) |
308 | { | |
309 | return card->num_chips == (unsigned int)-1; | |
310 | } | |
311 | ||
312 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
313 | { | |
314 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
315 | } | |
316 | ||
317 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
318 | { | |
319 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
320 | } | |
321 | ||
1c82363e | 322 | static bool cyz_is_loaded(struct cyclades_card *card) |
2693f485 JS |
323 | { |
324 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
325 | ||
326 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
327 | readl(&fw_id->signature) == ZFIRM_ID; | |
328 | } | |
329 | ||
8c6ba003 | 330 | static int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 331 | const char *name, const char *routine) |
1da177e4 LT |
332 | { |
333 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 334 | if (!info) { |
21719191 JS |
335 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
336 | "in %s\n", name, routine); | |
02f1175c JS |
337 | return 1; |
338 | } | |
339 | ||
02f1175c | 340 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
341 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
342 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
343 | return 1; |
344 | } | |
1da177e4 | 345 | #endif |
02f1175c | 346 | return 0; |
ebdb5135 | 347 | } |
1da177e4 | 348 | |
1da177e4 LT |
349 | /***********************************************************/ |
350 | /********* Start of block of Cyclom-Y specific code ********/ | |
351 | ||
352 | /* This routine waits up to 1000 micro-seconds for the previous | |
353 | command to the Cirrus chip to complete and then issues the | |
354 | new command. An error is returned if the previous command | |
355 | didn't finish within the time limit. | |
356 | ||
357 | This function is only called from inside spinlock-protected code. | |
358 | */ | |
3aeea5b9 | 359 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
1da177e4 | 360 | { |
3aeea5b9 | 361 | void __iomem *ccr = base_addr + (CyCCR << index); |
ad39c300 | 362 | unsigned int i; |
1da177e4 | 363 | |
02f1175c JS |
364 | /* Check to see that the previous command has completed */ |
365 | for (i = 0; i < 100; i++) { | |
3aeea5b9 | 366 | if (readb(ccr) == 0) |
02f1175c | 367 | break; |
02f1175c | 368 | udelay(10L); |
1da177e4 | 369 | } |
02f1175c JS |
370 | /* if the CCR never cleared, the previous command |
371 | didn't finish within the "reasonable time" */ | |
372 | if (i == 100) | |
096dcfce | 373 | return -1; |
1da177e4 | 374 | |
02f1175c | 375 | /* Issue the new command */ |
3aeea5b9 | 376 | cy_writeb(ccr, cmd); |
1da177e4 | 377 | |
096dcfce | 378 | return 0; |
3aeea5b9 JS |
379 | } |
380 | ||
381 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) | |
382 | { | |
383 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, | |
384 | port->card->bus_index); | |
385 | } | |
1da177e4 LT |
386 | |
387 | #ifdef CONFIG_ISA | |
388 | /* ISA interrupt detection code */ | |
15ed6cc0 | 389 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 390 | { |
02f1175c JS |
391 | int irq; |
392 | unsigned long irqs, flags; | |
393 | int save_xir, save_car; | |
394 | int index = 0; /* IRQ probing is only for ISA */ | |
395 | ||
396 | /* forget possible initially masked and pending IRQ */ | |
397 | irq = probe_irq_off(probe_irq_on()); | |
398 | ||
399 | /* Clear interrupts on the board first */ | |
400 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
401 | /* Cy_ClrIntr is 0x1800 */ | |
402 | ||
403 | irqs = probe_irq_on(); | |
404 | /* Wait ... */ | |
f6e208c1 | 405 | msleep(5); |
02f1175c JS |
406 | |
407 | /* Enable the Tx interrupts on the CD1400 */ | |
408 | local_irq_save(flags); | |
409 | cy_writeb(address + (CyCAR << index), 0); | |
3aeea5b9 | 410 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
02f1175c JS |
411 | |
412 | cy_writeb(address + (CyCAR << index), 0); | |
413 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 414 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
415 | local_irq_restore(flags); |
416 | ||
417 | /* Wait ... */ | |
f6e208c1 | 418 | msleep(5); |
02f1175c JS |
419 | |
420 | /* Check which interrupt is in use */ | |
421 | irq = probe_irq_off(irqs); | |
422 | ||
423 | /* Clean up */ | |
db05c3b1 JS |
424 | save_xir = (u_char) readb(address + (CyTIR << index)); |
425 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
426 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
427 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 428 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
429 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
430 | cy_writeb(address + (CyCAR << index), (save_car)); | |
431 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
432 | /* Cy_ClrIntr is 0x1800 */ | |
433 | ||
434 | return (irq > 0) ? irq : 0; | |
1da177e4 | 435 | } |
02f1175c | 436 | #endif /* CONFIG_ISA */ |
1da177e4 | 437 | |
ce97a097 JS |
438 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
439 | void __iomem *base_addr) | |
e941027f JS |
440 | { |
441 | struct cyclades_port *info; | |
227434f8 | 442 | struct tty_port *port; |
65f76a82 | 443 | int len, index = cinfo->bus_index; |
3aeea5b9 | 444 | u8 ivr, save_xir, channel, save_car, data, char_count; |
e941027f | 445 | |
e941027f | 446 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 447 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 448 | #endif |
ce97a097 | 449 | /* determine the channel & change to that context */ |
65f76a82 JS |
450 | save_xir = readb(base_addr + (CyRIR << index)); |
451 | channel = save_xir & CyIRChannel; | |
ce97a097 | 452 | info = &cinfo->ports[channel + chip * 4]; |
227434f8 | 453 | port = &info->port; |
3aeea5b9 JS |
454 | save_car = cyy_readb(info, CyCAR); |
455 | cyy_writeb(info, CyCAR, save_xir); | |
456 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; | |
ce97a097 | 457 | |
ce97a097 | 458 | /* there is an open port for this data */ |
3aeea5b9 JS |
459 | if (ivr == CyIVRRxEx) { /* exception */ |
460 | data = cyy_readb(info, CyRDSR); | |
ce97a097 JS |
461 | |
462 | /* For statistics only */ | |
463 | if (data & CyBREAK) | |
464 | info->icount.brk++; | |
465 | else if (data & CyFRAME) | |
466 | info->icount.frame++; | |
467 | else if (data & CyPARITY) | |
468 | info->icount.parity++; | |
469 | else if (data & CyOVERRUN) | |
470 | info->icount.overrun++; | |
471 | ||
472 | if (data & info->ignore_status_mask) { | |
473 | info->icount.rx++; | |
ce97a097 JS |
474 | return; |
475 | } | |
227434f8 | 476 | if (tty_buffer_request_room(port, 1)) { |
ce97a097 JS |
477 | if (data & info->read_status_mask) { |
478 | if (data & CyBREAK) { | |
92a19f9c | 479 | tty_insert_flip_char(port, |
3aeea5b9 JS |
480 | cyy_readb(info, CyRDSR), |
481 | TTY_BREAK); | |
ce97a097 | 482 | info->icount.rx++; |
6732c8bb JS |
483 | if (port->flags & ASYNC_SAK) { |
484 | struct tty_struct *tty = | |
485 | tty_port_tty_get(port); | |
486 | if (tty) { | |
487 | do_SAK(tty); | |
488 | tty_kref_put(tty); | |
489 | } | |
490 | } | |
ce97a097 | 491 | } else if (data & CyFRAME) { |
92a19f9c | 492 | tty_insert_flip_char(port, |
3aeea5b9 JS |
493 | cyy_readb(info, CyRDSR), |
494 | TTY_FRAME); | |
ce97a097 JS |
495 | info->icount.rx++; |
496 | info->idle_stats.frame_errs++; | |
497 | } else if (data & CyPARITY) { | |
498 | /* Pieces of seven... */ | |
92a19f9c | 499 | tty_insert_flip_char(port, |
3aeea5b9 JS |
500 | cyy_readb(info, CyRDSR), |
501 | TTY_PARITY); | |
ce97a097 JS |
502 | info->icount.rx++; |
503 | info->idle_stats.parity_errs++; | |
504 | } else if (data & CyOVERRUN) { | |
92a19f9c | 505 | tty_insert_flip_char(port, 0, |
ce97a097 JS |
506 | TTY_OVERRUN); |
507 | info->icount.rx++; | |
508 | /* If the flip buffer itself is | |
509 | overflowing, we still lose | |
510 | the next incoming character. | |
511 | */ | |
92a19f9c | 512 | tty_insert_flip_char(port, |
3aeea5b9 JS |
513 | cyy_readb(info, CyRDSR), |
514 | TTY_FRAME); | |
02f1175c | 515 | info->icount.rx++; |
02f1175c | 516 | info->idle_stats.overruns++; |
ce97a097 JS |
517 | /* These two conditions may imply */ |
518 | /* a normal read should be done. */ | |
519 | /* } else if(data & CyTIMEOUT) { */ | |
520 | /* } else if(data & CySPECHAR) { */ | |
521 | } else { | |
92a19f9c | 522 | tty_insert_flip_char(port, 0, |
ce97a097 JS |
523 | TTY_NORMAL); |
524 | info->icount.rx++; | |
02f1175c | 525 | } |
ce97a097 | 526 | } else { |
92a19f9c | 527 | tty_insert_flip_char(port, 0, TTY_NORMAL); |
ce97a097 JS |
528 | info->icount.rx++; |
529 | } | |
530 | } else { | |
531 | /* there was a software buffer overrun and nothing | |
532 | * could be done about it!!! */ | |
533 | info->icount.buf_overrun++; | |
534 | info->idle_stats.overruns++; | |
535 | } | |
536 | } else { /* normal character reception */ | |
537 | /* load # chars available from the chip */ | |
3aeea5b9 | 538 | char_count = cyy_readb(info, CyRDCR); |
e941027f JS |
539 | |
540 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
541 | ++info->mon.int_count; |
542 | info->mon.char_count += char_count; | |
543 | if (char_count > info->mon.char_max) | |
544 | info->mon.char_max = char_count; | |
545 | info->mon.char_last = char_count; | |
e941027f | 546 | #endif |
227434f8 | 547 | len = tty_buffer_request_room(port, char_count); |
ce97a097 | 548 | while (len--) { |
3aeea5b9 | 549 | data = cyy_readb(info, CyRDSR); |
92a19f9c | 550 | tty_insert_flip_char(port, data, TTY_NORMAL); |
ce97a097 JS |
551 | info->idle_stats.recv_bytes++; |
552 | info->icount.rx++; | |
e941027f | 553 | #ifdef CY_16Y_HACK |
ce97a097 | 554 | udelay(10L); |
e941027f | 555 | #endif |
e941027f | 556 | } |
ce97a097 | 557 | info->idle_stats.recv_idle = jiffies; |
e941027f | 558 | } |
6732c8bb JS |
559 | tty_schedule_flip(port); |
560 | ||
ce97a097 | 561 | /* end of service */ |
3aeea5b9 JS |
562 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
563 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 564 | } |
e941027f | 565 | |
65f76a82 | 566 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
567 | void __iomem *base_addr) |
568 | { | |
569 | struct cyclades_port *info; | |
d13549f8 | 570 | struct tty_struct *tty; |
65f76a82 JS |
571 | int char_count, index = cinfo->bus_index; |
572 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
573 | |
574 | /* Since we only get here when the transmit buffer | |
575 | is empty, we know we can always stuff a dozen | |
576 | characters. */ | |
e941027f | 577 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 578 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
579 | #endif |
580 | ||
ce97a097 | 581 | /* determine the channel & change to that context */ |
65f76a82 JS |
582 | save_xir = readb(base_addr + (CyTIR << index)); |
583 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
584 | save_car = readb(base_addr + (CyCAR << index)); |
585 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
586 | ||
ce97a097 | 587 | info = &cinfo->ports[channel + chip * 4]; |
d13549f8 JS |
588 | tty = tty_port_tty_get(&info->port); |
589 | if (tty == NULL) { | |
3aeea5b9 | 590 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
ce97a097 JS |
591 | goto end; |
592 | } | |
02f1175c | 593 | |
ce97a097 JS |
594 | /* load the on-chip space for outbound data */ |
595 | char_count = info->xmit_fifo_size; | |
02f1175c | 596 | |
ce97a097 JS |
597 | if (info->x_char) { /* send special char */ |
598 | outch = info->x_char; | |
3aeea5b9 | 599 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
600 | char_count--; |
601 | info->icount.tx++; | |
602 | info->x_char = 0; | |
603 | } | |
02f1175c | 604 | |
ce97a097 JS |
605 | if (info->breakon || info->breakoff) { |
606 | if (info->breakon) { | |
3aeea5b9 JS |
607 | cyy_writeb(info, CyTDR, 0); |
608 | cyy_writeb(info, CyTDR, 0x81); | |
ce97a097 JS |
609 | info->breakon = 0; |
610 | char_count -= 2; | |
e941027f | 611 | } |
ce97a097 | 612 | if (info->breakoff) { |
3aeea5b9 JS |
613 | cyy_writeb(info, CyTDR, 0); |
614 | cyy_writeb(info, CyTDR, 0x83); | |
ce97a097 JS |
615 | info->breakoff = 0; |
616 | char_count -= 2; | |
e941027f | 617 | } |
ce97a097 | 618 | } |
02f1175c | 619 | |
ce97a097 JS |
620 | while (char_count-- > 0) { |
621 | if (!info->xmit_cnt) { | |
3aeea5b9 JS |
622 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
623 | cyy_writeb(info, CySRER, | |
624 | cyy_readb(info, CySRER) & ~CyTxMpty); | |
ce97a097 | 625 | } else { |
3aeea5b9 JS |
626 | cyy_writeb(info, CySRER, CyTxMpty | |
627 | (cyy_readb(info, CySRER) & ~CyTxRdy)); | |
02f1175c | 628 | } |
ce97a097 JS |
629 | goto done; |
630 | } | |
77451e53 | 631 | if (info->port.xmit_buf == NULL) { |
3aeea5b9 JS |
632 | cyy_writeb(info, CySRER, |
633 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
634 | goto done; |
635 | } | |
d13549f8 | 636 | if (tty->stopped || tty->hw_stopped) { |
3aeea5b9 JS |
637 | cyy_writeb(info, CySRER, |
638 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
639 | goto done; |
640 | } | |
641 | /* Because the Embedded Transmit Commands have been enabled, | |
642 | * we must check to see if the escape character, NULL, is being | |
643 | * sent. If it is, we must ensure that there is room for it to | |
644 | * be doubled in the output stream. Therefore we no longer | |
645 | * advance the pointer when the character is fetched, but | |
646 | * rather wait until after the check for a NULL output | |
647 | * character. This is necessary because there may not be room | |
648 | * for the two chars needed to send a NULL.) | |
649 | */ | |
77451e53 | 650 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
651 | if (outch) { |
652 | info->xmit_cnt--; | |
653 | info->xmit_tail = (info->xmit_tail + 1) & | |
654 | (SERIAL_XMIT_SIZE - 1); | |
3aeea5b9 | 655 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
656 | info->icount.tx++; |
657 | } else { | |
658 | if (char_count > 1) { | |
02f1175c JS |
659 | info->xmit_cnt--; |
660 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 661 | (SERIAL_XMIT_SIZE - 1); |
3aeea5b9 JS |
662 | cyy_writeb(info, CyTDR, outch); |
663 | cyy_writeb(info, CyTDR, 0); | |
02f1175c | 664 | info->icount.tx++; |
ce97a097 | 665 | char_count--; |
02f1175c | 666 | } |
e941027f | 667 | } |
e941027f JS |
668 | } |
669 | ||
ce97a097 | 670 | done: |
d13549f8 JS |
671 | tty_wakeup(tty); |
672 | tty_kref_put(tty); | |
ce97a097 JS |
673 | end: |
674 | /* end of service */ | |
3aeea5b9 JS |
675 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
676 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 677 | } |
02f1175c | 678 | |
ce97a097 JS |
679 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
680 | void __iomem *base_addr) | |
681 | { | |
682 | struct cyclades_port *info; | |
d13549f8 | 683 | struct tty_struct *tty; |
65f76a82 JS |
684 | int index = cinfo->bus_index; |
685 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
686 | |
687 | /* determine the channel & change to that context */ | |
65f76a82 JS |
688 | save_xir = readb(base_addr + (CyMIR << index)); |
689 | channel = save_xir & CyIRChannel; | |
ce97a097 | 690 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
691 | save_car = cyy_readb(info, CyCAR); |
692 | cyy_writeb(info, CyCAR, save_xir); | |
ce97a097 | 693 | |
3aeea5b9 JS |
694 | mdm_change = cyy_readb(info, CyMISR); |
695 | mdm_status = cyy_readb(info, CyMSVR1); | |
ce97a097 | 696 | |
d13549f8 JS |
697 | tty = tty_port_tty_get(&info->port); |
698 | if (!tty) | |
ce97a097 JS |
699 | goto end; |
700 | ||
701 | if (mdm_change & CyANY_DELTA) { | |
702 | /* For statistics only */ | |
703 | if (mdm_change & CyDCD) | |
704 | info->icount.dcd++; | |
705 | if (mdm_change & CyCTS) | |
706 | info->icount.cts++; | |
707 | if (mdm_change & CyDSR) | |
708 | info->icount.dsr++; | |
709 | if (mdm_change & CyRI) | |
710 | info->icount.rng++; | |
711 | ||
bdc04e31 | 712 | wake_up_interruptible(&info->port.delta_msr_wait); |
ce97a097 JS |
713 | } |
714 | ||
2d68655d | 715 | if ((mdm_change & CyDCD) && tty_port_check_carrier(&info->port)) { |
174e6fe0 JS |
716 | if (mdm_status & CyDCD) |
717 | wake_up_interruptible(&info->port.open_wait); | |
718 | else | |
d13549f8 | 719 | tty_hangup(tty); |
ce97a097 | 720 | } |
f21ec3d2 | 721 | if ((mdm_change & CyCTS) && tty_port_cts_enabled(&info->port)) { |
d13549f8 | 722 | if (tty->hw_stopped) { |
ce97a097 JS |
723 | if (mdm_status & CyCTS) { |
724 | /* cy_start isn't used | |
725 | because... !!! */ | |
d13549f8 | 726 | tty->hw_stopped = 0; |
3aeea5b9 JS |
727 | cyy_writeb(info, CySRER, |
728 | cyy_readb(info, CySRER) | CyTxRdy); | |
d13549f8 | 729 | tty_wakeup(tty); |
02f1175c | 730 | } |
ce97a097 JS |
731 | } else { |
732 | if (!(mdm_status & CyCTS)) { | |
733 | /* cy_stop isn't used | |
734 | because ... !!! */ | |
d13549f8 | 735 | tty->hw_stopped = 1; |
3aeea5b9 JS |
736 | cyy_writeb(info, CySRER, |
737 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
02f1175c | 738 | } |
e941027f | 739 | } |
e941027f | 740 | } |
ce97a097 JS |
741 | /* if (mdm_change & CyDSR) { |
742 | } | |
743 | if (mdm_change & CyRI) { | |
744 | }*/ | |
d13549f8 | 745 | tty_kref_put(tty); |
ce97a097 JS |
746 | end: |
747 | /* end of service */ | |
3aeea5b9 JS |
748 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
749 | cyy_writeb(info, CyCAR, save_car); | |
e941027f JS |
750 | } |
751 | ||
1da177e4 LT |
752 | /* The real interrupt service routine is called |
753 | whenever the card wants its hand held--chars | |
754 | received, out buffer empty, modem change, etc. | |
755 | */ | |
02f1175c | 756 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 757 | { |
02f1175c | 758 | int status; |
f7429034 | 759 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 760 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 761 | unsigned int chip, too_many, had_work; |
02f1175c | 762 | int index; |
02f1175c | 763 | |
f7429034 | 764 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 765 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
766 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
767 | irq); | |
1da177e4 | 768 | #endif |
02f1175c JS |
769 | return IRQ_NONE; /* spurious interrupt */ |
770 | } | |
771 | ||
772 | card_base_addr = cinfo->base_addr; | |
773 | index = cinfo->bus_index; | |
774 | ||
f1e83c6c JS |
775 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
776 | if (unlikely(card_base_addr == NULL)) | |
777 | return IRQ_HANDLED; | |
778 | ||
02f1175c JS |
779 | /* This loop checks all chips in the card. Make a note whenever |
780 | _any_ chip had some work to do, as this is considered an | |
781 | indication that there will be more to do. Only when no chip | |
782 | has any work does this outermost loop exit. | |
783 | */ | |
784 | do { | |
785 | had_work = 0; | |
786 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
787 | base_addr = cinfo->base_addr + | |
788 | (cy_chip_offset[chip] << index); | |
789 | too_many = 0; | |
db05c3b1 | 790 | while ((status = readb(base_addr + |
02f1175c JS |
791 | (CySVRR << index))) != 0x00) { |
792 | had_work++; | |
793 | /* The purpose of the following test is to ensure that | |
794 | no chip can monopolize the driver. This forces the | |
795 | chips to be checked in a round-robin fashion (after | |
796 | draining each of a bunch (1000) of characters). | |
797 | */ | |
ce97a097 | 798 | if (1000 < too_many++) |
02f1175c | 799 | break; |
1c0a387c | 800 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
801 | if (status & CySRReceive) /* rx intr */ |
802 | cyy_chip_rx(cinfo, chip, base_addr); | |
803 | if (status & CySRTransmit) /* tx intr */ | |
804 | cyy_chip_tx(cinfo, chip, base_addr); | |
805 | if (status & CySRModem) /* modem intr */ | |
806 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 807 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
808 | } |
809 | } | |
810 | } while (had_work); | |
811 | ||
812 | /* clear interrupts */ | |
813 | spin_lock(&cinfo->card_lock); | |
814 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
815 | /* Cy_ClrIntr is 0x1800 */ | |
816 | spin_unlock(&cinfo->card_lock); | |
817 | return IRQ_HANDLED; | |
818 | } /* cyy_interrupt */ | |
1da177e4 | 819 | |
4d768200 JS |
820 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
821 | unsigned int clear) | |
822 | { | |
823 | struct cyclades_card *card = info->card; | |
3aeea5b9 | 824 | int channel = info->line - card->first_line; |
0d348729 | 825 | u32 rts, dtr, msvrr, msvrd; |
4d768200 | 826 | |
4d768200 | 827 | channel &= 0x03; |
4d768200 | 828 | |
0d348729 JS |
829 | if (info->rtsdtr_inv) { |
830 | msvrr = CyMSVR2; | |
831 | msvrd = CyMSVR1; | |
832 | rts = CyDTR; | |
833 | dtr = CyRTS; | |
834 | } else { | |
835 | msvrr = CyMSVR1; | |
836 | msvrd = CyMSVR2; | |
837 | rts = CyRTS; | |
838 | dtr = CyDTR; | |
839 | } | |
4d768200 | 840 | if (set & TIOCM_RTS) { |
3aeea5b9 JS |
841 | cyy_writeb(info, CyCAR, channel); |
842 | cyy_writeb(info, msvrr, rts); | |
4d768200 JS |
843 | } |
844 | if (clear & TIOCM_RTS) { | |
3aeea5b9 JS |
845 | cyy_writeb(info, CyCAR, channel); |
846 | cyy_writeb(info, msvrr, ~rts); | |
4d768200 JS |
847 | } |
848 | if (set & TIOCM_DTR) { | |
3aeea5b9 JS |
849 | cyy_writeb(info, CyCAR, channel); |
850 | cyy_writeb(info, msvrd, dtr); | |
4d768200 JS |
851 | #ifdef CY_DEBUG_DTR |
852 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
853 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
854 | cyy_readb(info, CyMSVR1), |
855 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
856 | #endif |
857 | } | |
858 | if (clear & TIOCM_DTR) { | |
3aeea5b9 JS |
859 | cyy_writeb(info, CyCAR, channel); |
860 | cyy_writeb(info, msvrd, ~dtr); | |
4d768200 JS |
861 | #ifdef CY_DEBUG_DTR |
862 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
863 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
864 | cyy_readb(info, CyMSVR1), |
865 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
866 | #endif |
867 | } | |
868 | } | |
869 | ||
1da177e4 LT |
870 | /***********************************************************/ |
871 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 872 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
873 | /***********************************************************/ |
874 | ||
875 | static int | |
02f1175c | 876 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 877 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 878 | { |
f0eefdc3 | 879 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
880 | unsigned long loc_doorbell; |
881 | ||
97e87f8e | 882 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
883 | if (loc_doorbell) { |
884 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
885 | *channel = readl(&board_ctrl->fwcmd_channel); |
886 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 887 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
888 | return 1; |
889 | } | |
890 | return 0; | |
891 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
892 | |
893 | static int | |
02f1175c | 894 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 895 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 896 | { |
f0eefdc3 | 897 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 898 | __u32 __iomem *pci_doorbell; |
65f76a82 | 899 | unsigned int index; |
02f1175c | 900 | |
2693f485 | 901 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 902 | return -1; |
15ed6cc0 | 903 | |
02f1175c | 904 | index = 0; |
97e87f8e | 905 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 906 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 907 | if (index++ == 1000) |
db05c3b1 | 908 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
909 | udelay(50L); |
910 | } | |
911 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
912 | cy_writel(&board_ctrl->hcmd_param, param); | |
913 | cy_writel(pci_doorbell, (long)cmd); | |
914 | ||
096dcfce | 915 | return 0; |
02f1175c | 916 | } /* cyz_issue_cmd */ |
1da177e4 | 917 | |
dabe2c13 | 918 | static void cyz_handle_rx(struct cyclades_port *info) |
1da177e4 | 919 | { |
f0eefdc3 | 920 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 921 | struct cyclades_card *cinfo = info->card; |
227434f8 | 922 | struct tty_port *port = &info->port; |
65f76a82 | 923 | unsigned int char_count; |
02f1175c | 924 | int len; |
1da177e4 | 925 | #ifdef BLOCKMOVE |
ce71b0ff | 926 | unsigned char *buf; |
1da177e4 | 927 | #else |
02f1175c | 928 | char data; |
1da177e4 | 929 | #endif |
ad39c300 | 930 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 931 | |
db05c3b1 JS |
932 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
933 | rx_put = readl(&buf_ctrl->rx_put); | |
934 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
935 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
936 | if (rx_put >= rx_get) |
937 | char_count = rx_put - rx_get; | |
938 | else | |
939 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 940 | |
dabe2c13 JS |
941 | if (!char_count) |
942 | return; | |
943 | ||
1da177e4 | 944 | #ifdef CY_ENABLE_MONITORING |
dabe2c13 JS |
945 | info->mon.int_count++; |
946 | info->mon.char_count += char_count; | |
947 | if (char_count > info->mon.char_max) | |
948 | info->mon.char_max = char_count; | |
949 | info->mon.char_last = char_count; | |
1da177e4 | 950 | #endif |
dabe2c13 | 951 | |
1da177e4 | 952 | #ifdef BLOCKMOVE |
dabe2c13 JS |
953 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
954 | for performance, but because of buffer boundaries, there | |
955 | may be several steps to the operation */ | |
956 | while (1) { | |
957 | len = tty_prepare_flip_string(port, &buf, | |
958 | char_count); | |
959 | if (!len) | |
960 | break; | |
ce71b0ff | 961 | |
dabe2c13 JS |
962 | len = min_t(unsigned int, min(len, char_count), |
963 | rx_bufsize - new_rx_get); | |
ce71b0ff | 964 | |
dabe2c13 JS |
965 | memcpy_fromio(buf, cinfo->base_addr + |
966 | rx_bufaddr + new_rx_get, len); | |
ce71b0ff | 967 | |
dabe2c13 JS |
968 | new_rx_get = (new_rx_get + len) & |
969 | (rx_bufsize - 1); | |
970 | char_count -= len; | |
971 | info->icount.rx += len; | |
972 | info->idle_stats.recv_bytes += len; | |
973 | } | |
1da177e4 | 974 | #else |
dabe2c13 JS |
975 | len = tty_buffer_request_room(port, char_count); |
976 | while (len--) { | |
977 | data = readb(cinfo->base_addr + rx_bufaddr + | |
978 | new_rx_get); | |
979 | new_rx_get = (new_rx_get + 1) & | |
980 | (rx_bufsize - 1); | |
981 | tty_insert_flip_char(port, data, TTY_NORMAL); | |
982 | info->idle_stats.recv_bytes++; | |
983 | info->icount.rx++; | |
984 | } | |
1da177e4 LT |
985 | #endif |
986 | #ifdef CONFIG_CYZ_INTR | |
dabe2c13 JS |
987 | /* Recalculate the number of chars in the RX buffer and issue |
988 | a cmd in case it's higher than the RX high water mark */ | |
989 | rx_put = readl(&buf_ctrl->rx_put); | |
990 | if (rx_put >= rx_get) | |
991 | char_count = rx_put - rx_get; | |
992 | else | |
993 | char_count = rx_put - rx_get + rx_bufsize; | |
994 | if (char_count >= readl(&buf_ctrl->rx_threshold) && | |
995 | !timer_pending(&cyz_rx_full_timer[ | |
996 | info->line])) | |
997 | mod_timer(&cyz_rx_full_timer[info->line], | |
998 | jiffies + 1); | |
1da177e4 | 999 | #endif |
dabe2c13 JS |
1000 | info->idle_stats.recv_idle = jiffies; |
1001 | tty_schedule_flip(&info->port); | |
1002 | ||
1003 | /* Update rx_get */ | |
1004 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 LT |
1005 | } |
1006 | ||
dabe2c13 | 1007 | static void cyz_handle_tx(struct cyclades_port *info) |
1da177e4 | 1008 | { |
f0eefdc3 | 1009 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1010 | struct cyclades_card *cinfo = info->card; |
dabe2c13 | 1011 | struct tty_struct *tty; |
65f76a82 JS |
1012 | u8 data; |
1013 | unsigned int char_count; | |
1da177e4 | 1014 | #ifdef BLOCKMOVE |
02f1175c | 1015 | int small_count; |
1da177e4 | 1016 | #endif |
ad39c300 | 1017 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1018 | |
02f1175c JS |
1019 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1020 | return; | |
1da177e4 | 1021 | |
db05c3b1 JS |
1022 | tx_get = readl(&buf_ctrl->tx_get); |
1023 | tx_put = readl(&buf_ctrl->tx_put); | |
1024 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1025 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1026 | if (tx_put >= tx_get) |
1027 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1028 | else | |
1029 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1030 | |
dabe2c13 JS |
1031 | if (!char_count) |
1032 | return; | |
1033 | ||
1034 | tty = tty_port_tty_get(&info->port); | |
1035 | if (tty == NULL) | |
1036 | goto ztxdone; | |
1da177e4 | 1037 | |
dabe2c13 JS |
1038 | if (info->x_char) { /* send special char */ |
1039 | data = info->x_char; | |
1da177e4 | 1040 | |
dabe2c13 JS |
1041 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1042 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1043 | info->x_char = 0; | |
1044 | char_count--; | |
1045 | info->icount.tx++; | |
1046 | } | |
1da177e4 | 1047 | #ifdef BLOCKMOVE |
dabe2c13 JS |
1048 | while (0 < (small_count = min_t(unsigned int, |
1049 | tx_bufsize - tx_put, min_t(unsigned int, | |
1050 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1051 | min_t(unsigned int, info->xmit_cnt, | |
1052 | char_count))))) { | |
1053 | ||
1054 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put), | |
1055 | &info->port.xmit_buf[info->xmit_tail], | |
1056 | small_count); | |
1057 | ||
1058 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1059 | char_count -= small_count; | |
1060 | info->icount.tx += small_count; | |
1061 | info->xmit_cnt -= small_count; | |
1062 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1063 | (SERIAL_XMIT_SIZE - 1); | |
1064 | } | |
1da177e4 | 1065 | #else |
dabe2c13 JS |
1066 | while (info->xmit_cnt && char_count) { |
1067 | data = info->port.xmit_buf[info->xmit_tail]; | |
1068 | info->xmit_cnt--; | |
1069 | info->xmit_tail = (info->xmit_tail + 1) & | |
1070 | (SERIAL_XMIT_SIZE - 1); | |
1071 | ||
1072 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1073 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1074 | char_count--; | |
1075 | info->icount.tx++; | |
1076 | } | |
1da177e4 | 1077 | #endif |
dabe2c13 JS |
1078 | tty_wakeup(tty); |
1079 | tty_kref_put(tty); | |
7fa57a0c | 1080 | ztxdone: |
dabe2c13 JS |
1081 | /* Update tx_put */ |
1082 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 LT |
1083 | } |
1084 | ||
02f1175c | 1085 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1086 | { |
f0eefdc3 | 1087 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c | 1088 | struct cyclades_port *info; |
101b8159 | 1089 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1090 | __u8 cmd; |
02f1175c JS |
1091 | int special_count; |
1092 | int delta_count; | |
1093 | ||
db05c3b1 | 1094 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1095 | |
1096 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1097 | special_count = 0; | |
1098 | delta_count = 0; | |
dd025c0c | 1099 | info = &cinfo->ports[channel]; |
f7429034 | 1100 | |
02f1175c JS |
1101 | switch (cmd) { |
1102 | case C_CM_PR_ERROR: | |
92a19f9c | 1103 | tty_insert_flip_char(&info->port, 0, TTY_PARITY); |
02f1175c JS |
1104 | info->icount.rx++; |
1105 | special_count++; | |
1106 | break; | |
1107 | case C_CM_FR_ERROR: | |
92a19f9c | 1108 | tty_insert_flip_char(&info->port, 0, TTY_FRAME); |
02f1175c JS |
1109 | info->icount.rx++; |
1110 | special_count++; | |
1111 | break; | |
1112 | case C_CM_RXBRK: | |
92a19f9c | 1113 | tty_insert_flip_char(&info->port, 0, TTY_BREAK); |
02f1175c JS |
1114 | info->icount.rx++; |
1115 | special_count++; | |
1116 | break; | |
1117 | case C_CM_MDCD: | |
1118 | info->icount.dcd++; | |
1119 | delta_count++; | |
2d68655d | 1120 | if (tty_port_check_carrier(&info->port)) { |
f0eefdc3 JS |
1121 | u32 dcd = fw_ver > 241 ? param : |
1122 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1123 | if (dcd & C_RS_DCD) |
77451e53 | 1124 | wake_up_interruptible(&info->port.open_wait); |
aa27a094 JS |
1125 | else |
1126 | tty_port_tty_hangup(&info->port, false); | |
02f1175c JS |
1127 | } |
1128 | break; | |
1129 | case C_CM_MCTS: | |
1130 | info->icount.cts++; | |
1131 | delta_count++; | |
1132 | break; | |
1133 | case C_CM_MRI: | |
1134 | info->icount.rng++; | |
1135 | delta_count++; | |
1136 | break; | |
1137 | case C_CM_MDSR: | |
1138 | info->icount.dsr++; | |
1139 | delta_count++; | |
1140 | break; | |
1da177e4 | 1141 | #ifdef Z_WAKE |
02f1175c | 1142 | case C_CM_IOCTLW: |
ebafeeff | 1143 | complete(&info->shutdown_wait); |
02f1175c | 1144 | break; |
1da177e4 LT |
1145 | #endif |
1146 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1147 | case C_CM_RXHIWM: |
1148 | case C_CM_RXNNDT: | |
1149 | case C_CM_INTBACK2: | |
1150 | /* Reception Interrupt */ | |
1da177e4 | 1151 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1152 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1153 | "port %ld\n", info->card, channel); | |
1da177e4 | 1154 | #endif |
dabe2c13 | 1155 | cyz_handle_rx(info); |
02f1175c JS |
1156 | break; |
1157 | case C_CM_TXBEMPTY: | |
1158 | case C_CM_TXLOWWM: | |
1159 | case C_CM_INTBACK: | |
1160 | /* Transmission Interrupt */ | |
1da177e4 | 1161 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1162 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1163 | "port %ld\n", info->card, channel); | |
1da177e4 | 1164 | #endif |
dabe2c13 | 1165 | cyz_handle_tx(info); |
02f1175c JS |
1166 | break; |
1167 | #endif /* CONFIG_CYZ_INTR */ | |
1168 | case C_CM_FATAL: | |
1169 | /* should do something with this !!! */ | |
1170 | break; | |
1171 | default: | |
1172 | break; | |
1173 | } | |
1174 | if (delta_count) | |
bdc04e31 | 1175 | wake_up_interruptible(&info->port.delta_msr_wait); |
02f1175c | 1176 | if (special_count) |
6732c8bb | 1177 | tty_schedule_flip(&info->port); |
1da177e4 | 1178 | } |
1da177e4 LT |
1179 | } |
1180 | ||
1181 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1182 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1183 | { |
f7429034 | 1184 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1185 | |
2693f485 | 1186 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1187 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1188 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1189 | "(IRQ%d).\n", irq); | |
1da177e4 | 1190 | #endif |
02f1175c JS |
1191 | return IRQ_NONE; |
1192 | } | |
1da177e4 | 1193 | |
02f1175c JS |
1194 | /* Handle the interrupts */ |
1195 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1196 | |
02f1175c JS |
1197 | return IRQ_HANDLED; |
1198 | } /* cyz_interrupt */ | |
1da177e4 | 1199 | |
02f1175c | 1200 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1201 | { |
02f1175c | 1202 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1203 | struct cyclades_card *card = info->card; |
02f1175c | 1204 | int retval; |
875b206b | 1205 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1206 | unsigned long flags; |
1207 | ||
9fa1b3b1 | 1208 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1209 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1210 | if (retval != 0) { |
21719191 | 1211 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1212 | info->line, retval); |
1213 | } | |
9fa1b3b1 | 1214 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1215 | } |
1216 | ||
02f1175c | 1217 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1218 | |
02f1175c | 1219 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1220 | { |
02f1175c JS |
1221 | struct cyclades_card *cinfo; |
1222 | struct cyclades_port *info; | |
b7050906 | 1223 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1224 | unsigned int port, card; |
1da177e4 | 1225 | |
02f1175c JS |
1226 | for (card = 0; card < NR_CARDS; card++) { |
1227 | cinfo = &cy_card[card]; | |
1228 | ||
2693f485 | 1229 | if (!cy_is_Z(cinfo)) |
02f1175c | 1230 | continue; |
2693f485 | 1231 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1232 | continue; |
1233 | ||
1da177e4 | 1234 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1235 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1236 | cinfo->intr_enabled = 1; |
1237 | continue; | |
1238 | } | |
1da177e4 | 1239 | |
02f1175c | 1240 | cyz_handle_cmd(cinfo); |
1da177e4 | 1241 | |
02f1175c | 1242 | for (port = 0; port < cinfo->nports; port++) { |
dd025c0c | 1243 | info = &cinfo->ports[port]; |
d13549f8 | 1244 | |
02f1175c | 1245 | if (!info->throttle) |
dabe2c13 JS |
1246 | cyz_handle_rx(info); |
1247 | cyz_handle_tx(info); | |
02f1175c JS |
1248 | } |
1249 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1250 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1251 | } |
b7050906 | 1252 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1253 | } /* cyz_poll */ |
1da177e4 | 1254 | |
02f1175c | 1255 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1256 | |
1257 | /********** End of block of Cyclades-Z specific code *********/ | |
1258 | /***********************************************************/ | |
1259 | ||
1da177e4 LT |
1260 | /* This is called whenever a port becomes active; |
1261 | interrupts are enabled and DTR & RTS are turned on. | |
1262 | */ | |
d13549f8 | 1263 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1264 | { |
875b206b | 1265 | struct cyclades_card *card; |
02f1175c JS |
1266 | unsigned long flags; |
1267 | int retval = 0; | |
cc7fdf49 | 1268 | int channel; |
02f1175c | 1269 | unsigned long page; |
1da177e4 | 1270 | |
02f1175c | 1271 | card = info->card; |
875b206b | 1272 | channel = info->line - card->first_line; |
1da177e4 | 1273 | |
02f1175c JS |
1274 | page = get_zeroed_page(GFP_KERNEL); |
1275 | if (!page) | |
1276 | return -ENOMEM; | |
1da177e4 | 1277 | |
9fa1b3b1 | 1278 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1279 | |
d41861ca | 1280 | if (tty_port_initialized(&info->port)) |
02f1175c | 1281 | goto errout; |
1da177e4 | 1282 | |
02f1175c | 1283 | if (!info->type) { |
d13549f8 | 1284 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1285 | goto errout; |
1286 | } | |
1da177e4 | 1287 | |
77451e53 | 1288 | if (info->port.xmit_buf) |
02f1175c JS |
1289 | free_page(page); |
1290 | else | |
77451e53 | 1291 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1292 | |
9fa1b3b1 | 1293 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1294 | |
d13549f8 | 1295 | cy_set_line_char(info, tty); |
1da177e4 | 1296 | |
2693f485 | 1297 | if (!cy_is_Z(card)) { |
02f1175c | 1298 | channel &= 0x03; |
1da177e4 | 1299 | |
9fa1b3b1 | 1300 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1301 | |
3aeea5b9 | 1302 | cyy_writeb(info, CyCAR, channel); |
1da177e4 | 1303 | |
3aeea5b9 | 1304 | cyy_writeb(info, CyRTPR, |
02f1175c JS |
1305 | (info->default_timeout ? info->default_timeout : 0x02)); |
1306 | /* 10ms rx timeout */ | |
1da177e4 | 1307 | |
3aeea5b9 | 1308 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
1da177e4 | 1309 | |
4d768200 | 1310 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1311 | |
3aeea5b9 | 1312 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
02f1175c | 1313 | } else { |
f0eefdc3 | 1314 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1315 | |
2693f485 | 1316 | if (!cyz_is_loaded(card)) |
02f1175c | 1317 | return -ENODEV; |
1da177e4 | 1318 | |
1da177e4 | 1319 | #ifdef CY_DEBUG_OPEN |
21719191 | 1320 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1321 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1322 | #endif |
9fa1b3b1 | 1323 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1324 | |
f0eefdc3 | 1325 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1326 | #ifdef Z_WAKE |
1327 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1328 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1329 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1330 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1331 | #else |
f0eefdc3 | 1332 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1333 | C_IN_IOCTLW | C_IN_MDCD); |
1334 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1335 | #else |
1336 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1337 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1338 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1339 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1340 | #else |
f0eefdc3 | 1341 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1342 | #endif /* CONFIG_CYZ_INTR */ |
1343 | #endif /* Z_WAKE */ | |
1344 | ||
875b206b | 1345 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1346 | if (retval != 0) { |
21719191 JS |
1347 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1348 | "%x\n", info->line, retval); | |
02f1175c | 1349 | } |
1da177e4 | 1350 | |
02f1175c | 1351 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1352 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1353 | if (retval != 0) { |
21719191 JS |
1354 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1355 | "%x\n", info->line, retval); | |
02f1175c | 1356 | } |
1da177e4 | 1357 | |
02f1175c JS |
1358 | /* set timeout !!! */ |
1359 | /* set RTS and DTR !!! */ | |
4d768200 | 1360 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1361 | |
02f1175c | 1362 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1363 | } |
02f1175c | 1364 | |
d41861ca | 1365 | tty_port_set_initialized(&info->port, 1); |
1da177e4 | 1366 | |
cc7fdf49 JS |
1367 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1368 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1369 | info->breakon = info->breakoff = 0; | |
1370 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1371 | info->idle_stats.in_use = | |
1372 | info->idle_stats.recv_idle = | |
1373 | info->idle_stats.xmit_idle = jiffies; | |
1374 | ||
1375 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1376 | |
1377 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1378 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1379 | #endif |
1380 | return 0; | |
1381 | ||
1382 | errout: | |
9fa1b3b1 | 1383 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1384 | free_page(page); |
1da177e4 | 1385 | return retval; |
02f1175c | 1386 | } /* startup */ |
1da177e4 | 1387 | |
02f1175c | 1388 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1389 | { |
3aeea5b9 | 1390 | struct cyclades_card *card = info->card; |
02f1175c | 1391 | unsigned long flags; |
3aeea5b9 | 1392 | int channel = info->line - card->first_line; |
1da177e4 | 1393 | |
2693f485 | 1394 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1395 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
1396 | cyy_writeb(info, CyCAR, channel & 0x03); |
1397 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 1398 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1399 | } else { |
1da177e4 | 1400 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1401 | int retval; |
1da177e4 | 1402 | |
9fa1b3b1 | 1403 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1404 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1405 | if (retval != 0) { |
21719191 JS |
1406 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1407 | "%x\n", info->line, retval); | |
02f1175c | 1408 | } |
9fa1b3b1 | 1409 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1410 | #else /* CONFIG_CYZ_INTR */ |
1411 | /* Don't have to do anything at this time */ | |
1412 | #endif /* CONFIG_CYZ_INTR */ | |
1413 | } | |
1414 | } /* start_xmit */ | |
1da177e4 LT |
1415 | |
1416 | /* | |
1417 | * This routine shuts down a serial port; interrupts are disabled, | |
1418 | * and DTR is dropped if the hangup on close termio flag is on. | |
1419 | */ | |
d13549f8 | 1420 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1421 | { |
875b206b | 1422 | struct cyclades_card *card; |
02f1175c | 1423 | unsigned long flags; |
02f1175c | 1424 | |
d41861ca | 1425 | if (!tty_port_initialized(&info->port)) |
02f1175c | 1426 | return; |
02f1175c JS |
1427 | |
1428 | card = info->card; | |
2693f485 | 1429 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1430 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1431 | |
1432 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
bdc04e31 | 1433 | wake_up_interruptible(&info->port.delta_msr_wait); |
1da177e4 | 1434 | |
77451e53 | 1435 | if (info->port.xmit_buf) { |
02f1175c | 1436 | unsigned char *temp; |
77451e53 AC |
1437 | temp = info->port.xmit_buf; |
1438 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1439 | free_page((unsigned long)temp); |
1440 | } | |
9db276f8 | 1441 | if (C_HUPCL(tty)) |
4d768200 JS |
1442 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); |
1443 | ||
3aeea5b9 | 1444 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
02f1175c JS |
1445 | /* it may be appropriate to clear _XMIT at |
1446 | some later date (after testing)!!! */ | |
1447 | ||
d13549f8 | 1448 | set_bit(TTY_IO_ERROR, &tty->flags); |
d41861ca | 1449 | tty_port_set_initialized(&info->port, 0); |
9fa1b3b1 | 1450 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1451 | } else { |
1da177e4 | 1452 | #ifdef CY_DEBUG_OPEN |
0e7f4194 | 1453 | int channel = info->line - card->first_line; |
21719191 | 1454 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1455 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1456 | #endif |
1457 | ||
2693f485 | 1458 | if (!cyz_is_loaded(card)) |
02f1175c | 1459 | return; |
1da177e4 | 1460 | |
9fa1b3b1 | 1461 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1462 | |
77451e53 | 1463 | if (info->port.xmit_buf) { |
02f1175c | 1464 | unsigned char *temp; |
77451e53 AC |
1465 | temp = info->port.xmit_buf; |
1466 | info->port.xmit_buf = NULL; | |
02f1175c | 1467 | free_page((unsigned long)temp); |
1da177e4 | 1468 | } |
02f1175c | 1469 | |
9db276f8 | 1470 | if (C_HUPCL(tty)) |
4d768200 | 1471 | tty_port_lower_dtr_rts(&info->port); |
1da177e4 | 1472 | |
d13549f8 | 1473 | set_bit(TTY_IO_ERROR, &tty->flags); |
d41861ca | 1474 | tty_port_set_initialized(&info->port, 0); |
02f1175c | 1475 | |
9fa1b3b1 | 1476 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1477 | } |
1da177e4 LT |
1478 | |
1479 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1480 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1481 | #endif |
02f1175c | 1482 | } /* shutdown */ |
1da177e4 LT |
1483 | |
1484 | /* | |
1485 | * ------------------------------------------------------------ | |
1486 | * cy_open() and friends | |
1487 | * ------------------------------------------------------------ | |
1488 | */ | |
1489 | ||
1da177e4 LT |
1490 | /* |
1491 | * This routine is called whenever a serial port is opened. It | |
1492 | * performs the serial-specific initialization for the tty structure. | |
1493 | */ | |
02f1175c | 1494 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1495 | { |
02f1175c | 1496 | struct cyclades_port *info; |
410235fd | 1497 | unsigned int i, line = tty->index; |
65f76a82 | 1498 | int retval; |
1da177e4 | 1499 | |
dd025c0c JS |
1500 | for (i = 0; i < NR_CARDS; i++) |
1501 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1502 | line >= cy_card[i].first_line) | |
1503 | break; | |
1504 | if (i >= NR_CARDS) | |
1505 | return -ENODEV; | |
1506 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1507 | if (info->line < 0) |
02f1175c | 1508 | return -ENODEV; |
1da177e4 | 1509 | |
02f1175c JS |
1510 | /* If the card's firmware hasn't been loaded, |
1511 | treat it as absent from the system. This | |
1512 | will make the user pay attention. | |
1513 | */ | |
2693f485 | 1514 | if (cy_is_Z(info->card)) { |
875b206b | 1515 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1516 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1517 | ||
2693f485 JS |
1518 | if (!cyz_is_loaded(cinfo)) { |
1519 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1520 | readl(&firm_id->signature) == |
1521 | ZFIRM_HLT) { | |
21719191 JS |
1522 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1523 | "need an external power supply for " | |
1524 | "this number of ports.\nFirmware " | |
1525 | "halted.\n"); | |
02f1175c | 1526 | } else { |
21719191 JS |
1527 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1528 | "yet loaded\n"); | |
02f1175c JS |
1529 | } |
1530 | return -ENODEV; | |
1531 | } | |
1532 | #ifdef CONFIG_CYZ_INTR | |
1533 | else { | |
1534 | /* In case this Z board is operating in interrupt mode, its | |
1535 | interrupts should be enabled as soon as the first open | |
1536 | happens to one of its ports. */ | |
1537 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1538 | u16 intr; |
02f1175c | 1539 | |
02f1175c | 1540 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1541 | intr = readw(&cinfo->ctl_addr.p9060-> |
1542 | intr_ctrl_stat) | 0x0900; | |
1543 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1544 | intr_ctrl_stat, intr); | |
02f1175c JS |
1545 | /* Enable interrupts on the FW */ |
1546 | retval = cyz_issue_cmd(cinfo, 0, | |
1547 | C_CM_IRQ_ENBL, 0L); | |
1548 | if (retval != 0) { | |
21719191 JS |
1549 | printk(KERN_ERR "cyc:IRQ enable retval " |
1550 | "was %x\n", retval); | |
02f1175c | 1551 | } |
02f1175c JS |
1552 | cinfo->intr_enabled = 1; |
1553 | } | |
1da177e4 | 1554 | } |
02f1175c JS |
1555 | #endif /* CONFIG_CYZ_INTR */ |
1556 | /* Make sure this Z port really exists in hardware */ | |
1557 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1558 | return -ENODEV; | |
1da177e4 | 1559 | } |
1da177e4 | 1560 | #ifdef CY_DEBUG_OTHER |
21719191 | 1561 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1562 | #endif |
02f1175c | 1563 | tty->driver_data = info; |
15ed6cc0 | 1564 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1565 | return -ENODEV; |
15ed6cc0 | 1566 | |
1da177e4 | 1567 | #ifdef CY_DEBUG_OPEN |
21719191 | 1568 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1569 | info->port.count); |
1da177e4 | 1570 | #endif |
77451e53 | 1571 | info->port.count++; |
1da177e4 | 1572 | #ifdef CY_DEBUG_COUNT |
21719191 | 1573 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1574 | current->pid, info->port.count); |
1da177e4 | 1575 | #endif |
1da177e4 | 1576 | |
02f1175c JS |
1577 | /* |
1578 | * Start up serial port | |
1579 | */ | |
d13549f8 | 1580 | retval = cy_startup(info, tty); |
15ed6cc0 | 1581 | if (retval) |
02f1175c | 1582 | return retval; |
1da177e4 | 1583 | |
f0737579 | 1584 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1585 | if (retval) { |
1da177e4 | 1586 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1587 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1588 | "with %d\n", retval); | |
1da177e4 | 1589 | #endif |
02f1175c JS |
1590 | return retval; |
1591 | } | |
1da177e4 | 1592 | |
02f1175c | 1593 | info->throttle = 0; |
d13549f8 | 1594 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1595 | |
02f1175c | 1596 | #ifdef CY_DEBUG_OPEN |
21719191 | 1597 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1598 | #endif |
1599 | return 0; | |
1600 | } /* cy_open */ | |
1da177e4 LT |
1601 | |
1602 | /* | |
1603 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1604 | */ | |
02f1175c | 1605 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1606 | { |
875b206b | 1607 | struct cyclades_card *card; |
cab9bdd1 | 1608 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1609 | unsigned long orig_jiffies; |
1610 | int char_time; | |
1611 | ||
1612 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1613 | return; | |
1614 | ||
1615 | if (info->xmit_fifo_size == 0) | |
1616 | return; /* Just in case.... */ | |
1da177e4 | 1617 | |
02f1175c JS |
1618 | orig_jiffies = jiffies; |
1619 | /* | |
1620 | * Set the check interval to be 1/5 of the estimated time to | |
1621 | * send a single character, and make it at least 1. The check | |
1622 | * interval should also be less than the timeout. | |
1623 | * | |
1624 | * Note: we have to use pretty tight timings here to satisfy | |
1625 | * the NIST-PCTS. | |
1626 | */ | |
1627 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1628 | char_time = char_time / 5; | |
1629 | if (char_time <= 0) | |
1630 | char_time = 1; | |
1631 | if (timeout < 0) | |
1632 | timeout = 0; | |
1633 | if (timeout) | |
1634 | char_time = min(char_time, timeout); | |
1635 | /* | |
1636 | * If the transmitter hasn't cleared in twice the approximate | |
1637 | * amount of time to send the entire FIFO, it probably won't | |
1638 | * ever clear. This assumes the UART isn't doing flow | |
1639 | * control, which is currently the case. Hence, if it ever | |
1640 | * takes longer than info->timeout, this is probably due to a | |
1641 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1642 | * 2*info->timeout. | |
1643 | */ | |
1644 | if (!timeout || timeout > 2 * info->timeout) | |
1645 | timeout = 2 * info->timeout; | |
8bab534b | 1646 | |
02f1175c | 1647 | card = info->card; |
2693f485 | 1648 | if (!cy_is_Z(card)) { |
3aeea5b9 | 1649 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
02f1175c JS |
1650 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1651 | break; | |
1652 | if (timeout && time_after(jiffies, orig_jiffies + | |
1653 | timeout)) | |
1654 | break; | |
1655 | } | |
1da177e4 | 1656 | } |
02f1175c JS |
1657 | /* Run one more char cycle */ |
1658 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 LT |
1659 | } |
1660 | ||
978e595f AC |
1661 | static void cy_flush_buffer(struct tty_struct *tty) |
1662 | { | |
1663 | struct cyclades_port *info = tty->driver_data; | |
1664 | struct cyclades_card *card; | |
1665 | int channel, retval; | |
1666 | unsigned long flags; | |
1667 | ||
1668 | #ifdef CY_DEBUG_IO | |
1669 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1670 | #endif | |
1671 | ||
1672 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1673 | return; | |
1674 | ||
1675 | card = info->card; | |
1676 | channel = info->line - card->first_line; | |
1677 | ||
1678 | spin_lock_irqsave(&card->card_lock, flags); | |
1679 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1680 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1681 | ||
2693f485 | 1682 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1683 | buffers as well */ |
1684 | spin_lock_irqsave(&card->card_lock, flags); | |
1685 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1686 | if (retval != 0) { | |
1687 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1688 | "was %x\n", info->line, retval); | |
1689 | } | |
1690 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1691 | } | |
1692 | tty_wakeup(tty); | |
1693 | } /* cy_flush_buffer */ | |
1694 | ||
1695 | ||
e936ffd5 | 1696 | static void cy_do_close(struct tty_port *port) |
1da177e4 | 1697 | { |
e936ffd5 AC |
1698 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
1699 | port); | |
9fa1b3b1 | 1700 | struct cyclades_card *card; |
02f1175c | 1701 | unsigned long flags; |
3aeea5b9 | 1702 | int channel; |
1da177e4 | 1703 | |
9fa1b3b1 | 1704 | card = info->card; |
3aeea5b9 | 1705 | channel = info->line - card->first_line; |
9fa1b3b1 | 1706 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1707 | |
2693f485 | 1708 | if (!cy_is_Z(card)) { |
02f1175c | 1709 | /* Stop accepting input */ |
3aeea5b9 JS |
1710 | cyy_writeb(info, CyCAR, channel & 0x03); |
1711 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); | |
d41861ca | 1712 | if (tty_port_initialized(&info->port)) { |
15ed6cc0 AC |
1713 | /* Waiting for on-board buffers to be empty before |
1714 | closing the port */ | |
9fa1b3b1 | 1715 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 | 1716 | cy_wait_until_sent(port->tty, info->timeout); |
9fa1b3b1 | 1717 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1718 | } |
1719 | } else { | |
1720 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1721 | /* Waiting for on-board buffers to be empty before closing |
1722 | the port */ | |
f0eefdc3 | 1723 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
1724 | int retval; |
1725 | ||
f0eefdc3 | 1726 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1727 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1728 | if (retval != 0) { |
21719191 JS |
1729 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1730 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1731 | } |
9fa1b3b1 | 1732 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1733 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1734 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1735 | } |
1da177e4 | 1736 | #endif |
02f1175c | 1737 | } |
9fa1b3b1 | 1738 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 AC |
1739 | cy_shutdown(info, port->tty); |
1740 | } | |
1da177e4 | 1741 | |
e936ffd5 AC |
1742 | /* |
1743 | * This routine is called when a particular tty device is closed. | |
1744 | */ | |
1745 | static void cy_close(struct tty_struct *tty, struct file *filp) | |
1746 | { | |
1747 | struct cyclades_port *info = tty->driver_data; | |
1748 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) | |
1749 | return; | |
1750 | tty_port_close(&info->port, tty, filp); | |
02f1175c | 1751 | } /* cy_close */ |
1da177e4 LT |
1752 | |
1753 | /* This routine gets called when tty_write has put something into | |
1754 | * the write_queue. The characters may come from user space or | |
1755 | * kernel space. | |
1756 | * | |
1757 | * This routine will return the number of characters actually | |
1758 | * accepted for writing. | |
1759 | * | |
1760 | * If the port is not already transmitting stuff, start it off by | |
1761 | * enabling interrupts. The interrupt service routine will then | |
1762 | * ensure that the characters are sent. | |
1763 | * If the port is already active, there is no need to kick it. | |
1764 | * | |
1765 | */ | |
02f1175c | 1766 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1767 | { |
cab9bdd1 | 1768 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1769 | unsigned long flags; |
1770 | int c, ret = 0; | |
1da177e4 LT |
1771 | |
1772 | #ifdef CY_DEBUG_IO | |
21719191 | 1773 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1774 | #endif |
1775 | ||
15ed6cc0 | 1776 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1777 | return 0; |
1da177e4 | 1778 | |
77451e53 | 1779 | if (!info->port.xmit_buf) |
02f1175c | 1780 | return 0; |
1da177e4 | 1781 | |
9fa1b3b1 | 1782 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1783 | while (1) { |
1a4e2351 HH |
1784 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1785 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1786 | |
1787 | if (c <= 0) | |
1788 | break; | |
1789 | ||
77451e53 | 1790 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1791 | info->xmit_head = (info->xmit_head + c) & |
1792 | (SERIAL_XMIT_SIZE - 1); | |
1793 | info->xmit_cnt += c; | |
1794 | buf += c; | |
1795 | count -= c; | |
1796 | ret += c; | |
1797 | } | |
9fa1b3b1 | 1798 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1799 | |
1800 | info->idle_stats.xmit_bytes += ret; | |
1801 | info->idle_stats.xmit_idle = jiffies; | |
1802 | ||
15ed6cc0 | 1803 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1804 | start_xmit(info); |
15ed6cc0 | 1805 | |
02f1175c JS |
1806 | return ret; |
1807 | } /* cy_write */ | |
1da177e4 LT |
1808 | |
1809 | /* | |
1810 | * This routine is called by the kernel to write a single | |
1811 | * character to the tty device. If the kernel uses this routine, | |
1812 | * it must call the flush_chars() routine (if defined) when it is | |
1813 | * done stuffing characters into the driver. If there is no room | |
1814 | * in the queue, the character is ignored. | |
1815 | */ | |
76b25a55 | 1816 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1817 | { |
cab9bdd1 | 1818 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1819 | unsigned long flags; |
1da177e4 LT |
1820 | |
1821 | #ifdef CY_DEBUG_IO | |
21719191 | 1822 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1823 | #endif |
1824 | ||
02f1175c | 1825 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1826 | return 0; |
1da177e4 | 1827 | |
77451e53 | 1828 | if (!info->port.xmit_buf) |
76b25a55 | 1829 | return 0; |
1da177e4 | 1830 | |
9fa1b3b1 | 1831 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1832 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1833 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1834 | return 0; |
02f1175c | 1835 | } |
1da177e4 | 1836 | |
77451e53 | 1837 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1838 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1839 | info->xmit_cnt++; | |
1da177e4 LT |
1840 | info->idle_stats.xmit_bytes++; |
1841 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1842 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1843 | return 1; |
02f1175c | 1844 | } /* cy_put_char */ |
1da177e4 LT |
1845 | |
1846 | /* | |
1847 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1848 | * series of characters to the tty device using put_char(). |
1da177e4 | 1849 | */ |
02f1175c | 1850 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1851 | { |
cab9bdd1 | 1852 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1853 | |
1da177e4 | 1854 | #ifdef CY_DEBUG_IO |
21719191 | 1855 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1856 | #endif |
1857 | ||
02f1175c JS |
1858 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1859 | return; | |
1da177e4 | 1860 | |
02f1175c | 1861 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1862 | !info->port.xmit_buf) |
02f1175c | 1863 | return; |
1da177e4 | 1864 | |
02f1175c JS |
1865 | start_xmit(info); |
1866 | } /* cy_flush_chars */ | |
1da177e4 LT |
1867 | |
1868 | /* | |
1869 | * This routine returns the numbers of characters the tty driver | |
1870 | * will accept for queuing to be written. This number is subject | |
1871 | * to change as output buffers get emptied, or if the output flow | |
1872 | * control is activated. | |
1873 | */ | |
02f1175c | 1874 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1875 | { |
cab9bdd1 | 1876 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1877 | int ret; |
1878 | ||
1da177e4 | 1879 | #ifdef CY_DEBUG_IO |
21719191 | 1880 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1881 | #endif |
1882 | ||
02f1175c JS |
1883 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1884 | return 0; | |
1885 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1886 | if (ret < 0) | |
1887 | ret = 0; | |
1888 | return ret; | |
1889 | } /* cy_write_room */ | |
1da177e4 | 1890 | |
02f1175c | 1891 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1892 | { |
cab9bdd1 | 1893 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1894 | |
02f1175c JS |
1895 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1896 | return 0; | |
1897 | ||
1da177e4 | 1898 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 1899 | if (!cy_is_Z(info->card)) { |
02f1175c | 1900 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 1901 | #ifdef CY_DEBUG_IO |
21719191 JS |
1902 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1903 | info->line, info->xmit_cnt); | |
1da177e4 | 1904 | #endif |
02f1175c | 1905 | return info->xmit_cnt; |
1da177e4 | 1906 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 1907 | } else { |
f0eefdc3 | 1908 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 1909 | int char_count; |
ad39c300 | 1910 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 1911 | |
db05c3b1 JS |
1912 | tx_get = readl(&buf_ctrl->tx_get); |
1913 | tx_put = readl(&buf_ctrl->tx_put); | |
1914 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
1915 | if (tx_put >= tx_get) |
1916 | char_count = tx_put - tx_get; | |
1917 | else | |
1918 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 1919 | #ifdef CY_DEBUG_IO |
21719191 JS |
1920 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1921 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 1922 | #endif |
096dcfce | 1923 | return info->xmit_cnt + char_count; |
02f1175c JS |
1924 | } |
1925 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1926 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
1927 | |
1928 | /* | |
1929 | * ------------------------------------------------------------ | |
1930 | * cy_ioctl() and friends | |
1931 | * ------------------------------------------------------------ | |
1932 | */ | |
1933 | ||
1a86b5e3 | 1934 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 1935 | { |
02f1175c | 1936 | int co, co_val, bpr; |
1a86b5e3 | 1937 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 1938 | 25000000); |
1da177e4 | 1939 | |
02f1175c JS |
1940 | if (baud == 0) { |
1941 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
1942 | return; | |
1943 | } | |
1da177e4 | 1944 | |
02f1175c JS |
1945 | /* determine which prescaler to use */ |
1946 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
1947 | if (cy_clock / co_val / baud > 63) | |
1948 | break; | |
1949 | } | |
1da177e4 | 1950 | |
02f1175c JS |
1951 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
1952 | if (bpr > 255) | |
1953 | bpr = 255; | |
1da177e4 | 1954 | |
02f1175c JS |
1955 | info->tbpr = info->rbpr = bpr; |
1956 | info->tco = info->rco = co; | |
1da177e4 LT |
1957 | } |
1958 | ||
1959 | /* | |
1960 | * This routine finds or computes the various line characteristics. | |
1961 | * It used to be called config_setup | |
1962 | */ | |
d13549f8 | 1963 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1964 | { |
875b206b | 1965 | struct cyclades_card *card; |
02f1175c | 1966 | unsigned long flags; |
3aeea5b9 | 1967 | int channel; |
02f1175c | 1968 | unsigned cflag, iflag; |
02f1175c JS |
1969 | int baud, baud_rate = 0; |
1970 | int i; | |
1971 | ||
15ed6cc0 | 1972 | if (info->line == -1) |
02f1175c | 1973 | return; |
15ed6cc0 | 1974 | |
adc8d746 AC |
1975 | cflag = tty->termios.c_cflag; |
1976 | iflag = tty->termios.c_iflag; | |
1da177e4 | 1977 | |
02f1175c JS |
1978 | /* |
1979 | * Set up the tty->alt_speed kludge | |
1980 | */ | |
d13549f8 JS |
1981 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
1982 | tty->alt_speed = 57600; | |
1983 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
1984 | tty->alt_speed = 115200; | |
1985 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
1986 | tty->alt_speed = 230400; | |
1987 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
1988 | tty->alt_speed = 460800; | |
02f1175c JS |
1989 | |
1990 | card = info->card; | |
875b206b | 1991 | channel = info->line - card->first_line; |
02f1175c | 1992 | |
2693f485 | 1993 | if (!cy_is_Z(card)) { |
46fb7825 JS |
1994 | u32 cflags; |
1995 | ||
02f1175c | 1996 | /* baud rate */ |
d13549f8 | 1997 | baud = tty_get_baud_rate(tty); |
77451e53 | 1998 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
1999 | ASYNC_SPD_CUST) { |
2000 | if (info->custom_divisor) | |
2001 | baud_rate = info->baud / info->custom_divisor; | |
2002 | else | |
2003 | baud_rate = info->baud; | |
2004 | } else if (baud > CD1400_MAX_SPEED) { | |
2005 | baud = CD1400_MAX_SPEED; | |
2006 | } | |
2007 | /* find the baud index */ | |
2008 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 2009 | if (baud == baud_table[i]) |
02f1175c | 2010 | break; |
02f1175c | 2011 | } |
15ed6cc0 | 2012 | if (i == 20) |
02f1175c | 2013 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2014 | |
77451e53 | 2015 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2016 | ASYNC_SPD_CUST) { |
2017 | cyy_baud_calc(info, baud_rate); | |
2018 | } else { | |
2019 | if (info->chip_rev >= CD1400_REV_J) { | |
2020 | /* It is a CD1400 rev. J or later */ | |
2021 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2022 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2023 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2024 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2025 | } else { | |
2026 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2027 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2028 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2029 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2030 | } | |
2031 | } | |
2032 | if (baud_table[i] == 134) { | |
2033 | /* get it right for 134.5 baud */ | |
2034 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2035 | 2; | |
77451e53 | 2036 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2037 | ASYNC_SPD_CUST) { |
2038 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2039 | baud_rate) + 2; | |
2040 | } else if (baud_table[i]) { | |
2041 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2042 | baud_table[i]) + 2; | |
2043 | /* this needs to be propagated into the card info */ | |
2044 | } else { | |
2045 | info->timeout = 0; | |
2046 | } | |
2047 | /* By tradition (is it a standard?) a baud rate of zero | |
2048 | implies the line should be/has been closed. A bit | |
2049 | later in this routine such a test is performed. */ | |
2050 | ||
2051 | /* byte size and parity */ | |
2052 | info->cor5 = 0; | |
2053 | info->cor4 = 0; | |
2054 | /* receive threshold */ | |
2055 | info->cor3 = (info->default_threshold ? | |
2056 | info->default_threshold : baud_cor3[i]); | |
2057 | info->cor2 = CyETC; | |
2058 | switch (cflag & CSIZE) { | |
2059 | case CS5: | |
2060 | info->cor1 = Cy_5_BITS; | |
2061 | break; | |
2062 | case CS6: | |
2063 | info->cor1 = Cy_6_BITS; | |
2064 | break; | |
2065 | case CS7: | |
2066 | info->cor1 = Cy_7_BITS; | |
2067 | break; | |
2068 | case CS8: | |
2069 | info->cor1 = Cy_8_BITS; | |
2070 | break; | |
2071 | } | |
15ed6cc0 | 2072 | if (cflag & CSTOPB) |
02f1175c | 2073 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2074 | |
02f1175c | 2075 | if (cflag & PARENB) { |
15ed6cc0 | 2076 | if (cflag & PARODD) |
02f1175c | 2077 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2078 | else |
02f1175c | 2079 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2080 | } else |
02f1175c | 2081 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2082 | |
2083 | /* CTS flow control flag */ | |
5604a98e PH |
2084 | tty_port_set_cts_flow(&info->port, cflag & CRTSCTS); |
2085 | if (cflag & CRTSCTS) | |
02f1175c | 2086 | info->cor2 |= CyCtsAE; |
5604a98e | 2087 | else |
02f1175c | 2088 | info->cor2 &= ~CyCtsAE; |
2d68655d | 2089 | tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL); |
1da177e4 LT |
2090 | |
2091 | /*********************************************** | |
2092 | The hardware option, CyRtsAO, presents RTS when | |
2093 | the chip has characters to send. Since most modems | |
2094 | use RTS as reverse (inbound) flow control, this | |
2095 | option is not used. If inbound flow control is | |
2096 | necessary, DTR can be programmed to provide the | |
2097 | appropriate signals for use with a non-standard | |
2098 | cable. Contact Marcio Saito for details. | |
2099 | ***********************************************/ | |
2100 | ||
02f1175c | 2101 | channel &= 0x03; |
1da177e4 | 2102 | |
9fa1b3b1 | 2103 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2104 | cyy_writeb(info, CyCAR, channel); |
02f1175c JS |
2105 | |
2106 | /* tx and rx baud rate */ | |
2107 | ||
3aeea5b9 JS |
2108 | cyy_writeb(info, CyTCOR, info->tco); |
2109 | cyy_writeb(info, CyTBPR, info->tbpr); | |
2110 | cyy_writeb(info, CyRCOR, info->rco); | |
2111 | cyy_writeb(info, CyRBPR, info->rbpr); | |
02f1175c JS |
2112 | |
2113 | /* set line characteristics according configuration */ | |
2114 | ||
3aeea5b9 JS |
2115 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
2116 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); | |
2117 | cyy_writeb(info, CyCOR1, info->cor1); | |
2118 | cyy_writeb(info, CyCOR2, info->cor2); | |
2119 | cyy_writeb(info, CyCOR3, info->cor3); | |
2120 | cyy_writeb(info, CyCOR4, info->cor4); | |
2121 | cyy_writeb(info, CyCOR5, info->cor5); | |
02f1175c | 2122 | |
3aeea5b9 JS |
2123 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
2124 | CyCOR3ch); | |
02f1175c | 2125 | |
15ed6cc0 | 2126 | /* !!! Is this needed? */ |
3aeea5b9 JS |
2127 | cyy_writeb(info, CyCAR, channel); |
2128 | cyy_writeb(info, CyRTPR, | |
02f1175c JS |
2129 | (info->default_timeout ? info->default_timeout : 0x02)); |
2130 | /* 10ms rx timeout */ | |
2131 | ||
46fb7825 JS |
2132 | cflags = CyCTS; |
2133 | if (!C_CLOCAL(tty)) | |
2134 | cflags |= CyDSR | CyRI | CyDCD; | |
2135 | /* without modem intr */ | |
2136 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); | |
2137 | /* act on 1->0 modem transitions */ | |
2138 | if ((cflag & CRTSCTS) && info->rflow) | |
2139 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); | |
2140 | else | |
2141 | cyy_writeb(info, CyMCOR1, cflags); | |
2142 | /* act on 0->1 modem transitions */ | |
2143 | cyy_writeb(info, CyMCOR2, cflags); | |
02f1175c | 2144 | |
4d768200 JS |
2145 | if (i == 0) /* baud rate is zero, turn off line */ |
2146 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2147 | else | |
2148 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2149 | |
d13549f8 | 2150 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2151 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2152 | |
1da177e4 | 2153 | } else { |
f0eefdc3 | 2154 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2155 | __u32 sw_flow; |
02f1175c | 2156 | int retval; |
1da177e4 | 2157 | |
2693f485 | 2158 | if (!cyz_is_loaded(card)) |
02f1175c | 2159 | return; |
1da177e4 | 2160 | |
02f1175c | 2161 | /* baud rate */ |
d13549f8 | 2162 | baud = tty_get_baud_rate(tty); |
77451e53 | 2163 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2164 | ASYNC_SPD_CUST) { |
2165 | if (info->custom_divisor) | |
2166 | baud_rate = info->baud / info->custom_divisor; | |
2167 | else | |
2168 | baud_rate = info->baud; | |
2169 | } else if (baud > CYZ_MAX_SPEED) { | |
2170 | baud = CYZ_MAX_SPEED; | |
2171 | } | |
2172 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2173 | ||
2174 | if (baud == 134) { | |
2175 | /* get it right for 134.5 baud */ | |
2176 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2177 | 2; | |
77451e53 | 2178 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2179 | ASYNC_SPD_CUST) { |
2180 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2181 | baud_rate) + 2; | |
2182 | } else if (baud) { | |
2183 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2184 | baud) + 2; | |
2185 | /* this needs to be propagated into the card info */ | |
2186 | } else { | |
2187 | info->timeout = 0; | |
2188 | } | |
1da177e4 | 2189 | |
02f1175c JS |
2190 | /* byte size and parity */ |
2191 | switch (cflag & CSIZE) { | |
2192 | case CS5: | |
2193 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2194 | break; | |
2195 | case CS6: | |
2196 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2197 | break; | |
2198 | case CS7: | |
2199 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2200 | break; | |
2201 | case CS8: | |
2202 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2203 | break; | |
2204 | } | |
2205 | if (cflag & CSTOPB) { | |
2206 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2207 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2208 | } else { |
2209 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2210 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2211 | } |
2212 | if (cflag & PARENB) { | |
15ed6cc0 | 2213 | if (cflag & PARODD) |
02f1175c | 2214 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2215 | else |
02f1175c | 2216 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2217 | } else |
02f1175c | 2218 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2219 | |
02f1175c JS |
2220 | /* CTS flow control flag */ |
2221 | if (cflag & CRTSCTS) { | |
2222 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2223 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2224 | } else { |
db05c3b1 JS |
2225 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2226 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2227 | } |
2228 | /* As the HW flow control is done in firmware, the driver | |
2229 | doesn't need to care about it */ | |
5604a98e | 2230 | tty_port_set_cts_flow(&info->port, 0); |
02f1175c JS |
2231 | |
2232 | /* XON/XOFF/XANY flow control flags */ | |
2233 | sw_flow = 0; | |
2234 | if (iflag & IXON) { | |
2235 | sw_flow |= C_FL_OXX; | |
2236 | if (iflag & IXANY) | |
2237 | sw_flow |= C_FL_OIXANY; | |
2238 | } | |
2239 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2240 | ||
875b206b | 2241 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2242 | if (retval != 0) { |
21719191 JS |
2243 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2244 | "was %x\n", info->line, retval); | |
02f1175c JS |
2245 | } |
2246 | ||
2247 | /* CD sensitivity */ | |
2d68655d | 2248 | tty_port_set_check_carrier(&info->port, ~cflag & CLOCAL); |
1da177e4 | 2249 | |
02f1175c JS |
2250 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2251 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2252 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2253 | #ifdef CY_DEBUG_DTR |
21719191 | 2254 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2255 | #endif |
02f1175c JS |
2256 | } else { |
2257 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2258 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2259 | #ifdef CY_DEBUG_DTR |
21719191 | 2260 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2261 | #endif |
02f1175c | 2262 | } |
1da177e4 | 2263 | |
15ed6cc0 | 2264 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2265 | if (retval != 0) { |
21719191 JS |
2266 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2267 | "was %x\n", info->line, retval); | |
02f1175c | 2268 | } |
1da177e4 | 2269 | |
d13549f8 | 2270 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2271 | } |
02f1175c | 2272 | } /* set_line_char */ |
1da177e4 | 2273 | |
6c28181c | 2274 | static int cy_get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 2275 | struct serial_struct __user *retinfo) |
1da177e4 | 2276 | { |
875b206b | 2277 | struct cyclades_card *cinfo = info->card; |
6c28181c JS |
2278 | struct serial_struct tmp = { |
2279 | .type = info->type, | |
2280 | .line = info->line, | |
2281 | .port = (info->card - cy_card) * 0x100 + info->line - | |
2282 | cinfo->first_line, | |
2283 | .irq = cinfo->irq, | |
2284 | .flags = info->port.flags, | |
2285 | .close_delay = info->port.close_delay, | |
2286 | .closing_wait = info->port.closing_wait, | |
2287 | .baud_base = info->baud, | |
2288 | .custom_divisor = info->custom_divisor, | |
6c28181c | 2289 | }; |
02f1175c | 2290 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
6c28181c | 2291 | } |
1da177e4 LT |
2292 | |
2293 | static int | |
d13549f8 | 2294 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
15ed6cc0 | 2295 | struct serial_struct __user *new_info) |
1da177e4 | 2296 | { |
02f1175c | 2297 | struct serial_struct new_serial; |
25c3cdf8 | 2298 | int ret; |
02f1175c JS |
2299 | |
2300 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2301 | return -EFAULT; | |
02f1175c | 2302 | |
25c3cdf8 | 2303 | mutex_lock(&info->port.mutex); |
02f1175c | 2304 | if (!capable(CAP_SYS_ADMIN)) { |
44b7d1b3 | 2305 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
2306 | new_serial.baud_base != info->baud || |
2307 | (new_serial.flags & ASYNC_FLAGS & | |
2308 | ~ASYNC_USR_MASK) != | |
77451e53 | 2309 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
25c3cdf8 AC |
2310 | { |
2311 | mutex_unlock(&info->port.mutex); | |
02f1175c | 2312 | return -EPERM; |
25c3cdf8 | 2313 | } |
77451e53 | 2314 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
2315 | (new_serial.flags & ASYNC_USR_MASK); |
2316 | info->baud = new_serial.baud_base; | |
2317 | info->custom_divisor = new_serial.custom_divisor; | |
2318 | goto check_and_exit; | |
2319 | } | |
2320 | ||
2321 | /* | |
2322 | * OK, past this point, all the error checking has been done. | |
2323 | * At this point, we start making changes..... | |
2324 | */ | |
2325 | ||
2326 | info->baud = new_serial.baud_base; | |
2327 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 2328 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 2329 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
2330 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
2331 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
2332 | |
2333 | check_and_exit: | |
d41861ca | 2334 | if (tty_port_initialized(&info->port)) { |
d13549f8 | 2335 | cy_set_line_char(info, tty); |
25c3cdf8 | 2336 | ret = 0; |
02f1175c | 2337 | } else { |
25c3cdf8 | 2338 | ret = cy_startup(info, tty); |
02f1175c | 2339 | } |
25c3cdf8 AC |
2340 | mutex_unlock(&info->port.mutex); |
2341 | return ret; | |
02f1175c | 2342 | } /* set_serial_info */ |
1da177e4 LT |
2343 | |
2344 | /* | |
2345 | * get_lsr_info - get line status register info | |
2346 | * | |
2347 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2348 | * is emptied. On bus types like RS485, the transmitter must | |
2349 | * release the bus after transmitting. This must be done when | |
2350 | * the transmit shift register is empty, not be done when the | |
2351 | * transmit holding register is empty. This functionality | |
2352 | * allows an RS485 driver to be written in user space. | |
2353 | */ | |
15ed6cc0 | 2354 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2355 | { |
3aeea5b9 | 2356 | struct cyclades_card *card = info->card; |
02f1175c JS |
2357 | unsigned int result; |
2358 | unsigned long flags; | |
3aeea5b9 | 2359 | u8 status; |
1da177e4 | 2360 | |
2693f485 | 2361 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2362 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2363 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2364 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2365 | result = (status ? 0 : TIOCSER_TEMT); |
2366 | } else { | |
2367 | /* Not supported yet */ | |
2368 | return -EINVAL; | |
2369 | } | |
dbca36ea | 2370 | return put_user(result, value); |
1da177e4 LT |
2371 | } |
2372 | ||
60b33c13 | 2373 | static int cy_tiocmget(struct tty_struct *tty) |
1da177e4 | 2374 | { |
cab9bdd1 | 2375 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2376 | struct cyclades_card *card; |
3aeea5b9 | 2377 | int result; |
02f1175c | 2378 | |
bf9d8929 | 2379 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2380 | return -ENODEV; |
1da177e4 | 2381 | |
02f1175c | 2382 | card = info->card; |
0d348729 | 2383 | |
2693f485 | 2384 | if (!cy_is_Z(card)) { |
0d348729 | 2385 | unsigned long flags; |
3aeea5b9 JS |
2386 | int channel = info->line - card->first_line; |
2387 | u8 status; | |
1da177e4 | 2388 | |
9fa1b3b1 | 2389 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2390 | cyy_writeb(info, CyCAR, channel & 0x03); |
2391 | status = cyy_readb(info, CyMSVR1); | |
2392 | status |= cyy_readb(info, CyMSVR2); | |
9fa1b3b1 | 2393 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2394 | |
2395 | if (info->rtsdtr_inv) { | |
2396 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2397 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2398 | } else { | |
2399 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2400 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2401 | } | |
2402 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2403 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2404 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2405 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2406 | } else { |
0d348729 JS |
2407 | u32 lstatus; |
2408 | ||
2409 | if (!cyz_is_loaded(card)) { | |
2410 | result = -ENODEV; | |
2411 | goto end; | |
02f1175c | 2412 | } |
1da177e4 | 2413 | |
0d348729 JS |
2414 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
2415 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | | |
2416 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2417 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2418 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2419 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2420 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
02f1175c | 2421 | } |
0d348729 | 2422 | end: |
02f1175c JS |
2423 | return result; |
2424 | } /* cy_tiomget */ | |
1da177e4 LT |
2425 | |
2426 | static int | |
20b9d177 | 2427 | cy_tiocmset(struct tty_struct *tty, |
02f1175c | 2428 | unsigned int set, unsigned int clear) |
1da177e4 | 2429 | { |
cab9bdd1 | 2430 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2431 | struct cyclades_card *card; |
02f1175c | 2432 | unsigned long flags; |
02f1175c | 2433 | |
bf9d8929 | 2434 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2435 | return -ENODEV; |
2436 | ||
2437 | card = info->card; | |
2693f485 | 2438 | if (!cy_is_Z(card)) { |
4d768200 JS |
2439 | spin_lock_irqsave(&card->card_lock, flags); |
2440 | cyy_change_rts_dtr(info, set, clear); | |
2441 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2442 | } else { |
0d348729 JS |
2443 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
2444 | int retval, channel = info->line - card->first_line; | |
2445 | u32 rs; | |
2446 | ||
2447 | if (!cyz_is_loaded(card)) | |
2448 | return -ENODEV; | |
2449 | ||
2450 | spin_lock_irqsave(&card->card_lock, flags); | |
2451 | rs = readl(&ch_ctrl->rs_control); | |
2452 | if (set & TIOCM_RTS) | |
2453 | rs |= C_RS_RTS; | |
2454 | if (clear & TIOCM_RTS) | |
2455 | rs &= ~C_RS_RTS; | |
2456 | if (set & TIOCM_DTR) { | |
2457 | rs |= C_RS_DTR; | |
1da177e4 | 2458 | #ifdef CY_DEBUG_DTR |
0d348729 | 2459 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
1da177e4 | 2460 | #endif |
0d348729 JS |
2461 | } |
2462 | if (clear & TIOCM_DTR) { | |
2463 | rs &= ~C_RS_DTR; | |
1da177e4 | 2464 | #ifdef CY_DEBUG_DTR |
0d348729 JS |
2465 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2466 | "Z DTR\n"); | |
1da177e4 | 2467 | #endif |
02f1175c | 2468 | } |
0d348729 | 2469 | cy_writel(&ch_ctrl->rs_control, rs); |
9fa1b3b1 | 2470 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
0d348729 | 2471 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2472 | if (retval != 0) { |
21719191 JS |
2473 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2474 | "was %x\n", info->line, retval); | |
02f1175c | 2475 | } |
1da177e4 | 2476 | } |
02f1175c | 2477 | return 0; |
0d348729 | 2478 | } |
1da177e4 LT |
2479 | |
2480 | /* | |
2481 | * cy_break() --- routine which turns the break handling on or off | |
2482 | */ | |
9e98966c | 2483 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2484 | { |
cab9bdd1 | 2485 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2486 | struct cyclades_card *card; |
02f1175c | 2487 | unsigned long flags; |
9e98966c | 2488 | int retval = 0; |
1da177e4 | 2489 | |
02f1175c | 2490 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2491 | return -EINVAL; |
1da177e4 | 2492 | |
9fa1b3b1 JS |
2493 | card = info->card; |
2494 | ||
2495 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2496 | if (!cy_is_Z(card)) { |
02f1175c JS |
2497 | /* Let the transmit ISR take care of this (since it |
2498 | requires stuffing characters into the output stream). | |
2499 | */ | |
2500 | if (break_state == -1) { | |
2501 | if (!info->breakon) { | |
2502 | info->breakon = 1; | |
2503 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2504 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2505 | start_xmit(info); |
9fa1b3b1 | 2506 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2507 | } |
2508 | } | |
2509 | } else { | |
2510 | if (!info->breakoff) { | |
2511 | info->breakoff = 1; | |
2512 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2513 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2514 | start_xmit(info); |
9fa1b3b1 | 2515 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2516 | } |
2517 | } | |
1da177e4 | 2518 | } |
1da177e4 | 2519 | } else { |
02f1175c | 2520 | if (break_state == -1) { |
9fa1b3b1 JS |
2521 | retval = cyz_issue_cmd(card, |
2522 | info->line - card->first_line, | |
02f1175c JS |
2523 | C_CM_SET_BREAK, 0L); |
2524 | if (retval != 0) { | |
21719191 JS |
2525 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2526 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2527 | } |
2528 | } else { | |
9fa1b3b1 JS |
2529 | retval = cyz_issue_cmd(card, |
2530 | info->line - card->first_line, | |
02f1175c JS |
2531 | C_CM_CLR_BREAK, 0L); |
2532 | if (retval != 0) { | |
21719191 JS |
2533 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2534 | "on ttyC%d was %x\n", info->line, | |
2535 | retval); | |
02f1175c | 2536 | } |
1da177e4 | 2537 | } |
1da177e4 | 2538 | } |
9fa1b3b1 | 2539 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2540 | return retval; |
02f1175c | 2541 | } /* cy_break */ |
1da177e4 | 2542 | |
02f1175c | 2543 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2544 | { |
3aeea5b9 | 2545 | struct cyclades_card *card = info->card; |
02f1175c | 2546 | unsigned long flags; |
1da177e4 | 2547 | |
2693f485 | 2548 | if (!cy_is_Z(card)) { |
02f1175c JS |
2549 | info->cor3 &= ~CyREC_FIFO; |
2550 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2551 | |
9fa1b3b1 | 2552 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2553 | cyy_writeb(info, CyCOR3, info->cor3); |
2554 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); | |
9fa1b3b1 | 2555 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2556 | } |
2557 | return 0; | |
2558 | } /* set_threshold */ | |
1da177e4 | 2559 | |
15ed6cc0 AC |
2560 | static int get_threshold(struct cyclades_port *info, |
2561 | unsigned long __user *value) | |
1da177e4 | 2562 | { |
3aeea5b9 | 2563 | struct cyclades_card *card = info->card; |
1da177e4 | 2564 | |
2693f485 | 2565 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2566 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
02f1175c | 2567 | return put_user(tmp, value); |
02f1175c | 2568 | } |
f7429034 | 2569 | return 0; |
02f1175c | 2570 | } /* get_threshold */ |
1da177e4 | 2571 | |
02f1175c | 2572 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2573 | { |
3aeea5b9 | 2574 | struct cyclades_card *card = info->card; |
02f1175c | 2575 | unsigned long flags; |
1da177e4 | 2576 | |
2693f485 | 2577 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2578 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2579 | cyy_writeb(info, CyRTPR, value & 0xff); |
9fa1b3b1 | 2580 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2581 | } |
2582 | return 0; | |
2583 | } /* set_timeout */ | |
1da177e4 | 2584 | |
15ed6cc0 AC |
2585 | static int get_timeout(struct cyclades_port *info, |
2586 | unsigned long __user *value) | |
1da177e4 | 2587 | { |
3aeea5b9 | 2588 | struct cyclades_card *card = info->card; |
1da177e4 | 2589 | |
2693f485 | 2590 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2591 | u8 tmp = cyy_readb(info, CyRTPR); |
02f1175c | 2592 | return put_user(tmp, value); |
02f1175c | 2593 | } |
f7429034 | 2594 | return 0; |
02f1175c | 2595 | } /* get_timeout */ |
1da177e4 | 2596 | |
6c28181c JS |
2597 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2598 | struct cyclades_icount *cprev) | |
1da177e4 | 2599 | { |
6c28181c JS |
2600 | struct cyclades_icount cnow; |
2601 | unsigned long flags; | |
2602 | int ret; | |
1da177e4 | 2603 | |
6c28181c JS |
2604 | spin_lock_irqsave(&info->card->card_lock, flags); |
2605 | cnow = info->icount; /* atomic copy */ | |
2606 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2607 | ||
2608 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2609 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2610 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2611 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2612 | ||
2613 | *cprev = cnow; | |
2614 | ||
2615 | return ret; | |
2616 | } | |
1da177e4 LT |
2617 | |
2618 | /* | |
2619 | * This routine allows the tty driver to implement device- | |
2620 | * specific ioctl's. If the ioctl number passed in cmd is | |
2621 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2622 | */ | |
2623 | static int | |
6caa76b7 | 2624 | cy_ioctl(struct tty_struct *tty, |
02f1175c | 2625 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2626 | { |
cab9bdd1 | 2627 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2628 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2629 | int ret_val = 0; |
2630 | unsigned long flags; | |
2631 | void __user *argp = (void __user *)arg; | |
2632 | ||
2633 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2634 | return -ENODEV; | |
1da177e4 LT |
2635 | |
2636 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2637 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2638 | info->line, cmd, arg); | |
1da177e4 LT |
2639 | #endif |
2640 | ||
02f1175c JS |
2641 | switch (cmd) { |
2642 | case CYGETMON: | |
6c28181c JS |
2643 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2644 | ret_val = -EFAULT; | |
2645 | break; | |
2646 | } | |
2647 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2648 | break; |
2649 | case CYGETTHRESH: | |
2650 | ret_val = get_threshold(info, argp); | |
2651 | break; | |
2652 | case CYSETTHRESH: | |
2653 | ret_val = set_threshold(info, arg); | |
2654 | break; | |
2655 | case CYGETDEFTHRESH: | |
6c28181c JS |
2656 | ret_val = put_user(info->default_threshold, |
2657 | (unsigned long __user *)argp); | |
02f1175c JS |
2658 | break; |
2659 | case CYSETDEFTHRESH: | |
6c28181c | 2660 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2661 | break; |
2662 | case CYGETTIMEOUT: | |
2663 | ret_val = get_timeout(info, argp); | |
2664 | break; | |
2665 | case CYSETTIMEOUT: | |
2666 | ret_val = set_timeout(info, arg); | |
2667 | break; | |
2668 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2669 | ret_val = put_user(info->default_timeout, |
2670 | (unsigned long __user *)argp); | |
02f1175c JS |
2671 | break; |
2672 | case CYSETDEFTIMEOUT: | |
6c28181c | 2673 | info->default_timeout = arg & 0xff; |
02f1175c | 2674 | break; |
1da177e4 | 2675 | case CYSETRFLOW: |
02f1175c | 2676 | info->rflow = (int)arg; |
02f1175c | 2677 | break; |
1da177e4 | 2678 | case CYGETRFLOW: |
02f1175c JS |
2679 | ret_val = info->rflow; |
2680 | break; | |
1da177e4 | 2681 | case CYSETRTSDTR_INV: |
02f1175c | 2682 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2683 | break; |
1da177e4 | 2684 | case CYGETRTSDTR_INV: |
02f1175c JS |
2685 | ret_val = info->rtsdtr_inv; |
2686 | break; | |
1da177e4 | 2687 | case CYGETCD1400VER: |
02f1175c JS |
2688 | ret_val = info->chip_rev; |
2689 | break; | |
1da177e4 LT |
2690 | #ifndef CONFIG_CYZ_INTR |
2691 | case CYZSETPOLLCYCLE: | |
351d6204 QX |
2692 | if (arg > LONG_MAX / HZ) |
2693 | return -ENODEV; | |
02f1175c | 2694 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2695 | break; |
1da177e4 | 2696 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2697 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2698 | break; | |
2699 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2700 | case CYSETWAIT: |
44b7d1b3 | 2701 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2702 | break; |
1da177e4 | 2703 | case CYGETWAIT: |
44b7d1b3 | 2704 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
2705 | break; |
2706 | case TIOCGSERIAL: | |
6c28181c | 2707 | ret_val = cy_get_serial_info(info, argp); |
02f1175c JS |
2708 | break; |
2709 | case TIOCSSERIAL: | |
d13549f8 | 2710 | ret_val = cy_set_serial_info(info, tty, argp); |
02f1175c JS |
2711 | break; |
2712 | case TIOCSERGETLSR: /* Get line status register */ | |
2713 | ret_val = get_lsr_info(info, argp); | |
2714 | break; | |
2715 | /* | |
2716 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2717 | * - mask passed in arg for lines of interest | |
2718 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2719 | * Caller should use TIOCGICOUNT to see which one it was | |
2720 | */ | |
1da177e4 | 2721 | case TIOCMIWAIT: |
9fa1b3b1 | 2722 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2723 | /* note the counters on entry */ |
2c7fea99 | 2724 | cnow = info->icount; |
9fa1b3b1 | 2725 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
bdc04e31 | 2726 | ret_val = wait_event_interruptible(info->port.delta_msr_wait, |
6c28181c | 2727 | cy_cflags_changed(info, arg, &cnow)); |
2c7fea99 | 2728 | break; |
1da177e4 | 2729 | |
02f1175c JS |
2730 | /* |
2731 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2732 | * Return: write counters to the user passed counter struct | |
2733 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2734 | * RI where only 0->1 is counted. | |
2735 | */ | |
02f1175c JS |
2736 | default: |
2737 | ret_val = -ENOIOCTLCMD; | |
2738 | } | |
1da177e4 LT |
2739 | |
2740 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2741 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2742 | #endif |
02f1175c JS |
2743 | return ret_val; |
2744 | } /* cy_ioctl */ | |
1da177e4 | 2745 | |
0587102c AC |
2746 | static int cy_get_icount(struct tty_struct *tty, |
2747 | struct serial_icounter_struct *sic) | |
2748 | { | |
2749 | struct cyclades_port *info = tty->driver_data; | |
2750 | struct cyclades_icount cnow; /* Used to snapshot */ | |
2751 | unsigned long flags; | |
2752 | ||
2753 | spin_lock_irqsave(&info->card->card_lock, flags); | |
2754 | cnow = info->icount; | |
2755 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2756 | ||
2757 | sic->cts = cnow.cts; | |
2758 | sic->dsr = cnow.dsr; | |
2759 | sic->rng = cnow.rng; | |
2760 | sic->dcd = cnow.dcd; | |
2761 | sic->rx = cnow.rx; | |
2762 | sic->tx = cnow.tx; | |
2763 | sic->frame = cnow.frame; | |
2764 | sic->overrun = cnow.overrun; | |
2765 | sic->parity = cnow.parity; | |
2766 | sic->brk = cnow.brk; | |
2767 | sic->buf_overrun = cnow.buf_overrun; | |
2768 | return 0; | |
2769 | } | |
2770 | ||
1da177e4 LT |
2771 | /* |
2772 | * This routine allows the tty driver to be notified when | |
2773 | * device's termios settings have changed. Note that a | |
2774 | * well-designed tty driver should be prepared to accept the case | |
2775 | * where old == NULL, and try to do something rational. | |
2776 | */ | |
02f1175c | 2777 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2778 | { |
cab9bdd1 | 2779 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2780 | |
2781 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2782 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2783 | #endif |
2784 | ||
d13549f8 | 2785 | cy_set_line_char(info, tty); |
02f1175c | 2786 | |
9db276f8 | 2787 | if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) { |
02f1175c JS |
2788 | tty->hw_stopped = 0; |
2789 | cy_start(tty); | |
2790 | } | |
1da177e4 | 2791 | #if 0 |
02f1175c JS |
2792 | /* |
2793 | * No need to wake up processes in open wait, since they | |
2794 | * sample the CLOCAL flag once, and don't recheck it. | |
2795 | * XXX It's not clear whether the current behavior is correct | |
2796 | * or not. Hence, this may change..... | |
2797 | */ | |
9db276f8 | 2798 | if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) |
77451e53 | 2799 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 2800 | #endif |
02f1175c | 2801 | } /* cy_set_termios */ |
1da177e4 LT |
2802 | |
2803 | /* This function is used to send a high-priority XON/XOFF character to | |
2804 | the device. | |
2805 | */ | |
02f1175c | 2806 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 2807 | { |
cab9bdd1 | 2808 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2809 | struct cyclades_card *card; |
2810 | int channel; | |
1da177e4 | 2811 | |
02f1175c | 2812 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
2813 | return; |
2814 | ||
02f1175c | 2815 | info->x_char = ch; |
1da177e4 LT |
2816 | |
2817 | if (ch) | |
02f1175c | 2818 | cy_start(tty); |
1da177e4 LT |
2819 | |
2820 | card = info->card; | |
875b206b | 2821 | channel = info->line - card->first_line; |
1da177e4 | 2822 | |
2693f485 | 2823 | if (cy_is_Z(card)) { |
02f1175c | 2824 | if (ch == STOP_CHAR(tty)) |
875b206b | 2825 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 2826 | else if (ch == START_CHAR(tty)) |
875b206b | 2827 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
2828 | } |
2829 | } | |
2830 | ||
2831 | /* This routine is called by the upper-layer tty layer to signal | |
2832 | that incoming characters should be throttled because the input | |
2833 | buffers are close to full. | |
2834 | */ | |
02f1175c | 2835 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 2836 | { |
cab9bdd1 | 2837 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2838 | struct cyclades_card *card; |
02f1175c | 2839 | unsigned long flags; |
1da177e4 LT |
2840 | |
2841 | #ifdef CY_DEBUG_THROTTLE | |
fdfb719e PH |
2842 | printk(KERN_DEBUG "cyc:throttle %s ...ttyC%d\n", tty_name(tty), |
2843 | info->line); | |
1da177e4 LT |
2844 | #endif |
2845 | ||
15ed6cc0 | 2846 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 2847 | return; |
02f1175c JS |
2848 | |
2849 | card = info->card; | |
2850 | ||
2851 | if (I_IXOFF(tty)) { | |
2693f485 | 2852 | if (!cy_is_Z(card)) |
02f1175c JS |
2853 | cy_send_xchar(tty, STOP_CHAR(tty)); |
2854 | else | |
2855 | info->throttle = 1; | |
2856 | } | |
1da177e4 | 2857 | |
9db276f8 | 2858 | if (C_CRTSCTS(tty)) { |
2693f485 | 2859 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2860 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2861 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 2862 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2863 | } else { |
2864 | info->throttle = 1; | |
2865 | } | |
2866 | } | |
02f1175c | 2867 | } /* cy_throttle */ |
1da177e4 LT |
2868 | |
2869 | /* | |
2870 | * This routine notifies the tty driver that it should signal | |
2871 | * that characters can now be sent to the tty without fear of | |
2872 | * overrunning the input buffers of the line disciplines. | |
2873 | */ | |
02f1175c | 2874 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 2875 | { |
cab9bdd1 | 2876 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2877 | struct cyclades_card *card; |
02f1175c | 2878 | unsigned long flags; |
1da177e4 LT |
2879 | |
2880 | #ifdef CY_DEBUG_THROTTLE | |
fdfb719e PH |
2881 | printk(KERN_DEBUG "cyc:unthrottle %s ...ttyC%d\n", |
2882 | tty_name(tty), info->line); | |
1da177e4 LT |
2883 | #endif |
2884 | ||
15ed6cc0 | 2885 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 2886 | return; |
1da177e4 | 2887 | |
02f1175c JS |
2888 | if (I_IXOFF(tty)) { |
2889 | if (info->x_char) | |
2890 | info->x_char = 0; | |
2891 | else | |
2892 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 2893 | } |
1da177e4 | 2894 | |
9db276f8 | 2895 | if (C_CRTSCTS(tty)) { |
02f1175c | 2896 | card = info->card; |
2693f485 | 2897 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2898 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2899 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 2900 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2901 | } else { |
2902 | info->throttle = 0; | |
2903 | } | |
2904 | } | |
02f1175c | 2905 | } /* cy_unthrottle */ |
1da177e4 LT |
2906 | |
2907 | /* cy_start and cy_stop provide software output flow control as a | |
2908 | function of XON/XOFF, software CTS, and other such stuff. | |
2909 | */ | |
02f1175c | 2910 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 2911 | { |
02f1175c | 2912 | struct cyclades_card *cinfo; |
cab9bdd1 | 2913 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2914 | int channel; |
02f1175c | 2915 | unsigned long flags; |
1da177e4 LT |
2916 | |
2917 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2918 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
2919 | #endif |
2920 | ||
02f1175c JS |
2921 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
2922 | return; | |
1da177e4 | 2923 | |
875b206b | 2924 | cinfo = info->card; |
02f1175c | 2925 | channel = info->line - cinfo->first_line; |
2693f485 | 2926 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2927 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2928 | cyy_writeb(info, CyCAR, channel & 0x03); |
2929 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); | |
9fa1b3b1 | 2930 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2931 | } |
02f1175c | 2932 | } /* cy_stop */ |
1da177e4 | 2933 | |
02f1175c | 2934 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 2935 | { |
02f1175c | 2936 | struct cyclades_card *cinfo; |
cab9bdd1 | 2937 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2938 | int channel; |
02f1175c | 2939 | unsigned long flags; |
1da177e4 LT |
2940 | |
2941 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2942 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
2943 | #endif |
2944 | ||
02f1175c JS |
2945 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
2946 | return; | |
1da177e4 | 2947 | |
875b206b | 2948 | cinfo = info->card; |
02f1175c | 2949 | channel = info->line - cinfo->first_line; |
2693f485 | 2950 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2951 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2952 | cyy_writeb(info, CyCAR, channel & 0x03); |
2953 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 2954 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2955 | } |
02f1175c | 2956 | } /* cy_start */ |
1da177e4 | 2957 | |
1da177e4 LT |
2958 | /* |
2959 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
2960 | */ | |
02f1175c | 2961 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 2962 | { |
cab9bdd1 | 2963 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2964 | |
1da177e4 | 2965 | #ifdef CY_DEBUG_OTHER |
21719191 | 2966 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
2967 | #endif |
2968 | ||
02f1175c JS |
2969 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
2970 | return; | |
1da177e4 | 2971 | |
02f1175c | 2972 | cy_flush_buffer(tty); |
d13549f8 | 2973 | cy_shutdown(info, tty); |
174e6fe0 | 2974 | tty_port_hangup(&info->port); |
02f1175c | 2975 | } /* cy_hangup */ |
1da177e4 | 2976 | |
f0737579 JS |
2977 | static int cyy_carrier_raised(struct tty_port *port) |
2978 | { | |
2979 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
2980 | port); | |
2981 | struct cyclades_card *cinfo = info->card; | |
f0737579 JS |
2982 | unsigned long flags; |
2983 | int channel = info->line - cinfo->first_line; | |
f0737579 JS |
2984 | u32 cd; |
2985 | ||
f0737579 | 2986 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2987 | cyy_writeb(info, CyCAR, channel & 0x03); |
2988 | cd = cyy_readb(info, CyMSVR1) & CyDCD; | |
f0737579 JS |
2989 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
2990 | ||
2991 | return cd; | |
2992 | } | |
2993 | ||
2994 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
2995 | { | |
2996 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
2997 | port); | |
2998 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 2999 | unsigned long flags; |
f0737579 JS |
3000 | |
3001 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
3002 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
3003 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
3004 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3005 | } | |
3006 | ||
3007 | static int cyz_carrier_raised(struct tty_port *port) | |
3008 | { | |
3009 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3010 | port); | |
f0737579 | 3011 | |
f0eefdc3 | 3012 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3013 | } |
3014 | ||
3015 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3016 | { | |
3017 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3018 | port); | |
3019 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3020 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3021 | int ret, channel = info->line - cinfo->first_line; |
3022 | u32 rs; | |
3023 | ||
f0eefdc3 | 3024 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3025 | if (raise) |
3026 | rs |= C_RS_RTS | C_RS_DTR; | |
3027 | else | |
3028 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3029 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3030 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3031 | if (ret != 0) | |
3032 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3033 | __func__, info->line, ret); | |
3034 | #ifdef CY_DEBUG_DTR | |
3035 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3036 | #endif | |
3037 | } | |
3038 | ||
3039 | static const struct tty_port_operations cyy_port_ops = { | |
3040 | .carrier_raised = cyy_carrier_raised, | |
3041 | .dtr_rts = cyy_dtr_rts, | |
e936ffd5 | 3042 | .shutdown = cy_do_close, |
f0737579 JS |
3043 | }; |
3044 | ||
3045 | static const struct tty_port_operations cyz_port_ops = { | |
3046 | .carrier_raised = cyz_carrier_raised, | |
3047 | .dtr_rts = cyz_dtr_rts, | |
e936ffd5 | 3048 | .shutdown = cy_do_close, |
f0737579 JS |
3049 | }; |
3050 | ||
1da177e4 LT |
3051 | /* |
3052 | * --------------------------------------------------------------------- | |
3053 | * cy_init() and friends | |
3054 | * | |
3055 | * cy_init() is called at boot-time to initialize the serial driver. | |
3056 | * --------------------------------------------------------------------- | |
3057 | */ | |
3058 | ||
9671f099 | 3059 | static int cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3060 | { |
3061 | struct cyclades_port *info; | |
f0eefdc3 | 3062 | unsigned int channel, port; |
0809e267 | 3063 | |
3046d50e | 3064 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3065 | cinfo->intr_enabled = 0; |
3046d50e | 3066 | |
963118ee JS |
3067 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3068 | GFP_KERNEL); | |
dd025c0c JS |
3069 | if (cinfo->ports == NULL) { |
3070 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3071 | return -ENOMEM; | |
3072 | } | |
3073 | ||
f0eefdc3 JS |
3074 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3075 | channel++, port++) { | |
3076 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3077 | tty_port_init(&info->port); |
3046d50e | 3078 | info->magic = CYCLADES_MAGIC; |
875b206b | 3079 | info->card = cinfo; |
3046d50e | 3080 | info->line = port; |
3046d50e | 3081 | |
44b7d1b3 AC |
3082 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3083 | info->port.close_delay = 5 * HZ / 10; | |
2c7fea99 | 3084 | init_completion(&info->shutdown_wait); |
3046d50e | 3085 | |
2693f485 | 3086 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3087 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3088 | struct ZFW_CTRL *zfw_ctrl; | |
3089 | ||
f0737579 | 3090 | info->port.ops = &cyz_port_ops; |
0809e267 | 3091 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3092 | |
3093 | zfw_ctrl = cinfo->base_addr + | |
3094 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3095 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3096 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3097 | ||
101b8159 | 3098 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3099 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3100 | else | |
3046d50e | 3101 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3102 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
3103 | setup_timer(&cyz_rx_full_timer[port], |
3104 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 3105 | #endif |
3046d50e | 3106 | } else { |
f0eefdc3 | 3107 | unsigned short chip_number; |
963118ee | 3108 | int index = cinfo->bus_index; |
f0eefdc3 | 3109 | |
f0737579 | 3110 | info->port.ops = &cyy_port_ops; |
0809e267 | 3111 | info->type = PORT_CIRRUS; |
0809e267 | 3112 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3113 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3114 | info->cor2 = CyETC; |
3115 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3116 | |
f0eefdc3 | 3117 | chip_number = channel / CyPORTS_PER_CHIP; |
3aeea5b9 JS |
3118 | info->u.cyy.base_addr = cinfo->base_addr + |
3119 | (cy_chip_offset[chip_number] << index); | |
3120 | info->chip_rev = cyy_readb(info, CyGFRCR); | |
15ed6cc0 AC |
3121 | |
3122 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3123 | /* It is a CD1400 rev. J or later */ |
3124 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3125 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3126 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3127 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3128 | info->rtsdtr_inv = 1; |
3129 | } else { | |
3130 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3131 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3132 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3133 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3134 | info->rtsdtr_inv = 0; |
3135 | } | |
3046d50e JS |
3136 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3137 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3138 | } |
3046d50e | 3139 | |
0809e267 | 3140 | } |
3046d50e JS |
3141 | |
3142 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3143 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3144 | mod_timer(&cyz_timerlist, jiffies + 1); |
3145 | #ifdef CY_PCI_DEBUG | |
3146 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3147 | #endif | |
3148 | } | |
3149 | #endif | |
dd025c0c | 3150 | return 0; |
0809e267 JS |
3151 | } |
3152 | ||
1da177e4 LT |
3153 | /* initialize chips on Cyclom-Y card -- return number of valid |
3154 | chips (which is number of ports/4) */ | |
9671f099 | 3155 | static unsigned short cyy_init_card(void __iomem *true_base_addr, |
31b4f0a1 | 3156 | int index) |
1da177e4 | 3157 | { |
02f1175c JS |
3158 | unsigned int chip_number; |
3159 | void __iomem *base_addr; | |
3160 | ||
3161 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3162 | /* Cy_HwReset is 0x1400 */ | |
3163 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3164 | /* Cy_ClrIntr is 0x1800 */ | |
3165 | udelay(500L); | |
3166 | ||
15ed6cc0 AC |
3167 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3168 | chip_number++) { | |
02f1175c JS |
3169 | base_addr = |
3170 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3171 | mdelay(1); | |
db05c3b1 | 3172 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3173 | /************* |
3174 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3175 | chip_number, (unsigned long)base_addr); | |
3176 | *************/ | |
3177 | return chip_number; | |
3178 | } | |
3179 | ||
3180 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3181 | udelay(10L); | |
3182 | ||
3183 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3184 | cannot distinguish between references to chip 0 and a non- | |
3185 | existent chip 4. If the preceding clearing of the supposed | |
3186 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3187 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3188 | */ | |
db05c3b1 | 3189 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3190 | (cy_chip_offset[0] << index) + |
3191 | (CyGFRCR << index)) == 0) { | |
3192 | return chip_number; | |
3193 | } | |
3194 | ||
3195 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3196 | mdelay(1); | |
3197 | ||
db05c3b1 | 3198 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3199 | /* |
3200 | printk(" chip #%d at %#6lx is not responding ", | |
3201 | chip_number, (unsigned long)base_addr); | |
3202 | printk("(GFRCR stayed 0)\n", | |
3203 | */ | |
3204 | return chip_number; | |
3205 | } | |
db05c3b1 | 3206 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3207 | 0x40) { |
3208 | /* | |
3209 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3210 | "%#2x)\n", | |
3211 | chip_number, (unsigned long)base_addr, | |
3212 | base_addr[CyGFRCR<<index]); | |
3213 | */ | |
3214 | return chip_number; | |
3215 | } | |
3216 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3217 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3218 | /* It is a CD1400 rev. J or later */ |
3219 | /* Impossible to reach 5ms with this chip. | |
3220 | Changed to 2ms instead (f = 500 Hz). */ | |
3221 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3222 | } else { | |
3223 | /* f = 200 Hz */ | |
3224 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3225 | } | |
1da177e4 | 3226 | |
02f1175c JS |
3227 | /* |
3228 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3229 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3230 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3231 | */ |
3232 | } | |
3233 | return chip_number; | |
3234 | } /* cyy_init_card */ | |
1da177e4 LT |
3235 | |
3236 | /* | |
3237 | * --------------------------------------------------------------------- | |
3238 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3239 | * sets global variables and return the number of ISA boards found. | |
3240 | * --------------------------------------------------------------------- | |
3241 | */ | |
02f1175c | 3242 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3243 | { |
3244 | #ifdef CONFIG_ISA | |
718c4ca1 | 3245 | struct cyclades_card *card; |
02f1175c JS |
3246 | unsigned short cy_isa_irq, nboard; |
3247 | void __iomem *cy_isa_address; | |
734cc178 | 3248 | unsigned short i, j, k, cy_isa_nchan; |
02f1175c | 3249 | int isparam = 0; |
1da177e4 | 3250 | |
02f1175c | 3251 | nboard = 0; |
1da177e4 | 3252 | |
1da177e4 | 3253 | /* Check for module parameters */ |
02f1175c JS |
3254 | for (i = 0; i < NR_CARDS; i++) { |
3255 | if (maddr[i] || i) { | |
3256 | isparam = 1; | |
3257 | cy_isa_addresses[i] = maddr[i]; | |
3258 | } | |
3259 | if (!maddr[i]) | |
3260 | break; | |
1da177e4 | 3261 | } |
1da177e4 | 3262 | |
02f1175c JS |
3263 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3264 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3265 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3266 | if (isa_address == 0x0000) |
096dcfce | 3267 | return nboard; |
1da177e4 | 3268 | |
02f1175c | 3269 | /* probe for CD1400... */ |
cd989b3a | 3270 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3271 | if (cy_isa_address == NULL) { |
3272 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3273 | "address\n"); | |
3274 | continue; | |
3275 | } | |
02f1175c JS |
3276 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3277 | cyy_init_card(cy_isa_address, 0); | |
3278 | if (cy_isa_nchan == 0) { | |
3137553d | 3279 | iounmap(cy_isa_address); |
02f1175c JS |
3280 | continue; |
3281 | } | |
20904363 | 3282 | |
196b3167 | 3283 | if (isparam && i < NR_CARDS && irq[i]) |
02f1175c | 3284 | cy_isa_irq = irq[i]; |
1da177e4 | 3285 | else |
02f1175c JS |
3286 | /* find out the board's irq by probing */ |
3287 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3288 | if (cy_isa_irq == 0) { | |
21719191 JS |
3289 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3290 | "IRQ could not be detected.\n", | |
02f1175c | 3291 | (unsigned long)cy_isa_address); |
3137553d | 3292 | iounmap(cy_isa_address); |
02f1175c JS |
3293 | continue; |
3294 | } | |
3295 | ||
3296 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3297 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3298 | "more channels are available. Change NR_PORTS " | |
3299 | "in cyclades.c and recompile kernel.\n", | |
02f1175c | 3300 | (unsigned long)cy_isa_address); |
3137553d | 3301 | iounmap(cy_isa_address); |
096dcfce | 3302 | return nboard; |
02f1175c JS |
3303 | } |
3304 | /* fill the next cy_card structure available */ | |
3305 | for (j = 0; j < NR_CARDS; j++) { | |
718c4ca1 JS |
3306 | card = &cy_card[j]; |
3307 | if (card->base_addr == NULL) | |
02f1175c JS |
3308 | break; |
3309 | } | |
3310 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3311 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3312 | "more cards can be used. Change NR_CARDS in " | |
3313 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3314 | (unsigned long)cy_isa_address); |
3137553d | 3315 | iounmap(cy_isa_address); |
096dcfce | 3316 | return nboard; |
02f1175c JS |
3317 | } |
3318 | ||
3319 | /* allocate IRQ */ | |
3320 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
718c4ca1 | 3321 | 0, "Cyclom-Y", card)) { |
21719191 JS |
3322 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3323 | "could not allocate IRQ#%d.\n", | |
3324 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3325 | iounmap(cy_isa_address); |
096dcfce | 3326 | return nboard; |
02f1175c JS |
3327 | } |
3328 | ||
3329 | /* set cy_card */ | |
718c4ca1 JS |
3330 | card->base_addr = cy_isa_address; |
3331 | card->ctl_addr.p9050 = NULL; | |
3332 | card->irq = (int)cy_isa_irq; | |
3333 | card->bus_index = 0; | |
3334 | card->first_line = cy_next_channel; | |
3335 | card->num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; | |
3336 | card->nports = cy_isa_nchan; | |
3337 | if (cy_init_card(card)) { | |
3338 | card->base_addr = NULL; | |
3339 | free_irq(cy_isa_irq, card); | |
3137553d JS |
3340 | iounmap(cy_isa_address); |
3341 | continue; | |
3342 | } | |
02f1175c JS |
3343 | nboard++; |
3344 | ||
21719191 JS |
3345 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3346 | "%d channels starting from port %d\n", | |
02f1175c JS |
3347 | j + 1, (unsigned long)cy_isa_address, |
3348 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3349 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3350 | ||
734cc178 JS |
3351 | for (k = 0, j = cy_next_channel; |
3352 | j < cy_next_channel + cy_isa_nchan; j++, k++) | |
3353 | tty_port_register_device(&card->ports[k].port, | |
3354 | cy_serial_driver, j, NULL); | |
02f1175c JS |
3355 | cy_next_channel += cy_isa_nchan; |
3356 | } | |
096dcfce | 3357 | return nboard; |
1da177e4 | 3358 | #else |
096dcfce | 3359 | return 0; |
02f1175c JS |
3360 | #endif /* CONFIG_ISA */ |
3361 | } /* cy_detect_isa */ | |
1da177e4 | 3362 | |
58936d8d | 3363 | #ifdef CONFIG_PCI |
9671f099 | 3364 | static inline int cyc_isfwstr(const char *str, unsigned int size) |
054f5b0a JS |
3365 | { |
3366 | unsigned int a; | |
3367 | ||
3368 | for (a = 0; a < size && *str; a++, str++) | |
3369 | if (*str & 0x80) | |
3370 | return -EINVAL; | |
3371 | ||
3372 | for (; a < size; a++, str++) | |
3373 | if (*str) | |
3374 | return -EINVAL; | |
3375 | ||
3376 | return 0; | |
3377 | } | |
3378 | ||
9671f099 | 3379 | static inline void cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3380 | unsigned int size) |
3381 | { | |
3382 | for (; size > 0; size--) { | |
3383 | cy_writel(fpga, *data++); | |
3384 | udelay(10); | |
3385 | } | |
3386 | } | |
3387 | ||
9671f099 | 3388 | static void plx_init(struct pci_dev *pdev, int irq, |
054f5b0a | 3389 | struct RUNTIME_9060 __iomem *addr) |
1da177e4 | 3390 | { |
02f1175c | 3391 | /* Reset PLX */ |
054f5b0a | 3392 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3393 | udelay(100L); |
054f5b0a | 3394 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3395 | |
3396 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3397 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3398 | udelay(100L); |
054f5b0a JS |
3399 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3400 | ||
3401 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3402 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3403 | * registers. This will remain here until we find a permanent fix. | |
3404 | */ | |
3405 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3406 | } | |
3407 | ||
9671f099 | 3408 | static int __cyz_load_fw(const struct firmware *fw, |
054f5b0a JS |
3409 | const char *name, const u32 mailbox, void __iomem *base, |
3410 | void __iomem *fpga) | |
3411 | { | |
f61e761e DW |
3412 | const void *ptr = fw->data; |
3413 | const struct zfile_header *h = ptr; | |
3414 | const struct zfile_config *c, *cs; | |
3415 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3416 | unsigned int a, tmp, len = fw->size; |
3417 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3418 | if (len < sizeof(*h)) { | |
3419 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3420 | return -EINVAL; | |
3421 | } | |
3422 | ||
3423 | cs = ptr + h->config_offset; | |
3424 | bs = ptr + h->block_offset; | |
3425 | ||
3426 | if ((void *)(cs + h->n_config) > ptr + len || | |
3427 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3428 | printk(BAD_FW "too short"); | |
3429 | return -EINVAL; | |
3430 | } | |
3431 | ||
3432 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3433 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3434 | printk(BAD_FW "bad formatted header string\n"); | |
3435 | return -EINVAL; | |
3436 | } | |
3437 | ||
3438 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3439 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3440 | return -EINVAL; | |
3441 | } | |
3442 | ||
3443 | tmp = 0; | |
3444 | for (c = cs; c < cs + h->n_config; c++) { | |
3445 | for (a = 0; a < c->n_blocks; a++) | |
3446 | if (c->block_list[a] > h->n_blocks) { | |
3447 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3448 | return -EINVAL; | |
3449 | } | |
3450 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3451 | tmp++; | |
3452 | } | |
3453 | if (!tmp) { | |
3454 | printk(BAD_FW "nothing appropriate\n"); | |
3455 | return -EINVAL; | |
3456 | } | |
3457 | ||
3458 | for (b = bs; b < bs + h->n_blocks; b++) | |
3459 | if (b->file_offset + b->size > len) { | |
3460 | printk(BAD_FW "bad block data offset\n"); | |
3461 | return -EINVAL; | |
3462 | } | |
3463 | ||
3464 | /* everything is OK, let's seek'n'load it */ | |
3465 | for (c = cs; c < cs + h->n_config; c++) | |
3466 | if (c->mailbox == mailbox && c->function == 0) | |
3467 | break; | |
3468 | ||
3469 | for (a = 0; a < c->n_blocks; a++) { | |
3470 | b = &bs[c->block_list[a]]; | |
3471 | if (b->type == ZBLOCK_FPGA) { | |
3472 | if (fpga != NULL) | |
3473 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3474 | b->size); | |
3475 | } else { | |
3476 | if (base != NULL) | |
3477 | memcpy_toio(base + b->ram_offset, | |
3478 | ptr + b->file_offset, b->size); | |
3479 | } | |
3480 | } | |
3481 | #undef BAD_FW | |
3482 | return 0; | |
3483 | } | |
3484 | ||
9671f099 | 3485 | static int cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, |
054f5b0a JS |
3486 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) |
3487 | { | |
3488 | const struct firmware *fw; | |
3489 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3490 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3491 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3492 | void __iomem *tmp; |
963118ee | 3493 | u32 mailbox, status, nchan; |
054f5b0a JS |
3494 | unsigned int i; |
3495 | int retval; | |
3496 | ||
3497 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3498 | if (retval) { | |
3499 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3500 | goto err; | |
3501 | } | |
3502 | ||
3503 | /* Check whether the firmware is already loaded and running. If | |
3504 | positive, skip this board */ | |
2693f485 | 3505 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3506 | u32 cntval = readl(base_addr + 0x190); |
3507 | ||
3508 | udelay(100); | |
3509 | if (cntval != readl(base_addr + 0x190)) { | |
3510 | /* FW counter is working, FW is running */ | |
3511 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3512 | "Skipping board.\n"); | |
3513 | retval = 0; | |
3514 | goto err_rel; | |
3515 | } | |
3516 | } | |
3517 | ||
3518 | /* start boot */ | |
3519 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3520 | ~0x00030800UL); | |
3521 | ||
3522 | mailbox = readl(&ctl_addr->mail_box_0); | |
3523 | ||
2693f485 | 3524 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3525 | /* stops CPU and set window to beginning of RAM */ |
3526 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3527 | cy_writel(&cust->cpu_stop, 0); | |
3528 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3529 | udelay(100); | |
3530 | } | |
3531 | ||
3532 | plx_init(pdev, irq, ctl_addr); | |
3533 | ||
3534 | if (mailbox != 0) { | |
3535 | /* load FPGA */ | |
3536 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3537 | base_addr); | |
3538 | if (retval) | |
3539 | goto err_rel; | |
2693f485 | 3540 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3541 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3542 | "not loaded\n"); | |
3543 | goto err_rel; | |
3544 | } | |
3545 | } | |
3546 | ||
3547 | /* stops CPU and set window to beginning of RAM */ | |
3548 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3549 | cy_writel(&cust->cpu_stop, 0); | |
3550 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3551 | udelay(100); | |
3552 | ||
3553 | /* clear memory */ | |
c4923b4f | 3554 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3555 | cy_writeb(tmp, 255); |
3556 | if (mailbox != 0) { | |
3557 | /* set window to last 512K of RAM */ | |
3558 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3559 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3560 | cy_writeb(tmp, 255); |
3561 | /* set window to beginning of RAM */ | |
3562 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3563 | } |
3564 | ||
3565 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3566 | release_firmware(fw); | |
3567 | if (retval) | |
3568 | goto err; | |
3569 | ||
3570 | /* finish boot and start boards */ | |
3571 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3572 | cy_writel(&cust->cpu_start, 0); | |
3573 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3574 | i = 0; | |
3575 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3576 | msleep(100); | |
3577 | if (status != ZFIRM_ID) { | |
3578 | if (status == ZFIRM_HLT) { | |
3579 | dev_err(&pdev->dev, "you need an external power supply " | |
3580 | "for this number of ports. Firmware halted and " | |
3581 | "board reset.\n"); | |
3582 | retval = -EIO; | |
3583 | goto err; | |
3584 | } | |
3585 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3586 | "some more time\n", status); | |
3587 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3588 | i++ < 200) | |
3589 | msleep(100); | |
3590 | if (status != ZFIRM_ID) { | |
3591 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3592 | "Giving up. (fid->signature = 0x%x)\n", | |
3593 | status); | |
3594 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3595 | "upgrading the FW, please power cycle the " | |
3596 | "system before loading the new FW to the " | |
3597 | "Cyclades-Z.\n"); | |
3598 | ||
2693f485 | 3599 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3600 | plx_init(pdev, irq, ctl_addr); |
3601 | ||
3602 | retval = -EIO; | |
3603 | goto err; | |
3604 | } | |
3605 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3606 | i / 10); | |
3607 | } | |
3608 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3609 | ||
3610 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3611 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3612 | base_addr + readl(&fid->zfwctrl_addr)); | |
3613 | ||
963118ee | 3614 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3615 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3616 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3617 | |
963118ee | 3618 | if (nchan == 0) { |
054f5b0a JS |
3619 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3620 | "check the connection between the Z host card and the " | |
3621 | "serial expanders.\n"); | |
3622 | ||
2693f485 | 3623 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3624 | plx_init(pdev, irq, ctl_addr); |
3625 | ||
3626 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3627 | "reset.\n"); | |
3628 | retval = 0; | |
3629 | goto err; | |
3630 | } | |
3631 | ||
3632 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3633 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3634 | ||
3635 | /* | |
3636 | Early firmware failed to start looking for commands. | |
3637 | This enables firmware interrupts for those commands. | |
3638 | */ | |
3639 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3640 | (1 << 17)); | |
3641 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3642 | 0x00030800UL); | |
3643 | ||
963118ee | 3644 | return nchan; |
054f5b0a JS |
3645 | err_rel: |
3646 | release_firmware(fw); | |
3647 | err: | |
3648 | return retval; | |
1da177e4 LT |
3649 | } |
3650 | ||
9671f099 | 3651 | static int cy_pci_probe(struct pci_dev *pdev, |
58936d8d | 3652 | const struct pci_device_id *ent) |
1da177e4 | 3653 | { |
718c4ca1 | 3654 | struct cyclades_card *card; |
3137553d JS |
3655 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3656 | char *card_name = NULL; | |
101b8159 | 3657 | u32 uninitialized_var(mailbox); |
734cc178 | 3658 | unsigned int device_id, nchan = 0, card_no, i, j; |
3137553d JS |
3659 | unsigned char plx_ver; |
3660 | int retval, irq; | |
02f1175c | 3661 | |
58936d8d JS |
3662 | retval = pci_enable_device(pdev); |
3663 | if (retval) { | |
3664 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3665 | goto err; |
58936d8d | 3666 | } |
1da177e4 | 3667 | |
58936d8d | 3668 | /* read PCI configuration area */ |
3137553d | 3669 | irq = pdev->irq; |
58936d8d | 3670 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3671 | |
3137553d JS |
3672 | #if defined(__alpha__) |
3673 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3674 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3675 | "addresses on Alpha systems.\n"); | |
3676 | retval = -EIO; | |
3677 | goto err_dis; | |
3678 | } | |
3679 | #endif | |
3680 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3681 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3682 | "addresses\n"); | |
3683 | retval = -EIO; | |
3684 | goto err_dis; | |
3685 | } | |
3686 | ||
3687 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3688 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3689 | "it...\n"); | |
3690 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3691 | } | |
3692 | ||
3693 | retval = pci_request_regions(pdev, "cyclades"); | |
3694 | if (retval) { | |
3695 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3696 | goto err_dis; | |
3697 | } | |
3698 | ||
3699 | retval = -EIO; | |
58936d8d JS |
3700 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3701 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3702 | card_name = "Cyclom-Y"; |
1da177e4 | 3703 | |
24e6fd4c JS |
3704 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3705 | CyPCI_Yctl); | |
3137553d JS |
3706 | if (addr0 == NULL) { |
3707 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3708 | goto err_reg; | |
58936d8d | 3709 | } |
24e6fd4c JS |
3710 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3711 | CyPCI_Ywin); | |
3137553d JS |
3712 | if (addr2 == NULL) { |
3713 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3714 | goto err_unmap; | |
58936d8d | 3715 | } |
1da177e4 | 3716 | |
3137553d JS |
3717 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3718 | if (nchan == 0) { | |
21719191 JS |
3719 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3720 | "Serial-Modules\n"); | |
c847d47c | 3721 | goto err_unmap; |
58936d8d | 3722 | } |
58936d8d | 3723 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3724 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3725 | |
24e6fd4c JS |
3726 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3727 | CyPCI_Zctl); | |
3137553d JS |
3728 | if (addr0 == NULL) { |
3729 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3730 | goto err_reg; | |
3731 | } | |
58936d8d JS |
3732 | |
3733 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3734 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3735 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3736 | |
054f5b0a | 3737 | plx_init(pdev, irq, addr0); |
02f1175c | 3738 | |
101b8159 | 3739 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3740 | |
24e6fd4c JS |
3741 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3742 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3743 | if (addr2 == NULL) { |
3744 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3745 | goto err_unmap; | |
58936d8d JS |
3746 | } |
3747 | ||
3748 | if (mailbox == ZE_V1) { | |
3137553d | 3749 | card_name = "Cyclades-Ze"; |
58936d8d | 3750 | } else { |
3137553d | 3751 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3752 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3753 | if (mailbox == ZO_V1) { |
3754 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3755 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3756 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3757 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3758 | fpga_id)), (ulong)(0xff & | |
3759 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3760 | fpga_version))); | |
3761 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3762 | } else { | |
3763 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3764 | "Cyclades-Z board. FPGA not loaded\n"); | |
3765 | } | |
1da177e4 | 3766 | #endif |
3137553d JS |
3767 | /* The following clears the firmware id word. This |
3768 | ensures that the driver will not attempt to talk to | |
3769 | the board until it has been properly initialized. | |
3770 | */ | |
3771 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
3772 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 3773 | } |
ace08c3c JS |
3774 | |
3775 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 3776 | if (retval <= 0) |
ace08c3c | 3777 | goto err_unmap; |
963118ee | 3778 | nchan = retval; |
3137553d JS |
3779 | } |
3780 | ||
3781 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
3782 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3783 | "channels are available. Change NR_PORTS in " | |
3784 | "cyclades.c and recompile kernel.\n"); | |
3785 | goto err_unmap; | |
3786 | } | |
3787 | /* fill the next cy_card structure available */ | |
3788 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
718c4ca1 JS |
3789 | card = &cy_card[card_no]; |
3790 | if (card->base_addr == NULL) | |
3137553d JS |
3791 | break; |
3792 | } | |
3793 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
3794 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3795 | "more cards can be used. Change NR_CARDS in " | |
3796 | "cyclades.c and recompile kernel.\n"); | |
3797 | goto err_unmap; | |
3798 | } | |
3799 | ||
3800 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
3801 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3802 | /* allocate IRQ */ | |
3803 | retval = request_irq(irq, cyy_interrupt, | |
718c4ca1 | 3804 | IRQF_SHARED, "Cyclom-Y", card); |
3137553d JS |
3805 | if (retval) { |
3806 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
3807 | goto err_unmap; | |
58936d8d | 3808 | } |
718c4ca1 | 3809 | card->num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 3810 | } else { |
f0eefdc3 JS |
3811 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
3812 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3813 | ||
3814 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3815 | ||
718c4ca1 JS |
3816 | card->hw_ver = mailbox; |
3817 | card->num_chips = (unsigned int)-1; | |
3818 | card->board_ctrl = &zfw_ctrl->board_ctrl; | |
02f1175c | 3819 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 3820 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
3821 | if (irq != 0 && irq != 255) { |
3822 | retval = request_irq(irq, cyz_interrupt, | |
718c4ca1 | 3823 | IRQF_SHARED, "Cyclades-Z", card); |
58936d8d | 3824 | if (retval) { |
21719191 | 3825 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 3826 | goto err_unmap; |
02f1175c | 3827 | } |
58936d8d | 3828 | } |
02f1175c | 3829 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 3830 | } |
02f1175c | 3831 | |
3137553d | 3832 | /* set cy_card */ |
718c4ca1 JS |
3833 | card->base_addr = addr2; |
3834 | card->ctl_addr.p9050 = addr0; | |
3835 | card->irq = irq; | |
3836 | card->bus_index = 1; | |
3837 | card->first_line = cy_next_channel; | |
3838 | card->nports = nchan; | |
3839 | retval = cy_init_card(card); | |
3137553d JS |
3840 | if (retval) |
3841 | goto err_null; | |
58936d8d | 3842 | |
718c4ca1 | 3843 | pci_set_drvdata(pdev, card); |
58936d8d | 3844 | |
3137553d JS |
3845 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3846 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3847 | /* enable interrupts in the PCI interface */ | |
3848 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
3849 | switch (plx_ver) { | |
3850 | case PLX_9050: | |
3137553d JS |
3851 | cy_writeb(addr0 + 0x4c, 0x43); |
3852 | break; | |
3853 | ||
3854 | case PLX_9060: | |
3855 | case PLX_9080: | |
3856 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
3857 | { |
3858 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
3859 | plx_init(pdev, irq, ctl_addr); | |
3860 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
3861 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
3862 | break; |
3863 | } | |
97e87f8e | 3864 | } |
58936d8d JS |
3865 | } |
3866 | ||
3137553d JS |
3867 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
3868 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
734cc178 JS |
3869 | for (j = 0, i = cy_next_channel; i < cy_next_channel + nchan; i++, j++) |
3870 | tty_port_register_device(&card->ports[j].port, | |
3871 | cy_serial_driver, i, &pdev->dev); | |
3137553d JS |
3872 | cy_next_channel += nchan; |
3873 | ||
58936d8d | 3874 | return 0; |
3137553d | 3875 | err_null: |
718c4ca1 JS |
3876 | card->base_addr = NULL; |
3877 | free_irq(irq, card); | |
3137553d | 3878 | err_unmap: |
24e6fd4c | 3879 | iounmap(addr0); |
3137553d | 3880 | if (addr2) |
24e6fd4c | 3881 | iounmap(addr2); |
3137553d JS |
3882 | err_reg: |
3883 | pci_release_regions(pdev); | |
3884 | err_dis: | |
3885 | pci_disable_device(pdev); | |
3886 | err: | |
3887 | return retval; | |
58936d8d | 3888 | } |
58936d8d | 3889 | |
ae8d8a14 | 3890 | static void cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 3891 | { |
38d09093 | 3892 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
191c5f10 | 3893 | unsigned int i, channel; |
38d09093 | 3894 | |
85c93fa9 | 3895 | /* non-Z with old PLX */ |
2693f485 | 3896 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 3897 | PLX_9050) |
97e87f8e | 3898 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
3899 | else |
3900 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3901 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 3902 | #endif |
97e87f8e JS |
3903 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
3904 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
3905 | ~0x0900); | |
85c93fa9 | 3906 | |
24e6fd4c | 3907 | iounmap(cinfo->base_addr); |
97e87f8e JS |
3908 | if (cinfo->ctl_addr.p9050) |
3909 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
3910 | if (cinfo->irq |
3911 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3912 | && !cy_is_Z(cinfo) |
38d09093 JS |
3913 | #endif /* CONFIG_CYZ_INTR */ |
3914 | ) | |
3915 | free_irq(cinfo->irq, cinfo); | |
3916 | pci_release_regions(pdev); | |
3917 | ||
3918 | cinfo->base_addr = NULL; | |
191c5f10 JS |
3919 | for (channel = 0, i = cinfo->first_line; i < cinfo->first_line + |
3920 | cinfo->nports; i++, channel++) { | |
6ad1ccc1 | 3921 | tty_unregister_device(cy_serial_driver, i); |
191c5f10 JS |
3922 | tty_port_destroy(&cinfo->ports[channel].port); |
3923 | } | |
dd025c0c JS |
3924 | cinfo->nports = 0; |
3925 | kfree(cinfo->ports); | |
38d09093 JS |
3926 | } |
3927 | ||
6747cd93 JS |
3928 | static struct pci_driver cy_pci_driver = { |
3929 | .name = "cyclades", | |
3930 | .id_table = cy_pci_dev_id, | |
3931 | .probe = cy_pci_probe, | |
91116cba | 3932 | .remove = cy_pci_remove |
6747cd93 JS |
3933 | }; |
3934 | #endif | |
3935 | ||
444697d6 | 3936 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 3937 | { |
02f1175c | 3938 | struct cyclades_port *info; |
dd025c0c | 3939 | unsigned int i, j; |
02f1175c JS |
3940 | __u32 cur_jifs = jiffies; |
3941 | ||
444697d6 | 3942 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
3943 | "IdleIn Overruns Ldisc\n"); |
3944 | ||
02f1175c | 3945 | /* Output one line for each known port */ |
dd025c0c JS |
3946 | for (i = 0; i < NR_CARDS; i++) |
3947 | for (j = 0; j < cy_card[i].nports; j++) { | |
3948 | info = &cy_card[i].ports[j]; | |
3949 | ||
d13549f8 JS |
3950 | if (info->port.count) { |
3951 | /* XXX is the ldisc num worth this? */ | |
3952 | struct tty_struct *tty; | |
3953 | struct tty_ldisc *ld; | |
3954 | int num = 0; | |
3955 | tty = tty_port_tty_get(&info->port); | |
3956 | if (tty) { | |
3957 | ld = tty_ldisc_ref(tty); | |
3958 | if (ld) { | |
3959 | num = ld->ops->num; | |
3960 | tty_ldisc_deref(ld); | |
3961 | } | |
3962 | tty_kref_put(tty); | |
3963 | } | |
444697d6 | 3964 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 3965 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
3966 | (cur_jifs - info->idle_stats.in_use) / |
3967 | HZ, info->idle_stats.xmit_bytes, | |
3968 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
3969 | HZ, info->idle_stats.recv_bytes, | |
3970 | (cur_jifs - info->idle_stats.recv_idle)/ | |
3971 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
3972 | num); |
3973 | } else | |
444697d6 | 3974 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
3975 | "%10lu %8lu %9lu %6ld\n", |
3976 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 3977 | } |
444697d6 AD |
3978 | return 0; |
3979 | } | |
3980 | ||
3981 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
3982 | { | |
3983 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
3984 | } |
3985 | ||
444697d6 AD |
3986 | static const struct file_operations cyclades_proc_fops = { |
3987 | .owner = THIS_MODULE, | |
3988 | .open = cyclades_proc_open, | |
3989 | .read = seq_read, | |
3990 | .llseek = seq_lseek, | |
3991 | .release = single_release, | |
3992 | }; | |
3993 | ||
1da177e4 LT |
3994 | /* The serial driver boot-time initialization code! |
3995 | Hardware I/O ports are mapped to character special devices on a | |
3996 | first found, first allocated manner. That is, this code searches | |
3997 | for Cyclom cards in the system. As each is found, it is probed | |
3998 | to discover how many chips (and thus how many ports) are present. | |
3999 | These ports are mapped to the tty ports 32 and upward in monotonic | |
4000 | fashion. If an 8-port card is replaced with a 16-port card, the | |
4001 | port mapping on a following card will shift. | |
4002 | ||
4003 | This approach is different from what is used in the other serial | |
4004 | device driver because the Cyclom is more properly a multiplexer, | |
4005 | not just an aggregation of serial ports on one card. | |
4006 | ||
4007 | If there are more cards with more ports than have been | |
4008 | statically allocated above, a warning is printed and the | |
4009 | extra ports are ignored. | |
4010 | */ | |
4011 | ||
b68e31d0 | 4012 | static const struct tty_operations cy_ops = { |
02f1175c JS |
4013 | .open = cy_open, |
4014 | .close = cy_close, | |
4015 | .write = cy_write, | |
4016 | .put_char = cy_put_char, | |
4017 | .flush_chars = cy_flush_chars, | |
4018 | .write_room = cy_write_room, | |
4019 | .chars_in_buffer = cy_chars_in_buffer, | |
4020 | .flush_buffer = cy_flush_buffer, | |
4021 | .ioctl = cy_ioctl, | |
4022 | .throttle = cy_throttle, | |
4023 | .unthrottle = cy_unthrottle, | |
4024 | .set_termios = cy_set_termios, | |
4025 | .stop = cy_stop, | |
4026 | .start = cy_start, | |
4027 | .hangup = cy_hangup, | |
4028 | .break_ctl = cy_break, | |
4029 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4030 | .tiocmget = cy_tiocmget, |
4031 | .tiocmset = cy_tiocmset, | |
0587102c | 4032 | .get_icount = cy_get_icount, |
444697d6 | 4033 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
4034 | }; |
4035 | ||
02f1175c | 4036 | static int __init cy_init(void) |
1da177e4 | 4037 | { |
dd025c0c | 4038 | unsigned int nboards; |
9dacf3b2 | 4039 | int retval = -ENOMEM; |
02f1175c JS |
4040 | |
4041 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4042 | if (!cy_serial_driver) | |
9dacf3b2 | 4043 | goto err; |
21719191 | 4044 | |
64a14b51 | 4045 | printk(KERN_INFO "Cyclades driver " CY_VERSION "\n"); |
02f1175c JS |
4046 | |
4047 | /* Initialize the tty_driver structure */ | |
4048 | ||
02f1175c JS |
4049 | cy_serial_driver->driver_name = "cyclades"; |
4050 | cy_serial_driver->name = "ttyC"; | |
4051 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4052 | cy_serial_driver->minor_start = 0; | |
4053 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4054 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4055 | cy_serial_driver->init_termios = tty_std_termios; | |
4056 | cy_serial_driver->init_termios.c_cflag = | |
4057 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4058 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4059 | tty_set_operations(cy_serial_driver, &cy_ops); |
4060 | ||
9dacf3b2 JS |
4061 | retval = tty_register_driver(cy_serial_driver); |
4062 | if (retval) { | |
4063 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4064 | goto err_frtty; | |
4065 | } | |
02f1175c | 4066 | |
02f1175c JS |
4067 | /* the code below is responsible to find the boards. Each different |
4068 | type of board has its own detection routine. If a board is found, | |
4069 | the next cy_card structure available is set by the detection | |
4070 | routine. These functions are responsible for checking the | |
4071 | availability of cy_card and cy_port data structures and updating | |
4072 | the cy_next_channel. */ | |
4073 | ||
4074 | /* look for isa boards */ | |
14a55a67 | 4075 | nboards = cy_detect_isa(); |
02f1175c | 4076 | |
6747cd93 | 4077 | #ifdef CONFIG_PCI |
02f1175c | 4078 | /* look for pci boards */ |
6747cd93 | 4079 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4080 | if (retval && !nboards) { |
4081 | tty_unregister_driver(cy_serial_driver); | |
4082 | goto err_frtty; | |
4083 | } | |
6747cd93 | 4084 | #endif |
9dacf3b2 JS |
4085 | |
4086 | return 0; | |
9dacf3b2 JS |
4087 | err_frtty: |
4088 | put_tty_driver(cy_serial_driver); | |
4089 | err: | |
4090 | return retval; | |
02f1175c | 4091 | } /* cy_init */ |
1da177e4 | 4092 | |
02f1175c | 4093 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4094 | { |
dd025c0c | 4095 | struct cyclades_card *card; |
65f76a82 | 4096 | unsigned int i, e1; |
1da177e4 LT |
4097 | |
4098 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4099 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4100 | #endif /* CONFIG_CYZ_INTR */ |
4101 | ||
15ed6cc0 AC |
4102 | e1 = tty_unregister_driver(cy_serial_driver); |
4103 | if (e1) | |
21719191 JS |
4104 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4105 | "driver(%d)\n", e1); | |
1da177e4 | 4106 | |
6747cd93 JS |
4107 | #ifdef CONFIG_PCI |
4108 | pci_unregister_driver(&cy_pci_driver); | |
4109 | #endif | |
4110 | ||
02f1175c | 4111 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4112 | card = &cy_card[i]; |
4113 | if (card->base_addr) { | |
85c93fa9 | 4114 | /* clear interrupt */ |
dd025c0c JS |
4115 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4116 | iounmap(card->base_addr); | |
97e87f8e JS |
4117 | if (card->ctl_addr.p9050) |
4118 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4119 | if (card->irq |
1da177e4 | 4120 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4121 | && !cy_is_Z(card) |
1da177e4 | 4122 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4123 | ) |
dd025c0c | 4124 | free_irq(card->irq, card); |
65f76a82 | 4125 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4126 | card->nports; e1++) |
6ad1ccc1 | 4127 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4128 | kfree(card->ports); |
02f1175c JS |
4129 | } |
4130 | } | |
f2462bfe JS |
4131 | |
4132 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4133 | } /* cy_cleanup_module */ |
4134 | ||
4135 | module_init(cy_init); | |
4136 | module_exit(cy_cleanup_module); | |
4137 | ||
4138 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4139 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4140 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |
e6c4ef98 | 4141 | MODULE_FIRMWARE("cyzfirm.bin"); |