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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 LT |
95 | |
96 | #define STD_COM_FLAGS (0) | |
97 | ||
054f5b0a JS |
98 | /* firmware stuff */ |
99 | #define ZL_MAX_BLOCKS 16 | |
100 | #define DRIVER_VERSION 0x02010203 | |
101 | #define RAM_SIZE 0x80000 | |
102 | ||
054f5b0a JS |
103 | enum zblock_type { |
104 | ZBLOCK_PRG = 0, | |
105 | ZBLOCK_FPGA = 1 | |
106 | }; | |
107 | ||
108 | struct zfile_header { | |
109 | char name[64]; | |
110 | char date[32]; | |
111 | char aux[32]; | |
112 | u32 n_config; | |
113 | u32 config_offset; | |
114 | u32 n_blocks; | |
115 | u32 block_offset; | |
116 | u32 reserved[9]; | |
117 | } __attribute__ ((packed)); | |
118 | ||
119 | struct zfile_config { | |
120 | char name[64]; | |
121 | u32 mailbox; | |
122 | u32 function; | |
123 | u32 n_blocks; | |
124 | u32 block_list[ZL_MAX_BLOCKS]; | |
125 | } __attribute__ ((packed)); | |
126 | ||
127 | struct zfile_block { | |
128 | u32 type; | |
129 | u32 file_offset; | |
130 | u32 ram_offset; | |
131 | u32 size; | |
132 | } __attribute__ ((packed)); | |
133 | ||
1da177e4 LT |
134 | static struct tty_driver *cy_serial_driver; |
135 | ||
136 | #ifdef CONFIG_ISA | |
137 | /* This is the address lookup table. The driver will probe for | |
138 | Cyclom-Y/ISA boards at all addresses in here. If you want the | |
139 | driver to probe addresses at a different address, add it to | |
140 | this table. If the driver is probing some other board and | |
141 | causing problems, remove the offending address from this table. | |
1da177e4 LT |
142 | */ |
143 | ||
144 | static unsigned int cy_isa_addresses[] = { | |
02f1175c JS |
145 | 0xD0000, |
146 | 0xD2000, | |
147 | 0xD4000, | |
148 | 0xD6000, | |
149 | 0xD8000, | |
150 | 0xDA000, | |
151 | 0xDC000, | |
152 | 0xDE000, | |
153 | 0, 0, 0, 0, 0, 0, 0, 0 | |
1da177e4 | 154 | }; |
02f1175c | 155 | |
fe971071 | 156 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
1da177e4 | 157 | |
3046d50e JS |
158 | static long maddr[NR_CARDS]; |
159 | static int irq[NR_CARDS]; | |
1da177e4 LT |
160 | |
161 | module_param_array(maddr, long, NULL, 0); | |
162 | module_param_array(irq, int, NULL, 0); | |
1da177e4 | 163 | |
02f1175c | 164 | #endif /* CONFIG_ISA */ |
1da177e4 LT |
165 | |
166 | /* This is the per-card data structure containing address, irq, number of | |
167 | channels, etc. This driver supports a maximum of NR_CARDS cards. | |
168 | */ | |
169 | static struct cyclades_card cy_card[NR_CARDS]; | |
170 | ||
02f1175c | 171 | static int cy_next_channel; /* next minor available */ |
1da177e4 | 172 | |
1da177e4 LT |
173 | /* |
174 | * This is used to look up the divisor speeds and the timeouts | |
175 | * We're normally limited to 15 distinct baud rates. The extra | |
77451e53 | 176 | * are accessed via settings in info->port.flags. |
1da177e4 LT |
177 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
178 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, | |
179 | * HI VHI | |
180 | * 20 | |
181 | */ | |
ebdb5135 | 182 | static const int baud_table[] = { |
02f1175c JS |
183 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
184 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, | |
185 | 230400, 0 | |
186 | }; | |
187 | ||
ebdb5135 | 188 | static const char baud_co_25[] = { /* 25 MHz clock option table */ |
02f1175c JS |
189 | /* value => 00 01 02 03 04 */ |
190 | /* divide by 8 32 128 512 2048 */ | |
191 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, | |
192 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |
193 | }; | |
194 | ||
ebdb5135 | 195 | static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
02f1175c JS |
196 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
197 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 | |
198 | }; | |
199 | ||
ebdb5135 | 200 | static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
02f1175c JS |
201 | /* value => 00 01 02 03 04 */ |
202 | /* divide by 8 32 128 512 2048 */ | |
203 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, | |
204 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, | |
205 | 0x00 | |
206 | }; | |
207 | ||
ebdb5135 | 208 | static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
02f1175c JS |
209 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
210 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, | |
211 | 0x21 | |
212 | }; | |
213 | ||
ebdb5135 | 214 | static const char baud_cor3[] = { /* receive threshold */ |
02f1175c JS |
215 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
216 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, | |
217 | 0x07 | |
218 | }; | |
1da177e4 LT |
219 | |
220 | /* | |
221 | * The Cyclades driver implements HW flow control as any serial driver. | |
15ed6cc0 AC |
222 | * The cyclades_port structure member rflow and the vector rflow_thr |
223 | * allows us to take advantage of a special feature in the CD1400 to avoid | |
224 | * data loss even when the system interrupt latency is too high. These flags | |
225 | * are to be used only with very special applications. Setting these flags | |
226 | * requires the use of a special cable (DTR and RTS reversed). In the new | |
227 | * CD1400-based boards (rev. 6.00 or later), there is no need for special | |
1da177e4 LT |
228 | * cables. |
229 | */ | |
230 | ||
ebdb5135 | 231 | static const char rflow_thr[] = { /* rflow threshold */ |
02f1175c JS |
232 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
233 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, | |
234 | 0x0a | |
235 | }; | |
1da177e4 LT |
236 | |
237 | /* The Cyclom-Ye has placed the sequential chips in non-sequential | |
238 | * address order. This look-up table overcomes that problem. | |
239 | */ | |
f0eefdc3 | 240 | static const unsigned int cy_chip_offset[] = { 0x0000, |
02f1175c JS |
241 | 0x0400, |
242 | 0x0800, | |
243 | 0x0C00, | |
244 | 0x0200, | |
245 | 0x0600, | |
246 | 0x0A00, | |
247 | 0x0E00 | |
248 | }; | |
1da177e4 LT |
249 | |
250 | /* PCI related definitions */ | |
251 | ||
1da177e4 | 252 | #ifdef CONFIG_PCI |
ebdb5135 | 253 | static const struct pci_device_id cy_pci_dev_id[] = { |
15ed6cc0 AC |
254 | /* PCI < 1Mb */ |
255 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, | |
256 | /* PCI > 1Mb */ | |
257 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, | |
258 | /* 4Y PCI < 1Mb */ | |
259 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, | |
260 | /* 4Y PCI > 1Mb */ | |
261 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, | |
262 | /* 8Y PCI < 1Mb */ | |
263 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, | |
264 | /* 8Y PCI > 1Mb */ | |
265 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, | |
266 | /* Z PCI < 1Mb */ | |
267 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, | |
268 | /* Z PCI > 1Mb */ | |
269 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, | |
893de2df | 270 | { } /* end of table */ |
02f1175c | 271 | }; |
893de2df | 272 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
1da177e4 LT |
273 | #endif |
274 | ||
275 | static void cy_start(struct tty_struct *); | |
d13549f8 | 276 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
1a86b5e3 | 277 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
1da177e4 LT |
278 | #ifdef CONFIG_ISA |
279 | static unsigned detect_isa_irq(void __iomem *); | |
02f1175c | 280 | #endif /* CONFIG_ISA */ |
1da177e4 | 281 | |
1da177e4 LT |
282 | #ifndef CONFIG_CYZ_INTR |
283 | static void cyz_poll(unsigned long); | |
284 | ||
285 | /* The Cyclades-Z polling cycle is defined by this variable */ | |
286 | static long cyz_polling_cycle = CZ_DEF_POLL; | |
287 | ||
8d06afab | 288 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
1da177e4 | 289 | |
02f1175c | 290 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
291 | static void cyz_rx_restart(unsigned long); |
292 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; | |
02f1175c | 293 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 | 294 | |
f25d596f | 295 | static void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val) |
3aeea5b9 JS |
296 | { |
297 | struct cyclades_card *card = port->card; | |
298 | ||
299 | cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val); | |
300 | } | |
301 | ||
f88d8683 | 302 | static u8 cyy_readb(struct cyclades_port *port, u32 reg) |
3aeea5b9 JS |
303 | { |
304 | struct cyclades_card *card = port->card; | |
305 | ||
306 | return readb(port->u.cyy.base_addr + (reg << card->bus_index)); | |
307 | } | |
308 | ||
2693f485 JS |
309 | static inline bool cy_is_Z(struct cyclades_card *card) |
310 | { | |
311 | return card->num_chips == (unsigned int)-1; | |
312 | } | |
313 | ||
314 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) | |
315 | { | |
316 | return readl(&ctl_addr->init_ctrl) & (1 << 17); | |
317 | } | |
318 | ||
319 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) | |
320 | { | |
321 | return __cyz_fpga_loaded(card->ctl_addr.p9060); | |
322 | } | |
323 | ||
1c82363e | 324 | static bool cyz_is_loaded(struct cyclades_card *card) |
2693f485 JS |
325 | { |
326 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; | |
327 | ||
328 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && | |
329 | readl(&fw_id->signature) == ZFIRM_ID; | |
330 | } | |
331 | ||
8c6ba003 | 332 | static int serial_paranoia_check(struct cyclades_port *info, |
ebdb5135 | 333 | const char *name, const char *routine) |
1da177e4 LT |
334 | { |
335 | #ifdef SERIAL_PARANOIA_CHECK | |
02f1175c | 336 | if (!info) { |
21719191 JS |
337 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
338 | "in %s\n", name, routine); | |
02f1175c JS |
339 | return 1; |
340 | } | |
341 | ||
02f1175c | 342 | if (info->magic != CYCLADES_MAGIC) { |
21719191 JS |
343 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
344 | "struct (%s) in %s\n", name, routine); | |
02f1175c JS |
345 | return 1; |
346 | } | |
1da177e4 | 347 | #endif |
02f1175c | 348 | return 0; |
ebdb5135 | 349 | } |
1da177e4 | 350 | |
1da177e4 LT |
351 | /***********************************************************/ |
352 | /********* Start of block of Cyclom-Y specific code ********/ | |
353 | ||
354 | /* This routine waits up to 1000 micro-seconds for the previous | |
355 | command to the Cirrus chip to complete and then issues the | |
356 | new command. An error is returned if the previous command | |
357 | didn't finish within the time limit. | |
358 | ||
359 | This function is only called from inside spinlock-protected code. | |
360 | */ | |
3aeea5b9 | 361 | static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index) |
1da177e4 | 362 | { |
3aeea5b9 | 363 | void __iomem *ccr = base_addr + (CyCCR << index); |
ad39c300 | 364 | unsigned int i; |
1da177e4 | 365 | |
02f1175c JS |
366 | /* Check to see that the previous command has completed */ |
367 | for (i = 0; i < 100; i++) { | |
3aeea5b9 | 368 | if (readb(ccr) == 0) |
02f1175c | 369 | break; |
02f1175c | 370 | udelay(10L); |
1da177e4 | 371 | } |
02f1175c JS |
372 | /* if the CCR never cleared, the previous command |
373 | didn't finish within the "reasonable time" */ | |
374 | if (i == 100) | |
096dcfce | 375 | return -1; |
1da177e4 | 376 | |
02f1175c | 377 | /* Issue the new command */ |
3aeea5b9 | 378 | cy_writeb(ccr, cmd); |
1da177e4 | 379 | |
096dcfce | 380 | return 0; |
3aeea5b9 JS |
381 | } |
382 | ||
383 | static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd) | |
384 | { | |
385 | return __cyy_issue_cmd(port->u.cyy.base_addr, cmd, | |
386 | port->card->bus_index); | |
387 | } | |
1da177e4 LT |
388 | |
389 | #ifdef CONFIG_ISA | |
390 | /* ISA interrupt detection code */ | |
15ed6cc0 | 391 | static unsigned detect_isa_irq(void __iomem *address) |
1da177e4 | 392 | { |
02f1175c JS |
393 | int irq; |
394 | unsigned long irqs, flags; | |
395 | int save_xir, save_car; | |
396 | int index = 0; /* IRQ probing is only for ISA */ | |
397 | ||
398 | /* forget possible initially masked and pending IRQ */ | |
399 | irq = probe_irq_off(probe_irq_on()); | |
400 | ||
401 | /* Clear interrupts on the board first */ | |
402 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
403 | /* Cy_ClrIntr is 0x1800 */ | |
404 | ||
405 | irqs = probe_irq_on(); | |
406 | /* Wait ... */ | |
f6e208c1 | 407 | msleep(5); |
02f1175c JS |
408 | |
409 | /* Enable the Tx interrupts on the CD1400 */ | |
410 | local_irq_save(flags); | |
411 | cy_writeb(address + (CyCAR << index), 0); | |
3aeea5b9 | 412 | __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
02f1175c JS |
413 | |
414 | cy_writeb(address + (CyCAR << index), 0); | |
415 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 416 | readb(address + (CySRER << index)) | CyTxRdy); |
02f1175c JS |
417 | local_irq_restore(flags); |
418 | ||
419 | /* Wait ... */ | |
f6e208c1 | 420 | msleep(5); |
02f1175c JS |
421 | |
422 | /* Check which interrupt is in use */ | |
423 | irq = probe_irq_off(irqs); | |
424 | ||
425 | /* Clean up */ | |
db05c3b1 JS |
426 | save_xir = (u_char) readb(address + (CyTIR << index)); |
427 | save_car = readb(address + (CyCAR << index)); | |
02f1175c JS |
428 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
429 | cy_writeb(address + (CySRER << index), | |
db05c3b1 | 430 | readb(address + (CySRER << index)) & ~CyTxRdy); |
02f1175c JS |
431 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
432 | cy_writeb(address + (CyCAR << index), (save_car)); | |
433 | cy_writeb(address + (Cy_ClrIntr << index), 0); | |
434 | /* Cy_ClrIntr is 0x1800 */ | |
435 | ||
436 | return (irq > 0) ? irq : 0; | |
1da177e4 | 437 | } |
02f1175c | 438 | #endif /* CONFIG_ISA */ |
1da177e4 | 439 | |
ce97a097 JS |
440 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
441 | void __iomem *base_addr) | |
e941027f JS |
442 | { |
443 | struct cyclades_port *info; | |
227434f8 | 444 | struct tty_port *port; |
65f76a82 | 445 | int len, index = cinfo->bus_index; |
3aeea5b9 | 446 | u8 ivr, save_xir, channel, save_car, data, char_count; |
e941027f | 447 | |
e941027f | 448 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 449 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
e941027f | 450 | #endif |
ce97a097 | 451 | /* determine the channel & change to that context */ |
65f76a82 JS |
452 | save_xir = readb(base_addr + (CyRIR << index)); |
453 | channel = save_xir & CyIRChannel; | |
ce97a097 | 454 | info = &cinfo->ports[channel + chip * 4]; |
227434f8 | 455 | port = &info->port; |
3aeea5b9 JS |
456 | save_car = cyy_readb(info, CyCAR); |
457 | cyy_writeb(info, CyCAR, save_xir); | |
458 | ivr = cyy_readb(info, CyRIVR) & CyIVRMask; | |
ce97a097 | 459 | |
ce97a097 | 460 | /* there is an open port for this data */ |
3aeea5b9 JS |
461 | if (ivr == CyIVRRxEx) { /* exception */ |
462 | data = cyy_readb(info, CyRDSR); | |
ce97a097 JS |
463 | |
464 | /* For statistics only */ | |
465 | if (data & CyBREAK) | |
466 | info->icount.brk++; | |
467 | else if (data & CyFRAME) | |
468 | info->icount.frame++; | |
469 | else if (data & CyPARITY) | |
470 | info->icount.parity++; | |
471 | else if (data & CyOVERRUN) | |
472 | info->icount.overrun++; | |
473 | ||
474 | if (data & info->ignore_status_mask) { | |
475 | info->icount.rx++; | |
ce97a097 JS |
476 | return; |
477 | } | |
227434f8 | 478 | if (tty_buffer_request_room(port, 1)) { |
ce97a097 JS |
479 | if (data & info->read_status_mask) { |
480 | if (data & CyBREAK) { | |
92a19f9c | 481 | tty_insert_flip_char(port, |
3aeea5b9 JS |
482 | cyy_readb(info, CyRDSR), |
483 | TTY_BREAK); | |
ce97a097 | 484 | info->icount.rx++; |
6732c8bb JS |
485 | if (port->flags & ASYNC_SAK) { |
486 | struct tty_struct *tty = | |
487 | tty_port_tty_get(port); | |
488 | if (tty) { | |
489 | do_SAK(tty); | |
490 | tty_kref_put(tty); | |
491 | } | |
492 | } | |
ce97a097 | 493 | } else if (data & CyFRAME) { |
92a19f9c | 494 | tty_insert_flip_char(port, |
3aeea5b9 JS |
495 | cyy_readb(info, CyRDSR), |
496 | TTY_FRAME); | |
ce97a097 JS |
497 | info->icount.rx++; |
498 | info->idle_stats.frame_errs++; | |
499 | } else if (data & CyPARITY) { | |
500 | /* Pieces of seven... */ | |
92a19f9c | 501 | tty_insert_flip_char(port, |
3aeea5b9 JS |
502 | cyy_readb(info, CyRDSR), |
503 | TTY_PARITY); | |
ce97a097 JS |
504 | info->icount.rx++; |
505 | info->idle_stats.parity_errs++; | |
506 | } else if (data & CyOVERRUN) { | |
92a19f9c | 507 | tty_insert_flip_char(port, 0, |
ce97a097 JS |
508 | TTY_OVERRUN); |
509 | info->icount.rx++; | |
510 | /* If the flip buffer itself is | |
511 | overflowing, we still lose | |
512 | the next incoming character. | |
513 | */ | |
92a19f9c | 514 | tty_insert_flip_char(port, |
3aeea5b9 JS |
515 | cyy_readb(info, CyRDSR), |
516 | TTY_FRAME); | |
02f1175c | 517 | info->icount.rx++; |
02f1175c | 518 | info->idle_stats.overruns++; |
ce97a097 JS |
519 | /* These two conditions may imply */ |
520 | /* a normal read should be done. */ | |
521 | /* } else if(data & CyTIMEOUT) { */ | |
522 | /* } else if(data & CySPECHAR) { */ | |
523 | } else { | |
92a19f9c | 524 | tty_insert_flip_char(port, 0, |
ce97a097 JS |
525 | TTY_NORMAL); |
526 | info->icount.rx++; | |
02f1175c | 527 | } |
ce97a097 | 528 | } else { |
92a19f9c | 529 | tty_insert_flip_char(port, 0, TTY_NORMAL); |
ce97a097 JS |
530 | info->icount.rx++; |
531 | } | |
532 | } else { | |
533 | /* there was a software buffer overrun and nothing | |
534 | * could be done about it!!! */ | |
535 | info->icount.buf_overrun++; | |
536 | info->idle_stats.overruns++; | |
537 | } | |
538 | } else { /* normal character reception */ | |
539 | /* load # chars available from the chip */ | |
3aeea5b9 | 540 | char_count = cyy_readb(info, CyRDCR); |
e941027f JS |
541 | |
542 | #ifdef CY_ENABLE_MONITORING | |
ce97a097 JS |
543 | ++info->mon.int_count; |
544 | info->mon.char_count += char_count; | |
545 | if (char_count > info->mon.char_max) | |
546 | info->mon.char_max = char_count; | |
547 | info->mon.char_last = char_count; | |
e941027f | 548 | #endif |
227434f8 | 549 | len = tty_buffer_request_room(port, char_count); |
ce97a097 | 550 | while (len--) { |
3aeea5b9 | 551 | data = cyy_readb(info, CyRDSR); |
92a19f9c | 552 | tty_insert_flip_char(port, data, TTY_NORMAL); |
ce97a097 JS |
553 | info->idle_stats.recv_bytes++; |
554 | info->icount.rx++; | |
e941027f | 555 | #ifdef CY_16Y_HACK |
ce97a097 | 556 | udelay(10L); |
e941027f | 557 | #endif |
e941027f | 558 | } |
ce97a097 | 559 | info->idle_stats.recv_idle = jiffies; |
e941027f | 560 | } |
6732c8bb JS |
561 | tty_schedule_flip(port); |
562 | ||
ce97a097 | 563 | /* end of service */ |
3aeea5b9 JS |
564 | cyy_writeb(info, CyRIR, save_xir & 0x3f); |
565 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 566 | } |
e941027f | 567 | |
65f76a82 | 568 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
ce97a097 JS |
569 | void __iomem *base_addr) |
570 | { | |
571 | struct cyclades_port *info; | |
d13549f8 | 572 | struct tty_struct *tty; |
65f76a82 JS |
573 | int char_count, index = cinfo->bus_index; |
574 | u8 save_xir, channel, save_car, outch; | |
ce97a097 JS |
575 | |
576 | /* Since we only get here when the transmit buffer | |
577 | is empty, we know we can always stuff a dozen | |
578 | characters. */ | |
e941027f | 579 | #ifdef CY_DEBUG_INTERRUPTS |
ce97a097 | 580 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
e941027f JS |
581 | #endif |
582 | ||
ce97a097 | 583 | /* determine the channel & change to that context */ |
65f76a82 JS |
584 | save_xir = readb(base_addr + (CyTIR << index)); |
585 | channel = save_xir & CyIRChannel; | |
ce97a097 JS |
586 | save_car = readb(base_addr + (CyCAR << index)); |
587 | cy_writeb(base_addr + (CyCAR << index), save_xir); | |
588 | ||
ce97a097 | 589 | info = &cinfo->ports[channel + chip * 4]; |
d13549f8 JS |
590 | tty = tty_port_tty_get(&info->port); |
591 | if (tty == NULL) { | |
3aeea5b9 | 592 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); |
ce97a097 JS |
593 | goto end; |
594 | } | |
02f1175c | 595 | |
ce97a097 JS |
596 | /* load the on-chip space for outbound data */ |
597 | char_count = info->xmit_fifo_size; | |
02f1175c | 598 | |
ce97a097 JS |
599 | if (info->x_char) { /* send special char */ |
600 | outch = info->x_char; | |
3aeea5b9 | 601 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
602 | char_count--; |
603 | info->icount.tx++; | |
604 | info->x_char = 0; | |
605 | } | |
02f1175c | 606 | |
ce97a097 JS |
607 | if (info->breakon || info->breakoff) { |
608 | if (info->breakon) { | |
3aeea5b9 JS |
609 | cyy_writeb(info, CyTDR, 0); |
610 | cyy_writeb(info, CyTDR, 0x81); | |
ce97a097 JS |
611 | info->breakon = 0; |
612 | char_count -= 2; | |
e941027f | 613 | } |
ce97a097 | 614 | if (info->breakoff) { |
3aeea5b9 JS |
615 | cyy_writeb(info, CyTDR, 0); |
616 | cyy_writeb(info, CyTDR, 0x83); | |
ce97a097 JS |
617 | info->breakoff = 0; |
618 | char_count -= 2; | |
e941027f | 619 | } |
ce97a097 | 620 | } |
02f1175c | 621 | |
ce97a097 JS |
622 | while (char_count-- > 0) { |
623 | if (!info->xmit_cnt) { | |
3aeea5b9 JS |
624 | if (cyy_readb(info, CySRER) & CyTxMpty) { |
625 | cyy_writeb(info, CySRER, | |
626 | cyy_readb(info, CySRER) & ~CyTxMpty); | |
ce97a097 | 627 | } else { |
3aeea5b9 JS |
628 | cyy_writeb(info, CySRER, CyTxMpty | |
629 | (cyy_readb(info, CySRER) & ~CyTxRdy)); | |
02f1175c | 630 | } |
ce97a097 JS |
631 | goto done; |
632 | } | |
77451e53 | 633 | if (info->port.xmit_buf == NULL) { |
3aeea5b9 JS |
634 | cyy_writeb(info, CySRER, |
635 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
636 | goto done; |
637 | } | |
d13549f8 | 638 | if (tty->stopped || tty->hw_stopped) { |
3aeea5b9 JS |
639 | cyy_writeb(info, CySRER, |
640 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
ce97a097 JS |
641 | goto done; |
642 | } | |
643 | /* Because the Embedded Transmit Commands have been enabled, | |
644 | * we must check to see if the escape character, NULL, is being | |
645 | * sent. If it is, we must ensure that there is room for it to | |
646 | * be doubled in the output stream. Therefore we no longer | |
647 | * advance the pointer when the character is fetched, but | |
648 | * rather wait until after the check for a NULL output | |
649 | * character. This is necessary because there may not be room | |
650 | * for the two chars needed to send a NULL.) | |
651 | */ | |
77451e53 | 652 | outch = info->port.xmit_buf[info->xmit_tail]; |
ce97a097 JS |
653 | if (outch) { |
654 | info->xmit_cnt--; | |
655 | info->xmit_tail = (info->xmit_tail + 1) & | |
656 | (SERIAL_XMIT_SIZE - 1); | |
3aeea5b9 | 657 | cyy_writeb(info, CyTDR, outch); |
ce97a097 JS |
658 | info->icount.tx++; |
659 | } else { | |
660 | if (char_count > 1) { | |
02f1175c JS |
661 | info->xmit_cnt--; |
662 | info->xmit_tail = (info->xmit_tail + 1) & | |
ce97a097 | 663 | (SERIAL_XMIT_SIZE - 1); |
3aeea5b9 JS |
664 | cyy_writeb(info, CyTDR, outch); |
665 | cyy_writeb(info, CyTDR, 0); | |
02f1175c | 666 | info->icount.tx++; |
ce97a097 | 667 | char_count--; |
02f1175c | 668 | } |
e941027f | 669 | } |
e941027f JS |
670 | } |
671 | ||
ce97a097 | 672 | done: |
d13549f8 JS |
673 | tty_wakeup(tty); |
674 | tty_kref_put(tty); | |
ce97a097 JS |
675 | end: |
676 | /* end of service */ | |
3aeea5b9 JS |
677 | cyy_writeb(info, CyTIR, save_xir & 0x3f); |
678 | cyy_writeb(info, CyCAR, save_car); | |
ce97a097 | 679 | } |
02f1175c | 680 | |
ce97a097 JS |
681 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
682 | void __iomem *base_addr) | |
683 | { | |
684 | struct cyclades_port *info; | |
d13549f8 | 685 | struct tty_struct *tty; |
65f76a82 JS |
686 | int index = cinfo->bus_index; |
687 | u8 save_xir, channel, save_car, mdm_change, mdm_status; | |
ce97a097 JS |
688 | |
689 | /* determine the channel & change to that context */ | |
65f76a82 JS |
690 | save_xir = readb(base_addr + (CyMIR << index)); |
691 | channel = save_xir & CyIRChannel; | |
ce97a097 | 692 | info = &cinfo->ports[channel + chip * 4]; |
3aeea5b9 JS |
693 | save_car = cyy_readb(info, CyCAR); |
694 | cyy_writeb(info, CyCAR, save_xir); | |
ce97a097 | 695 | |
3aeea5b9 JS |
696 | mdm_change = cyy_readb(info, CyMISR); |
697 | mdm_status = cyy_readb(info, CyMSVR1); | |
ce97a097 | 698 | |
d13549f8 JS |
699 | tty = tty_port_tty_get(&info->port); |
700 | if (!tty) | |
ce97a097 JS |
701 | goto end; |
702 | ||
703 | if (mdm_change & CyANY_DELTA) { | |
704 | /* For statistics only */ | |
705 | if (mdm_change & CyDCD) | |
706 | info->icount.dcd++; | |
707 | if (mdm_change & CyCTS) | |
708 | info->icount.cts++; | |
709 | if (mdm_change & CyDSR) | |
710 | info->icount.dsr++; | |
711 | if (mdm_change & CyRI) | |
712 | info->icount.rng++; | |
713 | ||
bdc04e31 | 714 | wake_up_interruptible(&info->port.delta_msr_wait); |
ce97a097 JS |
715 | } |
716 | ||
77451e53 | 717 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
174e6fe0 JS |
718 | if (mdm_status & CyDCD) |
719 | wake_up_interruptible(&info->port.open_wait); | |
720 | else | |
d13549f8 | 721 | tty_hangup(tty); |
ce97a097 | 722 | } |
f21ec3d2 | 723 | if ((mdm_change & CyCTS) && tty_port_cts_enabled(&info->port)) { |
d13549f8 | 724 | if (tty->hw_stopped) { |
ce97a097 JS |
725 | if (mdm_status & CyCTS) { |
726 | /* cy_start isn't used | |
727 | because... !!! */ | |
d13549f8 | 728 | tty->hw_stopped = 0; |
3aeea5b9 JS |
729 | cyy_writeb(info, CySRER, |
730 | cyy_readb(info, CySRER) | CyTxRdy); | |
d13549f8 | 731 | tty_wakeup(tty); |
02f1175c | 732 | } |
ce97a097 JS |
733 | } else { |
734 | if (!(mdm_status & CyCTS)) { | |
735 | /* cy_stop isn't used | |
736 | because ... !!! */ | |
d13549f8 | 737 | tty->hw_stopped = 1; |
3aeea5b9 JS |
738 | cyy_writeb(info, CySRER, |
739 | cyy_readb(info, CySRER) & ~CyTxRdy); | |
02f1175c | 740 | } |
e941027f | 741 | } |
e941027f | 742 | } |
ce97a097 JS |
743 | /* if (mdm_change & CyDSR) { |
744 | } | |
745 | if (mdm_change & CyRI) { | |
746 | }*/ | |
d13549f8 | 747 | tty_kref_put(tty); |
ce97a097 JS |
748 | end: |
749 | /* end of service */ | |
3aeea5b9 JS |
750 | cyy_writeb(info, CyMIR, save_xir & 0x3f); |
751 | cyy_writeb(info, CyCAR, save_car); | |
e941027f JS |
752 | } |
753 | ||
1da177e4 LT |
754 | /* The real interrupt service routine is called |
755 | whenever the card wants its hand held--chars | |
756 | received, out buffer empty, modem change, etc. | |
757 | */ | |
02f1175c | 758 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
1da177e4 | 759 | { |
02f1175c | 760 | int status; |
f7429034 | 761 | struct cyclades_card *cinfo = dev_id; |
02f1175c | 762 | void __iomem *base_addr, *card_base_addr; |
65f76a82 | 763 | unsigned int chip, too_many, had_work; |
02f1175c | 764 | int index; |
02f1175c | 765 | |
f7429034 | 766 | if (unlikely(cinfo == NULL)) { |
1da177e4 | 767 | #ifdef CY_DEBUG_INTERRUPTS |
15ed6cc0 AC |
768 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
769 | irq); | |
1da177e4 | 770 | #endif |
02f1175c JS |
771 | return IRQ_NONE; /* spurious interrupt */ |
772 | } | |
773 | ||
774 | card_base_addr = cinfo->base_addr; | |
775 | index = cinfo->bus_index; | |
776 | ||
f1e83c6c JS |
777 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
778 | if (unlikely(card_base_addr == NULL)) | |
779 | return IRQ_HANDLED; | |
780 | ||
02f1175c JS |
781 | /* This loop checks all chips in the card. Make a note whenever |
782 | _any_ chip had some work to do, as this is considered an | |
783 | indication that there will be more to do. Only when no chip | |
784 | has any work does this outermost loop exit. | |
785 | */ | |
786 | do { | |
787 | had_work = 0; | |
788 | for (chip = 0; chip < cinfo->num_chips; chip++) { | |
789 | base_addr = cinfo->base_addr + | |
790 | (cy_chip_offset[chip] << index); | |
791 | too_many = 0; | |
db05c3b1 | 792 | while ((status = readb(base_addr + |
02f1175c JS |
793 | (CySVRR << index))) != 0x00) { |
794 | had_work++; | |
795 | /* The purpose of the following test is to ensure that | |
796 | no chip can monopolize the driver. This forces the | |
797 | chips to be checked in a round-robin fashion (after | |
798 | draining each of a bunch (1000) of characters). | |
799 | */ | |
ce97a097 | 800 | if (1000 < too_many++) |
02f1175c | 801 | break; |
1c0a387c | 802 | spin_lock(&cinfo->card_lock); |
ce97a097 JS |
803 | if (status & CySRReceive) /* rx intr */ |
804 | cyy_chip_rx(cinfo, chip, base_addr); | |
805 | if (status & CySRTransmit) /* tx intr */ | |
806 | cyy_chip_tx(cinfo, chip, base_addr); | |
807 | if (status & CySRModem) /* modem intr */ | |
808 | cyy_chip_modem(cinfo, chip, base_addr); | |
1c0a387c | 809 | spin_unlock(&cinfo->card_lock); |
02f1175c JS |
810 | } |
811 | } | |
812 | } while (had_work); | |
813 | ||
814 | /* clear interrupts */ | |
815 | spin_lock(&cinfo->card_lock); | |
816 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); | |
817 | /* Cy_ClrIntr is 0x1800 */ | |
818 | spin_unlock(&cinfo->card_lock); | |
819 | return IRQ_HANDLED; | |
820 | } /* cyy_interrupt */ | |
1da177e4 | 821 | |
4d768200 JS |
822 | static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set, |
823 | unsigned int clear) | |
824 | { | |
825 | struct cyclades_card *card = info->card; | |
3aeea5b9 | 826 | int channel = info->line - card->first_line; |
0d348729 | 827 | u32 rts, dtr, msvrr, msvrd; |
4d768200 | 828 | |
4d768200 | 829 | channel &= 0x03; |
4d768200 | 830 | |
0d348729 JS |
831 | if (info->rtsdtr_inv) { |
832 | msvrr = CyMSVR2; | |
833 | msvrd = CyMSVR1; | |
834 | rts = CyDTR; | |
835 | dtr = CyRTS; | |
836 | } else { | |
837 | msvrr = CyMSVR1; | |
838 | msvrd = CyMSVR2; | |
839 | rts = CyRTS; | |
840 | dtr = CyDTR; | |
841 | } | |
4d768200 | 842 | if (set & TIOCM_RTS) { |
3aeea5b9 JS |
843 | cyy_writeb(info, CyCAR, channel); |
844 | cyy_writeb(info, msvrr, rts); | |
4d768200 JS |
845 | } |
846 | if (clear & TIOCM_RTS) { | |
3aeea5b9 JS |
847 | cyy_writeb(info, CyCAR, channel); |
848 | cyy_writeb(info, msvrr, ~rts); | |
4d768200 JS |
849 | } |
850 | if (set & TIOCM_DTR) { | |
3aeea5b9 JS |
851 | cyy_writeb(info, CyCAR, channel); |
852 | cyy_writeb(info, msvrd, dtr); | |
4d768200 JS |
853 | #ifdef CY_DEBUG_DTR |
854 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); | |
855 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
856 | cyy_readb(info, CyMSVR1), |
857 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
858 | #endif |
859 | } | |
860 | if (clear & TIOCM_DTR) { | |
3aeea5b9 JS |
861 | cyy_writeb(info, CyCAR, channel); |
862 | cyy_writeb(info, msvrd, ~dtr); | |
4d768200 JS |
863 | #ifdef CY_DEBUG_DTR |
864 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); | |
865 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", | |
3aeea5b9 JS |
866 | cyy_readb(info, CyMSVR1), |
867 | cyy_readb(info, CyMSVR2)); | |
4d768200 JS |
868 | #endif |
869 | } | |
870 | } | |
871 | ||
1da177e4 LT |
872 | /***********************************************************/ |
873 | /********* End of block of Cyclom-Y specific code **********/ | |
15ed6cc0 | 874 | /******** Start of block of Cyclades-Z specific code *******/ |
1da177e4 LT |
875 | /***********************************************************/ |
876 | ||
877 | static int | |
02f1175c | 878 | cyz_fetch_msg(struct cyclades_card *cinfo, |
15ed6cc0 | 879 | __u32 *channel, __u8 *cmd, __u32 *param) |
1da177e4 | 880 | { |
f0eefdc3 | 881 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c JS |
882 | unsigned long loc_doorbell; |
883 | ||
97e87f8e | 884 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
02f1175c JS |
885 | if (loc_doorbell) { |
886 | *cmd = (char)(0xff & loc_doorbell); | |
db05c3b1 JS |
887 | *channel = readl(&board_ctrl->fwcmd_channel); |
888 | *param = (__u32) readl(&board_ctrl->fwcmd_param); | |
97e87f8e | 889 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
02f1175c JS |
890 | return 1; |
891 | } | |
892 | return 0; | |
893 | } /* cyz_fetch_msg */ | |
1da177e4 LT |
894 | |
895 | static int | |
02f1175c | 896 | cyz_issue_cmd(struct cyclades_card *cinfo, |
1a86b5e3 | 897 | __u32 channel, __u8 cmd, __u32 param) |
1da177e4 | 898 | { |
f0eefdc3 | 899 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
1a86b5e3 | 900 | __u32 __iomem *pci_doorbell; |
65f76a82 | 901 | unsigned int index; |
02f1175c | 902 | |
2693f485 | 903 | if (!cyz_is_loaded(cinfo)) |
096dcfce | 904 | return -1; |
15ed6cc0 | 905 | |
02f1175c | 906 | index = 0; |
97e87f8e | 907 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
db05c3b1 | 908 | while ((readl(pci_doorbell) & 0xff) != 0) { |
15ed6cc0 | 909 | if (index++ == 1000) |
db05c3b1 | 910 | return (int)(readl(pci_doorbell) & 0xff); |
02f1175c JS |
911 | udelay(50L); |
912 | } | |
913 | cy_writel(&board_ctrl->hcmd_channel, channel); | |
914 | cy_writel(&board_ctrl->hcmd_param, param); | |
915 | cy_writel(pci_doorbell, (long)cmd); | |
916 | ||
096dcfce | 917 | return 0; |
02f1175c | 918 | } /* cyz_issue_cmd */ |
1da177e4 | 919 | |
dabe2c13 | 920 | static void cyz_handle_rx(struct cyclades_port *info) |
1da177e4 | 921 | { |
f0eefdc3 | 922 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 923 | struct cyclades_card *cinfo = info->card; |
227434f8 | 924 | struct tty_port *port = &info->port; |
65f76a82 | 925 | unsigned int char_count; |
02f1175c | 926 | int len; |
1da177e4 | 927 | #ifdef BLOCKMOVE |
ce71b0ff | 928 | unsigned char *buf; |
1da177e4 | 929 | #else |
02f1175c | 930 | char data; |
1da177e4 | 931 | #endif |
ad39c300 | 932 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
1da177e4 | 933 | |
db05c3b1 JS |
934 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
935 | rx_put = readl(&buf_ctrl->rx_put); | |
936 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); | |
937 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); | |
02f1175c JS |
938 | if (rx_put >= rx_get) |
939 | char_count = rx_put - rx_get; | |
940 | else | |
941 | char_count = rx_put - rx_get + rx_bufsize; | |
1da177e4 | 942 | |
dabe2c13 JS |
943 | if (!char_count) |
944 | return; | |
945 | ||
1da177e4 | 946 | #ifdef CY_ENABLE_MONITORING |
dabe2c13 JS |
947 | info->mon.int_count++; |
948 | info->mon.char_count += char_count; | |
949 | if (char_count > info->mon.char_max) | |
950 | info->mon.char_max = char_count; | |
951 | info->mon.char_last = char_count; | |
1da177e4 | 952 | #endif |
dabe2c13 | 953 | |
1da177e4 | 954 | #ifdef BLOCKMOVE |
dabe2c13 JS |
955 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
956 | for performance, but because of buffer boundaries, there | |
957 | may be several steps to the operation */ | |
958 | while (1) { | |
959 | len = tty_prepare_flip_string(port, &buf, | |
960 | char_count); | |
961 | if (!len) | |
962 | break; | |
ce71b0ff | 963 | |
dabe2c13 JS |
964 | len = min_t(unsigned int, min(len, char_count), |
965 | rx_bufsize - new_rx_get); | |
ce71b0ff | 966 | |
dabe2c13 JS |
967 | memcpy_fromio(buf, cinfo->base_addr + |
968 | rx_bufaddr + new_rx_get, len); | |
ce71b0ff | 969 | |
dabe2c13 JS |
970 | new_rx_get = (new_rx_get + len) & |
971 | (rx_bufsize - 1); | |
972 | char_count -= len; | |
973 | info->icount.rx += len; | |
974 | info->idle_stats.recv_bytes += len; | |
975 | } | |
1da177e4 | 976 | #else |
dabe2c13 JS |
977 | len = tty_buffer_request_room(port, char_count); |
978 | while (len--) { | |
979 | data = readb(cinfo->base_addr + rx_bufaddr + | |
980 | new_rx_get); | |
981 | new_rx_get = (new_rx_get + 1) & | |
982 | (rx_bufsize - 1); | |
983 | tty_insert_flip_char(port, data, TTY_NORMAL); | |
984 | info->idle_stats.recv_bytes++; | |
985 | info->icount.rx++; | |
986 | } | |
1da177e4 LT |
987 | #endif |
988 | #ifdef CONFIG_CYZ_INTR | |
dabe2c13 JS |
989 | /* Recalculate the number of chars in the RX buffer and issue |
990 | a cmd in case it's higher than the RX high water mark */ | |
991 | rx_put = readl(&buf_ctrl->rx_put); | |
992 | if (rx_put >= rx_get) | |
993 | char_count = rx_put - rx_get; | |
994 | else | |
995 | char_count = rx_put - rx_get + rx_bufsize; | |
996 | if (char_count >= readl(&buf_ctrl->rx_threshold) && | |
997 | !timer_pending(&cyz_rx_full_timer[ | |
998 | info->line])) | |
999 | mod_timer(&cyz_rx_full_timer[info->line], | |
1000 | jiffies + 1); | |
1da177e4 | 1001 | #endif |
dabe2c13 JS |
1002 | info->idle_stats.recv_idle = jiffies; |
1003 | tty_schedule_flip(&info->port); | |
1004 | ||
1005 | /* Update rx_get */ | |
1006 | cy_writel(&buf_ctrl->rx_get, new_rx_get); | |
1da177e4 LT |
1007 | } |
1008 | ||
dabe2c13 | 1009 | static void cyz_handle_tx(struct cyclades_port *info) |
1da177e4 | 1010 | { |
f0eefdc3 | 1011 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
875b206b | 1012 | struct cyclades_card *cinfo = info->card; |
dabe2c13 | 1013 | struct tty_struct *tty; |
65f76a82 JS |
1014 | u8 data; |
1015 | unsigned int char_count; | |
1da177e4 | 1016 | #ifdef BLOCKMOVE |
02f1175c | 1017 | int small_count; |
1da177e4 | 1018 | #endif |
ad39c300 | 1019 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
1da177e4 | 1020 | |
02f1175c JS |
1021 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
1022 | return; | |
1da177e4 | 1023 | |
db05c3b1 JS |
1024 | tx_get = readl(&buf_ctrl->tx_get); |
1025 | tx_put = readl(&buf_ctrl->tx_put); | |
1026 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
1027 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); | |
02f1175c JS |
1028 | if (tx_put >= tx_get) |
1029 | char_count = tx_get - tx_put - 1 + tx_bufsize; | |
1030 | else | |
1031 | char_count = tx_get - tx_put - 1; | |
1da177e4 | 1032 | |
dabe2c13 JS |
1033 | if (!char_count) |
1034 | return; | |
1035 | ||
1036 | tty = tty_port_tty_get(&info->port); | |
1037 | if (tty == NULL) | |
1038 | goto ztxdone; | |
1da177e4 | 1039 | |
dabe2c13 JS |
1040 | if (info->x_char) { /* send special char */ |
1041 | data = info->x_char; | |
1da177e4 | 1042 | |
dabe2c13 JS |
1043 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
1044 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1045 | info->x_char = 0; | |
1046 | char_count--; | |
1047 | info->icount.tx++; | |
1048 | } | |
1da177e4 | 1049 | #ifdef BLOCKMOVE |
dabe2c13 JS |
1050 | while (0 < (small_count = min_t(unsigned int, |
1051 | tx_bufsize - tx_put, min_t(unsigned int, | |
1052 | (SERIAL_XMIT_SIZE - info->xmit_tail), | |
1053 | min_t(unsigned int, info->xmit_cnt, | |
1054 | char_count))))) { | |
1055 | ||
1056 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put), | |
1057 | &info->port.xmit_buf[info->xmit_tail], | |
1058 | small_count); | |
1059 | ||
1060 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); | |
1061 | char_count -= small_count; | |
1062 | info->icount.tx += small_count; | |
1063 | info->xmit_cnt -= small_count; | |
1064 | info->xmit_tail = (info->xmit_tail + small_count) & | |
1065 | (SERIAL_XMIT_SIZE - 1); | |
1066 | } | |
1da177e4 | 1067 | #else |
dabe2c13 JS |
1068 | while (info->xmit_cnt && char_count) { |
1069 | data = info->port.xmit_buf[info->xmit_tail]; | |
1070 | info->xmit_cnt--; | |
1071 | info->xmit_tail = (info->xmit_tail + 1) & | |
1072 | (SERIAL_XMIT_SIZE - 1); | |
1073 | ||
1074 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); | |
1075 | tx_put = (tx_put + 1) & (tx_bufsize - 1); | |
1076 | char_count--; | |
1077 | info->icount.tx++; | |
1078 | } | |
1da177e4 | 1079 | #endif |
dabe2c13 JS |
1080 | tty_wakeup(tty); |
1081 | tty_kref_put(tty); | |
7fa57a0c | 1082 | ztxdone: |
dabe2c13 JS |
1083 | /* Update tx_put */ |
1084 | cy_writel(&buf_ctrl->tx_put, tx_put); | |
1da177e4 LT |
1085 | } |
1086 | ||
02f1175c | 1087 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
1da177e4 | 1088 | { |
f0eefdc3 | 1089 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
02f1175c | 1090 | struct cyclades_port *info; |
101b8159 | 1091 | __u32 channel, param, fw_ver; |
1a86b5e3 | 1092 | __u8 cmd; |
02f1175c JS |
1093 | int special_count; |
1094 | int delta_count; | |
1095 | ||
db05c3b1 | 1096 | fw_ver = readl(&board_ctrl->fw_version); |
02f1175c JS |
1097 | |
1098 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { | |
1099 | special_count = 0; | |
1100 | delta_count = 0; | |
dd025c0c | 1101 | info = &cinfo->ports[channel]; |
f7429034 | 1102 | |
02f1175c JS |
1103 | switch (cmd) { |
1104 | case C_CM_PR_ERROR: | |
92a19f9c | 1105 | tty_insert_flip_char(&info->port, 0, TTY_PARITY); |
02f1175c JS |
1106 | info->icount.rx++; |
1107 | special_count++; | |
1108 | break; | |
1109 | case C_CM_FR_ERROR: | |
92a19f9c | 1110 | tty_insert_flip_char(&info->port, 0, TTY_FRAME); |
02f1175c JS |
1111 | info->icount.rx++; |
1112 | special_count++; | |
1113 | break; | |
1114 | case C_CM_RXBRK: | |
92a19f9c | 1115 | tty_insert_flip_char(&info->port, 0, TTY_BREAK); |
02f1175c JS |
1116 | info->icount.rx++; |
1117 | special_count++; | |
1118 | break; | |
1119 | case C_CM_MDCD: | |
1120 | info->icount.dcd++; | |
1121 | delta_count++; | |
77451e53 | 1122 | if (info->port.flags & ASYNC_CHECK_CD) { |
f0eefdc3 JS |
1123 | u32 dcd = fw_ver > 241 ? param : |
1124 | readl(&info->u.cyz.ch_ctrl->rs_status); | |
174e6fe0 | 1125 | if (dcd & C_RS_DCD) |
77451e53 | 1126 | wake_up_interruptible(&info->port.open_wait); |
aa27a094 JS |
1127 | else |
1128 | tty_port_tty_hangup(&info->port, false); | |
02f1175c JS |
1129 | } |
1130 | break; | |
1131 | case C_CM_MCTS: | |
1132 | info->icount.cts++; | |
1133 | delta_count++; | |
1134 | break; | |
1135 | case C_CM_MRI: | |
1136 | info->icount.rng++; | |
1137 | delta_count++; | |
1138 | break; | |
1139 | case C_CM_MDSR: | |
1140 | info->icount.dsr++; | |
1141 | delta_count++; | |
1142 | break; | |
1da177e4 | 1143 | #ifdef Z_WAKE |
02f1175c | 1144 | case C_CM_IOCTLW: |
ebafeeff | 1145 | complete(&info->shutdown_wait); |
02f1175c | 1146 | break; |
1da177e4 LT |
1147 | #endif |
1148 | #ifdef CONFIG_CYZ_INTR | |
02f1175c JS |
1149 | case C_CM_RXHIWM: |
1150 | case C_CM_RXNNDT: | |
1151 | case C_CM_INTBACK2: | |
1152 | /* Reception Interrupt */ | |
1da177e4 | 1153 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1154 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
1155 | "port %ld\n", info->card, channel); | |
1da177e4 | 1156 | #endif |
dabe2c13 | 1157 | cyz_handle_rx(info); |
02f1175c JS |
1158 | break; |
1159 | case C_CM_TXBEMPTY: | |
1160 | case C_CM_TXLOWWM: | |
1161 | case C_CM_INTBACK: | |
1162 | /* Transmission Interrupt */ | |
1da177e4 | 1163 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1164 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
1165 | "port %ld\n", info->card, channel); | |
1da177e4 | 1166 | #endif |
dabe2c13 | 1167 | cyz_handle_tx(info); |
02f1175c JS |
1168 | break; |
1169 | #endif /* CONFIG_CYZ_INTR */ | |
1170 | case C_CM_FATAL: | |
1171 | /* should do something with this !!! */ | |
1172 | break; | |
1173 | default: | |
1174 | break; | |
1175 | } | |
1176 | if (delta_count) | |
bdc04e31 | 1177 | wake_up_interruptible(&info->port.delta_msr_wait); |
02f1175c | 1178 | if (special_count) |
6732c8bb | 1179 | tty_schedule_flip(&info->port); |
1da177e4 | 1180 | } |
1da177e4 LT |
1181 | } |
1182 | ||
1183 | #ifdef CONFIG_CYZ_INTR | |
02f1175c | 1184 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
1da177e4 | 1185 | { |
f7429034 | 1186 | struct cyclades_card *cinfo = dev_id; |
1da177e4 | 1187 | |
2693f485 | 1188 | if (unlikely(!cyz_is_loaded(cinfo))) { |
1da177e4 | 1189 | #ifdef CY_DEBUG_INTERRUPTS |
21719191 JS |
1190 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
1191 | "(IRQ%d).\n", irq); | |
1da177e4 | 1192 | #endif |
02f1175c JS |
1193 | return IRQ_NONE; |
1194 | } | |
1da177e4 | 1195 | |
02f1175c JS |
1196 | /* Handle the interrupts */ |
1197 | cyz_handle_cmd(cinfo); | |
1da177e4 | 1198 | |
02f1175c JS |
1199 | return IRQ_HANDLED; |
1200 | } /* cyz_interrupt */ | |
1da177e4 | 1201 | |
02f1175c | 1202 | static void cyz_rx_restart(unsigned long arg) |
1da177e4 | 1203 | { |
02f1175c | 1204 | struct cyclades_port *info = (struct cyclades_port *)arg; |
875b206b | 1205 | struct cyclades_card *card = info->card; |
02f1175c | 1206 | int retval; |
875b206b | 1207 | __u32 channel = info->line - card->first_line; |
02f1175c JS |
1208 | unsigned long flags; |
1209 | ||
9fa1b3b1 | 1210 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1211 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
02f1175c | 1212 | if (retval != 0) { |
21719191 | 1213 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
02f1175c JS |
1214 | info->line, retval); |
1215 | } | |
9fa1b3b1 | 1216 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 LT |
1217 | } |
1218 | ||
02f1175c | 1219 | #else /* CONFIG_CYZ_INTR */ |
1da177e4 | 1220 | |
02f1175c | 1221 | static void cyz_poll(unsigned long arg) |
1da177e4 | 1222 | { |
02f1175c JS |
1223 | struct cyclades_card *cinfo; |
1224 | struct cyclades_port *info; | |
b7050906 | 1225 | unsigned long expires = jiffies + HZ; |
65f76a82 | 1226 | unsigned int port, card; |
1da177e4 | 1227 | |
02f1175c JS |
1228 | for (card = 0; card < NR_CARDS; card++) { |
1229 | cinfo = &cy_card[card]; | |
1230 | ||
2693f485 | 1231 | if (!cy_is_Z(cinfo)) |
02f1175c | 1232 | continue; |
2693f485 | 1233 | if (!cyz_is_loaded(cinfo)) |
02f1175c JS |
1234 | continue; |
1235 | ||
1da177e4 | 1236 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
02f1175c | 1237 | if (!cinfo->intr_enabled) { |
02f1175c JS |
1238 | cinfo->intr_enabled = 1; |
1239 | continue; | |
1240 | } | |
1da177e4 | 1241 | |
02f1175c | 1242 | cyz_handle_cmd(cinfo); |
1da177e4 | 1243 | |
02f1175c | 1244 | for (port = 0; port < cinfo->nports; port++) { |
dd025c0c | 1245 | info = &cinfo->ports[port]; |
d13549f8 | 1246 | |
02f1175c | 1247 | if (!info->throttle) |
dabe2c13 JS |
1248 | cyz_handle_rx(info); |
1249 | cyz_handle_tx(info); | |
02f1175c JS |
1250 | } |
1251 | /* poll every 'cyz_polling_cycle' period */ | |
b7050906 | 1252 | expires = jiffies + cyz_polling_cycle; |
1da177e4 | 1253 | } |
b7050906 | 1254 | mod_timer(&cyz_timerlist, expires); |
02f1175c | 1255 | } /* cyz_poll */ |
1da177e4 | 1256 | |
02f1175c | 1257 | #endif /* CONFIG_CYZ_INTR */ |
1da177e4 LT |
1258 | |
1259 | /********** End of block of Cyclades-Z specific code *********/ | |
1260 | /***********************************************************/ | |
1261 | ||
1da177e4 LT |
1262 | /* This is called whenever a port becomes active; |
1263 | interrupts are enabled and DTR & RTS are turned on. | |
1264 | */ | |
d13549f8 | 1265 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1266 | { |
875b206b | 1267 | struct cyclades_card *card; |
02f1175c JS |
1268 | unsigned long flags; |
1269 | int retval = 0; | |
cc7fdf49 | 1270 | int channel; |
02f1175c | 1271 | unsigned long page; |
1da177e4 | 1272 | |
02f1175c | 1273 | card = info->card; |
875b206b | 1274 | channel = info->line - card->first_line; |
1da177e4 | 1275 | |
02f1175c JS |
1276 | page = get_zeroed_page(GFP_KERNEL); |
1277 | if (!page) | |
1278 | return -ENOMEM; | |
1da177e4 | 1279 | |
9fa1b3b1 | 1280 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1281 | |
cc7fdf49 | 1282 | if (info->port.flags & ASYNC_INITIALIZED) |
02f1175c | 1283 | goto errout; |
1da177e4 | 1284 | |
02f1175c | 1285 | if (!info->type) { |
d13549f8 | 1286 | set_bit(TTY_IO_ERROR, &tty->flags); |
02f1175c JS |
1287 | goto errout; |
1288 | } | |
1da177e4 | 1289 | |
77451e53 | 1290 | if (info->port.xmit_buf) |
02f1175c JS |
1291 | free_page(page); |
1292 | else | |
77451e53 | 1293 | info->port.xmit_buf = (unsigned char *)page; |
1da177e4 | 1294 | |
9fa1b3b1 | 1295 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 1296 | |
d13549f8 | 1297 | cy_set_line_char(info, tty); |
1da177e4 | 1298 | |
2693f485 | 1299 | if (!cy_is_Z(card)) { |
02f1175c | 1300 | channel &= 0x03; |
1da177e4 | 1301 | |
9fa1b3b1 | 1302 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1303 | |
3aeea5b9 | 1304 | cyy_writeb(info, CyCAR, channel); |
1da177e4 | 1305 | |
3aeea5b9 | 1306 | cyy_writeb(info, CyRTPR, |
02f1175c JS |
1307 | (info->default_timeout ? info->default_timeout : 0x02)); |
1308 | /* 10ms rx timeout */ | |
1da177e4 | 1309 | |
3aeea5b9 | 1310 | cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR); |
1da177e4 | 1311 | |
4d768200 | 1312 | cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0); |
1da177e4 | 1313 | |
3aeea5b9 | 1314 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData); |
02f1175c | 1315 | } else { |
f0eefdc3 | 1316 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1da177e4 | 1317 | |
2693f485 | 1318 | if (!cyz_is_loaded(card)) |
02f1175c | 1319 | return -ENODEV; |
1da177e4 | 1320 | |
1da177e4 | 1321 | #ifdef CY_DEBUG_OPEN |
21719191 | 1322 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
f0eefdc3 | 1323 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 | 1324 | #endif |
9fa1b3b1 | 1325 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1326 | |
f0eefdc3 | 1327 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
1da177e4 LT |
1328 | #ifdef Z_WAKE |
1329 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1330 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1331 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1332 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); | |
1da177e4 | 1333 | #else |
f0eefdc3 | 1334 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1335 | C_IN_IOCTLW | C_IN_MDCD); |
1336 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 LT |
1337 | #else |
1338 | #ifdef CONFIG_CYZ_INTR | |
f0eefdc3 | 1339 | cy_writel(&ch_ctrl->intr_enable, |
02f1175c JS |
1340 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
1341 | C_IN_RXNNDT | C_IN_MDCD); | |
1da177e4 | 1342 | #else |
f0eefdc3 | 1343 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
02f1175c JS |
1344 | #endif /* CONFIG_CYZ_INTR */ |
1345 | #endif /* Z_WAKE */ | |
1346 | ||
875b206b | 1347 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 1348 | if (retval != 0) { |
21719191 JS |
1349 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
1350 | "%x\n", info->line, retval); | |
02f1175c | 1351 | } |
1da177e4 | 1352 | |
02f1175c | 1353 | /* Flush RX buffers before raising DTR and RTS */ |
875b206b | 1354 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
02f1175c | 1355 | if (retval != 0) { |
21719191 JS |
1356 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
1357 | "%x\n", info->line, retval); | |
02f1175c | 1358 | } |
1da177e4 | 1359 | |
02f1175c JS |
1360 | /* set timeout !!! */ |
1361 | /* set RTS and DTR !!! */ | |
4d768200 | 1362 | tty_port_raise_dtr_rts(&info->port); |
1da177e4 | 1363 | |
02f1175c | 1364 | /* enable send, recv, modem !!! */ |
cc7fdf49 | 1365 | } |
02f1175c | 1366 | |
cc7fdf49 | 1367 | info->port.flags |= ASYNC_INITIALIZED; |
1da177e4 | 1368 | |
cc7fdf49 JS |
1369 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1370 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1371 | info->breakon = info->breakoff = 0; | |
1372 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); | |
1373 | info->idle_stats.in_use = | |
1374 | info->idle_stats.recv_idle = | |
1375 | info->idle_stats.xmit_idle = jiffies; | |
1376 | ||
1377 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1da177e4 LT |
1378 | |
1379 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1380 | printk(KERN_DEBUG "cyc startup done\n"); |
1da177e4 LT |
1381 | #endif |
1382 | return 0; | |
1383 | ||
1384 | errout: | |
9fa1b3b1 | 1385 | spin_unlock_irqrestore(&card->card_lock, flags); |
cc7fdf49 | 1386 | free_page(page); |
1da177e4 | 1387 | return retval; |
02f1175c | 1388 | } /* startup */ |
1da177e4 | 1389 | |
02f1175c | 1390 | static void start_xmit(struct cyclades_port *info) |
1da177e4 | 1391 | { |
3aeea5b9 | 1392 | struct cyclades_card *card = info->card; |
02f1175c | 1393 | unsigned long flags; |
3aeea5b9 | 1394 | int channel = info->line - card->first_line; |
1da177e4 | 1395 | |
2693f485 | 1396 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1397 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
1398 | cyy_writeb(info, CyCAR, channel & 0x03); |
1399 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 1400 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1401 | } else { |
1da177e4 | 1402 | #ifdef CONFIG_CYZ_INTR |
02f1175c | 1403 | int retval; |
1da177e4 | 1404 | |
9fa1b3b1 | 1405 | spin_lock_irqsave(&card->card_lock, flags); |
875b206b | 1406 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
02f1175c | 1407 | if (retval != 0) { |
21719191 JS |
1408 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
1409 | "%x\n", info->line, retval); | |
02f1175c | 1410 | } |
9fa1b3b1 | 1411 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
1412 | #else /* CONFIG_CYZ_INTR */ |
1413 | /* Don't have to do anything at this time */ | |
1414 | #endif /* CONFIG_CYZ_INTR */ | |
1415 | } | |
1416 | } /* start_xmit */ | |
1da177e4 LT |
1417 | |
1418 | /* | |
1419 | * This routine shuts down a serial port; interrupts are disabled, | |
1420 | * and DTR is dropped if the hangup on close termio flag is on. | |
1421 | */ | |
d13549f8 | 1422 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1423 | { |
875b206b | 1424 | struct cyclades_card *card; |
02f1175c | 1425 | unsigned long flags; |
02f1175c | 1426 | |
77451e53 | 1427 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
02f1175c | 1428 | return; |
02f1175c JS |
1429 | |
1430 | card = info->card; | |
2693f485 | 1431 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 1432 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1433 | |
1434 | /* Clear delta_msr_wait queue to avoid mem leaks. */ | |
bdc04e31 | 1435 | wake_up_interruptible(&info->port.delta_msr_wait); |
1da177e4 | 1436 | |
77451e53 | 1437 | if (info->port.xmit_buf) { |
02f1175c | 1438 | unsigned char *temp; |
77451e53 AC |
1439 | temp = info->port.xmit_buf; |
1440 | info->port.xmit_buf = NULL; | |
02f1175c JS |
1441 | free_page((unsigned long)temp); |
1442 | } | |
adc8d746 | 1443 | if (tty->termios.c_cflag & HUPCL) |
4d768200 JS |
1444 | cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR); |
1445 | ||
3aeea5b9 | 1446 | cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR); |
02f1175c JS |
1447 | /* it may be appropriate to clear _XMIT at |
1448 | some later date (after testing)!!! */ | |
1449 | ||
d13549f8 | 1450 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1451 | info->port.flags &= ~ASYNC_INITIALIZED; |
9fa1b3b1 | 1452 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1453 | } else { |
1da177e4 | 1454 | #ifdef CY_DEBUG_OPEN |
0e7f4194 | 1455 | int channel = info->line - card->first_line; |
21719191 | 1456 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
f0eefdc3 | 1457 | "base_addr %p\n", card, channel, card->base_addr); |
1da177e4 LT |
1458 | #endif |
1459 | ||
2693f485 | 1460 | if (!cyz_is_loaded(card)) |
02f1175c | 1461 | return; |
1da177e4 | 1462 | |
9fa1b3b1 | 1463 | spin_lock_irqsave(&card->card_lock, flags); |
1da177e4 | 1464 | |
77451e53 | 1465 | if (info->port.xmit_buf) { |
02f1175c | 1466 | unsigned char *temp; |
77451e53 AC |
1467 | temp = info->port.xmit_buf; |
1468 | info->port.xmit_buf = NULL; | |
02f1175c | 1469 | free_page((unsigned long)temp); |
1da177e4 | 1470 | } |
02f1175c | 1471 | |
adc8d746 | 1472 | if (tty->termios.c_cflag & HUPCL) |
4d768200 | 1473 | tty_port_lower_dtr_rts(&info->port); |
1da177e4 | 1474 | |
d13549f8 | 1475 | set_bit(TTY_IO_ERROR, &tty->flags); |
77451e53 | 1476 | info->port.flags &= ~ASYNC_INITIALIZED; |
02f1175c | 1477 | |
9fa1b3b1 | 1478 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 1479 | } |
1da177e4 LT |
1480 | |
1481 | #ifdef CY_DEBUG_OPEN | |
21719191 | 1482 | printk(KERN_DEBUG "cyc shutdown done\n"); |
1da177e4 | 1483 | #endif |
02f1175c | 1484 | } /* shutdown */ |
1da177e4 LT |
1485 | |
1486 | /* | |
1487 | * ------------------------------------------------------------ | |
1488 | * cy_open() and friends | |
1489 | * ------------------------------------------------------------ | |
1490 | */ | |
1491 | ||
1da177e4 LT |
1492 | /* |
1493 | * This routine is called whenever a serial port is opened. It | |
1494 | * performs the serial-specific initialization for the tty structure. | |
1495 | */ | |
02f1175c | 1496 | static int cy_open(struct tty_struct *tty, struct file *filp) |
1da177e4 | 1497 | { |
02f1175c | 1498 | struct cyclades_port *info; |
410235fd | 1499 | unsigned int i, line = tty->index; |
65f76a82 | 1500 | int retval; |
1da177e4 | 1501 | |
dd025c0c JS |
1502 | for (i = 0; i < NR_CARDS; i++) |
1503 | if (line < cy_card[i].first_line + cy_card[i].nports && | |
1504 | line >= cy_card[i].first_line) | |
1505 | break; | |
1506 | if (i >= NR_CARDS) | |
1507 | return -ENODEV; | |
1508 | info = &cy_card[i].ports[line - cy_card[i].first_line]; | |
15ed6cc0 | 1509 | if (info->line < 0) |
02f1175c | 1510 | return -ENODEV; |
1da177e4 | 1511 | |
02f1175c JS |
1512 | /* If the card's firmware hasn't been loaded, |
1513 | treat it as absent from the system. This | |
1514 | will make the user pay attention. | |
1515 | */ | |
2693f485 | 1516 | if (cy_is_Z(info->card)) { |
875b206b | 1517 | struct cyclades_card *cinfo = info->card; |
02f1175c JS |
1518 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
1519 | ||
2693f485 JS |
1520 | if (!cyz_is_loaded(cinfo)) { |
1521 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && | |
101b8159 JS |
1522 | readl(&firm_id->signature) == |
1523 | ZFIRM_HLT) { | |
21719191 JS |
1524 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
1525 | "need an external power supply for " | |
1526 | "this number of ports.\nFirmware " | |
1527 | "halted.\n"); | |
02f1175c | 1528 | } else { |
21719191 JS |
1529 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
1530 | "yet loaded\n"); | |
02f1175c JS |
1531 | } |
1532 | return -ENODEV; | |
1533 | } | |
1534 | #ifdef CONFIG_CYZ_INTR | |
1535 | else { | |
1536 | /* In case this Z board is operating in interrupt mode, its | |
1537 | interrupts should be enabled as soon as the first open | |
1538 | happens to one of its ports. */ | |
1539 | if (!cinfo->intr_enabled) { | |
97e87f8e | 1540 | u16 intr; |
02f1175c | 1541 | |
02f1175c | 1542 | /* Enable interrupts on the PLX chip */ |
97e87f8e JS |
1543 | intr = readw(&cinfo->ctl_addr.p9060-> |
1544 | intr_ctrl_stat) | 0x0900; | |
1545 | cy_writew(&cinfo->ctl_addr.p9060-> | |
1546 | intr_ctrl_stat, intr); | |
02f1175c JS |
1547 | /* Enable interrupts on the FW */ |
1548 | retval = cyz_issue_cmd(cinfo, 0, | |
1549 | C_CM_IRQ_ENBL, 0L); | |
1550 | if (retval != 0) { | |
21719191 JS |
1551 | printk(KERN_ERR "cyc:IRQ enable retval " |
1552 | "was %x\n", retval); | |
02f1175c | 1553 | } |
02f1175c JS |
1554 | cinfo->intr_enabled = 1; |
1555 | } | |
1da177e4 | 1556 | } |
02f1175c JS |
1557 | #endif /* CONFIG_CYZ_INTR */ |
1558 | /* Make sure this Z port really exists in hardware */ | |
1559 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) | |
1560 | return -ENODEV; | |
1da177e4 | 1561 | } |
1da177e4 | 1562 | #ifdef CY_DEBUG_OTHER |
21719191 | 1563 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
1da177e4 | 1564 | #endif |
02f1175c | 1565 | tty->driver_data = info; |
15ed6cc0 | 1566 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
02f1175c | 1567 | return -ENODEV; |
15ed6cc0 | 1568 | |
1da177e4 | 1569 | #ifdef CY_DEBUG_OPEN |
21719191 | 1570 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
77451e53 | 1571 | info->port.count); |
1da177e4 | 1572 | #endif |
77451e53 | 1573 | info->port.count++; |
1da177e4 | 1574 | #ifdef CY_DEBUG_COUNT |
21719191 | 1575 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
77451e53 | 1576 | current->pid, info->port.count); |
1da177e4 | 1577 | #endif |
1da177e4 | 1578 | |
02f1175c JS |
1579 | /* |
1580 | * Start up serial port | |
1581 | */ | |
d13549f8 | 1582 | retval = cy_startup(info, tty); |
15ed6cc0 | 1583 | if (retval) |
02f1175c | 1584 | return retval; |
1da177e4 | 1585 | |
f0737579 | 1586 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
02f1175c | 1587 | if (retval) { |
1da177e4 | 1588 | #ifdef CY_DEBUG_OPEN |
21719191 JS |
1589 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
1590 | "with %d\n", retval); | |
1da177e4 | 1591 | #endif |
02f1175c JS |
1592 | return retval; |
1593 | } | |
1da177e4 | 1594 | |
02f1175c | 1595 | info->throttle = 0; |
d13549f8 | 1596 | tty_port_tty_set(&info->port, tty); |
1da177e4 | 1597 | |
02f1175c | 1598 | #ifdef CY_DEBUG_OPEN |
21719191 | 1599 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
02f1175c JS |
1600 | #endif |
1601 | return 0; | |
1602 | } /* cy_open */ | |
1da177e4 LT |
1603 | |
1604 | /* | |
1605 | * cy_wait_until_sent() --- wait until the transmitter is empty | |
1606 | */ | |
02f1175c | 1607 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
1da177e4 | 1608 | { |
875b206b | 1609 | struct cyclades_card *card; |
cab9bdd1 | 1610 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1611 | unsigned long orig_jiffies; |
1612 | int char_time; | |
1613 | ||
1614 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) | |
1615 | return; | |
1616 | ||
1617 | if (info->xmit_fifo_size == 0) | |
1618 | return; /* Just in case.... */ | |
1da177e4 | 1619 | |
02f1175c JS |
1620 | orig_jiffies = jiffies; |
1621 | /* | |
1622 | * Set the check interval to be 1/5 of the estimated time to | |
1623 | * send a single character, and make it at least 1. The check | |
1624 | * interval should also be less than the timeout. | |
1625 | * | |
1626 | * Note: we have to use pretty tight timings here to satisfy | |
1627 | * the NIST-PCTS. | |
1628 | */ | |
1629 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; | |
1630 | char_time = char_time / 5; | |
1631 | if (char_time <= 0) | |
1632 | char_time = 1; | |
1633 | if (timeout < 0) | |
1634 | timeout = 0; | |
1635 | if (timeout) | |
1636 | char_time = min(char_time, timeout); | |
1637 | /* | |
1638 | * If the transmitter hasn't cleared in twice the approximate | |
1639 | * amount of time to send the entire FIFO, it probably won't | |
1640 | * ever clear. This assumes the UART isn't doing flow | |
1641 | * control, which is currently the case. Hence, if it ever | |
1642 | * takes longer than info->timeout, this is probably due to a | |
1643 | * UART bug of some kind. So, we clamp the timeout parameter at | |
1644 | * 2*info->timeout. | |
1645 | */ | |
1646 | if (!timeout || timeout > 2 * info->timeout) | |
1647 | timeout = 2 * info->timeout; | |
8bab534b | 1648 | |
02f1175c | 1649 | card = info->card; |
2693f485 | 1650 | if (!cy_is_Z(card)) { |
3aeea5b9 | 1651 | while (cyy_readb(info, CySRER) & CyTxRdy) { |
02f1175c JS |
1652 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
1653 | break; | |
1654 | if (timeout && time_after(jiffies, orig_jiffies + | |
1655 | timeout)) | |
1656 | break; | |
1657 | } | |
1da177e4 | 1658 | } |
02f1175c JS |
1659 | /* Run one more char cycle */ |
1660 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); | |
1da177e4 LT |
1661 | } |
1662 | ||
978e595f AC |
1663 | static void cy_flush_buffer(struct tty_struct *tty) |
1664 | { | |
1665 | struct cyclades_port *info = tty->driver_data; | |
1666 | struct cyclades_card *card; | |
1667 | int channel, retval; | |
1668 | unsigned long flags; | |
1669 | ||
1670 | #ifdef CY_DEBUG_IO | |
1671 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); | |
1672 | #endif | |
1673 | ||
1674 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) | |
1675 | return; | |
1676 | ||
1677 | card = info->card; | |
1678 | channel = info->line - card->first_line; | |
1679 | ||
1680 | spin_lock_irqsave(&card->card_lock, flags); | |
1681 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; | |
1682 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1683 | ||
2693f485 | 1684 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
978e595f AC |
1685 | buffers as well */ |
1686 | spin_lock_irqsave(&card->card_lock, flags); | |
1687 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); | |
1688 | if (retval != 0) { | |
1689 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " | |
1690 | "was %x\n", info->line, retval); | |
1691 | } | |
1692 | spin_unlock_irqrestore(&card->card_lock, flags); | |
1693 | } | |
1694 | tty_wakeup(tty); | |
1695 | } /* cy_flush_buffer */ | |
1696 | ||
1697 | ||
e936ffd5 | 1698 | static void cy_do_close(struct tty_port *port) |
1da177e4 | 1699 | { |
e936ffd5 AC |
1700 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
1701 | port); | |
9fa1b3b1 | 1702 | struct cyclades_card *card; |
02f1175c | 1703 | unsigned long flags; |
3aeea5b9 | 1704 | int channel; |
1da177e4 | 1705 | |
9fa1b3b1 | 1706 | card = info->card; |
3aeea5b9 | 1707 | channel = info->line - card->first_line; |
9fa1b3b1 | 1708 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1709 | |
2693f485 | 1710 | if (!cy_is_Z(card)) { |
02f1175c | 1711 | /* Stop accepting input */ |
3aeea5b9 JS |
1712 | cyy_writeb(info, CyCAR, channel & 0x03); |
1713 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData); | |
77451e53 | 1714 | if (info->port.flags & ASYNC_INITIALIZED) { |
15ed6cc0 AC |
1715 | /* Waiting for on-board buffers to be empty before |
1716 | closing the port */ | |
9fa1b3b1 | 1717 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 | 1718 | cy_wait_until_sent(port->tty, info->timeout); |
9fa1b3b1 | 1719 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
1720 | } |
1721 | } else { | |
1722 | #ifdef Z_WAKE | |
15ed6cc0 AC |
1723 | /* Waiting for on-board buffers to be empty before closing |
1724 | the port */ | |
f0eefdc3 | 1725 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
02f1175c JS |
1726 | int retval; |
1727 | ||
f0eefdc3 | 1728 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
9fa1b3b1 | 1729 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
02f1175c | 1730 | if (retval != 0) { |
21719191 JS |
1731 | printk(KERN_DEBUG "cyc:cy_close retval on " |
1732 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c | 1733 | } |
9fa1b3b1 | 1734 | spin_unlock_irqrestore(&card->card_lock, flags); |
2c7fea99 | 1735 | wait_for_completion_interruptible(&info->shutdown_wait); |
9fa1b3b1 | 1736 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c | 1737 | } |
1da177e4 | 1738 | #endif |
02f1175c | 1739 | } |
9fa1b3b1 | 1740 | spin_unlock_irqrestore(&card->card_lock, flags); |
e936ffd5 AC |
1741 | cy_shutdown(info, port->tty); |
1742 | } | |
1da177e4 | 1743 | |
e936ffd5 AC |
1744 | /* |
1745 | * This routine is called when a particular tty device is closed. | |
1746 | */ | |
1747 | static void cy_close(struct tty_struct *tty, struct file *filp) | |
1748 | { | |
1749 | struct cyclades_port *info = tty->driver_data; | |
1750 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) | |
1751 | return; | |
1752 | tty_port_close(&info->port, tty, filp); | |
02f1175c | 1753 | } /* cy_close */ |
1da177e4 LT |
1754 | |
1755 | /* This routine gets called when tty_write has put something into | |
1756 | * the write_queue. The characters may come from user space or | |
1757 | * kernel space. | |
1758 | * | |
1759 | * This routine will return the number of characters actually | |
1760 | * accepted for writing. | |
1761 | * | |
1762 | * If the port is not already transmitting stuff, start it off by | |
1763 | * enabling interrupts. The interrupt service routine will then | |
1764 | * ensure that the characters are sent. | |
1765 | * If the port is already active, there is no need to kick it. | |
1766 | * | |
1767 | */ | |
02f1175c | 1768 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
1da177e4 | 1769 | { |
cab9bdd1 | 1770 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1771 | unsigned long flags; |
1772 | int c, ret = 0; | |
1da177e4 LT |
1773 | |
1774 | #ifdef CY_DEBUG_IO | |
21719191 | 1775 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
1da177e4 LT |
1776 | #endif |
1777 | ||
15ed6cc0 | 1778 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
02f1175c | 1779 | return 0; |
1da177e4 | 1780 | |
77451e53 | 1781 | if (!info->port.xmit_buf) |
02f1175c | 1782 | return 0; |
1da177e4 | 1783 | |
9fa1b3b1 | 1784 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 1785 | while (1) { |
1a4e2351 HH |
1786 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
1787 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); | |
02f1175c JS |
1788 | |
1789 | if (c <= 0) | |
1790 | break; | |
1791 | ||
77451e53 | 1792 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
02f1175c JS |
1793 | info->xmit_head = (info->xmit_head + c) & |
1794 | (SERIAL_XMIT_SIZE - 1); | |
1795 | info->xmit_cnt += c; | |
1796 | buf += c; | |
1797 | count -= c; | |
1798 | ret += c; | |
1799 | } | |
9fa1b3b1 | 1800 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
02f1175c JS |
1801 | |
1802 | info->idle_stats.xmit_bytes += ret; | |
1803 | info->idle_stats.xmit_idle = jiffies; | |
1804 | ||
15ed6cc0 | 1805 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
02f1175c | 1806 | start_xmit(info); |
15ed6cc0 | 1807 | |
02f1175c JS |
1808 | return ret; |
1809 | } /* cy_write */ | |
1da177e4 LT |
1810 | |
1811 | /* | |
1812 | * This routine is called by the kernel to write a single | |
1813 | * character to the tty device. If the kernel uses this routine, | |
1814 | * it must call the flush_chars() routine (if defined) when it is | |
1815 | * done stuffing characters into the driver. If there is no room | |
1816 | * in the queue, the character is ignored. | |
1817 | */ | |
76b25a55 | 1818 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
1da177e4 | 1819 | { |
cab9bdd1 | 1820 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1821 | unsigned long flags; |
1da177e4 LT |
1822 | |
1823 | #ifdef CY_DEBUG_IO | |
21719191 | 1824 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
1da177e4 LT |
1825 | #endif |
1826 | ||
02f1175c | 1827 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
76b25a55 | 1828 | return 0; |
1da177e4 | 1829 | |
77451e53 | 1830 | if (!info->port.xmit_buf) |
76b25a55 | 1831 | return 0; |
1da177e4 | 1832 | |
9fa1b3b1 | 1833 | spin_lock_irqsave(&info->card->card_lock, flags); |
90cc3018 | 1834 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
9fa1b3b1 | 1835 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1836 | return 0; |
02f1175c | 1837 | } |
1da177e4 | 1838 | |
77451e53 | 1839 | info->port.xmit_buf[info->xmit_head++] = ch; |
02f1175c JS |
1840 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
1841 | info->xmit_cnt++; | |
1da177e4 LT |
1842 | info->idle_stats.xmit_bytes++; |
1843 | info->idle_stats.xmit_idle = jiffies; | |
9fa1b3b1 | 1844 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
76b25a55 | 1845 | return 1; |
02f1175c | 1846 | } /* cy_put_char */ |
1da177e4 LT |
1847 | |
1848 | /* | |
1849 | * This routine is called by the kernel after it has written a | |
15ed6cc0 | 1850 | * series of characters to the tty device using put_char(). |
1da177e4 | 1851 | */ |
02f1175c | 1852 | static void cy_flush_chars(struct tty_struct *tty) |
1da177e4 | 1853 | { |
cab9bdd1 | 1854 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 1855 | |
1da177e4 | 1856 | #ifdef CY_DEBUG_IO |
21719191 | 1857 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
1da177e4 LT |
1858 | #endif |
1859 | ||
02f1175c JS |
1860 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
1861 | return; | |
1da177e4 | 1862 | |
02f1175c | 1863 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
77451e53 | 1864 | !info->port.xmit_buf) |
02f1175c | 1865 | return; |
1da177e4 | 1866 | |
02f1175c JS |
1867 | start_xmit(info); |
1868 | } /* cy_flush_chars */ | |
1da177e4 LT |
1869 | |
1870 | /* | |
1871 | * This routine returns the numbers of characters the tty driver | |
1872 | * will accept for queuing to be written. This number is subject | |
1873 | * to change as output buffers get emptied, or if the output flow | |
1874 | * control is activated. | |
1875 | */ | |
02f1175c | 1876 | static int cy_write_room(struct tty_struct *tty) |
1da177e4 | 1877 | { |
cab9bdd1 | 1878 | struct cyclades_port *info = tty->driver_data; |
02f1175c JS |
1879 | int ret; |
1880 | ||
1da177e4 | 1881 | #ifdef CY_DEBUG_IO |
21719191 | 1882 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
1da177e4 LT |
1883 | #endif |
1884 | ||
02f1175c JS |
1885 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
1886 | return 0; | |
1887 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; | |
1888 | if (ret < 0) | |
1889 | ret = 0; | |
1890 | return ret; | |
1891 | } /* cy_write_room */ | |
1da177e4 | 1892 | |
02f1175c | 1893 | static int cy_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 1894 | { |
cab9bdd1 | 1895 | struct cyclades_port *info = tty->driver_data; |
1da177e4 | 1896 | |
02f1175c JS |
1897 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
1898 | return 0; | |
1899 | ||
1da177e4 | 1900 | #ifdef Z_EXT_CHARS_IN_BUFFER |
f0eefdc3 | 1901 | if (!cy_is_Z(info->card)) { |
02f1175c | 1902 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
1da177e4 | 1903 | #ifdef CY_DEBUG_IO |
21719191 JS |
1904 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1905 | info->line, info->xmit_cnt); | |
1da177e4 | 1906 | #endif |
02f1175c | 1907 | return info->xmit_cnt; |
1da177e4 | 1908 | #ifdef Z_EXT_CHARS_IN_BUFFER |
02f1175c | 1909 | } else { |
f0eefdc3 | 1910 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
02f1175c | 1911 | int char_count; |
ad39c300 | 1912 | __u32 tx_put, tx_get, tx_bufsize; |
02f1175c | 1913 | |
db05c3b1 JS |
1914 | tx_get = readl(&buf_ctrl->tx_get); |
1915 | tx_put = readl(&buf_ctrl->tx_put); | |
1916 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); | |
02f1175c JS |
1917 | if (tx_put >= tx_get) |
1918 | char_count = tx_put - tx_get; | |
1919 | else | |
1920 | char_count = tx_put - tx_get + tx_bufsize; | |
1da177e4 | 1921 | #ifdef CY_DEBUG_IO |
21719191 JS |
1922 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
1923 | info->line, info->xmit_cnt + char_count); | |
1da177e4 | 1924 | #endif |
096dcfce | 1925 | return info->xmit_cnt + char_count; |
02f1175c JS |
1926 | } |
1927 | #endif /* Z_EXT_CHARS_IN_BUFFER */ | |
1928 | } /* cy_chars_in_buffer */ | |
1da177e4 LT |
1929 | |
1930 | /* | |
1931 | * ------------------------------------------------------------ | |
1932 | * cy_ioctl() and friends | |
1933 | * ------------------------------------------------------------ | |
1934 | */ | |
1935 | ||
1a86b5e3 | 1936 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
1da177e4 | 1937 | { |
02f1175c | 1938 | int co, co_val, bpr; |
1a86b5e3 | 1939 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
02f1175c | 1940 | 25000000); |
1da177e4 | 1941 | |
02f1175c JS |
1942 | if (baud == 0) { |
1943 | info->tbpr = info->tco = info->rbpr = info->rco = 0; | |
1944 | return; | |
1945 | } | |
1da177e4 | 1946 | |
02f1175c JS |
1947 | /* determine which prescaler to use */ |
1948 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { | |
1949 | if (cy_clock / co_val / baud > 63) | |
1950 | break; | |
1951 | } | |
1da177e4 | 1952 | |
02f1175c JS |
1953 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
1954 | if (bpr > 255) | |
1955 | bpr = 255; | |
1da177e4 | 1956 | |
02f1175c JS |
1957 | info->tbpr = info->rbpr = bpr; |
1958 | info->tco = info->rco = co; | |
1da177e4 LT |
1959 | } |
1960 | ||
1961 | /* | |
1962 | * This routine finds or computes the various line characteristics. | |
1963 | * It used to be called config_setup | |
1964 | */ | |
d13549f8 | 1965 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
1da177e4 | 1966 | { |
875b206b | 1967 | struct cyclades_card *card; |
02f1175c | 1968 | unsigned long flags; |
3aeea5b9 | 1969 | int channel; |
02f1175c | 1970 | unsigned cflag, iflag; |
02f1175c JS |
1971 | int baud, baud_rate = 0; |
1972 | int i; | |
1973 | ||
15ed6cc0 | 1974 | if (info->line == -1) |
02f1175c | 1975 | return; |
15ed6cc0 | 1976 | |
adc8d746 AC |
1977 | cflag = tty->termios.c_cflag; |
1978 | iflag = tty->termios.c_iflag; | |
1da177e4 | 1979 | |
02f1175c JS |
1980 | /* |
1981 | * Set up the tty->alt_speed kludge | |
1982 | */ | |
d13549f8 JS |
1983 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
1984 | tty->alt_speed = 57600; | |
1985 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) | |
1986 | tty->alt_speed = 115200; | |
1987 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) | |
1988 | tty->alt_speed = 230400; | |
1989 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) | |
1990 | tty->alt_speed = 460800; | |
02f1175c JS |
1991 | |
1992 | card = info->card; | |
875b206b | 1993 | channel = info->line - card->first_line; |
02f1175c | 1994 | |
2693f485 | 1995 | if (!cy_is_Z(card)) { |
46fb7825 JS |
1996 | u32 cflags; |
1997 | ||
02f1175c | 1998 | /* baud rate */ |
d13549f8 | 1999 | baud = tty_get_baud_rate(tty); |
77451e53 | 2000 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2001 | ASYNC_SPD_CUST) { |
2002 | if (info->custom_divisor) | |
2003 | baud_rate = info->baud / info->custom_divisor; | |
2004 | else | |
2005 | baud_rate = info->baud; | |
2006 | } else if (baud > CD1400_MAX_SPEED) { | |
2007 | baud = CD1400_MAX_SPEED; | |
2008 | } | |
2009 | /* find the baud index */ | |
2010 | for (i = 0; i < 20; i++) { | |
15ed6cc0 | 2011 | if (baud == baud_table[i]) |
02f1175c | 2012 | break; |
02f1175c | 2013 | } |
15ed6cc0 | 2014 | if (i == 20) |
02f1175c | 2015 | i = 19; /* CD1400_MAX_SPEED */ |
02f1175c | 2016 | |
77451e53 | 2017 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2018 | ASYNC_SPD_CUST) { |
2019 | cyy_baud_calc(info, baud_rate); | |
2020 | } else { | |
2021 | if (info->chip_rev >= CD1400_REV_J) { | |
2022 | /* It is a CD1400 rev. J or later */ | |
2023 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ | |
2024 | info->tco = baud_co_60[i]; /* Tx CO */ | |
2025 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ | |
2026 | info->rco = baud_co_60[i]; /* Rx CO */ | |
2027 | } else { | |
2028 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ | |
2029 | info->tco = baud_co_25[i]; /* Tx CO */ | |
2030 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ | |
2031 | info->rco = baud_co_25[i]; /* Rx CO */ | |
2032 | } | |
2033 | } | |
2034 | if (baud_table[i] == 134) { | |
2035 | /* get it right for 134.5 baud */ | |
2036 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2037 | 2; | |
77451e53 | 2038 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2039 | ASYNC_SPD_CUST) { |
2040 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2041 | baud_rate) + 2; | |
2042 | } else if (baud_table[i]) { | |
2043 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2044 | baud_table[i]) + 2; | |
2045 | /* this needs to be propagated into the card info */ | |
2046 | } else { | |
2047 | info->timeout = 0; | |
2048 | } | |
2049 | /* By tradition (is it a standard?) a baud rate of zero | |
2050 | implies the line should be/has been closed. A bit | |
2051 | later in this routine such a test is performed. */ | |
2052 | ||
2053 | /* byte size and parity */ | |
2054 | info->cor5 = 0; | |
2055 | info->cor4 = 0; | |
2056 | /* receive threshold */ | |
2057 | info->cor3 = (info->default_threshold ? | |
2058 | info->default_threshold : baud_cor3[i]); | |
2059 | info->cor2 = CyETC; | |
2060 | switch (cflag & CSIZE) { | |
2061 | case CS5: | |
2062 | info->cor1 = Cy_5_BITS; | |
2063 | break; | |
2064 | case CS6: | |
2065 | info->cor1 = Cy_6_BITS; | |
2066 | break; | |
2067 | case CS7: | |
2068 | info->cor1 = Cy_7_BITS; | |
2069 | break; | |
2070 | case CS8: | |
2071 | info->cor1 = Cy_8_BITS; | |
2072 | break; | |
2073 | } | |
15ed6cc0 | 2074 | if (cflag & CSTOPB) |
02f1175c | 2075 | info->cor1 |= Cy_2_STOP; |
15ed6cc0 | 2076 | |
02f1175c | 2077 | if (cflag & PARENB) { |
15ed6cc0 | 2078 | if (cflag & PARODD) |
02f1175c | 2079 | info->cor1 |= CyPARITY_O; |
15ed6cc0 | 2080 | else |
02f1175c | 2081 | info->cor1 |= CyPARITY_E; |
15ed6cc0 | 2082 | } else |
02f1175c | 2083 | info->cor1 |= CyPARITY_NONE; |
02f1175c JS |
2084 | |
2085 | /* CTS flow control flag */ | |
2086 | if (cflag & CRTSCTS) { | |
77451e53 | 2087 | info->port.flags |= ASYNC_CTS_FLOW; |
02f1175c JS |
2088 | info->cor2 |= CyCtsAE; |
2089 | } else { | |
77451e53 | 2090 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2091 | info->cor2 &= ~CyCtsAE; |
2092 | } | |
2093 | if (cflag & CLOCAL) | |
77451e53 | 2094 | info->port.flags &= ~ASYNC_CHECK_CD; |
02f1175c | 2095 | else |
77451e53 | 2096 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 LT |
2097 | |
2098 | /*********************************************** | |
2099 | The hardware option, CyRtsAO, presents RTS when | |
2100 | the chip has characters to send. Since most modems | |
2101 | use RTS as reverse (inbound) flow control, this | |
2102 | option is not used. If inbound flow control is | |
2103 | necessary, DTR can be programmed to provide the | |
2104 | appropriate signals for use with a non-standard | |
2105 | cable. Contact Marcio Saito for details. | |
2106 | ***********************************************/ | |
2107 | ||
02f1175c | 2108 | channel &= 0x03; |
1da177e4 | 2109 | |
9fa1b3b1 | 2110 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2111 | cyy_writeb(info, CyCAR, channel); |
02f1175c JS |
2112 | |
2113 | /* tx and rx baud rate */ | |
2114 | ||
3aeea5b9 JS |
2115 | cyy_writeb(info, CyTCOR, info->tco); |
2116 | cyy_writeb(info, CyTBPR, info->tbpr); | |
2117 | cyy_writeb(info, CyRCOR, info->rco); | |
2118 | cyy_writeb(info, CyRBPR, info->rbpr); | |
02f1175c JS |
2119 | |
2120 | /* set line characteristics according configuration */ | |
2121 | ||
3aeea5b9 JS |
2122 | cyy_writeb(info, CySCHR1, START_CHAR(tty)); |
2123 | cyy_writeb(info, CySCHR2, STOP_CHAR(tty)); | |
2124 | cyy_writeb(info, CyCOR1, info->cor1); | |
2125 | cyy_writeb(info, CyCOR2, info->cor2); | |
2126 | cyy_writeb(info, CyCOR3, info->cor3); | |
2127 | cyy_writeb(info, CyCOR4, info->cor4); | |
2128 | cyy_writeb(info, CyCOR5, info->cor5); | |
02f1175c | 2129 | |
3aeea5b9 JS |
2130 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
2131 | CyCOR3ch); | |
02f1175c | 2132 | |
15ed6cc0 | 2133 | /* !!! Is this needed? */ |
3aeea5b9 JS |
2134 | cyy_writeb(info, CyCAR, channel); |
2135 | cyy_writeb(info, CyRTPR, | |
02f1175c JS |
2136 | (info->default_timeout ? info->default_timeout : 0x02)); |
2137 | /* 10ms rx timeout */ | |
2138 | ||
46fb7825 JS |
2139 | cflags = CyCTS; |
2140 | if (!C_CLOCAL(tty)) | |
2141 | cflags |= CyDSR | CyRI | CyDCD; | |
2142 | /* without modem intr */ | |
2143 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh); | |
2144 | /* act on 1->0 modem transitions */ | |
2145 | if ((cflag & CRTSCTS) && info->rflow) | |
2146 | cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]); | |
2147 | else | |
2148 | cyy_writeb(info, CyMCOR1, cflags); | |
2149 | /* act on 0->1 modem transitions */ | |
2150 | cyy_writeb(info, CyMCOR2, cflags); | |
02f1175c | 2151 | |
4d768200 JS |
2152 | if (i == 0) /* baud rate is zero, turn off line */ |
2153 | cyy_change_rts_dtr(info, 0, TIOCM_DTR); | |
2154 | else | |
2155 | cyy_change_rts_dtr(info, TIOCM_DTR, 0); | |
1da177e4 | 2156 | |
d13549f8 | 2157 | clear_bit(TTY_IO_ERROR, &tty->flags); |
9fa1b3b1 | 2158 | spin_unlock_irqrestore(&card->card_lock, flags); |
1da177e4 | 2159 | |
1da177e4 | 2160 | } else { |
f0eefdc3 | 2161 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
1a86b5e3 | 2162 | __u32 sw_flow; |
02f1175c | 2163 | int retval; |
1da177e4 | 2164 | |
2693f485 | 2165 | if (!cyz_is_loaded(card)) |
02f1175c | 2166 | return; |
1da177e4 | 2167 | |
02f1175c | 2168 | /* baud rate */ |
d13549f8 | 2169 | baud = tty_get_baud_rate(tty); |
77451e53 | 2170 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2171 | ASYNC_SPD_CUST) { |
2172 | if (info->custom_divisor) | |
2173 | baud_rate = info->baud / info->custom_divisor; | |
2174 | else | |
2175 | baud_rate = info->baud; | |
2176 | } else if (baud > CYZ_MAX_SPEED) { | |
2177 | baud = CYZ_MAX_SPEED; | |
2178 | } | |
2179 | cy_writel(&ch_ctrl->comm_baud, baud); | |
2180 | ||
2181 | if (baud == 134) { | |
2182 | /* get it right for 134.5 baud */ | |
2183 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + | |
2184 | 2; | |
77451e53 | 2185 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
02f1175c JS |
2186 | ASYNC_SPD_CUST) { |
2187 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2188 | baud_rate) + 2; | |
2189 | } else if (baud) { | |
2190 | info->timeout = (info->xmit_fifo_size * HZ * 15 / | |
2191 | baud) + 2; | |
2192 | /* this needs to be propagated into the card info */ | |
2193 | } else { | |
2194 | info->timeout = 0; | |
2195 | } | |
1da177e4 | 2196 | |
02f1175c JS |
2197 | /* byte size and parity */ |
2198 | switch (cflag & CSIZE) { | |
2199 | case CS5: | |
2200 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); | |
2201 | break; | |
2202 | case CS6: | |
2203 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); | |
2204 | break; | |
2205 | case CS7: | |
2206 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); | |
2207 | break; | |
2208 | case CS8: | |
2209 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); | |
2210 | break; | |
2211 | } | |
2212 | if (cflag & CSTOPB) { | |
2213 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2214 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
02f1175c JS |
2215 | } else { |
2216 | cy_writel(&ch_ctrl->comm_data_l, | |
db05c3b1 | 2217 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
02f1175c JS |
2218 | } |
2219 | if (cflag & PARENB) { | |
15ed6cc0 | 2220 | if (cflag & PARODD) |
02f1175c | 2221 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
15ed6cc0 | 2222 | else |
02f1175c | 2223 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
15ed6cc0 | 2224 | } else |
02f1175c | 2225 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
1da177e4 | 2226 | |
02f1175c JS |
2227 | /* CTS flow control flag */ |
2228 | if (cflag & CRTSCTS) { | |
2229 | cy_writel(&ch_ctrl->hw_flow, | |
db05c3b1 | 2230 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
02f1175c | 2231 | } else { |
db05c3b1 JS |
2232 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
2233 | ~(C_RS_CTS | C_RS_RTS)); | |
02f1175c JS |
2234 | } |
2235 | /* As the HW flow control is done in firmware, the driver | |
2236 | doesn't need to care about it */ | |
77451e53 | 2237 | info->port.flags &= ~ASYNC_CTS_FLOW; |
02f1175c JS |
2238 | |
2239 | /* XON/XOFF/XANY flow control flags */ | |
2240 | sw_flow = 0; | |
2241 | if (iflag & IXON) { | |
2242 | sw_flow |= C_FL_OXX; | |
2243 | if (iflag & IXANY) | |
2244 | sw_flow |= C_FL_OIXANY; | |
2245 | } | |
2246 | cy_writel(&ch_ctrl->sw_flow, sw_flow); | |
2247 | ||
875b206b | 2248 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
02f1175c | 2249 | if (retval != 0) { |
21719191 JS |
2250 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
2251 | "was %x\n", info->line, retval); | |
02f1175c JS |
2252 | } |
2253 | ||
2254 | /* CD sensitivity */ | |
15ed6cc0 | 2255 | if (cflag & CLOCAL) |
77451e53 | 2256 | info->port.flags &= ~ASYNC_CHECK_CD; |
15ed6cc0 | 2257 | else |
77451e53 | 2258 | info->port.flags |= ASYNC_CHECK_CD; |
1da177e4 | 2259 | |
02f1175c JS |
2260 | if (baud == 0) { /* baud rate is zero, turn off line */ |
2261 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2262 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
1da177e4 | 2263 | #ifdef CY_DEBUG_DTR |
21719191 | 2264 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
1da177e4 | 2265 | #endif |
02f1175c JS |
2266 | } else { |
2267 | cy_writel(&ch_ctrl->rs_control, | |
db05c3b1 | 2268 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
1da177e4 | 2269 | #ifdef CY_DEBUG_DTR |
21719191 | 2270 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
1da177e4 | 2271 | #endif |
02f1175c | 2272 | } |
1da177e4 | 2273 | |
15ed6cc0 | 2274 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
02f1175c | 2275 | if (retval != 0) { |
21719191 JS |
2276 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
2277 | "was %x\n", info->line, retval); | |
02f1175c | 2278 | } |
1da177e4 | 2279 | |
d13549f8 | 2280 | clear_bit(TTY_IO_ERROR, &tty->flags); |
1da177e4 | 2281 | } |
02f1175c | 2282 | } /* set_line_char */ |
1da177e4 | 2283 | |
6c28181c | 2284 | static int cy_get_serial_info(struct cyclades_port *info, |
15ed6cc0 | 2285 | struct serial_struct __user *retinfo) |
1da177e4 | 2286 | { |
875b206b | 2287 | struct cyclades_card *cinfo = info->card; |
6c28181c JS |
2288 | struct serial_struct tmp = { |
2289 | .type = info->type, | |
2290 | .line = info->line, | |
2291 | .port = (info->card - cy_card) * 0x100 + info->line - | |
2292 | cinfo->first_line, | |
2293 | .irq = cinfo->irq, | |
2294 | .flags = info->port.flags, | |
2295 | .close_delay = info->port.close_delay, | |
2296 | .closing_wait = info->port.closing_wait, | |
2297 | .baud_base = info->baud, | |
2298 | .custom_divisor = info->custom_divisor, | |
2299 | .hub6 = 0, /*!!! */ | |
2300 | }; | |
02f1175c | 2301 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
6c28181c | 2302 | } |
1da177e4 LT |
2303 | |
2304 | static int | |
d13549f8 | 2305 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
15ed6cc0 | 2306 | struct serial_struct __user *new_info) |
1da177e4 | 2307 | { |
02f1175c | 2308 | struct serial_struct new_serial; |
25c3cdf8 | 2309 | int ret; |
02f1175c JS |
2310 | |
2311 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) | |
2312 | return -EFAULT; | |
02f1175c | 2313 | |
25c3cdf8 | 2314 | mutex_lock(&info->port.mutex); |
02f1175c | 2315 | if (!capable(CAP_SYS_ADMIN)) { |
44b7d1b3 | 2316 | if (new_serial.close_delay != info->port.close_delay || |
02f1175c JS |
2317 | new_serial.baud_base != info->baud || |
2318 | (new_serial.flags & ASYNC_FLAGS & | |
2319 | ~ASYNC_USR_MASK) != | |
77451e53 | 2320 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
25c3cdf8 AC |
2321 | { |
2322 | mutex_unlock(&info->port.mutex); | |
02f1175c | 2323 | return -EPERM; |
25c3cdf8 | 2324 | } |
77451e53 | 2325 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
02f1175c JS |
2326 | (new_serial.flags & ASYNC_USR_MASK); |
2327 | info->baud = new_serial.baud_base; | |
2328 | info->custom_divisor = new_serial.custom_divisor; | |
2329 | goto check_and_exit; | |
2330 | } | |
2331 | ||
2332 | /* | |
2333 | * OK, past this point, all the error checking has been done. | |
2334 | * At this point, we start making changes..... | |
2335 | */ | |
2336 | ||
2337 | info->baud = new_serial.baud_base; | |
2338 | info->custom_divisor = new_serial.custom_divisor; | |
77451e53 | 2339 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
02f1175c | 2340 | (new_serial.flags & ASYNC_FLAGS); |
44b7d1b3 AC |
2341 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
2342 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; | |
1da177e4 LT |
2343 | |
2344 | check_and_exit: | |
77451e53 | 2345 | if (info->port.flags & ASYNC_INITIALIZED) { |
d13549f8 | 2346 | cy_set_line_char(info, tty); |
25c3cdf8 | 2347 | ret = 0; |
02f1175c | 2348 | } else { |
25c3cdf8 | 2349 | ret = cy_startup(info, tty); |
02f1175c | 2350 | } |
25c3cdf8 AC |
2351 | mutex_unlock(&info->port.mutex); |
2352 | return ret; | |
02f1175c | 2353 | } /* set_serial_info */ |
1da177e4 LT |
2354 | |
2355 | /* | |
2356 | * get_lsr_info - get line status register info | |
2357 | * | |
2358 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2359 | * is emptied. On bus types like RS485, the transmitter must | |
2360 | * release the bus after transmitting. This must be done when | |
2361 | * the transmit shift register is empty, not be done when the | |
2362 | * transmit holding register is empty. This functionality | |
2363 | * allows an RS485 driver to be written in user space. | |
2364 | */ | |
15ed6cc0 | 2365 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) |
1da177e4 | 2366 | { |
3aeea5b9 | 2367 | struct cyclades_card *card = info->card; |
02f1175c JS |
2368 | unsigned int result; |
2369 | unsigned long flags; | |
3aeea5b9 | 2370 | u8 status; |
1da177e4 | 2371 | |
2693f485 | 2372 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2373 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2374 | status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty); |
9fa1b3b1 | 2375 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2376 | result = (status ? 0 : TIOCSER_TEMT); |
2377 | } else { | |
2378 | /* Not supported yet */ | |
2379 | return -EINVAL; | |
2380 | } | |
dbca36ea | 2381 | return put_user(result, value); |
1da177e4 LT |
2382 | } |
2383 | ||
60b33c13 | 2384 | static int cy_tiocmget(struct tty_struct *tty) |
1da177e4 | 2385 | { |
cab9bdd1 | 2386 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2387 | struct cyclades_card *card; |
3aeea5b9 | 2388 | int result; |
02f1175c | 2389 | |
bf9d8929 | 2390 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c | 2391 | return -ENODEV; |
1da177e4 | 2392 | |
02f1175c | 2393 | card = info->card; |
0d348729 | 2394 | |
2693f485 | 2395 | if (!cy_is_Z(card)) { |
0d348729 | 2396 | unsigned long flags; |
3aeea5b9 JS |
2397 | int channel = info->line - card->first_line; |
2398 | u8 status; | |
1da177e4 | 2399 | |
9fa1b3b1 | 2400 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2401 | cyy_writeb(info, CyCAR, channel & 0x03); |
2402 | status = cyy_readb(info, CyMSVR1); | |
2403 | status |= cyy_readb(info, CyMSVR2); | |
9fa1b3b1 | 2404 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2405 | |
2406 | if (info->rtsdtr_inv) { | |
2407 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | | |
2408 | ((status & CyDTR) ? TIOCM_RTS : 0); | |
2409 | } else { | |
2410 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | | |
2411 | ((status & CyDTR) ? TIOCM_DTR : 0); | |
2412 | } | |
2413 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | | |
2414 | ((status & CyRI) ? TIOCM_RNG : 0) | | |
2415 | ((status & CyDSR) ? TIOCM_DSR : 0) | | |
2416 | ((status & CyCTS) ? TIOCM_CTS : 0); | |
1da177e4 | 2417 | } else { |
0d348729 JS |
2418 | u32 lstatus; |
2419 | ||
2420 | if (!cyz_is_loaded(card)) { | |
2421 | result = -ENODEV; | |
2422 | goto end; | |
02f1175c | 2423 | } |
1da177e4 | 2424 | |
0d348729 JS |
2425 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
2426 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | | |
2427 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | | |
2428 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | | |
2429 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | | |
2430 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | | |
2431 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); | |
02f1175c | 2432 | } |
0d348729 | 2433 | end: |
02f1175c JS |
2434 | return result; |
2435 | } /* cy_tiomget */ | |
1da177e4 LT |
2436 | |
2437 | static int | |
20b9d177 | 2438 | cy_tiocmset(struct tty_struct *tty, |
02f1175c | 2439 | unsigned int set, unsigned int clear) |
1da177e4 | 2440 | { |
cab9bdd1 | 2441 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2442 | struct cyclades_card *card; |
02f1175c | 2443 | unsigned long flags; |
02f1175c | 2444 | |
bf9d8929 | 2445 | if (serial_paranoia_check(info, tty->name, __func__)) |
02f1175c JS |
2446 | return -ENODEV; |
2447 | ||
2448 | card = info->card; | |
2693f485 | 2449 | if (!cy_is_Z(card)) { |
4d768200 JS |
2450 | spin_lock_irqsave(&card->card_lock, flags); |
2451 | cyy_change_rts_dtr(info, set, clear); | |
2452 | spin_unlock_irqrestore(&card->card_lock, flags); | |
02f1175c | 2453 | } else { |
0d348729 JS |
2454 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
2455 | int retval, channel = info->line - card->first_line; | |
2456 | u32 rs; | |
2457 | ||
2458 | if (!cyz_is_loaded(card)) | |
2459 | return -ENODEV; | |
2460 | ||
2461 | spin_lock_irqsave(&card->card_lock, flags); | |
2462 | rs = readl(&ch_ctrl->rs_control); | |
2463 | if (set & TIOCM_RTS) | |
2464 | rs |= C_RS_RTS; | |
2465 | if (clear & TIOCM_RTS) | |
2466 | rs &= ~C_RS_RTS; | |
2467 | if (set & TIOCM_DTR) { | |
2468 | rs |= C_RS_DTR; | |
1da177e4 | 2469 | #ifdef CY_DEBUG_DTR |
0d348729 | 2470 | printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n"); |
1da177e4 | 2471 | #endif |
0d348729 JS |
2472 | } |
2473 | if (clear & TIOCM_DTR) { | |
2474 | rs &= ~C_RS_DTR; | |
1da177e4 | 2475 | #ifdef CY_DEBUG_DTR |
0d348729 JS |
2476 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
2477 | "Z DTR\n"); | |
1da177e4 | 2478 | #endif |
02f1175c | 2479 | } |
0d348729 | 2480 | cy_writel(&ch_ctrl->rs_control, rs); |
9fa1b3b1 | 2481 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
0d348729 | 2482 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2483 | if (retval != 0) { |
21719191 JS |
2484 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
2485 | "was %x\n", info->line, retval); | |
02f1175c | 2486 | } |
1da177e4 | 2487 | } |
02f1175c | 2488 | return 0; |
0d348729 | 2489 | } |
1da177e4 LT |
2490 | |
2491 | /* | |
2492 | * cy_break() --- routine which turns the break handling on or off | |
2493 | */ | |
9e98966c | 2494 | static int cy_break(struct tty_struct *tty, int break_state) |
1da177e4 | 2495 | { |
cab9bdd1 | 2496 | struct cyclades_port *info = tty->driver_data; |
9fa1b3b1 | 2497 | struct cyclades_card *card; |
02f1175c | 2498 | unsigned long flags; |
9e98966c | 2499 | int retval = 0; |
1da177e4 | 2500 | |
02f1175c | 2501 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
9e98966c | 2502 | return -EINVAL; |
1da177e4 | 2503 | |
9fa1b3b1 JS |
2504 | card = info->card; |
2505 | ||
2506 | spin_lock_irqsave(&card->card_lock, flags); | |
2693f485 | 2507 | if (!cy_is_Z(card)) { |
02f1175c JS |
2508 | /* Let the transmit ISR take care of this (since it |
2509 | requires stuffing characters into the output stream). | |
2510 | */ | |
2511 | if (break_state == -1) { | |
2512 | if (!info->breakon) { | |
2513 | info->breakon = 1; | |
2514 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2515 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2516 | start_xmit(info); |
9fa1b3b1 | 2517 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2518 | } |
2519 | } | |
2520 | } else { | |
2521 | if (!info->breakoff) { | |
2522 | info->breakoff = 1; | |
2523 | if (!info->xmit_cnt) { | |
9fa1b3b1 | 2524 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c | 2525 | start_xmit(info); |
9fa1b3b1 | 2526 | spin_lock_irqsave(&card->card_lock, flags); |
02f1175c JS |
2527 | } |
2528 | } | |
1da177e4 | 2529 | } |
1da177e4 | 2530 | } else { |
02f1175c | 2531 | if (break_state == -1) { |
9fa1b3b1 JS |
2532 | retval = cyz_issue_cmd(card, |
2533 | info->line - card->first_line, | |
02f1175c JS |
2534 | C_CM_SET_BREAK, 0L); |
2535 | if (retval != 0) { | |
21719191 JS |
2536 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
2537 | "ttyC%d was %x\n", info->line, retval); | |
02f1175c JS |
2538 | } |
2539 | } else { | |
9fa1b3b1 JS |
2540 | retval = cyz_issue_cmd(card, |
2541 | info->line - card->first_line, | |
02f1175c JS |
2542 | C_CM_CLR_BREAK, 0L); |
2543 | if (retval != 0) { | |
21719191 JS |
2544 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
2545 | "on ttyC%d was %x\n", info->line, | |
2546 | retval); | |
02f1175c | 2547 | } |
1da177e4 | 2548 | } |
1da177e4 | 2549 | } |
9fa1b3b1 | 2550 | spin_unlock_irqrestore(&card->card_lock, flags); |
9e98966c | 2551 | return retval; |
02f1175c | 2552 | } /* cy_break */ |
1da177e4 | 2553 | |
02f1175c | 2554 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2555 | { |
3aeea5b9 | 2556 | struct cyclades_card *card = info->card; |
02f1175c | 2557 | unsigned long flags; |
1da177e4 | 2558 | |
2693f485 | 2559 | if (!cy_is_Z(card)) { |
02f1175c JS |
2560 | info->cor3 &= ~CyREC_FIFO; |
2561 | info->cor3 |= value & CyREC_FIFO; | |
1da177e4 | 2562 | |
9fa1b3b1 | 2563 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 JS |
2564 | cyy_writeb(info, CyCOR3, info->cor3); |
2565 | cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch); | |
9fa1b3b1 | 2566 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2567 | } |
2568 | return 0; | |
2569 | } /* set_threshold */ | |
1da177e4 | 2570 | |
15ed6cc0 AC |
2571 | static int get_threshold(struct cyclades_port *info, |
2572 | unsigned long __user *value) | |
1da177e4 | 2573 | { |
3aeea5b9 | 2574 | struct cyclades_card *card = info->card; |
1da177e4 | 2575 | |
2693f485 | 2576 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2577 | u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO; |
02f1175c | 2578 | return put_user(tmp, value); |
02f1175c | 2579 | } |
f7429034 | 2580 | return 0; |
02f1175c | 2581 | } /* get_threshold */ |
1da177e4 | 2582 | |
02f1175c | 2583 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
1da177e4 | 2584 | { |
3aeea5b9 | 2585 | struct cyclades_card *card = info->card; |
02f1175c | 2586 | unsigned long flags; |
1da177e4 | 2587 | |
2693f485 | 2588 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2589 | spin_lock_irqsave(&card->card_lock, flags); |
3aeea5b9 | 2590 | cyy_writeb(info, CyRTPR, value & 0xff); |
9fa1b3b1 | 2591 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2592 | } |
2593 | return 0; | |
2594 | } /* set_timeout */ | |
1da177e4 | 2595 | |
15ed6cc0 AC |
2596 | static int get_timeout(struct cyclades_port *info, |
2597 | unsigned long __user *value) | |
1da177e4 | 2598 | { |
3aeea5b9 | 2599 | struct cyclades_card *card = info->card; |
1da177e4 | 2600 | |
2693f485 | 2601 | if (!cy_is_Z(card)) { |
3aeea5b9 | 2602 | u8 tmp = cyy_readb(info, CyRTPR); |
02f1175c | 2603 | return put_user(tmp, value); |
02f1175c | 2604 | } |
f7429034 | 2605 | return 0; |
02f1175c | 2606 | } /* get_timeout */ |
1da177e4 | 2607 | |
6c28181c JS |
2608 | static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg, |
2609 | struct cyclades_icount *cprev) | |
1da177e4 | 2610 | { |
6c28181c JS |
2611 | struct cyclades_icount cnow; |
2612 | unsigned long flags; | |
2613 | int ret; | |
1da177e4 | 2614 | |
6c28181c JS |
2615 | spin_lock_irqsave(&info->card->card_lock, flags); |
2616 | cnow = info->icount; /* atomic copy */ | |
2617 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2618 | ||
2619 | ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) || | |
2620 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) || | |
2621 | ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) || | |
2622 | ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts)); | |
2623 | ||
2624 | *cprev = cnow; | |
2625 | ||
2626 | return ret; | |
2627 | } | |
1da177e4 LT |
2628 | |
2629 | /* | |
2630 | * This routine allows the tty driver to implement device- | |
2631 | * specific ioctl's. If the ioctl number passed in cmd is | |
2632 | * not recognized by the driver, it should return ENOIOCTLCMD. | |
2633 | */ | |
2634 | static int | |
6caa76b7 | 2635 | cy_ioctl(struct tty_struct *tty, |
02f1175c | 2636 | unsigned int cmd, unsigned long arg) |
1da177e4 | 2637 | { |
cab9bdd1 | 2638 | struct cyclades_port *info = tty->driver_data; |
6c28181c | 2639 | struct cyclades_icount cnow; /* kernel counter temps */ |
02f1175c JS |
2640 | int ret_val = 0; |
2641 | unsigned long flags; | |
2642 | void __user *argp = (void __user *)arg; | |
2643 | ||
2644 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) | |
2645 | return -ENODEV; | |
1da177e4 LT |
2646 | |
2647 | #ifdef CY_DEBUG_OTHER | |
21719191 JS |
2648 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
2649 | info->line, cmd, arg); | |
1da177e4 LT |
2650 | #endif |
2651 | ||
02f1175c JS |
2652 | switch (cmd) { |
2653 | case CYGETMON: | |
6c28181c JS |
2654 | if (copy_to_user(argp, &info->mon, sizeof(info->mon))) { |
2655 | ret_val = -EFAULT; | |
2656 | break; | |
2657 | } | |
2658 | memset(&info->mon, 0, sizeof(info->mon)); | |
02f1175c JS |
2659 | break; |
2660 | case CYGETTHRESH: | |
2661 | ret_val = get_threshold(info, argp); | |
2662 | break; | |
2663 | case CYSETTHRESH: | |
2664 | ret_val = set_threshold(info, arg); | |
2665 | break; | |
2666 | case CYGETDEFTHRESH: | |
6c28181c JS |
2667 | ret_val = put_user(info->default_threshold, |
2668 | (unsigned long __user *)argp); | |
02f1175c JS |
2669 | break; |
2670 | case CYSETDEFTHRESH: | |
6c28181c | 2671 | info->default_threshold = arg & 0x0f; |
02f1175c JS |
2672 | break; |
2673 | case CYGETTIMEOUT: | |
2674 | ret_val = get_timeout(info, argp); | |
2675 | break; | |
2676 | case CYSETTIMEOUT: | |
2677 | ret_val = set_timeout(info, arg); | |
2678 | break; | |
2679 | case CYGETDEFTIMEOUT: | |
6c28181c JS |
2680 | ret_val = put_user(info->default_timeout, |
2681 | (unsigned long __user *)argp); | |
02f1175c JS |
2682 | break; |
2683 | case CYSETDEFTIMEOUT: | |
6c28181c | 2684 | info->default_timeout = arg & 0xff; |
02f1175c | 2685 | break; |
1da177e4 | 2686 | case CYSETRFLOW: |
02f1175c | 2687 | info->rflow = (int)arg; |
02f1175c | 2688 | break; |
1da177e4 | 2689 | case CYGETRFLOW: |
02f1175c JS |
2690 | ret_val = info->rflow; |
2691 | break; | |
1da177e4 | 2692 | case CYSETRTSDTR_INV: |
02f1175c | 2693 | info->rtsdtr_inv = (int)arg; |
02f1175c | 2694 | break; |
1da177e4 | 2695 | case CYGETRTSDTR_INV: |
02f1175c JS |
2696 | ret_val = info->rtsdtr_inv; |
2697 | break; | |
1da177e4 | 2698 | case CYGETCD1400VER: |
02f1175c JS |
2699 | ret_val = info->chip_rev; |
2700 | break; | |
1da177e4 LT |
2701 | #ifndef CONFIG_CYZ_INTR |
2702 | case CYZSETPOLLCYCLE: | |
351d6204 QX |
2703 | if (arg > LONG_MAX / HZ) |
2704 | return -ENODEV; | |
02f1175c | 2705 | cyz_polling_cycle = (arg * HZ) / 1000; |
02f1175c | 2706 | break; |
1da177e4 | 2707 | case CYZGETPOLLCYCLE: |
02f1175c JS |
2708 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
2709 | break; | |
2710 | #endif /* CONFIG_CYZ_INTR */ | |
1da177e4 | 2711 | case CYSETWAIT: |
44b7d1b3 | 2712 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
02f1175c | 2713 | break; |
1da177e4 | 2714 | case CYGETWAIT: |
44b7d1b3 | 2715 | ret_val = info->port.closing_wait / (HZ / 100); |
02f1175c JS |
2716 | break; |
2717 | case TIOCGSERIAL: | |
6c28181c | 2718 | ret_val = cy_get_serial_info(info, argp); |
02f1175c JS |
2719 | break; |
2720 | case TIOCSSERIAL: | |
d13549f8 | 2721 | ret_val = cy_set_serial_info(info, tty, argp); |
02f1175c JS |
2722 | break; |
2723 | case TIOCSERGETLSR: /* Get line status register */ | |
2724 | ret_val = get_lsr_info(info, argp); | |
2725 | break; | |
2726 | /* | |
2727 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change | |
2728 | * - mask passed in arg for lines of interest | |
2729 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) | |
2730 | * Caller should use TIOCGICOUNT to see which one it was | |
2731 | */ | |
1da177e4 | 2732 | case TIOCMIWAIT: |
9fa1b3b1 | 2733 | spin_lock_irqsave(&info->card->card_lock, flags); |
02f1175c | 2734 | /* note the counters on entry */ |
2c7fea99 | 2735 | cnow = info->icount; |
9fa1b3b1 | 2736 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
bdc04e31 | 2737 | ret_val = wait_event_interruptible(info->port.delta_msr_wait, |
6c28181c | 2738 | cy_cflags_changed(info, arg, &cnow)); |
2c7fea99 | 2739 | break; |
1da177e4 | 2740 | |
02f1175c JS |
2741 | /* |
2742 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) | |
2743 | * Return: write counters to the user passed counter struct | |
2744 | * NB: both 1->0 and 0->1 transitions are counted except for | |
2745 | * RI where only 0->1 is counted. | |
2746 | */ | |
02f1175c JS |
2747 | default: |
2748 | ret_val = -ENOIOCTLCMD; | |
2749 | } | |
1da177e4 LT |
2750 | |
2751 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2752 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
1da177e4 | 2753 | #endif |
02f1175c JS |
2754 | return ret_val; |
2755 | } /* cy_ioctl */ | |
1da177e4 | 2756 | |
0587102c AC |
2757 | static int cy_get_icount(struct tty_struct *tty, |
2758 | struct serial_icounter_struct *sic) | |
2759 | { | |
2760 | struct cyclades_port *info = tty->driver_data; | |
2761 | struct cyclades_icount cnow; /* Used to snapshot */ | |
2762 | unsigned long flags; | |
2763 | ||
2764 | spin_lock_irqsave(&info->card->card_lock, flags); | |
2765 | cnow = info->icount; | |
2766 | spin_unlock_irqrestore(&info->card->card_lock, flags); | |
2767 | ||
2768 | sic->cts = cnow.cts; | |
2769 | sic->dsr = cnow.dsr; | |
2770 | sic->rng = cnow.rng; | |
2771 | sic->dcd = cnow.dcd; | |
2772 | sic->rx = cnow.rx; | |
2773 | sic->tx = cnow.tx; | |
2774 | sic->frame = cnow.frame; | |
2775 | sic->overrun = cnow.overrun; | |
2776 | sic->parity = cnow.parity; | |
2777 | sic->brk = cnow.brk; | |
2778 | sic->buf_overrun = cnow.buf_overrun; | |
2779 | return 0; | |
2780 | } | |
2781 | ||
1da177e4 LT |
2782 | /* |
2783 | * This routine allows the tty driver to be notified when | |
2784 | * device's termios settings have changed. Note that a | |
2785 | * well-designed tty driver should be prepared to accept the case | |
2786 | * where old == NULL, and try to do something rational. | |
2787 | */ | |
02f1175c | 2788 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
1da177e4 | 2789 | { |
cab9bdd1 | 2790 | struct cyclades_port *info = tty->driver_data; |
1da177e4 LT |
2791 | |
2792 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2793 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
1da177e4 LT |
2794 | #endif |
2795 | ||
d13549f8 | 2796 | cy_set_line_char(info, tty); |
02f1175c JS |
2797 | |
2798 | if ((old_termios->c_cflag & CRTSCTS) && | |
adc8d746 | 2799 | !(tty->termios.c_cflag & CRTSCTS)) { |
02f1175c JS |
2800 | tty->hw_stopped = 0; |
2801 | cy_start(tty); | |
2802 | } | |
1da177e4 | 2803 | #if 0 |
02f1175c JS |
2804 | /* |
2805 | * No need to wake up processes in open wait, since they | |
2806 | * sample the CLOCAL flag once, and don't recheck it. | |
2807 | * XXX It's not clear whether the current behavior is correct | |
2808 | * or not. Hence, this may change..... | |
2809 | */ | |
2810 | if (!(old_termios->c_cflag & CLOCAL) && | |
adc8d746 | 2811 | (tty->termios.c_cflag & CLOCAL)) |
77451e53 | 2812 | wake_up_interruptible(&info->port.open_wait); |
1da177e4 | 2813 | #endif |
02f1175c | 2814 | } /* cy_set_termios */ |
1da177e4 LT |
2815 | |
2816 | /* This function is used to send a high-priority XON/XOFF character to | |
2817 | the device. | |
2818 | */ | |
02f1175c | 2819 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
1da177e4 | 2820 | { |
cab9bdd1 | 2821 | struct cyclades_port *info = tty->driver_data; |
875b206b JS |
2822 | struct cyclades_card *card; |
2823 | int channel; | |
1da177e4 | 2824 | |
02f1175c | 2825 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
1da177e4 LT |
2826 | return; |
2827 | ||
02f1175c | 2828 | info->x_char = ch; |
1da177e4 LT |
2829 | |
2830 | if (ch) | |
02f1175c | 2831 | cy_start(tty); |
1da177e4 LT |
2832 | |
2833 | card = info->card; | |
875b206b | 2834 | channel = info->line - card->first_line; |
1da177e4 | 2835 | |
2693f485 | 2836 | if (cy_is_Z(card)) { |
02f1175c | 2837 | if (ch == STOP_CHAR(tty)) |
875b206b | 2838 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
02f1175c | 2839 | else if (ch == START_CHAR(tty)) |
875b206b | 2840 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
1da177e4 LT |
2841 | } |
2842 | } | |
2843 | ||
2844 | /* This routine is called by the upper-layer tty layer to signal | |
2845 | that incoming characters should be throttled because the input | |
2846 | buffers are close to full. | |
2847 | */ | |
02f1175c | 2848 | static void cy_throttle(struct tty_struct *tty) |
1da177e4 | 2849 | { |
cab9bdd1 | 2850 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2851 | struct cyclades_card *card; |
02f1175c | 2852 | unsigned long flags; |
1da177e4 LT |
2853 | |
2854 | #ifdef CY_DEBUG_THROTTLE | |
429b4749 | 2855 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty), |
02f1175c | 2856 | tty->ldisc.chars_in_buffer(tty), info->line); |
1da177e4 LT |
2857 | #endif |
2858 | ||
15ed6cc0 | 2859 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
02f1175c | 2860 | return; |
02f1175c JS |
2861 | |
2862 | card = info->card; | |
2863 | ||
2864 | if (I_IXOFF(tty)) { | |
2693f485 | 2865 | if (!cy_is_Z(card)) |
02f1175c JS |
2866 | cy_send_xchar(tty, STOP_CHAR(tty)); |
2867 | else | |
2868 | info->throttle = 1; | |
2869 | } | |
1da177e4 | 2870 | |
adc8d746 | 2871 | if (tty->termios.c_cflag & CRTSCTS) { |
2693f485 | 2872 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2873 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2874 | cyy_change_rts_dtr(info, 0, TIOCM_RTS); |
9fa1b3b1 | 2875 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2876 | } else { |
2877 | info->throttle = 1; | |
2878 | } | |
2879 | } | |
02f1175c | 2880 | } /* cy_throttle */ |
1da177e4 LT |
2881 | |
2882 | /* | |
2883 | * This routine notifies the tty driver that it should signal | |
2884 | * that characters can now be sent to the tty without fear of | |
2885 | * overrunning the input buffers of the line disciplines. | |
2886 | */ | |
02f1175c | 2887 | static void cy_unthrottle(struct tty_struct *tty) |
1da177e4 | 2888 | { |
cab9bdd1 | 2889 | struct cyclades_port *info = tty->driver_data; |
875b206b | 2890 | struct cyclades_card *card; |
02f1175c | 2891 | unsigned long flags; |
1da177e4 LT |
2892 | |
2893 | #ifdef CY_DEBUG_THROTTLE | |
21719191 | 2894 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
429b4749 | 2895 | tty_name(tty), tty_chars_in_buffer(tty), info->line); |
1da177e4 LT |
2896 | #endif |
2897 | ||
15ed6cc0 | 2898 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
02f1175c | 2899 | return; |
1da177e4 | 2900 | |
02f1175c JS |
2901 | if (I_IXOFF(tty)) { |
2902 | if (info->x_char) | |
2903 | info->x_char = 0; | |
2904 | else | |
2905 | cy_send_xchar(tty, START_CHAR(tty)); | |
1da177e4 | 2906 | } |
1da177e4 | 2907 | |
adc8d746 | 2908 | if (tty->termios.c_cflag & CRTSCTS) { |
02f1175c | 2909 | card = info->card; |
2693f485 | 2910 | if (!cy_is_Z(card)) { |
9fa1b3b1 | 2911 | spin_lock_irqsave(&card->card_lock, flags); |
4d768200 | 2912 | cyy_change_rts_dtr(info, TIOCM_RTS, 0); |
9fa1b3b1 | 2913 | spin_unlock_irqrestore(&card->card_lock, flags); |
02f1175c JS |
2914 | } else { |
2915 | info->throttle = 0; | |
2916 | } | |
2917 | } | |
02f1175c | 2918 | } /* cy_unthrottle */ |
1da177e4 LT |
2919 | |
2920 | /* cy_start and cy_stop provide software output flow control as a | |
2921 | function of XON/XOFF, software CTS, and other such stuff. | |
2922 | */ | |
02f1175c | 2923 | static void cy_stop(struct tty_struct *tty) |
1da177e4 | 2924 | { |
02f1175c | 2925 | struct cyclades_card *cinfo; |
cab9bdd1 | 2926 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2927 | int channel; |
02f1175c | 2928 | unsigned long flags; |
1da177e4 LT |
2929 | |
2930 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2931 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
1da177e4 LT |
2932 | #endif |
2933 | ||
02f1175c JS |
2934 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
2935 | return; | |
1da177e4 | 2936 | |
875b206b | 2937 | cinfo = info->card; |
02f1175c | 2938 | channel = info->line - cinfo->first_line; |
2693f485 | 2939 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2940 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2941 | cyy_writeb(info, CyCAR, channel & 0x03); |
2942 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy); | |
9fa1b3b1 | 2943 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2944 | } |
02f1175c | 2945 | } /* cy_stop */ |
1da177e4 | 2946 | |
02f1175c | 2947 | static void cy_start(struct tty_struct *tty) |
1da177e4 | 2948 | { |
02f1175c | 2949 | struct cyclades_card *cinfo; |
cab9bdd1 | 2950 | struct cyclades_port *info = tty->driver_data; |
3aeea5b9 | 2951 | int channel; |
02f1175c | 2952 | unsigned long flags; |
1da177e4 LT |
2953 | |
2954 | #ifdef CY_DEBUG_OTHER | |
21719191 | 2955 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
1da177e4 LT |
2956 | #endif |
2957 | ||
02f1175c JS |
2958 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
2959 | return; | |
1da177e4 | 2960 | |
875b206b | 2961 | cinfo = info->card; |
02f1175c | 2962 | channel = info->line - cinfo->first_line; |
2693f485 | 2963 | if (!cy_is_Z(cinfo)) { |
9fa1b3b1 | 2964 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
2965 | cyy_writeb(info, CyCAR, channel & 0x03); |
2966 | cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy); | |
9fa1b3b1 | 2967 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
02f1175c | 2968 | } |
02f1175c | 2969 | } /* cy_start */ |
1da177e4 | 2970 | |
1da177e4 LT |
2971 | /* |
2972 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. | |
2973 | */ | |
02f1175c | 2974 | static void cy_hangup(struct tty_struct *tty) |
1da177e4 | 2975 | { |
cab9bdd1 | 2976 | struct cyclades_port *info = tty->driver_data; |
02f1175c | 2977 | |
1da177e4 | 2978 | #ifdef CY_DEBUG_OTHER |
21719191 | 2979 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
1da177e4 LT |
2980 | #endif |
2981 | ||
02f1175c JS |
2982 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
2983 | return; | |
1da177e4 | 2984 | |
02f1175c | 2985 | cy_flush_buffer(tty); |
d13549f8 | 2986 | cy_shutdown(info, tty); |
174e6fe0 | 2987 | tty_port_hangup(&info->port); |
02f1175c | 2988 | } /* cy_hangup */ |
1da177e4 | 2989 | |
f0737579 JS |
2990 | static int cyy_carrier_raised(struct tty_port *port) |
2991 | { | |
2992 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
2993 | port); | |
2994 | struct cyclades_card *cinfo = info->card; | |
f0737579 JS |
2995 | unsigned long flags; |
2996 | int channel = info->line - cinfo->first_line; | |
f0737579 JS |
2997 | u32 cd; |
2998 | ||
f0737579 | 2999 | spin_lock_irqsave(&cinfo->card_lock, flags); |
3aeea5b9 JS |
3000 | cyy_writeb(info, CyCAR, channel & 0x03); |
3001 | cd = cyy_readb(info, CyMSVR1) & CyDCD; | |
f0737579 JS |
3002 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3003 | ||
3004 | return cd; | |
3005 | } | |
3006 | ||
3007 | static void cyy_dtr_rts(struct tty_port *port, int raise) | |
3008 | { | |
3009 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3010 | port); | |
3011 | struct cyclades_card *cinfo = info->card; | |
f0737579 | 3012 | unsigned long flags; |
f0737579 JS |
3013 | |
3014 | spin_lock_irqsave(&cinfo->card_lock, flags); | |
4d768200 JS |
3015 | cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0, |
3016 | raise ? 0 : TIOCM_RTS | TIOCM_DTR); | |
f0737579 JS |
3017 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
3018 | } | |
3019 | ||
3020 | static int cyz_carrier_raised(struct tty_port *port) | |
3021 | { | |
3022 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3023 | port); | |
f0737579 | 3024 | |
f0eefdc3 | 3025 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
f0737579 JS |
3026 | } |
3027 | ||
3028 | static void cyz_dtr_rts(struct tty_port *port, int raise) | |
3029 | { | |
3030 | struct cyclades_port *info = container_of(port, struct cyclades_port, | |
3031 | port); | |
3032 | struct cyclades_card *cinfo = info->card; | |
f0eefdc3 | 3033 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
f0737579 JS |
3034 | int ret, channel = info->line - cinfo->first_line; |
3035 | u32 rs; | |
3036 | ||
f0eefdc3 | 3037 | rs = readl(&ch_ctrl->rs_control); |
f0737579 JS |
3038 | if (raise) |
3039 | rs |= C_RS_RTS | C_RS_DTR; | |
3040 | else | |
3041 | rs &= ~(C_RS_RTS | C_RS_DTR); | |
f0eefdc3 | 3042 | cy_writel(&ch_ctrl->rs_control, rs); |
f0737579 JS |
3043 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
3044 | if (ret != 0) | |
3045 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", | |
3046 | __func__, info->line, ret); | |
3047 | #ifdef CY_DEBUG_DTR | |
3048 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); | |
3049 | #endif | |
3050 | } | |
3051 | ||
3052 | static const struct tty_port_operations cyy_port_ops = { | |
3053 | .carrier_raised = cyy_carrier_raised, | |
3054 | .dtr_rts = cyy_dtr_rts, | |
e936ffd5 | 3055 | .shutdown = cy_do_close, |
f0737579 JS |
3056 | }; |
3057 | ||
3058 | static const struct tty_port_operations cyz_port_ops = { | |
3059 | .carrier_raised = cyz_carrier_raised, | |
3060 | .dtr_rts = cyz_dtr_rts, | |
e936ffd5 | 3061 | .shutdown = cy_do_close, |
f0737579 JS |
3062 | }; |
3063 | ||
1da177e4 LT |
3064 | /* |
3065 | * --------------------------------------------------------------------- | |
3066 | * cy_init() and friends | |
3067 | * | |
3068 | * cy_init() is called at boot-time to initialize the serial driver. | |
3069 | * --------------------------------------------------------------------- | |
3070 | */ | |
3071 | ||
9671f099 | 3072 | static int cy_init_card(struct cyclades_card *cinfo) |
0809e267 JS |
3073 | { |
3074 | struct cyclades_port *info; | |
f0eefdc3 | 3075 | unsigned int channel, port; |
0809e267 | 3076 | |
3046d50e | 3077 | spin_lock_init(&cinfo->card_lock); |
963118ee | 3078 | cinfo->intr_enabled = 0; |
3046d50e | 3079 | |
963118ee JS |
3080 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
3081 | GFP_KERNEL); | |
dd025c0c JS |
3082 | if (cinfo->ports == NULL) { |
3083 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); | |
3084 | return -ENOMEM; | |
3085 | } | |
3086 | ||
f0eefdc3 JS |
3087 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
3088 | channel++, port++) { | |
3089 | info = &cinfo->ports[channel]; | |
44b7d1b3 | 3090 | tty_port_init(&info->port); |
3046d50e | 3091 | info->magic = CYCLADES_MAGIC; |
875b206b | 3092 | info->card = cinfo; |
3046d50e | 3093 | info->line = port; |
3046d50e | 3094 | |
44b7d1b3 AC |
3095 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
3096 | info->port.close_delay = 5 * HZ / 10; | |
77451e53 | 3097 | info->port.flags = STD_COM_FLAGS; |
2c7fea99 | 3098 | init_completion(&info->shutdown_wait); |
3046d50e | 3099 | |
2693f485 | 3100 | if (cy_is_Z(cinfo)) { |
f0eefdc3 JS |
3101 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
3102 | struct ZFW_CTRL *zfw_ctrl; | |
3103 | ||
f0737579 | 3104 | info->port.ops = &cyz_port_ops; |
0809e267 | 3105 | info->type = PORT_STARTECH; |
f0eefdc3 JS |
3106 | |
3107 | zfw_ctrl = cinfo->base_addr + | |
3108 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3109 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; | |
3110 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; | |
3111 | ||
101b8159 | 3112 | if (cinfo->hw_ver == ZO_V1) |
0809e267 JS |
3113 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
3114 | else | |
3046d50e | 3115 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
0809e267 | 3116 | #ifdef CONFIG_CYZ_INTR |
3991428d JS |
3117 | setup_timer(&cyz_rx_full_timer[port], |
3118 | cyz_rx_restart, (unsigned long)info); | |
0809e267 | 3119 | #endif |
3046d50e | 3120 | } else { |
f0eefdc3 | 3121 | unsigned short chip_number; |
963118ee | 3122 | int index = cinfo->bus_index; |
f0eefdc3 | 3123 | |
f0737579 | 3124 | info->port.ops = &cyy_port_ops; |
0809e267 | 3125 | info->type = PORT_CIRRUS; |
0809e267 | 3126 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
3046d50e | 3127 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
0809e267 JS |
3128 | info->cor2 = CyETC; |
3129 | info->cor3 = 0x08; /* _very_ small rcv threshold */ | |
3046d50e | 3130 | |
f0eefdc3 | 3131 | chip_number = channel / CyPORTS_PER_CHIP; |
3aeea5b9 JS |
3132 | info->u.cyy.base_addr = cinfo->base_addr + |
3133 | (cy_chip_offset[chip_number] << index); | |
3134 | info->chip_rev = cyy_readb(info, CyGFRCR); | |
15ed6cc0 AC |
3135 | |
3136 | if (info->chip_rev >= CD1400_REV_J) { | |
0809e267 JS |
3137 | /* It is a CD1400 rev. J or later */ |
3138 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ | |
3139 | info->tco = baud_co_60[13]; /* Tx CO */ | |
3140 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ | |
3141 | info->rco = baud_co_60[13]; /* Rx CO */ | |
0809e267 JS |
3142 | info->rtsdtr_inv = 1; |
3143 | } else { | |
3144 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ | |
3145 | info->tco = baud_co_25[13]; /* Tx CO */ | |
3146 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ | |
3147 | info->rco = baud_co_25[13]; /* Rx CO */ | |
0809e267 JS |
3148 | info->rtsdtr_inv = 0; |
3149 | } | |
3046d50e JS |
3150 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
3151 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; | |
0809e267 | 3152 | } |
3046d50e | 3153 | |
0809e267 | 3154 | } |
3046d50e JS |
3155 | |
3156 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3157 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
3046d50e JS |
3158 | mod_timer(&cyz_timerlist, jiffies + 1); |
3159 | #ifdef CY_PCI_DEBUG | |
3160 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); | |
3161 | #endif | |
3162 | } | |
3163 | #endif | |
dd025c0c | 3164 | return 0; |
0809e267 JS |
3165 | } |
3166 | ||
1da177e4 LT |
3167 | /* initialize chips on Cyclom-Y card -- return number of valid |
3168 | chips (which is number of ports/4) */ | |
9671f099 | 3169 | static unsigned short cyy_init_card(void __iomem *true_base_addr, |
31b4f0a1 | 3170 | int index) |
1da177e4 | 3171 | { |
02f1175c JS |
3172 | unsigned int chip_number; |
3173 | void __iomem *base_addr; | |
3174 | ||
3175 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); | |
3176 | /* Cy_HwReset is 0x1400 */ | |
3177 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); | |
3178 | /* Cy_ClrIntr is 0x1800 */ | |
3179 | udelay(500L); | |
3180 | ||
15ed6cc0 AC |
3181 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
3182 | chip_number++) { | |
02f1175c JS |
3183 | base_addr = |
3184 | true_base_addr + (cy_chip_offset[chip_number] << index); | |
3185 | mdelay(1); | |
db05c3b1 | 3186 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
02f1175c JS |
3187 | /************* |
3188 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", | |
3189 | chip_number, (unsigned long)base_addr); | |
3190 | *************/ | |
3191 | return chip_number; | |
3192 | } | |
3193 | ||
3194 | cy_writeb(base_addr + (CyGFRCR << index), 0); | |
3195 | udelay(10L); | |
3196 | ||
3197 | /* The Cyclom-16Y does not decode address bit 9 and therefore | |
3198 | cannot distinguish between references to chip 0 and a non- | |
3199 | existent chip 4. If the preceding clearing of the supposed | |
3200 | chip 4 GFRCR register appears at chip 0, there is no chip 4 | |
3201 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. | |
3202 | */ | |
db05c3b1 | 3203 | if (chip_number == 4 && readb(true_base_addr + |
02f1175c JS |
3204 | (cy_chip_offset[0] << index) + |
3205 | (CyGFRCR << index)) == 0) { | |
3206 | return chip_number; | |
3207 | } | |
3208 | ||
3209 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); | |
3210 | mdelay(1); | |
3211 | ||
db05c3b1 | 3212 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
02f1175c JS |
3213 | /* |
3214 | printk(" chip #%d at %#6lx is not responding ", | |
3215 | chip_number, (unsigned long)base_addr); | |
3216 | printk("(GFRCR stayed 0)\n", | |
3217 | */ | |
3218 | return chip_number; | |
3219 | } | |
db05c3b1 | 3220 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
02f1175c JS |
3221 | 0x40) { |
3222 | /* | |
3223 | printk(" chip #%d at %#6lx is not valid (GFRCR == " | |
3224 | "%#2x)\n", | |
3225 | chip_number, (unsigned long)base_addr, | |
3226 | base_addr[CyGFRCR<<index]); | |
3227 | */ | |
3228 | return chip_number; | |
3229 | } | |
3230 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); | |
db05c3b1 | 3231 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
02f1175c JS |
3232 | /* It is a CD1400 rev. J or later */ |
3233 | /* Impossible to reach 5ms with this chip. | |
3234 | Changed to 2ms instead (f = 500 Hz). */ | |
3235 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); | |
3236 | } else { | |
3237 | /* f = 200 Hz */ | |
3238 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); | |
3239 | } | |
1da177e4 | 3240 | |
02f1175c JS |
3241 | /* |
3242 | printk(" chip #%d at %#6lx is rev 0x%2x\n", | |
3243 | chip_number, (unsigned long)base_addr, | |
db05c3b1 | 3244 | readb(base_addr+(CyGFRCR<<index))); |
02f1175c JS |
3245 | */ |
3246 | } | |
3247 | return chip_number; | |
3248 | } /* cyy_init_card */ | |
1da177e4 LT |
3249 | |
3250 | /* | |
3251 | * --------------------------------------------------------------------- | |
3252 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. | |
3253 | * sets global variables and return the number of ISA boards found. | |
3254 | * --------------------------------------------------------------------- | |
3255 | */ | |
02f1175c | 3256 | static int __init cy_detect_isa(void) |
1da177e4 LT |
3257 | { |
3258 | #ifdef CONFIG_ISA | |
718c4ca1 | 3259 | struct cyclades_card *card; |
02f1175c JS |
3260 | unsigned short cy_isa_irq, nboard; |
3261 | void __iomem *cy_isa_address; | |
734cc178 | 3262 | unsigned short i, j, k, cy_isa_nchan; |
02f1175c | 3263 | int isparam = 0; |
1da177e4 | 3264 | |
02f1175c | 3265 | nboard = 0; |
1da177e4 | 3266 | |
1da177e4 | 3267 | /* Check for module parameters */ |
02f1175c JS |
3268 | for (i = 0; i < NR_CARDS; i++) { |
3269 | if (maddr[i] || i) { | |
3270 | isparam = 1; | |
3271 | cy_isa_addresses[i] = maddr[i]; | |
3272 | } | |
3273 | if (!maddr[i]) | |
3274 | break; | |
1da177e4 | 3275 | } |
1da177e4 | 3276 | |
02f1175c JS |
3277 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
3278 | for (i = 0; i < NR_ISA_ADDRS; i++) { | |
3279 | unsigned int isa_address = cy_isa_addresses[i]; | |
15ed6cc0 | 3280 | if (isa_address == 0x0000) |
096dcfce | 3281 | return nboard; |
1da177e4 | 3282 | |
02f1175c | 3283 | /* probe for CD1400... */ |
cd989b3a | 3284 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
3137553d JS |
3285 | if (cy_isa_address == NULL) { |
3286 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " | |
3287 | "address\n"); | |
3288 | continue; | |
3289 | } | |
02f1175c JS |
3290 | cy_isa_nchan = CyPORTS_PER_CHIP * |
3291 | cyy_init_card(cy_isa_address, 0); | |
3292 | if (cy_isa_nchan == 0) { | |
3137553d | 3293 | iounmap(cy_isa_address); |
02f1175c JS |
3294 | continue; |
3295 | } | |
20904363 | 3296 | |
196b3167 | 3297 | if (isparam && i < NR_CARDS && irq[i]) |
02f1175c | 3298 | cy_isa_irq = irq[i]; |
1da177e4 | 3299 | else |
02f1175c JS |
3300 | /* find out the board's irq by probing */ |
3301 | cy_isa_irq = detect_isa_irq(cy_isa_address); | |
3302 | if (cy_isa_irq == 0) { | |
21719191 JS |
3303 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
3304 | "IRQ could not be detected.\n", | |
02f1175c | 3305 | (unsigned long)cy_isa_address); |
3137553d | 3306 | iounmap(cy_isa_address); |
02f1175c JS |
3307 | continue; |
3308 | } | |
3309 | ||
3310 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { | |
21719191 JS |
3311 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3312 | "more channels are available. Change NR_PORTS " | |
3313 | "in 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 | /* fill the next cy_card structure available */ | |
3319 | for (j = 0; j < NR_CARDS; j++) { | |
718c4ca1 JS |
3320 | card = &cy_card[j]; |
3321 | if (card->base_addr == NULL) | |
02f1175c JS |
3322 | break; |
3323 | } | |
3324 | if (j == NR_CARDS) { /* no more cy_cards available */ | |
21719191 JS |
3325 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
3326 | "more cards can be used. Change NR_CARDS in " | |
3327 | "cyclades.c and recompile kernel.\n", | |
02f1175c | 3328 | (unsigned long)cy_isa_address); |
3137553d | 3329 | iounmap(cy_isa_address); |
096dcfce | 3330 | return nboard; |
02f1175c JS |
3331 | } |
3332 | ||
3333 | /* allocate IRQ */ | |
3334 | if (request_irq(cy_isa_irq, cyy_interrupt, | |
718c4ca1 | 3335 | 0, "Cyclom-Y", card)) { |
21719191 JS |
3336 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
3337 | "could not allocate IRQ#%d.\n", | |
3338 | (unsigned long)cy_isa_address, cy_isa_irq); | |
3137553d | 3339 | iounmap(cy_isa_address); |
096dcfce | 3340 | return nboard; |
02f1175c JS |
3341 | } |
3342 | ||
3343 | /* set cy_card */ | |
718c4ca1 JS |
3344 | card->base_addr = cy_isa_address; |
3345 | card->ctl_addr.p9050 = NULL; | |
3346 | card->irq = (int)cy_isa_irq; | |
3347 | card->bus_index = 0; | |
3348 | card->first_line = cy_next_channel; | |
3349 | card->num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; | |
3350 | card->nports = cy_isa_nchan; | |
3351 | if (cy_init_card(card)) { | |
3352 | card->base_addr = NULL; | |
3353 | free_irq(cy_isa_irq, card); | |
3137553d JS |
3354 | iounmap(cy_isa_address); |
3355 | continue; | |
3356 | } | |
02f1175c JS |
3357 | nboard++; |
3358 | ||
21719191 JS |
3359 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
3360 | "%d channels starting from port %d\n", | |
02f1175c JS |
3361 | j + 1, (unsigned long)cy_isa_address, |
3362 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), | |
21719191 JS |
3363 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
3364 | ||
734cc178 JS |
3365 | for (k = 0, j = cy_next_channel; |
3366 | j < cy_next_channel + cy_isa_nchan; j++, k++) | |
3367 | tty_port_register_device(&card->ports[k].port, | |
3368 | cy_serial_driver, j, NULL); | |
02f1175c JS |
3369 | cy_next_channel += cy_isa_nchan; |
3370 | } | |
096dcfce | 3371 | return nboard; |
1da177e4 | 3372 | #else |
096dcfce | 3373 | return 0; |
02f1175c JS |
3374 | #endif /* CONFIG_ISA */ |
3375 | } /* cy_detect_isa */ | |
1da177e4 | 3376 | |
58936d8d | 3377 | #ifdef CONFIG_PCI |
9671f099 | 3378 | static inline int cyc_isfwstr(const char *str, unsigned int size) |
054f5b0a JS |
3379 | { |
3380 | unsigned int a; | |
3381 | ||
3382 | for (a = 0; a < size && *str; a++, str++) | |
3383 | if (*str & 0x80) | |
3384 | return -EINVAL; | |
3385 | ||
3386 | for (; a < size; a++, str++) | |
3387 | if (*str) | |
3388 | return -EINVAL; | |
3389 | ||
3390 | return 0; | |
3391 | } | |
3392 | ||
9671f099 | 3393 | static inline void cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
054f5b0a JS |
3394 | unsigned int size) |
3395 | { | |
3396 | for (; size > 0; size--) { | |
3397 | cy_writel(fpga, *data++); | |
3398 | udelay(10); | |
3399 | } | |
3400 | } | |
3401 | ||
9671f099 | 3402 | static void plx_init(struct pci_dev *pdev, int irq, |
054f5b0a | 3403 | struct RUNTIME_9060 __iomem *addr) |
1da177e4 | 3404 | { |
02f1175c | 3405 | /* Reset PLX */ |
054f5b0a | 3406 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
02f1175c | 3407 | udelay(100L); |
054f5b0a | 3408 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
02f1175c JS |
3409 | |
3410 | /* Reload Config. Registers from EEPROM */ | |
054f5b0a | 3411 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
02f1175c | 3412 | udelay(100L); |
054f5b0a JS |
3413 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
3414 | ||
3415 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, | |
3416 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. | |
3417 | * registers. This will remain here until we find a permanent fix. | |
3418 | */ | |
3419 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); | |
3420 | } | |
3421 | ||
9671f099 | 3422 | static int __cyz_load_fw(const struct firmware *fw, |
054f5b0a JS |
3423 | const char *name, const u32 mailbox, void __iomem *base, |
3424 | void __iomem *fpga) | |
3425 | { | |
f61e761e DW |
3426 | const void *ptr = fw->data; |
3427 | const struct zfile_header *h = ptr; | |
3428 | const struct zfile_config *c, *cs; | |
3429 | const struct zfile_block *b, *bs; | |
054f5b0a JS |
3430 | unsigned int a, tmp, len = fw->size; |
3431 | #define BAD_FW KERN_ERR "Bad firmware: " | |
3432 | if (len < sizeof(*h)) { | |
3433 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); | |
3434 | return -EINVAL; | |
3435 | } | |
3436 | ||
3437 | cs = ptr + h->config_offset; | |
3438 | bs = ptr + h->block_offset; | |
3439 | ||
3440 | if ((void *)(cs + h->n_config) > ptr + len || | |
3441 | (void *)(bs + h->n_blocks) > ptr + len) { | |
3442 | printk(BAD_FW "too short"); | |
3443 | return -EINVAL; | |
3444 | } | |
3445 | ||
3446 | if (cyc_isfwstr(h->name, sizeof(h->name)) || | |
3447 | cyc_isfwstr(h->date, sizeof(h->date))) { | |
3448 | printk(BAD_FW "bad formatted header string\n"); | |
3449 | return -EINVAL; | |
3450 | } | |
3451 | ||
3452 | if (strncmp(name, h->name, sizeof(h->name))) { | |
3453 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); | |
3454 | return -EINVAL; | |
3455 | } | |
3456 | ||
3457 | tmp = 0; | |
3458 | for (c = cs; c < cs + h->n_config; c++) { | |
3459 | for (a = 0; a < c->n_blocks; a++) | |
3460 | if (c->block_list[a] > h->n_blocks) { | |
3461 | printk(BAD_FW "bad block ref number in cfgs\n"); | |
3462 | return -EINVAL; | |
3463 | } | |
3464 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ | |
3465 | tmp++; | |
3466 | } | |
3467 | if (!tmp) { | |
3468 | printk(BAD_FW "nothing appropriate\n"); | |
3469 | return -EINVAL; | |
3470 | } | |
3471 | ||
3472 | for (b = bs; b < bs + h->n_blocks; b++) | |
3473 | if (b->file_offset + b->size > len) { | |
3474 | printk(BAD_FW "bad block data offset\n"); | |
3475 | return -EINVAL; | |
3476 | } | |
3477 | ||
3478 | /* everything is OK, let's seek'n'load it */ | |
3479 | for (c = cs; c < cs + h->n_config; c++) | |
3480 | if (c->mailbox == mailbox && c->function == 0) | |
3481 | break; | |
3482 | ||
3483 | for (a = 0; a < c->n_blocks; a++) { | |
3484 | b = &bs[c->block_list[a]]; | |
3485 | if (b->type == ZBLOCK_FPGA) { | |
3486 | if (fpga != NULL) | |
3487 | cyz_fpga_copy(fpga, ptr + b->file_offset, | |
3488 | b->size); | |
3489 | } else { | |
3490 | if (base != NULL) | |
3491 | memcpy_toio(base + b->ram_offset, | |
3492 | ptr + b->file_offset, b->size); | |
3493 | } | |
3494 | } | |
3495 | #undef BAD_FW | |
3496 | return 0; | |
3497 | } | |
3498 | ||
9671f099 | 3499 | static int cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, |
054f5b0a JS |
3500 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) |
3501 | { | |
3502 | const struct firmware *fw; | |
3503 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; | |
3504 | struct CUSTOM_REG __iomem *cust = base_addr; | |
3505 | struct ZFW_CTRL __iomem *pt_zfwctrl; | |
c4923b4f | 3506 | void __iomem *tmp; |
963118ee | 3507 | u32 mailbox, status, nchan; |
054f5b0a JS |
3508 | unsigned int i; |
3509 | int retval; | |
3510 | ||
3511 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); | |
3512 | if (retval) { | |
3513 | dev_err(&pdev->dev, "can't get firmware\n"); | |
3514 | goto err; | |
3515 | } | |
3516 | ||
3517 | /* Check whether the firmware is already loaded and running. If | |
3518 | positive, skip this board */ | |
2693f485 | 3519 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
054f5b0a JS |
3520 | u32 cntval = readl(base_addr + 0x190); |
3521 | ||
3522 | udelay(100); | |
3523 | if (cntval != readl(base_addr + 0x190)) { | |
3524 | /* FW counter is working, FW is running */ | |
3525 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " | |
3526 | "Skipping board.\n"); | |
3527 | retval = 0; | |
3528 | goto err_rel; | |
3529 | } | |
3530 | } | |
3531 | ||
3532 | /* start boot */ | |
3533 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & | |
3534 | ~0x00030800UL); | |
3535 | ||
3536 | mailbox = readl(&ctl_addr->mail_box_0); | |
3537 | ||
2693f485 | 3538 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3539 | /* stops CPU and set window to beginning of RAM */ |
3540 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3541 | cy_writel(&cust->cpu_stop, 0); | |
3542 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3543 | udelay(100); | |
3544 | } | |
3545 | ||
3546 | plx_init(pdev, irq, ctl_addr); | |
3547 | ||
3548 | if (mailbox != 0) { | |
3549 | /* load FPGA */ | |
3550 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, | |
3551 | base_addr); | |
3552 | if (retval) | |
3553 | goto err_rel; | |
2693f485 | 3554 | if (!__cyz_fpga_loaded(ctl_addr)) { |
054f5b0a JS |
3555 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
3556 | "not loaded\n"); | |
3557 | goto err_rel; | |
3558 | } | |
3559 | } | |
3560 | ||
3561 | /* stops CPU and set window to beginning of RAM */ | |
3562 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3563 | cy_writel(&cust->cpu_stop, 0); | |
3564 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3565 | udelay(100); | |
3566 | ||
3567 | /* clear memory */ | |
c4923b4f | 3568 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3569 | cy_writeb(tmp, 255); |
3570 | if (mailbox != 0) { | |
3571 | /* set window to last 512K of RAM */ | |
3572 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); | |
c4923b4f | 3573 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
054f5b0a JS |
3574 | cy_writeb(tmp, 255); |
3575 | /* set window to beginning of RAM */ | |
3576 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
054f5b0a JS |
3577 | } |
3578 | ||
3579 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); | |
3580 | release_firmware(fw); | |
3581 | if (retval) | |
3582 | goto err; | |
3583 | ||
3584 | /* finish boot and start boards */ | |
3585 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3586 | cy_writel(&cust->cpu_start, 0); | |
3587 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3588 | i = 0; | |
3589 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) | |
3590 | msleep(100); | |
3591 | if (status != ZFIRM_ID) { | |
3592 | if (status == ZFIRM_HLT) { | |
3593 | dev_err(&pdev->dev, "you need an external power supply " | |
3594 | "for this number of ports. Firmware halted and " | |
3595 | "board reset.\n"); | |
3596 | retval = -EIO; | |
3597 | goto err; | |
3598 | } | |
3599 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " | |
3600 | "some more time\n", status); | |
3601 | while ((status = readl(&fid->signature)) != ZFIRM_ID && | |
3602 | i++ < 200) | |
3603 | msleep(100); | |
3604 | if (status != ZFIRM_ID) { | |
3605 | dev_err(&pdev->dev, "Board not started in 20 seconds! " | |
3606 | "Giving up. (fid->signature = 0x%x)\n", | |
3607 | status); | |
3608 | dev_info(&pdev->dev, "*** Warning ***: if you are " | |
3609 | "upgrading the FW, please power cycle the " | |
3610 | "system before loading the new FW to the " | |
3611 | "Cyclades-Z.\n"); | |
3612 | ||
2693f485 | 3613 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3614 | plx_init(pdev, irq, ctl_addr); |
3615 | ||
3616 | retval = -EIO; | |
3617 | goto err; | |
3618 | } | |
3619 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", | |
3620 | i / 10); | |
3621 | } | |
3622 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); | |
3623 | ||
3624 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", | |
3625 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), | |
3626 | base_addr + readl(&fid->zfwctrl_addr)); | |
3627 | ||
963118ee | 3628 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
054f5b0a | 3629 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
963118ee | 3630 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
054f5b0a | 3631 | |
963118ee | 3632 | if (nchan == 0) { |
054f5b0a JS |
3633 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
3634 | "check the connection between the Z host card and the " | |
3635 | "serial expanders.\n"); | |
3636 | ||
2693f485 | 3637 | if (__cyz_fpga_loaded(ctl_addr)) |
054f5b0a JS |
3638 | plx_init(pdev, irq, ctl_addr); |
3639 | ||
3640 | dev_info(&pdev->dev, "Null number of ports detected. Board " | |
3641 | "reset.\n"); | |
3642 | retval = 0; | |
3643 | goto err; | |
3644 | } | |
3645 | ||
3646 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); | |
3647 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); | |
3648 | ||
3649 | /* | |
3650 | Early firmware failed to start looking for commands. | |
3651 | This enables firmware interrupts for those commands. | |
3652 | */ | |
3653 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3654 | (1 << 17)); | |
3655 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | | |
3656 | 0x00030800UL); | |
3657 | ||
963118ee | 3658 | return nchan; |
054f5b0a JS |
3659 | err_rel: |
3660 | release_firmware(fw); | |
3661 | err: | |
3662 | return retval; | |
1da177e4 LT |
3663 | } |
3664 | ||
9671f099 | 3665 | static int cy_pci_probe(struct pci_dev *pdev, |
58936d8d | 3666 | const struct pci_device_id *ent) |
1da177e4 | 3667 | { |
718c4ca1 | 3668 | struct cyclades_card *card; |
3137553d JS |
3669 | void __iomem *addr0 = NULL, *addr2 = NULL; |
3670 | char *card_name = NULL; | |
101b8159 | 3671 | u32 uninitialized_var(mailbox); |
734cc178 | 3672 | unsigned int device_id, nchan = 0, card_no, i, j; |
3137553d JS |
3673 | unsigned char plx_ver; |
3674 | int retval, irq; | |
02f1175c | 3675 | |
58936d8d JS |
3676 | retval = pci_enable_device(pdev); |
3677 | if (retval) { | |
3678 | dev_err(&pdev->dev, "cannot enable device\n"); | |
3137553d | 3679 | goto err; |
58936d8d | 3680 | } |
1da177e4 | 3681 | |
58936d8d | 3682 | /* read PCI configuration area */ |
3137553d | 3683 | irq = pdev->irq; |
58936d8d | 3684 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
1da177e4 | 3685 | |
3137553d JS |
3686 | #if defined(__alpha__) |
3687 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ | |
3688 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " | |
3689 | "addresses on Alpha systems.\n"); | |
3690 | retval = -EIO; | |
3691 | goto err_dis; | |
3692 | } | |
3693 | #endif | |
3694 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { | |
3695 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " | |
3696 | "addresses\n"); | |
3697 | retval = -EIO; | |
3698 | goto err_dis; | |
3699 | } | |
3700 | ||
3701 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { | |
3702 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " | |
3703 | "it...\n"); | |
3704 | pdev->resource[2].flags &= ~IORESOURCE_IO; | |
3705 | } | |
3706 | ||
3707 | retval = pci_request_regions(pdev, "cyclades"); | |
3708 | if (retval) { | |
3709 | dev_err(&pdev->dev, "failed to reserve resources\n"); | |
3710 | goto err_dis; | |
3711 | } | |
3712 | ||
3713 | retval = -EIO; | |
58936d8d JS |
3714 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3715 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3137553d | 3716 | card_name = "Cyclom-Y"; |
1da177e4 | 3717 | |
24e6fd4c JS |
3718 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3719 | CyPCI_Yctl); | |
3137553d JS |
3720 | if (addr0 == NULL) { |
3721 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3722 | goto err_reg; | |
58936d8d | 3723 | } |
24e6fd4c JS |
3724 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3725 | CyPCI_Ywin); | |
3137553d JS |
3726 | if (addr2 == NULL) { |
3727 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3728 | goto err_unmap; | |
58936d8d | 3729 | } |
1da177e4 | 3730 | |
3137553d JS |
3731 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
3732 | if (nchan == 0) { | |
21719191 JS |
3733 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
3734 | "Serial-Modules\n"); | |
c847d47c | 3735 | goto err_unmap; |
58936d8d | 3736 | } |
58936d8d | 3737 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
3137553d | 3738 | struct RUNTIME_9060 __iomem *ctl_addr; |
21719191 | 3739 | |
24e6fd4c JS |
3740 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
3741 | CyPCI_Zctl); | |
3137553d JS |
3742 | if (addr0 == NULL) { |
3743 | dev_err(&pdev->dev, "can't remap ctl region\n"); | |
3744 | goto err_reg; | |
3745 | } | |
58936d8d JS |
3746 | |
3747 | /* Disable interrupts on the PLX before resetting it */ | |
97e87f8e JS |
3748 | cy_writew(&ctl_addr->intr_ctrl_stat, |
3749 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); | |
58936d8d | 3750 | |
054f5b0a | 3751 | plx_init(pdev, irq, addr0); |
02f1175c | 3752 | |
101b8159 | 3753 | mailbox = readl(&ctl_addr->mail_box_0); |
58936d8d | 3754 | |
24e6fd4c JS |
3755 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
3756 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); | |
3137553d JS |
3757 | if (addr2 == NULL) { |
3758 | dev_err(&pdev->dev, "can't remap base region\n"); | |
3759 | goto err_unmap; | |
58936d8d JS |
3760 | } |
3761 | ||
3762 | if (mailbox == ZE_V1) { | |
3137553d | 3763 | card_name = "Cyclades-Ze"; |
58936d8d | 3764 | } else { |
3137553d | 3765 | card_name = "Cyclades-8Zo"; |
1da177e4 | 3766 | #ifdef CY_PCI_DEBUG |
3137553d JS |
3767 | if (mailbox == ZO_V1) { |
3768 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); | |
3769 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " | |
3770 | "id %lx, ver %lx\n", (ulong)(0xff & | |
3771 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3772 | fpga_id)), (ulong)(0xff & | |
3773 | readl(&((struct CUSTOM_REG *)addr2)-> | |
3774 | fpga_version))); | |
3775 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); | |
3776 | } else { | |
3777 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " | |
3778 | "Cyclades-Z board. FPGA not loaded\n"); | |
3779 | } | |
1da177e4 | 3780 | #endif |
3137553d JS |
3781 | /* The following clears the firmware id word. This |
3782 | ensures that the driver will not attempt to talk to | |
3783 | the board until it has been properly initialized. | |
3784 | */ | |
3785 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) | |
3786 | cy_writel(addr2 + ID_ADDRESS, 0L); | |
58936d8d | 3787 | } |
ace08c3c JS |
3788 | |
3789 | retval = cyz_load_fw(pdev, addr2, addr0, irq); | |
963118ee | 3790 | if (retval <= 0) |
ace08c3c | 3791 | goto err_unmap; |
963118ee | 3792 | nchan = retval; |
3137553d JS |
3793 | } |
3794 | ||
3795 | if ((cy_next_channel + nchan) > NR_PORTS) { | |
3796 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3797 | "channels are available. Change NR_PORTS in " | |
3798 | "cyclades.c and recompile kernel.\n"); | |
3799 | goto err_unmap; | |
3800 | } | |
3801 | /* fill the next cy_card structure available */ | |
3802 | for (card_no = 0; card_no < NR_CARDS; card_no++) { | |
718c4ca1 JS |
3803 | card = &cy_card[card_no]; |
3804 | if (card->base_addr == NULL) | |
3137553d JS |
3805 | break; |
3806 | } | |
3807 | if (card_no == NR_CARDS) { /* no more cy_cards available */ | |
3808 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " | |
3809 | "more cards can be used. Change NR_CARDS in " | |
3810 | "cyclades.c and recompile kernel.\n"); | |
3811 | goto err_unmap; | |
3812 | } | |
3813 | ||
3814 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || | |
3815 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3816 | /* allocate IRQ */ | |
3817 | retval = request_irq(irq, cyy_interrupt, | |
718c4ca1 | 3818 | IRQF_SHARED, "Cyclom-Y", card); |
3137553d JS |
3819 | if (retval) { |
3820 | dev_err(&pdev->dev, "could not allocate IRQ\n"); | |
3821 | goto err_unmap; | |
58936d8d | 3822 | } |
718c4ca1 | 3823 | card->num_chips = nchan / CyPORTS_PER_CHIP; |
3137553d | 3824 | } else { |
f0eefdc3 JS |
3825 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
3826 | struct ZFW_CTRL __iomem *zfw_ctrl; | |
3827 | ||
3828 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); | |
3829 | ||
718c4ca1 JS |
3830 | card->hw_ver = mailbox; |
3831 | card->num_chips = (unsigned int)-1; | |
3832 | card->board_ctrl = &zfw_ctrl->board_ctrl; | |
02f1175c | 3833 | #ifdef CONFIG_CYZ_INTR |
58936d8d | 3834 | /* allocate IRQ only if board has an IRQ */ |
3137553d JS |
3835 | if (irq != 0 && irq != 255) { |
3836 | retval = request_irq(irq, cyz_interrupt, | |
718c4ca1 | 3837 | IRQF_SHARED, "Cyclades-Z", card); |
58936d8d | 3838 | if (retval) { |
21719191 | 3839 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
3137553d | 3840 | goto err_unmap; |
02f1175c | 3841 | } |
58936d8d | 3842 | } |
02f1175c | 3843 | #endif /* CONFIG_CYZ_INTR */ |
3137553d | 3844 | } |
02f1175c | 3845 | |
3137553d | 3846 | /* set cy_card */ |
718c4ca1 JS |
3847 | card->base_addr = addr2; |
3848 | card->ctl_addr.p9050 = addr0; | |
3849 | card->irq = irq; | |
3850 | card->bus_index = 1; | |
3851 | card->first_line = cy_next_channel; | |
3852 | card->nports = nchan; | |
3853 | retval = cy_init_card(card); | |
3137553d JS |
3854 | if (retval) |
3855 | goto err_null; | |
58936d8d | 3856 | |
718c4ca1 | 3857 | pci_set_drvdata(pdev, card); |
58936d8d | 3858 | |
3137553d JS |
3859 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
3860 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { | |
3861 | /* enable interrupts in the PCI interface */ | |
3862 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; | |
3863 | switch (plx_ver) { | |
3864 | case PLX_9050: | |
3137553d JS |
3865 | cy_writeb(addr0 + 0x4c, 0x43); |
3866 | break; | |
3867 | ||
3868 | case PLX_9060: | |
3869 | case PLX_9080: | |
3870 | default: /* Old boards, use PLX_9060 */ | |
97e87f8e JS |
3871 | { |
3872 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; | |
3873 | plx_init(pdev, irq, ctl_addr); | |
3874 | cy_writew(&ctl_addr->intr_ctrl_stat, | |
3875 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); | |
3137553d JS |
3876 | break; |
3877 | } | |
97e87f8e | 3878 | } |
58936d8d JS |
3879 | } |
3880 | ||
3137553d JS |
3881 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
3882 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); | |
734cc178 JS |
3883 | for (j = 0, i = cy_next_channel; i < cy_next_channel + nchan; i++, j++) |
3884 | tty_port_register_device(&card->ports[j].port, | |
3885 | cy_serial_driver, i, &pdev->dev); | |
3137553d JS |
3886 | cy_next_channel += nchan; |
3887 | ||
58936d8d | 3888 | return 0; |
3137553d | 3889 | err_null: |
718c4ca1 JS |
3890 | card->base_addr = NULL; |
3891 | free_irq(irq, card); | |
3137553d | 3892 | err_unmap: |
24e6fd4c | 3893 | iounmap(addr0); |
3137553d | 3894 | if (addr2) |
24e6fd4c | 3895 | iounmap(addr2); |
3137553d JS |
3896 | err_reg: |
3897 | pci_release_regions(pdev); | |
3898 | err_dis: | |
3899 | pci_disable_device(pdev); | |
3900 | err: | |
3901 | return retval; | |
58936d8d | 3902 | } |
58936d8d | 3903 | |
ae8d8a14 | 3904 | static void cy_pci_remove(struct pci_dev *pdev) |
58936d8d | 3905 | { |
38d09093 | 3906 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
191c5f10 | 3907 | unsigned int i, channel; |
38d09093 | 3908 | |
85c93fa9 | 3909 | /* non-Z with old PLX */ |
2693f485 | 3910 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
c2ad4c75 | 3911 | PLX_9050) |
97e87f8e | 3912 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
85c93fa9 JS |
3913 | else |
3914 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3915 | if (!cy_is_Z(cinfo)) |
85c93fa9 | 3916 | #endif |
97e87f8e JS |
3917 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
3918 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & | |
3919 | ~0x0900); | |
85c93fa9 | 3920 | |
24e6fd4c | 3921 | iounmap(cinfo->base_addr); |
97e87f8e JS |
3922 | if (cinfo->ctl_addr.p9050) |
3923 | iounmap(cinfo->ctl_addr.p9050); | |
38d09093 JS |
3924 | if (cinfo->irq |
3925 | #ifndef CONFIG_CYZ_INTR | |
2693f485 | 3926 | && !cy_is_Z(cinfo) |
38d09093 JS |
3927 | #endif /* CONFIG_CYZ_INTR */ |
3928 | ) | |
3929 | free_irq(cinfo->irq, cinfo); | |
3930 | pci_release_regions(pdev); | |
3931 | ||
3932 | cinfo->base_addr = NULL; | |
191c5f10 JS |
3933 | for (channel = 0, i = cinfo->first_line; i < cinfo->first_line + |
3934 | cinfo->nports; i++, channel++) { | |
6ad1ccc1 | 3935 | tty_unregister_device(cy_serial_driver, i); |
191c5f10 JS |
3936 | tty_port_destroy(&cinfo->ports[channel].port); |
3937 | } | |
dd025c0c JS |
3938 | cinfo->nports = 0; |
3939 | kfree(cinfo->ports); | |
38d09093 JS |
3940 | } |
3941 | ||
6747cd93 JS |
3942 | static struct pci_driver cy_pci_driver = { |
3943 | .name = "cyclades", | |
3944 | .id_table = cy_pci_dev_id, | |
3945 | .probe = cy_pci_probe, | |
91116cba | 3946 | .remove = cy_pci_remove |
6747cd93 JS |
3947 | }; |
3948 | #endif | |
3949 | ||
444697d6 | 3950 | static int cyclades_proc_show(struct seq_file *m, void *v) |
1da177e4 | 3951 | { |
02f1175c | 3952 | struct cyclades_port *info; |
dd025c0c | 3953 | unsigned int i, j; |
02f1175c JS |
3954 | __u32 cur_jifs = jiffies; |
3955 | ||
444697d6 | 3956 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
02f1175c JS |
3957 | "IdleIn Overruns Ldisc\n"); |
3958 | ||
02f1175c | 3959 | /* Output one line for each known port */ |
dd025c0c JS |
3960 | for (i = 0; i < NR_CARDS; i++) |
3961 | for (j = 0; j < cy_card[i].nports; j++) { | |
3962 | info = &cy_card[i].ports[j]; | |
3963 | ||
d13549f8 JS |
3964 | if (info->port.count) { |
3965 | /* XXX is the ldisc num worth this? */ | |
3966 | struct tty_struct *tty; | |
3967 | struct tty_ldisc *ld; | |
3968 | int num = 0; | |
3969 | tty = tty_port_tty_get(&info->port); | |
3970 | if (tty) { | |
3971 | ld = tty_ldisc_ref(tty); | |
3972 | if (ld) { | |
3973 | num = ld->ops->num; | |
3974 | tty_ldisc_deref(ld); | |
3975 | } | |
3976 | tty_kref_put(tty); | |
3977 | } | |
444697d6 | 3978 | seq_printf(m, "%3d %8lu %10lu %8lu " |
d13549f8 | 3979 | "%10lu %8lu %9lu %6d\n", info->line, |
dd025c0c JS |
3980 | (cur_jifs - info->idle_stats.in_use) / |
3981 | HZ, info->idle_stats.xmit_bytes, | |
3982 | (cur_jifs - info->idle_stats.xmit_idle)/ | |
3983 | HZ, info->idle_stats.recv_bytes, | |
3984 | (cur_jifs - info->idle_stats.recv_idle)/ | |
3985 | HZ, info->idle_stats.overruns, | |
d13549f8 JS |
3986 | num); |
3987 | } else | |
444697d6 | 3988 | seq_printf(m, "%3d %8lu %10lu %8lu " |
dd025c0c JS |
3989 | "%10lu %8lu %9lu %6ld\n", |
3990 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); | |
02f1175c | 3991 | } |
444697d6 AD |
3992 | return 0; |
3993 | } | |
3994 | ||
3995 | static int cyclades_proc_open(struct inode *inode, struct file *file) | |
3996 | { | |
3997 | return single_open(file, cyclades_proc_show, NULL); | |
1da177e4 LT |
3998 | } |
3999 | ||
444697d6 AD |
4000 | static const struct file_operations cyclades_proc_fops = { |
4001 | .owner = THIS_MODULE, | |
4002 | .open = cyclades_proc_open, | |
4003 | .read = seq_read, | |
4004 | .llseek = seq_lseek, | |
4005 | .release = single_release, | |
4006 | }; | |
4007 | ||
1da177e4 LT |
4008 | /* The serial driver boot-time initialization code! |
4009 | Hardware I/O ports are mapped to character special devices on a | |
4010 | first found, first allocated manner. That is, this code searches | |
4011 | for Cyclom cards in the system. As each is found, it is probed | |
4012 | to discover how many chips (and thus how many ports) are present. | |
4013 | These ports are mapped to the tty ports 32 and upward in monotonic | |
4014 | fashion. If an 8-port card is replaced with a 16-port card, the | |
4015 | port mapping on a following card will shift. | |
4016 | ||
4017 | This approach is different from what is used in the other serial | |
4018 | device driver because the Cyclom is more properly a multiplexer, | |
4019 | not just an aggregation of serial ports on one card. | |
4020 | ||
4021 | If there are more cards with more ports than have been | |
4022 | statically allocated above, a warning is printed and the | |
4023 | extra ports are ignored. | |
4024 | */ | |
4025 | ||
b68e31d0 | 4026 | static const struct tty_operations cy_ops = { |
02f1175c JS |
4027 | .open = cy_open, |
4028 | .close = cy_close, | |
4029 | .write = cy_write, | |
4030 | .put_char = cy_put_char, | |
4031 | .flush_chars = cy_flush_chars, | |
4032 | .write_room = cy_write_room, | |
4033 | .chars_in_buffer = cy_chars_in_buffer, | |
4034 | .flush_buffer = cy_flush_buffer, | |
4035 | .ioctl = cy_ioctl, | |
4036 | .throttle = cy_throttle, | |
4037 | .unthrottle = cy_unthrottle, | |
4038 | .set_termios = cy_set_termios, | |
4039 | .stop = cy_stop, | |
4040 | .start = cy_start, | |
4041 | .hangup = cy_hangup, | |
4042 | .break_ctl = cy_break, | |
4043 | .wait_until_sent = cy_wait_until_sent, | |
02f1175c JS |
4044 | .tiocmget = cy_tiocmget, |
4045 | .tiocmset = cy_tiocmset, | |
0587102c | 4046 | .get_icount = cy_get_icount, |
444697d6 | 4047 | .proc_fops = &cyclades_proc_fops, |
1da177e4 LT |
4048 | }; |
4049 | ||
02f1175c | 4050 | static int __init cy_init(void) |
1da177e4 | 4051 | { |
dd025c0c | 4052 | unsigned int nboards; |
9dacf3b2 | 4053 | int retval = -ENOMEM; |
02f1175c JS |
4054 | |
4055 | cy_serial_driver = alloc_tty_driver(NR_PORTS); | |
4056 | if (!cy_serial_driver) | |
9dacf3b2 | 4057 | goto err; |
21719191 | 4058 | |
64a14b51 | 4059 | printk(KERN_INFO "Cyclades driver " CY_VERSION "\n"); |
02f1175c JS |
4060 | |
4061 | /* Initialize the tty_driver structure */ | |
4062 | ||
02f1175c JS |
4063 | cy_serial_driver->driver_name = "cyclades"; |
4064 | cy_serial_driver->name = "ttyC"; | |
4065 | cy_serial_driver->major = CYCLADES_MAJOR; | |
4066 | cy_serial_driver->minor_start = 0; | |
4067 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; | |
4068 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; | |
4069 | cy_serial_driver->init_termios = tty_std_termios; | |
4070 | cy_serial_driver->init_termios.c_cflag = | |
4071 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; | |
6ad1ccc1 | 4072 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
02f1175c JS |
4073 | tty_set_operations(cy_serial_driver, &cy_ops); |
4074 | ||
9dacf3b2 JS |
4075 | retval = tty_register_driver(cy_serial_driver); |
4076 | if (retval) { | |
4077 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); | |
4078 | goto err_frtty; | |
4079 | } | |
02f1175c | 4080 | |
02f1175c JS |
4081 | /* the code below is responsible to find the boards. Each different |
4082 | type of board has its own detection routine. If a board is found, | |
4083 | the next cy_card structure available is set by the detection | |
4084 | routine. These functions are responsible for checking the | |
4085 | availability of cy_card and cy_port data structures and updating | |
4086 | the cy_next_channel. */ | |
4087 | ||
4088 | /* look for isa boards */ | |
14a55a67 | 4089 | nboards = cy_detect_isa(); |
02f1175c | 4090 | |
6747cd93 | 4091 | #ifdef CONFIG_PCI |
02f1175c | 4092 | /* look for pci boards */ |
6747cd93 | 4093 | retval = pci_register_driver(&cy_pci_driver); |
d941ea7d JJ |
4094 | if (retval && !nboards) { |
4095 | tty_unregister_driver(cy_serial_driver); | |
4096 | goto err_frtty; | |
4097 | } | |
6747cd93 | 4098 | #endif |
9dacf3b2 JS |
4099 | |
4100 | return 0; | |
9dacf3b2 JS |
4101 | err_frtty: |
4102 | put_tty_driver(cy_serial_driver); | |
4103 | err: | |
4104 | return retval; | |
02f1175c | 4105 | } /* cy_init */ |
1da177e4 | 4106 | |
02f1175c | 4107 | static void __exit cy_cleanup_module(void) |
1da177e4 | 4108 | { |
dd025c0c | 4109 | struct cyclades_card *card; |
65f76a82 | 4110 | unsigned int i, e1; |
1da177e4 LT |
4111 | |
4112 | #ifndef CONFIG_CYZ_INTR | |
b7050906 | 4113 | del_timer_sync(&cyz_timerlist); |
1da177e4 LT |
4114 | #endif /* CONFIG_CYZ_INTR */ |
4115 | ||
15ed6cc0 AC |
4116 | e1 = tty_unregister_driver(cy_serial_driver); |
4117 | if (e1) | |
21719191 JS |
4118 | printk(KERN_ERR "failed to unregister Cyclades serial " |
4119 | "driver(%d)\n", e1); | |
1da177e4 | 4120 | |
6747cd93 JS |
4121 | #ifdef CONFIG_PCI |
4122 | pci_unregister_driver(&cy_pci_driver); | |
4123 | #endif | |
4124 | ||
02f1175c | 4125 | for (i = 0; i < NR_CARDS; i++) { |
dd025c0c JS |
4126 | card = &cy_card[i]; |
4127 | if (card->base_addr) { | |
85c93fa9 | 4128 | /* clear interrupt */ |
dd025c0c JS |
4129 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
4130 | iounmap(card->base_addr); | |
97e87f8e JS |
4131 | if (card->ctl_addr.p9050) |
4132 | iounmap(card->ctl_addr.p9050); | |
dd025c0c | 4133 | if (card->irq |
1da177e4 | 4134 | #ifndef CONFIG_CYZ_INTR |
2693f485 | 4135 | && !cy_is_Z(card) |
1da177e4 | 4136 | #endif /* CONFIG_CYZ_INTR */ |
02f1175c | 4137 | ) |
dd025c0c | 4138 | free_irq(card->irq, card); |
65f76a82 | 4139 | for (e1 = card->first_line; e1 < card->first_line + |
dd025c0c | 4140 | card->nports; e1++) |
6ad1ccc1 | 4141 | tty_unregister_device(cy_serial_driver, e1); |
dd025c0c | 4142 | kfree(card->ports); |
02f1175c JS |
4143 | } |
4144 | } | |
f2462bfe JS |
4145 | |
4146 | put_tty_driver(cy_serial_driver); | |
1da177e4 LT |
4147 | } /* cy_cleanup_module */ |
4148 | ||
4149 | module_init(cy_init); | |
4150 | module_exit(cy_cleanup_module); | |
4151 | ||
4152 | MODULE_LICENSE("GPL"); | |
c8e1693a | 4153 | MODULE_VERSION(CY_VERSION); |
9f56fad7 | 4154 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |
e6c4ef98 | 4155 | MODULE_FIRMWARE("cyzfirm.bin"); |