| uart_dev_sab82532.c (157300) | uart_dev_sab82532.c (157380) |
|---|---|
| 1/*- 2 * Copyright (c) 2003 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2003 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * --- 11 unchanged lines hidden (view full) --- 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/dev/uart/uart_dev_sab82532.c 157300 2006-03-30 18:37:03Z marcel $"); | 28__FBSDID("$FreeBSD: head/sys/dev/uart/uart_dev_sab82532.c 157380 2006-04-01 19:04:54Z marcel $"); |
| 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bus.h> 33#include <sys/conf.h> 34#include <machine/bus.h> 35 36#include <dev/uart/uart.h> --- 132 unchanged lines hidden (view full) --- 169/* 170 * Low-level UART interface. 171 */ 172static int sab82532_probe(struct uart_bas *bas); 173static void sab82532_init(struct uart_bas *bas, int, int, int, int); 174static void sab82532_term(struct uart_bas *bas); 175static void sab82532_putc(struct uart_bas *bas, int); 176static int sab82532_poll(struct uart_bas *bas); | 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/bus.h> 33#include <sys/conf.h> 34#include <machine/bus.h> 35 36#include <dev/uart/uart.h> --- 132 unchanged lines hidden (view full) --- 169/* 170 * Low-level UART interface. 171 */ 172static int sab82532_probe(struct uart_bas *bas); 173static void sab82532_init(struct uart_bas *bas, int, int, int, int); 174static void sab82532_term(struct uart_bas *bas); 175static void sab82532_putc(struct uart_bas *bas, int); 176static int sab82532_poll(struct uart_bas *bas); |
| 177static int sab82532_getc(struct uart_bas *bas); | 177static int sab82532_getc(struct uart_bas *bas, struct mtx *); |
| 178 179struct uart_ops uart_sab82532_ops = { 180 .probe = sab82532_probe, 181 .init = sab82532_init, 182 .term = sab82532_term, 183 .putc = sab82532_putc, 184 .poll = sab82532_poll, 185 .getc = sab82532_getc, --- 116 unchanged lines hidden (view full) --- 302 DELAY(delay); 303} 304 305static int 306sab82532_poll(struct uart_bas *bas) 307{ 308 309 if (uart_getreg(bas, SAB_STAR) & SAB_STAR_RFNE) | 178 179struct uart_ops uart_sab82532_ops = { 180 .probe = sab82532_probe, 181 .init = sab82532_init, 182 .term = sab82532_term, 183 .putc = sab82532_putc, 184 .poll = sab82532_poll, 185 .getc = sab82532_getc, --- 116 unchanged lines hidden (view full) --- 302 DELAY(delay); 303} 304 305static int 306sab82532_poll(struct uart_bas *bas) 307{ 308 309 if (uart_getreg(bas, SAB_STAR) & SAB_STAR_RFNE) |
| 310 return (sab82532_getc(bas)); | 310 return (sab82532_getc(bas, NULL)); |
| 311 return (-1); 312} 313 314static int | 311 return (-1); 312} 313 314static int |
| 315sab82532_getc(struct uart_bas *bas) | 315sab82532_getc(struct uart_bas *bas, struct mtx *hwmtx) |
| 316{ 317 int c, delay; 318 | 316{ 317 int c, delay; 318 |
| 319 uart_lock(hwmtx); 320 |
|
| 319 /* 1/10th the time to transmit 1 character (estimate). */ 320 delay = sab82532_delay(bas); 321 | 321 /* 1/10th the time to transmit 1 character (estimate). */ 322 delay = sab82532_delay(bas); 323 |
| 322 while (!(uart_getreg(bas, SAB_STAR) & SAB_STAR_RFNE)) | 324 while (!(uart_getreg(bas, SAB_STAR) & SAB_STAR_RFNE)) { 325 uart_unlock(hwmtx); |
| 323 DELAY(delay); | 326 DELAY(delay); |
| 327 uart_lock(hwmtx); 328 } |
|
| 324 325 while (uart_getreg(bas, SAB_STAR) & SAB_STAR_CEC) 326 ; 327 uart_setreg(bas, SAB_CMDR, SAB_CMDR_RFRD); 328 uart_barrier(bas); 329 330 while (!(uart_getreg(bas, SAB_ISR0) & SAB_ISR0_TCD)) 331 DELAY(delay); 332 333 c = uart_getreg(bas, SAB_RFIFO); 334 uart_barrier(bas); 335 336 /* Blow away everything left in the FIFO... */ 337 while (uart_getreg(bas, SAB_STAR) & SAB_STAR_CEC) 338 ; 339 uart_setreg(bas, SAB_CMDR, SAB_CMDR_RMC); 340 uart_barrier(bas); | 329 330 while (uart_getreg(bas, SAB_STAR) & SAB_STAR_CEC) 331 ; 332 uart_setreg(bas, SAB_CMDR, SAB_CMDR_RFRD); 333 uart_barrier(bas); 334 335 while (!(uart_getreg(bas, SAB_ISR0) & SAB_ISR0_TCD)) 336 DELAY(delay); 337 338 c = uart_getreg(bas, SAB_RFIFO); 339 uart_barrier(bas); 340 341 /* Blow away everything left in the FIFO... */ 342 while (uart_getreg(bas, SAB_STAR) & SAB_STAR_CEC) 343 ; 344 uart_setreg(bas, SAB_CMDR, SAB_CMDR_RMC); 345 uart_barrier(bas); |
| 346 347 uart_unlock(hwmtx); 348 |
|
| 341 return (c); 342} 343 344/* 345 * High-level UART interface. 346 */ 347struct sab82532_softc { 348 struct uart_softc base; --- 371 unchanged lines hidden --- | 349 return (c); 350} 351 352/* 353 * High-level UART interface. 354 */ 355struct sab82532_softc { 356 struct uart_softc base; --- 371 unchanged lines hidden --- |