Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
| 2 | * $Id: smsc-ircc2.c,v 1.19.2.5 2002/10/27 11:34:26 dip Exp $ |
| 3 | * |
| 4 | * Description: Driver for the SMC Infrared Communications Controller |
| 5 | * Status: Experimental. |
| 6 | * Author: Daniele Peri (peri@csai.unipa.it) |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 7 | * Created at: |
| 8 | * Modified at: |
| 9 | * Modified by: |
| 10 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * Copyright (c) 2002 Daniele Peri |
| 12 | * All Rights Reserved. |
| 13 | * Copyright (c) 2002 Jean Tourrilhes |
| 14 | * |
| 15 | * |
| 16 | * Based on smc-ircc.c: |
| 17 | * |
| 18 | * Copyright (c) 2001 Stefani Seibold |
| 19 | * Copyright (c) 1999-2001 Dag Brattli |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 20 | * Copyright (c) 1998-1999 Thomas Davis, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | * |
| 22 | * and irport.c: |
| 23 | * |
| 24 | * Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved. |
| 25 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 26 | * |
| 27 | * This program is free software; you can redistribute it and/or |
| 28 | * modify it under the terms of the GNU General Public License as |
| 29 | * published by the Free Software Foundation; either version 2 of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | * the License, or (at your option) any later version. |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 31 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | * This program is distributed in the hope that it will be useful, |
| 33 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 34 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 35 | * GNU General Public License for more details. |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 36 | * |
| 37 | * You should have received a copy of the GNU General Public License |
| 38 | * along with this program; if not, write to the Free Software |
| 39 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | * MA 02111-1307 USA |
| 41 | * |
| 42 | ********************************************************************/ |
| 43 | |
| 44 | #include <linux/module.h> |
| 45 | #include <linux/kernel.h> |
| 46 | #include <linux/types.h> |
| 47 | #include <linux/skbuff.h> |
| 48 | #include <linux/netdevice.h> |
| 49 | #include <linux/ioport.h> |
| 50 | #include <linux/delay.h> |
| 51 | #include <linux/slab.h> |
| 52 | #include <linux/init.h> |
| 53 | #include <linux/rtnetlink.h> |
| 54 | #include <linux/serial_reg.h> |
| 55 | #include <linux/dma-mapping.h> |
| 56 | |
| 57 | #include <asm/io.h> |
| 58 | #include <asm/dma.h> |
| 59 | #include <asm/byteorder.h> |
| 60 | |
| 61 | #include <linux/spinlock.h> |
| 62 | #include <linux/pm.h> |
| 63 | |
| 64 | #include <net/irda/wrapper.h> |
| 65 | #include <net/irda/irda.h> |
| 66 | #include <net/irda/irda_device.h> |
| 67 | |
| 68 | #include "smsc-ircc2.h" |
| 69 | #include "smsc-sio.h" |
| 70 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 71 | |
| 72 | MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>"); |
| 73 | MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver"); |
| 74 | MODULE_LICENSE("GPL"); |
| 75 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 76 | static int ircc_dma = 255; |
| 77 | module_param(ircc_dma, int, 0); |
| 78 | MODULE_PARM_DESC(ircc_dma, "DMA channel"); |
| 79 | |
| 80 | static int ircc_irq = 255; |
| 81 | module_param(ircc_irq, int, 0); |
| 82 | MODULE_PARM_DESC(ircc_irq, "IRQ line"); |
| 83 | |
| 84 | static int ircc_fir; |
| 85 | module_param(ircc_fir, int, 0); |
| 86 | MODULE_PARM_DESC(ircc_fir, "FIR Base Address"); |
| 87 | |
| 88 | static int ircc_sir; |
| 89 | module_param(ircc_sir, int, 0); |
| 90 | MODULE_PARM_DESC(ircc_sir, "SIR Base Address"); |
| 91 | |
| 92 | static int ircc_cfg; |
| 93 | module_param(ircc_cfg, int, 0); |
| 94 | MODULE_PARM_DESC(ircc_cfg, "Configuration register base address"); |
| 95 | |
| 96 | static int ircc_transceiver; |
| 97 | module_param(ircc_transceiver, int, 0); |
| 98 | MODULE_PARM_DESC(ircc_transceiver, "Transceiver type"); |
| 99 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | /* Types */ |
| 101 | |
| 102 | struct smsc_transceiver { |
| 103 | char *name; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 104 | void (*set_for_speed)(int fir_base, u32 speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | int (*probe)(int fir_base); |
| 106 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | |
| 108 | struct smsc_chip { |
| 109 | char *name; |
| 110 | #if 0 |
| 111 | u8 type; |
| 112 | #endif |
| 113 | u16 flags; |
| 114 | u8 devid; |
| 115 | u8 rev; |
| 116 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | struct smsc_chip_address { |
| 119 | unsigned int cfg_base; |
| 120 | unsigned int type; |
| 121 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
| 123 | /* Private data for each instance */ |
| 124 | struct smsc_ircc_cb { |
| 125 | struct net_device *netdev; /* Yes! we are some kind of netdevice */ |
| 126 | struct net_device_stats stats; |
| 127 | struct irlap_cb *irlap; /* The link layer we are binded to */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | chipio_t io; /* IrDA controller information */ |
| 130 | iobuff_t tx_buff; /* Transmit buffer */ |
| 131 | iobuff_t rx_buff; /* Receive buffer */ |
| 132 | dma_addr_t tx_buff_dma; |
| 133 | dma_addr_t rx_buff_dma; |
| 134 | |
| 135 | struct qos_info qos; /* QoS capabilities for this device */ |
| 136 | |
| 137 | spinlock_t lock; /* For serializing operations */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | __u32 new_speed; |
| 140 | __u32 flags; /* Interface flags */ |
| 141 | |
| 142 | int tx_buff_offsets[10]; /* Offsets between frames in tx_buff */ |
| 143 | int tx_len; /* Number of frames in tx_buff */ |
| 144 | |
| 145 | int transceiver; |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 146 | struct platform_device *pldev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | }; |
| 148 | |
| 149 | /* Constants */ |
| 150 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 151 | #define SMSC_IRCC2_DRIVER_NAME "smsc-ircc2" |
| 152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED 9600 |
| 154 | #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER 1 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 155 | #define SMSC_IRCC2_C_NET_TIMEOUT 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | #define SMSC_IRCC2_C_SIR_STOP 0 |
| 157 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 158 | static const char *driver_name = SMSC_IRCC2_DRIVER_NAME; |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | /* Prototypes */ |
| 161 | |
| 162 | static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq); |
| 163 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base); |
| 164 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq); |
| 165 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self); |
| 166 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self); |
| 167 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 168 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self); |
| 169 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self); |
| 171 | static int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev); |
| 172 | static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev); |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 173 | static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs); |
| 174 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame^] | 175 | static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed); |
| 176 | static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, u32 speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs); |
| 178 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev); |
| 179 | static void smsc_ircc_sir_start(struct smsc_ircc_cb *self); |
| 180 | #if SMSC_IRCC2_C_SIR_STOP |
| 181 | static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self); |
| 182 | #endif |
| 183 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self); |
| 184 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); |
| 185 | static int smsc_ircc_net_open(struct net_device *dev); |
| 186 | static int smsc_ircc_net_close(struct net_device *dev); |
| 187 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 188 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 189 | static void smsc_ircc_timeout(struct net_device *dev); |
| 190 | #endif |
| 191 | static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self); |
| 193 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self); |
| 194 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed); |
| 195 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self); |
| 196 | |
| 197 | /* Probing */ |
| 198 | static int __init smsc_ircc_look_for_chips(void); |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 199 | static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type); |
| 200 | static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type); |
| 201 | static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | static int __init smsc_superio_fdc(unsigned short cfg_base); |
| 203 | static int __init smsc_superio_lpc(unsigned short cfg_base); |
| 204 | |
| 205 | /* Transceivers specific functions */ |
| 206 | |
| 207 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed); |
| 208 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base); |
| 209 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed); |
| 210 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base); |
| 211 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed); |
| 212 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base); |
| 213 | |
| 214 | /* Power Management */ |
| 215 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 216 | static int smsc_ircc_suspend(struct device *dev, pm_message_t state, u32 level); |
| 217 | static int smsc_ircc_resume(struct device *dev, u32 level); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 219 | static struct device_driver smsc_ircc_driver = { |
| 220 | .name = SMSC_IRCC2_DRIVER_NAME, |
| 221 | .bus = &platform_bus_type, |
| 222 | .suspend = smsc_ircc_suspend, |
| 223 | .resume = smsc_ircc_resume, |
| 224 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
| 226 | /* Transceivers for SMSC-ircc */ |
| 227 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 228 | static struct smsc_transceiver smsc_transceivers[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 230 | { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 }, |
| 231 | { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select }, |
| 232 | { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc }, |
| 233 | { NULL, NULL } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | }; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 235 | #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | /* SMC SuperIO chipsets definitions */ |
| 238 | |
| 239 | #define KEY55_1 0 /* SuperIO Configuration mode with Key <0x55> */ |
| 240 | #define KEY55_2 1 /* SuperIO Configuration mode with Key <0x55,0x55> */ |
| 241 | #define NoIRDA 2 /* SuperIO Chip has no IRDA Port */ |
| 242 | #define SIR 0 /* SuperIO Chip has only slow IRDA */ |
| 243 | #define FIR 4 /* SuperIO Chip has fast IRDA */ |
| 244 | #define SERx4 8 /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */ |
| 245 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 246 | static struct smsc_chip __initdata fdc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | { |
| 248 | /* Base address 0x3f0 or 0x370 */ |
| 249 | { "37C44", KEY55_1|NoIRDA, 0x00, 0x00 }, /* This chip cannot be detected */ |
| 250 | { "37C665GT", KEY55_2|NoIRDA, 0x65, 0x01 }, |
| 251 | { "37C665GT", KEY55_2|NoIRDA, 0x66, 0x01 }, |
| 252 | { "37C669", KEY55_2|SIR|SERx4, 0x03, 0x02 }, |
| 253 | { "37C669", KEY55_2|SIR|SERx4, 0x04, 0x02 }, /* ID? */ |
| 254 | { "37C78", KEY55_2|NoIRDA, 0x78, 0x00 }, |
| 255 | { "37N769", KEY55_1|FIR|SERx4, 0x28, 0x00 }, |
| 256 | { "37N869", KEY55_1|FIR|SERx4, 0x29, 0x00 }, |
| 257 | { NULL } |
| 258 | }; |
| 259 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 260 | static struct smsc_chip __initdata fdc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | { |
| 262 | /* Base address 0x3f0 or 0x370 */ |
| 263 | { "37B72X", KEY55_1|SIR|SERx4, 0x4c, 0x00 }, |
| 264 | { "37B77X", KEY55_1|SIR|SERx4, 0x43, 0x00 }, |
| 265 | { "37B78X", KEY55_1|SIR|SERx4, 0x44, 0x00 }, |
| 266 | { "37B80X", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 267 | { "37C67X", KEY55_1|FIR|SERx4, 0x40, 0x00 }, |
| 268 | { "37C93X", KEY55_2|SIR|SERx4, 0x02, 0x01 }, |
| 269 | { "37C93XAPM", KEY55_1|SIR|SERx4, 0x30, 0x01 }, |
| 270 | { "37C93XFR", KEY55_2|FIR|SERx4, 0x03, 0x01 }, |
| 271 | { "37M707", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 272 | { "37M81X", KEY55_1|SIR|SERx4, 0x4d, 0x00 }, |
| 273 | { "37N958FR", KEY55_1|FIR|SERx4, 0x09, 0x04 }, |
| 274 | { "37N971", KEY55_1|FIR|SERx4, 0x0a, 0x00 }, |
| 275 | { "37N972", KEY55_1|FIR|SERx4, 0x0b, 0x00 }, |
| 276 | { NULL } |
| 277 | }; |
| 278 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 279 | static struct smsc_chip __initdata lpc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | { |
| 281 | /* Base address 0x2E or 0x4E */ |
| 282 | { "47N227", KEY55_1|FIR|SERx4, 0x5a, 0x00 }, |
| 283 | { "47N267", KEY55_1|FIR|SERx4, 0x5e, 0x00 }, |
| 284 | { NULL } |
| 285 | }; |
| 286 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 287 | static struct smsc_chip __initdata lpc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | { |
| 289 | /* Base address 0x2E or 0x4E */ |
| 290 | { "47B27X", KEY55_1|SIR|SERx4, 0x51, 0x00 }, |
| 291 | { "47B37X", KEY55_1|SIR|SERx4, 0x52, 0x00 }, |
| 292 | { "47M10X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 293 | { "47M120", KEY55_1|NoIRDA|SERx4, 0x5c, 0x00 }, |
| 294 | { "47M13X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 295 | { "47M14X", KEY55_1|SIR|SERx4, 0x5f, 0x00 }, |
| 296 | { "47N252", KEY55_1|FIR|SERx4, 0x0e, 0x00 }, |
| 297 | { "47S42X", KEY55_1|SIR|SERx4, 0x57, 0x00 }, |
| 298 | { NULL } |
| 299 | }; |
| 300 | |
| 301 | #define SMSCSIO_TYPE_FDC 1 |
| 302 | #define SMSCSIO_TYPE_LPC 2 |
| 303 | #define SMSCSIO_TYPE_FLAT 4 |
| 304 | #define SMSCSIO_TYPE_PAGED 8 |
| 305 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 306 | static struct smsc_chip_address __initdata possible_addresses[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 308 | { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 309 | { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 310 | { 0xe0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 311 | { 0x2e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 312 | { 0x4e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 313 | { 0, 0 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | }; |
| 315 | |
| 316 | /* Globals */ |
| 317 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 318 | static struct smsc_ircc_cb *dev_self[] = { NULL, NULL }; |
| 319 | static unsigned short dev_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
| 321 | static inline void register_bank(int iobase, int bank) |
| 322 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 323 | outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)), |
| 324 | iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | |
| 328 | /******************************************************************************* |
| 329 | * |
| 330 | * |
| 331 | * SMSC-ircc stuff |
| 332 | * |
| 333 | * |
| 334 | *******************************************************************************/ |
| 335 | |
| 336 | /* |
| 337 | * Function smsc_ircc_init () |
| 338 | * |
| 339 | * Initialize chip. Just try to find out how many chips we are dealing with |
| 340 | * and where they are |
| 341 | */ |
| 342 | static int __init smsc_ircc_init(void) |
| 343 | { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 344 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 347 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 348 | ret = driver_register(&smsc_ircc_driver); |
| 349 | if (ret) { |
| 350 | IRDA_ERROR("%s, Can't register driver!\n", driver_name); |
| 351 | return ret; |
| 352 | } |
| 353 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 354 | dev_count = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 355 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 356 | if (ircc_fir > 0 && ircc_sir > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir); |
| 358 | IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir); |
| 359 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 360 | if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq)) |
| 361 | ret = -ENODEV; |
| 362 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 364 | /* try user provided configuration register base address */ |
| 365 | if (ircc_cfg > 0) { |
| 366 | IRDA_MESSAGE(" Overriding configuration address " |
| 367 | "0x%04x\n", ircc_cfg); |
| 368 | if (!smsc_superio_fdc(ircc_cfg)) |
| 369 | ret = 0; |
| 370 | if (!smsc_superio_lpc(ircc_cfg)) |
| 371 | ret = 0; |
| 372 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 374 | if (smsc_ircc_look_for_chips() > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | ret = 0; |
| 376 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 377 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 378 | if (ret) |
| 379 | driver_unregister(&smsc_ircc_driver); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | return ret; |
| 382 | } |
| 383 | |
| 384 | /* |
| 385 | * Function smsc_ircc_open (firbase, sirbase, dma, irq) |
| 386 | * |
| 387 | * Try to open driver instance |
| 388 | * |
| 389 | */ |
| 390 | static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq) |
| 391 | { |
| 392 | struct smsc_ircc_cb *self; |
| 393 | struct net_device *dev; |
| 394 | int err; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 395 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 397 | |
| 398 | err = smsc_ircc_present(fir_base, sir_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 399 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | goto err_out; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 401 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | err = -ENOMEM; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 403 | if (dev_count >= ARRAY_SIZE(dev_self)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__); |
| 405 | goto err_out1; |
| 406 | } |
| 407 | |
| 408 | /* |
| 409 | * Allocate new instance of the driver |
| 410 | */ |
| 411 | dev = alloc_irdadev(sizeof(struct smsc_ircc_cb)); |
| 412 | if (!dev) { |
| 413 | IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__); |
| 414 | goto err_out1; |
| 415 | } |
| 416 | |
| 417 | SET_MODULE_OWNER(dev); |
| 418 | |
| 419 | dev->hard_start_xmit = smsc_ircc_hard_xmit_sir; |
| 420 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 421 | dev->tx_timeout = smsc_ircc_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 422 | dev->watchdog_timeo = HZ * 2; /* Allow enough time for speed change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | #endif |
| 424 | dev->open = smsc_ircc_net_open; |
| 425 | dev->stop = smsc_ircc_net_close; |
| 426 | dev->do_ioctl = smsc_ircc_net_ioctl; |
| 427 | dev->get_stats = smsc_ircc_net_get_stats; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 428 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 429 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | self->netdev = dev; |
| 431 | |
| 432 | /* Make ifconfig display some details */ |
| 433 | dev->base_addr = self->io.fir_base = fir_base; |
| 434 | dev->irq = self->io.irq = irq; |
| 435 | |
| 436 | /* Need to store self somewhere */ |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 437 | dev_self[dev_count] = self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | spin_lock_init(&self->lock); |
| 439 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 440 | self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE; |
| 442 | |
| 443 | self->rx_buff.head = |
| 444 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 445 | &self->rx_buff_dma, GFP_KERNEL); |
| 446 | if (self->rx_buff.head == NULL) { |
| 447 | IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n", |
| 448 | driver_name); |
| 449 | goto err_out2; |
| 450 | } |
| 451 | |
| 452 | self->tx_buff.head = |
| 453 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 454 | &self->tx_buff_dma, GFP_KERNEL); |
| 455 | if (self->tx_buff.head == NULL) { |
| 456 | IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n", |
| 457 | driver_name); |
| 458 | goto err_out3; |
| 459 | } |
| 460 | |
| 461 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 462 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 463 | |
| 464 | self->rx_buff.in_frame = FALSE; |
| 465 | self->rx_buff.state = OUTSIDE_FRAME; |
| 466 | self->tx_buff.data = self->tx_buff.head; |
| 467 | self->rx_buff.data = self->rx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | smsc_ircc_setup_qos(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | smsc_ircc_init_chip(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 472 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 473 | if (ircc_transceiver > 0 && |
| 474 | ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | self->transceiver = ircc_transceiver; |
| 476 | else |
| 477 | smsc_ircc_probe_transceiver(self); |
| 478 | |
| 479 | err = register_netdev(self->netdev); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 480 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | IRDA_ERROR("%s, Network device registration failed!\n", |
| 482 | driver_name); |
| 483 | goto err_out4; |
| 484 | } |
| 485 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 486 | self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME, |
| 487 | dev_count, NULL, 0); |
| 488 | if (IS_ERR(self->pldev)) { |
| 489 | err = PTR_ERR(self->pldev); |
| 490 | goto err_out5; |
| 491 | } |
| 492 | dev_set_drvdata(&self->pldev->dev, self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 495 | dev_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | |
| 497 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 498 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 499 | err_out5: |
| 500 | unregister_netdev(self->netdev); |
| 501 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | err_out4: |
| 503 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 504 | self->tx_buff.head, self->tx_buff_dma); |
| 505 | err_out3: |
| 506 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 507 | self->rx_buff.head, self->rx_buff_dma); |
| 508 | err_out2: |
| 509 | free_netdev(self->netdev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 510 | dev_self[dev_count] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | err_out1: |
| 512 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 513 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 514 | err_out: |
| 515 | return err; |
| 516 | } |
| 517 | |
| 518 | /* |
| 519 | * Function smsc_ircc_present(fir_base, sir_base) |
| 520 | * |
| 521 | * Check the smsc-ircc chip presence |
| 522 | * |
| 523 | */ |
| 524 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base) |
| 525 | { |
| 526 | unsigned char low, high, chip, config, dma, irq, version; |
| 527 | |
| 528 | if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT, |
| 529 | driver_name)) { |
| 530 | IRDA_WARNING("%s: can't get fir_base of 0x%03x\n", |
| 531 | __FUNCTION__, fir_base); |
| 532 | goto out1; |
| 533 | } |
| 534 | |
| 535 | if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT, |
| 536 | driver_name)) { |
| 537 | IRDA_WARNING("%s: can't get sir_base of 0x%03x\n", |
| 538 | __FUNCTION__, sir_base); |
| 539 | goto out2; |
| 540 | } |
| 541 | |
| 542 | register_bank(fir_base, 3); |
| 543 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 544 | high = inb(fir_base + IRCC_ID_HIGH); |
| 545 | low = inb(fir_base + IRCC_ID_LOW); |
| 546 | chip = inb(fir_base + IRCC_CHIP_ID); |
| 547 | version = inb(fir_base + IRCC_VERSION); |
| 548 | config = inb(fir_base + IRCC_INTERFACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | dma = config & IRCC_INTERFACE_DMA_MASK; |
| 550 | irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
| 551 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 552 | if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 553 | IRDA_WARNING("%s(), addr 0x%04x - no device found!\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | __FUNCTION__, fir_base); |
| 555 | goto out3; |
| 556 | } |
| 557 | IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, " |
| 558 | "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n", |
| 559 | chip & 0x0f, version, fir_base, sir_base, dma, irq); |
| 560 | |
| 561 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 562 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | out3: |
| 564 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 565 | out2: |
| 566 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 567 | out1: |
| 568 | return -ENODEV; |
| 569 | } |
| 570 | |
| 571 | /* |
| 572 | * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq) |
| 573 | * |
| 574 | * Setup I/O |
| 575 | * |
| 576 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 577 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, |
| 578 | unsigned int fir_base, unsigned int sir_base, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | u8 dma, u8 irq) |
| 580 | { |
| 581 | unsigned char config, chip_dma, chip_irq; |
| 582 | |
| 583 | register_bank(fir_base, 3); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 584 | config = inb(fir_base + IRCC_INTERFACE); |
| 585 | chip_dma = config & IRCC_INTERFACE_DMA_MASK; |
| 586 | chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | |
| 588 | self->io.fir_base = fir_base; |
| 589 | self->io.sir_base = sir_base; |
| 590 | self->io.fir_ext = SMSC_IRCC2_FIR_CHIP_IO_EXTENT; |
| 591 | self->io.sir_ext = SMSC_IRCC2_SIR_CHIP_IO_EXTENT; |
| 592 | self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE; |
| 593 | self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED; |
| 594 | |
| 595 | if (irq < 255) { |
| 596 | if (irq != chip_irq) |
| 597 | IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n", |
| 598 | driver_name, chip_irq, irq); |
| 599 | self->io.irq = irq; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 600 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | self->io.irq = chip_irq; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | if (dma < 255) { |
| 604 | if (dma != chip_dma) |
| 605 | IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n", |
| 606 | driver_name, chip_dma, dma); |
| 607 | self->io.dma = dma; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 608 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | self->io.dma = chip_dma; |
| 610 | |
| 611 | } |
| 612 | |
| 613 | /* |
| 614 | * Function smsc_ircc_setup_qos(self) |
| 615 | * |
| 616 | * Setup qos |
| 617 | * |
| 618 | */ |
| 619 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self) |
| 620 | { |
| 621 | /* Initialize QoS for this device */ |
| 622 | irda_init_max_qos_capabilies(&self->qos); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 623 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 625 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); |
| 626 | |
| 627 | self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME; |
| 628 | self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE; |
| 629 | irda_qos_bits_to_value(&self->qos); |
| 630 | } |
| 631 | |
| 632 | /* |
| 633 | * Function smsc_ircc_init_chip(self) |
| 634 | * |
| 635 | * Init chip |
| 636 | * |
| 637 | */ |
| 638 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self) |
| 639 | { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 640 | int iobase, ir_mode, ctrl, fast; |
| 641 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 642 | IRDA_ASSERT(self != NULL, return;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 644 | iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | ir_mode = IRCC_CFGA_IRDA_SIR_A; |
| 646 | ctrl = 0; |
| 647 | fast = 0; |
| 648 | |
| 649 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 650 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 651 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
| 653 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 654 | outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | ir_mode), |
| 655 | iobase + IRCC_SCE_CFGA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
| 657 | #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 658 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 659 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 660 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 661 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 662 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 663 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 664 | (void) inb(iobase + IRCC_FIFO_THRESHOLD); |
| 665 | outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 666 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 668 | outb((inb(iobase + IRCC_CONTROL) & 0x30) | ctrl, iobase + IRCC_CONTROL); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 669 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 671 | outb(fast, iobase + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
| 673 | smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | /* Power on device */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 676 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | /* |
| 680 | * Function smsc_ircc_net_ioctl (dev, rq, cmd) |
| 681 | * |
| 682 | * Process IOCTL commands for this device |
| 683 | * |
| 684 | */ |
| 685 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 686 | { |
| 687 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 688 | struct smsc_ircc_cb *self; |
| 689 | unsigned long flags; |
| 690 | int ret = 0; |
| 691 | |
| 692 | IRDA_ASSERT(dev != NULL, return -1;); |
| 693 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 694 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | |
| 696 | IRDA_ASSERT(self != NULL, return -1;); |
| 697 | |
| 698 | IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __FUNCTION__, dev->name, cmd); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 699 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | switch (cmd) { |
| 701 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 702 | if (!capable(CAP_NET_ADMIN)) |
| 703 | ret = -EPERM; |
| 704 | else { |
| 705 | /* Make sure we are the only one touching |
| 706 | * self->io.speed and the hardware - Jean II */ |
| 707 | spin_lock_irqsave(&self->lock, flags); |
| 708 | smsc_ircc_change_speed(self, irq->ifr_baudrate); |
| 709 | spin_unlock_irqrestore(&self->lock, flags); |
| 710 | } |
| 711 | break; |
| 712 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 713 | if (!capable(CAP_NET_ADMIN)) { |
| 714 | ret = -EPERM; |
| 715 | break; |
| 716 | } |
| 717 | |
| 718 | irda_device_set_media_busy(self->netdev, TRUE); |
| 719 | break; |
| 720 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 721 | irq->ifr_receiving = smsc_ircc_is_receiving(self); |
| 722 | break; |
| 723 | #if 0 |
| 724 | case SIOCSDTRRTS: |
| 725 | if (!capable(CAP_NET_ADMIN)) { |
| 726 | ret = -EPERM; |
| 727 | break; |
| 728 | } |
| 729 | smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts); |
| 730 | break; |
| 731 | #endif |
| 732 | default: |
| 733 | ret = -EOPNOTSUPP; |
| 734 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 735 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | return ret; |
| 737 | } |
| 738 | |
| 739 | static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev) |
| 740 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 741 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 742 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | return &self->stats; |
| 744 | } |
| 745 | |
| 746 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 747 | /* |
| 748 | * Function smsc_ircc_timeout (struct net_device *dev) |
| 749 | * |
| 750 | * The networking timeout management. |
| 751 | * |
| 752 | */ |
| 753 | |
| 754 | static void smsc_ircc_timeout(struct net_device *dev) |
| 755 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 756 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | unsigned long flags; |
| 758 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n", |
| 760 | dev->name, self->io.speed); |
| 761 | spin_lock_irqsave(&self->lock, flags); |
| 762 | smsc_ircc_sir_start(self); |
| 763 | smsc_ircc_change_speed(self, self->io.speed); |
| 764 | dev->trans_start = jiffies; |
| 765 | netif_wake_queue(dev); |
| 766 | spin_unlock_irqrestore(&self->lock, flags); |
| 767 | } |
| 768 | #endif |
| 769 | |
| 770 | /* |
| 771 | * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev) |
| 772 | * |
| 773 | * Transmits the current frame until FIFO is full, then |
| 774 | * waits until the next transmit interrupt, and continues until the |
| 775 | * frame is transmitted. |
| 776 | */ |
| 777 | int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev) |
| 778 | { |
| 779 | struct smsc_ircc_cb *self; |
| 780 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | s32 speed; |
| 782 | |
| 783 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 784 | |
| 785 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 786 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 787 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | IRDA_ASSERT(self != NULL, return 0;); |
| 789 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 791 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 793 | spin_lock_irqsave(&self->lock, flags); |
| 794 | |
| 795 | /* Check if we need to change the speed */ |
| 796 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 797 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | /* Check for empty frame */ |
| 799 | if (!skb->len) { |
| 800 | /* |
| 801 | * We send frames one by one in SIR mode (no |
| 802 | * pipelining), so at this point, if we were sending |
| 803 | * a previous frame, we just received the interrupt |
| 804 | * telling us it is finished (UART_IIR_THRI). |
| 805 | * Therefore, waiting for the transmitter to really |
| 806 | * finish draining the fifo won't take too long. |
| 807 | * And the interrupt handler is not expected to run. |
| 808 | * - Jean II */ |
| 809 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 810 | smsc_ircc_change_speed(self, speed); |
| 811 | spin_unlock_irqrestore(&self->lock, flags); |
| 812 | dev_kfree_skb(skb); |
| 813 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 815 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | } |
| 817 | |
| 818 | /* Init tx buffer */ |
| 819 | self->tx_buff.data = self->tx_buff.head; |
| 820 | |
| 821 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 822 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | self->tx_buff.truesize); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | self->stats.tx_bytes += self->tx_buff.len; |
| 826 | |
| 827 | /* Turn on transmit finished interrupt. Will fire immediately! */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 828 | outb(UART_IER_THRI, self->io.sir_base + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | |
| 830 | spin_unlock_irqrestore(&self->lock, flags); |
| 831 | |
| 832 | dev_kfree_skb(skb); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | return 0; |
| 835 | } |
| 836 | |
| 837 | /* |
| 838 | * Function smsc_ircc_set_fir_speed (self, baud) |
| 839 | * |
| 840 | * Change the speed of the device |
| 841 | * |
| 842 | */ |
| 843 | static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed) |
| 844 | { |
| 845 | int fir_base, ir_mode, ctrl, fast; |
| 846 | |
| 847 | IRDA_ASSERT(self != NULL, return;); |
| 848 | fir_base = self->io.fir_base; |
| 849 | |
| 850 | self->io.speed = speed; |
| 851 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 852 | switch (speed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | default: |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 854 | case 576000: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 856 | ctrl = IRCC_CRC; |
| 857 | fast = 0; |
| 858 | IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__); |
| 859 | break; |
| 860 | case 1152000: |
| 861 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 862 | ctrl = IRCC_1152 | IRCC_CRC; |
| 863 | fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA; |
| 864 | IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", |
| 865 | __FUNCTION__); |
| 866 | break; |
| 867 | case 4000000: |
| 868 | ir_mode = IRCC_CFGA_IRDA_4PPM; |
| 869 | ctrl = IRCC_CRC; |
| 870 | fast = IRCC_LCR_A_FAST; |
| 871 | IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", |
| 872 | __FUNCTION__); |
| 873 | break; |
| 874 | } |
| 875 | #if 0 |
| 876 | Now in tranceiver! |
| 877 | /* This causes an interrupt */ |
| 878 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 879 | outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast, fir_base + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 883 | outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | ir_mode), fir_base + IRCC_SCE_CFGA); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 886 | outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | } |
| 888 | |
| 889 | /* |
| 890 | * Function smsc_ircc_fir_start(self) |
| 891 | * |
| 892 | * Change the speed of the device |
| 893 | * |
| 894 | */ |
| 895 | static void smsc_ircc_fir_start(struct smsc_ircc_cb *self) |
| 896 | { |
| 897 | struct net_device *dev; |
| 898 | int fir_base; |
| 899 | |
| 900 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 901 | |
| 902 | IRDA_ASSERT(self != NULL, return;); |
| 903 | dev = self->netdev; |
| 904 | IRDA_ASSERT(dev != NULL, return;); |
| 905 | |
| 906 | fir_base = self->io.fir_base; |
| 907 | |
| 908 | /* Reset everything */ |
| 909 | |
| 910 | /* Install FIR transmit handler */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 911 | dev->hard_start_xmit = smsc_ircc_hard_xmit_fir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
| 913 | /* Clear FIFO */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 914 | outb(inb(fir_base + IRCC_LCR_A) | IRCC_LCR_A_FIFO_RESET, fir_base + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | |
| 916 | /* Enable interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 917 | /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | |
| 919 | register_bank(fir_base, 1); |
| 920 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 921 | /* Select the TX/RX interface */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 923 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 924 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 925 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 926 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 927 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 928 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 929 | (void) inb(fir_base + IRCC_FIFO_THRESHOLD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | |
| 931 | /* Enable SCE interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 932 | outb(0, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 934 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER); |
| 935 | outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | } |
| 937 | |
| 938 | /* |
| 939 | * Function smsc_ircc_fir_stop(self, baud) |
| 940 | * |
| 941 | * Change the speed of the device |
| 942 | * |
| 943 | */ |
| 944 | static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self) |
| 945 | { |
| 946 | int fir_base; |
| 947 | |
| 948 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | IRDA_ASSERT(self != NULL, return;); |
| 951 | |
| 952 | fir_base = self->io.fir_base; |
| 953 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 954 | /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/ |
| 955 | outb(inb(fir_base + IRCC_LCR_B) & IRCC_LCR_B_SIP_ENABLE, fir_base + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | |
| 959 | /* |
| 960 | * Function smsc_ircc_change_speed(self, baud) |
| 961 | * |
| 962 | * Change the speed of the device |
| 963 | * |
| 964 | * This function *must* be called with spinlock held, because it may |
| 965 | * be called from the irq handler. - Jean II |
| 966 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame^] | 967 | static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | int last_speed_was_sir; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 971 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__, speed); |
| 973 | |
| 974 | IRDA_ASSERT(self != NULL, return;); |
| 975 | dev = self->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | |
| 977 | last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED; |
| 978 | |
| 979 | #if 0 |
| 980 | /* Temp Hack */ |
| 981 | speed= 1152000; |
| 982 | self->io.speed = speed; |
| 983 | last_speed_was_sir = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 984 | smsc_ircc_fir_start(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 986 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 987 | if (self->io.speed == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | smsc_ircc_sir_start(self); |
| 989 | |
| 990 | #if 0 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 991 | if (!last_speed_was_sir) speed = self->io.speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | #endif |
| 993 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 994 | if (self->io.speed != speed) |
| 995 | smsc_ircc_set_transceiver_for_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | |
| 997 | self->io.speed = speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 998 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 999 | if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
| 1000 | if (!last_speed_was_sir) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | smsc_ircc_fir_stop(self); |
| 1002 | smsc_ircc_sir_start(self); |
| 1003 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1004 | smsc_ircc_set_sir_speed(self, speed); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1005 | } else { |
| 1006 | if (last_speed_was_sir) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1007 | #if SMSC_IRCC2_C_SIR_STOP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | smsc_ircc_sir_stop(self); |
| 1009 | #endif |
| 1010 | smsc_ircc_fir_start(self); |
| 1011 | } |
| 1012 | smsc_ircc_set_fir_speed(self, speed); |
| 1013 | |
| 1014 | #if 0 |
| 1015 | self->tx_buff.len = 10; |
| 1016 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1017 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1018 | smsc_ircc_dma_xmit(self, 4000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | #endif |
| 1020 | /* Be ready for incoming frames */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1021 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | netif_wake_queue(dev); |
| 1025 | } |
| 1026 | |
| 1027 | /* |
| 1028 | * Function smsc_ircc_set_sir_speed (self, speed) |
| 1029 | * |
| 1030 | * Set speed of IrDA port to specified baudrate |
| 1031 | * |
| 1032 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame^] | 1033 | void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, __u32 speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1035 | int iobase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | int fcr; /* FIFO control reg */ |
| 1037 | int lcr; /* Line control reg */ |
| 1038 | int divisor; |
| 1039 | |
| 1040 | IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__, speed); |
| 1041 | |
| 1042 | IRDA_ASSERT(self != NULL, return;); |
| 1043 | iobase = self->io.sir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1044 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | /* Update accounting for new speed */ |
| 1046 | self->io.speed = speed; |
| 1047 | |
| 1048 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1049 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1051 | divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1052 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | fcr = UART_FCR_ENABLE_FIFO; |
| 1054 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1055 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and |
| 1057 | * almost 1,7 ms at 19200 bps. At speeds above that we can just forget |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1058 | * about this timeout since it will always be fast enough. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1060 | fcr |= self->io.speed < 38400 ? |
| 1061 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | /* IrDA ports use 8N1 */ |
| 1064 | lcr = UART_LCR_WLEN8; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1065 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1066 | outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */ |
| 1067 | outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */ |
| 1068 | outb(divisor >> 8, iobase + UART_DLM); |
| 1069 | outb(lcr, iobase + UART_LCR); /* Set 8N1 */ |
| 1070 | outb(fcr, iobase + UART_FCR); /* Enable FIFO's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | |
| 1072 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1073 | outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | |
| 1075 | IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__, speed); |
| 1076 | } |
| 1077 | |
| 1078 | |
| 1079 | /* |
| 1080 | * Function smsc_ircc_hard_xmit_fir (skb, dev) |
| 1081 | * |
| 1082 | * Transmit the frame! |
| 1083 | * |
| 1084 | */ |
| 1085 | static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev) |
| 1086 | { |
| 1087 | struct smsc_ircc_cb *self; |
| 1088 | unsigned long flags; |
| 1089 | s32 speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | int mtt; |
| 1091 | |
| 1092 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1093 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | IRDA_ASSERT(self != NULL, return 0;); |
| 1095 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | netif_stop_queue(dev); |
| 1097 | |
| 1098 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 1099 | spin_lock_irqsave(&self->lock, flags); |
| 1100 | |
| 1101 | /* Check if we need to change the speed after this frame */ |
| 1102 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1103 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | /* Check for empty frame */ |
| 1105 | if (!skb->len) { |
| 1106 | /* Note : you should make sure that speed changes |
| 1107 | * are not going to corrupt any outgoing frame. |
| 1108 | * Look at nsc-ircc for the gory details - Jean II */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1109 | smsc_ircc_change_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | spin_unlock_irqrestore(&self->lock, flags); |
| 1111 | dev_kfree_skb(skb); |
| 1112 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1113 | } |
| 1114 | |
| 1115 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | memcpy(self->tx_buff.head, skb->data, skb->len); |
| 1119 | |
| 1120 | self->tx_buff.len = skb->len; |
| 1121 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1122 | |
| 1123 | mtt = irda_get_mtt(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | if (mtt) { |
| 1125 | int bofs; |
| 1126 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1127 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | * Compute how many BOFs (STA or PA's) we need to waste the |
| 1129 | * min turn time given the speed of the link. |
| 1130 | */ |
| 1131 | bofs = mtt * (self->io.speed / 1000) / 8000; |
| 1132 | if (bofs > 4095) |
| 1133 | bofs = 4095; |
| 1134 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1135 | smsc_ircc_dma_xmit(self, bofs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | } else { |
| 1137 | /* Transmit frame */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1138 | smsc_ircc_dma_xmit(self, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1140 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | spin_unlock_irqrestore(&self->lock, flags); |
| 1142 | dev_kfree_skb(skb); |
| 1143 | |
| 1144 | return 0; |
| 1145 | } |
| 1146 | |
| 1147 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1148 | * Function smsc_ircc_dma_xmit (self, bofs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | * |
| 1150 | * Transmit data using DMA |
| 1151 | * |
| 1152 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1153 | static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1155 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | u8 ctrl; |
| 1157 | |
| 1158 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1159 | #if 1 |
| 1160 | /* Disable Rx */ |
| 1161 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1162 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | #endif |
| 1164 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1165 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1166 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | |
| 1168 | self->io.direction = IO_XMIT; |
| 1169 | |
| 1170 | /* Set BOF additional count for generating the min turn time */ |
| 1171 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1172 | outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO); |
| 1173 | ctrl = inb(iobase + IRCC_CONTROL) & 0xf0; |
| 1174 | outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | |
| 1176 | /* Set max Tx frame size */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1177 | outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI); |
| 1178 | outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | |
| 1180 | /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1181 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | /* Enable burst mode chip Tx DMA */ |
| 1183 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1184 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1185 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | |
| 1187 | /* Setup DMA controller (must be done after enabling chip DMA) */ |
| 1188 | irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len, |
| 1189 | DMA_TX_MODE); |
| 1190 | |
| 1191 | /* Enable interrupt */ |
| 1192 | |
| 1193 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1194 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1195 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1196 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | /* Enable transmit */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1198 | outb(IRCC_LCR_B_SCE_TRANSMIT | IRCC_LCR_B_SIP_ENABLE, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | } |
| 1200 | |
| 1201 | /* |
| 1202 | * Function smsc_ircc_dma_xmit_complete (self) |
| 1203 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1204 | * The transfer of a frame in finished. This function will only be called |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | * by the interrupt handler |
| 1206 | * |
| 1207 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1208 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1210 | int iobase = self->io.fir_base; |
| 1211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1213 | #if 0 |
| 1214 | /* Disable Tx */ |
| 1215 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1216 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | #endif |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1218 | register_bank(iobase, 1); |
| 1219 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1220 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | |
| 1222 | /* Check for underrun! */ |
| 1223 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1224 | if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | self->stats.tx_errors++; |
| 1226 | self->stats.tx_fifo_errors++; |
| 1227 | |
| 1228 | /* Reset error condition */ |
| 1229 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1230 | outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER); |
| 1231 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | } else { |
| 1233 | self->stats.tx_packets++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1234 | self->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | } |
| 1236 | |
| 1237 | /* Check if it's time to change the speed */ |
| 1238 | if (self->new_speed) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1239 | smsc_ircc_change_speed(self, self->new_speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | self->new_speed = 0; |
| 1241 | } |
| 1242 | |
| 1243 | netif_wake_queue(self->netdev); |
| 1244 | } |
| 1245 | |
| 1246 | /* |
| 1247 | * Function smsc_ircc_dma_receive(self) |
| 1248 | * |
| 1249 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1250 | * if it starts to receive a frame. |
| 1251 | * |
| 1252 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1253 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1255 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | #if 0 |
| 1257 | /* Turn off chip DMA */ |
| 1258 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1259 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1260 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | /* Disable Tx */ |
| 1264 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1265 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | |
| 1267 | /* Turn off chip DMA */ |
| 1268 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1269 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1270 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | |
| 1272 | self->io.direction = IO_RECV; |
| 1273 | self->rx_buff.data = self->rx_buff.head; |
| 1274 | |
| 1275 | /* Set max Rx frame size */ |
| 1276 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1277 | outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI); |
| 1278 | outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | |
| 1280 | /* Setup DMA controller */ |
| 1281 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1282 | DMA_RX_MODE); |
| 1283 | |
| 1284 | /* Enable burst mode chip Rx DMA */ |
| 1285 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1286 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1287 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | |
| 1289 | /* Enable interrupt */ |
| 1290 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1291 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1292 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | |
| 1294 | /* Enable receiver */ |
| 1295 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1296 | outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1297 | iobase + IRCC_LCR_B); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | return 0; |
| 1300 | } |
| 1301 | |
| 1302 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1303 | * Function smsc_ircc_dma_receive_complete(self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | * |
| 1305 | * Finished with receiving frames |
| 1306 | * |
| 1307 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1308 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1309 | { |
| 1310 | struct sk_buff *skb; |
| 1311 | int len, msgcnt, lsr; |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1312 | int iobase = self->io.fir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1317 | #if 0 |
| 1318 | /* Disable Rx */ |
| 1319 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1320 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | #endif |
| 1322 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1323 | outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR); |
| 1324 | lsr= inb(iobase + IRCC_LSR); |
| 1325 | msgcnt = inb(iobase + IRCC_LCR_B) & 0x08; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | |
| 1327 | IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__, |
| 1328 | get_dma_residue(self->io.dma)); |
| 1329 | |
| 1330 | len = self->rx_buff.truesize - get_dma_residue(self->io.dma); |
| 1331 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1332 | /* Look for errors */ |
| 1333 | if (lsr & (IRCC_LSR_FRAME_ERROR | IRCC_LSR_CRC_ERROR | IRCC_LSR_SIZE_ERROR)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | self->stats.rx_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1335 | if (lsr & IRCC_LSR_FRAME_ERROR) |
| 1336 | self->stats.rx_frame_errors++; |
| 1337 | if (lsr & IRCC_LSR_CRC_ERROR) |
| 1338 | self->stats.rx_crc_errors++; |
| 1339 | if (lsr & IRCC_LSR_SIZE_ERROR) |
| 1340 | self->stats.rx_length_errors++; |
| 1341 | if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN)) |
| 1342 | self->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | return; |
| 1344 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1346 | /* Remove CRC */ |
| 1347 | len -= self->io.speed < 4000000 ? 2 : 4; |
| 1348 | |
| 1349 | if (len < 2 || len > 2050) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__, len); |
| 1351 | return; |
| 1352 | } |
| 1353 | IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__, msgcnt, len); |
| 1354 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1355 | skb = dev_alloc_skb(len + 1); |
| 1356 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | IRDA_WARNING("%s(), memory squeeze, dropping frame.\n", |
| 1358 | __FUNCTION__); |
| 1359 | return; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1360 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | /* Make sure IP header gets aligned */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1362 | skb_reserve(skb, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | |
| 1364 | memcpy(skb_put(skb, len), self->rx_buff.data, len); |
| 1365 | self->stats.rx_packets++; |
| 1366 | self->stats.rx_bytes += len; |
| 1367 | |
| 1368 | skb->dev = self->netdev; |
| 1369 | skb->mac.raw = skb->data; |
| 1370 | skb->protocol = htons(ETH_P_IRDA); |
| 1371 | netif_rx(skb); |
| 1372 | } |
| 1373 | |
| 1374 | /* |
| 1375 | * Function smsc_ircc_sir_receive (self) |
| 1376 | * |
| 1377 | * Receive one frame from the infrared port |
| 1378 | * |
| 1379 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1380 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | { |
| 1382 | int boguscount = 0; |
| 1383 | int iobase; |
| 1384 | |
| 1385 | IRDA_ASSERT(self != NULL, return;); |
| 1386 | |
| 1387 | iobase = self->io.sir_base; |
| 1388 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1389 | /* |
| 1390 | * Receive all characters in Rx FIFO, unwrap and unstuff them. |
| 1391 | * async_unwrap_char will deliver all found frames |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | */ |
| 1393 | do { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1394 | async_unwrap_char(self->netdev, &self->stats, &self->rx_buff, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1395 | inb(iobase + UART_RX)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | |
| 1397 | /* Make sure we don't stay here to long */ |
| 1398 | if (boguscount++ > 32) { |
| 1399 | IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__); |
| 1400 | break; |
| 1401 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1402 | } while (inb(iobase + UART_LSR) & UART_LSR_DR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | } |
| 1404 | |
| 1405 | |
| 1406 | /* |
| 1407 | * Function smsc_ircc_interrupt (irq, dev_id, regs) |
| 1408 | * |
| 1409 | * An interrupt from the chip has arrived. Time to do some work |
| 1410 | * |
| 1411 | */ |
| 1412 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 1413 | { |
| 1414 | struct net_device *dev = (struct net_device *) dev_id; |
| 1415 | struct smsc_ircc_cb *self; |
| 1416 | int iobase, iir, lcra, lsr; |
| 1417 | irqreturn_t ret = IRQ_NONE; |
| 1418 | |
| 1419 | if (dev == NULL) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1420 | printk(KERN_WARNING "%s: irq %d for unknown device.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | driver_name, irq); |
| 1422 | goto irq_ret; |
| 1423 | } |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1424 | |
| 1425 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | IRDA_ASSERT(self != NULL, return IRQ_NONE;); |
| 1427 | |
| 1428 | /* Serialise the interrupt handler in various CPUs, stop Tx path */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1429 | spin_lock(&self->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | |
| 1431 | /* Check if we should use the SIR interrupt handler */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1432 | if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | ret = smsc_ircc_interrupt_sir(dev); |
| 1434 | goto irq_ret_unlock; |
| 1435 | } |
| 1436 | |
| 1437 | iobase = self->io.fir_base; |
| 1438 | |
| 1439 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1440 | iir = inb(iobase + IRCC_IIR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1441 | if (iir == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | goto irq_ret_unlock; |
| 1443 | ret = IRQ_HANDLED; |
| 1444 | |
| 1445 | /* Disable interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1446 | outb(0, iobase + IRCC_IER); |
| 1447 | lcra = inb(iobase + IRCC_LCR_A); |
| 1448 | lsr = inb(iobase + IRCC_LSR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__, iir); |
| 1451 | |
| 1452 | if (iir & IRCC_IIR_EOM) { |
| 1453 | if (self->io.direction == IO_RECV) |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1454 | smsc_ircc_dma_receive_complete(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | else |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1456 | smsc_ircc_dma_xmit_complete(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1457 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1458 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | } |
| 1460 | |
| 1461 | if (iir & IRCC_IIR_ACTIVE_FRAME) { |
| 1462 | /*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/ |
| 1463 | } |
| 1464 | |
| 1465 | /* Enable interrupts again */ |
| 1466 | |
| 1467 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1468 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | |
| 1470 | irq_ret_unlock: |
| 1471 | spin_unlock(&self->lock); |
| 1472 | irq_ret: |
| 1473 | return ret; |
| 1474 | } |
| 1475 | |
| 1476 | /* |
| 1477 | * Function irport_interrupt_sir (irq, dev_id, regs) |
| 1478 | * |
| 1479 | * Interrupt handler for SIR modes |
| 1480 | */ |
| 1481 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev) |
| 1482 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1483 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | int boguscount = 0; |
| 1485 | int iobase; |
| 1486 | int iir, lsr; |
| 1487 | |
| 1488 | /* Already locked comming here in smsc_ircc_interrupt() */ |
| 1489 | /*spin_lock(&self->lock);*/ |
| 1490 | |
| 1491 | iobase = self->io.sir_base; |
| 1492 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1493 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | if (iir == 0) |
| 1495 | return IRQ_NONE; |
| 1496 | while (iir) { |
| 1497 | /* Clear interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1498 | lsr = inb(iobase + UART_LSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1500 | IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | __FUNCTION__, iir, lsr, iobase); |
| 1502 | |
| 1503 | switch (iir) { |
| 1504 | case UART_IIR_RLSI: |
| 1505 | IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__); |
| 1506 | break; |
| 1507 | case UART_IIR_RDI: |
| 1508 | /* Receive interrupt */ |
| 1509 | smsc_ircc_sir_receive(self); |
| 1510 | break; |
| 1511 | case UART_IIR_THRI: |
| 1512 | if (lsr & UART_LSR_THRE) |
| 1513 | /* Transmitter ready for data */ |
| 1514 | smsc_ircc_sir_write_wakeup(self); |
| 1515 | break; |
| 1516 | default: |
| 1517 | IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", |
| 1518 | __FUNCTION__, iir); |
| 1519 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1520 | } |
| 1521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | /* Make sure we don't stay here to long */ |
| 1523 | if (boguscount++ > 100) |
| 1524 | break; |
| 1525 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1526 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | } |
| 1528 | /*spin_unlock(&self->lock);*/ |
| 1529 | return IRQ_HANDLED; |
| 1530 | } |
| 1531 | |
| 1532 | |
| 1533 | #if 0 /* unused */ |
| 1534 | /* |
| 1535 | * Function ircc_is_receiving (self) |
| 1536 | * |
| 1537 | * Return TRUE is we are currently receiving a frame |
| 1538 | * |
| 1539 | */ |
| 1540 | static int ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1541 | { |
| 1542 | int status = FALSE; |
| 1543 | /* int iobase; */ |
| 1544 | |
| 1545 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1546 | |
| 1547 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 1548 | |
| 1549 | IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__, |
| 1550 | get_dma_residue(self->io.dma)); |
| 1551 | |
| 1552 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1553 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | return status; |
| 1555 | } |
| 1556 | #endif /* unused */ |
| 1557 | |
| 1558 | |
| 1559 | /* |
| 1560 | * Function smsc_ircc_net_open (dev) |
| 1561 | * |
| 1562 | * Start the device |
| 1563 | * |
| 1564 | */ |
| 1565 | static int smsc_ircc_net_open(struct net_device *dev) |
| 1566 | { |
| 1567 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1568 | char hwname[16]; |
| 1569 | unsigned long flags; |
| 1570 | |
| 1571 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1572 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1574 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1576 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1577 | if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | (void *) dev)) { |
| 1579 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n", |
| 1580 | __FUNCTION__, self->io.irq); |
| 1581 | return -EAGAIN; |
| 1582 | } |
| 1583 | |
| 1584 | spin_lock_irqsave(&self->lock, flags); |
| 1585 | /*smsc_ircc_sir_start(self);*/ |
| 1586 | self->io.speed = 0; |
| 1587 | smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
| 1588 | spin_unlock_irqrestore(&self->lock, flags); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | /* Give self a hardware name */ |
| 1591 | /* It would be cool to offer the chip revision here - Jean II */ |
| 1592 | sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base); |
| 1593 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1594 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | * Open new IrLAP layer instance, now that everything should be |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1596 | * initialized properly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | */ |
| 1598 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 1599 | |
| 1600 | /* |
| 1601 | * Always allocate the DMA channel after the IRQ, |
| 1602 | * and clean up on failure. |
| 1603 | */ |
| 1604 | if (request_dma(self->io.dma, dev->name)) { |
| 1605 | smsc_ircc_net_close(dev); |
| 1606 | |
| 1607 | IRDA_WARNING("%s(), unable to allocate DMA=%d\n", |
| 1608 | __FUNCTION__, self->io.dma); |
| 1609 | return -EAGAIN; |
| 1610 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1611 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1612 | netif_start_queue(dev); |
| 1613 | |
| 1614 | return 0; |
| 1615 | } |
| 1616 | |
| 1617 | /* |
| 1618 | * Function smsc_ircc_net_close (dev) |
| 1619 | * |
| 1620 | * Stop the device |
| 1621 | * |
| 1622 | */ |
| 1623 | static int smsc_ircc_net_close(struct net_device *dev) |
| 1624 | { |
| 1625 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | |
| 1627 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1628 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1630 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1632 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | /* Stop device */ |
| 1634 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1635 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | /* Stop and remove instance of IrLAP */ |
| 1637 | if (self->irlap) |
| 1638 | irlap_close(self->irlap); |
| 1639 | self->irlap = NULL; |
| 1640 | |
| 1641 | free_irq(self->io.irq, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | disable_dma(self->io.dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | free_dma(self->io.dma); |
| 1644 | |
| 1645 | return 0; |
| 1646 | } |
| 1647 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1648 | static int smsc_ircc_suspend(struct device *dev, pm_message_t state, u32 level) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1650 | struct smsc_ircc_cb *self = dev_get_drvdata(dev); |
| 1651 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | IRDA_MESSAGE("%s, Suspending\n", driver_name); |
| 1653 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1654 | if (level == SUSPEND_DISABLE && !self->io.suspended) { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1655 | smsc_ircc_net_close(self->netdev); |
| 1656 | self->io.suspended = 1; |
| 1657 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1658 | |
| 1659 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | } |
| 1661 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1662 | static int smsc_ircc_resume(struct device *dev, u32 level) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1664 | struct smsc_ircc_cb *self = dev_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1666 | if (level == RESUME_ENABLE && self->io.suspended) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1668 | smsc_ircc_net_open(self->netdev); |
| 1669 | self->io.suspended = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1670 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1671 | IRDA_MESSAGE("%s, Waking up\n", driver_name); |
| 1672 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1673 | return 0; |
| 1674 | } |
| 1675 | |
| 1676 | /* |
| 1677 | * Function smsc_ircc_close (self) |
| 1678 | * |
| 1679 | * Close driver instance |
| 1680 | * |
| 1681 | */ |
| 1682 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self) |
| 1683 | { |
| 1684 | int iobase; |
| 1685 | unsigned long flags; |
| 1686 | |
| 1687 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1688 | |
| 1689 | IRDA_ASSERT(self != NULL, return -1;); |
| 1690 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1691 | platform_device_unregister(self->pldev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | |
| 1693 | /* Remove netdevice */ |
| 1694 | unregister_netdev(self->netdev); |
| 1695 | |
| 1696 | /* Make sure the irq handler is not exectuting */ |
| 1697 | spin_lock_irqsave(&self->lock, flags); |
| 1698 | |
| 1699 | /* Stop interrupts */ |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1700 | iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1702 | outb(0, iobase + IRCC_IER); |
| 1703 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 1704 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | #if 0 |
| 1706 | /* Reset to SIR mode */ |
| 1707 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1708 | outb(IRCC_CFGA_IRDA_SIR_A|IRCC_CFGA_TX_POLARITY, iobase + IRCC_SCE_CFGA); |
| 1709 | outb(IRCC_CFGB_IR, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | #endif |
| 1711 | spin_unlock_irqrestore(&self->lock, flags); |
| 1712 | |
| 1713 | /* Release the PORTS that this driver is using */ |
| 1714 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
| 1715 | self->io.fir_base); |
| 1716 | |
| 1717 | release_region(self->io.fir_base, self->io.fir_ext); |
| 1718 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1719 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | self->io.sir_base); |
| 1721 | |
| 1722 | release_region(self->io.sir_base, self->io.sir_ext); |
| 1723 | |
| 1724 | if (self->tx_buff.head) |
| 1725 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 1726 | self->tx_buff.head, self->tx_buff_dma); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | if (self->rx_buff.head) |
| 1729 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 1730 | self->rx_buff.head, self->rx_buff_dma); |
| 1731 | |
| 1732 | free_netdev(self->netdev); |
| 1733 | |
| 1734 | return 0; |
| 1735 | } |
| 1736 | |
| 1737 | static void __exit smsc_ircc_cleanup(void) |
| 1738 | { |
| 1739 | int i; |
| 1740 | |
| 1741 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1742 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1743 | for (i = 0; i < 2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | if (dev_self[i]) |
| 1745 | smsc_ircc_close(dev_self[i]); |
| 1746 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1747 | |
| 1748 | driver_unregister(&smsc_ircc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | } |
| 1750 | |
| 1751 | /* |
| 1752 | * Start SIR operations |
| 1753 | * |
| 1754 | * This function *must* be called with spinlock held, because it may |
| 1755 | * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II |
| 1756 | */ |
| 1757 | void smsc_ircc_sir_start(struct smsc_ircc_cb *self) |
| 1758 | { |
| 1759 | struct net_device *dev; |
| 1760 | int fir_base, sir_base; |
| 1761 | |
| 1762 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1763 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1764 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1765 | dev = self->netdev; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1766 | IRDA_ASSERT(dev != NULL, return;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir; |
| 1768 | |
| 1769 | fir_base = self->io.fir_base; |
| 1770 | sir_base = self->io.sir_base; |
| 1771 | |
| 1772 | /* Reset everything */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1773 | outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | |
| 1775 | #if SMSC_IRCC2_C_SIR_STOP |
| 1776 | /*smsc_ircc_sir_stop(self);*/ |
| 1777 | #endif |
| 1778 | |
| 1779 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1780 | outb(((inb(fir_base + IRCC_SCE_CFGA) & IRCC_SCE_CFGA_BLOCK_CTRL_BITS_MASK) | IRCC_CFGA_IRDA_SIR_A), fir_base + IRCC_SCE_CFGA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | |
| 1782 | /* Initialize UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1783 | outb(UART_LCR_WLEN8, sir_base + UART_LCR); /* Reset DLAB */ |
| 1784 | outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), sir_base + UART_MCR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1785 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1787 | outb(UART_IER_RLSI | UART_IER_RDI |UART_IER_THRI, sir_base + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | |
| 1789 | IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__); |
| 1790 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1791 | outb(0x00, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | } |
| 1793 | |
| 1794 | #if SMSC_IRCC2_C_SIR_STOP |
| 1795 | void smsc_ircc_sir_stop(struct smsc_ircc_cb *self) |
| 1796 | { |
| 1797 | int iobase; |
| 1798 | |
| 1799 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1800 | iobase = self->io.sir_base; |
| 1801 | |
| 1802 | /* Reset UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1803 | outb(0, iobase + UART_MCR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1806 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | } |
| 1808 | #endif |
| 1809 | |
| 1810 | /* |
| 1811 | * Function smsc_sir_write_wakeup (self) |
| 1812 | * |
| 1813 | * Called by the SIR interrupt handler when there's room for more data. |
| 1814 | * If we have more packets to send, we send them here. |
| 1815 | * |
| 1816 | */ |
| 1817 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self) |
| 1818 | { |
| 1819 | int actual = 0; |
| 1820 | int iobase; |
| 1821 | int fcr; |
| 1822 | |
| 1823 | IRDA_ASSERT(self != NULL, return;); |
| 1824 | |
| 1825 | IRDA_DEBUG(4, "%s\n", __FUNCTION__); |
| 1826 | |
| 1827 | iobase = self->io.sir_base; |
| 1828 | |
| 1829 | /* Finished with frame? */ |
| 1830 | if (self->tx_buff.len > 0) { |
| 1831 | /* Write data left in transmit buffer */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1832 | actual = smsc_ircc_sir_write(iobase, self->io.fifo_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | self->tx_buff.data, self->tx_buff.len); |
| 1834 | self->tx_buff.data += actual; |
| 1835 | self->tx_buff.len -= actual; |
| 1836 | } else { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | /*if (self->tx_buff.len ==0) {*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1839 | |
| 1840 | /* |
| 1841 | * Now serial buffer is almost free & we can start |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1842 | * transmission of another packet. But first we must check |
| 1843 | * if we need to change the speed of the hardware |
| 1844 | */ |
| 1845 | if (self->new_speed) { |
| 1846 | IRDA_DEBUG(5, "%s(), Changing speed to %d.\n", |
| 1847 | __FUNCTION__, self->new_speed); |
| 1848 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 1849 | smsc_ircc_change_speed(self, self->new_speed); |
| 1850 | self->new_speed = 0; |
| 1851 | } else { |
| 1852 | /* Tell network layer that we want more frames */ |
| 1853 | netif_wake_queue(self->netdev); |
| 1854 | } |
| 1855 | self->stats.tx_packets++; |
| 1856 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1857 | if (self->io.speed <= 115200) { |
| 1858 | /* |
| 1859 | * Reset Rx FIFO to make sure that all reflected transmit data |
| 1860 | * is discarded. This is needed for half duplex operation |
| 1861 | */ |
| 1862 | fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR; |
| 1863 | fcr |= self->io.speed < 38400 ? |
| 1864 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1865 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1866 | outb(fcr, iobase + UART_FCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1868 | /* Turn on receive interrupts */ |
| 1869 | outb(UART_IER_RDI, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | } |
| 1871 | } |
| 1872 | } |
| 1873 | |
| 1874 | /* |
| 1875 | * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len) |
| 1876 | * |
| 1877 | * Fill Tx FIFO with transmit data |
| 1878 | * |
| 1879 | */ |
| 1880 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) |
| 1881 | { |
| 1882 | int actual = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | /* Tx FIFO should be empty! */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1885 | if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1886 | IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__); |
| 1887 | return 0; |
| 1888 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | /* Fill FIFO with current frame */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1891 | while (fifo_size-- > 0 && actual < len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1892 | /* Transmit next byte */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1893 | outb(buf[actual], iobase + UART_TX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | actual++; |
| 1895 | } |
| 1896 | return actual; |
| 1897 | } |
| 1898 | |
| 1899 | /* |
| 1900 | * Function smsc_ircc_is_receiving (self) |
| 1901 | * |
| 1902 | * Returns true is we are currently receiving data |
| 1903 | * |
| 1904 | */ |
| 1905 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1906 | { |
| 1907 | return (self->rx_buff.state != OUTSIDE_FRAME); |
| 1908 | } |
| 1909 | |
| 1910 | |
| 1911 | /* |
| 1912 | * Function smsc_ircc_probe_transceiver(self) |
| 1913 | * |
| 1914 | * Tries to find the used Transceiver |
| 1915 | * |
| 1916 | */ |
| 1917 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self) |
| 1918 | { |
| 1919 | unsigned int i; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1920 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1922 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1923 | for (i = 0; smsc_transceivers[i].name != NULL; i++) |
| 1924 | if (smsc_transceivers[i].probe(self->io.fir_base)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | IRDA_MESSAGE(" %s transceiver found\n", |
| 1926 | smsc_transceivers[i].name); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1927 | self->transceiver= i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | return; |
| 1929 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1930 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | IRDA_MESSAGE("No transceiver found. Defaulting to %s\n", |
| 1932 | smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1933 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1934 | self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | } |
| 1936 | |
| 1937 | |
| 1938 | /* |
| 1939 | * Function smsc_ircc_set_transceiver_for_speed(self, speed) |
| 1940 | * |
| 1941 | * Set the transceiver according to the speed |
| 1942 | * |
| 1943 | */ |
| 1944 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed) |
| 1945 | { |
| 1946 | unsigned int trx; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1947 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | trx = self->transceiver; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1949 | if (trx > 0) |
| 1950 | smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1951 | } |
| 1952 | |
| 1953 | /* |
| 1954 | * Function smsc_ircc_wait_hw_transmitter_finish () |
| 1955 | * |
| 1956 | * Wait for the real end of HW transmission |
| 1957 | * |
| 1958 | * The UART is a strict FIFO, and we get called only when we have finished |
| 1959 | * pushing data to the FIFO, so the maximum amount of time we must wait |
| 1960 | * is only for the FIFO to drain out. |
| 1961 | * |
| 1962 | * We use a simple calibrated loop. We may need to adjust the loop |
| 1963 | * delay (udelay) to balance I/O traffic and latency. And we also need to |
| 1964 | * adjust the maximum timeout. |
| 1965 | * It would probably be better to wait for the proper interrupt, |
| 1966 | * but it doesn't seem to be available. |
| 1967 | * |
| 1968 | * We can't use jiffies or kernel timers because : |
| 1969 | * 1) We are called from the interrupt handler, which disable softirqs, |
| 1970 | * so jiffies won't be increased |
| 1971 | * 2) Jiffies granularity is usually very coarse (10ms), and we don't |
| 1972 | * want to wait that long to detect stuck hardware. |
| 1973 | * Jean II |
| 1974 | */ |
| 1975 | |
| 1976 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self) |
| 1977 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1978 | int iobase = self->io.sir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1980 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | /* Calibrated busy loop */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1982 | while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | udelay(1); |
| 1984 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1985 | if (count == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1986 | IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__); |
| 1987 | } |
| 1988 | |
| 1989 | |
| 1990 | /* PROBING |
| 1991 | * |
| 1992 | * |
| 1993 | */ |
| 1994 | |
| 1995 | static int __init smsc_ircc_look_for_chips(void) |
| 1996 | { |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 1997 | struct smsc_chip_address *address; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1998 | char *type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | unsigned int cfg_base, found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | found = 0; |
| 2002 | address = possible_addresses; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2003 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2004 | while (address->cfg_base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | cfg_base = address->cfg_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2006 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | /*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __FUNCTION__, cfg_base, address->type);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2008 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2009 | if (address->type & SMSCSIO_TYPE_FDC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | type = "FDC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2011 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2012 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type)) |
| 2013 | found++; |
| 2014 | |
| 2015 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2016 | if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type)) |
| 2017 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2019 | if (address->type & SMSCSIO_TYPE_LPC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2020 | type = "LPC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2021 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2022 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type)) |
| 2023 | found++; |
| 2024 | |
| 2025 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2026 | if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type)) |
| 2027 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | } |
| 2029 | address++; |
| 2030 | } |
| 2031 | return found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2032 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2033 | |
| 2034 | /* |
| 2035 | * Function smsc_superio_flat (chip, base, type) |
| 2036 | * |
| 2037 | * Try to get configuration of a smc SuperIO chip with flat register model |
| 2038 | * |
| 2039 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2040 | static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfgbase, char *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | { |
| 2042 | unsigned short firbase, sirbase; |
| 2043 | u8 mode, dma, irq; |
| 2044 | int ret = -ENODEV; |
| 2045 | |
| 2046 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2047 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2048 | if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2049 | return ret; |
| 2050 | |
| 2051 | outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2052 | mode = inb(cfgbase + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2053 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2054 | /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2055 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2056 | if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2057 | IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__); |
| 2058 | |
| 2059 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2060 | sirbase = inb(cfgbase + 1) << 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2062 | /* FIR iobase */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2064 | firbase = inb(cfgbase + 1) << 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | |
| 2066 | /* DMA */ |
| 2067 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2068 | dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | /* IRQ */ |
| 2071 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2072 | irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | |
| 2074 | IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__, firbase, sirbase, dma, irq, mode); |
| 2075 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2076 | if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0) |
| 2077 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2078 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | /* Exit configuration */ |
| 2080 | outb(SMSCSIO_CFGEXITKEY, cfgbase); |
| 2081 | |
| 2082 | return ret; |
| 2083 | } |
| 2084 | |
| 2085 | /* |
| 2086 | * Function smsc_superio_paged (chip, base, type) |
| 2087 | * |
| 2088 | * Try to get configuration of a smc SuperIO chip with paged register model |
| 2089 | * |
| 2090 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2091 | static int __init smsc_superio_paged(const struct smsc_chip *chips, unsigned short cfg_base, char *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2092 | { |
| 2093 | unsigned short fir_io, sir_io; |
| 2094 | int ret = -ENODEV; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2095 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2096 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2097 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2098 | if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | return ret; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | /* Select logical device (UART2) */ |
| 2102 | outb(0x07, cfg_base); |
| 2103 | outb(0x05, cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | /* SIR iobase */ |
| 2106 | outb(0x60, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2107 | sir_io = inb(cfg_base + 1) << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2108 | outb(0x61, cfg_base); |
| 2109 | sir_io |= inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | /* Read FIR base */ |
| 2112 | outb(0x62, cfg_base); |
| 2113 | fir_io = inb(cfg_base + 1) << 8; |
| 2114 | outb(0x63, cfg_base); |
| 2115 | fir_io |= inb(cfg_base + 1); |
| 2116 | outb(0x2b, cfg_base); /* ??? */ |
| 2117 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2118 | if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0) |
| 2119 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | /* Exit configuration */ |
| 2122 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2123 | |
| 2124 | return ret; |
| 2125 | } |
| 2126 | |
| 2127 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2128 | static int __init smsc_access(unsigned short cfg_base, unsigned char reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | { |
| 2130 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2131 | |
| 2132 | outb(reg, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2133 | return inb(cfg_base) != reg ? -1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | } |
| 2135 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2136 | static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2137 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2138 | u8 devid, xdevid, rev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2139 | |
| 2140 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2141 | |
| 2142 | /* Leave configuration */ |
| 2143 | |
| 2144 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2145 | |
| 2146 | if (inb(cfg_base) == SMSCSIO_CFGEXITKEY) /* not a smc superio chip */ |
| 2147 | return NULL; |
| 2148 | |
| 2149 | outb(reg, cfg_base); |
| 2150 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2151 | xdevid = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | |
| 2153 | /* Enter configuration */ |
| 2154 | |
| 2155 | outb(SMSCSIO_CFGACCESSKEY, cfg_base); |
| 2156 | |
| 2157 | #if 0 |
| 2158 | if (smsc_access(cfg_base,0x55)) /* send second key and check */ |
| 2159 | return NULL; |
| 2160 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | /* probe device ID */ |
| 2163 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2164 | if (smsc_access(cfg_base, reg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | return NULL; |
| 2166 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2167 | devid = inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2168 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2169 | if (devid == 0 || devid == 0xff) /* typical values for unused port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | return NULL; |
| 2171 | |
| 2172 | /* probe revision ID */ |
| 2173 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2174 | if (smsc_access(cfg_base, reg + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2175 | return NULL; |
| 2176 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2177 | rev = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2179 | if (rev >= 128) /* i think this will make no sense */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | return NULL; |
| 2181 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2182 | if (devid == xdevid) /* protection against false positives */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | return NULL; |
| 2184 | |
| 2185 | /* Check for expected device ID; are there others? */ |
| 2186 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2187 | while (chip->devid != devid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2188 | |
| 2189 | chip++; |
| 2190 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2191 | if (chip->name == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | return NULL; |
| 2193 | } |
| 2194 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2195 | IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n", |
| 2196 | devid, rev, cfg_base, type, chip->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2198 | if (chip->rev > rev) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2199 | IRDA_MESSAGE("Revision higher than expected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2200 | return NULL; |
| 2201 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2202 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2203 | if (chip->flags & NoIRDA) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | IRDA_MESSAGE("chipset does not support IRDA\n"); |
| 2205 | |
| 2206 | return chip; |
| 2207 | } |
| 2208 | |
| 2209 | static int __init smsc_superio_fdc(unsigned short cfg_base) |
| 2210 | { |
| 2211 | int ret = -1; |
| 2212 | |
| 2213 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2214 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2215 | __FUNCTION__, cfg_base); |
| 2216 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2217 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") || |
| 2218 | !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2219 | ret = 0; |
| 2220 | |
| 2221 | release_region(cfg_base, 2); |
| 2222 | } |
| 2223 | |
| 2224 | return ret; |
| 2225 | } |
| 2226 | |
| 2227 | static int __init smsc_superio_lpc(unsigned short cfg_base) |
| 2228 | { |
| 2229 | int ret = -1; |
| 2230 | |
| 2231 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2232 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2233 | __FUNCTION__, cfg_base); |
| 2234 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2235 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") || |
| 2236 | !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | ret = 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2239 | release_region(cfg_base, 2); |
| 2240 | } |
| 2241 | return ret; |
| 2242 | } |
| 2243 | |
| 2244 | /************************************************ |
| 2245 | * |
| 2246 | * Transceivers specific functions |
| 2247 | * |
| 2248 | ************************************************/ |
| 2249 | |
| 2250 | |
| 2251 | /* |
| 2252 | * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed) |
| 2253 | * |
| 2254 | * Program transceiver through smsc-ircc ATC circuitry |
| 2255 | * |
| 2256 | */ |
| 2257 | |
| 2258 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed) |
| 2259 | { |
| 2260 | unsigned long jiffies_now, jiffies_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2261 | u8 val; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2262 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2263 | jiffies_now = jiffies; |
| 2264 | jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | /* ATC */ |
| 2267 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2268 | outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE, |
| 2269 | fir_base + IRCC_ATC); |
| 2270 | |
| 2271 | while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) && |
| 2272 | !time_after(jiffies, jiffies_timeout)) |
| 2273 | /* empty */; |
| 2274 | |
| 2275 | if (val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2277 | inb(fir_base + IRCC_ATC)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | } |
| 2279 | |
| 2280 | /* |
| 2281 | * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base) |
| 2282 | * |
| 2283 | * Probe transceiver smsc-ircc ATC circuitry |
| 2284 | * |
| 2285 | */ |
| 2286 | |
| 2287 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base) |
| 2288 | { |
| 2289 | return 0; |
| 2290 | } |
| 2291 | |
| 2292 | /* |
| 2293 | * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed) |
| 2294 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2295 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2296 | * |
| 2297 | */ |
| 2298 | |
| 2299 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed) |
| 2300 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2301 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2302 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2303 | switch (speed) { |
| 2304 | default: |
| 2305 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2306 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2308 | case 1152000 : |
| 2309 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | fast_mode = IRCC_LCR_A_FAST; |
| 2311 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | } |
| 2313 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2314 | outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast_mode, fir_base + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | } |
| 2316 | |
| 2317 | /* |
| 2318 | * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base) |
| 2319 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2320 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | * |
| 2322 | */ |
| 2323 | |
| 2324 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base) |
| 2325 | { |
| 2326 | return 0; |
| 2327 | } |
| 2328 | |
| 2329 | /* |
| 2330 | * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed) |
| 2331 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2332 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | * |
| 2334 | */ |
| 2335 | |
| 2336 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed) |
| 2337 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2338 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2339 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2340 | switch (speed) { |
| 2341 | default: |
| 2342 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2343 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2344 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2345 | case 1152000 : |
| 2346 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2347 | fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA; |
| 2348 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2350 | } |
| 2351 | /* This causes an interrupt */ |
| 2352 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2353 | outb((inb(fir_base + IRCC_LCR_A) & 0xbf) | fast_mode, fir_base + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2354 | } |
| 2355 | |
| 2356 | /* |
| 2357 | * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base) |
| 2358 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2359 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | * |
| 2361 | */ |
| 2362 | |
| 2363 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base) |
| 2364 | { |
| 2365 | return 0; |
| 2366 | } |
| 2367 | |
| 2368 | |
| 2369 | module_init(smsc_ircc_init); |
| 2370 | module_exit(smsc_ircc_cleanup); |