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 |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame^] | 14 | * Copyright (c) 2006 Linus Walleij |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * |
| 16 | * |
| 17 | * Based on smc-ircc.c: |
| 18 | * |
| 19 | * Copyright (c) 2001 Stefani Seibold |
| 20 | * Copyright (c) 1999-2001 Dag Brattli |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 21 | * Copyright (c) 1998-1999 Thomas Davis, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | * |
| 23 | * and irport.c: |
| 24 | * |
| 25 | * Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved. |
| 26 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 27 | * |
| 28 | * This program is free software; you can redistribute it and/or |
| 29 | * modify it under the terms of the GNU General Public License as |
| 30 | * published by the Free Software Foundation; either version 2 of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | * the License, or (at your option) any later version. |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 32 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | * This program is distributed in the hope that it will be useful, |
| 34 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 35 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 36 | * GNU General Public License for more details. |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 37 | * |
| 38 | * You should have received a copy of the GNU General Public License |
| 39 | * along with this program; if not, write to the Free Software |
| 40 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | * MA 02111-1307 USA |
| 42 | * |
| 43 | ********************************************************************/ |
| 44 | |
| 45 | #include <linux/module.h> |
| 46 | #include <linux/kernel.h> |
| 47 | #include <linux/types.h> |
| 48 | #include <linux/skbuff.h> |
| 49 | #include <linux/netdevice.h> |
| 50 | #include <linux/ioport.h> |
| 51 | #include <linux/delay.h> |
| 52 | #include <linux/slab.h> |
| 53 | #include <linux/init.h> |
| 54 | #include <linux/rtnetlink.h> |
| 55 | #include <linux/serial_reg.h> |
| 56 | #include <linux/dma-mapping.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 57 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | #include <asm/io.h> |
| 60 | #include <asm/dma.h> |
| 61 | #include <asm/byteorder.h> |
| 62 | |
| 63 | #include <linux/spinlock.h> |
| 64 | #include <linux/pm.h> |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame^] | 65 | #ifdef CONFIG_PCI |
| 66 | #include <linux/pci.h> |
| 67 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | #include <net/irda/wrapper.h> |
| 70 | #include <net/irda/irda.h> |
| 71 | #include <net/irda/irda_device.h> |
| 72 | |
| 73 | #include "smsc-ircc2.h" |
| 74 | #include "smsc-sio.h" |
| 75 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 76 | |
| 77 | MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>"); |
| 78 | MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver"); |
| 79 | MODULE_LICENSE("GPL"); |
| 80 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 81 | static int ircc_dma = 255; |
| 82 | module_param(ircc_dma, int, 0); |
| 83 | MODULE_PARM_DESC(ircc_dma, "DMA channel"); |
| 84 | |
| 85 | static int ircc_irq = 255; |
| 86 | module_param(ircc_irq, int, 0); |
| 87 | MODULE_PARM_DESC(ircc_irq, "IRQ line"); |
| 88 | |
| 89 | static int ircc_fir; |
| 90 | module_param(ircc_fir, int, 0); |
| 91 | MODULE_PARM_DESC(ircc_fir, "FIR Base Address"); |
| 92 | |
| 93 | static int ircc_sir; |
| 94 | module_param(ircc_sir, int, 0); |
| 95 | MODULE_PARM_DESC(ircc_sir, "SIR Base Address"); |
| 96 | |
| 97 | static int ircc_cfg; |
| 98 | module_param(ircc_cfg, int, 0); |
| 99 | MODULE_PARM_DESC(ircc_cfg, "Configuration register base address"); |
| 100 | |
| 101 | static int ircc_transceiver; |
| 102 | module_param(ircc_transceiver, int, 0); |
| 103 | MODULE_PARM_DESC(ircc_transceiver, "Transceiver type"); |
| 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | /* Types */ |
| 106 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame^] | 107 | #ifdef CONFIG_PCI |
| 108 | struct smsc_ircc_subsystem_configuration { |
| 109 | unsigned short vendor; /* PCI vendor ID */ |
| 110 | unsigned short device; /* PCI vendor ID */ |
| 111 | unsigned short subvendor; /* PCI subsystem vendor ID */ |
| 112 | unsigned short subdevice; /* PCI sybsystem device ID */ |
| 113 | unsigned short sir_io; /* I/O port for SIR */ |
| 114 | unsigned short fir_io; /* I/O port for FIR */ |
| 115 | unsigned char fir_irq; /* FIR IRQ */ |
| 116 | unsigned char fir_dma; /* FIR DMA */ |
| 117 | unsigned short cfg_base; /* I/O port for chip configuration */ |
| 118 | int (*preconfigure)(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); /* Preconfig function */ |
| 119 | const char *name; /* name shown as info */ |
| 120 | }; |
| 121 | #endif |
| 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | struct smsc_transceiver { |
| 124 | char *name; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 125 | void (*set_for_speed)(int fir_base, u32 speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | int (*probe)(int fir_base); |
| 127 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | struct smsc_chip { |
| 130 | char *name; |
| 131 | #if 0 |
| 132 | u8 type; |
| 133 | #endif |
| 134 | u16 flags; |
| 135 | u8 devid; |
| 136 | u8 rev; |
| 137 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
| 139 | struct smsc_chip_address { |
| 140 | unsigned int cfg_base; |
| 141 | unsigned int type; |
| 142 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
| 144 | /* Private data for each instance */ |
| 145 | struct smsc_ircc_cb { |
| 146 | struct net_device *netdev; /* Yes! we are some kind of netdevice */ |
| 147 | struct net_device_stats stats; |
| 148 | struct irlap_cb *irlap; /* The link layer we are binded to */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | chipio_t io; /* IrDA controller information */ |
| 151 | iobuff_t tx_buff; /* Transmit buffer */ |
| 152 | iobuff_t rx_buff; /* Receive buffer */ |
| 153 | dma_addr_t tx_buff_dma; |
| 154 | dma_addr_t rx_buff_dma; |
| 155 | |
| 156 | struct qos_info qos; /* QoS capabilities for this device */ |
| 157 | |
| 158 | spinlock_t lock; /* For serializing operations */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | __u32 new_speed; |
| 161 | __u32 flags; /* Interface flags */ |
| 162 | |
| 163 | int tx_buff_offsets[10]; /* Offsets between frames in tx_buff */ |
| 164 | int tx_len; /* Number of frames in tx_buff */ |
| 165 | |
| 166 | int transceiver; |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 167 | struct platform_device *pldev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | }; |
| 169 | |
| 170 | /* Constants */ |
| 171 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 172 | #define SMSC_IRCC2_DRIVER_NAME "smsc-ircc2" |
| 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED 9600 |
| 175 | #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER 1 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 176 | #define SMSC_IRCC2_C_NET_TIMEOUT 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | #define SMSC_IRCC2_C_SIR_STOP 0 |
| 178 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 179 | static const char *driver_name = SMSC_IRCC2_DRIVER_NAME; |
| 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | /* Prototypes */ |
| 182 | |
| 183 | static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq); |
| 184 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base); |
| 185 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq); |
| 186 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self); |
| 187 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self); |
| 188 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 189 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self); |
| 190 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self); |
| 192 | static int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev); |
| 193 | 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] | 194 | static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs); |
| 195 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 196 | static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed); |
| 197 | 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] | 198 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs); |
| 199 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev); |
| 200 | static void smsc_ircc_sir_start(struct smsc_ircc_cb *self); |
| 201 | #if SMSC_IRCC2_C_SIR_STOP |
| 202 | static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self); |
| 203 | #endif |
| 204 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self); |
| 205 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); |
| 206 | static int smsc_ircc_net_open(struct net_device *dev); |
| 207 | static int smsc_ircc_net_close(struct net_device *dev); |
| 208 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 209 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 210 | static void smsc_ircc_timeout(struct net_device *dev); |
| 211 | #endif |
| 212 | 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] | 213 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self); |
| 214 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self); |
| 215 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed); |
| 216 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self); |
| 217 | |
| 218 | /* Probing */ |
| 219 | static int __init smsc_ircc_look_for_chips(void); |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 220 | static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type); |
| 221 | static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type); |
| 222 | 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] | 223 | static int __init smsc_superio_fdc(unsigned short cfg_base); |
| 224 | static int __init smsc_superio_lpc(unsigned short cfg_base); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame^] | 225 | #ifdef CONFIG_PCI |
| 226 | static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf); |
| 227 | static int __init preconfigure_through_82801(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); |
| 228 | static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); |
| 229 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 230 | unsigned short ircc_fir, |
| 231 | unsigned short ircc_sir, |
| 232 | unsigned char ircc_dma, |
| 233 | unsigned char ircc_irq); |
| 234 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
| 236 | /* Transceivers specific functions */ |
| 237 | |
| 238 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed); |
| 239 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base); |
| 240 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed); |
| 241 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base); |
| 242 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed); |
| 243 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base); |
| 244 | |
| 245 | /* Power Management */ |
| 246 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 247 | static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state); |
| 248 | static int smsc_ircc_resume(struct platform_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 250 | static struct platform_driver smsc_ircc_driver = { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 251 | .suspend = smsc_ircc_suspend, |
| 252 | .resume = smsc_ircc_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 253 | .driver = { |
| 254 | .name = SMSC_IRCC2_DRIVER_NAME, |
| 255 | }, |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 256 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | |
| 258 | /* Transceivers for SMSC-ircc */ |
| 259 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 260 | static struct smsc_transceiver smsc_transceivers[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 262 | { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 }, |
| 263 | { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select }, |
| 264 | { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc }, |
| 265 | { NULL, NULL } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | }; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 267 | #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | /* SMC SuperIO chipsets definitions */ |
| 270 | |
| 271 | #define KEY55_1 0 /* SuperIO Configuration mode with Key <0x55> */ |
| 272 | #define KEY55_2 1 /* SuperIO Configuration mode with Key <0x55,0x55> */ |
| 273 | #define NoIRDA 2 /* SuperIO Chip has no IRDA Port */ |
| 274 | #define SIR 0 /* SuperIO Chip has only slow IRDA */ |
| 275 | #define FIR 4 /* SuperIO Chip has fast IRDA */ |
| 276 | #define SERx4 8 /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */ |
| 277 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 278 | static struct smsc_chip __initdata fdc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | { |
| 280 | /* Base address 0x3f0 or 0x370 */ |
| 281 | { "37C44", KEY55_1|NoIRDA, 0x00, 0x00 }, /* This chip cannot be detected */ |
| 282 | { "37C665GT", KEY55_2|NoIRDA, 0x65, 0x01 }, |
| 283 | { "37C665GT", KEY55_2|NoIRDA, 0x66, 0x01 }, |
| 284 | { "37C669", KEY55_2|SIR|SERx4, 0x03, 0x02 }, |
| 285 | { "37C669", KEY55_2|SIR|SERx4, 0x04, 0x02 }, /* ID? */ |
| 286 | { "37C78", KEY55_2|NoIRDA, 0x78, 0x00 }, |
| 287 | { "37N769", KEY55_1|FIR|SERx4, 0x28, 0x00 }, |
| 288 | { "37N869", KEY55_1|FIR|SERx4, 0x29, 0x00 }, |
| 289 | { NULL } |
| 290 | }; |
| 291 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 292 | static struct smsc_chip __initdata fdc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | { |
| 294 | /* Base address 0x3f0 or 0x370 */ |
| 295 | { "37B72X", KEY55_1|SIR|SERx4, 0x4c, 0x00 }, |
| 296 | { "37B77X", KEY55_1|SIR|SERx4, 0x43, 0x00 }, |
| 297 | { "37B78X", KEY55_1|SIR|SERx4, 0x44, 0x00 }, |
| 298 | { "37B80X", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 299 | { "37C67X", KEY55_1|FIR|SERx4, 0x40, 0x00 }, |
| 300 | { "37C93X", KEY55_2|SIR|SERx4, 0x02, 0x01 }, |
| 301 | { "37C93XAPM", KEY55_1|SIR|SERx4, 0x30, 0x01 }, |
| 302 | { "37C93XFR", KEY55_2|FIR|SERx4, 0x03, 0x01 }, |
| 303 | { "37M707", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 304 | { "37M81X", KEY55_1|SIR|SERx4, 0x4d, 0x00 }, |
| 305 | { "37N958FR", KEY55_1|FIR|SERx4, 0x09, 0x04 }, |
| 306 | { "37N971", KEY55_1|FIR|SERx4, 0x0a, 0x00 }, |
| 307 | { "37N972", KEY55_1|FIR|SERx4, 0x0b, 0x00 }, |
| 308 | { NULL } |
| 309 | }; |
| 310 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 311 | static struct smsc_chip __initdata lpc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { |
| 313 | /* Base address 0x2E or 0x4E */ |
| 314 | { "47N227", KEY55_1|FIR|SERx4, 0x5a, 0x00 }, |
| 315 | { "47N267", KEY55_1|FIR|SERx4, 0x5e, 0x00 }, |
| 316 | { NULL } |
| 317 | }; |
| 318 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 319 | static struct smsc_chip __initdata lpc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | { |
| 321 | /* Base address 0x2E or 0x4E */ |
| 322 | { "47B27X", KEY55_1|SIR|SERx4, 0x51, 0x00 }, |
| 323 | { "47B37X", KEY55_1|SIR|SERx4, 0x52, 0x00 }, |
| 324 | { "47M10X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 325 | { "47M120", KEY55_1|NoIRDA|SERx4, 0x5c, 0x00 }, |
| 326 | { "47M13X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 327 | { "47M14X", KEY55_1|SIR|SERx4, 0x5f, 0x00 }, |
| 328 | { "47N252", KEY55_1|FIR|SERx4, 0x0e, 0x00 }, |
| 329 | { "47S42X", KEY55_1|SIR|SERx4, 0x57, 0x00 }, |
| 330 | { NULL } |
| 331 | }; |
| 332 | |
| 333 | #define SMSCSIO_TYPE_FDC 1 |
| 334 | #define SMSCSIO_TYPE_LPC 2 |
| 335 | #define SMSCSIO_TYPE_FLAT 4 |
| 336 | #define SMSCSIO_TYPE_PAGED 8 |
| 337 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 338 | static struct smsc_chip_address __initdata possible_addresses[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 340 | { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 341 | { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 342 | { 0xe0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 343 | { 0x2e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 344 | { 0x4e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 345 | { 0, 0 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | }; |
| 347 | |
| 348 | /* Globals */ |
| 349 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 350 | static struct smsc_ircc_cb *dev_self[] = { NULL, NULL }; |
| 351 | static unsigned short dev_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | |
| 353 | static inline void register_bank(int iobase, int bank) |
| 354 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 355 | outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)), |
| 356 | iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | |
| 360 | /******************************************************************************* |
| 361 | * |
| 362 | * |
| 363 | * SMSC-ircc stuff |
| 364 | * |
| 365 | * |
| 366 | *******************************************************************************/ |
| 367 | |
| 368 | /* |
| 369 | * Function smsc_ircc_init () |
| 370 | * |
| 371 | * Initialize chip. Just try to find out how many chips we are dealing with |
| 372 | * and where they are |
| 373 | */ |
| 374 | static int __init smsc_ircc_init(void) |
| 375 | { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 376 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
| 378 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 379 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 380 | ret = platform_driver_register(&smsc_ircc_driver); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 381 | if (ret) { |
| 382 | IRDA_ERROR("%s, Can't register driver!\n", driver_name); |
| 383 | return ret; |
| 384 | } |
| 385 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame^] | 386 | #ifdef CONFIG_PCI |
| 387 | if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) { |
| 388 | /* Ignore errors from preconfiguration */ |
| 389 | IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name); |
| 390 | } |
| 391 | #endif |
| 392 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 393 | dev_count = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 394 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 395 | if (ircc_fir > 0 && ircc_sir > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir); |
| 397 | IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir); |
| 398 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 399 | if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq)) |
| 400 | ret = -ENODEV; |
| 401 | } else { |
Brice Goglin | 505db03 | 2005-09-06 15:19:25 -0700 | [diff] [blame] | 402 | ret = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 404 | /* try user provided configuration register base address */ |
| 405 | if (ircc_cfg > 0) { |
| 406 | IRDA_MESSAGE(" Overriding configuration address " |
| 407 | "0x%04x\n", ircc_cfg); |
| 408 | if (!smsc_superio_fdc(ircc_cfg)) |
| 409 | ret = 0; |
| 410 | if (!smsc_superio_lpc(ircc_cfg)) |
| 411 | ret = 0; |
| 412 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 414 | if (smsc_ircc_look_for_chips() > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | ret = 0; |
| 416 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 417 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 418 | if (ret) |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 419 | platform_driver_unregister(&smsc_ircc_driver); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | return ret; |
| 422 | } |
| 423 | |
| 424 | /* |
| 425 | * Function smsc_ircc_open (firbase, sirbase, dma, irq) |
| 426 | * |
| 427 | * Try to open driver instance |
| 428 | * |
| 429 | */ |
| 430 | static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq) |
| 431 | { |
| 432 | struct smsc_ircc_cb *self; |
| 433 | struct net_device *dev; |
| 434 | int err; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 435 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 437 | |
| 438 | err = smsc_ircc_present(fir_base, sir_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 439 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | goto err_out; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 441 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | err = -ENOMEM; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 443 | if (dev_count >= ARRAY_SIZE(dev_self)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__); |
| 445 | goto err_out1; |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * Allocate new instance of the driver |
| 450 | */ |
| 451 | dev = alloc_irdadev(sizeof(struct smsc_ircc_cb)); |
| 452 | if (!dev) { |
| 453 | IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__); |
| 454 | goto err_out1; |
| 455 | } |
| 456 | |
| 457 | SET_MODULE_OWNER(dev); |
| 458 | |
| 459 | dev->hard_start_xmit = smsc_ircc_hard_xmit_sir; |
| 460 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 461 | dev->tx_timeout = smsc_ircc_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 462 | dev->watchdog_timeo = HZ * 2; /* Allow enough time for speed change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | #endif |
| 464 | dev->open = smsc_ircc_net_open; |
| 465 | dev->stop = smsc_ircc_net_close; |
| 466 | dev->do_ioctl = smsc_ircc_net_ioctl; |
| 467 | dev->get_stats = smsc_ircc_net_get_stats; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 468 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 469 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | self->netdev = dev; |
| 471 | |
| 472 | /* Make ifconfig display some details */ |
| 473 | dev->base_addr = self->io.fir_base = fir_base; |
| 474 | dev->irq = self->io.irq = irq; |
| 475 | |
| 476 | /* Need to store self somewhere */ |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 477 | dev_self[dev_count] = self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | spin_lock_init(&self->lock); |
| 479 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 480 | self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE; |
| 482 | |
| 483 | self->rx_buff.head = |
| 484 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 485 | &self->rx_buff_dma, GFP_KERNEL); |
| 486 | if (self->rx_buff.head == NULL) { |
| 487 | IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n", |
| 488 | driver_name); |
| 489 | goto err_out2; |
| 490 | } |
| 491 | |
| 492 | self->tx_buff.head = |
| 493 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 494 | &self->tx_buff_dma, GFP_KERNEL); |
| 495 | if (self->tx_buff.head == NULL) { |
| 496 | IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n", |
| 497 | driver_name); |
| 498 | goto err_out3; |
| 499 | } |
| 500 | |
| 501 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 502 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 503 | |
| 504 | self->rx_buff.in_frame = FALSE; |
| 505 | self->rx_buff.state = OUTSIDE_FRAME; |
| 506 | self->tx_buff.data = self->tx_buff.head; |
| 507 | self->rx_buff.data = self->rx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | smsc_ircc_setup_qos(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | smsc_ircc_init_chip(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 512 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 513 | if (ircc_transceiver > 0 && |
| 514 | ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | self->transceiver = ircc_transceiver; |
| 516 | else |
| 517 | smsc_ircc_probe_transceiver(self); |
| 518 | |
| 519 | err = register_netdev(self->netdev); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 520 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | IRDA_ERROR("%s, Network device registration failed!\n", |
| 522 | driver_name); |
| 523 | goto err_out4; |
| 524 | } |
| 525 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 526 | self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME, |
| 527 | dev_count, NULL, 0); |
| 528 | if (IS_ERR(self->pldev)) { |
| 529 | err = PTR_ERR(self->pldev); |
| 530 | goto err_out5; |
| 531 | } |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 532 | platform_set_drvdata(self->pldev, self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
| 534 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 535 | dev_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | |
| 537 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 538 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 539 | err_out5: |
| 540 | unregister_netdev(self->netdev); |
| 541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | err_out4: |
| 543 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 544 | self->tx_buff.head, self->tx_buff_dma); |
| 545 | err_out3: |
| 546 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 547 | self->rx_buff.head, self->rx_buff_dma); |
| 548 | err_out2: |
| 549 | free_netdev(self->netdev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 550 | dev_self[dev_count] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | err_out1: |
| 552 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 553 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 554 | err_out: |
| 555 | return err; |
| 556 | } |
| 557 | |
| 558 | /* |
| 559 | * Function smsc_ircc_present(fir_base, sir_base) |
| 560 | * |
| 561 | * Check the smsc-ircc chip presence |
| 562 | * |
| 563 | */ |
| 564 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base) |
| 565 | { |
| 566 | unsigned char low, high, chip, config, dma, irq, version; |
| 567 | |
| 568 | if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT, |
| 569 | driver_name)) { |
| 570 | IRDA_WARNING("%s: can't get fir_base of 0x%03x\n", |
| 571 | __FUNCTION__, fir_base); |
| 572 | goto out1; |
| 573 | } |
| 574 | |
| 575 | if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT, |
| 576 | driver_name)) { |
| 577 | IRDA_WARNING("%s: can't get sir_base of 0x%03x\n", |
| 578 | __FUNCTION__, sir_base); |
| 579 | goto out2; |
| 580 | } |
| 581 | |
| 582 | register_bank(fir_base, 3); |
| 583 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 584 | high = inb(fir_base + IRCC_ID_HIGH); |
| 585 | low = inb(fir_base + IRCC_ID_LOW); |
| 586 | chip = inb(fir_base + IRCC_CHIP_ID); |
| 587 | version = inb(fir_base + IRCC_VERSION); |
| 588 | config = inb(fir_base + IRCC_INTERFACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | dma = config & IRCC_INTERFACE_DMA_MASK; |
| 590 | irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
| 591 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 592 | if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 593 | IRDA_WARNING("%s(), addr 0x%04x - no device found!\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | __FUNCTION__, fir_base); |
| 595 | goto out3; |
| 596 | } |
| 597 | IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, " |
| 598 | "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n", |
| 599 | chip & 0x0f, version, fir_base, sir_base, dma, irq); |
| 600 | |
| 601 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 602 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | out3: |
| 604 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 605 | out2: |
| 606 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 607 | out1: |
| 608 | return -ENODEV; |
| 609 | } |
| 610 | |
| 611 | /* |
| 612 | * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq) |
| 613 | * |
| 614 | * Setup I/O |
| 615 | * |
| 616 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 617 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, |
| 618 | unsigned int fir_base, unsigned int sir_base, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | u8 dma, u8 irq) |
| 620 | { |
| 621 | unsigned char config, chip_dma, chip_irq; |
| 622 | |
| 623 | register_bank(fir_base, 3); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 624 | config = inb(fir_base + IRCC_INTERFACE); |
| 625 | chip_dma = config & IRCC_INTERFACE_DMA_MASK; |
| 626 | chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
| 628 | self->io.fir_base = fir_base; |
| 629 | self->io.sir_base = sir_base; |
| 630 | self->io.fir_ext = SMSC_IRCC2_FIR_CHIP_IO_EXTENT; |
| 631 | self->io.sir_ext = SMSC_IRCC2_SIR_CHIP_IO_EXTENT; |
| 632 | self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE; |
| 633 | self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED; |
| 634 | |
| 635 | if (irq < 255) { |
| 636 | if (irq != chip_irq) |
| 637 | IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n", |
| 638 | driver_name, chip_irq, irq); |
| 639 | self->io.irq = irq; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 640 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | self->io.irq = chip_irq; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 642 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | if (dma < 255) { |
| 644 | if (dma != chip_dma) |
| 645 | IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n", |
| 646 | driver_name, chip_dma, dma); |
| 647 | self->io.dma = dma; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 648 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | self->io.dma = chip_dma; |
| 650 | |
| 651 | } |
| 652 | |
| 653 | /* |
| 654 | * Function smsc_ircc_setup_qos(self) |
| 655 | * |
| 656 | * Setup qos |
| 657 | * |
| 658 | */ |
| 659 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self) |
| 660 | { |
| 661 | /* Initialize QoS for this device */ |
| 662 | irda_init_max_qos_capabilies(&self->qos); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 665 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); |
| 666 | |
| 667 | self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME; |
| 668 | self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE; |
| 669 | irda_qos_bits_to_value(&self->qos); |
| 670 | } |
| 671 | |
| 672 | /* |
| 673 | * Function smsc_ircc_init_chip(self) |
| 674 | * |
| 675 | * Init chip |
| 676 | * |
| 677 | */ |
| 678 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self) |
| 679 | { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 680 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 683 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 684 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | |
| 686 | register_bank(iobase, 1); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 687 | outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A), |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 688 | iobase + IRCC_SCE_CFGA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
| 690 | #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 691 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 692 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 693 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 694 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 695 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 696 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 697 | (void) inb(iobase + IRCC_FIFO_THRESHOLD); |
| 698 | outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD); |
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 | register_bank(iobase, 4); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 701 | outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 702 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | register_bank(iobase, 0); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 704 | outb(0, iobase + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | |
| 706 | smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 707 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | /* Power on device */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 709 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | } |
| 711 | |
| 712 | /* |
| 713 | * Function smsc_ircc_net_ioctl (dev, rq, cmd) |
| 714 | * |
| 715 | * Process IOCTL commands for this device |
| 716 | * |
| 717 | */ |
| 718 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 719 | { |
| 720 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 721 | struct smsc_ircc_cb *self; |
| 722 | unsigned long flags; |
| 723 | int ret = 0; |
| 724 | |
| 725 | IRDA_ASSERT(dev != NULL, return -1;); |
| 726 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 727 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | |
| 729 | IRDA_ASSERT(self != NULL, return -1;); |
| 730 | |
| 731 | 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] | 732 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | switch (cmd) { |
| 734 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 735 | if (!capable(CAP_NET_ADMIN)) |
| 736 | ret = -EPERM; |
| 737 | else { |
| 738 | /* Make sure we are the only one touching |
| 739 | * self->io.speed and the hardware - Jean II */ |
| 740 | spin_lock_irqsave(&self->lock, flags); |
| 741 | smsc_ircc_change_speed(self, irq->ifr_baudrate); |
| 742 | spin_unlock_irqrestore(&self->lock, flags); |
| 743 | } |
| 744 | break; |
| 745 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 746 | if (!capable(CAP_NET_ADMIN)) { |
| 747 | ret = -EPERM; |
| 748 | break; |
| 749 | } |
| 750 | |
| 751 | irda_device_set_media_busy(self->netdev, TRUE); |
| 752 | break; |
| 753 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 754 | irq->ifr_receiving = smsc_ircc_is_receiving(self); |
| 755 | break; |
| 756 | #if 0 |
| 757 | case SIOCSDTRRTS: |
| 758 | if (!capable(CAP_NET_ADMIN)) { |
| 759 | ret = -EPERM; |
| 760 | break; |
| 761 | } |
| 762 | smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts); |
| 763 | break; |
| 764 | #endif |
| 765 | default: |
| 766 | ret = -EOPNOTSUPP; |
| 767 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | return ret; |
| 770 | } |
| 771 | |
| 772 | static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev) |
| 773 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 774 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 775 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | return &self->stats; |
| 777 | } |
| 778 | |
| 779 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 780 | /* |
| 781 | * Function smsc_ircc_timeout (struct net_device *dev) |
| 782 | * |
| 783 | * The networking timeout management. |
| 784 | * |
| 785 | */ |
| 786 | |
| 787 | static void smsc_ircc_timeout(struct net_device *dev) |
| 788 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 789 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | unsigned long flags; |
| 791 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n", |
| 793 | dev->name, self->io.speed); |
| 794 | spin_lock_irqsave(&self->lock, flags); |
| 795 | smsc_ircc_sir_start(self); |
| 796 | smsc_ircc_change_speed(self, self->io.speed); |
| 797 | dev->trans_start = jiffies; |
| 798 | netif_wake_queue(dev); |
| 799 | spin_unlock_irqrestore(&self->lock, flags); |
| 800 | } |
| 801 | #endif |
| 802 | |
| 803 | /* |
| 804 | * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev) |
| 805 | * |
| 806 | * Transmits the current frame until FIFO is full, then |
| 807 | * waits until the next transmit interrupt, and continues until the |
| 808 | * frame is transmitted. |
| 809 | */ |
| 810 | int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev) |
| 811 | { |
| 812 | struct smsc_ircc_cb *self; |
| 813 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | s32 speed; |
| 815 | |
| 816 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 817 | |
| 818 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 819 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 820 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | IRDA_ASSERT(self != NULL, return 0;); |
| 822 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | netif_stop_queue(dev); |
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 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 826 | spin_lock_irqsave(&self->lock, flags); |
| 827 | |
| 828 | /* Check if we need to change the speed */ |
| 829 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 830 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | /* Check for empty frame */ |
| 832 | if (!skb->len) { |
| 833 | /* |
| 834 | * We send frames one by one in SIR mode (no |
| 835 | * pipelining), so at this point, if we were sending |
| 836 | * a previous frame, we just received the interrupt |
| 837 | * telling us it is finished (UART_IIR_THRI). |
| 838 | * Therefore, waiting for the transmitter to really |
| 839 | * finish draining the fifo won't take too long. |
| 840 | * And the interrupt handler is not expected to run. |
| 841 | * - Jean II */ |
| 842 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 843 | smsc_ircc_change_speed(self, speed); |
| 844 | spin_unlock_irqrestore(&self->lock, flags); |
| 845 | dev_kfree_skb(skb); |
| 846 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 848 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | } |
| 850 | |
| 851 | /* Init tx buffer */ |
| 852 | self->tx_buff.data = self->tx_buff.head; |
| 853 | |
| 854 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 855 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | self->tx_buff.truesize); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 857 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | self->stats.tx_bytes += self->tx_buff.len; |
| 859 | |
| 860 | /* Turn on transmit finished interrupt. Will fire immediately! */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 861 | outb(UART_IER_THRI, self->io.sir_base + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | |
| 863 | spin_unlock_irqrestore(&self->lock, flags); |
| 864 | |
| 865 | dev_kfree_skb(skb); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 866 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | return 0; |
| 868 | } |
| 869 | |
| 870 | /* |
| 871 | * Function smsc_ircc_set_fir_speed (self, baud) |
| 872 | * |
| 873 | * Change the speed of the device |
| 874 | * |
| 875 | */ |
| 876 | static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed) |
| 877 | { |
| 878 | int fir_base, ir_mode, ctrl, fast; |
| 879 | |
| 880 | IRDA_ASSERT(self != NULL, return;); |
| 881 | fir_base = self->io.fir_base; |
| 882 | |
| 883 | self->io.speed = speed; |
| 884 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 885 | switch (speed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | default: |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 887 | case 576000: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 889 | ctrl = IRCC_CRC; |
| 890 | fast = 0; |
| 891 | IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__); |
| 892 | break; |
| 893 | case 1152000: |
| 894 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 895 | ctrl = IRCC_1152 | IRCC_CRC; |
| 896 | fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA; |
| 897 | IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", |
| 898 | __FUNCTION__); |
| 899 | break; |
| 900 | case 4000000: |
| 901 | ir_mode = IRCC_CFGA_IRDA_4PPM; |
| 902 | ctrl = IRCC_CRC; |
| 903 | fast = IRCC_LCR_A_FAST; |
| 904 | IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", |
| 905 | __FUNCTION__); |
| 906 | break; |
| 907 | } |
| 908 | #if 0 |
| 909 | Now in tranceiver! |
| 910 | /* This causes an interrupt */ |
| 911 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 912 | 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] | 913 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 914 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 916 | 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] | 917 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 919 | outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | } |
| 921 | |
| 922 | /* |
| 923 | * Function smsc_ircc_fir_start(self) |
| 924 | * |
| 925 | * Change the speed of the device |
| 926 | * |
| 927 | */ |
| 928 | static void smsc_ircc_fir_start(struct smsc_ircc_cb *self) |
| 929 | { |
| 930 | struct net_device *dev; |
| 931 | int fir_base; |
| 932 | |
| 933 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 934 | |
| 935 | IRDA_ASSERT(self != NULL, return;); |
| 936 | dev = self->netdev; |
| 937 | IRDA_ASSERT(dev != NULL, return;); |
| 938 | |
| 939 | fir_base = self->io.fir_base; |
| 940 | |
| 941 | /* Reset everything */ |
| 942 | |
| 943 | /* Install FIR transmit handler */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 944 | dev->hard_start_xmit = smsc_ircc_hard_xmit_fir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | |
| 946 | /* Clear FIFO */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 947 | 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] | 948 | |
| 949 | /* Enable interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 950 | /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | |
| 952 | register_bank(fir_base, 1); |
| 953 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 954 | /* Select the TX/RX interface */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 956 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 957 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 958 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 959 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 960 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 961 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 962 | (void) inb(fir_base + IRCC_FIFO_THRESHOLD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | |
| 964 | /* Enable SCE interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 965 | outb(0, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 967 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER); |
| 968 | outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | } |
| 970 | |
| 971 | /* |
| 972 | * Function smsc_ircc_fir_stop(self, baud) |
| 973 | * |
| 974 | * Change the speed of the device |
| 975 | * |
| 976 | */ |
| 977 | static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self) |
| 978 | { |
| 979 | int fir_base; |
| 980 | |
| 981 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | IRDA_ASSERT(self != NULL, return;); |
| 984 | |
| 985 | fir_base = self->io.fir_base; |
| 986 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 987 | /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/ |
| 988 | 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] | 989 | } |
| 990 | |
| 991 | |
| 992 | /* |
| 993 | * Function smsc_ircc_change_speed(self, baud) |
| 994 | * |
| 995 | * Change the speed of the device |
| 996 | * |
| 997 | * This function *must* be called with spinlock held, because it may |
| 998 | * be called from the irq handler. - Jean II |
| 999 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 1000 | 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] | 1001 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | int last_speed_was_sir; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1004 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__, speed); |
| 1006 | |
| 1007 | IRDA_ASSERT(self != NULL, return;); |
| 1008 | dev = self->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | |
| 1010 | last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED; |
| 1011 | |
| 1012 | #if 0 |
| 1013 | /* Temp Hack */ |
| 1014 | speed= 1152000; |
| 1015 | self->io.speed = speed; |
| 1016 | last_speed_was_sir = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1017 | smsc_ircc_fir_start(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1019 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1020 | if (self->io.speed == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | smsc_ircc_sir_start(self); |
| 1022 | |
| 1023 | #if 0 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1024 | if (!last_speed_was_sir) speed = self->io.speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | #endif |
| 1026 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1027 | if (self->io.speed != speed) |
| 1028 | smsc_ircc_set_transceiver_for_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | |
| 1030 | self->io.speed = speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1031 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1032 | if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
| 1033 | if (!last_speed_was_sir) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | smsc_ircc_fir_stop(self); |
| 1035 | smsc_ircc_sir_start(self); |
| 1036 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1037 | smsc_ircc_set_sir_speed(self, speed); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1038 | } else { |
| 1039 | if (last_speed_was_sir) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1040 | #if SMSC_IRCC2_C_SIR_STOP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | smsc_ircc_sir_stop(self); |
| 1042 | #endif |
| 1043 | smsc_ircc_fir_start(self); |
| 1044 | } |
| 1045 | smsc_ircc_set_fir_speed(self, speed); |
| 1046 | |
| 1047 | #if 0 |
| 1048 | self->tx_buff.len = 10; |
| 1049 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1050 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1051 | smsc_ircc_dma_xmit(self, 4000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | #endif |
| 1053 | /* Be ready for incoming frames */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1054 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1056 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | netif_wake_queue(dev); |
| 1058 | } |
| 1059 | |
| 1060 | /* |
| 1061 | * Function smsc_ircc_set_sir_speed (self, speed) |
| 1062 | * |
| 1063 | * Set speed of IrDA port to specified baudrate |
| 1064 | * |
| 1065 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 1066 | 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] | 1067 | { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1068 | int iobase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | int fcr; /* FIFO control reg */ |
| 1070 | int lcr; /* Line control reg */ |
| 1071 | int divisor; |
| 1072 | |
| 1073 | IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__, speed); |
| 1074 | |
| 1075 | IRDA_ASSERT(self != NULL, return;); |
| 1076 | iobase = self->io.sir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1077 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | /* Update accounting for new speed */ |
| 1079 | self->io.speed = speed; |
| 1080 | |
| 1081 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1082 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1084 | divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1085 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | fcr = UART_FCR_ENABLE_FIFO; |
| 1087 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1088 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and |
| 1090 | * 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] | 1091 | * about this timeout since it will always be fast enough. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1093 | fcr |= self->io.speed < 38400 ? |
| 1094 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1095 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | /* IrDA ports use 8N1 */ |
| 1097 | lcr = UART_LCR_WLEN8; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1098 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1099 | outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */ |
| 1100 | outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */ |
| 1101 | outb(divisor >> 8, iobase + UART_DLM); |
| 1102 | outb(lcr, iobase + UART_LCR); /* Set 8N1 */ |
| 1103 | outb(fcr, iobase + UART_FCR); /* Enable FIFO's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | |
| 1105 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1106 | 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] | 1107 | |
| 1108 | IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__, speed); |
| 1109 | } |
| 1110 | |
| 1111 | |
| 1112 | /* |
| 1113 | * Function smsc_ircc_hard_xmit_fir (skb, dev) |
| 1114 | * |
| 1115 | * Transmit the frame! |
| 1116 | * |
| 1117 | */ |
| 1118 | static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev) |
| 1119 | { |
| 1120 | struct smsc_ircc_cb *self; |
| 1121 | unsigned long flags; |
| 1122 | s32 speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | int mtt; |
| 1124 | |
| 1125 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1126 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | IRDA_ASSERT(self != NULL, return 0;); |
| 1128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | netif_stop_queue(dev); |
| 1130 | |
| 1131 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 1132 | spin_lock_irqsave(&self->lock, flags); |
| 1133 | |
| 1134 | /* Check if we need to change the speed after this frame */ |
| 1135 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1136 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | /* Check for empty frame */ |
| 1138 | if (!skb->len) { |
| 1139 | /* Note : you should make sure that speed changes |
| 1140 | * are not going to corrupt any outgoing frame. |
| 1141 | * Look at nsc-ircc for the gory details - Jean II */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1142 | smsc_ircc_change_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | spin_unlock_irqrestore(&self->lock, flags); |
| 1144 | dev_kfree_skb(skb); |
| 1145 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1146 | } |
| 1147 | |
| 1148 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | memcpy(self->tx_buff.head, skb->data, skb->len); |
| 1152 | |
| 1153 | self->tx_buff.len = skb->len; |
| 1154 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1155 | |
| 1156 | mtt = irda_get_mtt(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | if (mtt) { |
| 1158 | int bofs; |
| 1159 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1160 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | * Compute how many BOFs (STA or PA's) we need to waste the |
| 1162 | * min turn time given the speed of the link. |
| 1163 | */ |
| 1164 | bofs = mtt * (self->io.speed / 1000) / 8000; |
| 1165 | if (bofs > 4095) |
| 1166 | bofs = 4095; |
| 1167 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1168 | smsc_ircc_dma_xmit(self, bofs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | } else { |
| 1170 | /* Transmit frame */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1171 | smsc_ircc_dma_xmit(self, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | spin_unlock_irqrestore(&self->lock, flags); |
| 1175 | dev_kfree_skb(skb); |
| 1176 | |
| 1177 | return 0; |
| 1178 | } |
| 1179 | |
| 1180 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1181 | * Function smsc_ircc_dma_xmit (self, bofs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | * |
| 1183 | * Transmit data using DMA |
| 1184 | * |
| 1185 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1186 | 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] | 1187 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1188 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1189 | u8 ctrl; |
| 1190 | |
| 1191 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1192 | #if 1 |
| 1193 | /* Disable Rx */ |
| 1194 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1195 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | #endif |
| 1197 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1198 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1199 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | |
| 1201 | self->io.direction = IO_XMIT; |
| 1202 | |
| 1203 | /* Set BOF additional count for generating the min turn time */ |
| 1204 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1205 | outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO); |
| 1206 | ctrl = inb(iobase + IRCC_CONTROL) & 0xf0; |
| 1207 | outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | |
| 1209 | /* Set max Tx frame size */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1210 | outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI); |
| 1211 | outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1212 | |
| 1213 | /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | /* Enable burst mode chip Tx DMA */ |
| 1216 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1217 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1218 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | |
| 1220 | /* Setup DMA controller (must be done after enabling chip DMA) */ |
| 1221 | irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len, |
| 1222 | DMA_TX_MODE); |
| 1223 | |
| 1224 | /* Enable interrupt */ |
| 1225 | |
| 1226 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1227 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1228 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | /* Enable transmit */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1231 | 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] | 1232 | } |
| 1233 | |
| 1234 | /* |
| 1235 | * Function smsc_ircc_dma_xmit_complete (self) |
| 1236 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1237 | * 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] | 1238 | * by the interrupt handler |
| 1239 | * |
| 1240 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1241 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1243 | int iobase = self->io.fir_base; |
| 1244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1246 | #if 0 |
| 1247 | /* Disable Tx */ |
| 1248 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1249 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | #endif |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1251 | register_bank(iobase, 1); |
| 1252 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1253 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | |
| 1255 | /* Check for underrun! */ |
| 1256 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1257 | if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | self->stats.tx_errors++; |
| 1259 | self->stats.tx_fifo_errors++; |
| 1260 | |
| 1261 | /* Reset error condition */ |
| 1262 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1263 | outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER); |
| 1264 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | } else { |
| 1266 | self->stats.tx_packets++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1267 | self->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | } |
| 1269 | |
| 1270 | /* Check if it's time to change the speed */ |
| 1271 | if (self->new_speed) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1272 | smsc_ircc_change_speed(self, self->new_speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | self->new_speed = 0; |
| 1274 | } |
| 1275 | |
| 1276 | netif_wake_queue(self->netdev); |
| 1277 | } |
| 1278 | |
| 1279 | /* |
| 1280 | * Function smsc_ircc_dma_receive(self) |
| 1281 | * |
| 1282 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1283 | * if it starts to receive a frame. |
| 1284 | * |
| 1285 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1286 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1288 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | #if 0 |
| 1290 | /* Turn off chip DMA */ |
| 1291 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1292 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1293 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | /* Disable Tx */ |
| 1297 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1298 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | |
| 1300 | /* Turn off chip DMA */ |
| 1301 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1302 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1303 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | |
| 1305 | self->io.direction = IO_RECV; |
| 1306 | self->rx_buff.data = self->rx_buff.head; |
| 1307 | |
| 1308 | /* Set max Rx frame size */ |
| 1309 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1310 | outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI); |
| 1311 | outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | |
| 1313 | /* Setup DMA controller */ |
| 1314 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1315 | DMA_RX_MODE); |
| 1316 | |
| 1317 | /* Enable burst mode chip Rx DMA */ |
| 1318 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1319 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1320 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1321 | |
| 1322 | /* Enable interrupt */ |
| 1323 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1324 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1325 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | |
| 1327 | /* Enable receiver */ |
| 1328 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1329 | outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1330 | iobase + IRCC_LCR_B); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | return 0; |
| 1333 | } |
| 1334 | |
| 1335 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1336 | * Function smsc_ircc_dma_receive_complete(self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | * |
| 1338 | * Finished with receiving frames |
| 1339 | * |
| 1340 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1341 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | { |
| 1343 | struct sk_buff *skb; |
| 1344 | int len, msgcnt, lsr; |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1345 | int iobase = self->io.fir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1346 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1348 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1350 | #if 0 |
| 1351 | /* Disable Rx */ |
| 1352 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1353 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | #endif |
| 1355 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1356 | outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR); |
| 1357 | lsr= inb(iobase + IRCC_LSR); |
| 1358 | msgcnt = inb(iobase + IRCC_LCR_B) & 0x08; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | |
| 1360 | IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__, |
| 1361 | get_dma_residue(self->io.dma)); |
| 1362 | |
| 1363 | len = self->rx_buff.truesize - get_dma_residue(self->io.dma); |
| 1364 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1365 | /* Look for errors */ |
| 1366 | 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] | 1367 | self->stats.rx_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1368 | if (lsr & IRCC_LSR_FRAME_ERROR) |
| 1369 | self->stats.rx_frame_errors++; |
| 1370 | if (lsr & IRCC_LSR_CRC_ERROR) |
| 1371 | self->stats.rx_crc_errors++; |
| 1372 | if (lsr & IRCC_LSR_SIZE_ERROR) |
| 1373 | self->stats.rx_length_errors++; |
| 1374 | if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN)) |
| 1375 | self->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | return; |
| 1377 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1379 | /* Remove CRC */ |
| 1380 | len -= self->io.speed < 4000000 ? 2 : 4; |
| 1381 | |
| 1382 | if (len < 2 || len > 2050) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__, len); |
| 1384 | return; |
| 1385 | } |
| 1386 | IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__, msgcnt, len); |
| 1387 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1388 | skb = dev_alloc_skb(len + 1); |
| 1389 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | IRDA_WARNING("%s(), memory squeeze, dropping frame.\n", |
| 1391 | __FUNCTION__); |
| 1392 | return; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | /* Make sure IP header gets aligned */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1395 | skb_reserve(skb, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | |
| 1397 | memcpy(skb_put(skb, len), self->rx_buff.data, len); |
| 1398 | self->stats.rx_packets++; |
| 1399 | self->stats.rx_bytes += len; |
| 1400 | |
| 1401 | skb->dev = self->netdev; |
| 1402 | skb->mac.raw = skb->data; |
| 1403 | skb->protocol = htons(ETH_P_IRDA); |
| 1404 | netif_rx(skb); |
| 1405 | } |
| 1406 | |
| 1407 | /* |
| 1408 | * Function smsc_ircc_sir_receive (self) |
| 1409 | * |
| 1410 | * Receive one frame from the infrared port |
| 1411 | * |
| 1412 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1413 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | { |
| 1415 | int boguscount = 0; |
| 1416 | int iobase; |
| 1417 | |
| 1418 | IRDA_ASSERT(self != NULL, return;); |
| 1419 | |
| 1420 | iobase = self->io.sir_base; |
| 1421 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1422 | /* |
| 1423 | * Receive all characters in Rx FIFO, unwrap and unstuff them. |
| 1424 | * async_unwrap_char will deliver all found frames |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | */ |
| 1426 | do { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1427 | async_unwrap_char(self->netdev, &self->stats, &self->rx_buff, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1428 | inb(iobase + UART_RX)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | |
| 1430 | /* Make sure we don't stay here to long */ |
| 1431 | if (boguscount++ > 32) { |
| 1432 | IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__); |
| 1433 | break; |
| 1434 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1435 | } while (inb(iobase + UART_LSR) & UART_LSR_DR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1436 | } |
| 1437 | |
| 1438 | |
| 1439 | /* |
| 1440 | * Function smsc_ircc_interrupt (irq, dev_id, regs) |
| 1441 | * |
| 1442 | * An interrupt from the chip has arrived. Time to do some work |
| 1443 | * |
| 1444 | */ |
| 1445 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 1446 | { |
| 1447 | struct net_device *dev = (struct net_device *) dev_id; |
| 1448 | struct smsc_ircc_cb *self; |
| 1449 | int iobase, iir, lcra, lsr; |
| 1450 | irqreturn_t ret = IRQ_NONE; |
| 1451 | |
| 1452 | if (dev == NULL) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1453 | printk(KERN_WARNING "%s: irq %d for unknown device.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | driver_name, irq); |
| 1455 | goto irq_ret; |
| 1456 | } |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1457 | |
| 1458 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | IRDA_ASSERT(self != NULL, return IRQ_NONE;); |
| 1460 | |
| 1461 | /* Serialise the interrupt handler in various CPUs, stop Tx path */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1462 | spin_lock(&self->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
| 1464 | /* Check if we should use the SIR interrupt handler */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1465 | if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | ret = smsc_ircc_interrupt_sir(dev); |
| 1467 | goto irq_ret_unlock; |
| 1468 | } |
| 1469 | |
| 1470 | iobase = self->io.fir_base; |
| 1471 | |
| 1472 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1473 | iir = inb(iobase + IRCC_IIR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1474 | if (iir == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | goto irq_ret_unlock; |
| 1476 | ret = IRQ_HANDLED; |
| 1477 | |
| 1478 | /* Disable interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1479 | outb(0, iobase + IRCC_IER); |
| 1480 | lcra = inb(iobase + IRCC_LCR_A); |
| 1481 | lsr = inb(iobase + IRCC_LSR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1482 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__, iir); |
| 1484 | |
| 1485 | if (iir & IRCC_IIR_EOM) { |
| 1486 | if (self->io.direction == IO_RECV) |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1487 | smsc_ircc_dma_receive_complete(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | else |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1489 | smsc_ircc_dma_xmit_complete(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1490 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1491 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1492 | } |
| 1493 | |
| 1494 | if (iir & IRCC_IIR_ACTIVE_FRAME) { |
| 1495 | /*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/ |
| 1496 | } |
| 1497 | |
| 1498 | /* Enable interrupts again */ |
| 1499 | |
| 1500 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1501 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | |
| 1503 | irq_ret_unlock: |
| 1504 | spin_unlock(&self->lock); |
| 1505 | irq_ret: |
| 1506 | return ret; |
| 1507 | } |
| 1508 | |
| 1509 | /* |
| 1510 | * Function irport_interrupt_sir (irq, dev_id, regs) |
| 1511 | * |
| 1512 | * Interrupt handler for SIR modes |
| 1513 | */ |
| 1514 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev) |
| 1515 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1516 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | int boguscount = 0; |
| 1518 | int iobase; |
| 1519 | int iir, lsr; |
| 1520 | |
| 1521 | /* Already locked comming here in smsc_ircc_interrupt() */ |
| 1522 | /*spin_lock(&self->lock);*/ |
| 1523 | |
| 1524 | iobase = self->io.sir_base; |
| 1525 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -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 | if (iir == 0) |
| 1528 | return IRQ_NONE; |
| 1529 | while (iir) { |
| 1530 | /* Clear interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1531 | lsr = inb(iobase + UART_LSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1533 | IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | __FUNCTION__, iir, lsr, iobase); |
| 1535 | |
| 1536 | switch (iir) { |
| 1537 | case UART_IIR_RLSI: |
| 1538 | IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__); |
| 1539 | break; |
| 1540 | case UART_IIR_RDI: |
| 1541 | /* Receive interrupt */ |
| 1542 | smsc_ircc_sir_receive(self); |
| 1543 | break; |
| 1544 | case UART_IIR_THRI: |
| 1545 | if (lsr & UART_LSR_THRE) |
| 1546 | /* Transmitter ready for data */ |
| 1547 | smsc_ircc_sir_write_wakeup(self); |
| 1548 | break; |
| 1549 | default: |
| 1550 | IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", |
| 1551 | __FUNCTION__, iir); |
| 1552 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1553 | } |
| 1554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | /* Make sure we don't stay here to long */ |
| 1556 | if (boguscount++ > 100) |
| 1557 | break; |
| 1558 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1559 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | } |
| 1561 | /*spin_unlock(&self->lock);*/ |
| 1562 | return IRQ_HANDLED; |
| 1563 | } |
| 1564 | |
| 1565 | |
| 1566 | #if 0 /* unused */ |
| 1567 | /* |
| 1568 | * Function ircc_is_receiving (self) |
| 1569 | * |
| 1570 | * Return TRUE is we are currently receiving a frame |
| 1571 | * |
| 1572 | */ |
| 1573 | static int ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1574 | { |
| 1575 | int status = FALSE; |
| 1576 | /* int iobase; */ |
| 1577 | |
| 1578 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1579 | |
| 1580 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 1581 | |
| 1582 | IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__, |
| 1583 | get_dma_residue(self->io.dma)); |
| 1584 | |
| 1585 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1586 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | return status; |
| 1588 | } |
| 1589 | #endif /* unused */ |
| 1590 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1591 | static int smsc_ircc_request_irq(struct smsc_ircc_cb *self) |
| 1592 | { |
| 1593 | int error; |
| 1594 | |
| 1595 | error = request_irq(self->io.irq, smsc_ircc_interrupt, 0, |
| 1596 | self->netdev->name, self->netdev); |
| 1597 | if (error) |
| 1598 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n", |
| 1599 | __FUNCTION__, self->io.irq, error); |
| 1600 | |
| 1601 | return error; |
| 1602 | } |
| 1603 | |
| 1604 | static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self) |
| 1605 | { |
| 1606 | unsigned long flags; |
| 1607 | |
| 1608 | spin_lock_irqsave(&self->lock, flags); |
| 1609 | |
| 1610 | self->io.speed = 0; |
| 1611 | smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
| 1612 | |
| 1613 | spin_unlock_irqrestore(&self->lock, flags); |
| 1614 | } |
| 1615 | |
| 1616 | static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self) |
| 1617 | { |
| 1618 | int iobase = self->io.fir_base; |
| 1619 | unsigned long flags; |
| 1620 | |
| 1621 | spin_lock_irqsave(&self->lock, flags); |
| 1622 | |
| 1623 | register_bank(iobase, 0); |
| 1624 | outb(0, iobase + IRCC_IER); |
| 1625 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 1626 | outb(0x00, iobase + IRCC_MASTER); |
| 1627 | |
| 1628 | spin_unlock_irqrestore(&self->lock, flags); |
| 1629 | } |
| 1630 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | |
| 1632 | /* |
| 1633 | * Function smsc_ircc_net_open (dev) |
| 1634 | * |
| 1635 | * Start the device |
| 1636 | * |
| 1637 | */ |
| 1638 | static int smsc_ircc_net_open(struct net_device *dev) |
| 1639 | { |
| 1640 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1641 | char hwname[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | |
| 1643 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1646 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1648 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1649 | if (self->io.suspended) { |
| 1650 | IRDA_DEBUG(0, "%s(), device is suspended\n", __FUNCTION__); |
| 1651 | return -EAGAIN; |
| 1652 | } |
| 1653 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1654 | if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | (void *) dev)) { |
| 1656 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n", |
| 1657 | __FUNCTION__, self->io.irq); |
| 1658 | return -EAGAIN; |
| 1659 | } |
| 1660 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1661 | smsc_ircc_start_interrupts(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | /* Give self a hardware name */ |
| 1664 | /* It would be cool to offer the chip revision here - Jean II */ |
| 1665 | sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base); |
| 1666 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1667 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | * Open new IrLAP layer instance, now that everything should be |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1669 | * initialized properly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | */ |
| 1671 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 1672 | |
| 1673 | /* |
| 1674 | * Always allocate the DMA channel after the IRQ, |
| 1675 | * and clean up on failure. |
| 1676 | */ |
| 1677 | if (request_dma(self->io.dma, dev->name)) { |
| 1678 | smsc_ircc_net_close(dev); |
| 1679 | |
| 1680 | IRDA_WARNING("%s(), unable to allocate DMA=%d\n", |
| 1681 | __FUNCTION__, self->io.dma); |
| 1682 | return -EAGAIN; |
| 1683 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1684 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | netif_start_queue(dev); |
| 1686 | |
| 1687 | return 0; |
| 1688 | } |
| 1689 | |
| 1690 | /* |
| 1691 | * Function smsc_ircc_net_close (dev) |
| 1692 | * |
| 1693 | * Stop the device |
| 1694 | * |
| 1695 | */ |
| 1696 | static int smsc_ircc_net_close(struct net_device *dev) |
| 1697 | { |
| 1698 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | |
| 1700 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1701 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1703 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1705 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | /* Stop device */ |
| 1707 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1708 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | /* Stop and remove instance of IrLAP */ |
| 1710 | if (self->irlap) |
| 1711 | irlap_close(self->irlap); |
| 1712 | self->irlap = NULL; |
| 1713 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1714 | smsc_ircc_stop_interrupts(self); |
| 1715 | |
| 1716 | /* if we are called from smsc_ircc_resume we don't have IRQ reserved */ |
| 1717 | if (!self->io.suspended) |
| 1718 | free_irq(self->io.irq, dev); |
| 1719 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | disable_dma(self->io.dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | free_dma(self->io.dma); |
| 1722 | |
| 1723 | return 0; |
| 1724 | } |
| 1725 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1726 | static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1728 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1729 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1730 | if (!self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1731 | IRDA_DEBUG(1, "%s, Suspending\n", driver_name); |
| 1732 | |
| 1733 | rtnl_lock(); |
| 1734 | if (netif_running(self->netdev)) { |
| 1735 | netif_device_detach(self->netdev); |
| 1736 | smsc_ircc_stop_interrupts(self); |
| 1737 | free_irq(self->io.irq, self->netdev); |
| 1738 | disable_dma(self->io.dma); |
| 1739 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1740 | self->io.suspended = 1; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1741 | rtnl_unlock(); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1742 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1743 | |
| 1744 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | } |
| 1746 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1747 | static int smsc_ircc_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1749 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1751 | if (self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1752 | IRDA_DEBUG(1, "%s, Waking up\n", driver_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1754 | rtnl_lock(); |
| 1755 | smsc_ircc_init_chip(self); |
| 1756 | if (netif_running(self->netdev)) { |
| 1757 | if (smsc_ircc_request_irq(self)) { |
| 1758 | /* |
| 1759 | * Don't fail resume process, just kill this |
| 1760 | * network interface |
| 1761 | */ |
| 1762 | unregister_netdevice(self->netdev); |
| 1763 | } else { |
| 1764 | enable_dma(self->io.dma); |
| 1765 | smsc_ircc_start_interrupts(self); |
| 1766 | netif_device_attach(self->netdev); |
| 1767 | } |
| 1768 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1769 | self->io.suspended = 0; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1770 | rtnl_unlock(); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1771 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | return 0; |
| 1773 | } |
| 1774 | |
| 1775 | /* |
| 1776 | * Function smsc_ircc_close (self) |
| 1777 | * |
| 1778 | * Close driver instance |
| 1779 | * |
| 1780 | */ |
| 1781 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self) |
| 1782 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1783 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1784 | |
| 1785 | IRDA_ASSERT(self != NULL, return -1;); |
| 1786 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1787 | platform_device_unregister(self->pldev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1788 | |
| 1789 | /* Remove netdevice */ |
| 1790 | unregister_netdev(self->netdev); |
| 1791 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1792 | smsc_ircc_stop_interrupts(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | |
| 1794 | /* Release the PORTS that this driver is using */ |
| 1795 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
| 1796 | self->io.fir_base); |
| 1797 | |
| 1798 | release_region(self->io.fir_base, self->io.fir_ext); |
| 1799 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1800 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | self->io.sir_base); |
| 1802 | |
| 1803 | release_region(self->io.sir_base, self->io.sir_ext); |
| 1804 | |
| 1805 | if (self->tx_buff.head) |
| 1806 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 1807 | self->tx_buff.head, self->tx_buff_dma); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1808 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | if (self->rx_buff.head) |
| 1810 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 1811 | self->rx_buff.head, self->rx_buff_dma); |
| 1812 | |
| 1813 | free_netdev(self->netdev); |
| 1814 | |
| 1815 | return 0; |
| 1816 | } |
| 1817 | |
| 1818 | static void __exit smsc_ircc_cleanup(void) |
| 1819 | { |
| 1820 | int i; |
| 1821 | |
| 1822 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1823 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1824 | for (i = 0; i < 2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | if (dev_self[i]) |
| 1826 | smsc_ircc_close(dev_self[i]); |
| 1827 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1828 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1829 | platform_driver_unregister(&smsc_ircc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | } |
| 1831 | |
| 1832 | /* |
| 1833 | * Start SIR operations |
| 1834 | * |
| 1835 | * This function *must* be called with spinlock held, because it may |
| 1836 | * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II |
| 1837 | */ |
| 1838 | void smsc_ircc_sir_start(struct smsc_ircc_cb *self) |
| 1839 | { |
| 1840 | struct net_device *dev; |
| 1841 | int fir_base, sir_base; |
| 1842 | |
| 1843 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1844 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1845 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1846 | dev = self->netdev; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1847 | IRDA_ASSERT(dev != NULL, return;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir; |
| 1849 | |
| 1850 | fir_base = self->io.fir_base; |
| 1851 | sir_base = self->io.sir_base; |
| 1852 | |
| 1853 | /* Reset everything */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1854 | outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | |
| 1856 | #if SMSC_IRCC2_C_SIR_STOP |
| 1857 | /*smsc_ircc_sir_stop(self);*/ |
| 1858 | #endif |
| 1859 | |
| 1860 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1861 | 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] | 1862 | |
| 1863 | /* Initialize UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1864 | outb(UART_LCR_WLEN8, sir_base + UART_LCR); /* Reset DLAB */ |
| 1865 | 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] | 1866 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1868 | 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] | 1869 | |
| 1870 | IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__); |
| 1871 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1872 | outb(0x00, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | } |
| 1874 | |
| 1875 | #if SMSC_IRCC2_C_SIR_STOP |
| 1876 | void smsc_ircc_sir_stop(struct smsc_ircc_cb *self) |
| 1877 | { |
| 1878 | int iobase; |
| 1879 | |
| 1880 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1881 | iobase = self->io.sir_base; |
| 1882 | |
| 1883 | /* Reset UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1884 | outb(0, iobase + UART_MCR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1885 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1886 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1887 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | } |
| 1889 | #endif |
| 1890 | |
| 1891 | /* |
| 1892 | * Function smsc_sir_write_wakeup (self) |
| 1893 | * |
| 1894 | * Called by the SIR interrupt handler when there's room for more data. |
| 1895 | * If we have more packets to send, we send them here. |
| 1896 | * |
| 1897 | */ |
| 1898 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self) |
| 1899 | { |
| 1900 | int actual = 0; |
| 1901 | int iobase; |
| 1902 | int fcr; |
| 1903 | |
| 1904 | IRDA_ASSERT(self != NULL, return;); |
| 1905 | |
| 1906 | IRDA_DEBUG(4, "%s\n", __FUNCTION__); |
| 1907 | |
| 1908 | iobase = self->io.sir_base; |
| 1909 | |
| 1910 | /* Finished with frame? */ |
| 1911 | if (self->tx_buff.len > 0) { |
| 1912 | /* Write data left in transmit buffer */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1913 | actual = smsc_ircc_sir_write(iobase, self->io.fifo_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | self->tx_buff.data, self->tx_buff.len); |
| 1915 | self->tx_buff.data += actual; |
| 1916 | self->tx_buff.len -= actual; |
| 1917 | } else { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | /*if (self->tx_buff.len ==0) {*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1920 | |
| 1921 | /* |
| 1922 | * Now serial buffer is almost free & we can start |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | * transmission of another packet. But first we must check |
| 1924 | * if we need to change the speed of the hardware |
| 1925 | */ |
| 1926 | if (self->new_speed) { |
| 1927 | IRDA_DEBUG(5, "%s(), Changing speed to %d.\n", |
| 1928 | __FUNCTION__, self->new_speed); |
| 1929 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 1930 | smsc_ircc_change_speed(self, self->new_speed); |
| 1931 | self->new_speed = 0; |
| 1932 | } else { |
| 1933 | /* Tell network layer that we want more frames */ |
| 1934 | netif_wake_queue(self->netdev); |
| 1935 | } |
| 1936 | self->stats.tx_packets++; |
| 1937 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1938 | if (self->io.speed <= 115200) { |
| 1939 | /* |
| 1940 | * Reset Rx FIFO to make sure that all reflected transmit data |
| 1941 | * is discarded. This is needed for half duplex operation |
| 1942 | */ |
| 1943 | fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR; |
| 1944 | fcr |= self->io.speed < 38400 ? |
| 1945 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1947 | outb(fcr, iobase + UART_FCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1949 | /* Turn on receive interrupts */ |
| 1950 | outb(UART_IER_RDI, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1951 | } |
| 1952 | } |
| 1953 | } |
| 1954 | |
| 1955 | /* |
| 1956 | * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len) |
| 1957 | * |
| 1958 | * Fill Tx FIFO with transmit data |
| 1959 | * |
| 1960 | */ |
| 1961 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) |
| 1962 | { |
| 1963 | int actual = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1964 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | /* Tx FIFO should be empty! */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1966 | if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__); |
| 1968 | return 0; |
| 1969 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1970 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | /* Fill FIFO with current frame */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1972 | while (fifo_size-- > 0 && actual < len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | /* Transmit next byte */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1974 | outb(buf[actual], iobase + UART_TX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | actual++; |
| 1976 | } |
| 1977 | return actual; |
| 1978 | } |
| 1979 | |
| 1980 | /* |
| 1981 | * Function smsc_ircc_is_receiving (self) |
| 1982 | * |
| 1983 | * Returns true is we are currently receiving data |
| 1984 | * |
| 1985 | */ |
| 1986 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1987 | { |
| 1988 | return (self->rx_buff.state != OUTSIDE_FRAME); |
| 1989 | } |
| 1990 | |
| 1991 | |
| 1992 | /* |
| 1993 | * Function smsc_ircc_probe_transceiver(self) |
| 1994 | * |
| 1995 | * Tries to find the used Transceiver |
| 1996 | * |
| 1997 | */ |
| 1998 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self) |
| 1999 | { |
| 2000 | unsigned int i; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2001 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | IRDA_ASSERT(self != NULL, return;); |
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 | for (i = 0; smsc_transceivers[i].name != NULL; i++) |
| 2005 | if (smsc_transceivers[i].probe(self->io.fir_base)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | IRDA_MESSAGE(" %s transceiver found\n", |
| 2007 | smsc_transceivers[i].name); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2008 | self->transceiver= i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | return; |
| 2010 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2011 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | IRDA_MESSAGE("No transceiver found. Defaulting to %s\n", |
| 2013 | smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2014 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2015 | self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | } |
| 2017 | |
| 2018 | |
| 2019 | /* |
| 2020 | * Function smsc_ircc_set_transceiver_for_speed(self, speed) |
| 2021 | * |
| 2022 | * Set the transceiver according to the speed |
| 2023 | * |
| 2024 | */ |
| 2025 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed) |
| 2026 | { |
| 2027 | unsigned int trx; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2028 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | trx = self->transceiver; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2030 | if (trx > 0) |
| 2031 | smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | } |
| 2033 | |
| 2034 | /* |
| 2035 | * Function smsc_ircc_wait_hw_transmitter_finish () |
| 2036 | * |
| 2037 | * Wait for the real end of HW transmission |
| 2038 | * |
| 2039 | * The UART is a strict FIFO, and we get called only when we have finished |
| 2040 | * pushing data to the FIFO, so the maximum amount of time we must wait |
| 2041 | * is only for the FIFO to drain out. |
| 2042 | * |
| 2043 | * We use a simple calibrated loop. We may need to adjust the loop |
| 2044 | * delay (udelay) to balance I/O traffic and latency. And we also need to |
| 2045 | * adjust the maximum timeout. |
| 2046 | * It would probably be better to wait for the proper interrupt, |
| 2047 | * but it doesn't seem to be available. |
| 2048 | * |
| 2049 | * We can't use jiffies or kernel timers because : |
| 2050 | * 1) We are called from the interrupt handler, which disable softirqs, |
| 2051 | * so jiffies won't be increased |
| 2052 | * 2) Jiffies granularity is usually very coarse (10ms), and we don't |
| 2053 | * want to wait that long to detect stuck hardware. |
| 2054 | * Jean II |
| 2055 | */ |
| 2056 | |
| 2057 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self) |
| 2058 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2059 | int iobase = self->io.sir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2061 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | /* Calibrated busy loop */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2063 | while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2064 | udelay(1); |
| 2065 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2066 | if (count == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__); |
| 2068 | } |
| 2069 | |
| 2070 | |
| 2071 | /* PROBING |
| 2072 | * |
| 2073 | * |
| 2074 | */ |
| 2075 | |
| 2076 | static int __init smsc_ircc_look_for_chips(void) |
| 2077 | { |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2078 | struct smsc_chip_address *address; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2079 | char *type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2080 | unsigned int cfg_base, found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2081 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | found = 0; |
| 2083 | address = possible_addresses; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2084 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2085 | while (address->cfg_base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2086 | cfg_base = address->cfg_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2087 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | /*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] | 2089 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2090 | if (address->type & SMSCSIO_TYPE_FDC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | type = "FDC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2092 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2093 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type)) |
| 2094 | found++; |
| 2095 | |
| 2096 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2097 | if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type)) |
| 2098 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2099 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2100 | if (address->type & SMSCSIO_TYPE_LPC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | type = "LPC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2102 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2103 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type)) |
| 2104 | found++; |
| 2105 | |
| 2106 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2107 | if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type)) |
| 2108 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2109 | } |
| 2110 | address++; |
| 2111 | } |
| 2112 | return found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2113 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2114 | |
| 2115 | /* |
| 2116 | * Function smsc_superio_flat (chip, base, type) |
| 2117 | * |
| 2118 | * Try to get configuration of a smc SuperIO chip with flat register model |
| 2119 | * |
| 2120 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2121 | 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] | 2122 | { |
| 2123 | unsigned short firbase, sirbase; |
| 2124 | u8 mode, dma, irq; |
| 2125 | int ret = -ENODEV; |
| 2126 | |
| 2127 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2128 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2129 | if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | return ret; |
| 2131 | |
| 2132 | outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2133 | mode = inb(cfgbase + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2134 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2136 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2137 | if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2138 | IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__); |
| 2139 | |
| 2140 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2141 | sirbase = inb(cfgbase + 1) << 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2142 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2143 | /* FIR iobase */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2145 | firbase = inb(cfgbase + 1) << 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2146 | |
| 2147 | /* DMA */ |
| 2148 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2149 | dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2151 | /* IRQ */ |
| 2152 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2153 | irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2154 | |
| 2155 | IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__, firbase, sirbase, dma, irq, mode); |
| 2156 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2157 | if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0) |
| 2158 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | /* Exit configuration */ |
| 2161 | outb(SMSCSIO_CFGEXITKEY, cfgbase); |
| 2162 | |
| 2163 | return ret; |
| 2164 | } |
| 2165 | |
| 2166 | /* |
| 2167 | * Function smsc_superio_paged (chip, base, type) |
| 2168 | * |
| 2169 | * Try to get configuration of a smc SuperIO chip with paged register model |
| 2170 | * |
| 2171 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2172 | 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] | 2173 | { |
| 2174 | unsigned short fir_io, sir_io; |
| 2175 | int ret = -ENODEV; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2177 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2178 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2179 | if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | return ret; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2181 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2182 | /* Select logical device (UART2) */ |
| 2183 | outb(0x07, cfg_base); |
| 2184 | outb(0x05, cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | /* SIR iobase */ |
| 2187 | outb(0x60, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2188 | sir_io = inb(cfg_base + 1) << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | outb(0x61, cfg_base); |
| 2190 | sir_io |= inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | /* Read FIR base */ |
| 2193 | outb(0x62, cfg_base); |
| 2194 | fir_io = inb(cfg_base + 1) << 8; |
| 2195 | outb(0x63, cfg_base); |
| 2196 | fir_io |= inb(cfg_base + 1); |
| 2197 | outb(0x2b, cfg_base); /* ??? */ |
| 2198 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2199 | if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0) |
| 2200 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2201 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | /* Exit configuration */ |
| 2203 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2204 | |
| 2205 | return ret; |
| 2206 | } |
| 2207 | |
| 2208 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2209 | static int __init smsc_access(unsigned short cfg_base, unsigned char reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | { |
| 2211 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2212 | |
| 2213 | outb(reg, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2214 | return inb(cfg_base) != reg ? -1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2215 | } |
| 2216 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2217 | 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] | 2218 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2219 | u8 devid, xdevid, rev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | |
| 2221 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2222 | |
| 2223 | /* Leave configuration */ |
| 2224 | |
| 2225 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2226 | |
| 2227 | if (inb(cfg_base) == SMSCSIO_CFGEXITKEY) /* not a smc superio chip */ |
| 2228 | return NULL; |
| 2229 | |
| 2230 | outb(reg, cfg_base); |
| 2231 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2232 | xdevid = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2233 | |
| 2234 | /* Enter configuration */ |
| 2235 | |
| 2236 | outb(SMSCSIO_CFGACCESSKEY, cfg_base); |
| 2237 | |
| 2238 | #if 0 |
| 2239 | if (smsc_access(cfg_base,0x55)) /* send second key and check */ |
| 2240 | return NULL; |
| 2241 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | /* probe device ID */ |
| 2244 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2245 | if (smsc_access(cfg_base, reg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | return NULL; |
| 2247 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2248 | devid = inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2249 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2250 | if (devid == 0 || devid == 0xff) /* typical values for unused port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | return NULL; |
| 2252 | |
| 2253 | /* probe revision ID */ |
| 2254 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2255 | if (smsc_access(cfg_base, reg + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2256 | return NULL; |
| 2257 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2258 | rev = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2260 | if (rev >= 128) /* i think this will make no sense */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | return NULL; |
| 2262 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2263 | if (devid == xdevid) /* protection against false positives */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | return NULL; |
| 2265 | |
| 2266 | /* Check for expected device ID; are there others? */ |
| 2267 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2268 | while (chip->devid != devid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | |
| 2270 | chip++; |
| 2271 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2272 | if (chip->name == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | return NULL; |
| 2274 | } |
| 2275 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2276 | IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n", |
| 2277 | devid, rev, cfg_base, type, chip->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2278 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2279 | if (chip->rev > rev) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2280 | IRDA_MESSAGE("Revision higher than expected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | return NULL; |
| 2282 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2283 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2284 | if (chip->flags & NoIRDA) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2285 | IRDA_MESSAGE("chipset does not support IRDA\n"); |
| 2286 | |
| 2287 | return chip; |
| 2288 | } |
| 2289 | |
| 2290 | static int __init smsc_superio_fdc(unsigned short cfg_base) |
| 2291 | { |
| 2292 | int ret = -1; |
| 2293 | |
| 2294 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2295 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2296 | __FUNCTION__, cfg_base); |
| 2297 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2298 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") || |
| 2299 | !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2300 | ret = 0; |
| 2301 | |
| 2302 | release_region(cfg_base, 2); |
| 2303 | } |
| 2304 | |
| 2305 | return ret; |
| 2306 | } |
| 2307 | |
| 2308 | static int __init smsc_superio_lpc(unsigned short cfg_base) |
| 2309 | { |
| 2310 | int ret = -1; |
| 2311 | |
| 2312 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2313 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2314 | __FUNCTION__, cfg_base); |
| 2315 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2316 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") || |
| 2317 | !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | ret = 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2319 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | release_region(cfg_base, 2); |
| 2321 | } |
| 2322 | return ret; |
| 2323 | } |
| 2324 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame^] | 2325 | /* |
| 2326 | * Look for some specific subsystem setups that need |
| 2327 | * pre-configuration not properly done by the BIOS (especially laptops) |
| 2328 | * This code is based in part on smcinit.c, tosh1800-smcinit.c |
| 2329 | * and tosh2450-smcinit.c. The table lists the device entries |
| 2330 | * for ISA bridges with an LPC (Local Peripheral Configurator) |
| 2331 | * that are in turn used to configure the SMSC device with default |
| 2332 | * SIR and FIR I/O ports, DMA and IRQ. |
| 2333 | */ |
| 2334 | #ifdef CONFIG_PCI |
| 2335 | #define PCIID_VENDOR_INTEL 0x8086 |
| 2336 | #define PCIID_VENDOR_ALI 0x10b9 |
| 2337 | static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __devinitdata = { |
| 2338 | { |
| 2339 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2340 | .device = 0x24cc, |
| 2341 | .subvendor = 0x103c, |
| 2342 | .subdevice = 0x088c, |
| 2343 | .sir_io = 0x02f8, /* Quite certain these are the same for nc8000 as for nc6000 */ |
| 2344 | .fir_io = 0x0130, |
| 2345 | .fir_irq = 0x09, |
| 2346 | .fir_dma = 0x03, |
| 2347 | .cfg_base = 0x004e, |
| 2348 | .preconfigure = preconfigure_through_82801, |
| 2349 | .name = "HP nc8000", |
| 2350 | }, |
| 2351 | { |
| 2352 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2353 | .device = 0x24cc, |
| 2354 | .subvendor = 0x103c, |
| 2355 | .subdevice = 0x0890, |
| 2356 | .sir_io = 0x02f8, |
| 2357 | .fir_io = 0x0130, |
| 2358 | .fir_irq = 0x09, |
| 2359 | .fir_dma = 0x03, |
| 2360 | .cfg_base = 0x004e, |
| 2361 | .preconfigure = preconfigure_through_82801, |
| 2362 | .name = "HP nc6000", |
| 2363 | }, |
| 2364 | { |
| 2365 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */ |
| 2366 | .device = 0x24c0, |
| 2367 | .subvendor = 0x1179, |
| 2368 | .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */ |
| 2369 | .sir_io = 0x03f8, |
| 2370 | .fir_io = 0x0130, |
| 2371 | .fir_irq = 0x07, |
| 2372 | .fir_dma = 0x01, |
| 2373 | .cfg_base = 0x002e, |
| 2374 | .preconfigure = preconfigure_through_82801, |
| 2375 | .name = "Toshiba Satellite 2450", |
| 2376 | }, |
| 2377 | { |
| 2378 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */ |
| 2379 | .device = 0x248c, /* Some use 24cc? */ |
| 2380 | .subvendor = 0x1179, |
| 2381 | .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */ |
| 2382 | .sir_io = 0x03f8, |
| 2383 | .fir_io = 0x0130, |
| 2384 | .fir_irq = 0x03, |
| 2385 | .fir_dma = 0x03, |
| 2386 | .cfg_base = 0x002e, |
| 2387 | .preconfigure = preconfigure_through_82801, |
| 2388 | .name = "Toshiba Satellite 5100/5200, Tecra 9100", |
| 2389 | }, |
| 2390 | { |
| 2391 | .vendor = PCIID_VENDOR_ALI, /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */ |
| 2392 | .device = 0x1533, |
| 2393 | .subvendor = 0x1179, |
| 2394 | .subdevice = 0xffff, /* 0xffff is "any", Not sure, 0x0001 or 0x0002 */ |
| 2395 | .sir_io = 0x02e8, |
| 2396 | .fir_io = 0x02f8, |
| 2397 | .fir_irq = 0x07, |
| 2398 | .fir_dma = 0x03, |
| 2399 | .cfg_base = 0x002e, |
| 2400 | .preconfigure = preconfigure_through_ali, |
| 2401 | .name = "Toshiba Satellite 1800", |
| 2402 | }, |
| 2403 | { } // Terminator |
| 2404 | }; |
| 2405 | |
| 2406 | |
| 2407 | /* |
| 2408 | * This sets up the basic SMSC parameters (FIR port, SIR port, FIR DMA, FIR IRQ) |
| 2409 | * through the chip configuration port. |
| 2410 | */ |
| 2411 | static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf) |
| 2412 | { |
| 2413 | unsigned short iobase = conf->cfg_base; |
| 2414 | unsigned char tmpbyte; |
| 2415 | |
| 2416 | outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state |
| 2417 | outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID |
| 2418 | tmpbyte = inb(iobase +1); // Read device ID |
| 2419 | IRDA_DEBUG(0, "Detected Chip id: 0x%02x, setting up registers...\n",tmpbyte); |
| 2420 | |
| 2421 | /* Disable UART1 and set up SIR I/O port */ |
| 2422 | outb(0x24, iobase); // select CR24 - UART1 base addr |
| 2423 | outb(0x00, iobase + 1); // disable UART1 |
| 2424 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase); // select CR25 - UART2 base addr |
| 2425 | outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8 |
| 2426 | tmpbyte = inb(iobase + 1); |
| 2427 | if (tmpbyte != (conf->sir_io >> 2) ) { |
| 2428 | IRDA_WARNING("ERROR: could not configure SIR ioport.\n"); |
| 2429 | return -ENXIO; |
| 2430 | } |
| 2431 | |
| 2432 | /* Set up FIR IRQ channel for UART2 */ |
| 2433 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select |
| 2434 | tmpbyte = inb(iobase + 1); |
| 2435 | tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion |
| 2436 | tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK); |
| 2437 | outb(tmpbyte, iobase + 1); |
| 2438 | tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
| 2439 | if (tmpbyte != conf->fir_irq) { |
| 2440 | IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n"); |
| 2441 | return -ENXIO; |
| 2442 | } |
| 2443 | |
| 2444 | /* Set up FIR I/O port */ |
| 2445 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase); // CR2B - SCE (FIR) base addr |
| 2446 | outb((conf->fir_io >> 3), iobase + 1); |
| 2447 | tmpbyte = inb(iobase + 1); |
| 2448 | if (tmpbyte != (conf->fir_io >> 3) ) { |
| 2449 | IRDA_WARNING("ERROR: could not configure FIR I/O port.\n"); |
| 2450 | return -ENXIO; |
| 2451 | } |
| 2452 | |
| 2453 | /* Set up FIR DMA channel */ |
| 2454 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase); // CR2C - SCE (FIR) DMA select |
| 2455 | outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA |
| 2456 | tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK; |
| 2457 | if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) { |
| 2458 | IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n"); |
| 2459 | return -ENXIO; |
| 2460 | } |
| 2461 | |
| 2462 | outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase); // CR0C - UART mode |
| 2463 | tmpbyte = inb(iobase + 1); |
| 2464 | tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK | SMSCSIOFLAT_UART2MODE_VAL_IRDA; |
| 2465 | outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed |
| 2466 | |
| 2467 | outb(LPC47N227_APMBOOTDRIVE_REG, iobase); // CR07 - Auto Pwr Mgt/boot drive sel |
| 2468 | tmpbyte = inb(iobase + 1); |
| 2469 | outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down |
| 2470 | |
| 2471 | /* This one was not part of tosh1800 */ |
| 2472 | outb(0x0a, iobase); // CR0a - ecp fifo / ir mux |
| 2473 | tmpbyte = inb(iobase + 1); |
| 2474 | outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port |
| 2475 | |
| 2476 | outb(LPC47N227_UART12POWER_REG, iobase); // CR02 - UART 1,2 power |
| 2477 | tmpbyte = inb(iobase + 1); |
| 2478 | outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down |
| 2479 | |
| 2480 | outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase); // CR00 - FDC Power/valid config cycle |
| 2481 | tmpbyte = inb(iobase + 1); |
| 2482 | outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done |
| 2483 | |
| 2484 | outb(LPC47N227_CFGEXITKEY, iobase); // Exit configuration |
| 2485 | |
| 2486 | return 0; |
| 2487 | } |
| 2488 | |
| 2489 | /* 82801CAM registers */ |
| 2490 | #define VID 0x00 |
| 2491 | #define DID 0x02 |
| 2492 | #define PIRQA_ROUT 0x60 |
| 2493 | #define PCI_DMA_C 0x90 |
| 2494 | #define COM_DEC 0xe0 |
| 2495 | #define LPC_EN 0xe6 |
| 2496 | #define GEN2_DEC 0xec |
| 2497 | /* |
| 2498 | * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge or |
| 2499 | * Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge. They all work the same way! |
| 2500 | */ |
| 2501 | static int __init preconfigure_through_82801(struct pci_dev *dev, |
| 2502 | struct smsc_ircc_subsystem_configuration *conf) |
| 2503 | { |
| 2504 | unsigned short tmpword; |
| 2505 | int ret; |
| 2506 | |
| 2507 | IRDA_MESSAGE("Setting up the SMSC device via the 82801 controller.\n"); |
| 2508 | pci_write_config_byte(dev, COM_DEC, 0x10); |
| 2509 | |
| 2510 | /* Enable LPC */ |
| 2511 | pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */ |
| 2512 | tmpword &= 0xfffd; /* mask bit 1 */ |
| 2513 | tmpword |= 0x0001; /* set bit 0 : COMA addr range enable */ |
| 2514 | pci_write_config_word(dev, LPC_EN, tmpword); |
| 2515 | |
| 2516 | /* Setup DMA */ |
| 2517 | pci_write_config_word(dev, PCI_DMA_C, 0xc0c0); /* LPC I/F DMA on, channel 3 -- rtm (?? PCI DMA ?) */ |
| 2518 | pci_write_config_word(dev, GEN2_DEC, 0x131); /* LPC I/F 2nd decode range */ |
| 2519 | |
| 2520 | /* Pre-configure chip */ |
| 2521 | ret = preconfigure_smsc_chip(conf); |
| 2522 | |
| 2523 | /* Disable LPC */ |
| 2524 | pci_read_config_word(dev, LPC_EN, &tmpword); /* LPC_EN register */ |
| 2525 | tmpword &= 0xfffc; /* mask bit 1 and bit 0, COMA addr range disable */ |
| 2526 | pci_write_config_word(dev, LPC_EN, tmpword); |
| 2527 | return ret; |
| 2528 | } |
| 2529 | |
| 2530 | static int __init preconfigure_through_ali(struct pci_dev *dev, |
| 2531 | struct smsc_ircc_subsystem_configuration *conf) |
| 2532 | { |
| 2533 | /* TODO: put in ALi 1533 configuration here. */ |
| 2534 | IRDA_MESSAGE("SORRY: %s has an unsupported bridge controller (ALi): not pre-configured.\n", conf->name); |
| 2535 | return -ENODEV; |
| 2536 | } |
| 2537 | |
| 2538 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 2539 | unsigned short ircc_fir, |
| 2540 | unsigned short ircc_sir, |
| 2541 | unsigned char ircc_dma, |
| 2542 | unsigned char ircc_irq) |
| 2543 | { |
| 2544 | struct pci_dev *dev = NULL; |
| 2545 | unsigned short ss_vendor = 0x0000; |
| 2546 | unsigned short ss_device = 0x0000; |
| 2547 | int ret = 0; |
| 2548 | |
| 2549 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2550 | |
| 2551 | while (dev != NULL) { |
| 2552 | struct smsc_ircc_subsystem_configuration *conf; |
| 2553 | |
| 2554 | /* |
| 2555 | * Cache the subsystem vendor/device: some manufacturers fail to set |
| 2556 | * this for all components, so we save it in case there is just |
| 2557 | * 0x0000 0x0000 on the device we want to check. |
| 2558 | */ |
| 2559 | if (dev->subsystem_vendor != 0x0000U) { |
| 2560 | ss_vendor = dev->subsystem_vendor; |
| 2561 | ss_device = dev->subsystem_device; |
| 2562 | } |
| 2563 | conf = subsystem_configurations; |
| 2564 | for( ; conf->subvendor; conf++) { |
| 2565 | if(conf->vendor == dev->vendor && |
| 2566 | conf->device == dev->device && |
| 2567 | conf->subvendor == ss_vendor && /* Sometimes these are cached values */ |
| 2568 | (conf->subdevice == ss_device || conf->subdevice == 0xffff)) { |
| 2569 | struct smsc_ircc_subsystem_configuration tmpconf; |
| 2570 | |
| 2571 | memcpy(&tmpconf, conf, sizeof(struct smsc_ircc_subsystem_configuration)); |
| 2572 | |
| 2573 | /* Override the default values with anything passed in as parameter */ |
| 2574 | if (ircc_cfg != 0) |
| 2575 | tmpconf.cfg_base = ircc_cfg; |
| 2576 | if (ircc_fir != 0) |
| 2577 | tmpconf.fir_io = ircc_fir; |
| 2578 | if (ircc_sir != 0) |
| 2579 | tmpconf.sir_io = ircc_sir; |
| 2580 | if (ircc_dma != 0xff) |
| 2581 | tmpconf.fir_dma = ircc_dma; |
| 2582 | if (ircc_irq != 0xff) |
| 2583 | tmpconf.fir_irq = ircc_irq; |
| 2584 | |
| 2585 | IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name); |
| 2586 | if (conf->preconfigure) |
| 2587 | ret = conf->preconfigure(dev, &tmpconf); |
| 2588 | else |
| 2589 | ret = -ENODEV; |
| 2590 | } |
| 2591 | } |
| 2592 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2593 | } |
| 2594 | |
| 2595 | return ret; |
| 2596 | } |
| 2597 | #endif // CONFIG_PCI |
| 2598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | /************************************************ |
| 2600 | * |
| 2601 | * Transceivers specific functions |
| 2602 | * |
| 2603 | ************************************************/ |
| 2604 | |
| 2605 | |
| 2606 | /* |
| 2607 | * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed) |
| 2608 | * |
| 2609 | * Program transceiver through smsc-ircc ATC circuitry |
| 2610 | * |
| 2611 | */ |
| 2612 | |
| 2613 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed) |
| 2614 | { |
| 2615 | unsigned long jiffies_now, jiffies_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2616 | u8 val; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2617 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2618 | jiffies_now = jiffies; |
| 2619 | jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2620 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2621 | /* ATC */ |
| 2622 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2623 | outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE, |
| 2624 | fir_base + IRCC_ATC); |
| 2625 | |
| 2626 | while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) && |
| 2627 | !time_after(jiffies, jiffies_timeout)) |
| 2628 | /* empty */; |
| 2629 | |
| 2630 | if (val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2631 | IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2632 | inb(fir_base + IRCC_ATC)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2633 | } |
| 2634 | |
| 2635 | /* |
| 2636 | * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base) |
| 2637 | * |
| 2638 | * Probe transceiver smsc-ircc ATC circuitry |
| 2639 | * |
| 2640 | */ |
| 2641 | |
| 2642 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base) |
| 2643 | { |
| 2644 | return 0; |
| 2645 | } |
| 2646 | |
| 2647 | /* |
| 2648 | * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed) |
| 2649 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2650 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2651 | * |
| 2652 | */ |
| 2653 | |
| 2654 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed) |
| 2655 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2656 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2657 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2658 | switch (speed) { |
| 2659 | default: |
| 2660 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2661 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2662 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2663 | case 1152000 : |
| 2664 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2665 | fast_mode = IRCC_LCR_A_FAST; |
| 2666 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | } |
| 2668 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2669 | 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] | 2670 | } |
| 2671 | |
| 2672 | /* |
| 2673 | * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base) |
| 2674 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2675 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2676 | * |
| 2677 | */ |
| 2678 | |
| 2679 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base) |
| 2680 | { |
| 2681 | return 0; |
| 2682 | } |
| 2683 | |
| 2684 | /* |
| 2685 | * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed) |
| 2686 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2687 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | * |
| 2689 | */ |
| 2690 | |
| 2691 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed) |
| 2692 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2693 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2694 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2695 | switch (speed) { |
| 2696 | default: |
| 2697 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2698 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2700 | case 1152000 : |
| 2701 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA; |
| 2703 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2705 | } |
| 2706 | /* This causes an interrupt */ |
| 2707 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2708 | 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] | 2709 | } |
| 2710 | |
| 2711 | /* |
| 2712 | * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base) |
| 2713 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2714 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | * |
| 2716 | */ |
| 2717 | |
| 2718 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base) |
| 2719 | { |
| 2720 | return 0; |
| 2721 | } |
| 2722 | |
| 2723 | |
| 2724 | module_init(smsc_ircc_init); |
| 2725 | module_exit(smsc_ircc_cleanup); |