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); |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 228 | static void __init preconfigure_ali_port(struct pci_dev *dev, |
| 229 | unsigned short port); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 230 | static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); |
| 231 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 232 | unsigned short ircc_fir, |
| 233 | unsigned short ircc_sir, |
| 234 | unsigned char ircc_dma, |
| 235 | unsigned char ircc_irq); |
| 236 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | /* Transceivers specific functions */ |
| 239 | |
| 240 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed); |
| 241 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base); |
| 242 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed); |
| 243 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base); |
| 244 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed); |
| 245 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base); |
| 246 | |
| 247 | /* Power Management */ |
| 248 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 249 | static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state); |
| 250 | static int smsc_ircc_resume(struct platform_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 252 | static struct platform_driver smsc_ircc_driver = { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 253 | .suspend = smsc_ircc_suspend, |
| 254 | .resume = smsc_ircc_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 255 | .driver = { |
| 256 | .name = SMSC_IRCC2_DRIVER_NAME, |
| 257 | }, |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 258 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | /* Transceivers for SMSC-ircc */ |
| 261 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 262 | static struct smsc_transceiver smsc_transceivers[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 264 | { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 }, |
| 265 | { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select }, |
| 266 | { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc }, |
| 267 | { NULL, NULL } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | }; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 269 | #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
| 271 | /* SMC SuperIO chipsets definitions */ |
| 272 | |
| 273 | #define KEY55_1 0 /* SuperIO Configuration mode with Key <0x55> */ |
| 274 | #define KEY55_2 1 /* SuperIO Configuration mode with Key <0x55,0x55> */ |
| 275 | #define NoIRDA 2 /* SuperIO Chip has no IRDA Port */ |
| 276 | #define SIR 0 /* SuperIO Chip has only slow IRDA */ |
| 277 | #define FIR 4 /* SuperIO Chip has fast IRDA */ |
| 278 | #define SERx4 8 /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */ |
| 279 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 280 | static struct smsc_chip __initdata fdc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | { |
| 282 | /* Base address 0x3f0 or 0x370 */ |
| 283 | { "37C44", KEY55_1|NoIRDA, 0x00, 0x00 }, /* This chip cannot be detected */ |
| 284 | { "37C665GT", KEY55_2|NoIRDA, 0x65, 0x01 }, |
| 285 | { "37C665GT", KEY55_2|NoIRDA, 0x66, 0x01 }, |
| 286 | { "37C669", KEY55_2|SIR|SERx4, 0x03, 0x02 }, |
| 287 | { "37C669", KEY55_2|SIR|SERx4, 0x04, 0x02 }, /* ID? */ |
| 288 | { "37C78", KEY55_2|NoIRDA, 0x78, 0x00 }, |
| 289 | { "37N769", KEY55_1|FIR|SERx4, 0x28, 0x00 }, |
| 290 | { "37N869", KEY55_1|FIR|SERx4, 0x29, 0x00 }, |
| 291 | { NULL } |
| 292 | }; |
| 293 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 294 | static struct smsc_chip __initdata fdc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | { |
| 296 | /* Base address 0x3f0 or 0x370 */ |
| 297 | { "37B72X", KEY55_1|SIR|SERx4, 0x4c, 0x00 }, |
| 298 | { "37B77X", KEY55_1|SIR|SERx4, 0x43, 0x00 }, |
| 299 | { "37B78X", KEY55_1|SIR|SERx4, 0x44, 0x00 }, |
| 300 | { "37B80X", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 301 | { "37C67X", KEY55_1|FIR|SERx4, 0x40, 0x00 }, |
| 302 | { "37C93X", KEY55_2|SIR|SERx4, 0x02, 0x01 }, |
| 303 | { "37C93XAPM", KEY55_1|SIR|SERx4, 0x30, 0x01 }, |
| 304 | { "37C93XFR", KEY55_2|FIR|SERx4, 0x03, 0x01 }, |
| 305 | { "37M707", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 306 | { "37M81X", KEY55_1|SIR|SERx4, 0x4d, 0x00 }, |
| 307 | { "37N958FR", KEY55_1|FIR|SERx4, 0x09, 0x04 }, |
| 308 | { "37N971", KEY55_1|FIR|SERx4, 0x0a, 0x00 }, |
| 309 | { "37N972", KEY55_1|FIR|SERx4, 0x0b, 0x00 }, |
| 310 | { NULL } |
| 311 | }; |
| 312 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 313 | static struct smsc_chip __initdata lpc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | { |
| 315 | /* Base address 0x2E or 0x4E */ |
| 316 | { "47N227", KEY55_1|FIR|SERx4, 0x5a, 0x00 }, |
| 317 | { "47N267", KEY55_1|FIR|SERx4, 0x5e, 0x00 }, |
| 318 | { NULL } |
| 319 | }; |
| 320 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 321 | static struct smsc_chip __initdata lpc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
| 323 | /* Base address 0x2E or 0x4E */ |
| 324 | { "47B27X", KEY55_1|SIR|SERx4, 0x51, 0x00 }, |
| 325 | { "47B37X", KEY55_1|SIR|SERx4, 0x52, 0x00 }, |
| 326 | { "47M10X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 327 | { "47M120", KEY55_1|NoIRDA|SERx4, 0x5c, 0x00 }, |
| 328 | { "47M13X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 329 | { "47M14X", KEY55_1|SIR|SERx4, 0x5f, 0x00 }, |
| 330 | { "47N252", KEY55_1|FIR|SERx4, 0x0e, 0x00 }, |
| 331 | { "47S42X", KEY55_1|SIR|SERx4, 0x57, 0x00 }, |
| 332 | { NULL } |
| 333 | }; |
| 334 | |
| 335 | #define SMSCSIO_TYPE_FDC 1 |
| 336 | #define SMSCSIO_TYPE_LPC 2 |
| 337 | #define SMSCSIO_TYPE_FLAT 4 |
| 338 | #define SMSCSIO_TYPE_PAGED 8 |
| 339 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 340 | static struct smsc_chip_address __initdata possible_addresses[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 342 | { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 343 | { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 344 | { 0xe0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 345 | { 0x2e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 346 | { 0x4e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 347 | { 0, 0 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | }; |
| 349 | |
| 350 | /* Globals */ |
| 351 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 352 | static struct smsc_ircc_cb *dev_self[] = { NULL, NULL }; |
| 353 | static unsigned short dev_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
| 355 | static inline void register_bank(int iobase, int bank) |
| 356 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 357 | outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)), |
| 358 | iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | |
| 362 | /******************************************************************************* |
| 363 | * |
| 364 | * |
| 365 | * SMSC-ircc stuff |
| 366 | * |
| 367 | * |
| 368 | *******************************************************************************/ |
| 369 | |
| 370 | /* |
| 371 | * Function smsc_ircc_init () |
| 372 | * |
| 373 | * Initialize chip. Just try to find out how many chips we are dealing with |
| 374 | * and where they are |
| 375 | */ |
| 376 | static int __init smsc_ircc_init(void) |
| 377 | { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 378 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
| 380 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 381 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 382 | ret = platform_driver_register(&smsc_ircc_driver); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 383 | if (ret) { |
| 384 | IRDA_ERROR("%s, Can't register driver!\n", driver_name); |
| 385 | return ret; |
| 386 | } |
| 387 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 388 | #ifdef CONFIG_PCI |
| 389 | if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) { |
| 390 | /* Ignore errors from preconfiguration */ |
| 391 | IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name); |
| 392 | } |
| 393 | #endif |
| 394 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 395 | dev_count = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 396 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 397 | if (ircc_fir > 0 && ircc_sir > 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir); |
| 399 | IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir); |
| 400 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 401 | if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq)) |
| 402 | ret = -ENODEV; |
| 403 | } else { |
Brice Goglin | 505db03 | 2005-09-06 15:19:25 -0700 | [diff] [blame] | 404 | ret = -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 406 | /* try user provided configuration register base address */ |
| 407 | if (ircc_cfg > 0) { |
| 408 | IRDA_MESSAGE(" Overriding configuration address " |
| 409 | "0x%04x\n", ircc_cfg); |
| 410 | if (!smsc_superio_fdc(ircc_cfg)) |
| 411 | ret = 0; |
| 412 | if (!smsc_superio_lpc(ircc_cfg)) |
| 413 | ret = 0; |
| 414 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 416 | if (smsc_ircc_look_for_chips() > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | ret = 0; |
| 418 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 419 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 420 | if (ret) |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 421 | platform_driver_unregister(&smsc_ircc_driver); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | return ret; |
| 424 | } |
| 425 | |
| 426 | /* |
| 427 | * Function smsc_ircc_open (firbase, sirbase, dma, irq) |
| 428 | * |
| 429 | * Try to open driver instance |
| 430 | * |
| 431 | */ |
| 432 | static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq) |
| 433 | { |
| 434 | struct smsc_ircc_cb *self; |
| 435 | struct net_device *dev; |
| 436 | int err; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 437 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 439 | |
| 440 | err = smsc_ircc_present(fir_base, sir_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 441 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | goto err_out; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | err = -ENOMEM; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 445 | if (dev_count >= ARRAY_SIZE(dev_self)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__); |
| 447 | goto err_out1; |
| 448 | } |
| 449 | |
| 450 | /* |
| 451 | * Allocate new instance of the driver |
| 452 | */ |
| 453 | dev = alloc_irdadev(sizeof(struct smsc_ircc_cb)); |
| 454 | if (!dev) { |
| 455 | IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__); |
| 456 | goto err_out1; |
| 457 | } |
| 458 | |
| 459 | SET_MODULE_OWNER(dev); |
| 460 | |
| 461 | dev->hard_start_xmit = smsc_ircc_hard_xmit_sir; |
| 462 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 463 | dev->tx_timeout = smsc_ircc_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 464 | dev->watchdog_timeo = HZ * 2; /* Allow enough time for speed change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | #endif |
| 466 | dev->open = smsc_ircc_net_open; |
| 467 | dev->stop = smsc_ircc_net_close; |
| 468 | dev->do_ioctl = smsc_ircc_net_ioctl; |
| 469 | dev->get_stats = smsc_ircc_net_get_stats; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 470 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 471 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | self->netdev = dev; |
| 473 | |
| 474 | /* Make ifconfig display some details */ |
| 475 | dev->base_addr = self->io.fir_base = fir_base; |
| 476 | dev->irq = self->io.irq = irq; |
| 477 | |
| 478 | /* Need to store self somewhere */ |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 479 | dev_self[dev_count] = self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | spin_lock_init(&self->lock); |
| 481 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 482 | self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE; |
| 484 | |
| 485 | self->rx_buff.head = |
| 486 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 487 | &self->rx_buff_dma, GFP_KERNEL); |
| 488 | if (self->rx_buff.head == NULL) { |
| 489 | IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n", |
| 490 | driver_name); |
| 491 | goto err_out2; |
| 492 | } |
| 493 | |
| 494 | self->tx_buff.head = |
| 495 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 496 | &self->tx_buff_dma, GFP_KERNEL); |
| 497 | if (self->tx_buff.head == NULL) { |
| 498 | IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n", |
| 499 | driver_name); |
| 500 | goto err_out3; |
| 501 | } |
| 502 | |
| 503 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 504 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 505 | |
| 506 | self->rx_buff.in_frame = FALSE; |
| 507 | self->rx_buff.state = OUTSIDE_FRAME; |
| 508 | self->tx_buff.data = self->tx_buff.head; |
| 509 | self->rx_buff.data = self->rx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 510 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | smsc_ircc_setup_qos(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | smsc_ircc_init_chip(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 514 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 515 | if (ircc_transceiver > 0 && |
| 516 | ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | self->transceiver = ircc_transceiver; |
| 518 | else |
| 519 | smsc_ircc_probe_transceiver(self); |
| 520 | |
| 521 | err = register_netdev(self->netdev); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 522 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | IRDA_ERROR("%s, Network device registration failed!\n", |
| 524 | driver_name); |
| 525 | goto err_out4; |
| 526 | } |
| 527 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 528 | self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME, |
| 529 | dev_count, NULL, 0); |
| 530 | if (IS_ERR(self->pldev)) { |
| 531 | err = PTR_ERR(self->pldev); |
| 532 | goto err_out5; |
| 533 | } |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 534 | platform_set_drvdata(self->pldev, self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
| 536 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 537 | dev_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
| 539 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 540 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 541 | err_out5: |
| 542 | unregister_netdev(self->netdev); |
| 543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | err_out4: |
| 545 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 546 | self->tx_buff.head, self->tx_buff_dma); |
| 547 | err_out3: |
| 548 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 549 | self->rx_buff.head, self->rx_buff_dma); |
| 550 | err_out2: |
| 551 | free_netdev(self->netdev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 552 | dev_self[dev_count] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | err_out1: |
| 554 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 555 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 556 | err_out: |
| 557 | return err; |
| 558 | } |
| 559 | |
| 560 | /* |
| 561 | * Function smsc_ircc_present(fir_base, sir_base) |
| 562 | * |
| 563 | * Check the smsc-ircc chip presence |
| 564 | * |
| 565 | */ |
| 566 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base) |
| 567 | { |
| 568 | unsigned char low, high, chip, config, dma, irq, version; |
| 569 | |
| 570 | if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT, |
| 571 | driver_name)) { |
| 572 | IRDA_WARNING("%s: can't get fir_base of 0x%03x\n", |
| 573 | __FUNCTION__, fir_base); |
| 574 | goto out1; |
| 575 | } |
| 576 | |
| 577 | if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT, |
| 578 | driver_name)) { |
| 579 | IRDA_WARNING("%s: can't get sir_base of 0x%03x\n", |
| 580 | __FUNCTION__, sir_base); |
| 581 | goto out2; |
| 582 | } |
| 583 | |
| 584 | register_bank(fir_base, 3); |
| 585 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 586 | high = inb(fir_base + IRCC_ID_HIGH); |
| 587 | low = inb(fir_base + IRCC_ID_LOW); |
| 588 | chip = inb(fir_base + IRCC_CHIP_ID); |
| 589 | version = inb(fir_base + IRCC_VERSION); |
| 590 | config = inb(fir_base + IRCC_INTERFACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | dma = config & IRCC_INTERFACE_DMA_MASK; |
| 592 | irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
| 593 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 594 | if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 595 | IRDA_WARNING("%s(), addr 0x%04x - no device found!\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | __FUNCTION__, fir_base); |
| 597 | goto out3; |
| 598 | } |
| 599 | IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, " |
| 600 | "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n", |
| 601 | chip & 0x0f, version, fir_base, sir_base, dma, irq); |
| 602 | |
| 603 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 604 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | out3: |
| 606 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 607 | out2: |
| 608 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 609 | out1: |
| 610 | return -ENODEV; |
| 611 | } |
| 612 | |
| 613 | /* |
| 614 | * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq) |
| 615 | * |
| 616 | * Setup I/O |
| 617 | * |
| 618 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 619 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, |
| 620 | unsigned int fir_base, unsigned int sir_base, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | u8 dma, u8 irq) |
| 622 | { |
| 623 | unsigned char config, chip_dma, chip_irq; |
| 624 | |
| 625 | register_bank(fir_base, 3); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 626 | config = inb(fir_base + IRCC_INTERFACE); |
| 627 | chip_dma = config & IRCC_INTERFACE_DMA_MASK; |
| 628 | chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
| 630 | self->io.fir_base = fir_base; |
| 631 | self->io.sir_base = sir_base; |
| 632 | self->io.fir_ext = SMSC_IRCC2_FIR_CHIP_IO_EXTENT; |
| 633 | self->io.sir_ext = SMSC_IRCC2_SIR_CHIP_IO_EXTENT; |
| 634 | self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE; |
| 635 | self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED; |
| 636 | |
| 637 | if (irq < 255) { |
| 638 | if (irq != chip_irq) |
| 639 | IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n", |
| 640 | driver_name, chip_irq, irq); |
| 641 | self->io.irq = irq; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 642 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | self->io.irq = chip_irq; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 644 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | if (dma < 255) { |
| 646 | if (dma != chip_dma) |
| 647 | IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n", |
| 648 | driver_name, chip_dma, dma); |
| 649 | self->io.dma = dma; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 650 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | self->io.dma = chip_dma; |
| 652 | |
| 653 | } |
| 654 | |
| 655 | /* |
| 656 | * Function smsc_ircc_setup_qos(self) |
| 657 | * |
| 658 | * Setup qos |
| 659 | * |
| 660 | */ |
| 661 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self) |
| 662 | { |
| 663 | /* Initialize QoS for this device */ |
| 664 | irda_init_max_qos_capabilies(&self->qos); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 667 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); |
| 668 | |
| 669 | self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME; |
| 670 | self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE; |
| 671 | irda_qos_bits_to_value(&self->qos); |
| 672 | } |
| 673 | |
| 674 | /* |
| 675 | * Function smsc_ircc_init_chip(self) |
| 676 | * |
| 677 | * Init chip |
| 678 | * |
| 679 | */ |
| 680 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self) |
| 681 | { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 682 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | |
| 684 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 685 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 686 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | |
| 688 | register_bank(iobase, 1); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 689 | outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A), |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 690 | iobase + IRCC_SCE_CFGA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | |
| 692 | #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 693 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 694 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 695 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 696 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 697 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 698 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 699 | (void) inb(iobase + IRCC_FIFO_THRESHOLD); |
| 700 | outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 701 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 702 | register_bank(iobase, 4); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 703 | outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | register_bank(iobase, 0); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 706 | outb(0, iobase + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
| 708 | smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 709 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | /* Power on device */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 711 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | /* |
| 715 | * Function smsc_ircc_net_ioctl (dev, rq, cmd) |
| 716 | * |
| 717 | * Process IOCTL commands for this device |
| 718 | * |
| 719 | */ |
| 720 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 721 | { |
| 722 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 723 | struct smsc_ircc_cb *self; |
| 724 | unsigned long flags; |
| 725 | int ret = 0; |
| 726 | |
| 727 | IRDA_ASSERT(dev != NULL, return -1;); |
| 728 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 729 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
| 731 | IRDA_ASSERT(self != NULL, return -1;); |
| 732 | |
| 733 | 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] | 734 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | switch (cmd) { |
| 736 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 737 | if (!capable(CAP_NET_ADMIN)) |
| 738 | ret = -EPERM; |
| 739 | else { |
| 740 | /* Make sure we are the only one touching |
| 741 | * self->io.speed and the hardware - Jean II */ |
| 742 | spin_lock_irqsave(&self->lock, flags); |
| 743 | smsc_ircc_change_speed(self, irq->ifr_baudrate); |
| 744 | spin_unlock_irqrestore(&self->lock, flags); |
| 745 | } |
| 746 | break; |
| 747 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 748 | if (!capable(CAP_NET_ADMIN)) { |
| 749 | ret = -EPERM; |
| 750 | break; |
| 751 | } |
| 752 | |
| 753 | irda_device_set_media_busy(self->netdev, TRUE); |
| 754 | break; |
| 755 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 756 | irq->ifr_receiving = smsc_ircc_is_receiving(self); |
| 757 | break; |
| 758 | #if 0 |
| 759 | case SIOCSDTRRTS: |
| 760 | if (!capable(CAP_NET_ADMIN)) { |
| 761 | ret = -EPERM; |
| 762 | break; |
| 763 | } |
| 764 | smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts); |
| 765 | break; |
| 766 | #endif |
| 767 | default: |
| 768 | ret = -EOPNOTSUPP; |
| 769 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | return ret; |
| 772 | } |
| 773 | |
| 774 | static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev) |
| 775 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 776 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | return &self->stats; |
| 779 | } |
| 780 | |
| 781 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 782 | /* |
| 783 | * Function smsc_ircc_timeout (struct net_device *dev) |
| 784 | * |
| 785 | * The networking timeout management. |
| 786 | * |
| 787 | */ |
| 788 | |
| 789 | static void smsc_ircc_timeout(struct net_device *dev) |
| 790 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 791 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | unsigned long flags; |
| 793 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n", |
| 795 | dev->name, self->io.speed); |
| 796 | spin_lock_irqsave(&self->lock, flags); |
| 797 | smsc_ircc_sir_start(self); |
| 798 | smsc_ircc_change_speed(self, self->io.speed); |
| 799 | dev->trans_start = jiffies; |
| 800 | netif_wake_queue(dev); |
| 801 | spin_unlock_irqrestore(&self->lock, flags); |
| 802 | } |
| 803 | #endif |
| 804 | |
| 805 | /* |
| 806 | * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev) |
| 807 | * |
| 808 | * Transmits the current frame until FIFO is full, then |
| 809 | * waits until the next transmit interrupt, and continues until the |
| 810 | * frame is transmitted. |
| 811 | */ |
| 812 | int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev) |
| 813 | { |
| 814 | struct smsc_ircc_cb *self; |
| 815 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | s32 speed; |
| 817 | |
| 818 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 819 | |
| 820 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 821 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 822 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | IRDA_ASSERT(self != NULL, return 0;); |
| 824 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 828 | spin_lock_irqsave(&self->lock, flags); |
| 829 | |
| 830 | /* Check if we need to change the speed */ |
| 831 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 832 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | /* Check for empty frame */ |
| 834 | if (!skb->len) { |
| 835 | /* |
| 836 | * We send frames one by one in SIR mode (no |
| 837 | * pipelining), so at this point, if we were sending |
| 838 | * a previous frame, we just received the interrupt |
| 839 | * telling us it is finished (UART_IIR_THRI). |
| 840 | * Therefore, waiting for the transmitter to really |
| 841 | * finish draining the fifo won't take too long. |
| 842 | * And the interrupt handler is not expected to run. |
| 843 | * - Jean II */ |
| 844 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 845 | smsc_ircc_change_speed(self, speed); |
| 846 | spin_unlock_irqrestore(&self->lock, flags); |
| 847 | dev_kfree_skb(skb); |
| 848 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 850 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | } |
| 852 | |
| 853 | /* Init tx buffer */ |
| 854 | self->tx_buff.data = self->tx_buff.head; |
| 855 | |
| 856 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 857 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | self->tx_buff.truesize); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 859 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | self->stats.tx_bytes += self->tx_buff.len; |
| 861 | |
| 862 | /* Turn on transmit finished interrupt. Will fire immediately! */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 863 | outb(UART_IER_THRI, self->io.sir_base + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | |
| 865 | spin_unlock_irqrestore(&self->lock, flags); |
| 866 | |
| 867 | dev_kfree_skb(skb); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | return 0; |
| 870 | } |
| 871 | |
| 872 | /* |
| 873 | * Function smsc_ircc_set_fir_speed (self, baud) |
| 874 | * |
| 875 | * Change the speed of the device |
| 876 | * |
| 877 | */ |
| 878 | static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed) |
| 879 | { |
| 880 | int fir_base, ir_mode, ctrl, fast; |
| 881 | |
| 882 | IRDA_ASSERT(self != NULL, return;); |
| 883 | fir_base = self->io.fir_base; |
| 884 | |
| 885 | self->io.speed = speed; |
| 886 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 887 | switch (speed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | default: |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 889 | case 576000: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 891 | ctrl = IRCC_CRC; |
| 892 | fast = 0; |
| 893 | IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__); |
| 894 | break; |
| 895 | case 1152000: |
| 896 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 897 | ctrl = IRCC_1152 | IRCC_CRC; |
| 898 | fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA; |
| 899 | IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", |
| 900 | __FUNCTION__); |
| 901 | break; |
| 902 | case 4000000: |
| 903 | ir_mode = IRCC_CFGA_IRDA_4PPM; |
| 904 | ctrl = IRCC_CRC; |
| 905 | fast = IRCC_LCR_A_FAST; |
| 906 | IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", |
| 907 | __FUNCTION__); |
| 908 | break; |
| 909 | } |
| 910 | #if 0 |
| 911 | Now in tranceiver! |
| 912 | /* This causes an interrupt */ |
| 913 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 914 | 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] | 915 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 916 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 918 | 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] | 919 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 921 | outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | } |
| 923 | |
| 924 | /* |
| 925 | * Function smsc_ircc_fir_start(self) |
| 926 | * |
| 927 | * Change the speed of the device |
| 928 | * |
| 929 | */ |
| 930 | static void smsc_ircc_fir_start(struct smsc_ircc_cb *self) |
| 931 | { |
| 932 | struct net_device *dev; |
| 933 | int fir_base; |
| 934 | |
| 935 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 936 | |
| 937 | IRDA_ASSERT(self != NULL, return;); |
| 938 | dev = self->netdev; |
| 939 | IRDA_ASSERT(dev != NULL, return;); |
| 940 | |
| 941 | fir_base = self->io.fir_base; |
| 942 | |
| 943 | /* Reset everything */ |
| 944 | |
| 945 | /* Install FIR transmit handler */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 946 | dev->hard_start_xmit = smsc_ircc_hard_xmit_fir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | |
| 948 | /* Clear FIFO */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 949 | 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] | 950 | |
| 951 | /* Enable interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 952 | /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | |
| 954 | register_bank(fir_base, 1); |
| 955 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 956 | /* Select the TX/RX interface */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 958 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 959 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 960 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 961 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 962 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 963 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 964 | (void) inb(fir_base + IRCC_FIFO_THRESHOLD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
| 966 | /* Enable SCE interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 967 | outb(0, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 969 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER); |
| 970 | outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | } |
| 972 | |
| 973 | /* |
| 974 | * Function smsc_ircc_fir_stop(self, baud) |
| 975 | * |
| 976 | * Change the speed of the device |
| 977 | * |
| 978 | */ |
| 979 | static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self) |
| 980 | { |
| 981 | int fir_base; |
| 982 | |
| 983 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | IRDA_ASSERT(self != NULL, return;); |
| 986 | |
| 987 | fir_base = self->io.fir_base; |
| 988 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 989 | /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/ |
| 990 | 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] | 991 | } |
| 992 | |
| 993 | |
| 994 | /* |
| 995 | * Function smsc_ircc_change_speed(self, baud) |
| 996 | * |
| 997 | * Change the speed of the device |
| 998 | * |
| 999 | * This function *must* be called with spinlock held, because it may |
| 1000 | * be called from the irq handler. - Jean II |
| 1001 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 1002 | 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] | 1003 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | int last_speed_was_sir; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1006 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__, speed); |
| 1008 | |
| 1009 | IRDA_ASSERT(self != NULL, return;); |
| 1010 | dev = self->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | |
| 1012 | last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED; |
| 1013 | |
| 1014 | #if 0 |
| 1015 | /* Temp Hack */ |
| 1016 | speed= 1152000; |
| 1017 | self->io.speed = speed; |
| 1018 | last_speed_was_sir = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1019 | smsc_ircc_fir_start(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1021 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1022 | if (self->io.speed == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | smsc_ircc_sir_start(self); |
| 1024 | |
| 1025 | #if 0 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1026 | if (!last_speed_was_sir) speed = self->io.speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | #endif |
| 1028 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1029 | if (self->io.speed != speed) |
| 1030 | smsc_ircc_set_transceiver_for_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | |
| 1032 | self->io.speed = speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1033 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1034 | if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
| 1035 | if (!last_speed_was_sir) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | smsc_ircc_fir_stop(self); |
| 1037 | smsc_ircc_sir_start(self); |
| 1038 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1039 | smsc_ircc_set_sir_speed(self, speed); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1040 | } else { |
| 1041 | if (last_speed_was_sir) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1042 | #if SMSC_IRCC2_C_SIR_STOP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | smsc_ircc_sir_stop(self); |
| 1044 | #endif |
| 1045 | smsc_ircc_fir_start(self); |
| 1046 | } |
| 1047 | smsc_ircc_set_fir_speed(self, speed); |
| 1048 | |
| 1049 | #if 0 |
| 1050 | self->tx_buff.len = 10; |
| 1051 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1052 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1053 | smsc_ircc_dma_xmit(self, 4000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | #endif |
| 1055 | /* Be ready for incoming frames */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1056 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1058 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | netif_wake_queue(dev); |
| 1060 | } |
| 1061 | |
| 1062 | /* |
| 1063 | * Function smsc_ircc_set_sir_speed (self, speed) |
| 1064 | * |
| 1065 | * Set speed of IrDA port to specified baudrate |
| 1066 | * |
| 1067 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 1068 | 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] | 1069 | { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1070 | int iobase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | int fcr; /* FIFO control reg */ |
| 1072 | int lcr; /* Line control reg */ |
| 1073 | int divisor; |
| 1074 | |
| 1075 | IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__, speed); |
| 1076 | |
| 1077 | IRDA_ASSERT(self != NULL, return;); |
| 1078 | iobase = self->io.sir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1079 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | /* Update accounting for new speed */ |
| 1081 | self->io.speed = speed; |
| 1082 | |
| 1083 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1084 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1086 | divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1087 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | fcr = UART_FCR_ENABLE_FIFO; |
| 1089 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1090 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and |
| 1092 | * 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] | 1093 | * about this timeout since it will always be fast enough. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1095 | fcr |= self->io.speed < 38400 ? |
| 1096 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1097 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | /* IrDA ports use 8N1 */ |
| 1099 | lcr = UART_LCR_WLEN8; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1100 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1101 | outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */ |
| 1102 | outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */ |
| 1103 | outb(divisor >> 8, iobase + UART_DLM); |
| 1104 | outb(lcr, iobase + UART_LCR); /* Set 8N1 */ |
| 1105 | outb(fcr, iobase + UART_FCR); /* Enable FIFO's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | |
| 1107 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1108 | 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] | 1109 | |
| 1110 | IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__, speed); |
| 1111 | } |
| 1112 | |
| 1113 | |
| 1114 | /* |
| 1115 | * Function smsc_ircc_hard_xmit_fir (skb, dev) |
| 1116 | * |
| 1117 | * Transmit the frame! |
| 1118 | * |
| 1119 | */ |
| 1120 | static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev) |
| 1121 | { |
| 1122 | struct smsc_ircc_cb *self; |
| 1123 | unsigned long flags; |
| 1124 | s32 speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | int mtt; |
| 1126 | |
| 1127 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1128 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | IRDA_ASSERT(self != NULL, return 0;); |
| 1130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | netif_stop_queue(dev); |
| 1132 | |
| 1133 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 1134 | spin_lock_irqsave(&self->lock, flags); |
| 1135 | |
| 1136 | /* Check if we need to change the speed after this frame */ |
| 1137 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1138 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | /* Check for empty frame */ |
| 1140 | if (!skb->len) { |
| 1141 | /* Note : you should make sure that speed changes |
| 1142 | * are not going to corrupt any outgoing frame. |
| 1143 | * Look at nsc-ircc for the gory details - Jean II */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1144 | smsc_ircc_change_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | spin_unlock_irqrestore(&self->lock, flags); |
| 1146 | dev_kfree_skb(skb); |
| 1147 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1148 | } |
| 1149 | |
| 1150 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | memcpy(self->tx_buff.head, skb->data, skb->len); |
| 1154 | |
| 1155 | self->tx_buff.len = skb->len; |
| 1156 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1157 | |
| 1158 | mtt = irda_get_mtt(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | if (mtt) { |
| 1160 | int bofs; |
| 1161 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1162 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | * Compute how many BOFs (STA or PA's) we need to waste the |
| 1164 | * min turn time given the speed of the link. |
| 1165 | */ |
| 1166 | bofs = mtt * (self->io.speed / 1000) / 8000; |
| 1167 | if (bofs > 4095) |
| 1168 | bofs = 4095; |
| 1169 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1170 | smsc_ircc_dma_xmit(self, bofs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | } else { |
| 1172 | /* Transmit frame */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1173 | smsc_ircc_dma_xmit(self, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | spin_unlock_irqrestore(&self->lock, flags); |
| 1177 | dev_kfree_skb(skb); |
| 1178 | |
| 1179 | return 0; |
| 1180 | } |
| 1181 | |
| 1182 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1183 | * Function smsc_ircc_dma_xmit (self, bofs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | * |
| 1185 | * Transmit data using DMA |
| 1186 | * |
| 1187 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1188 | 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] | 1189 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1190 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | u8 ctrl; |
| 1192 | |
| 1193 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1194 | #if 1 |
| 1195 | /* Disable Rx */ |
| 1196 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1197 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | #endif |
| 1199 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1200 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1201 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | |
| 1203 | self->io.direction = IO_XMIT; |
| 1204 | |
| 1205 | /* Set BOF additional count for generating the min turn time */ |
| 1206 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1207 | outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO); |
| 1208 | ctrl = inb(iobase + IRCC_CONTROL) & 0xf0; |
| 1209 | outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | |
| 1211 | /* Set max Tx frame size */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1212 | outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI); |
| 1213 | outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | |
| 1215 | /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | /* Enable burst mode chip Tx DMA */ |
| 1218 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1219 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1220 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | |
| 1222 | /* Setup DMA controller (must be done after enabling chip DMA) */ |
| 1223 | irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len, |
| 1224 | DMA_TX_MODE); |
| 1225 | |
| 1226 | /* Enable interrupt */ |
| 1227 | |
| 1228 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1229 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1230 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | /* Enable transmit */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1233 | 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] | 1234 | } |
| 1235 | |
| 1236 | /* |
| 1237 | * Function smsc_ircc_dma_xmit_complete (self) |
| 1238 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1239 | * 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] | 1240 | * by the interrupt handler |
| 1241 | * |
| 1242 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1243 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1245 | int iobase = self->io.fir_base; |
| 1246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1248 | #if 0 |
| 1249 | /* Disable Tx */ |
| 1250 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1251 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | #endif |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1253 | register_bank(iobase, 1); |
| 1254 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1255 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1256 | |
| 1257 | /* Check for underrun! */ |
| 1258 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1259 | if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | self->stats.tx_errors++; |
| 1261 | self->stats.tx_fifo_errors++; |
| 1262 | |
| 1263 | /* Reset error condition */ |
| 1264 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1265 | outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER); |
| 1266 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | } else { |
| 1268 | self->stats.tx_packets++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1269 | self->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1270 | } |
| 1271 | |
| 1272 | /* Check if it's time to change the speed */ |
| 1273 | if (self->new_speed) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1274 | smsc_ircc_change_speed(self, self->new_speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | self->new_speed = 0; |
| 1276 | } |
| 1277 | |
| 1278 | netif_wake_queue(self->netdev); |
| 1279 | } |
| 1280 | |
| 1281 | /* |
| 1282 | * Function smsc_ircc_dma_receive(self) |
| 1283 | * |
| 1284 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1285 | * if it starts to receive a frame. |
| 1286 | * |
| 1287 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1288 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1290 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1291 | #if 0 |
| 1292 | /* Turn off chip DMA */ |
| 1293 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1294 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1295 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | /* Disable Tx */ |
| 1299 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1300 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | |
| 1302 | /* Turn off chip DMA */ |
| 1303 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1304 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1305 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | |
| 1307 | self->io.direction = IO_RECV; |
| 1308 | self->rx_buff.data = self->rx_buff.head; |
| 1309 | |
| 1310 | /* Set max Rx frame size */ |
| 1311 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1312 | outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI); |
| 1313 | outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | |
| 1315 | /* Setup DMA controller */ |
| 1316 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1317 | DMA_RX_MODE); |
| 1318 | |
| 1319 | /* Enable burst mode chip Rx DMA */ |
| 1320 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1321 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1322 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | |
| 1324 | /* Enable interrupt */ |
| 1325 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1326 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1327 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | |
| 1329 | /* Enable receiver */ |
| 1330 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1331 | outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1332 | iobase + IRCC_LCR_B); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1333 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | return 0; |
| 1335 | } |
| 1336 | |
| 1337 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1338 | * Function smsc_ircc_dma_receive_complete(self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | * |
| 1340 | * Finished with receiving frames |
| 1341 | * |
| 1342 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1343 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | { |
| 1345 | struct sk_buff *skb; |
| 1346 | int len, msgcnt, lsr; |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1347 | int iobase = self->io.fir_base; |
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 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1350 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1352 | #if 0 |
| 1353 | /* Disable Rx */ |
| 1354 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1355 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1356 | #endif |
| 1357 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1358 | outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR); |
| 1359 | lsr= inb(iobase + IRCC_LSR); |
| 1360 | msgcnt = inb(iobase + IRCC_LCR_B) & 0x08; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | |
| 1362 | IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__, |
| 1363 | get_dma_residue(self->io.dma)); |
| 1364 | |
| 1365 | len = self->rx_buff.truesize - get_dma_residue(self->io.dma); |
| 1366 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1367 | /* Look for errors */ |
| 1368 | 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] | 1369 | self->stats.rx_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1370 | if (lsr & IRCC_LSR_FRAME_ERROR) |
| 1371 | self->stats.rx_frame_errors++; |
| 1372 | if (lsr & IRCC_LSR_CRC_ERROR) |
| 1373 | self->stats.rx_crc_errors++; |
| 1374 | if (lsr & IRCC_LSR_SIZE_ERROR) |
| 1375 | self->stats.rx_length_errors++; |
| 1376 | if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN)) |
| 1377 | self->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | return; |
| 1379 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1381 | /* Remove CRC */ |
| 1382 | len -= self->io.speed < 4000000 ? 2 : 4; |
| 1383 | |
| 1384 | if (len < 2 || len > 2050) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__, len); |
| 1386 | return; |
| 1387 | } |
| 1388 | IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__, msgcnt, len); |
| 1389 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1390 | skb = dev_alloc_skb(len + 1); |
| 1391 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1392 | IRDA_WARNING("%s(), memory squeeze, dropping frame.\n", |
| 1393 | __FUNCTION__); |
| 1394 | return; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1395 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1396 | /* Make sure IP header gets aligned */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1397 | skb_reserve(skb, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | |
| 1399 | memcpy(skb_put(skb, len), self->rx_buff.data, len); |
| 1400 | self->stats.rx_packets++; |
| 1401 | self->stats.rx_bytes += len; |
| 1402 | |
| 1403 | skb->dev = self->netdev; |
| 1404 | skb->mac.raw = skb->data; |
| 1405 | skb->protocol = htons(ETH_P_IRDA); |
| 1406 | netif_rx(skb); |
| 1407 | } |
| 1408 | |
| 1409 | /* |
| 1410 | * Function smsc_ircc_sir_receive (self) |
| 1411 | * |
| 1412 | * Receive one frame from the infrared port |
| 1413 | * |
| 1414 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1415 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | { |
| 1417 | int boguscount = 0; |
| 1418 | int iobase; |
| 1419 | |
| 1420 | IRDA_ASSERT(self != NULL, return;); |
| 1421 | |
| 1422 | iobase = self->io.sir_base; |
| 1423 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1424 | /* |
| 1425 | * Receive all characters in Rx FIFO, unwrap and unstuff them. |
| 1426 | * async_unwrap_char will deliver all found frames |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | */ |
| 1428 | do { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1429 | async_unwrap_char(self->netdev, &self->stats, &self->rx_buff, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1430 | inb(iobase + UART_RX)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | |
| 1432 | /* Make sure we don't stay here to long */ |
| 1433 | if (boguscount++ > 32) { |
| 1434 | IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__); |
| 1435 | break; |
| 1436 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1437 | } while (inb(iobase + UART_LSR) & UART_LSR_DR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | } |
| 1439 | |
| 1440 | |
| 1441 | /* |
| 1442 | * Function smsc_ircc_interrupt (irq, dev_id, regs) |
| 1443 | * |
| 1444 | * An interrupt from the chip has arrived. Time to do some work |
| 1445 | * |
| 1446 | */ |
| 1447 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
| 1448 | { |
| 1449 | struct net_device *dev = (struct net_device *) dev_id; |
| 1450 | struct smsc_ircc_cb *self; |
| 1451 | int iobase, iir, lcra, lsr; |
| 1452 | irqreturn_t ret = IRQ_NONE; |
| 1453 | |
| 1454 | if (dev == NULL) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1455 | printk(KERN_WARNING "%s: irq %d for unknown device.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | driver_name, irq); |
| 1457 | goto irq_ret; |
| 1458 | } |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1459 | |
| 1460 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | IRDA_ASSERT(self != NULL, return IRQ_NONE;); |
| 1462 | |
| 1463 | /* Serialise the interrupt handler in various CPUs, stop Tx path */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1464 | spin_lock(&self->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1465 | |
| 1466 | /* Check if we should use the SIR interrupt handler */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1467 | if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | ret = smsc_ircc_interrupt_sir(dev); |
| 1469 | goto irq_ret_unlock; |
| 1470 | } |
| 1471 | |
| 1472 | iobase = self->io.fir_base; |
| 1473 | |
| 1474 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1475 | iir = inb(iobase + IRCC_IIR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1476 | if (iir == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | goto irq_ret_unlock; |
| 1478 | ret = IRQ_HANDLED; |
| 1479 | |
| 1480 | /* Disable interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1481 | outb(0, iobase + IRCC_IER); |
| 1482 | lcra = inb(iobase + IRCC_LCR_A); |
| 1483 | lsr = inb(iobase + IRCC_LSR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1484 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__, iir); |
| 1486 | |
| 1487 | if (iir & IRCC_IIR_EOM) { |
| 1488 | if (self->io.direction == IO_RECV) |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1489 | smsc_ircc_dma_receive_complete(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | else |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1491 | smsc_ircc_dma_xmit_complete(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1492 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1493 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | } |
| 1495 | |
| 1496 | if (iir & IRCC_IIR_ACTIVE_FRAME) { |
| 1497 | /*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/ |
| 1498 | } |
| 1499 | |
| 1500 | /* Enable interrupts again */ |
| 1501 | |
| 1502 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1503 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | |
| 1505 | irq_ret_unlock: |
| 1506 | spin_unlock(&self->lock); |
| 1507 | irq_ret: |
| 1508 | return ret; |
| 1509 | } |
| 1510 | |
| 1511 | /* |
| 1512 | * Function irport_interrupt_sir (irq, dev_id, regs) |
| 1513 | * |
| 1514 | * Interrupt handler for SIR modes |
| 1515 | */ |
| 1516 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev) |
| 1517 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1518 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | int boguscount = 0; |
| 1520 | int iobase; |
| 1521 | int iir, lsr; |
| 1522 | |
| 1523 | /* Already locked comming here in smsc_ircc_interrupt() */ |
| 1524 | /*spin_lock(&self->lock);*/ |
| 1525 | |
| 1526 | iobase = self->io.sir_base; |
| 1527 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1528 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | if (iir == 0) |
| 1530 | return IRQ_NONE; |
| 1531 | while (iir) { |
| 1532 | /* Clear interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1533 | lsr = inb(iobase + UART_LSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1535 | IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | __FUNCTION__, iir, lsr, iobase); |
| 1537 | |
| 1538 | switch (iir) { |
| 1539 | case UART_IIR_RLSI: |
| 1540 | IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__); |
| 1541 | break; |
| 1542 | case UART_IIR_RDI: |
| 1543 | /* Receive interrupt */ |
| 1544 | smsc_ircc_sir_receive(self); |
| 1545 | break; |
| 1546 | case UART_IIR_THRI: |
| 1547 | if (lsr & UART_LSR_THRE) |
| 1548 | /* Transmitter ready for data */ |
| 1549 | smsc_ircc_sir_write_wakeup(self); |
| 1550 | break; |
| 1551 | default: |
| 1552 | IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", |
| 1553 | __FUNCTION__, iir); |
| 1554 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1555 | } |
| 1556 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | /* Make sure we don't stay here to long */ |
| 1558 | if (boguscount++ > 100) |
| 1559 | break; |
| 1560 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1561 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | } |
| 1563 | /*spin_unlock(&self->lock);*/ |
| 1564 | return IRQ_HANDLED; |
| 1565 | } |
| 1566 | |
| 1567 | |
| 1568 | #if 0 /* unused */ |
| 1569 | /* |
| 1570 | * Function ircc_is_receiving (self) |
| 1571 | * |
| 1572 | * Return TRUE is we are currently receiving a frame |
| 1573 | * |
| 1574 | */ |
| 1575 | static int ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1576 | { |
| 1577 | int status = FALSE; |
| 1578 | /* int iobase; */ |
| 1579 | |
| 1580 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1581 | |
| 1582 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 1583 | |
| 1584 | IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__, |
| 1585 | get_dma_residue(self->io.dma)); |
| 1586 | |
| 1587 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1588 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | return status; |
| 1590 | } |
| 1591 | #endif /* unused */ |
| 1592 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1593 | static int smsc_ircc_request_irq(struct smsc_ircc_cb *self) |
| 1594 | { |
| 1595 | int error; |
| 1596 | |
| 1597 | error = request_irq(self->io.irq, smsc_ircc_interrupt, 0, |
| 1598 | self->netdev->name, self->netdev); |
| 1599 | if (error) |
| 1600 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n", |
| 1601 | __FUNCTION__, self->io.irq, error); |
| 1602 | |
| 1603 | return error; |
| 1604 | } |
| 1605 | |
| 1606 | static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self) |
| 1607 | { |
| 1608 | unsigned long flags; |
| 1609 | |
| 1610 | spin_lock_irqsave(&self->lock, flags); |
| 1611 | |
| 1612 | self->io.speed = 0; |
| 1613 | smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
| 1614 | |
| 1615 | spin_unlock_irqrestore(&self->lock, flags); |
| 1616 | } |
| 1617 | |
| 1618 | static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self) |
| 1619 | { |
| 1620 | int iobase = self->io.fir_base; |
| 1621 | unsigned long flags; |
| 1622 | |
| 1623 | spin_lock_irqsave(&self->lock, flags); |
| 1624 | |
| 1625 | register_bank(iobase, 0); |
| 1626 | outb(0, iobase + IRCC_IER); |
| 1627 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 1628 | outb(0x00, iobase + IRCC_MASTER); |
| 1629 | |
| 1630 | spin_unlock_irqrestore(&self->lock, flags); |
| 1631 | } |
| 1632 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | |
| 1634 | /* |
| 1635 | * Function smsc_ircc_net_open (dev) |
| 1636 | * |
| 1637 | * Start the device |
| 1638 | * |
| 1639 | */ |
| 1640 | static int smsc_ircc_net_open(struct net_device *dev) |
| 1641 | { |
| 1642 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | char hwname[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | |
| 1645 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1646 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1648 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1650 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1651 | if (self->io.suspended) { |
| 1652 | IRDA_DEBUG(0, "%s(), device is suspended\n", __FUNCTION__); |
| 1653 | return -EAGAIN; |
| 1654 | } |
| 1655 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1656 | if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | (void *) dev)) { |
| 1658 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n", |
| 1659 | __FUNCTION__, self->io.irq); |
| 1660 | return -EAGAIN; |
| 1661 | } |
| 1662 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1663 | smsc_ircc_start_interrupts(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | /* Give self a hardware name */ |
| 1666 | /* It would be cool to offer the chip revision here - Jean II */ |
| 1667 | sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base); |
| 1668 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1669 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | * Open new IrLAP layer instance, now that everything should be |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1671 | * initialized properly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | */ |
| 1673 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 1674 | |
| 1675 | /* |
| 1676 | * Always allocate the DMA channel after the IRQ, |
| 1677 | * and clean up on failure. |
| 1678 | */ |
| 1679 | if (request_dma(self->io.dma, dev->name)) { |
| 1680 | smsc_ircc_net_close(dev); |
| 1681 | |
| 1682 | IRDA_WARNING("%s(), unable to allocate DMA=%d\n", |
| 1683 | __FUNCTION__, self->io.dma); |
| 1684 | return -EAGAIN; |
| 1685 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1686 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | netif_start_queue(dev); |
| 1688 | |
| 1689 | return 0; |
| 1690 | } |
| 1691 | |
| 1692 | /* |
| 1693 | * Function smsc_ircc_net_close (dev) |
| 1694 | * |
| 1695 | * Stop the device |
| 1696 | * |
| 1697 | */ |
| 1698 | static int smsc_ircc_net_close(struct net_device *dev) |
| 1699 | { |
| 1700 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | |
| 1702 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1705 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1707 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1708 | /* Stop device */ |
| 1709 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1710 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1711 | /* Stop and remove instance of IrLAP */ |
| 1712 | if (self->irlap) |
| 1713 | irlap_close(self->irlap); |
| 1714 | self->irlap = NULL; |
| 1715 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1716 | smsc_ircc_stop_interrupts(self); |
| 1717 | |
| 1718 | /* if we are called from smsc_ircc_resume we don't have IRQ reserved */ |
| 1719 | if (!self->io.suspended) |
| 1720 | free_irq(self->io.irq, dev); |
| 1721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1722 | disable_dma(self->io.dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | free_dma(self->io.dma); |
| 1724 | |
| 1725 | return 0; |
| 1726 | } |
| 1727 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1728 | 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] | 1729 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1730 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1731 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1732 | if (!self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1733 | IRDA_DEBUG(1, "%s, Suspending\n", driver_name); |
| 1734 | |
| 1735 | rtnl_lock(); |
| 1736 | if (netif_running(self->netdev)) { |
| 1737 | netif_device_detach(self->netdev); |
| 1738 | smsc_ircc_stop_interrupts(self); |
| 1739 | free_irq(self->io.irq, self->netdev); |
| 1740 | disable_dma(self->io.dma); |
| 1741 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1742 | self->io.suspended = 1; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1743 | rtnl_unlock(); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1744 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1745 | |
| 1746 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | } |
| 1748 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1749 | static int smsc_ircc_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1751 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1753 | if (self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1754 | IRDA_DEBUG(1, "%s, Waking up\n", driver_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1756 | rtnl_lock(); |
| 1757 | smsc_ircc_init_chip(self); |
| 1758 | if (netif_running(self->netdev)) { |
| 1759 | if (smsc_ircc_request_irq(self)) { |
| 1760 | /* |
| 1761 | * Don't fail resume process, just kill this |
| 1762 | * network interface |
| 1763 | */ |
| 1764 | unregister_netdevice(self->netdev); |
| 1765 | } else { |
| 1766 | enable_dma(self->io.dma); |
| 1767 | smsc_ircc_start_interrupts(self); |
| 1768 | netif_device_attach(self->netdev); |
| 1769 | } |
| 1770 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1771 | self->io.suspended = 0; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1772 | rtnl_unlock(); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1773 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | return 0; |
| 1775 | } |
| 1776 | |
| 1777 | /* |
| 1778 | * Function smsc_ircc_close (self) |
| 1779 | * |
| 1780 | * Close driver instance |
| 1781 | * |
| 1782 | */ |
| 1783 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self) |
| 1784 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1786 | |
| 1787 | IRDA_ASSERT(self != NULL, return -1;); |
| 1788 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1789 | platform_device_unregister(self->pldev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1790 | |
| 1791 | /* Remove netdevice */ |
| 1792 | unregister_netdev(self->netdev); |
| 1793 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1794 | smsc_ircc_stop_interrupts(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1795 | |
| 1796 | /* Release the PORTS that this driver is using */ |
| 1797 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
| 1798 | self->io.fir_base); |
| 1799 | |
| 1800 | release_region(self->io.fir_base, self->io.fir_ext); |
| 1801 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1802 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | self->io.sir_base); |
| 1804 | |
| 1805 | release_region(self->io.sir_base, self->io.sir_ext); |
| 1806 | |
| 1807 | if (self->tx_buff.head) |
| 1808 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 1809 | self->tx_buff.head, self->tx_buff_dma); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1811 | if (self->rx_buff.head) |
| 1812 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 1813 | self->rx_buff.head, self->rx_buff_dma); |
| 1814 | |
| 1815 | free_netdev(self->netdev); |
| 1816 | |
| 1817 | return 0; |
| 1818 | } |
| 1819 | |
| 1820 | static void __exit smsc_ircc_cleanup(void) |
| 1821 | { |
| 1822 | int i; |
| 1823 | |
| 1824 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1825 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1826 | for (i = 0; i < 2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | if (dev_self[i]) |
| 1828 | smsc_ircc_close(dev_self[i]); |
| 1829 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1830 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1831 | platform_driver_unregister(&smsc_ircc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | } |
| 1833 | |
| 1834 | /* |
| 1835 | * Start SIR operations |
| 1836 | * |
| 1837 | * This function *must* be called with spinlock held, because it may |
| 1838 | * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II |
| 1839 | */ |
| 1840 | void smsc_ircc_sir_start(struct smsc_ircc_cb *self) |
| 1841 | { |
| 1842 | struct net_device *dev; |
| 1843 | int fir_base, sir_base; |
| 1844 | |
| 1845 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1846 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1847 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1848 | dev = self->netdev; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1849 | IRDA_ASSERT(dev != NULL, return;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1850 | dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir; |
| 1851 | |
| 1852 | fir_base = self->io.fir_base; |
| 1853 | sir_base = self->io.sir_base; |
| 1854 | |
| 1855 | /* Reset everything */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1856 | outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | |
| 1858 | #if SMSC_IRCC2_C_SIR_STOP |
| 1859 | /*smsc_ircc_sir_stop(self);*/ |
| 1860 | #endif |
| 1861 | |
| 1862 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1863 | 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] | 1864 | |
| 1865 | /* Initialize UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1866 | outb(UART_LCR_WLEN8, sir_base + UART_LCR); /* Reset DLAB */ |
| 1867 | 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] | 1868 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1870 | 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] | 1871 | |
| 1872 | IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__); |
| 1873 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1874 | outb(0x00, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | } |
| 1876 | |
| 1877 | #if SMSC_IRCC2_C_SIR_STOP |
| 1878 | void smsc_ircc_sir_stop(struct smsc_ircc_cb *self) |
| 1879 | { |
| 1880 | int iobase; |
| 1881 | |
| 1882 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1883 | iobase = self->io.sir_base; |
| 1884 | |
| 1885 | /* Reset UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1886 | outb(0, iobase + UART_MCR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1889 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | } |
| 1891 | #endif |
| 1892 | |
| 1893 | /* |
| 1894 | * Function smsc_sir_write_wakeup (self) |
| 1895 | * |
| 1896 | * Called by the SIR interrupt handler when there's room for more data. |
| 1897 | * If we have more packets to send, we send them here. |
| 1898 | * |
| 1899 | */ |
| 1900 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self) |
| 1901 | { |
| 1902 | int actual = 0; |
| 1903 | int iobase; |
| 1904 | int fcr; |
| 1905 | |
| 1906 | IRDA_ASSERT(self != NULL, return;); |
| 1907 | |
| 1908 | IRDA_DEBUG(4, "%s\n", __FUNCTION__); |
| 1909 | |
| 1910 | iobase = self->io.sir_base; |
| 1911 | |
| 1912 | /* Finished with frame? */ |
| 1913 | if (self->tx_buff.len > 0) { |
| 1914 | /* Write data left in transmit buffer */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1915 | actual = smsc_ircc_sir_write(iobase, self->io.fifo_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | self->tx_buff.data, self->tx_buff.len); |
| 1917 | self->tx_buff.data += actual; |
| 1918 | self->tx_buff.len -= actual; |
| 1919 | } else { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1920 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1921 | /*if (self->tx_buff.len ==0) {*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1922 | |
| 1923 | /* |
| 1924 | * Now serial buffer is almost free & we can start |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | * transmission of another packet. But first we must check |
| 1926 | * if we need to change the speed of the hardware |
| 1927 | */ |
| 1928 | if (self->new_speed) { |
| 1929 | IRDA_DEBUG(5, "%s(), Changing speed to %d.\n", |
| 1930 | __FUNCTION__, self->new_speed); |
| 1931 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 1932 | smsc_ircc_change_speed(self, self->new_speed); |
| 1933 | self->new_speed = 0; |
| 1934 | } else { |
| 1935 | /* Tell network layer that we want more frames */ |
| 1936 | netif_wake_queue(self->netdev); |
| 1937 | } |
| 1938 | self->stats.tx_packets++; |
| 1939 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1940 | if (self->io.speed <= 115200) { |
| 1941 | /* |
| 1942 | * Reset Rx FIFO to make sure that all reflected transmit data |
| 1943 | * is discarded. This is needed for half duplex operation |
| 1944 | */ |
| 1945 | fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR; |
| 1946 | fcr |= self->io.speed < 38400 ? |
| 1947 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
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 | outb(fcr, iobase + UART_FCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1951 | /* Turn on receive interrupts */ |
| 1952 | outb(UART_IER_RDI, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | } |
| 1954 | } |
| 1955 | } |
| 1956 | |
| 1957 | /* |
| 1958 | * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len) |
| 1959 | * |
| 1960 | * Fill Tx FIFO with transmit data |
| 1961 | * |
| 1962 | */ |
| 1963 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) |
| 1964 | { |
| 1965 | int actual = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | /* Tx FIFO should be empty! */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1968 | if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1969 | IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__); |
| 1970 | return 0; |
| 1971 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1972 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | /* Fill FIFO with current frame */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1974 | while (fifo_size-- > 0 && actual < len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | /* Transmit next byte */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1976 | outb(buf[actual], iobase + UART_TX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | actual++; |
| 1978 | } |
| 1979 | return actual; |
| 1980 | } |
| 1981 | |
| 1982 | /* |
| 1983 | * Function smsc_ircc_is_receiving (self) |
| 1984 | * |
| 1985 | * Returns true is we are currently receiving data |
| 1986 | * |
| 1987 | */ |
| 1988 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1989 | { |
| 1990 | return (self->rx_buff.state != OUTSIDE_FRAME); |
| 1991 | } |
| 1992 | |
| 1993 | |
| 1994 | /* |
| 1995 | * Function smsc_ircc_probe_transceiver(self) |
| 1996 | * |
| 1997 | * Tries to find the used Transceiver |
| 1998 | * |
| 1999 | */ |
| 2000 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self) |
| 2001 | { |
| 2002 | unsigned int i; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2003 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2004 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2005 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2006 | for (i = 0; smsc_transceivers[i].name != NULL; i++) |
| 2007 | if (smsc_transceivers[i].probe(self->io.fir_base)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | IRDA_MESSAGE(" %s transceiver found\n", |
| 2009 | smsc_transceivers[i].name); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2010 | self->transceiver= i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | return; |
| 2012 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | IRDA_MESSAGE("No transceiver found. Defaulting to %s\n", |
| 2015 | smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2016 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2017 | self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2018 | } |
| 2019 | |
| 2020 | |
| 2021 | /* |
| 2022 | * Function smsc_ircc_set_transceiver_for_speed(self, speed) |
| 2023 | * |
| 2024 | * Set the transceiver according to the speed |
| 2025 | * |
| 2026 | */ |
| 2027 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed) |
| 2028 | { |
| 2029 | unsigned int trx; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2031 | trx = self->transceiver; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2032 | if (trx > 0) |
| 2033 | smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | } |
| 2035 | |
| 2036 | /* |
| 2037 | * Function smsc_ircc_wait_hw_transmitter_finish () |
| 2038 | * |
| 2039 | * Wait for the real end of HW transmission |
| 2040 | * |
| 2041 | * The UART is a strict FIFO, and we get called only when we have finished |
| 2042 | * pushing data to the FIFO, so the maximum amount of time we must wait |
| 2043 | * is only for the FIFO to drain out. |
| 2044 | * |
| 2045 | * We use a simple calibrated loop. We may need to adjust the loop |
| 2046 | * delay (udelay) to balance I/O traffic and latency. And we also need to |
| 2047 | * adjust the maximum timeout. |
| 2048 | * It would probably be better to wait for the proper interrupt, |
| 2049 | * but it doesn't seem to be available. |
| 2050 | * |
| 2051 | * We can't use jiffies or kernel timers because : |
| 2052 | * 1) We are called from the interrupt handler, which disable softirqs, |
| 2053 | * so jiffies won't be increased |
| 2054 | * 2) Jiffies granularity is usually very coarse (10ms), and we don't |
| 2055 | * want to wait that long to detect stuck hardware. |
| 2056 | * Jean II |
| 2057 | */ |
| 2058 | |
| 2059 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self) |
| 2060 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2061 | int iobase = self->io.sir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2063 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2064 | /* Calibrated busy loop */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2065 | while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | udelay(1); |
| 2067 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2068 | if (count == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__); |
| 2070 | } |
| 2071 | |
| 2072 | |
| 2073 | /* PROBING |
| 2074 | * |
| 2075 | * |
| 2076 | */ |
| 2077 | |
| 2078 | static int __init smsc_ircc_look_for_chips(void) |
| 2079 | { |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2080 | struct smsc_chip_address *address; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2081 | char *type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | unsigned int cfg_base, found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2083 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | found = 0; |
| 2085 | address = possible_addresses; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2086 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2087 | while (address->cfg_base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2088 | cfg_base = address->cfg_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2089 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | /*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] | 2091 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2092 | if (address->type & SMSCSIO_TYPE_FDC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | type = "FDC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2094 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2095 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type)) |
| 2096 | found++; |
| 2097 | |
| 2098 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2099 | if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type)) |
| 2100 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2102 | if (address->type & SMSCSIO_TYPE_LPC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | type = "LPC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2104 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2105 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type)) |
| 2106 | found++; |
| 2107 | |
| 2108 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2109 | if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type)) |
| 2110 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2111 | } |
| 2112 | address++; |
| 2113 | } |
| 2114 | return found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2115 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2116 | |
| 2117 | /* |
| 2118 | * Function smsc_superio_flat (chip, base, type) |
| 2119 | * |
| 2120 | * Try to get configuration of a smc SuperIO chip with flat register model |
| 2121 | * |
| 2122 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2123 | 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] | 2124 | { |
| 2125 | unsigned short firbase, sirbase; |
| 2126 | u8 mode, dma, irq; |
| 2127 | int ret = -ENODEV; |
| 2128 | |
| 2129 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2130 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2131 | if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | return ret; |
| 2133 | |
| 2134 | outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2135 | mode = inb(cfgbase + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2137 | /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2138 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2139 | if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__); |
| 2141 | |
| 2142 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2143 | sirbase = inb(cfgbase + 1) << 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2145 | /* FIR iobase */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2146 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2147 | firbase = inb(cfgbase + 1) << 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | |
| 2149 | /* DMA */ |
| 2150 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2151 | dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | /* IRQ */ |
| 2154 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2155 | irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | |
| 2157 | IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__, firbase, sirbase, dma, irq, mode); |
| 2158 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2159 | if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0) |
| 2160 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | /* Exit configuration */ |
| 2163 | outb(SMSCSIO_CFGEXITKEY, cfgbase); |
| 2164 | |
| 2165 | return ret; |
| 2166 | } |
| 2167 | |
| 2168 | /* |
| 2169 | * Function smsc_superio_paged (chip, base, type) |
| 2170 | * |
| 2171 | * Try to get configuration of a smc SuperIO chip with paged register model |
| 2172 | * |
| 2173 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2174 | 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] | 2175 | { |
| 2176 | unsigned short fir_io, sir_io; |
| 2177 | int ret = -ENODEV; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2179 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2180 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2181 | if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2182 | return ret; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | /* Select logical device (UART2) */ |
| 2185 | outb(0x07, cfg_base); |
| 2186 | outb(0x05, cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2188 | /* SIR iobase */ |
| 2189 | outb(0x60, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2190 | sir_io = inb(cfg_base + 1) << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | outb(0x61, cfg_base); |
| 2192 | sir_io |= inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | /* Read FIR base */ |
| 2195 | outb(0x62, cfg_base); |
| 2196 | fir_io = inb(cfg_base + 1) << 8; |
| 2197 | outb(0x63, cfg_base); |
| 2198 | fir_io |= inb(cfg_base + 1); |
| 2199 | outb(0x2b, cfg_base); /* ??? */ |
| 2200 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2201 | if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0) |
| 2202 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2203 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | /* Exit configuration */ |
| 2205 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2206 | |
| 2207 | return ret; |
| 2208 | } |
| 2209 | |
| 2210 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2211 | static int __init smsc_access(unsigned short cfg_base, unsigned char reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | { |
| 2213 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2214 | |
| 2215 | outb(reg, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2216 | return inb(cfg_base) != reg ? -1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | } |
| 2218 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2219 | 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] | 2220 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2221 | u8 devid, xdevid, rev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | |
| 2223 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2224 | |
| 2225 | /* Leave configuration */ |
| 2226 | |
| 2227 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2228 | |
| 2229 | if (inb(cfg_base) == SMSCSIO_CFGEXITKEY) /* not a smc superio chip */ |
| 2230 | return NULL; |
| 2231 | |
| 2232 | outb(reg, cfg_base); |
| 2233 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2234 | xdevid = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | |
| 2236 | /* Enter configuration */ |
| 2237 | |
| 2238 | outb(SMSCSIO_CFGACCESSKEY, cfg_base); |
| 2239 | |
| 2240 | #if 0 |
| 2241 | if (smsc_access(cfg_base,0x55)) /* send second key and check */ |
| 2242 | return NULL; |
| 2243 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2245 | /* probe device ID */ |
| 2246 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2247 | if (smsc_access(cfg_base, reg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | return NULL; |
| 2249 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2250 | devid = inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2251 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2252 | if (devid == 0 || devid == 0xff) /* typical values for unused port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2253 | return NULL; |
| 2254 | |
| 2255 | /* probe revision ID */ |
| 2256 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2257 | if (smsc_access(cfg_base, reg + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2258 | return NULL; |
| 2259 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2260 | rev = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2262 | if (rev >= 128) /* i think this will make no sense */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | return NULL; |
| 2264 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2265 | if (devid == xdevid) /* protection against false positives */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2266 | return NULL; |
| 2267 | |
| 2268 | /* Check for expected device ID; are there others? */ |
| 2269 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2270 | while (chip->devid != devid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2271 | |
| 2272 | chip++; |
| 2273 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2274 | if (chip->name == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | return NULL; |
| 2276 | } |
| 2277 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2278 | IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n", |
| 2279 | devid, rev, cfg_base, type, chip->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2281 | if (chip->rev > rev) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2282 | IRDA_MESSAGE("Revision higher than expected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | return NULL; |
| 2284 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2285 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2286 | if (chip->flags & NoIRDA) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2287 | IRDA_MESSAGE("chipset does not support IRDA\n"); |
| 2288 | |
| 2289 | return chip; |
| 2290 | } |
| 2291 | |
| 2292 | static int __init smsc_superio_fdc(unsigned short cfg_base) |
| 2293 | { |
| 2294 | int ret = -1; |
| 2295 | |
| 2296 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2297 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2298 | __FUNCTION__, cfg_base); |
| 2299 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2300 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") || |
| 2301 | !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | ret = 0; |
| 2303 | |
| 2304 | release_region(cfg_base, 2); |
| 2305 | } |
| 2306 | |
| 2307 | return ret; |
| 2308 | } |
| 2309 | |
| 2310 | static int __init smsc_superio_lpc(unsigned short cfg_base) |
| 2311 | { |
| 2312 | int ret = -1; |
| 2313 | |
| 2314 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2315 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2316 | __FUNCTION__, cfg_base); |
| 2317 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2318 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") || |
| 2319 | !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | ret = 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2321 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2322 | release_region(cfg_base, 2); |
| 2323 | } |
| 2324 | return ret; |
| 2325 | } |
| 2326 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2327 | /* |
| 2328 | * Look for some specific subsystem setups that need |
| 2329 | * pre-configuration not properly done by the BIOS (especially laptops) |
| 2330 | * This code is based in part on smcinit.c, tosh1800-smcinit.c |
| 2331 | * and tosh2450-smcinit.c. The table lists the device entries |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2332 | * for ISA bridges with an LPC (Low Pin Count) controller which |
| 2333 | * handles the communication with the SMSC device. After the LPC |
| 2334 | * controller is initialized through PCI, the SMSC device is initialized |
| 2335 | * through a dedicated port in the ISA port-mapped I/O area, this latter |
| 2336 | * area is used to configure the SMSC device with default |
| 2337 | * SIR and FIR I/O ports, DMA and IRQ. Different vendors have |
| 2338 | * used different sets of parameters and different control port |
| 2339 | * addresses making a subsystem device table necessary. |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2340 | */ |
| 2341 | #ifdef CONFIG_PCI |
| 2342 | #define PCIID_VENDOR_INTEL 0x8086 |
| 2343 | #define PCIID_VENDOR_ALI 0x10b9 |
| 2344 | static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __devinitdata = { |
| 2345 | { |
| 2346 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2347 | .device = 0x24cc, |
| 2348 | .subvendor = 0x103c, |
| 2349 | .subdevice = 0x088c, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2350 | /* Quite certain these are the same for nc8000 as for nc6000 */ |
| 2351 | .sir_io = 0x02f8, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2352 | .fir_io = 0x0130, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2353 | .fir_irq = 0x05, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2354 | .fir_dma = 0x03, |
| 2355 | .cfg_base = 0x004e, |
| 2356 | .preconfigure = preconfigure_through_82801, |
| 2357 | .name = "HP nc8000", |
| 2358 | }, |
| 2359 | { |
| 2360 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2361 | .device = 0x24cc, |
| 2362 | .subvendor = 0x103c, |
| 2363 | .subdevice = 0x0890, |
| 2364 | .sir_io = 0x02f8, |
| 2365 | .fir_io = 0x0130, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2366 | .fir_irq = 0x05, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2367 | .fir_dma = 0x03, |
| 2368 | .cfg_base = 0x004e, |
| 2369 | .preconfigure = preconfigure_through_82801, |
| 2370 | .name = "HP nc6000", |
| 2371 | }, |
| 2372 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2373 | /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */ |
| 2374 | .vendor = PCIID_VENDOR_INTEL, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2375 | .device = 0x24c0, |
| 2376 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2377 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2378 | .sir_io = 0x03f8, |
| 2379 | .fir_io = 0x0130, |
| 2380 | .fir_irq = 0x07, |
| 2381 | .fir_dma = 0x01, |
| 2382 | .cfg_base = 0x002e, |
| 2383 | .preconfigure = preconfigure_through_82801, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2384 | .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2385 | }, |
| 2386 | { |
| 2387 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2388 | .device = 0x248c, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2389 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2390 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2391 | .sir_io = 0x03f8, |
| 2392 | .fir_io = 0x0130, |
| 2393 | .fir_irq = 0x03, |
| 2394 | .fir_dma = 0x03, |
| 2395 | .cfg_base = 0x002e, |
| 2396 | .preconfigure = preconfigure_through_82801, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2397 | .name = "Toshiba laptop with Intel 82801CAM ISA bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2398 | }, |
| 2399 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2400 | /* 82801DBM (ICH4-M) LPC Interface Bridge */ |
| 2401 | .vendor = PCIID_VENDOR_INTEL, |
| 2402 | .device = 0x24cc, |
| 2403 | .subvendor = 0x1179, |
| 2404 | .subdevice = 0xffff, /* 0xffff is "any" */ |
| 2405 | .sir_io = 0x03f8, |
| 2406 | .fir_io = 0x0130, |
| 2407 | .fir_irq = 0x03, |
| 2408 | .fir_dma = 0x03, |
| 2409 | .cfg_base = 0x002e, |
| 2410 | .preconfigure = preconfigure_through_82801, |
| 2411 | .name = "Toshiba laptop with Intel 8281DBM LPC bridge", |
| 2412 | }, |
| 2413 | { |
| 2414 | /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */ |
| 2415 | .vendor = PCIID_VENDOR_ALI, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2416 | .device = 0x1533, |
| 2417 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2418 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2419 | .sir_io = 0x02e8, |
| 2420 | .fir_io = 0x02f8, |
| 2421 | .fir_irq = 0x07, |
| 2422 | .fir_dma = 0x03, |
| 2423 | .cfg_base = 0x002e, |
| 2424 | .preconfigure = preconfigure_through_ali, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2425 | .name = "Toshiba laptop with ALi ISA bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2426 | }, |
| 2427 | { } // Terminator |
| 2428 | }; |
| 2429 | |
| 2430 | |
| 2431 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2432 | * This sets up the basic SMSC parameters |
| 2433 | * (FIR port, SIR port, FIR DMA, FIR IRQ) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2434 | * through the chip configuration port. |
| 2435 | */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2436 | static int __init preconfigure_smsc_chip(struct |
| 2437 | smsc_ircc_subsystem_configuration |
| 2438 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2439 | { |
| 2440 | unsigned short iobase = conf->cfg_base; |
| 2441 | unsigned char tmpbyte; |
| 2442 | |
| 2443 | outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state |
| 2444 | outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID |
| 2445 | tmpbyte = inb(iobase +1); // Read device ID |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2446 | IRDA_DEBUG(0, |
| 2447 | "Detected Chip id: 0x%02x, setting up registers...\n", |
| 2448 | tmpbyte); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2449 | |
| 2450 | /* Disable UART1 and set up SIR I/O port */ |
| 2451 | outb(0x24, iobase); // select CR24 - UART1 base addr |
| 2452 | outb(0x00, iobase + 1); // disable UART1 |
| 2453 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase); // select CR25 - UART2 base addr |
| 2454 | outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8 |
| 2455 | tmpbyte = inb(iobase + 1); |
| 2456 | if (tmpbyte != (conf->sir_io >> 2) ) { |
| 2457 | IRDA_WARNING("ERROR: could not configure SIR ioport.\n"); |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2458 | IRDA_WARNING("Try to supply ircc_cfg argument.\n"); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2459 | return -ENXIO; |
| 2460 | } |
| 2461 | |
| 2462 | /* Set up FIR IRQ channel for UART2 */ |
| 2463 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select |
| 2464 | tmpbyte = inb(iobase + 1); |
| 2465 | tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion |
| 2466 | tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK); |
| 2467 | outb(tmpbyte, iobase + 1); |
| 2468 | tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
| 2469 | if (tmpbyte != conf->fir_irq) { |
| 2470 | IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n"); |
| 2471 | return -ENXIO; |
| 2472 | } |
| 2473 | |
| 2474 | /* Set up FIR I/O port */ |
| 2475 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase); // CR2B - SCE (FIR) base addr |
| 2476 | outb((conf->fir_io >> 3), iobase + 1); |
| 2477 | tmpbyte = inb(iobase + 1); |
| 2478 | if (tmpbyte != (conf->fir_io >> 3) ) { |
| 2479 | IRDA_WARNING("ERROR: could not configure FIR I/O port.\n"); |
| 2480 | return -ENXIO; |
| 2481 | } |
| 2482 | |
| 2483 | /* Set up FIR DMA channel */ |
| 2484 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase); // CR2C - SCE (FIR) DMA select |
| 2485 | outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA |
| 2486 | tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK; |
| 2487 | if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) { |
| 2488 | IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n"); |
| 2489 | return -ENXIO; |
| 2490 | } |
| 2491 | |
| 2492 | outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase); // CR0C - UART mode |
| 2493 | tmpbyte = inb(iobase + 1); |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2494 | tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK | |
| 2495 | SMSCSIOFLAT_UART2MODE_VAL_IRDA; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2496 | outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed |
| 2497 | |
| 2498 | outb(LPC47N227_APMBOOTDRIVE_REG, iobase); // CR07 - Auto Pwr Mgt/boot drive sel |
| 2499 | tmpbyte = inb(iobase + 1); |
| 2500 | outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down |
| 2501 | |
| 2502 | /* This one was not part of tosh1800 */ |
| 2503 | outb(0x0a, iobase); // CR0a - ecp fifo / ir mux |
| 2504 | tmpbyte = inb(iobase + 1); |
| 2505 | outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port |
| 2506 | |
| 2507 | outb(LPC47N227_UART12POWER_REG, iobase); // CR02 - UART 1,2 power |
| 2508 | tmpbyte = inb(iobase + 1); |
| 2509 | outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down |
| 2510 | |
| 2511 | outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase); // CR00 - FDC Power/valid config cycle |
| 2512 | tmpbyte = inb(iobase + 1); |
| 2513 | outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done |
| 2514 | |
| 2515 | outb(LPC47N227_CFGEXITKEY, iobase); // Exit configuration |
| 2516 | |
| 2517 | return 0; |
| 2518 | } |
| 2519 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2520 | /* 82801CAM generic registers */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2521 | #define VID 0x00 |
| 2522 | #define DID 0x02 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2523 | #define PIRQ_A_D_ROUT 0x60 |
| 2524 | #define SIRQ_CNTL 0x64 |
| 2525 | #define PIRQ_E_H_ROUT 0x68 |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2526 | #define PCI_DMA_C 0x90 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2527 | /* LPC-specific registers */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2528 | #define COM_DEC 0xe0 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2529 | #define GEN1_DEC 0xe4 |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2530 | #define LPC_EN 0xe6 |
| 2531 | #define GEN2_DEC 0xec |
| 2532 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2533 | * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge |
| 2534 | * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge. |
| 2535 | * They all work the same way! |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2536 | */ |
| 2537 | static int __init preconfigure_through_82801(struct pci_dev *dev, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2538 | struct |
| 2539 | smsc_ircc_subsystem_configuration |
| 2540 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2541 | { |
| 2542 | unsigned short tmpword; |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2543 | unsigned char tmpbyte; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2544 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2545 | IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n"); |
| 2546 | /* |
| 2547 | * Select the range for the COMA COM port (SIR) |
| 2548 | * Register COM_DEC: |
| 2549 | * Bit 7: reserved |
| 2550 | * Bit 6-4, COMB decode range |
| 2551 | * Bit 3: reserved |
| 2552 | * Bit 2-0, COMA decode range |
| 2553 | * |
| 2554 | * Decode ranges: |
| 2555 | * 000 = 0x3f8-0x3ff (COM1) |
| 2556 | * 001 = 0x2f8-0x2ff (COM2) |
| 2557 | * 010 = 0x220-0x227 |
| 2558 | * 011 = 0x228-0x22f |
| 2559 | * 100 = 0x238-0x23f |
| 2560 | * 101 = 0x2e8-0x2ef (COM4) |
| 2561 | * 110 = 0x338-0x33f |
| 2562 | * 111 = 0x3e8-0x3ef (COM3) |
| 2563 | */ |
| 2564 | pci_read_config_byte(dev, COM_DEC, &tmpbyte); |
| 2565 | tmpbyte &= 0xf8; /* mask COMA bits */ |
| 2566 | switch(conf->sir_io) { |
| 2567 | case 0x3f8: |
| 2568 | tmpbyte |= 0x00; |
| 2569 | break; |
| 2570 | case 0x2f8: |
| 2571 | tmpbyte |= 0x01; |
| 2572 | break; |
| 2573 | case 0x220: |
| 2574 | tmpbyte |= 0x02; |
| 2575 | break; |
| 2576 | case 0x228: |
| 2577 | tmpbyte |= 0x03; |
| 2578 | break; |
| 2579 | case 0x238: |
| 2580 | tmpbyte |= 0x04; |
| 2581 | break; |
| 2582 | case 0x2e8: |
| 2583 | tmpbyte |= 0x05; |
| 2584 | break; |
| 2585 | case 0x338: |
| 2586 | tmpbyte |= 0x06; |
| 2587 | break; |
| 2588 | case 0x3e8: |
| 2589 | tmpbyte |= 0x07; |
| 2590 | break; |
| 2591 | default: |
| 2592 | tmpbyte |= 0x01; /* COM2 default */ |
| 2593 | } |
| 2594 | IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte); |
| 2595 | pci_write_config_byte(dev, COM_DEC, tmpbyte); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2596 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2597 | /* Enable Low Pin Count interface */ |
| 2598 | pci_read_config_word(dev, LPC_EN, &tmpword); |
| 2599 | /* These seem to be set up at all times, |
| 2600 | * just make sure it is properly set. |
| 2601 | */ |
| 2602 | switch(conf->cfg_base) { |
| 2603 | case 0x04e: |
| 2604 | tmpword |= 0x2000; |
| 2605 | break; |
| 2606 | case 0x02e: |
| 2607 | tmpword |= 0x1000; |
| 2608 | break; |
| 2609 | case 0x062: |
| 2610 | tmpword |= 0x0800; |
| 2611 | break; |
| 2612 | case 0x060: |
| 2613 | tmpword |= 0x0400; |
| 2614 | break; |
| 2615 | default: |
| 2616 | IRDA_WARNING("Uncommon I/O base address: 0x%04x\n", |
| 2617 | conf->cfg_base); |
| 2618 | break; |
| 2619 | } |
| 2620 | tmpword &= 0xfffd; /* disable LPC COMB */ |
| 2621 | tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */ |
| 2622 | IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2623 | pci_write_config_word(dev, LPC_EN, tmpword); |
| 2624 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2625 | /* |
| 2626 | * Configure LPC DMA channel |
| 2627 | * PCI_DMA_C bits: |
| 2628 | * Bit 15-14: DMA channel 7 select |
| 2629 | * Bit 13-12: DMA channel 6 select |
| 2630 | * Bit 11-10: DMA channel 5 select |
| 2631 | * Bit 9-8: Reserved |
| 2632 | * Bit 7-6: DMA channel 3 select |
| 2633 | * Bit 5-4: DMA channel 2 select |
| 2634 | * Bit 3-2: DMA channel 1 select |
| 2635 | * Bit 1-0: DMA channel 0 select |
| 2636 | * 00 = Reserved value |
| 2637 | * 01 = PC/PCI DMA |
| 2638 | * 10 = Reserved value |
| 2639 | * 11 = LPC I/F DMA |
| 2640 | */ |
| 2641 | pci_read_config_word(dev, PCI_DMA_C, &tmpword); |
| 2642 | switch(conf->fir_dma) { |
| 2643 | case 0x07: |
| 2644 | tmpword |= 0xc000; |
| 2645 | break; |
| 2646 | case 0x06: |
| 2647 | tmpword |= 0x3000; |
| 2648 | break; |
| 2649 | case 0x05: |
| 2650 | tmpword |= 0x0c00; |
| 2651 | break; |
| 2652 | case 0x03: |
| 2653 | tmpword |= 0x00c0; |
| 2654 | break; |
| 2655 | case 0x02: |
| 2656 | tmpword |= 0x0030; |
| 2657 | break; |
| 2658 | case 0x01: |
| 2659 | tmpword |= 0x000c; |
| 2660 | break; |
| 2661 | case 0x00: |
| 2662 | tmpword |= 0x0003; |
| 2663 | break; |
| 2664 | default: |
| 2665 | break; /* do not change settings */ |
| 2666 | } |
| 2667 | IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword); |
| 2668 | pci_write_config_word(dev, PCI_DMA_C, tmpword); |
| 2669 | |
| 2670 | /* |
| 2671 | * GEN2_DEC bits: |
| 2672 | * Bit 15-4: Generic I/O range |
| 2673 | * Bit 3-1: reserved (read as 0) |
| 2674 | * Bit 0: enable GEN2 range on LPC I/F |
| 2675 | */ |
| 2676 | tmpword = conf->fir_io & 0xfff8; |
| 2677 | tmpword |= 0x0001; |
| 2678 | IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword); |
| 2679 | pci_write_config_word(dev, GEN2_DEC, tmpword); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2680 | |
| 2681 | /* Pre-configure chip */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2682 | return preconfigure_smsc_chip(conf); |
| 2683 | } |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2684 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2685 | /* |
| 2686 | * Pre-configure a certain port on the ALi 1533 bridge. |
| 2687 | * This is based on reverse-engineering since ALi does not |
| 2688 | * provide any data sheet for the 1533 chip. |
| 2689 | */ |
| 2690 | static void __init preconfigure_ali_port(struct pci_dev *dev, |
| 2691 | unsigned short port) |
| 2692 | { |
| 2693 | unsigned char reg; |
| 2694 | /* These bits obviously control the different ports */ |
| 2695 | unsigned char mask; |
| 2696 | unsigned char tmpbyte; |
| 2697 | |
| 2698 | switch(port) { |
| 2699 | case 0x0130: |
| 2700 | case 0x0178: |
| 2701 | reg = 0xb0; |
| 2702 | mask = 0x80; |
| 2703 | break; |
| 2704 | case 0x03f8: |
| 2705 | reg = 0xb4; |
| 2706 | mask = 0x80; |
| 2707 | break; |
| 2708 | case 0x02f8: |
| 2709 | reg = 0xb4; |
| 2710 | mask = 0x30; |
| 2711 | break; |
| 2712 | case 0x02e8: |
| 2713 | reg = 0xb4; |
| 2714 | mask = 0x08; |
| 2715 | break; |
| 2716 | default: |
| 2717 | IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port); |
| 2718 | return; |
| 2719 | } |
| 2720 | |
| 2721 | pci_read_config_byte(dev, reg, &tmpbyte); |
| 2722 | /* Turn on the right bits */ |
| 2723 | tmpbyte |= mask; |
| 2724 | pci_write_config_byte(dev, reg, tmpbyte); |
| 2725 | IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port); |
| 2726 | return; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2727 | } |
| 2728 | |
| 2729 | static int __init preconfigure_through_ali(struct pci_dev *dev, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2730 | struct |
| 2731 | smsc_ircc_subsystem_configuration |
| 2732 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2733 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2734 | /* Configure the two ports on the ALi 1533 */ |
| 2735 | preconfigure_ali_port(dev, conf->sir_io); |
| 2736 | preconfigure_ali_port(dev, conf->fir_io); |
| 2737 | |
| 2738 | /* Pre-configure chip */ |
| 2739 | return preconfigure_smsc_chip(conf); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2740 | } |
| 2741 | |
| 2742 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 2743 | unsigned short ircc_fir, |
| 2744 | unsigned short ircc_sir, |
| 2745 | unsigned char ircc_dma, |
| 2746 | unsigned char ircc_irq) |
| 2747 | { |
| 2748 | struct pci_dev *dev = NULL; |
| 2749 | unsigned short ss_vendor = 0x0000; |
| 2750 | unsigned short ss_device = 0x0000; |
| 2751 | int ret = 0; |
| 2752 | |
| 2753 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2754 | |
| 2755 | while (dev != NULL) { |
| 2756 | struct smsc_ircc_subsystem_configuration *conf; |
| 2757 | |
| 2758 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2759 | * Cache the subsystem vendor/device: |
| 2760 | * some manufacturers fail to set this for all components, |
| 2761 | * so we save it in case there is just 0x0000 0x0000 on the |
| 2762 | * device we want to check. |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2763 | */ |
| 2764 | if (dev->subsystem_vendor != 0x0000U) { |
| 2765 | ss_vendor = dev->subsystem_vendor; |
| 2766 | ss_device = dev->subsystem_device; |
| 2767 | } |
| 2768 | conf = subsystem_configurations; |
| 2769 | for( ; conf->subvendor; conf++) { |
| 2770 | if(conf->vendor == dev->vendor && |
| 2771 | conf->device == dev->device && |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2772 | conf->subvendor == ss_vendor && |
| 2773 | /* Sometimes these are cached values */ |
| 2774 | (conf->subdevice == ss_device || |
| 2775 | conf->subdevice == 0xffff)) { |
| 2776 | struct smsc_ircc_subsystem_configuration |
| 2777 | tmpconf; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2778 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2779 | memcpy(&tmpconf, conf, |
| 2780 | sizeof(struct smsc_ircc_subsystem_configuration)); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2781 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame^] | 2782 | /* |
| 2783 | * Override the default values with anything |
| 2784 | * passed in as parameter |
| 2785 | */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2786 | if (ircc_cfg != 0) |
| 2787 | tmpconf.cfg_base = ircc_cfg; |
| 2788 | if (ircc_fir != 0) |
| 2789 | tmpconf.fir_io = ircc_fir; |
| 2790 | if (ircc_sir != 0) |
| 2791 | tmpconf.sir_io = ircc_sir; |
| 2792 | if (ircc_dma != 0xff) |
| 2793 | tmpconf.fir_dma = ircc_dma; |
| 2794 | if (ircc_irq != 0xff) |
| 2795 | tmpconf.fir_irq = ircc_irq; |
| 2796 | |
| 2797 | IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name); |
| 2798 | if (conf->preconfigure) |
| 2799 | ret = conf->preconfigure(dev, &tmpconf); |
| 2800 | else |
| 2801 | ret = -ENODEV; |
| 2802 | } |
| 2803 | } |
| 2804 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2805 | } |
| 2806 | |
| 2807 | return ret; |
| 2808 | } |
| 2809 | #endif // CONFIG_PCI |
| 2810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2811 | /************************************************ |
| 2812 | * |
| 2813 | * Transceivers specific functions |
| 2814 | * |
| 2815 | ************************************************/ |
| 2816 | |
| 2817 | |
| 2818 | /* |
| 2819 | * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed) |
| 2820 | * |
| 2821 | * Program transceiver through smsc-ircc ATC circuitry |
| 2822 | * |
| 2823 | */ |
| 2824 | |
| 2825 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed) |
| 2826 | { |
| 2827 | unsigned long jiffies_now, jiffies_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2828 | u8 val; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2829 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2830 | jiffies_now = jiffies; |
| 2831 | jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2832 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | /* ATC */ |
| 2834 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2835 | outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE, |
| 2836 | fir_base + IRCC_ATC); |
| 2837 | |
| 2838 | while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) && |
| 2839 | !time_after(jiffies, jiffies_timeout)) |
| 2840 | /* empty */; |
| 2841 | |
| 2842 | if (val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2843 | IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2844 | inb(fir_base + IRCC_ATC)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2845 | } |
| 2846 | |
| 2847 | /* |
| 2848 | * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base) |
| 2849 | * |
| 2850 | * Probe transceiver smsc-ircc ATC circuitry |
| 2851 | * |
| 2852 | */ |
| 2853 | |
| 2854 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base) |
| 2855 | { |
| 2856 | return 0; |
| 2857 | } |
| 2858 | |
| 2859 | /* |
| 2860 | * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed) |
| 2861 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2862 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2863 | * |
| 2864 | */ |
| 2865 | |
| 2866 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed) |
| 2867 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2868 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2869 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2870 | switch (speed) { |
| 2871 | default: |
| 2872 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2873 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2875 | case 1152000 : |
| 2876 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | fast_mode = IRCC_LCR_A_FAST; |
| 2878 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2879 | } |
| 2880 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2881 | 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] | 2882 | } |
| 2883 | |
| 2884 | /* |
| 2885 | * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base) |
| 2886 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2887 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2888 | * |
| 2889 | */ |
| 2890 | |
| 2891 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base) |
| 2892 | { |
| 2893 | return 0; |
| 2894 | } |
| 2895 | |
| 2896 | /* |
| 2897 | * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed) |
| 2898 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2899 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2900 | * |
| 2901 | */ |
| 2902 | |
| 2903 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed) |
| 2904 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2905 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2906 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2907 | switch (speed) { |
| 2908 | default: |
| 2909 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2910 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2911 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2912 | case 1152000 : |
| 2913 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2914 | fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA; |
| 2915 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2916 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | } |
| 2918 | /* This causes an interrupt */ |
| 2919 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2920 | 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] | 2921 | } |
| 2922 | |
| 2923 | /* |
| 2924 | * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base) |
| 2925 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2926 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2927 | * |
| 2928 | */ |
| 2929 | |
| 2930 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base) |
| 2931 | { |
| 2932 | return 0; |
| 2933 | } |
| 2934 | |
| 2935 | |
| 2936 | module_init(smsc_ircc_init); |
| 2937 | module_exit(smsc_ircc_cleanup); |