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> |
David Brownell | d94c77b | 2006-05-09 15:26:11 -0700 | [diff] [blame] | 57 | #include <linux/pnp.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 58 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
| 60 | #include <asm/io.h> |
| 61 | #include <asm/dma.h> |
| 62 | #include <asm/byteorder.h> |
| 63 | |
| 64 | #include <linux/spinlock.h> |
| 65 | #include <linux/pm.h> |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 66 | #ifdef CONFIG_PCI |
| 67 | #include <linux/pci.h> |
| 68 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | #include <net/irda/wrapper.h> |
| 71 | #include <net/irda/irda.h> |
| 72 | #include <net/irda/irda_device.h> |
| 73 | |
| 74 | #include "smsc-ircc2.h" |
| 75 | #include "smsc-sio.h" |
| 76 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 77 | |
| 78 | MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>"); |
| 79 | MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver"); |
| 80 | MODULE_LICENSE("GPL"); |
| 81 | |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 82 | static int smsc_nopnp; |
| 83 | module_param_named(nopnp, smsc_nopnp, bool, 0); |
| 84 | MODULE_PARM_DESC(nopnp, "Do not use PNP to detect controller settings"); |
| 85 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 86 | #define DMA_INVAL 255 |
| 87 | static int ircc_dma = DMA_INVAL; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 88 | module_param(ircc_dma, int, 0); |
| 89 | MODULE_PARM_DESC(ircc_dma, "DMA channel"); |
| 90 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 91 | #define IRQ_INVAL 255 |
| 92 | static int ircc_irq = IRQ_INVAL; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 93 | module_param(ircc_irq, int, 0); |
| 94 | MODULE_PARM_DESC(ircc_irq, "IRQ line"); |
| 95 | |
| 96 | static int ircc_fir; |
| 97 | module_param(ircc_fir, int, 0); |
| 98 | MODULE_PARM_DESC(ircc_fir, "FIR Base Address"); |
| 99 | |
| 100 | static int ircc_sir; |
| 101 | module_param(ircc_sir, int, 0); |
| 102 | MODULE_PARM_DESC(ircc_sir, "SIR Base Address"); |
| 103 | |
| 104 | static int ircc_cfg; |
| 105 | module_param(ircc_cfg, int, 0); |
| 106 | MODULE_PARM_DESC(ircc_cfg, "Configuration register base address"); |
| 107 | |
| 108 | static int ircc_transceiver; |
| 109 | module_param(ircc_transceiver, int, 0); |
| 110 | MODULE_PARM_DESC(ircc_transceiver, "Transceiver type"); |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | /* Types */ |
| 113 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 114 | #ifdef CONFIG_PCI |
| 115 | struct smsc_ircc_subsystem_configuration { |
| 116 | unsigned short vendor; /* PCI vendor ID */ |
| 117 | unsigned short device; /* PCI vendor ID */ |
| 118 | unsigned short subvendor; /* PCI subsystem vendor ID */ |
| 119 | unsigned short subdevice; /* PCI sybsystem device ID */ |
| 120 | unsigned short sir_io; /* I/O port for SIR */ |
| 121 | unsigned short fir_io; /* I/O port for FIR */ |
| 122 | unsigned char fir_irq; /* FIR IRQ */ |
| 123 | unsigned char fir_dma; /* FIR DMA */ |
| 124 | unsigned short cfg_base; /* I/O port for chip configuration */ |
| 125 | int (*preconfigure)(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); /* Preconfig function */ |
| 126 | const char *name; /* name shown as info */ |
| 127 | }; |
| 128 | #endif |
| 129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | struct smsc_transceiver { |
| 131 | char *name; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 132 | void (*set_for_speed)(int fir_base, u32 speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | int (*probe)(int fir_base); |
| 134 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
| 136 | struct smsc_chip { |
| 137 | char *name; |
| 138 | #if 0 |
| 139 | u8 type; |
| 140 | #endif |
| 141 | u16 flags; |
| 142 | u8 devid; |
| 143 | u8 rev; |
| 144 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | |
| 146 | struct smsc_chip_address { |
| 147 | unsigned int cfg_base; |
| 148 | unsigned int type; |
| 149 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
| 151 | /* Private data for each instance */ |
| 152 | struct smsc_ircc_cb { |
| 153 | struct net_device *netdev; /* Yes! we are some kind of netdevice */ |
| 154 | struct net_device_stats stats; |
| 155 | struct irlap_cb *irlap; /* The link layer we are binded to */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | chipio_t io; /* IrDA controller information */ |
| 158 | iobuff_t tx_buff; /* Transmit buffer */ |
| 159 | iobuff_t rx_buff; /* Receive buffer */ |
| 160 | dma_addr_t tx_buff_dma; |
| 161 | dma_addr_t rx_buff_dma; |
| 162 | |
| 163 | struct qos_info qos; /* QoS capabilities for this device */ |
| 164 | |
| 165 | spinlock_t lock; /* For serializing operations */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | __u32 new_speed; |
| 168 | __u32 flags; /* Interface flags */ |
| 169 | |
| 170 | int tx_buff_offsets[10]; /* Offsets between frames in tx_buff */ |
| 171 | int tx_len; /* Number of frames in tx_buff */ |
| 172 | |
| 173 | int transceiver; |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 174 | struct platform_device *pldev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | }; |
| 176 | |
| 177 | /* Constants */ |
| 178 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 179 | #define SMSC_IRCC2_DRIVER_NAME "smsc-ircc2" |
| 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED 9600 |
| 182 | #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER 1 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 183 | #define SMSC_IRCC2_C_NET_TIMEOUT 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | #define SMSC_IRCC2_C_SIR_STOP 0 |
| 185 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 186 | static const char *driver_name = SMSC_IRCC2_DRIVER_NAME; |
| 187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | /* Prototypes */ |
| 189 | |
| 190 | static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq); |
| 191 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base); |
| 192 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq); |
| 193 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self); |
| 194 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self); |
| 195 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 196 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self); |
| 197 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self); |
| 199 | static int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev); |
| 200 | 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] | 201 | static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs); |
| 202 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 203 | static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed); |
| 204 | static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, u32 speed); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 205 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev); |
| 207 | static void smsc_ircc_sir_start(struct smsc_ircc_cb *self); |
| 208 | #if SMSC_IRCC2_C_SIR_STOP |
| 209 | static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self); |
| 210 | #endif |
| 211 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self); |
| 212 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); |
| 213 | static int smsc_ircc_net_open(struct net_device *dev); |
| 214 | static int smsc_ircc_net_close(struct net_device *dev); |
| 215 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 216 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 217 | static void smsc_ircc_timeout(struct net_device *dev); |
| 218 | #endif |
| 219 | 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] | 220 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self); |
| 221 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self); |
| 222 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed); |
| 223 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self); |
| 224 | |
| 225 | /* Probing */ |
| 226 | static int __init smsc_ircc_look_for_chips(void); |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 227 | static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type); |
| 228 | static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type); |
| 229 | 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] | 230 | static int __init smsc_superio_fdc(unsigned short cfg_base); |
| 231 | static int __init smsc_superio_lpc(unsigned short cfg_base); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 232 | #ifdef CONFIG_PCI |
| 233 | static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf); |
| 234 | 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] | 235 | static void __init preconfigure_ali_port(struct pci_dev *dev, |
| 236 | unsigned short port); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 237 | static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); |
| 238 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 239 | unsigned short ircc_fir, |
| 240 | unsigned short ircc_sir, |
| 241 | unsigned char ircc_dma, |
| 242 | unsigned char ircc_irq); |
| 243 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
| 245 | /* Transceivers specific functions */ |
| 246 | |
| 247 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed); |
| 248 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base); |
| 249 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed); |
| 250 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base); |
| 251 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed); |
| 252 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base); |
| 253 | |
| 254 | /* Power Management */ |
| 255 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 256 | static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state); |
| 257 | static int smsc_ircc_resume(struct platform_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 259 | static struct platform_driver smsc_ircc_driver = { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 260 | .suspend = smsc_ircc_suspend, |
| 261 | .resume = smsc_ircc_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 262 | .driver = { |
| 263 | .name = SMSC_IRCC2_DRIVER_NAME, |
| 264 | }, |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 265 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
| 267 | /* Transceivers for SMSC-ircc */ |
| 268 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 269 | static struct smsc_transceiver smsc_transceivers[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 271 | { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 }, |
| 272 | { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select }, |
| 273 | { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc }, |
| 274 | { NULL, NULL } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | }; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 276 | #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | |
| 278 | /* SMC SuperIO chipsets definitions */ |
| 279 | |
| 280 | #define KEY55_1 0 /* SuperIO Configuration mode with Key <0x55> */ |
| 281 | #define KEY55_2 1 /* SuperIO Configuration mode with Key <0x55,0x55> */ |
| 282 | #define NoIRDA 2 /* SuperIO Chip has no IRDA Port */ |
| 283 | #define SIR 0 /* SuperIO Chip has only slow IRDA */ |
| 284 | #define FIR 4 /* SuperIO Chip has fast IRDA */ |
| 285 | #define SERx4 8 /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */ |
| 286 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 287 | static struct smsc_chip __initdata fdc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | { |
| 289 | /* Base address 0x3f0 or 0x370 */ |
| 290 | { "37C44", KEY55_1|NoIRDA, 0x00, 0x00 }, /* This chip cannot be detected */ |
| 291 | { "37C665GT", KEY55_2|NoIRDA, 0x65, 0x01 }, |
| 292 | { "37C665GT", KEY55_2|NoIRDA, 0x66, 0x01 }, |
| 293 | { "37C669", KEY55_2|SIR|SERx4, 0x03, 0x02 }, |
| 294 | { "37C669", KEY55_2|SIR|SERx4, 0x04, 0x02 }, /* ID? */ |
| 295 | { "37C78", KEY55_2|NoIRDA, 0x78, 0x00 }, |
| 296 | { "37N769", KEY55_1|FIR|SERx4, 0x28, 0x00 }, |
| 297 | { "37N869", KEY55_1|FIR|SERx4, 0x29, 0x00 }, |
| 298 | { NULL } |
| 299 | }; |
| 300 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 301 | static struct smsc_chip __initdata fdc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | { |
| 303 | /* Base address 0x3f0 or 0x370 */ |
| 304 | { "37B72X", KEY55_1|SIR|SERx4, 0x4c, 0x00 }, |
| 305 | { "37B77X", KEY55_1|SIR|SERx4, 0x43, 0x00 }, |
| 306 | { "37B78X", KEY55_1|SIR|SERx4, 0x44, 0x00 }, |
| 307 | { "37B80X", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 308 | { "37C67X", KEY55_1|FIR|SERx4, 0x40, 0x00 }, |
| 309 | { "37C93X", KEY55_2|SIR|SERx4, 0x02, 0x01 }, |
| 310 | { "37C93XAPM", KEY55_1|SIR|SERx4, 0x30, 0x01 }, |
| 311 | { "37C93XFR", KEY55_2|FIR|SERx4, 0x03, 0x01 }, |
| 312 | { "37M707", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 313 | { "37M81X", KEY55_1|SIR|SERx4, 0x4d, 0x00 }, |
| 314 | { "37N958FR", KEY55_1|FIR|SERx4, 0x09, 0x04 }, |
| 315 | { "37N971", KEY55_1|FIR|SERx4, 0x0a, 0x00 }, |
| 316 | { "37N972", KEY55_1|FIR|SERx4, 0x0b, 0x00 }, |
| 317 | { NULL } |
| 318 | }; |
| 319 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 320 | static struct smsc_chip __initdata lpc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | { |
| 322 | /* Base address 0x2E or 0x4E */ |
| 323 | { "47N227", KEY55_1|FIR|SERx4, 0x5a, 0x00 }, |
Peter Kovar | afdf27c | 2007-03-16 20:39:25 -0700 | [diff] [blame] | 324 | { "47N227", KEY55_1|FIR|SERx4, 0x7a, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { "47N267", KEY55_1|FIR|SERx4, 0x5e, 0x00 }, |
| 326 | { NULL } |
| 327 | }; |
| 328 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 329 | static struct smsc_chip __initdata lpc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | { |
| 331 | /* Base address 0x2E or 0x4E */ |
| 332 | { "47B27X", KEY55_1|SIR|SERx4, 0x51, 0x00 }, |
| 333 | { "47B37X", KEY55_1|SIR|SERx4, 0x52, 0x00 }, |
| 334 | { "47M10X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 335 | { "47M120", KEY55_1|NoIRDA|SERx4, 0x5c, 0x00 }, |
| 336 | { "47M13X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 337 | { "47M14X", KEY55_1|SIR|SERx4, 0x5f, 0x00 }, |
| 338 | { "47N252", KEY55_1|FIR|SERx4, 0x0e, 0x00 }, |
| 339 | { "47S42X", KEY55_1|SIR|SERx4, 0x57, 0x00 }, |
| 340 | { NULL } |
| 341 | }; |
| 342 | |
| 343 | #define SMSCSIO_TYPE_FDC 1 |
| 344 | #define SMSCSIO_TYPE_LPC 2 |
| 345 | #define SMSCSIO_TYPE_FLAT 4 |
| 346 | #define SMSCSIO_TYPE_PAGED 8 |
| 347 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 348 | static struct smsc_chip_address __initdata possible_addresses[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 350 | { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 351 | { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 352 | { 0xe0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 353 | { 0x2e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 354 | { 0x4e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 355 | { 0, 0 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | }; |
| 357 | |
| 358 | /* Globals */ |
| 359 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 360 | static struct smsc_ircc_cb *dev_self[] = { NULL, NULL }; |
| 361 | static unsigned short dev_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | |
| 363 | static inline void register_bank(int iobase, int bank) |
| 364 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 365 | outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)), |
| 366 | iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | } |
| 368 | |
David Brownell | d94c77b | 2006-05-09 15:26:11 -0700 | [diff] [blame] | 369 | /* PNP hotplug support */ |
| 370 | static const struct pnp_device_id smsc_ircc_pnp_table[] = { |
| 371 | { .id = "SMCf010", .driver_data = 0 }, |
| 372 | /* and presumably others */ |
| 373 | { } |
| 374 | }; |
| 375 | MODULE_DEVICE_TABLE(pnp, smsc_ircc_pnp_table); |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 376 | |
| 377 | static int pnp_driver_registered; |
| 378 | |
| 379 | static int __init smsc_ircc_pnp_probe(struct pnp_dev *dev, |
| 380 | const struct pnp_device_id *dev_id) |
| 381 | { |
| 382 | unsigned int firbase, sirbase; |
| 383 | u8 dma, irq; |
| 384 | |
| 385 | if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && |
| 386 | pnp_dma_valid(dev, 0) && pnp_irq_valid(dev, 0))) |
| 387 | return -EINVAL; |
| 388 | |
| 389 | sirbase = pnp_port_start(dev, 0); |
| 390 | firbase = pnp_port_start(dev, 1); |
| 391 | dma = pnp_dma(dev, 0); |
| 392 | irq = pnp_irq(dev, 0); |
| 393 | |
| 394 | if (smsc_ircc_open(firbase, sirbase, dma, irq)) |
| 395 | return -ENODEV; |
| 396 | |
| 397 | return 0; |
| 398 | } |
| 399 | |
| 400 | static struct pnp_driver smsc_ircc_pnp_driver = { |
| 401 | .name = "smsc-ircc2", |
| 402 | .id_table = smsc_ircc_pnp_table, |
| 403 | .probe = smsc_ircc_pnp_probe, |
| 404 | }; |
David Brownell | d94c77b | 2006-05-09 15:26:11 -0700 | [diff] [blame] | 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | /******************************************************************************* |
| 408 | * |
| 409 | * |
| 410 | * SMSC-ircc stuff |
| 411 | * |
| 412 | * |
| 413 | *******************************************************************************/ |
| 414 | |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 415 | static int __init smsc_ircc_legacy_probe(void) |
| 416 | { |
| 417 | int ret = 0; |
| 418 | |
| 419 | if (ircc_fir > 0 && ircc_sir > 0) { |
| 420 | IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir); |
| 421 | IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir); |
| 422 | |
| 423 | if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq)) |
| 424 | ret = -ENODEV; |
| 425 | } else { |
| 426 | ret = -ENODEV; |
| 427 | |
| 428 | /* try user provided configuration register base address */ |
| 429 | if (ircc_cfg > 0) { |
| 430 | IRDA_MESSAGE(" Overriding configuration address " |
| 431 | "0x%04x\n", ircc_cfg); |
| 432 | if (!smsc_superio_fdc(ircc_cfg)) |
| 433 | ret = 0; |
| 434 | if (!smsc_superio_lpc(ircc_cfg)) |
| 435 | ret = 0; |
| 436 | } |
| 437 | |
| 438 | if (smsc_ircc_look_for_chips() > 0) |
| 439 | ret = 0; |
| 440 | } |
| 441 | return ret; |
| 442 | } |
| 443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | /* |
| 445 | * Function smsc_ircc_init () |
| 446 | * |
| 447 | * Initialize chip. Just try to find out how many chips we are dealing with |
| 448 | * and where they are |
| 449 | */ |
| 450 | static int __init smsc_ircc_init(void) |
| 451 | { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 452 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | |
| 454 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 455 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 456 | ret = platform_driver_register(&smsc_ircc_driver); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 457 | if (ret) { |
| 458 | IRDA_ERROR("%s, Can't register driver!\n", driver_name); |
| 459 | return ret; |
| 460 | } |
| 461 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 462 | #ifdef CONFIG_PCI |
| 463 | if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) { |
| 464 | /* Ignore errors from preconfiguration */ |
| 465 | IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name); |
| 466 | } |
| 467 | #endif |
| 468 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 469 | dev_count = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 470 | |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 471 | if (smsc_nopnp || !pnp_platform_devices || |
| 472 | ircc_cfg || ircc_fir || ircc_sir || |
| 473 | ircc_dma != DMA_INVAL || ircc_irq != IRQ_INVAL) { |
| 474 | ret = smsc_ircc_legacy_probe(); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 475 | } else { |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 476 | if (pnp_register_driver(&smsc_ircc_pnp_driver) == 0) |
| 477 | pnp_driver_registered = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 479 | |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 480 | if (ret) { |
| 481 | if (pnp_driver_registered) |
| 482 | pnp_unregister_driver(&smsc_ircc_pnp_driver); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 483 | platform_driver_unregister(&smsc_ircc_driver); |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 484 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 485 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | return ret; |
| 487 | } |
| 488 | |
| 489 | /* |
| 490 | * Function smsc_ircc_open (firbase, sirbase, dma, irq) |
| 491 | * |
| 492 | * Try to open driver instance |
| 493 | * |
| 494 | */ |
| 495 | static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq) |
| 496 | { |
| 497 | struct smsc_ircc_cb *self; |
| 498 | struct net_device *dev; |
| 499 | int err; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 500 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 502 | |
| 503 | err = smsc_ircc_present(fir_base, sir_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 504 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | goto err_out; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | err = -ENOMEM; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 508 | if (dev_count >= ARRAY_SIZE(dev_self)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | IRDA_WARNING("%s(), too many devices!\n", __FUNCTION__); |
| 510 | goto err_out1; |
| 511 | } |
| 512 | |
| 513 | /* |
| 514 | * Allocate new instance of the driver |
| 515 | */ |
| 516 | dev = alloc_irdadev(sizeof(struct smsc_ircc_cb)); |
| 517 | if (!dev) { |
| 518 | IRDA_WARNING("%s() can't allocate net device\n", __FUNCTION__); |
| 519 | goto err_out1; |
| 520 | } |
| 521 | |
| 522 | SET_MODULE_OWNER(dev); |
| 523 | |
| 524 | dev->hard_start_xmit = smsc_ircc_hard_xmit_sir; |
| 525 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 526 | dev->tx_timeout = smsc_ircc_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 527 | dev->watchdog_timeo = HZ * 2; /* Allow enough time for speed change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | #endif |
| 529 | dev->open = smsc_ircc_net_open; |
| 530 | dev->stop = smsc_ircc_net_close; |
| 531 | dev->do_ioctl = smsc_ircc_net_ioctl; |
| 532 | dev->get_stats = smsc_ircc_net_get_stats; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 533 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 534 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | self->netdev = dev; |
| 536 | |
| 537 | /* Make ifconfig display some details */ |
| 538 | dev->base_addr = self->io.fir_base = fir_base; |
| 539 | dev->irq = self->io.irq = irq; |
| 540 | |
| 541 | /* Need to store self somewhere */ |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 542 | dev_self[dev_count] = self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | spin_lock_init(&self->lock); |
| 544 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 545 | self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE; |
| 547 | |
| 548 | self->rx_buff.head = |
| 549 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 550 | &self->rx_buff_dma, GFP_KERNEL); |
| 551 | if (self->rx_buff.head == NULL) { |
| 552 | IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n", |
| 553 | driver_name); |
| 554 | goto err_out2; |
| 555 | } |
| 556 | |
| 557 | self->tx_buff.head = |
| 558 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 559 | &self->tx_buff_dma, GFP_KERNEL); |
| 560 | if (self->tx_buff.head == NULL) { |
| 561 | IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n", |
| 562 | driver_name); |
| 563 | goto err_out3; |
| 564 | } |
| 565 | |
| 566 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 567 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 568 | |
| 569 | self->rx_buff.in_frame = FALSE; |
| 570 | self->rx_buff.state = OUTSIDE_FRAME; |
| 571 | self->tx_buff.data = self->tx_buff.head; |
| 572 | self->rx_buff.data = self->rx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | smsc_ircc_setup_qos(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | smsc_ircc_init_chip(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 577 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 578 | if (ircc_transceiver > 0 && |
| 579 | ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | self->transceiver = ircc_transceiver; |
| 581 | else |
| 582 | smsc_ircc_probe_transceiver(self); |
| 583 | |
| 584 | err = register_netdev(self->netdev); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 585 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | IRDA_ERROR("%s, Network device registration failed!\n", |
| 587 | driver_name); |
| 588 | goto err_out4; |
| 589 | } |
| 590 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 591 | self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME, |
| 592 | dev_count, NULL, 0); |
| 593 | if (IS_ERR(self->pldev)) { |
| 594 | err = PTR_ERR(self->pldev); |
| 595 | goto err_out5; |
| 596 | } |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 597 | platform_set_drvdata(self->pldev, self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
| 599 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 600 | dev_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
| 602 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 603 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 604 | err_out5: |
| 605 | unregister_netdev(self->netdev); |
| 606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | err_out4: |
| 608 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 609 | self->tx_buff.head, self->tx_buff_dma); |
| 610 | err_out3: |
| 611 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 612 | self->rx_buff.head, self->rx_buff_dma); |
| 613 | err_out2: |
| 614 | free_netdev(self->netdev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 615 | dev_self[dev_count] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | err_out1: |
| 617 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 618 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 619 | err_out: |
| 620 | return err; |
| 621 | } |
| 622 | |
| 623 | /* |
| 624 | * Function smsc_ircc_present(fir_base, sir_base) |
| 625 | * |
| 626 | * Check the smsc-ircc chip presence |
| 627 | * |
| 628 | */ |
| 629 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base) |
| 630 | { |
| 631 | unsigned char low, high, chip, config, dma, irq, version; |
| 632 | |
| 633 | if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT, |
| 634 | driver_name)) { |
| 635 | IRDA_WARNING("%s: can't get fir_base of 0x%03x\n", |
| 636 | __FUNCTION__, fir_base); |
| 637 | goto out1; |
| 638 | } |
| 639 | |
| 640 | if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT, |
| 641 | driver_name)) { |
| 642 | IRDA_WARNING("%s: can't get sir_base of 0x%03x\n", |
| 643 | __FUNCTION__, sir_base); |
| 644 | goto out2; |
| 645 | } |
| 646 | |
| 647 | register_bank(fir_base, 3); |
| 648 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 649 | high = inb(fir_base + IRCC_ID_HIGH); |
| 650 | low = inb(fir_base + IRCC_ID_LOW); |
| 651 | chip = inb(fir_base + IRCC_CHIP_ID); |
| 652 | version = inb(fir_base + IRCC_VERSION); |
| 653 | config = inb(fir_base + IRCC_INTERFACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | dma = config & IRCC_INTERFACE_DMA_MASK; |
| 655 | irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
| 656 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 657 | if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 658 | IRDA_WARNING("%s(), addr 0x%04x - no device found!\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | __FUNCTION__, fir_base); |
| 660 | goto out3; |
| 661 | } |
| 662 | IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, " |
| 663 | "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n", |
| 664 | chip & 0x0f, version, fir_base, sir_base, dma, irq); |
| 665 | |
| 666 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 667 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | out3: |
| 669 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 670 | out2: |
| 671 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 672 | out1: |
| 673 | return -ENODEV; |
| 674 | } |
| 675 | |
| 676 | /* |
| 677 | * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq) |
| 678 | * |
| 679 | * Setup I/O |
| 680 | * |
| 681 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 682 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, |
| 683 | unsigned int fir_base, unsigned int sir_base, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | u8 dma, u8 irq) |
| 685 | { |
| 686 | unsigned char config, chip_dma, chip_irq; |
| 687 | |
| 688 | register_bank(fir_base, 3); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 689 | config = inb(fir_base + IRCC_INTERFACE); |
| 690 | chip_dma = config & IRCC_INTERFACE_DMA_MASK; |
| 691 | chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
| 693 | self->io.fir_base = fir_base; |
| 694 | self->io.sir_base = sir_base; |
| 695 | self->io.fir_ext = SMSC_IRCC2_FIR_CHIP_IO_EXTENT; |
| 696 | self->io.sir_ext = SMSC_IRCC2_SIR_CHIP_IO_EXTENT; |
| 697 | self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE; |
| 698 | self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED; |
| 699 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 700 | if (irq != IRQ_INVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | if (irq != chip_irq) |
| 702 | IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n", |
| 703 | driver_name, chip_irq, irq); |
| 704 | self->io.irq = irq; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 705 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | self->io.irq = chip_irq; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 707 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 708 | if (dma != DMA_INVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | if (dma != chip_dma) |
| 710 | IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n", |
| 711 | driver_name, chip_dma, dma); |
| 712 | self->io.dma = dma; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 713 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | self->io.dma = chip_dma; |
| 715 | |
| 716 | } |
| 717 | |
| 718 | /* |
| 719 | * Function smsc_ircc_setup_qos(self) |
| 720 | * |
| 721 | * Setup qos |
| 722 | * |
| 723 | */ |
| 724 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self) |
| 725 | { |
| 726 | /* Initialize QoS for this device */ |
| 727 | irda_init_max_qos_capabilies(&self->qos); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 728 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 730 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); |
| 731 | |
| 732 | self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME; |
| 733 | self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE; |
| 734 | irda_qos_bits_to_value(&self->qos); |
| 735 | } |
| 736 | |
| 737 | /* |
| 738 | * Function smsc_ircc_init_chip(self) |
| 739 | * |
| 740 | * Init chip |
| 741 | * |
| 742 | */ |
| 743 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self) |
| 744 | { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 745 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | |
| 747 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 748 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 749 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | |
| 751 | register_bank(iobase, 1); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 752 | outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A), |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 753 | iobase + IRCC_SCE_CFGA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | |
| 755 | #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 756 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 757 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 758 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 759 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 760 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 761 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 762 | (void) inb(iobase + IRCC_FIFO_THRESHOLD); |
| 763 | outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | register_bank(iobase, 4); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 766 | outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 767 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | register_bank(iobase, 0); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 769 | outb(0, iobase + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | |
| 771 | smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 772 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | /* Power on device */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 774 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | /* |
| 778 | * Function smsc_ircc_net_ioctl (dev, rq, cmd) |
| 779 | * |
| 780 | * Process IOCTL commands for this device |
| 781 | * |
| 782 | */ |
| 783 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 784 | { |
| 785 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 786 | struct smsc_ircc_cb *self; |
| 787 | unsigned long flags; |
| 788 | int ret = 0; |
| 789 | |
| 790 | IRDA_ASSERT(dev != NULL, return -1;); |
| 791 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 792 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | |
| 794 | IRDA_ASSERT(self != NULL, return -1;); |
| 795 | |
| 796 | 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] | 797 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | switch (cmd) { |
| 799 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 800 | if (!capable(CAP_NET_ADMIN)) |
| 801 | ret = -EPERM; |
| 802 | else { |
| 803 | /* Make sure we are the only one touching |
| 804 | * self->io.speed and the hardware - Jean II */ |
| 805 | spin_lock_irqsave(&self->lock, flags); |
| 806 | smsc_ircc_change_speed(self, irq->ifr_baudrate); |
| 807 | spin_unlock_irqrestore(&self->lock, flags); |
| 808 | } |
| 809 | break; |
| 810 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 811 | if (!capable(CAP_NET_ADMIN)) { |
| 812 | ret = -EPERM; |
| 813 | break; |
| 814 | } |
| 815 | |
| 816 | irda_device_set_media_busy(self->netdev, TRUE); |
| 817 | break; |
| 818 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 819 | irq->ifr_receiving = smsc_ircc_is_receiving(self); |
| 820 | break; |
| 821 | #if 0 |
| 822 | case SIOCSDTRRTS: |
| 823 | if (!capable(CAP_NET_ADMIN)) { |
| 824 | ret = -EPERM; |
| 825 | break; |
| 826 | } |
| 827 | smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts); |
| 828 | break; |
| 829 | #endif |
| 830 | default: |
| 831 | ret = -EOPNOTSUPP; |
| 832 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | return ret; |
| 835 | } |
| 836 | |
| 837 | static struct net_device_stats *smsc_ircc_net_get_stats(struct net_device *dev) |
| 838 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 839 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 840 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | return &self->stats; |
| 842 | } |
| 843 | |
| 844 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 845 | /* |
| 846 | * Function smsc_ircc_timeout (struct net_device *dev) |
| 847 | * |
| 848 | * The networking timeout management. |
| 849 | * |
| 850 | */ |
| 851 | |
| 852 | static void smsc_ircc_timeout(struct net_device *dev) |
| 853 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 854 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | unsigned long flags; |
| 856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n", |
| 858 | dev->name, self->io.speed); |
| 859 | spin_lock_irqsave(&self->lock, flags); |
| 860 | smsc_ircc_sir_start(self); |
| 861 | smsc_ircc_change_speed(self, self->io.speed); |
| 862 | dev->trans_start = jiffies; |
| 863 | netif_wake_queue(dev); |
| 864 | spin_unlock_irqrestore(&self->lock, flags); |
| 865 | } |
| 866 | #endif |
| 867 | |
| 868 | /* |
| 869 | * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev) |
| 870 | * |
| 871 | * Transmits the current frame until FIFO is full, then |
| 872 | * waits until the next transmit interrupt, and continues until the |
| 873 | * frame is transmitted. |
| 874 | */ |
| 875 | int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev) |
| 876 | { |
| 877 | struct smsc_ircc_cb *self; |
| 878 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | s32 speed; |
| 880 | |
| 881 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 882 | |
| 883 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 884 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 885 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | IRDA_ASSERT(self != NULL, return 0;); |
| 887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 891 | spin_lock_irqsave(&self->lock, flags); |
| 892 | |
| 893 | /* Check if we need to change the speed */ |
| 894 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 895 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | /* Check for empty frame */ |
| 897 | if (!skb->len) { |
| 898 | /* |
| 899 | * We send frames one by one in SIR mode (no |
| 900 | * pipelining), so at this point, if we were sending |
| 901 | * a previous frame, we just received the interrupt |
| 902 | * telling us it is finished (UART_IIR_THRI). |
| 903 | * Therefore, waiting for the transmitter to really |
| 904 | * finish draining the fifo won't take too long. |
| 905 | * And the interrupt handler is not expected to run. |
| 906 | * - Jean II */ |
| 907 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 908 | smsc_ircc_change_speed(self, speed); |
| 909 | spin_unlock_irqrestore(&self->lock, flags); |
| 910 | dev_kfree_skb(skb); |
| 911 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 913 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | /* Init tx buffer */ |
| 917 | self->tx_buff.data = self->tx_buff.head; |
| 918 | |
| 919 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 920 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | self->tx_buff.truesize); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 922 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | self->stats.tx_bytes += self->tx_buff.len; |
| 924 | |
| 925 | /* Turn on transmit finished interrupt. Will fire immediately! */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 926 | outb(UART_IER_THRI, self->io.sir_base + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | |
| 928 | spin_unlock_irqrestore(&self->lock, flags); |
| 929 | |
| 930 | dev_kfree_skb(skb); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 931 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | return 0; |
| 933 | } |
| 934 | |
| 935 | /* |
| 936 | * Function smsc_ircc_set_fir_speed (self, baud) |
| 937 | * |
| 938 | * Change the speed of the device |
| 939 | * |
| 940 | */ |
| 941 | static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed) |
| 942 | { |
| 943 | int fir_base, ir_mode, ctrl, fast; |
| 944 | |
| 945 | IRDA_ASSERT(self != NULL, return;); |
| 946 | fir_base = self->io.fir_base; |
| 947 | |
| 948 | self->io.speed = speed; |
| 949 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 950 | switch (speed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | default: |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 952 | case 576000: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 954 | ctrl = IRCC_CRC; |
| 955 | fast = 0; |
| 956 | IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __FUNCTION__); |
| 957 | break; |
| 958 | case 1152000: |
| 959 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 960 | ctrl = IRCC_1152 | IRCC_CRC; |
| 961 | fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA; |
| 962 | IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", |
| 963 | __FUNCTION__); |
| 964 | break; |
| 965 | case 4000000: |
| 966 | ir_mode = IRCC_CFGA_IRDA_4PPM; |
| 967 | ctrl = IRCC_CRC; |
| 968 | fast = IRCC_LCR_A_FAST; |
| 969 | IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", |
| 970 | __FUNCTION__); |
| 971 | break; |
| 972 | } |
| 973 | #if 0 |
| 974 | Now in tranceiver! |
| 975 | /* This causes an interrupt */ |
| 976 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 977 | 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] | 978 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 979 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 981 | 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] | 982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 984 | outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
| 986 | |
| 987 | /* |
| 988 | * Function smsc_ircc_fir_start(self) |
| 989 | * |
| 990 | * Change the speed of the device |
| 991 | * |
| 992 | */ |
| 993 | static void smsc_ircc_fir_start(struct smsc_ircc_cb *self) |
| 994 | { |
| 995 | struct net_device *dev; |
| 996 | int fir_base; |
| 997 | |
| 998 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 999 | |
| 1000 | IRDA_ASSERT(self != NULL, return;); |
| 1001 | dev = self->netdev; |
| 1002 | IRDA_ASSERT(dev != NULL, return;); |
| 1003 | |
| 1004 | fir_base = self->io.fir_base; |
| 1005 | |
| 1006 | /* Reset everything */ |
| 1007 | |
| 1008 | /* Install FIR transmit handler */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1009 | dev->hard_start_xmit = smsc_ircc_hard_xmit_fir; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | |
| 1011 | /* Clear FIFO */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1012 | 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] | 1013 | |
| 1014 | /* Enable interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1015 | /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
| 1017 | register_bank(fir_base, 1); |
| 1018 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1019 | /* Select the TX/RX interface */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1021 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 1022 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1023 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1024 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 1025 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1026 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1027 | (void) inb(fir_base + IRCC_FIFO_THRESHOLD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | |
| 1029 | /* Enable SCE interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1030 | outb(0, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1032 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER); |
| 1033 | outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | } |
| 1035 | |
| 1036 | /* |
| 1037 | * Function smsc_ircc_fir_stop(self, baud) |
| 1038 | * |
| 1039 | * Change the speed of the device |
| 1040 | * |
| 1041 | */ |
| 1042 | static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self) |
| 1043 | { |
| 1044 | int fir_base; |
| 1045 | |
| 1046 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1047 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | IRDA_ASSERT(self != NULL, return;); |
| 1049 | |
| 1050 | fir_base = self->io.fir_base; |
| 1051 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1052 | /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/ |
| 1053 | 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] | 1054 | } |
| 1055 | |
| 1056 | |
| 1057 | /* |
| 1058 | * Function smsc_ircc_change_speed(self, baud) |
| 1059 | * |
| 1060 | * Change the speed of the device |
| 1061 | * |
| 1062 | * This function *must* be called with spinlock held, because it may |
| 1063 | * be called from the irq handler. - Jean II |
| 1064 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 1065 | 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] | 1066 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | int last_speed_was_sir; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | IRDA_DEBUG(0, "%s() changing speed to: %d\n", __FUNCTION__, speed); |
| 1071 | |
| 1072 | IRDA_ASSERT(self != NULL, return;); |
| 1073 | dev = self->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | |
| 1075 | last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED; |
| 1076 | |
| 1077 | #if 0 |
| 1078 | /* Temp Hack */ |
| 1079 | speed= 1152000; |
| 1080 | self->io.speed = speed; |
| 1081 | last_speed_was_sir = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1082 | smsc_ircc_fir_start(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1084 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1085 | if (self->io.speed == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | smsc_ircc_sir_start(self); |
| 1087 | |
| 1088 | #if 0 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1089 | if (!last_speed_was_sir) speed = self->io.speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | #endif |
| 1091 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1092 | if (self->io.speed != speed) |
| 1093 | smsc_ircc_set_transceiver_for_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | |
| 1095 | self->io.speed = speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1096 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1097 | if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
| 1098 | if (!last_speed_was_sir) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1099 | smsc_ircc_fir_stop(self); |
| 1100 | smsc_ircc_sir_start(self); |
| 1101 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1102 | smsc_ircc_set_sir_speed(self, speed); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1103 | } else { |
| 1104 | if (last_speed_was_sir) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1105 | #if SMSC_IRCC2_C_SIR_STOP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | smsc_ircc_sir_stop(self); |
| 1107 | #endif |
| 1108 | smsc_ircc_fir_start(self); |
| 1109 | } |
| 1110 | smsc_ircc_set_fir_speed(self, speed); |
| 1111 | |
| 1112 | #if 0 |
| 1113 | self->tx_buff.len = 10; |
| 1114 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1115 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1116 | smsc_ircc_dma_xmit(self, 4000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | #endif |
| 1118 | /* Be ready for incoming frames */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1119 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | netif_wake_queue(dev); |
| 1123 | } |
| 1124 | |
| 1125 | /* |
| 1126 | * Function smsc_ircc_set_sir_speed (self, speed) |
| 1127 | * |
| 1128 | * Set speed of IrDA port to specified baudrate |
| 1129 | * |
| 1130 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 1131 | 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] | 1132 | { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1133 | int iobase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | int fcr; /* FIFO control reg */ |
| 1135 | int lcr; /* Line control reg */ |
| 1136 | int divisor; |
| 1137 | |
| 1138 | IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __FUNCTION__, speed); |
| 1139 | |
| 1140 | IRDA_ASSERT(self != NULL, return;); |
| 1141 | iobase = self->io.sir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | /* Update accounting for new speed */ |
| 1144 | self->io.speed = speed; |
| 1145 | |
| 1146 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1147 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1149 | divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | fcr = UART_FCR_ENABLE_FIFO; |
| 1152 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1153 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and |
| 1155 | * 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] | 1156 | * about this timeout since it will always be fast enough. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1158 | fcr |= self->io.speed < 38400 ? |
| 1159 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | /* IrDA ports use 8N1 */ |
| 1162 | lcr = UART_LCR_WLEN8; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1163 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1164 | outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */ |
| 1165 | outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */ |
| 1166 | outb(divisor >> 8, iobase + UART_DLM); |
| 1167 | outb(lcr, iobase + UART_LCR); /* Set 8N1 */ |
| 1168 | outb(fcr, iobase + UART_FCR); /* Enable FIFO's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | |
| 1170 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1171 | 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] | 1172 | |
| 1173 | IRDA_DEBUG(2, "%s() speed changed to: %d\n", __FUNCTION__, speed); |
| 1174 | } |
| 1175 | |
| 1176 | |
| 1177 | /* |
| 1178 | * Function smsc_ircc_hard_xmit_fir (skb, dev) |
| 1179 | * |
| 1180 | * Transmit the frame! |
| 1181 | * |
| 1182 | */ |
| 1183 | static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev) |
| 1184 | { |
| 1185 | struct smsc_ircc_cb *self; |
| 1186 | unsigned long flags; |
| 1187 | s32 speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | int mtt; |
| 1189 | |
| 1190 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1191 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | IRDA_ASSERT(self != NULL, return 0;); |
| 1193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | netif_stop_queue(dev); |
| 1195 | |
| 1196 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 1197 | spin_lock_irqsave(&self->lock, flags); |
| 1198 | |
| 1199 | /* Check if we need to change the speed after this frame */ |
| 1200 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1201 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | /* Check for empty frame */ |
| 1203 | if (!skb->len) { |
| 1204 | /* Note : you should make sure that speed changes |
| 1205 | * are not going to corrupt any outgoing frame. |
| 1206 | * Look at nsc-ircc for the gory details - Jean II */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1207 | smsc_ircc_change_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | spin_unlock_irqrestore(&self->lock, flags); |
| 1209 | dev_kfree_skb(skb); |
| 1210 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1211 | } |
| 1212 | |
| 1213 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1215 | |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1216 | skb_copy_from_linear_data(skb, self->tx_buff.head, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | |
| 1218 | self->tx_buff.len = skb->len; |
| 1219 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1220 | |
| 1221 | mtt = irda_get_mtt(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | if (mtt) { |
| 1223 | int bofs; |
| 1224 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1225 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | * Compute how many BOFs (STA or PA's) we need to waste the |
| 1227 | * min turn time given the speed of the link. |
| 1228 | */ |
| 1229 | bofs = mtt * (self->io.speed / 1000) / 8000; |
| 1230 | if (bofs > 4095) |
| 1231 | bofs = 4095; |
| 1232 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1233 | smsc_ircc_dma_xmit(self, bofs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | } else { |
| 1235 | /* Transmit frame */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1236 | smsc_ircc_dma_xmit(self, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | spin_unlock_irqrestore(&self->lock, flags); |
| 1240 | dev_kfree_skb(skb); |
| 1241 | |
| 1242 | return 0; |
| 1243 | } |
| 1244 | |
| 1245 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1246 | * Function smsc_ircc_dma_xmit (self, bofs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | * |
| 1248 | * Transmit data using DMA |
| 1249 | * |
| 1250 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1251 | 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] | 1252 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1253 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | u8 ctrl; |
| 1255 | |
| 1256 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1257 | #if 1 |
| 1258 | /* Disable Rx */ |
| 1259 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1260 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | #endif |
| 1262 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1263 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1264 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | |
| 1266 | self->io.direction = IO_XMIT; |
| 1267 | |
| 1268 | /* Set BOF additional count for generating the min turn time */ |
| 1269 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1270 | outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO); |
| 1271 | ctrl = inb(iobase + IRCC_CONTROL) & 0xf0; |
| 1272 | outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1273 | |
| 1274 | /* Set max Tx frame size */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1275 | outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI); |
| 1276 | outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | |
| 1278 | /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1279 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | /* Enable burst mode chip Tx DMA */ |
| 1281 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1282 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1283 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | |
| 1285 | /* Setup DMA controller (must be done after enabling chip DMA) */ |
| 1286 | irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len, |
| 1287 | DMA_TX_MODE); |
| 1288 | |
| 1289 | /* Enable interrupt */ |
| 1290 | |
| 1291 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1292 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1293 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | /* Enable transmit */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1296 | 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] | 1297 | } |
| 1298 | |
| 1299 | /* |
| 1300 | * Function smsc_ircc_dma_xmit_complete (self) |
| 1301 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1302 | * 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] | 1303 | * by the interrupt handler |
| 1304 | * |
| 1305 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1306 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1308 | int iobase = self->io.fir_base; |
| 1309 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1311 | #if 0 |
| 1312 | /* Disable Tx */ |
| 1313 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1314 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | #endif |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1316 | register_bank(iobase, 1); |
| 1317 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1318 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | |
| 1320 | /* Check for underrun! */ |
| 1321 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1322 | if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | self->stats.tx_errors++; |
| 1324 | self->stats.tx_fifo_errors++; |
| 1325 | |
| 1326 | /* Reset error condition */ |
| 1327 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1328 | outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER); |
| 1329 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | } else { |
| 1331 | self->stats.tx_packets++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1332 | self->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | } |
| 1334 | |
| 1335 | /* Check if it's time to change the speed */ |
| 1336 | if (self->new_speed) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1337 | smsc_ircc_change_speed(self, self->new_speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | self->new_speed = 0; |
| 1339 | } |
| 1340 | |
| 1341 | netif_wake_queue(self->netdev); |
| 1342 | } |
| 1343 | |
| 1344 | /* |
| 1345 | * Function smsc_ircc_dma_receive(self) |
| 1346 | * |
| 1347 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1348 | * if it starts to receive a frame. |
| 1349 | * |
| 1350 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1351 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1352 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1353 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | #if 0 |
| 1355 | /* Turn off chip DMA */ |
| 1356 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1357 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1358 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | /* Disable Tx */ |
| 1362 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1363 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | |
| 1365 | /* Turn off chip DMA */ |
| 1366 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1367 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1368 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | |
| 1370 | self->io.direction = IO_RECV; |
| 1371 | self->rx_buff.data = self->rx_buff.head; |
| 1372 | |
| 1373 | /* Set max Rx frame size */ |
| 1374 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1375 | outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI); |
| 1376 | outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | |
| 1378 | /* Setup DMA controller */ |
| 1379 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1380 | DMA_RX_MODE); |
| 1381 | |
| 1382 | /* Enable burst mode chip Rx DMA */ |
| 1383 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1384 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1385 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | |
| 1387 | /* Enable interrupt */ |
| 1388 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1389 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1390 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | |
| 1392 | /* Enable receiver */ |
| 1393 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1394 | outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1395 | iobase + IRCC_LCR_B); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | return 0; |
| 1398 | } |
| 1399 | |
| 1400 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1401 | * Function smsc_ircc_dma_receive_complete(self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | * |
| 1403 | * Finished with receiving frames |
| 1404 | * |
| 1405 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1406 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1407 | { |
| 1408 | struct sk_buff *skb; |
| 1409 | int len, msgcnt, lsr; |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1410 | int iobase = self->io.fir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1415 | #if 0 |
| 1416 | /* Disable Rx */ |
| 1417 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1418 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | #endif |
| 1420 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1421 | outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR); |
| 1422 | lsr= inb(iobase + IRCC_LSR); |
| 1423 | msgcnt = inb(iobase + IRCC_LCR_B) & 0x08; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | |
| 1425 | IRDA_DEBUG(2, "%s: dma count = %d\n", __FUNCTION__, |
| 1426 | get_dma_residue(self->io.dma)); |
| 1427 | |
| 1428 | len = self->rx_buff.truesize - get_dma_residue(self->io.dma); |
| 1429 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1430 | /* Look for errors */ |
| 1431 | 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] | 1432 | self->stats.rx_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1433 | if (lsr & IRCC_LSR_FRAME_ERROR) |
| 1434 | self->stats.rx_frame_errors++; |
| 1435 | if (lsr & IRCC_LSR_CRC_ERROR) |
| 1436 | self->stats.rx_crc_errors++; |
| 1437 | if (lsr & IRCC_LSR_SIZE_ERROR) |
| 1438 | self->stats.rx_length_errors++; |
| 1439 | if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN)) |
| 1440 | self->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | return; |
| 1442 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1444 | /* Remove CRC */ |
| 1445 | len -= self->io.speed < 4000000 ? 2 : 4; |
| 1446 | |
| 1447 | if (len < 2 || len > 2050) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | IRDA_WARNING("%s(), bogus len=%d\n", __FUNCTION__, len); |
| 1449 | return; |
| 1450 | } |
| 1451 | IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __FUNCTION__, msgcnt, len); |
| 1452 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1453 | skb = dev_alloc_skb(len + 1); |
| 1454 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | IRDA_WARNING("%s(), memory squeeze, dropping frame.\n", |
| 1456 | __FUNCTION__); |
| 1457 | return; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1458 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | /* Make sure IP header gets aligned */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1460 | skb_reserve(skb, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | |
| 1462 | memcpy(skb_put(skb, len), self->rx_buff.data, len); |
| 1463 | self->stats.rx_packets++; |
| 1464 | self->stats.rx_bytes += len; |
| 1465 | |
| 1466 | skb->dev = self->netdev; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1467 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | skb->protocol = htons(ETH_P_IRDA); |
| 1469 | netif_rx(skb); |
| 1470 | } |
| 1471 | |
| 1472 | /* |
| 1473 | * Function smsc_ircc_sir_receive (self) |
| 1474 | * |
| 1475 | * Receive one frame from the infrared port |
| 1476 | * |
| 1477 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1478 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | { |
| 1480 | int boguscount = 0; |
| 1481 | int iobase; |
| 1482 | |
| 1483 | IRDA_ASSERT(self != NULL, return;); |
| 1484 | |
| 1485 | iobase = self->io.sir_base; |
| 1486 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1487 | /* |
| 1488 | * Receive all characters in Rx FIFO, unwrap and unstuff them. |
| 1489 | * async_unwrap_char will deliver all found frames |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | */ |
| 1491 | do { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1492 | async_unwrap_char(self->netdev, &self->stats, &self->rx_buff, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1493 | inb(iobase + UART_RX)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1494 | |
| 1495 | /* Make sure we don't stay here to long */ |
| 1496 | if (boguscount++ > 32) { |
| 1497 | IRDA_DEBUG(2, "%s(), breaking!\n", __FUNCTION__); |
| 1498 | break; |
| 1499 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1500 | } while (inb(iobase + UART_LSR) & UART_LSR_DR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | } |
| 1502 | |
| 1503 | |
| 1504 | /* |
| 1505 | * Function smsc_ircc_interrupt (irq, dev_id, regs) |
| 1506 | * |
| 1507 | * An interrupt from the chip has arrived. Time to do some work |
| 1508 | * |
| 1509 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1510 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | { |
| 1512 | struct net_device *dev = (struct net_device *) dev_id; |
| 1513 | struct smsc_ircc_cb *self; |
| 1514 | int iobase, iir, lcra, lsr; |
| 1515 | irqreturn_t ret = IRQ_NONE; |
| 1516 | |
| 1517 | if (dev == NULL) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1518 | printk(KERN_WARNING "%s: irq %d for unknown device.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1519 | driver_name, irq); |
| 1520 | goto irq_ret; |
| 1521 | } |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1522 | |
| 1523 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | IRDA_ASSERT(self != NULL, return IRQ_NONE;); |
| 1525 | |
| 1526 | /* Serialise the interrupt handler in various CPUs, stop Tx path */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1527 | spin_lock(&self->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | |
| 1529 | /* Check if we should use the SIR interrupt handler */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1530 | if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | ret = smsc_ircc_interrupt_sir(dev); |
| 1532 | goto irq_ret_unlock; |
| 1533 | } |
| 1534 | |
| 1535 | iobase = self->io.fir_base; |
| 1536 | |
| 1537 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1538 | iir = inb(iobase + IRCC_IIR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1539 | if (iir == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | goto irq_ret_unlock; |
| 1541 | ret = IRQ_HANDLED; |
| 1542 | |
| 1543 | /* Disable interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1544 | outb(0, iobase + IRCC_IER); |
| 1545 | lcra = inb(iobase + IRCC_LCR_A); |
| 1546 | lsr = inb(iobase + IRCC_LSR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __FUNCTION__, iir); |
| 1549 | |
| 1550 | if (iir & IRCC_IIR_EOM) { |
| 1551 | if (self->io.direction == IO_RECV) |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1552 | smsc_ircc_dma_receive_complete(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | else |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1554 | smsc_ircc_dma_xmit_complete(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1555 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1556 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | } |
| 1558 | |
| 1559 | if (iir & IRCC_IIR_ACTIVE_FRAME) { |
| 1560 | /*printk(KERN_WARNING "%s(): Active Frame\n", __FUNCTION__);*/ |
| 1561 | } |
| 1562 | |
| 1563 | /* Enable interrupts again */ |
| 1564 | |
| 1565 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1566 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | |
| 1568 | irq_ret_unlock: |
| 1569 | spin_unlock(&self->lock); |
| 1570 | irq_ret: |
| 1571 | return ret; |
| 1572 | } |
| 1573 | |
| 1574 | /* |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1575 | * Function irport_interrupt_sir (irq, dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | * |
| 1577 | * Interrupt handler for SIR modes |
| 1578 | */ |
| 1579 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev) |
| 1580 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1581 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | int boguscount = 0; |
| 1583 | int iobase; |
| 1584 | int iir, lsr; |
| 1585 | |
| 1586 | /* Already locked comming here in smsc_ircc_interrupt() */ |
| 1587 | /*spin_lock(&self->lock);*/ |
| 1588 | |
| 1589 | iobase = self->io.sir_base; |
| 1590 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1591 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | if (iir == 0) |
| 1593 | return IRQ_NONE; |
| 1594 | while (iir) { |
| 1595 | /* Clear interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1596 | lsr = inb(iobase + UART_LSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1598 | IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | __FUNCTION__, iir, lsr, iobase); |
| 1600 | |
| 1601 | switch (iir) { |
| 1602 | case UART_IIR_RLSI: |
| 1603 | IRDA_DEBUG(2, "%s(), RLSI\n", __FUNCTION__); |
| 1604 | break; |
| 1605 | case UART_IIR_RDI: |
| 1606 | /* Receive interrupt */ |
| 1607 | smsc_ircc_sir_receive(self); |
| 1608 | break; |
| 1609 | case UART_IIR_THRI: |
| 1610 | if (lsr & UART_LSR_THRE) |
| 1611 | /* Transmitter ready for data */ |
| 1612 | smsc_ircc_sir_write_wakeup(self); |
| 1613 | break; |
| 1614 | default: |
| 1615 | IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", |
| 1616 | __FUNCTION__, iir); |
| 1617 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1618 | } |
| 1619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | /* Make sure we don't stay here to long */ |
| 1621 | if (boguscount++ > 100) |
| 1622 | break; |
| 1623 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1624 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | } |
| 1626 | /*spin_unlock(&self->lock);*/ |
| 1627 | return IRQ_HANDLED; |
| 1628 | } |
| 1629 | |
| 1630 | |
| 1631 | #if 0 /* unused */ |
| 1632 | /* |
| 1633 | * Function ircc_is_receiving (self) |
| 1634 | * |
| 1635 | * Return TRUE is we are currently receiving a frame |
| 1636 | * |
| 1637 | */ |
| 1638 | static int ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1639 | { |
| 1640 | int status = FALSE; |
| 1641 | /* int iobase; */ |
| 1642 | |
| 1643 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1644 | |
| 1645 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 1646 | |
| 1647 | IRDA_DEBUG(0, "%s: dma count = %d\n", __FUNCTION__, |
| 1648 | get_dma_residue(self->io.dma)); |
| 1649 | |
| 1650 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1651 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | return status; |
| 1653 | } |
| 1654 | #endif /* unused */ |
| 1655 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1656 | static int smsc_ircc_request_irq(struct smsc_ircc_cb *self) |
| 1657 | { |
| 1658 | int error; |
| 1659 | |
| 1660 | error = request_irq(self->io.irq, smsc_ircc_interrupt, 0, |
| 1661 | self->netdev->name, self->netdev); |
| 1662 | if (error) |
| 1663 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n", |
| 1664 | __FUNCTION__, self->io.irq, error); |
| 1665 | |
| 1666 | return error; |
| 1667 | } |
| 1668 | |
| 1669 | static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self) |
| 1670 | { |
| 1671 | unsigned long flags; |
| 1672 | |
| 1673 | spin_lock_irqsave(&self->lock, flags); |
| 1674 | |
| 1675 | self->io.speed = 0; |
| 1676 | smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
| 1677 | |
| 1678 | spin_unlock_irqrestore(&self->lock, flags); |
| 1679 | } |
| 1680 | |
| 1681 | static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self) |
| 1682 | { |
| 1683 | int iobase = self->io.fir_base; |
| 1684 | unsigned long flags; |
| 1685 | |
| 1686 | spin_lock_irqsave(&self->lock, flags); |
| 1687 | |
| 1688 | register_bank(iobase, 0); |
| 1689 | outb(0, iobase + IRCC_IER); |
| 1690 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 1691 | outb(0x00, iobase + IRCC_MASTER); |
| 1692 | |
| 1693 | spin_unlock_irqrestore(&self->lock, flags); |
| 1694 | } |
| 1695 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | |
| 1697 | /* |
| 1698 | * Function smsc_ircc_net_open (dev) |
| 1699 | * |
| 1700 | * Start the device |
| 1701 | * |
| 1702 | */ |
| 1703 | static int smsc_ircc_net_open(struct net_device *dev) |
| 1704 | { |
| 1705 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | char hwname[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | |
| 1708 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1709 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1711 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1713 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1714 | if (self->io.suspended) { |
| 1715 | IRDA_DEBUG(0, "%s(), device is suspended\n", __FUNCTION__); |
| 1716 | return -EAGAIN; |
| 1717 | } |
| 1718 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1719 | if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1720 | (void *) dev)) { |
| 1721 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n", |
| 1722 | __FUNCTION__, self->io.irq); |
| 1723 | return -EAGAIN; |
| 1724 | } |
| 1725 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1726 | smsc_ircc_start_interrupts(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1727 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | /* Give self a hardware name */ |
| 1729 | /* It would be cool to offer the chip revision here - Jean II */ |
| 1730 | sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base); |
| 1731 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1732 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | * Open new IrLAP layer instance, now that everything should be |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1734 | * initialized properly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | */ |
| 1736 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 1737 | |
| 1738 | /* |
| 1739 | * Always allocate the DMA channel after the IRQ, |
| 1740 | * and clean up on failure. |
| 1741 | */ |
| 1742 | if (request_dma(self->io.dma, dev->name)) { |
| 1743 | smsc_ircc_net_close(dev); |
| 1744 | |
| 1745 | IRDA_WARNING("%s(), unable to allocate DMA=%d\n", |
| 1746 | __FUNCTION__, self->io.dma); |
| 1747 | return -EAGAIN; |
| 1748 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1749 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | netif_start_queue(dev); |
| 1751 | |
| 1752 | return 0; |
| 1753 | } |
| 1754 | |
| 1755 | /* |
| 1756 | * Function smsc_ircc_net_close (dev) |
| 1757 | * |
| 1758 | * Stop the device |
| 1759 | * |
| 1760 | */ |
| 1761 | static int smsc_ircc_net_close(struct net_device *dev) |
| 1762 | { |
| 1763 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | |
| 1765 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1766 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1768 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | /* Stop device */ |
| 1772 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | /* Stop and remove instance of IrLAP */ |
| 1775 | if (self->irlap) |
| 1776 | irlap_close(self->irlap); |
| 1777 | self->irlap = NULL; |
| 1778 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1779 | smsc_ircc_stop_interrupts(self); |
| 1780 | |
| 1781 | /* if we are called from smsc_ircc_resume we don't have IRQ reserved */ |
| 1782 | if (!self->io.suspended) |
| 1783 | free_irq(self->io.irq, dev); |
| 1784 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | disable_dma(self->io.dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1786 | free_dma(self->io.dma); |
| 1787 | |
| 1788 | return 0; |
| 1789 | } |
| 1790 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1791 | 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] | 1792 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1793 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1794 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1795 | if (!self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1796 | IRDA_DEBUG(1, "%s, Suspending\n", driver_name); |
| 1797 | |
| 1798 | rtnl_lock(); |
| 1799 | if (netif_running(self->netdev)) { |
| 1800 | netif_device_detach(self->netdev); |
| 1801 | smsc_ircc_stop_interrupts(self); |
| 1802 | free_irq(self->io.irq, self->netdev); |
| 1803 | disable_dma(self->io.dma); |
| 1804 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1805 | self->io.suspended = 1; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1806 | rtnl_unlock(); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1807 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1808 | |
| 1809 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | } |
| 1811 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1812 | static int smsc_ircc_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1814 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1815 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1816 | if (self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1817 | IRDA_DEBUG(1, "%s, Waking up\n", driver_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1818 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1819 | rtnl_lock(); |
| 1820 | smsc_ircc_init_chip(self); |
| 1821 | if (netif_running(self->netdev)) { |
| 1822 | if (smsc_ircc_request_irq(self)) { |
| 1823 | /* |
| 1824 | * Don't fail resume process, just kill this |
| 1825 | * network interface |
| 1826 | */ |
| 1827 | unregister_netdevice(self->netdev); |
| 1828 | } else { |
| 1829 | enable_dma(self->io.dma); |
| 1830 | smsc_ircc_start_interrupts(self); |
| 1831 | netif_device_attach(self->netdev); |
| 1832 | } |
| 1833 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1834 | self->io.suspended = 0; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1835 | rtnl_unlock(); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1836 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | return 0; |
| 1838 | } |
| 1839 | |
| 1840 | /* |
| 1841 | * Function smsc_ircc_close (self) |
| 1842 | * |
| 1843 | * Close driver instance |
| 1844 | * |
| 1845 | */ |
| 1846 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self) |
| 1847 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1849 | |
| 1850 | IRDA_ASSERT(self != NULL, return -1;); |
| 1851 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1852 | platform_device_unregister(self->pldev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | |
| 1854 | /* Remove netdevice */ |
| 1855 | unregister_netdev(self->netdev); |
| 1856 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1857 | smsc_ircc_stop_interrupts(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | |
| 1859 | /* Release the PORTS that this driver is using */ |
| 1860 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
| 1861 | self->io.fir_base); |
| 1862 | |
| 1863 | release_region(self->io.fir_base, self->io.fir_ext); |
| 1864 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1865 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __FUNCTION__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1866 | self->io.sir_base); |
| 1867 | |
| 1868 | release_region(self->io.sir_base, self->io.sir_ext); |
| 1869 | |
| 1870 | if (self->tx_buff.head) |
| 1871 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 1872 | self->tx_buff.head, self->tx_buff_dma); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1873 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1874 | if (self->rx_buff.head) |
| 1875 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 1876 | self->rx_buff.head, self->rx_buff_dma); |
| 1877 | |
| 1878 | free_netdev(self->netdev); |
| 1879 | |
| 1880 | return 0; |
| 1881 | } |
| 1882 | |
| 1883 | static void __exit smsc_ircc_cleanup(void) |
| 1884 | { |
| 1885 | int i; |
| 1886 | |
| 1887 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 1888 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1889 | for (i = 0; i < 2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1890 | if (dev_self[i]) |
| 1891 | smsc_ircc_close(dev_self[i]); |
| 1892 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1893 | |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame^] | 1894 | if (pnp_driver_registered) |
| 1895 | pnp_unregister_driver(&smsc_ircc_pnp_driver); |
| 1896 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1897 | platform_driver_unregister(&smsc_ircc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | } |
| 1899 | |
| 1900 | /* |
| 1901 | * Start SIR operations |
| 1902 | * |
| 1903 | * This function *must* be called with spinlock held, because it may |
| 1904 | * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II |
| 1905 | */ |
| 1906 | void smsc_ircc_sir_start(struct smsc_ircc_cb *self) |
| 1907 | { |
| 1908 | struct net_device *dev; |
| 1909 | int fir_base, sir_base; |
| 1910 | |
| 1911 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1912 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1913 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1914 | dev = self->netdev; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1915 | IRDA_ASSERT(dev != NULL, return;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | dev->hard_start_xmit = &smsc_ircc_hard_xmit_sir; |
| 1917 | |
| 1918 | fir_base = self->io.fir_base; |
| 1919 | sir_base = self->io.sir_base; |
| 1920 | |
| 1921 | /* Reset everything */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1922 | outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | |
| 1924 | #if SMSC_IRCC2_C_SIR_STOP |
| 1925 | /*smsc_ircc_sir_stop(self);*/ |
| 1926 | #endif |
| 1927 | |
| 1928 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1929 | 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] | 1930 | |
| 1931 | /* Initialize UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1932 | outb(UART_LCR_WLEN8, sir_base + UART_LCR); /* Reset DLAB */ |
| 1933 | 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] | 1934 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1936 | 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] | 1937 | |
| 1938 | IRDA_DEBUG(3, "%s() - exit\n", __FUNCTION__); |
| 1939 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1940 | outb(0x00, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | } |
| 1942 | |
| 1943 | #if SMSC_IRCC2_C_SIR_STOP |
| 1944 | void smsc_ircc_sir_stop(struct smsc_ircc_cb *self) |
| 1945 | { |
| 1946 | int iobase; |
| 1947 | |
| 1948 | IRDA_DEBUG(3, "%s\n", __FUNCTION__); |
| 1949 | iobase = self->io.sir_base; |
| 1950 | |
| 1951 | /* Reset UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1952 | outb(0, iobase + UART_MCR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1953 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1955 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | } |
| 1957 | #endif |
| 1958 | |
| 1959 | /* |
| 1960 | * Function smsc_sir_write_wakeup (self) |
| 1961 | * |
| 1962 | * Called by the SIR interrupt handler when there's room for more data. |
| 1963 | * If we have more packets to send, we send them here. |
| 1964 | * |
| 1965 | */ |
| 1966 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self) |
| 1967 | { |
| 1968 | int actual = 0; |
| 1969 | int iobase; |
| 1970 | int fcr; |
| 1971 | |
| 1972 | IRDA_ASSERT(self != NULL, return;); |
| 1973 | |
| 1974 | IRDA_DEBUG(4, "%s\n", __FUNCTION__); |
| 1975 | |
| 1976 | iobase = self->io.sir_base; |
| 1977 | |
| 1978 | /* Finished with frame? */ |
| 1979 | if (self->tx_buff.len > 0) { |
| 1980 | /* Write data left in transmit buffer */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1981 | actual = smsc_ircc_sir_write(iobase, self->io.fifo_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | self->tx_buff.data, self->tx_buff.len); |
| 1983 | self->tx_buff.data += actual; |
| 1984 | self->tx_buff.len -= actual; |
| 1985 | } else { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1986 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | /*if (self->tx_buff.len ==0) {*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1988 | |
| 1989 | /* |
| 1990 | * Now serial buffer is almost free & we can start |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | * transmission of another packet. But first we must check |
| 1992 | * if we need to change the speed of the hardware |
| 1993 | */ |
| 1994 | if (self->new_speed) { |
| 1995 | IRDA_DEBUG(5, "%s(), Changing speed to %d.\n", |
| 1996 | __FUNCTION__, self->new_speed); |
| 1997 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 1998 | smsc_ircc_change_speed(self, self->new_speed); |
| 1999 | self->new_speed = 0; |
| 2000 | } else { |
| 2001 | /* Tell network layer that we want more frames */ |
| 2002 | netif_wake_queue(self->netdev); |
| 2003 | } |
| 2004 | self->stats.tx_packets++; |
| 2005 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2006 | if (self->io.speed <= 115200) { |
| 2007 | /* |
| 2008 | * Reset Rx FIFO to make sure that all reflected transmit data |
| 2009 | * is discarded. This is needed for half duplex operation |
| 2010 | */ |
| 2011 | fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR; |
| 2012 | fcr |= self->io.speed < 38400 ? |
| 2013 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2015 | outb(fcr, iobase + UART_FCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2017 | /* Turn on receive interrupts */ |
| 2018 | outb(UART_IER_RDI, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | } |
| 2020 | } |
| 2021 | } |
| 2022 | |
| 2023 | /* |
| 2024 | * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len) |
| 2025 | * |
| 2026 | * Fill Tx FIFO with transmit data |
| 2027 | * |
| 2028 | */ |
| 2029 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) |
| 2030 | { |
| 2031 | int actual = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2033 | /* Tx FIFO should be empty! */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2034 | if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | IRDA_WARNING("%s(), failed, fifo not empty!\n", __FUNCTION__); |
| 2036 | return 0; |
| 2037 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2038 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | /* Fill FIFO with current frame */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2040 | while (fifo_size-- > 0 && actual < len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | /* Transmit next byte */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2042 | outb(buf[actual], iobase + UART_TX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | actual++; |
| 2044 | } |
| 2045 | return actual; |
| 2046 | } |
| 2047 | |
| 2048 | /* |
| 2049 | * Function smsc_ircc_is_receiving (self) |
| 2050 | * |
| 2051 | * Returns true is we are currently receiving data |
| 2052 | * |
| 2053 | */ |
| 2054 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self) |
| 2055 | { |
| 2056 | return (self->rx_buff.state != OUTSIDE_FRAME); |
| 2057 | } |
| 2058 | |
| 2059 | |
| 2060 | /* |
| 2061 | * Function smsc_ircc_probe_transceiver(self) |
| 2062 | * |
| 2063 | * Tries to find the used Transceiver |
| 2064 | * |
| 2065 | */ |
| 2066 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self) |
| 2067 | { |
| 2068 | unsigned int i; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2069 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2071 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2072 | for (i = 0; smsc_transceivers[i].name != NULL; i++) |
| 2073 | if (smsc_transceivers[i].probe(self->io.fir_base)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2074 | IRDA_MESSAGE(" %s transceiver found\n", |
| 2075 | smsc_transceivers[i].name); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2076 | self->transceiver= i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | return; |
| 2078 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2079 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2080 | IRDA_MESSAGE("No transceiver found. Defaulting to %s\n", |
| 2081 | smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2082 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2083 | self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | } |
| 2085 | |
| 2086 | |
| 2087 | /* |
| 2088 | * Function smsc_ircc_set_transceiver_for_speed(self, speed) |
| 2089 | * |
| 2090 | * Set the transceiver according to the speed |
| 2091 | * |
| 2092 | */ |
| 2093 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed) |
| 2094 | { |
| 2095 | unsigned int trx; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2096 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | trx = self->transceiver; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2098 | if (trx > 0) |
| 2099 | smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | } |
| 2101 | |
| 2102 | /* |
| 2103 | * Function smsc_ircc_wait_hw_transmitter_finish () |
| 2104 | * |
| 2105 | * Wait for the real end of HW transmission |
| 2106 | * |
| 2107 | * The UART is a strict FIFO, and we get called only when we have finished |
| 2108 | * pushing data to the FIFO, so the maximum amount of time we must wait |
| 2109 | * is only for the FIFO to drain out. |
| 2110 | * |
| 2111 | * We use a simple calibrated loop. We may need to adjust the loop |
| 2112 | * delay (udelay) to balance I/O traffic and latency. And we also need to |
| 2113 | * adjust the maximum timeout. |
| 2114 | * It would probably be better to wait for the proper interrupt, |
| 2115 | * but it doesn't seem to be available. |
| 2116 | * |
| 2117 | * We can't use jiffies or kernel timers because : |
| 2118 | * 1) We are called from the interrupt handler, which disable softirqs, |
| 2119 | * so jiffies won't be increased |
| 2120 | * 2) Jiffies granularity is usually very coarse (10ms), and we don't |
| 2121 | * want to wait that long to detect stuck hardware. |
| 2122 | * Jean II |
| 2123 | */ |
| 2124 | |
| 2125 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self) |
| 2126 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2127 | int iobase = self->io.sir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2129 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | /* Calibrated busy loop */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2131 | while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | udelay(1); |
| 2133 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2134 | if (count == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | IRDA_DEBUG(0, "%s(): stuck transmitter\n", __FUNCTION__); |
| 2136 | } |
| 2137 | |
| 2138 | |
| 2139 | /* PROBING |
| 2140 | * |
David Brownell | d94c77b | 2006-05-09 15:26:11 -0700 | [diff] [blame] | 2141 | * REVISIT we can be told about the device by PNP, and should use that info |
| 2142 | * instead of probing hardware and creating a platform_device ... |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | */ |
| 2144 | |
| 2145 | static int __init smsc_ircc_look_for_chips(void) |
| 2146 | { |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2147 | struct smsc_chip_address *address; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2148 | char *type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | unsigned int cfg_base, found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2151 | found = 0; |
| 2152 | address = possible_addresses; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2153 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2154 | while (address->cfg_base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2155 | cfg_base = address->cfg_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | /*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] | 2158 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2159 | if (address->type & SMSCSIO_TYPE_FDC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2160 | type = "FDC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2161 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2162 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type)) |
| 2163 | found++; |
| 2164 | |
| 2165 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2166 | if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type)) |
| 2167 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2169 | if (address->type & SMSCSIO_TYPE_LPC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | type = "LPC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2171 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2172 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type)) |
| 2173 | found++; |
| 2174 | |
| 2175 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2176 | if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type)) |
| 2177 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | } |
| 2179 | address++; |
| 2180 | } |
| 2181 | return found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2182 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | |
| 2184 | /* |
| 2185 | * Function smsc_superio_flat (chip, base, type) |
| 2186 | * |
| 2187 | * Try to get configuration of a smc SuperIO chip with flat register model |
| 2188 | * |
| 2189 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2190 | 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] | 2191 | { |
| 2192 | unsigned short firbase, sirbase; |
| 2193 | u8 mode, dma, irq; |
| 2194 | int ret = -ENODEV; |
| 2195 | |
| 2196 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2197 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2198 | if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | return ret; |
| 2200 | |
| 2201 | outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2202 | mode = inb(cfgbase + 1); |
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 | /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __FUNCTION__, mode);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2205 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2206 | if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | IRDA_WARNING("%s(): IrDA not enabled\n", __FUNCTION__); |
| 2208 | |
| 2209 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2210 | sirbase = inb(cfgbase + 1) << 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2212 | /* FIR iobase */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2214 | firbase = inb(cfgbase + 1) << 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2215 | |
| 2216 | /* DMA */ |
| 2217 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2218 | dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | /* IRQ */ |
| 2221 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2222 | irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2223 | |
| 2224 | IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __FUNCTION__, firbase, sirbase, dma, irq, mode); |
| 2225 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2226 | if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0) |
| 2227 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | /* Exit configuration */ |
| 2230 | outb(SMSCSIO_CFGEXITKEY, cfgbase); |
| 2231 | |
| 2232 | return ret; |
| 2233 | } |
| 2234 | |
| 2235 | /* |
| 2236 | * Function smsc_superio_paged (chip, base, type) |
| 2237 | * |
| 2238 | * Try to get configuration of a smc SuperIO chip with paged register model |
| 2239 | * |
| 2240 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2241 | 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] | 2242 | { |
| 2243 | unsigned short fir_io, sir_io; |
| 2244 | int ret = -ENODEV; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2245 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2247 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2248 | if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | return ret; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2250 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | /* Select logical device (UART2) */ |
| 2252 | outb(0x07, cfg_base); |
| 2253 | outb(0x05, cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | /* SIR iobase */ |
| 2256 | outb(0x60, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2257 | sir_io = inb(cfg_base + 1) << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2258 | outb(0x61, cfg_base); |
| 2259 | sir_io |= inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | /* Read FIR base */ |
| 2262 | outb(0x62, cfg_base); |
| 2263 | fir_io = inb(cfg_base + 1) << 8; |
| 2264 | outb(0x63, cfg_base); |
| 2265 | fir_io |= inb(cfg_base + 1); |
| 2266 | outb(0x2b, cfg_base); /* ??? */ |
| 2267 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2268 | if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0) |
| 2269 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2271 | /* Exit configuration */ |
| 2272 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2273 | |
| 2274 | return ret; |
| 2275 | } |
| 2276 | |
| 2277 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2278 | static int __init smsc_access(unsigned short cfg_base, unsigned char reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2279 | { |
| 2280 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2281 | |
| 2282 | outb(reg, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2283 | return inb(cfg_base) != reg ? -1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | } |
| 2285 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2286 | 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] | 2287 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2288 | u8 devid, xdevid, rev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | |
| 2290 | IRDA_DEBUG(1, "%s\n", __FUNCTION__); |
| 2291 | |
| 2292 | /* Leave configuration */ |
| 2293 | |
| 2294 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2295 | |
| 2296 | if (inb(cfg_base) == SMSCSIO_CFGEXITKEY) /* not a smc superio chip */ |
| 2297 | return NULL; |
| 2298 | |
| 2299 | outb(reg, cfg_base); |
| 2300 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2301 | xdevid = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | |
| 2303 | /* Enter configuration */ |
| 2304 | |
| 2305 | outb(SMSCSIO_CFGACCESSKEY, cfg_base); |
| 2306 | |
| 2307 | #if 0 |
| 2308 | if (smsc_access(cfg_base,0x55)) /* send second key and check */ |
| 2309 | return NULL; |
| 2310 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | /* probe device ID */ |
| 2313 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2314 | if (smsc_access(cfg_base, reg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | return NULL; |
| 2316 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2317 | devid = inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2318 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2319 | if (devid == 0 || devid == 0xff) /* typical values for unused port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | return NULL; |
| 2321 | |
| 2322 | /* probe revision ID */ |
| 2323 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2324 | if (smsc_access(cfg_base, reg + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2325 | return NULL; |
| 2326 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2327 | rev = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2329 | if (rev >= 128) /* i think this will make no sense */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2330 | return NULL; |
| 2331 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2332 | if (devid == xdevid) /* protection against false positives */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | return NULL; |
| 2334 | |
| 2335 | /* Check for expected device ID; are there others? */ |
| 2336 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2337 | while (chip->devid != devid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | |
| 2339 | chip++; |
| 2340 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2341 | if (chip->name == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2342 | return NULL; |
| 2343 | } |
| 2344 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2345 | IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n", |
| 2346 | devid, rev, cfg_base, type, chip->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2347 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2348 | if (chip->rev > rev) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2349 | IRDA_MESSAGE("Revision higher than expected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2350 | return NULL; |
| 2351 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2352 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2353 | if (chip->flags & NoIRDA) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2354 | IRDA_MESSAGE("chipset does not support IRDA\n"); |
| 2355 | |
| 2356 | return chip; |
| 2357 | } |
| 2358 | |
| 2359 | static int __init smsc_superio_fdc(unsigned short cfg_base) |
| 2360 | { |
| 2361 | int ret = -1; |
| 2362 | |
| 2363 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2364 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2365 | __FUNCTION__, cfg_base); |
| 2366 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2367 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") || |
| 2368 | !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | ret = 0; |
| 2370 | |
| 2371 | release_region(cfg_base, 2); |
| 2372 | } |
| 2373 | |
| 2374 | return ret; |
| 2375 | } |
| 2376 | |
| 2377 | static int __init smsc_superio_lpc(unsigned short cfg_base) |
| 2378 | { |
| 2379 | int ret = -1; |
| 2380 | |
| 2381 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2382 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
| 2383 | __FUNCTION__, cfg_base); |
| 2384 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2385 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") || |
| 2386 | !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2387 | ret = 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | release_region(cfg_base, 2); |
| 2390 | } |
| 2391 | return ret; |
| 2392 | } |
| 2393 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2394 | /* |
| 2395 | * Look for some specific subsystem setups that need |
| 2396 | * pre-configuration not properly done by the BIOS (especially laptops) |
| 2397 | * This code is based in part on smcinit.c, tosh1800-smcinit.c |
| 2398 | * and tosh2450-smcinit.c. The table lists the device entries |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2399 | * for ISA bridges with an LPC (Low Pin Count) controller which |
| 2400 | * handles the communication with the SMSC device. After the LPC |
| 2401 | * controller is initialized through PCI, the SMSC device is initialized |
| 2402 | * through a dedicated port in the ISA port-mapped I/O area, this latter |
| 2403 | * area is used to configure the SMSC device with default |
| 2404 | * SIR and FIR I/O ports, DMA and IRQ. Different vendors have |
| 2405 | * used different sets of parameters and different control port |
| 2406 | * addresses making a subsystem device table necessary. |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2407 | */ |
| 2408 | #ifdef CONFIG_PCI |
| 2409 | #define PCIID_VENDOR_INTEL 0x8086 |
| 2410 | #define PCIID_VENDOR_ALI 0x10b9 |
Dmitry Torokhov | c5d965c | 2006-07-06 23:58:27 -0700 | [diff] [blame] | 2411 | static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __initdata = { |
Linus Walleij (LD/EAB | 895de09 | 2006-09-27 22:49:23 -0700 | [diff] [blame] | 2412 | /* |
| 2413 | * Subsystems needing entries: |
| 2414 | * 0x10b9:0x1533 0x103c:0x0850 HP nx9010 family |
| 2415 | * 0x10b9:0x1533 0x0e11:0x005a Compaq nc4000 family |
| 2416 | * 0x8086:0x24cc 0x0e11:0x002a HP nx9000 family |
| 2417 | */ |
| 2418 | { |
| 2419 | /* Guessed entry */ |
| 2420 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2421 | .device = 0x24cc, |
| 2422 | .subvendor = 0x103c, |
| 2423 | .subdevice = 0x08bc, |
| 2424 | .sir_io = 0x02f8, |
| 2425 | .fir_io = 0x0130, |
| 2426 | .fir_irq = 0x05, |
| 2427 | .fir_dma = 0x03, |
| 2428 | .cfg_base = 0x004e, |
| 2429 | .preconfigure = preconfigure_through_82801, |
| 2430 | .name = "HP nx5000 family", |
| 2431 | }, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2432 | { |
| 2433 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2434 | .device = 0x24cc, |
| 2435 | .subvendor = 0x103c, |
| 2436 | .subdevice = 0x088c, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2437 | /* Quite certain these are the same for nc8000 as for nc6000 */ |
| 2438 | .sir_io = 0x02f8, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2439 | .fir_io = 0x0130, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2440 | .fir_irq = 0x05, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2441 | .fir_dma = 0x03, |
| 2442 | .cfg_base = 0x004e, |
| 2443 | .preconfigure = preconfigure_through_82801, |
Linus Walleij (LD/EAB | 895de09 | 2006-09-27 22:49:23 -0700 | [diff] [blame] | 2444 | .name = "HP nc8000 family", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2445 | }, |
| 2446 | { |
| 2447 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2448 | .device = 0x24cc, |
| 2449 | .subvendor = 0x103c, |
| 2450 | .subdevice = 0x0890, |
| 2451 | .sir_io = 0x02f8, |
| 2452 | .fir_io = 0x0130, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2453 | .fir_irq = 0x05, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2454 | .fir_dma = 0x03, |
| 2455 | .cfg_base = 0x004e, |
| 2456 | .preconfigure = preconfigure_through_82801, |
Linus Walleij (LD/EAB | 895de09 | 2006-09-27 22:49:23 -0700 | [diff] [blame] | 2457 | .name = "HP nc6000 family", |
| 2458 | }, |
| 2459 | { |
| 2460 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2461 | .device = 0x24cc, |
| 2462 | .subvendor = 0x0e11, |
| 2463 | .subdevice = 0x0860, |
| 2464 | /* I assume these are the same for x1000 as for the others */ |
| 2465 | .sir_io = 0x02e8, |
| 2466 | .fir_io = 0x02f8, |
| 2467 | .fir_irq = 0x07, |
| 2468 | .fir_dma = 0x03, |
| 2469 | .cfg_base = 0x002e, |
| 2470 | .preconfigure = preconfigure_through_82801, |
| 2471 | .name = "Compaq x1000 family", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2472 | }, |
| 2473 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2474 | /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */ |
| 2475 | .vendor = PCIID_VENDOR_INTEL, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2476 | .device = 0x24c0, |
| 2477 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2478 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2479 | .sir_io = 0x03f8, |
| 2480 | .fir_io = 0x0130, |
| 2481 | .fir_irq = 0x07, |
| 2482 | .fir_dma = 0x01, |
| 2483 | .cfg_base = 0x002e, |
| 2484 | .preconfigure = preconfigure_through_82801, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2485 | .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2486 | }, |
| 2487 | { |
| 2488 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2489 | .device = 0x248c, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2490 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2491 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2492 | .sir_io = 0x03f8, |
| 2493 | .fir_io = 0x0130, |
| 2494 | .fir_irq = 0x03, |
| 2495 | .fir_dma = 0x03, |
| 2496 | .cfg_base = 0x002e, |
| 2497 | .preconfigure = preconfigure_through_82801, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2498 | .name = "Toshiba laptop with Intel 82801CAM ISA bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2499 | }, |
| 2500 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2501 | /* 82801DBM (ICH4-M) LPC Interface Bridge */ |
| 2502 | .vendor = PCIID_VENDOR_INTEL, |
| 2503 | .device = 0x24cc, |
| 2504 | .subvendor = 0x1179, |
| 2505 | .subdevice = 0xffff, /* 0xffff is "any" */ |
| 2506 | .sir_io = 0x03f8, |
| 2507 | .fir_io = 0x0130, |
| 2508 | .fir_irq = 0x03, |
| 2509 | .fir_dma = 0x03, |
| 2510 | .cfg_base = 0x002e, |
| 2511 | .preconfigure = preconfigure_through_82801, |
| 2512 | .name = "Toshiba laptop with Intel 8281DBM LPC bridge", |
| 2513 | }, |
| 2514 | { |
| 2515 | /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */ |
| 2516 | .vendor = PCIID_VENDOR_ALI, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2517 | .device = 0x1533, |
| 2518 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2519 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2520 | .sir_io = 0x02e8, |
| 2521 | .fir_io = 0x02f8, |
| 2522 | .fir_irq = 0x07, |
| 2523 | .fir_dma = 0x03, |
| 2524 | .cfg_base = 0x002e, |
| 2525 | .preconfigure = preconfigure_through_ali, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2526 | .name = "Toshiba laptop with ALi ISA bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2527 | }, |
| 2528 | { } // Terminator |
| 2529 | }; |
| 2530 | |
| 2531 | |
| 2532 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2533 | * This sets up the basic SMSC parameters |
| 2534 | * (FIR port, SIR port, FIR DMA, FIR IRQ) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2535 | * through the chip configuration port. |
| 2536 | */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2537 | static int __init preconfigure_smsc_chip(struct |
| 2538 | smsc_ircc_subsystem_configuration |
| 2539 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2540 | { |
| 2541 | unsigned short iobase = conf->cfg_base; |
| 2542 | unsigned char tmpbyte; |
| 2543 | |
| 2544 | outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state |
| 2545 | outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID |
| 2546 | tmpbyte = inb(iobase +1); // Read device ID |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2547 | IRDA_DEBUG(0, |
| 2548 | "Detected Chip id: 0x%02x, setting up registers...\n", |
| 2549 | tmpbyte); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2550 | |
| 2551 | /* Disable UART1 and set up SIR I/O port */ |
| 2552 | outb(0x24, iobase); // select CR24 - UART1 base addr |
| 2553 | outb(0x00, iobase + 1); // disable UART1 |
| 2554 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase); // select CR25 - UART2 base addr |
| 2555 | outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8 |
| 2556 | tmpbyte = inb(iobase + 1); |
| 2557 | if (tmpbyte != (conf->sir_io >> 2) ) { |
| 2558 | IRDA_WARNING("ERROR: could not configure SIR ioport.\n"); |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2559 | IRDA_WARNING("Try to supply ircc_cfg argument.\n"); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2560 | return -ENXIO; |
| 2561 | } |
| 2562 | |
| 2563 | /* Set up FIR IRQ channel for UART2 */ |
| 2564 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select |
| 2565 | tmpbyte = inb(iobase + 1); |
| 2566 | tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion |
| 2567 | tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK); |
| 2568 | outb(tmpbyte, iobase + 1); |
| 2569 | tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
| 2570 | if (tmpbyte != conf->fir_irq) { |
| 2571 | IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n"); |
| 2572 | return -ENXIO; |
| 2573 | } |
| 2574 | |
| 2575 | /* Set up FIR I/O port */ |
| 2576 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase); // CR2B - SCE (FIR) base addr |
| 2577 | outb((conf->fir_io >> 3), iobase + 1); |
| 2578 | tmpbyte = inb(iobase + 1); |
| 2579 | if (tmpbyte != (conf->fir_io >> 3) ) { |
| 2580 | IRDA_WARNING("ERROR: could not configure FIR I/O port.\n"); |
| 2581 | return -ENXIO; |
| 2582 | } |
| 2583 | |
| 2584 | /* Set up FIR DMA channel */ |
| 2585 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase); // CR2C - SCE (FIR) DMA select |
| 2586 | outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA |
| 2587 | tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK; |
| 2588 | if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) { |
| 2589 | IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n"); |
| 2590 | return -ENXIO; |
| 2591 | } |
| 2592 | |
| 2593 | outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase); // CR0C - UART mode |
| 2594 | tmpbyte = inb(iobase + 1); |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2595 | tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK | |
| 2596 | SMSCSIOFLAT_UART2MODE_VAL_IRDA; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2597 | outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed |
| 2598 | |
| 2599 | outb(LPC47N227_APMBOOTDRIVE_REG, iobase); // CR07 - Auto Pwr Mgt/boot drive sel |
| 2600 | tmpbyte = inb(iobase + 1); |
| 2601 | outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down |
| 2602 | |
| 2603 | /* This one was not part of tosh1800 */ |
| 2604 | outb(0x0a, iobase); // CR0a - ecp fifo / ir mux |
| 2605 | tmpbyte = inb(iobase + 1); |
| 2606 | outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port |
| 2607 | |
| 2608 | outb(LPC47N227_UART12POWER_REG, iobase); // CR02 - UART 1,2 power |
| 2609 | tmpbyte = inb(iobase + 1); |
| 2610 | outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down |
| 2611 | |
| 2612 | outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase); // CR00 - FDC Power/valid config cycle |
| 2613 | tmpbyte = inb(iobase + 1); |
| 2614 | outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done |
| 2615 | |
| 2616 | outb(LPC47N227_CFGEXITKEY, iobase); // Exit configuration |
| 2617 | |
| 2618 | return 0; |
| 2619 | } |
| 2620 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2621 | /* 82801CAM generic registers */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2622 | #define VID 0x00 |
| 2623 | #define DID 0x02 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2624 | #define PIRQ_A_D_ROUT 0x60 |
| 2625 | #define SIRQ_CNTL 0x64 |
| 2626 | #define PIRQ_E_H_ROUT 0x68 |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2627 | #define PCI_DMA_C 0x90 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2628 | /* LPC-specific registers */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2629 | #define COM_DEC 0xe0 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2630 | #define GEN1_DEC 0xe4 |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2631 | #define LPC_EN 0xe6 |
| 2632 | #define GEN2_DEC 0xec |
| 2633 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2634 | * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge |
| 2635 | * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge. |
| 2636 | * They all work the same way! |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2637 | */ |
| 2638 | static int __init preconfigure_through_82801(struct pci_dev *dev, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2639 | struct |
| 2640 | smsc_ircc_subsystem_configuration |
| 2641 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2642 | { |
| 2643 | unsigned short tmpword; |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2644 | unsigned char tmpbyte; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2645 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2646 | IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n"); |
| 2647 | /* |
| 2648 | * Select the range for the COMA COM port (SIR) |
| 2649 | * Register COM_DEC: |
| 2650 | * Bit 7: reserved |
| 2651 | * Bit 6-4, COMB decode range |
| 2652 | * Bit 3: reserved |
| 2653 | * Bit 2-0, COMA decode range |
| 2654 | * |
| 2655 | * Decode ranges: |
| 2656 | * 000 = 0x3f8-0x3ff (COM1) |
| 2657 | * 001 = 0x2f8-0x2ff (COM2) |
| 2658 | * 010 = 0x220-0x227 |
| 2659 | * 011 = 0x228-0x22f |
| 2660 | * 100 = 0x238-0x23f |
| 2661 | * 101 = 0x2e8-0x2ef (COM4) |
| 2662 | * 110 = 0x338-0x33f |
| 2663 | * 111 = 0x3e8-0x3ef (COM3) |
| 2664 | */ |
| 2665 | pci_read_config_byte(dev, COM_DEC, &tmpbyte); |
| 2666 | tmpbyte &= 0xf8; /* mask COMA bits */ |
| 2667 | switch(conf->sir_io) { |
| 2668 | case 0x3f8: |
| 2669 | tmpbyte |= 0x00; |
| 2670 | break; |
| 2671 | case 0x2f8: |
| 2672 | tmpbyte |= 0x01; |
| 2673 | break; |
| 2674 | case 0x220: |
| 2675 | tmpbyte |= 0x02; |
| 2676 | break; |
| 2677 | case 0x228: |
| 2678 | tmpbyte |= 0x03; |
| 2679 | break; |
| 2680 | case 0x238: |
| 2681 | tmpbyte |= 0x04; |
| 2682 | break; |
| 2683 | case 0x2e8: |
| 2684 | tmpbyte |= 0x05; |
| 2685 | break; |
| 2686 | case 0x338: |
| 2687 | tmpbyte |= 0x06; |
| 2688 | break; |
| 2689 | case 0x3e8: |
| 2690 | tmpbyte |= 0x07; |
| 2691 | break; |
| 2692 | default: |
| 2693 | tmpbyte |= 0x01; /* COM2 default */ |
| 2694 | } |
| 2695 | IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte); |
| 2696 | pci_write_config_byte(dev, COM_DEC, tmpbyte); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2697 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2698 | /* Enable Low Pin Count interface */ |
| 2699 | pci_read_config_word(dev, LPC_EN, &tmpword); |
| 2700 | /* These seem to be set up at all times, |
| 2701 | * just make sure it is properly set. |
| 2702 | */ |
| 2703 | switch(conf->cfg_base) { |
| 2704 | case 0x04e: |
| 2705 | tmpword |= 0x2000; |
| 2706 | break; |
| 2707 | case 0x02e: |
| 2708 | tmpword |= 0x1000; |
| 2709 | break; |
| 2710 | case 0x062: |
| 2711 | tmpword |= 0x0800; |
| 2712 | break; |
| 2713 | case 0x060: |
| 2714 | tmpword |= 0x0400; |
| 2715 | break; |
| 2716 | default: |
| 2717 | IRDA_WARNING("Uncommon I/O base address: 0x%04x\n", |
| 2718 | conf->cfg_base); |
| 2719 | break; |
| 2720 | } |
| 2721 | tmpword &= 0xfffd; /* disable LPC COMB */ |
| 2722 | tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */ |
| 2723 | IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2724 | pci_write_config_word(dev, LPC_EN, tmpword); |
| 2725 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2726 | /* |
| 2727 | * Configure LPC DMA channel |
| 2728 | * PCI_DMA_C bits: |
| 2729 | * Bit 15-14: DMA channel 7 select |
| 2730 | * Bit 13-12: DMA channel 6 select |
| 2731 | * Bit 11-10: DMA channel 5 select |
| 2732 | * Bit 9-8: Reserved |
| 2733 | * Bit 7-6: DMA channel 3 select |
| 2734 | * Bit 5-4: DMA channel 2 select |
| 2735 | * Bit 3-2: DMA channel 1 select |
| 2736 | * Bit 1-0: DMA channel 0 select |
| 2737 | * 00 = Reserved value |
| 2738 | * 01 = PC/PCI DMA |
| 2739 | * 10 = Reserved value |
| 2740 | * 11 = LPC I/F DMA |
| 2741 | */ |
| 2742 | pci_read_config_word(dev, PCI_DMA_C, &tmpword); |
| 2743 | switch(conf->fir_dma) { |
| 2744 | case 0x07: |
| 2745 | tmpword |= 0xc000; |
| 2746 | break; |
| 2747 | case 0x06: |
| 2748 | tmpword |= 0x3000; |
| 2749 | break; |
| 2750 | case 0x05: |
| 2751 | tmpword |= 0x0c00; |
| 2752 | break; |
| 2753 | case 0x03: |
| 2754 | tmpword |= 0x00c0; |
| 2755 | break; |
| 2756 | case 0x02: |
| 2757 | tmpword |= 0x0030; |
| 2758 | break; |
| 2759 | case 0x01: |
| 2760 | tmpword |= 0x000c; |
| 2761 | break; |
| 2762 | case 0x00: |
| 2763 | tmpword |= 0x0003; |
| 2764 | break; |
| 2765 | default: |
| 2766 | break; /* do not change settings */ |
| 2767 | } |
| 2768 | IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword); |
| 2769 | pci_write_config_word(dev, PCI_DMA_C, tmpword); |
| 2770 | |
| 2771 | /* |
| 2772 | * GEN2_DEC bits: |
| 2773 | * Bit 15-4: Generic I/O range |
| 2774 | * Bit 3-1: reserved (read as 0) |
| 2775 | * Bit 0: enable GEN2 range on LPC I/F |
| 2776 | */ |
| 2777 | tmpword = conf->fir_io & 0xfff8; |
| 2778 | tmpword |= 0x0001; |
| 2779 | IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword); |
| 2780 | pci_write_config_word(dev, GEN2_DEC, tmpword); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2781 | |
| 2782 | /* Pre-configure chip */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2783 | return preconfigure_smsc_chip(conf); |
| 2784 | } |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2785 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2786 | /* |
| 2787 | * Pre-configure a certain port on the ALi 1533 bridge. |
| 2788 | * This is based on reverse-engineering since ALi does not |
| 2789 | * provide any data sheet for the 1533 chip. |
| 2790 | */ |
| 2791 | static void __init preconfigure_ali_port(struct pci_dev *dev, |
| 2792 | unsigned short port) |
| 2793 | { |
| 2794 | unsigned char reg; |
| 2795 | /* These bits obviously control the different ports */ |
| 2796 | unsigned char mask; |
| 2797 | unsigned char tmpbyte; |
| 2798 | |
| 2799 | switch(port) { |
| 2800 | case 0x0130: |
| 2801 | case 0x0178: |
| 2802 | reg = 0xb0; |
| 2803 | mask = 0x80; |
| 2804 | break; |
| 2805 | case 0x03f8: |
| 2806 | reg = 0xb4; |
| 2807 | mask = 0x80; |
| 2808 | break; |
| 2809 | case 0x02f8: |
| 2810 | reg = 0xb4; |
| 2811 | mask = 0x30; |
| 2812 | break; |
| 2813 | case 0x02e8: |
| 2814 | reg = 0xb4; |
| 2815 | mask = 0x08; |
| 2816 | break; |
| 2817 | default: |
| 2818 | IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port); |
| 2819 | return; |
| 2820 | } |
| 2821 | |
| 2822 | pci_read_config_byte(dev, reg, &tmpbyte); |
| 2823 | /* Turn on the right bits */ |
| 2824 | tmpbyte |= mask; |
| 2825 | pci_write_config_byte(dev, reg, tmpbyte); |
| 2826 | IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port); |
| 2827 | return; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2828 | } |
| 2829 | |
| 2830 | static int __init preconfigure_through_ali(struct pci_dev *dev, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2831 | struct |
| 2832 | smsc_ircc_subsystem_configuration |
| 2833 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2834 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2835 | /* Configure the two ports on the ALi 1533 */ |
| 2836 | preconfigure_ali_port(dev, conf->sir_io); |
| 2837 | preconfigure_ali_port(dev, conf->fir_io); |
| 2838 | |
| 2839 | /* Pre-configure chip */ |
| 2840 | return preconfigure_smsc_chip(conf); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2841 | } |
| 2842 | |
| 2843 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 2844 | unsigned short ircc_fir, |
| 2845 | unsigned short ircc_sir, |
| 2846 | unsigned char ircc_dma, |
| 2847 | unsigned char ircc_irq) |
| 2848 | { |
| 2849 | struct pci_dev *dev = NULL; |
| 2850 | unsigned short ss_vendor = 0x0000; |
| 2851 | unsigned short ss_device = 0x0000; |
| 2852 | int ret = 0; |
| 2853 | |
| 2854 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2855 | |
| 2856 | while (dev != NULL) { |
| 2857 | struct smsc_ircc_subsystem_configuration *conf; |
| 2858 | |
| 2859 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2860 | * Cache the subsystem vendor/device: |
| 2861 | * some manufacturers fail to set this for all components, |
| 2862 | * so we save it in case there is just 0x0000 0x0000 on the |
| 2863 | * device we want to check. |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2864 | */ |
| 2865 | if (dev->subsystem_vendor != 0x0000U) { |
| 2866 | ss_vendor = dev->subsystem_vendor; |
| 2867 | ss_device = dev->subsystem_device; |
| 2868 | } |
| 2869 | conf = subsystem_configurations; |
| 2870 | for( ; conf->subvendor; conf++) { |
| 2871 | if(conf->vendor == dev->vendor && |
| 2872 | conf->device == dev->device && |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2873 | conf->subvendor == ss_vendor && |
| 2874 | /* Sometimes these are cached values */ |
| 2875 | (conf->subdevice == ss_device || |
| 2876 | conf->subdevice == 0xffff)) { |
| 2877 | struct smsc_ircc_subsystem_configuration |
| 2878 | tmpconf; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2879 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2880 | memcpy(&tmpconf, conf, |
| 2881 | sizeof(struct smsc_ircc_subsystem_configuration)); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2882 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2883 | /* |
| 2884 | * Override the default values with anything |
| 2885 | * passed in as parameter |
| 2886 | */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2887 | if (ircc_cfg != 0) |
| 2888 | tmpconf.cfg_base = ircc_cfg; |
| 2889 | if (ircc_fir != 0) |
| 2890 | tmpconf.fir_io = ircc_fir; |
| 2891 | if (ircc_sir != 0) |
| 2892 | tmpconf.sir_io = ircc_sir; |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 2893 | if (ircc_dma != DMA_INVAL) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2894 | tmpconf.fir_dma = ircc_dma; |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 2895 | if (ircc_irq != IRQ_INVAL) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2896 | tmpconf.fir_irq = ircc_irq; |
| 2897 | |
| 2898 | IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name); |
| 2899 | if (conf->preconfigure) |
| 2900 | ret = conf->preconfigure(dev, &tmpconf); |
| 2901 | else |
| 2902 | ret = -ENODEV; |
| 2903 | } |
| 2904 | } |
| 2905 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2906 | } |
| 2907 | |
| 2908 | return ret; |
| 2909 | } |
| 2910 | #endif // CONFIG_PCI |
| 2911 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2912 | /************************************************ |
| 2913 | * |
| 2914 | * Transceivers specific functions |
| 2915 | * |
| 2916 | ************************************************/ |
| 2917 | |
| 2918 | |
| 2919 | /* |
| 2920 | * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed) |
| 2921 | * |
| 2922 | * Program transceiver through smsc-ircc ATC circuitry |
| 2923 | * |
| 2924 | */ |
| 2925 | |
| 2926 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed) |
| 2927 | { |
| 2928 | unsigned long jiffies_now, jiffies_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2929 | u8 val; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2930 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2931 | jiffies_now = jiffies; |
| 2932 | jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2933 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2934 | /* ATC */ |
| 2935 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2936 | outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE, |
| 2937 | fir_base + IRCC_ATC); |
| 2938 | |
| 2939 | while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) && |
| 2940 | !time_after(jiffies, jiffies_timeout)) |
| 2941 | /* empty */; |
| 2942 | |
| 2943 | if (val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2944 | IRDA_WARNING("%s(): ATC: 0x%02x\n", __FUNCTION__, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2945 | inb(fir_base + IRCC_ATC)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | } |
| 2947 | |
| 2948 | /* |
| 2949 | * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base) |
| 2950 | * |
| 2951 | * Probe transceiver smsc-ircc ATC circuitry |
| 2952 | * |
| 2953 | */ |
| 2954 | |
| 2955 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base) |
| 2956 | { |
| 2957 | return 0; |
| 2958 | } |
| 2959 | |
| 2960 | /* |
| 2961 | * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed) |
| 2962 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2963 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | * |
| 2965 | */ |
| 2966 | |
| 2967 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed) |
| 2968 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2969 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2970 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2971 | switch (speed) { |
| 2972 | default: |
| 2973 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2974 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2975 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2976 | case 1152000 : |
| 2977 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | fast_mode = IRCC_LCR_A_FAST; |
| 2979 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2980 | } |
| 2981 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2982 | 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] | 2983 | } |
| 2984 | |
| 2985 | /* |
| 2986 | * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base) |
| 2987 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2988 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2989 | * |
| 2990 | */ |
| 2991 | |
| 2992 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base) |
| 2993 | { |
| 2994 | return 0; |
| 2995 | } |
| 2996 | |
| 2997 | /* |
| 2998 | * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed) |
| 2999 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3000 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | * |
| 3002 | */ |
| 3003 | |
| 3004 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed) |
| 3005 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 3006 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3007 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 3008 | switch (speed) { |
| 3009 | default: |
| 3010 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3011 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3012 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 3013 | case 1152000 : |
| 3014 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3015 | fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA; |
| 3016 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3017 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3018 | } |
| 3019 | /* This causes an interrupt */ |
| 3020 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 3021 | 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] | 3022 | } |
| 3023 | |
| 3024 | /* |
| 3025 | * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base) |
| 3026 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3027 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3028 | * |
| 3029 | */ |
| 3030 | |
| 3031 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base) |
| 3032 | { |
| 3033 | return 0; |
| 3034 | } |
| 3035 | |
| 3036 | |
| 3037 | module_init(smsc_ircc_init); |
| 3038 | module_exit(smsc_ircc_cleanup); |