Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /********************************************************************* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
| 3 | * Description: Driver for the SMC Infrared Communications Controller |
| 4 | * Status: Experimental. |
| 5 | * Author: Daniele Peri (peri@csai.unipa.it) |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 6 | * Created at: |
| 7 | * Modified at: |
| 8 | * Modified by: |
| 9 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * Copyright (c) 2002 Daniele Peri |
| 11 | * All Rights Reserved. |
| 12 | * Copyright (c) 2002 Jean Tourrilhes |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 13 | * Copyright (c) 2006 Linus Walleij |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | * |
| 15 | * |
| 16 | * Based on smc-ircc.c: |
| 17 | * |
| 18 | * Copyright (c) 2001 Stefani Seibold |
| 19 | * Copyright (c) 1999-2001 Dag Brattli |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 20 | * Copyright (c) 1998-1999 Thomas Davis, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | * |
| 22 | * and irport.c: |
| 23 | * |
| 24 | * Copyright (c) 1997, 1998, 1999-2000 Dag Brattli, All Rights Reserved. |
| 25 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 26 | * |
| 27 | * This program is free software; you can redistribute it and/or |
| 28 | * modify it under the terms of the GNU General Public License as |
| 29 | * published by the Free Software Foundation; either version 2 of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | * the License, or (at your option) any later version. |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 31 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | * This program is distributed in the hope that it will be useful, |
| 33 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 34 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 35 | * GNU General Public License for more details. |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 36 | * |
| 37 | * You should have received a copy of the GNU General Public License |
| 38 | * along with this program; if not, write to the Free Software |
| 39 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | * MA 02111-1307 USA |
| 41 | * |
| 42 | ********************************************************************/ |
| 43 | |
| 44 | #include <linux/module.h> |
| 45 | #include <linux/kernel.h> |
| 46 | #include <linux/types.h> |
| 47 | #include <linux/skbuff.h> |
| 48 | #include <linux/netdevice.h> |
| 49 | #include <linux/ioport.h> |
| 50 | #include <linux/delay.h> |
| 51 | #include <linux/slab.h> |
| 52 | #include <linux/init.h> |
| 53 | #include <linux/rtnetlink.h> |
| 54 | #include <linux/serial_reg.h> |
| 55 | #include <linux/dma-mapping.h> |
David Brownell | d94c77b | 2006-05-09 15:26:11 -0700 | [diff] [blame] | 56 | #include <linux/pnp.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 57 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | #include <asm/io.h> |
| 60 | #include <asm/dma.h> |
| 61 | #include <asm/byteorder.h> |
| 62 | |
| 63 | #include <linux/spinlock.h> |
| 64 | #include <linux/pm.h> |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 65 | #ifdef CONFIG_PCI |
| 66 | #include <linux/pci.h> |
| 67 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | #include <net/irda/wrapper.h> |
| 70 | #include <net/irda/irda.h> |
| 71 | #include <net/irda/irda_device.h> |
| 72 | |
| 73 | #include "smsc-ircc2.h" |
| 74 | #include "smsc-sio.h" |
| 75 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 76 | |
| 77 | MODULE_AUTHOR("Daniele Peri <peri@csai.unipa.it>"); |
| 78 | MODULE_DESCRIPTION("SMC IrCC SIR/FIR controller driver"); |
| 79 | MODULE_LICENSE("GPL"); |
| 80 | |
Bjorn Helgaas | cbcdd77 | 2007-07-01 12:06:49 -0700 | [diff] [blame] | 81 | static int smsc_nopnp = 1; |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame] | 82 | module_param_named(nopnp, smsc_nopnp, bool, 0); |
Jonathan Bastien-Filiatrault | 32db927 | 2007-09-26 22:34:25 -0700 | [diff] [blame] | 83 | MODULE_PARM_DESC(nopnp, "Do not use PNP to detect controller settings, defaults to true"); |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame] | 84 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 85 | #define DMA_INVAL 255 |
| 86 | static int ircc_dma = DMA_INVAL; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 87 | module_param(ircc_dma, int, 0); |
| 88 | MODULE_PARM_DESC(ircc_dma, "DMA channel"); |
| 89 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 90 | #define IRQ_INVAL 255 |
| 91 | static int ircc_irq = IRQ_INVAL; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 92 | module_param(ircc_irq, int, 0); |
| 93 | MODULE_PARM_DESC(ircc_irq, "IRQ line"); |
| 94 | |
| 95 | static int ircc_fir; |
| 96 | module_param(ircc_fir, int, 0); |
| 97 | MODULE_PARM_DESC(ircc_fir, "FIR Base Address"); |
| 98 | |
| 99 | static int ircc_sir; |
| 100 | module_param(ircc_sir, int, 0); |
| 101 | MODULE_PARM_DESC(ircc_sir, "SIR Base Address"); |
| 102 | |
| 103 | static int ircc_cfg; |
| 104 | module_param(ircc_cfg, int, 0); |
| 105 | MODULE_PARM_DESC(ircc_cfg, "Configuration register base address"); |
| 106 | |
| 107 | static int ircc_transceiver; |
| 108 | module_param(ircc_transceiver, int, 0); |
| 109 | MODULE_PARM_DESC(ircc_transceiver, "Transceiver type"); |
| 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | /* Types */ |
| 112 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 113 | #ifdef CONFIG_PCI |
| 114 | struct smsc_ircc_subsystem_configuration { |
| 115 | unsigned short vendor; /* PCI vendor ID */ |
| 116 | unsigned short device; /* PCI vendor ID */ |
| 117 | unsigned short subvendor; /* PCI subsystem vendor ID */ |
| 118 | unsigned short subdevice; /* PCI sybsystem device ID */ |
| 119 | unsigned short sir_io; /* I/O port for SIR */ |
| 120 | unsigned short fir_io; /* I/O port for FIR */ |
| 121 | unsigned char fir_irq; /* FIR IRQ */ |
| 122 | unsigned char fir_dma; /* FIR DMA */ |
| 123 | unsigned short cfg_base; /* I/O port for chip configuration */ |
| 124 | int (*preconfigure)(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); /* Preconfig function */ |
| 125 | const char *name; /* name shown as info */ |
| 126 | }; |
| 127 | #endif |
| 128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | struct smsc_transceiver { |
| 130 | char *name; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 131 | void (*set_for_speed)(int fir_base, u32 speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | int (*probe)(int fir_base); |
| 133 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
| 135 | struct smsc_chip { |
| 136 | char *name; |
| 137 | #if 0 |
| 138 | u8 type; |
| 139 | #endif |
| 140 | u16 flags; |
| 141 | u8 devid; |
| 142 | u8 rev; |
| 143 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
| 145 | struct smsc_chip_address { |
| 146 | unsigned int cfg_base; |
| 147 | unsigned int type; |
| 148 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
| 150 | /* Private data for each instance */ |
| 151 | struct smsc_ircc_cb { |
| 152 | struct net_device *netdev; /* Yes! we are some kind of netdevice */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | struct irlap_cb *irlap; /* The link layer we are binded to */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | chipio_t io; /* IrDA controller information */ |
| 156 | iobuff_t tx_buff; /* Transmit buffer */ |
| 157 | iobuff_t rx_buff; /* Receive buffer */ |
| 158 | dma_addr_t tx_buff_dma; |
| 159 | dma_addr_t rx_buff_dma; |
| 160 | |
| 161 | struct qos_info qos; /* QoS capabilities for this device */ |
| 162 | |
| 163 | spinlock_t lock; /* For serializing operations */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | __u32 new_speed; |
| 166 | __u32 flags; /* Interface flags */ |
| 167 | |
| 168 | int tx_buff_offsets[10]; /* Offsets between frames in tx_buff */ |
| 169 | int tx_len; /* Number of frames in tx_buff */ |
| 170 | |
| 171 | int transceiver; |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 172 | struct platform_device *pldev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | }; |
| 174 | |
| 175 | /* Constants */ |
| 176 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 177 | #define SMSC_IRCC2_DRIVER_NAME "smsc-ircc2" |
| 178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | #define SMSC_IRCC2_C_IRDA_FALLBACK_SPEED 9600 |
| 180 | #define SMSC_IRCC2_C_DEFAULT_TRANSCEIVER 1 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 181 | #define SMSC_IRCC2_C_NET_TIMEOUT 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | #define SMSC_IRCC2_C_SIR_STOP 0 |
| 183 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 184 | static const char *driver_name = SMSC_IRCC2_DRIVER_NAME; |
| 185 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | /* Prototypes */ |
| 187 | |
| 188 | static int smsc_ircc_open(unsigned int firbase, unsigned int sirbase, u8 dma, u8 irq); |
| 189 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base); |
| 190 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq); |
| 191 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self); |
| 192 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self); |
| 193 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 194 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self); |
| 195 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self); |
| 197 | static int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev); |
| 198 | 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] | 199 | static void smsc_ircc_dma_xmit(struct smsc_ircc_cb *self, int bofs); |
| 200 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self); |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 201 | static void smsc_ircc_change_speed(struct smsc_ircc_cb *self, u32 speed); |
| 202 | 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] | 203 | static irqreturn_t smsc_ircc_interrupt(int irq, void *dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev); |
| 205 | static void smsc_ircc_sir_start(struct smsc_ircc_cb *self); |
| 206 | #if SMSC_IRCC2_C_SIR_STOP |
| 207 | static void smsc_ircc_sir_stop(struct smsc_ircc_cb *self); |
| 208 | #endif |
| 209 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self); |
| 210 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len); |
| 211 | static int smsc_ircc_net_open(struct net_device *dev); |
| 212 | static int smsc_ircc_net_close(struct net_device *dev); |
| 213 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 214 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 215 | static void smsc_ircc_timeout(struct net_device *dev); |
| 216 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self); |
| 218 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self); |
| 219 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed); |
| 220 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self); |
| 221 | |
| 222 | /* Probing */ |
| 223 | static int __init smsc_ircc_look_for_chips(void); |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 224 | static const struct smsc_chip * __init smsc_ircc_probe(unsigned short cfg_base, u8 reg, const struct smsc_chip *chip, char *type); |
| 225 | static int __init smsc_superio_flat(const struct smsc_chip *chips, unsigned short cfg_base, char *type); |
| 226 | 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] | 227 | static int __init smsc_superio_fdc(unsigned short cfg_base); |
| 228 | static int __init smsc_superio_lpc(unsigned short cfg_base); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 229 | #ifdef CONFIG_PCI |
| 230 | static int __init preconfigure_smsc_chip(struct smsc_ircc_subsystem_configuration *conf); |
| 231 | 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] | 232 | static void __init preconfigure_ali_port(struct pci_dev *dev, |
| 233 | unsigned short port); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 234 | static int __init preconfigure_through_ali(struct pci_dev *dev, struct smsc_ircc_subsystem_configuration *conf); |
| 235 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 236 | unsigned short ircc_fir, |
| 237 | unsigned short ircc_sir, |
| 238 | unsigned char ircc_dma, |
| 239 | unsigned char ircc_irq); |
| 240 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | |
| 242 | /* Transceivers specific functions */ |
| 243 | |
| 244 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed); |
| 245 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base); |
| 246 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed); |
| 247 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base); |
| 248 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed); |
| 249 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base); |
| 250 | |
| 251 | /* Power Management */ |
| 252 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 253 | static int smsc_ircc_suspend(struct platform_device *dev, pm_message_t state); |
| 254 | static int smsc_ircc_resume(struct platform_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 256 | static struct platform_driver smsc_ircc_driver = { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 257 | .suspend = smsc_ircc_suspend, |
| 258 | .resume = smsc_ircc_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 259 | .driver = { |
| 260 | .name = SMSC_IRCC2_DRIVER_NAME, |
| 261 | }, |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 262 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
| 264 | /* Transceivers for SMSC-ircc */ |
| 265 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 266 | static struct smsc_transceiver smsc_transceivers[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 268 | { "Toshiba Satellite 1800 (GP data pin select)", smsc_ircc_set_transceiver_toshiba_sat1800, smsc_ircc_probe_transceiver_toshiba_sat1800 }, |
| 269 | { "Fast pin select", smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select, smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select }, |
| 270 | { "ATC IRMode", smsc_ircc_set_transceiver_smsc_ircc_atc, smsc_ircc_probe_transceiver_smsc_ircc_atc }, |
| 271 | { NULL, NULL } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | }; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 273 | #define SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS (ARRAY_SIZE(smsc_transceivers) - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
| 275 | /* SMC SuperIO chipsets definitions */ |
| 276 | |
| 277 | #define KEY55_1 0 /* SuperIO Configuration mode with Key <0x55> */ |
| 278 | #define KEY55_2 1 /* SuperIO Configuration mode with Key <0x55,0x55> */ |
| 279 | #define NoIRDA 2 /* SuperIO Chip has no IRDA Port */ |
| 280 | #define SIR 0 /* SuperIO Chip has only slow IRDA */ |
| 281 | #define FIR 4 /* SuperIO Chip has fast IRDA */ |
| 282 | #define SERx4 8 /* SuperIO Chip supports 115,2 KBaud * 4=460,8 KBaud */ |
| 283 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 284 | static struct smsc_chip __initdata fdc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | { |
| 286 | /* Base address 0x3f0 or 0x370 */ |
| 287 | { "37C44", KEY55_1|NoIRDA, 0x00, 0x00 }, /* This chip cannot be detected */ |
| 288 | { "37C665GT", KEY55_2|NoIRDA, 0x65, 0x01 }, |
| 289 | { "37C665GT", KEY55_2|NoIRDA, 0x66, 0x01 }, |
| 290 | { "37C669", KEY55_2|SIR|SERx4, 0x03, 0x02 }, |
| 291 | { "37C669", KEY55_2|SIR|SERx4, 0x04, 0x02 }, /* ID? */ |
| 292 | { "37C78", KEY55_2|NoIRDA, 0x78, 0x00 }, |
| 293 | { "37N769", KEY55_1|FIR|SERx4, 0x28, 0x00 }, |
| 294 | { "37N869", KEY55_1|FIR|SERx4, 0x29, 0x00 }, |
| 295 | { NULL } |
| 296 | }; |
| 297 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 298 | static struct smsc_chip __initdata fdc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | { |
| 300 | /* Base address 0x3f0 or 0x370 */ |
| 301 | { "37B72X", KEY55_1|SIR|SERx4, 0x4c, 0x00 }, |
| 302 | { "37B77X", KEY55_1|SIR|SERx4, 0x43, 0x00 }, |
| 303 | { "37B78X", KEY55_1|SIR|SERx4, 0x44, 0x00 }, |
| 304 | { "37B80X", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 305 | { "37C67X", KEY55_1|FIR|SERx4, 0x40, 0x00 }, |
| 306 | { "37C93X", KEY55_2|SIR|SERx4, 0x02, 0x01 }, |
| 307 | { "37C93XAPM", KEY55_1|SIR|SERx4, 0x30, 0x01 }, |
| 308 | { "37C93XFR", KEY55_2|FIR|SERx4, 0x03, 0x01 }, |
| 309 | { "37M707", KEY55_1|SIR|SERx4, 0x42, 0x00 }, |
| 310 | { "37M81X", KEY55_1|SIR|SERx4, 0x4d, 0x00 }, |
| 311 | { "37N958FR", KEY55_1|FIR|SERx4, 0x09, 0x04 }, |
| 312 | { "37N971", KEY55_1|FIR|SERx4, 0x0a, 0x00 }, |
| 313 | { "37N972", KEY55_1|FIR|SERx4, 0x0b, 0x00 }, |
| 314 | { NULL } |
| 315 | }; |
| 316 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 317 | static struct smsc_chip __initdata lpc_chips_flat[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | { |
| 319 | /* Base address 0x2E or 0x4E */ |
| 320 | { "47N227", KEY55_1|FIR|SERx4, 0x5a, 0x00 }, |
Peter Kovar | afdf27c | 2007-03-16 20:39:25 -0700 | [diff] [blame] | 321 | { "47N227", KEY55_1|FIR|SERx4, 0x7a, 0x00 }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { "47N267", KEY55_1|FIR|SERx4, 0x5e, 0x00 }, |
| 323 | { NULL } |
| 324 | }; |
| 325 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 326 | static struct smsc_chip __initdata lpc_chips_paged[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | { |
| 328 | /* Base address 0x2E or 0x4E */ |
| 329 | { "47B27X", KEY55_1|SIR|SERx4, 0x51, 0x00 }, |
| 330 | { "47B37X", KEY55_1|SIR|SERx4, 0x52, 0x00 }, |
| 331 | { "47M10X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 332 | { "47M120", KEY55_1|NoIRDA|SERx4, 0x5c, 0x00 }, |
| 333 | { "47M13X", KEY55_1|SIR|SERx4, 0x59, 0x00 }, |
| 334 | { "47M14X", KEY55_1|SIR|SERx4, 0x5f, 0x00 }, |
| 335 | { "47N252", KEY55_1|FIR|SERx4, 0x0e, 0x00 }, |
| 336 | { "47S42X", KEY55_1|SIR|SERx4, 0x57, 0x00 }, |
| 337 | { NULL } |
| 338 | }; |
| 339 | |
| 340 | #define SMSCSIO_TYPE_FDC 1 |
| 341 | #define SMSCSIO_TYPE_LPC 2 |
| 342 | #define SMSCSIO_TYPE_FLAT 4 |
| 343 | #define SMSCSIO_TYPE_PAGED 8 |
| 344 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 345 | static struct smsc_chip_address __initdata possible_addresses[] = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 347 | { 0x3f0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 348 | { 0x370, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 349 | { 0xe0, SMSCSIO_TYPE_FDC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 350 | { 0x2e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 351 | { 0x4e, SMSCSIO_TYPE_LPC|SMSCSIO_TYPE_FLAT|SMSCSIO_TYPE_PAGED }, |
| 352 | { 0, 0 } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | }; |
| 354 | |
| 355 | /* Globals */ |
| 356 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 357 | static struct smsc_ircc_cb *dev_self[] = { NULL, NULL }; |
| 358 | static unsigned short dev_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
| 360 | static inline void register_bank(int iobase, int bank) |
| 361 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 362 | outb(((inb(iobase + IRCC_MASTER) & 0xf0) | (bank & 0x07)), |
| 363 | iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
| 365 | |
David Brownell | d94c77b | 2006-05-09 15:26:11 -0700 | [diff] [blame] | 366 | /* PNP hotplug support */ |
| 367 | static const struct pnp_device_id smsc_ircc_pnp_table[] = { |
| 368 | { .id = "SMCf010", .driver_data = 0 }, |
| 369 | /* and presumably others */ |
| 370 | { } |
| 371 | }; |
| 372 | MODULE_DEVICE_TABLE(pnp, smsc_ircc_pnp_table); |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame] | 373 | |
| 374 | static int pnp_driver_registered; |
| 375 | |
Ingo Molnar | 7a1aa30 | 2008-05-05 01:06:54 -0700 | [diff] [blame] | 376 | #ifdef CONFIG_PNP |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame] | 377 | static int __init smsc_ircc_pnp_probe(struct pnp_dev *dev, |
| 378 | const struct pnp_device_id *dev_id) |
| 379 | { |
| 380 | unsigned int firbase, sirbase; |
| 381 | u8 dma, irq; |
| 382 | |
| 383 | if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && |
| 384 | pnp_dma_valid(dev, 0) && pnp_irq_valid(dev, 0))) |
| 385 | return -EINVAL; |
| 386 | |
| 387 | sirbase = pnp_port_start(dev, 0); |
| 388 | firbase = pnp_port_start(dev, 1); |
| 389 | dma = pnp_dma(dev, 0); |
| 390 | irq = pnp_irq(dev, 0); |
| 391 | |
| 392 | if (smsc_ircc_open(firbase, sirbase, dma, irq)) |
| 393 | return -ENODEV; |
| 394 | |
| 395 | return 0; |
| 396 | } |
| 397 | |
| 398 | static struct pnp_driver smsc_ircc_pnp_driver = { |
| 399 | .name = "smsc-ircc2", |
| 400 | .id_table = smsc_ircc_pnp_table, |
| 401 | .probe = smsc_ircc_pnp_probe, |
| 402 | }; |
Ingo Molnar | 7a1aa30 | 2008-05-05 01:06:54 -0700 | [diff] [blame] | 403 | #else /* CONFIG_PNP */ |
| 404 | static struct pnp_driver smsc_ircc_pnp_driver; |
| 405 | #endif |
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 | |
Bjorn Helgaas | 7c31d2f | 2007-06-27 14:09:50 -0700 | [diff] [blame] | 419 | #ifdef CONFIG_PCI |
| 420 | if (smsc_ircc_preconfigure_subsystems(ircc_cfg, ircc_fir, ircc_sir, ircc_dma, ircc_irq) < 0) { |
| 421 | /* Ignore errors from preconfiguration */ |
| 422 | IRDA_ERROR("%s, Preconfiguration failed !\n", driver_name); |
| 423 | } |
| 424 | #endif |
| 425 | |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame] | 426 | if (ircc_fir > 0 && ircc_sir > 0) { |
| 427 | IRDA_MESSAGE(" Overriding FIR address 0x%04x\n", ircc_fir); |
| 428 | IRDA_MESSAGE(" Overriding SIR address 0x%04x\n", ircc_sir); |
| 429 | |
| 430 | if (smsc_ircc_open(ircc_fir, ircc_sir, ircc_dma, ircc_irq)) |
| 431 | ret = -ENODEV; |
| 432 | } else { |
| 433 | ret = -ENODEV; |
| 434 | |
| 435 | /* try user provided configuration register base address */ |
| 436 | if (ircc_cfg > 0) { |
| 437 | IRDA_MESSAGE(" Overriding configuration address " |
| 438 | "0x%04x\n", ircc_cfg); |
| 439 | if (!smsc_superio_fdc(ircc_cfg)) |
| 440 | ret = 0; |
| 441 | if (!smsc_superio_lpc(ircc_cfg)) |
| 442 | ret = 0; |
| 443 | } |
| 444 | |
| 445 | if (smsc_ircc_look_for_chips() > 0) |
| 446 | ret = 0; |
| 447 | } |
| 448 | return ret; |
| 449 | } |
| 450 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | /* |
| 452 | * Function smsc_ircc_init () |
| 453 | * |
| 454 | * Initialize chip. Just try to find out how many chips we are dealing with |
| 455 | * and where they are |
| 456 | */ |
| 457 | static int __init smsc_ircc_init(void) |
| 458 | { |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 459 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 461 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 463 | ret = platform_driver_register(&smsc_ircc_driver); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 464 | if (ret) { |
| 465 | IRDA_ERROR("%s, Can't register driver!\n", driver_name); |
| 466 | return ret; |
| 467 | } |
| 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 | |
Stephen Hemminger | 02087be | 2009-03-20 19:35:42 +0000 | [diff] [blame^] | 489 | static int smsc_ircc_net_xmit(struct sk_buff *skb, struct net_device *dev) |
| 490 | { |
| 491 | struct smsc_ircc_cb *self = netdev_priv(dev); |
| 492 | |
| 493 | if (self->io.speed > 115200) |
| 494 | return smsc_ircc_hard_xmit_fir(skb, dev); |
| 495 | else |
| 496 | return smsc_ircc_hard_xmit_sir(skb, dev); |
| 497 | } |
| 498 | |
| 499 | static const struct net_device_ops smsc_ircc_netdev_ops = { |
| 500 | .ndo_open = smsc_ircc_net_open, |
| 501 | .ndo_stop = smsc_ircc_net_close, |
| 502 | .ndo_do_ioctl = smsc_ircc_net_ioctl, |
| 503 | .ndo_start_xmit = smsc_ircc_net_xmit, |
| 504 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 505 | .ndo_tx_timeout = smsc_ircc_timeout, |
| 506 | #endif |
| 507 | }; |
| 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | /* |
| 510 | * Function smsc_ircc_open (firbase, sirbase, dma, irq) |
| 511 | * |
| 512 | * Try to open driver instance |
| 513 | * |
| 514 | */ |
| 515 | static int __init smsc_ircc_open(unsigned int fir_base, unsigned int sir_base, u8 dma, u8 irq) |
| 516 | { |
| 517 | struct smsc_ircc_cb *self; |
| 518 | struct net_device *dev; |
| 519 | int err; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 520 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 521 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | |
| 523 | err = smsc_ircc_present(fir_base, sir_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 524 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | goto err_out; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 526 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | err = -ENOMEM; |
Dmitry Torokhov | a956f4c | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 528 | if (dev_count >= ARRAY_SIZE(dev_self)) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 529 | IRDA_WARNING("%s(), too many devices!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | goto err_out1; |
| 531 | } |
| 532 | |
| 533 | /* |
| 534 | * Allocate new instance of the driver |
| 535 | */ |
| 536 | dev = alloc_irdadev(sizeof(struct smsc_ircc_cb)); |
| 537 | if (!dev) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 538 | IRDA_WARNING("%s() can't allocate net device\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | goto err_out1; |
| 540 | } |
| 541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | #if SMSC_IRCC2_C_NET_TIMEOUT |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 543 | dev->watchdog_timeo = HZ * 2; /* Allow enough time for speed change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | #endif |
Stephen Hemminger | 02087be | 2009-03-20 19:35:42 +0000 | [diff] [blame^] | 545 | dev->netdev_ops = &smsc_ircc_netdev_ops; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 546 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 547 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | self->netdev = dev; |
| 549 | |
| 550 | /* Make ifconfig display some details */ |
| 551 | dev->base_addr = self->io.fir_base = fir_base; |
| 552 | dev->irq = self->io.irq = irq; |
| 553 | |
| 554 | /* Need to store self somewhere */ |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 555 | dev_self[dev_count] = self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | spin_lock_init(&self->lock); |
| 557 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 558 | self->rx_buff.truesize = SMSC_IRCC2_RX_BUFF_TRUESIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | self->tx_buff.truesize = SMSC_IRCC2_TX_BUFF_TRUESIZE; |
| 560 | |
| 561 | self->rx_buff.head = |
| 562 | dma_alloc_coherent(NULL, self->rx_buff.truesize, |
| 563 | &self->rx_buff_dma, GFP_KERNEL); |
| 564 | if (self->rx_buff.head == NULL) { |
| 565 | IRDA_ERROR("%s, Can't allocate memory for receive buffer!\n", |
| 566 | driver_name); |
| 567 | goto err_out2; |
| 568 | } |
| 569 | |
| 570 | self->tx_buff.head = |
| 571 | dma_alloc_coherent(NULL, self->tx_buff.truesize, |
| 572 | &self->tx_buff_dma, GFP_KERNEL); |
| 573 | if (self->tx_buff.head == NULL) { |
| 574 | IRDA_ERROR("%s, Can't allocate memory for transmit buffer!\n", |
| 575 | driver_name); |
| 576 | goto err_out3; |
| 577 | } |
| 578 | |
| 579 | memset(self->rx_buff.head, 0, self->rx_buff.truesize); |
| 580 | memset(self->tx_buff.head, 0, self->tx_buff.truesize); |
| 581 | |
| 582 | self->rx_buff.in_frame = FALSE; |
| 583 | self->rx_buff.state = OUTSIDE_FRAME; |
| 584 | self->tx_buff.data = self->tx_buff.head; |
| 585 | self->rx_buff.data = self->rx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 586 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | smsc_ircc_setup_qos(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | smsc_ircc_init_chip(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 590 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 591 | if (ircc_transceiver > 0 && |
| 592 | ircc_transceiver < SMSC_IRCC2_C_NUMBER_OF_TRANSCEIVERS) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | self->transceiver = ircc_transceiver; |
| 594 | else |
| 595 | smsc_ircc_probe_transceiver(self); |
| 596 | |
| 597 | err = register_netdev(self->netdev); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 598 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | IRDA_ERROR("%s, Network device registration failed!\n", |
| 600 | driver_name); |
| 601 | goto err_out4; |
| 602 | } |
| 603 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 604 | self->pldev = platform_device_register_simple(SMSC_IRCC2_DRIVER_NAME, |
| 605 | dev_count, NULL, 0); |
| 606 | if (IS_ERR(self->pldev)) { |
| 607 | err = PTR_ERR(self->pldev); |
| 608 | goto err_out5; |
| 609 | } |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 610 | platform_set_drvdata(self->pldev, self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
| 612 | IRDA_MESSAGE("IrDA: Registered device %s\n", dev->name); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 613 | dev_count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | |
| 615 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 616 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 617 | err_out5: |
| 618 | unregister_netdev(self->netdev); |
| 619 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | err_out4: |
| 621 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 622 | self->tx_buff.head, self->tx_buff_dma); |
| 623 | err_out3: |
| 624 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 625 | self->rx_buff.head, self->rx_buff_dma); |
| 626 | err_out2: |
| 627 | free_netdev(self->netdev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 628 | dev_self[dev_count] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | err_out1: |
| 630 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 631 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 632 | err_out: |
| 633 | return err; |
| 634 | } |
| 635 | |
| 636 | /* |
| 637 | * Function smsc_ircc_present(fir_base, sir_base) |
| 638 | * |
| 639 | * Check the smsc-ircc chip presence |
| 640 | * |
| 641 | */ |
| 642 | static int smsc_ircc_present(unsigned int fir_base, unsigned int sir_base) |
| 643 | { |
| 644 | unsigned char low, high, chip, config, dma, irq, version; |
| 645 | |
| 646 | if (!request_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT, |
| 647 | driver_name)) { |
| 648 | IRDA_WARNING("%s: can't get fir_base of 0x%03x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 649 | __func__, fir_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | goto out1; |
| 651 | } |
| 652 | |
| 653 | if (!request_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT, |
| 654 | driver_name)) { |
| 655 | IRDA_WARNING("%s: can't get sir_base of 0x%03x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 656 | __func__, sir_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | goto out2; |
| 658 | } |
| 659 | |
| 660 | register_bank(fir_base, 3); |
| 661 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 662 | high = inb(fir_base + IRCC_ID_HIGH); |
| 663 | low = inb(fir_base + IRCC_ID_LOW); |
| 664 | chip = inb(fir_base + IRCC_CHIP_ID); |
| 665 | version = inb(fir_base + IRCC_VERSION); |
| 666 | config = inb(fir_base + IRCC_INTERFACE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | dma = config & IRCC_INTERFACE_DMA_MASK; |
| 668 | irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
| 669 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 670 | if (high != 0x10 || low != 0xb8 || (chip != 0xf1 && chip != 0xf2)) { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 671 | IRDA_WARNING("%s(), addr 0x%04x - no device found!\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 672 | __func__, fir_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | goto out3; |
| 674 | } |
| 675 | IRDA_MESSAGE("SMsC IrDA Controller found\n IrCC version %d.%d, " |
| 676 | "firport 0x%03x, sirport 0x%03x dma=%d, irq=%d\n", |
| 677 | chip & 0x0f, version, fir_base, sir_base, dma, irq); |
| 678 | |
| 679 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 680 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | out3: |
| 682 | release_region(sir_base, SMSC_IRCC2_SIR_CHIP_IO_EXTENT); |
| 683 | out2: |
| 684 | release_region(fir_base, SMSC_IRCC2_FIR_CHIP_IO_EXTENT); |
| 685 | out1: |
| 686 | return -ENODEV; |
| 687 | } |
| 688 | |
| 689 | /* |
| 690 | * Function smsc_ircc_setup_io(self, fir_base, sir_base, dma, irq) |
| 691 | * |
| 692 | * Setup I/O |
| 693 | * |
| 694 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 695 | static void smsc_ircc_setup_io(struct smsc_ircc_cb *self, |
| 696 | unsigned int fir_base, unsigned int sir_base, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | u8 dma, u8 irq) |
| 698 | { |
| 699 | unsigned char config, chip_dma, chip_irq; |
| 700 | |
| 701 | register_bank(fir_base, 3); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 702 | config = inb(fir_base + IRCC_INTERFACE); |
| 703 | chip_dma = config & IRCC_INTERFACE_DMA_MASK; |
| 704 | chip_irq = (config & IRCC_INTERFACE_IRQ_MASK) >> 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | |
| 706 | self->io.fir_base = fir_base; |
| 707 | self->io.sir_base = sir_base; |
| 708 | self->io.fir_ext = SMSC_IRCC2_FIR_CHIP_IO_EXTENT; |
| 709 | self->io.sir_ext = SMSC_IRCC2_SIR_CHIP_IO_EXTENT; |
| 710 | self->io.fifo_size = SMSC_IRCC2_FIFO_SIZE; |
| 711 | self->io.speed = SMSC_IRCC2_C_IRDA_FALLBACK_SPEED; |
| 712 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 713 | if (irq != IRQ_INVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | if (irq != chip_irq) |
| 715 | IRDA_MESSAGE("%s, Overriding IRQ - chip says %d, using %d\n", |
| 716 | driver_name, chip_irq, irq); |
| 717 | self->io.irq = irq; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 718 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | self->io.irq = chip_irq; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 720 | |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 721 | if (dma != DMA_INVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | if (dma != chip_dma) |
| 723 | IRDA_MESSAGE("%s, Overriding DMA - chip says %d, using %d\n", |
| 724 | driver_name, chip_dma, dma); |
| 725 | self->io.dma = dma; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 726 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | self->io.dma = chip_dma; |
| 728 | |
| 729 | } |
| 730 | |
| 731 | /* |
| 732 | * Function smsc_ircc_setup_qos(self) |
| 733 | * |
| 734 | * Setup qos |
| 735 | * |
| 736 | */ |
| 737 | static void smsc_ircc_setup_qos(struct smsc_ircc_cb *self) |
| 738 | { |
| 739 | /* Initialize QoS for this device */ |
| 740 | irda_init_max_qos_capabilies(&self->qos); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 741 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | self->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600| |
| 743 | IR_115200|IR_576000|IR_1152000|(IR_4000000 << 8); |
| 744 | |
| 745 | self->qos.min_turn_time.bits = SMSC_IRCC2_MIN_TURN_TIME; |
| 746 | self->qos.window_size.bits = SMSC_IRCC2_WINDOW_SIZE; |
| 747 | irda_qos_bits_to_value(&self->qos); |
| 748 | } |
| 749 | |
| 750 | /* |
| 751 | * Function smsc_ircc_init_chip(self) |
| 752 | * |
| 753 | * Init chip |
| 754 | * |
| 755 | */ |
| 756 | static void smsc_ircc_init_chip(struct smsc_ircc_cb *self) |
| 757 | { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 758 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | |
| 760 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 761 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 762 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | register_bank(iobase, 1); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 765 | outb(((inb(iobase + IRCC_SCE_CFGA) & 0x87) | IRCC_CFGA_IRDA_SIR_A), |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 766 | iobase + IRCC_SCE_CFGA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | |
| 768 | #ifdef smsc_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 769 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 770 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 771 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 772 | outb(((inb(iobase + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 773 | iobase + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 774 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 775 | (void) inb(iobase + IRCC_FIFO_THRESHOLD); |
| 776 | outb(SMSC_IRCC2_FIFO_THRESHOLD, iobase + IRCC_FIFO_THRESHOLD); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 777 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | register_bank(iobase, 4); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 779 | outb((inb(iobase + IRCC_CONTROL) & 0x30), iobase + IRCC_CONTROL); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 780 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | register_bank(iobase, 0); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 782 | outb(0, iobase + IRCC_LCR_A); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | |
| 784 | smsc_ircc_set_sir_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 785 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | /* Power on device */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 787 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | } |
| 789 | |
| 790 | /* |
| 791 | * Function smsc_ircc_net_ioctl (dev, rq, cmd) |
| 792 | * |
| 793 | * Process IOCTL commands for this device |
| 794 | * |
| 795 | */ |
| 796 | static int smsc_ircc_net_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 797 | { |
| 798 | struct if_irda_req *irq = (struct if_irda_req *) rq; |
| 799 | struct smsc_ircc_cb *self; |
| 800 | unsigned long flags; |
| 801 | int ret = 0; |
| 802 | |
| 803 | IRDA_ASSERT(dev != NULL, return -1;); |
| 804 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 805 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | |
| 807 | IRDA_ASSERT(self != NULL, return -1;); |
| 808 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 809 | IRDA_DEBUG(2, "%s(), %s, (cmd=0x%X)\n", __func__, dev->name, cmd); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | switch (cmd) { |
| 812 | case SIOCSBANDWIDTH: /* Set bandwidth */ |
| 813 | if (!capable(CAP_NET_ADMIN)) |
| 814 | ret = -EPERM; |
| 815 | else { |
| 816 | /* Make sure we are the only one touching |
| 817 | * self->io.speed and the hardware - Jean II */ |
| 818 | spin_lock_irqsave(&self->lock, flags); |
| 819 | smsc_ircc_change_speed(self, irq->ifr_baudrate); |
| 820 | spin_unlock_irqrestore(&self->lock, flags); |
| 821 | } |
| 822 | break; |
| 823 | case SIOCSMEDIABUSY: /* Set media busy */ |
| 824 | if (!capable(CAP_NET_ADMIN)) { |
| 825 | ret = -EPERM; |
| 826 | break; |
| 827 | } |
| 828 | |
| 829 | irda_device_set_media_busy(self->netdev, TRUE); |
| 830 | break; |
| 831 | case SIOCGRECEIVING: /* Check if we are receiving right now */ |
| 832 | irq->ifr_receiving = smsc_ircc_is_receiving(self); |
| 833 | break; |
| 834 | #if 0 |
| 835 | case SIOCSDTRRTS: |
| 836 | if (!capable(CAP_NET_ADMIN)) { |
| 837 | ret = -EPERM; |
| 838 | break; |
| 839 | } |
| 840 | smsc_ircc_sir_set_dtr_rts(dev, irq->ifr_dtr, irq->ifr_rts); |
| 841 | break; |
| 842 | #endif |
| 843 | default: |
| 844 | ret = -EOPNOTSUPP; |
| 845 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 846 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | return ret; |
| 848 | } |
| 849 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | #if SMSC_IRCC2_C_NET_TIMEOUT |
| 851 | /* |
| 852 | * Function smsc_ircc_timeout (struct net_device *dev) |
| 853 | * |
| 854 | * The networking timeout management. |
| 855 | * |
| 856 | */ |
| 857 | |
| 858 | static void smsc_ircc_timeout(struct net_device *dev) |
| 859 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 860 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | unsigned long flags; |
| 862 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | IRDA_WARNING("%s: transmit timed out, changing speed to: %d\n", |
| 864 | dev->name, self->io.speed); |
| 865 | spin_lock_irqsave(&self->lock, flags); |
| 866 | smsc_ircc_sir_start(self); |
| 867 | smsc_ircc_change_speed(self, self->io.speed); |
| 868 | dev->trans_start = jiffies; |
| 869 | netif_wake_queue(dev); |
| 870 | spin_unlock_irqrestore(&self->lock, flags); |
| 871 | } |
| 872 | #endif |
| 873 | |
| 874 | /* |
| 875 | * Function smsc_ircc_hard_xmit_sir (struct sk_buff *skb, struct net_device *dev) |
| 876 | * |
| 877 | * Transmits the current frame until FIFO is full, then |
| 878 | * waits until the next transmit interrupt, and continues until the |
| 879 | * frame is transmitted. |
| 880 | */ |
Hannes Eder | 0e49e64 | 2008-12-26 00:03:19 -0800 | [diff] [blame] | 881 | static int smsc_ircc_hard_xmit_sir(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | { |
| 883 | struct smsc_ircc_cb *self; |
| 884 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | s32 speed; |
| 886 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 887 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | |
| 889 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 890 | |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 891 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | IRDA_ASSERT(self != NULL, return 0;); |
| 893 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 895 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 897 | spin_lock_irqsave(&self->lock, flags); |
| 898 | |
| 899 | /* Check if we need to change the speed */ |
| 900 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 901 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | /* Check for empty frame */ |
| 903 | if (!skb->len) { |
| 904 | /* |
| 905 | * We send frames one by one in SIR mode (no |
| 906 | * pipelining), so at this point, if we were sending |
| 907 | * a previous frame, we just received the interrupt |
| 908 | * telling us it is finished (UART_IIR_THRI). |
| 909 | * Therefore, waiting for the transmitter to really |
| 910 | * finish draining the fifo won't take too long. |
| 911 | * And the interrupt handler is not expected to run. |
| 912 | * - Jean II */ |
| 913 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 914 | smsc_ircc_change_speed(self, speed); |
| 915 | spin_unlock_irqrestore(&self->lock, flags); |
| 916 | dev_kfree_skb(skb); |
| 917 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 918 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 919 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | } |
| 921 | |
| 922 | /* Init tx buffer */ |
| 923 | self->tx_buff.data = self->tx_buff.head; |
| 924 | |
| 925 | /* Copy skb to tx_buff while wrapping, stuffing and making CRC */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 926 | self->tx_buff.len = async_wrap_skb(skb, self->tx_buff.data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | self->tx_buff.truesize); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 928 | |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 929 | dev->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | |
| 931 | /* Turn on transmit finished interrupt. Will fire immediately! */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 932 | outb(UART_IER_THRI, self->io.sir_base + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
| 934 | spin_unlock_irqrestore(&self->lock, flags); |
| 935 | |
| 936 | dev_kfree_skb(skb); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 937 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | return 0; |
| 939 | } |
| 940 | |
| 941 | /* |
| 942 | * Function smsc_ircc_set_fir_speed (self, baud) |
| 943 | * |
| 944 | * Change the speed of the device |
| 945 | * |
| 946 | */ |
| 947 | static void smsc_ircc_set_fir_speed(struct smsc_ircc_cb *self, u32 speed) |
| 948 | { |
| 949 | int fir_base, ir_mode, ctrl, fast; |
| 950 | |
| 951 | IRDA_ASSERT(self != NULL, return;); |
| 952 | fir_base = self->io.fir_base; |
| 953 | |
| 954 | self->io.speed = speed; |
| 955 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 956 | switch (speed) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | default: |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 958 | case 576000: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 960 | ctrl = IRCC_CRC; |
| 961 | fast = 0; |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 962 | IRDA_DEBUG(0, "%s(), handling baud of 576000\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | break; |
| 964 | case 1152000: |
| 965 | ir_mode = IRCC_CFGA_IRDA_HDLC; |
| 966 | ctrl = IRCC_1152 | IRCC_CRC; |
| 967 | fast = IRCC_LCR_A_FAST | IRCC_LCR_A_GP_DATA; |
| 968 | IRDA_DEBUG(0, "%s(), handling baud of 1152000\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 969 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | break; |
| 971 | case 4000000: |
| 972 | ir_mode = IRCC_CFGA_IRDA_4PPM; |
| 973 | ctrl = IRCC_CRC; |
| 974 | fast = IRCC_LCR_A_FAST; |
| 975 | IRDA_DEBUG(0, "%s(), handling baud of 4000000\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 976 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | break; |
| 978 | } |
| 979 | #if 0 |
| 980 | Now in tranceiver! |
| 981 | /* This causes an interrupt */ |
| 982 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 983 | 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] | 984 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 985 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 987 | 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] | 988 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 990 | outb((inb(fir_base + IRCC_CONTROL) & 0x30) | ctrl, fir_base + IRCC_CONTROL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | /* |
| 994 | * Function smsc_ircc_fir_start(self) |
| 995 | * |
| 996 | * Change the speed of the device |
| 997 | * |
| 998 | */ |
| 999 | static void smsc_ircc_fir_start(struct smsc_ircc_cb *self) |
| 1000 | { |
| 1001 | struct net_device *dev; |
| 1002 | int fir_base; |
| 1003 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1004 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | |
| 1006 | IRDA_ASSERT(self != NULL, return;); |
| 1007 | dev = self->netdev; |
| 1008 | IRDA_ASSERT(dev != NULL, return;); |
| 1009 | |
| 1010 | fir_base = self->io.fir_base; |
| 1011 | |
| 1012 | /* Reset everything */ |
| 1013 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | /* Clear FIFO */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1015 | 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] | 1016 | |
| 1017 | /* Enable interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1018 | /*outb(IRCC_IER_ACTIVE_FRAME|IRCC_IER_EOM, fir_base + IRCC_IER);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | |
| 1020 | register_bank(fir_base, 1); |
| 1021 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1022 | /* Select the TX/RX interface */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | #ifdef SMSC_669 /* Uses pin 88/89 for Rx/Tx */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1024 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_COM), |
| 1025 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1026 | #else |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1027 | outb(((inb(fir_base + IRCC_SCE_CFGB) & 0x3f) | IRCC_CFGB_MUX_IR), |
| 1028 | fir_base + IRCC_SCE_CFGB); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1029 | #endif |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1030 | (void) inb(fir_base + IRCC_FIFO_THRESHOLD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | |
| 1032 | /* Enable SCE interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1033 | outb(0, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1035 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, fir_base + IRCC_IER); |
| 1036 | outb(IRCC_MASTER_INT_EN, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | /* |
| 1040 | * Function smsc_ircc_fir_stop(self, baud) |
| 1041 | * |
| 1042 | * Change the speed of the device |
| 1043 | * |
| 1044 | */ |
| 1045 | static void smsc_ircc_fir_stop(struct smsc_ircc_cb *self) |
| 1046 | { |
| 1047 | int fir_base; |
| 1048 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1049 | IRDA_DEBUG(1, "%s\n", __func__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1050 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | IRDA_ASSERT(self != NULL, return;); |
| 1052 | |
| 1053 | fir_base = self->io.fir_base; |
| 1054 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1055 | /*outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER);*/ |
| 1056 | 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] | 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | /* |
| 1061 | * Function smsc_ircc_change_speed(self, baud) |
| 1062 | * |
| 1063 | * Change the speed of the device |
| 1064 | * |
| 1065 | * This function *must* be called with spinlock held, because it may |
| 1066 | * be called from the irq handler. - Jean II |
| 1067 | */ |
Dmitry Torokhov | 0fa2f49 | 2005-09-06 15:19:24 -0700 | [diff] [blame] | 1068 | 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] | 1069 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1070 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | int last_speed_was_sir; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1072 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1073 | IRDA_DEBUG(0, "%s() changing speed to: %d\n", __func__, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | |
| 1075 | IRDA_ASSERT(self != NULL, return;); |
| 1076 | dev = self->netdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | |
| 1078 | last_speed_was_sir = self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED; |
| 1079 | |
| 1080 | #if 0 |
| 1081 | /* Temp Hack */ |
| 1082 | speed= 1152000; |
| 1083 | self->io.speed = speed; |
| 1084 | last_speed_was_sir = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1085 | smsc_ircc_fir_start(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1086 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1087 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1088 | if (self->io.speed == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | smsc_ircc_sir_start(self); |
| 1090 | |
| 1091 | #if 0 |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1092 | if (!last_speed_was_sir) speed = self->io.speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | #endif |
| 1094 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1095 | if (self->io.speed != speed) |
| 1096 | smsc_ircc_set_transceiver_for_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | |
| 1098 | self->io.speed = speed; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1099 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1100 | if (speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
| 1101 | if (!last_speed_was_sir) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | smsc_ircc_fir_stop(self); |
| 1103 | smsc_ircc_sir_start(self); |
| 1104 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1105 | smsc_ircc_set_sir_speed(self, speed); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1106 | } else { |
| 1107 | if (last_speed_was_sir) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1108 | #if SMSC_IRCC2_C_SIR_STOP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | smsc_ircc_sir_stop(self); |
| 1110 | #endif |
| 1111 | smsc_ircc_fir_start(self); |
| 1112 | } |
| 1113 | smsc_ircc_set_fir_speed(self, speed); |
| 1114 | |
| 1115 | #if 0 |
| 1116 | self->tx_buff.len = 10; |
| 1117 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1118 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1119 | smsc_ircc_dma_xmit(self, 4000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | #endif |
| 1121 | /* Be ready for incoming frames */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1122 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1124 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | netif_wake_queue(dev); |
| 1126 | } |
| 1127 | |
| 1128 | /* |
| 1129 | * Function smsc_ircc_set_sir_speed (self, speed) |
| 1130 | * |
| 1131 | * Set speed of IrDA port to specified baudrate |
| 1132 | * |
| 1133 | */ |
Hannes Eder | 0e49e64 | 2008-12-26 00:03:19 -0800 | [diff] [blame] | 1134 | static void smsc_ircc_set_sir_speed(struct smsc_ircc_cb *self, __u32 speed) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1136 | int iobase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | int fcr; /* FIFO control reg */ |
| 1138 | int lcr; /* Line control reg */ |
| 1139 | int divisor; |
| 1140 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1141 | IRDA_DEBUG(0, "%s(), Setting speed to: %d\n", __func__, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | |
| 1143 | IRDA_ASSERT(self != NULL, return;); |
| 1144 | iobase = self->io.sir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | /* Update accounting for new speed */ |
| 1147 | self->io.speed = speed; |
| 1148 | |
| 1149 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1150 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1152 | divisor = SMSC_IRCC2_MAX_SIR_SPEED / speed; |
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 | fcr = UART_FCR_ENABLE_FIFO; |
| 1155 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1156 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and |
| 1158 | * 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] | 1159 | * about this timeout since it will always be fast enough. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1161 | fcr |= self->io.speed < 38400 ? |
| 1162 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1163 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | /* IrDA ports use 8N1 */ |
| 1165 | lcr = UART_LCR_WLEN8; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1166 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1167 | outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */ |
| 1168 | outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */ |
| 1169 | outb(divisor >> 8, iobase + UART_DLM); |
| 1170 | outb(lcr, iobase + UART_LCR); /* Set 8N1 */ |
| 1171 | outb(fcr, iobase + UART_FCR); /* Enable FIFO's */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | |
| 1173 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1174 | 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] | 1175 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1176 | IRDA_DEBUG(2, "%s() speed changed to: %d\n", __func__, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | } |
| 1178 | |
| 1179 | |
| 1180 | /* |
| 1181 | * Function smsc_ircc_hard_xmit_fir (skb, dev) |
| 1182 | * |
| 1183 | * Transmit the frame! |
| 1184 | * |
| 1185 | */ |
| 1186 | static int smsc_ircc_hard_xmit_fir(struct sk_buff *skb, struct net_device *dev) |
| 1187 | { |
| 1188 | struct smsc_ircc_cb *self; |
| 1189 | unsigned long flags; |
| 1190 | s32 speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1191 | int mtt; |
| 1192 | |
| 1193 | IRDA_ASSERT(dev != NULL, return 0;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1194 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | IRDA_ASSERT(self != NULL, return 0;); |
| 1196 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | netif_stop_queue(dev); |
| 1198 | |
| 1199 | /* Make sure test of self->io.speed & speed change are atomic */ |
| 1200 | spin_lock_irqsave(&self->lock, flags); |
| 1201 | |
| 1202 | /* Check if we need to change the speed after this frame */ |
| 1203 | speed = irda_get_next_speed(skb); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1204 | if (speed != self->io.speed && speed != -1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1205 | /* Check for empty frame */ |
| 1206 | if (!skb->len) { |
| 1207 | /* Note : you should make sure that speed changes |
| 1208 | * are not going to corrupt any outgoing frame. |
| 1209 | * Look at nsc-ircc for the gory details - Jean II */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1210 | smsc_ircc_change_speed(self, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | spin_unlock_irqrestore(&self->lock, flags); |
| 1212 | dev_kfree_skb(skb); |
| 1213 | return 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | self->new_speed = speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1218 | |
Arnaldo Carvalho de Melo | d626f62 | 2007-03-27 18:55:52 -0300 | [diff] [blame] | 1219 | skb_copy_from_linear_data(skb, self->tx_buff.head, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | |
| 1221 | self->tx_buff.len = skb->len; |
| 1222 | self->tx_buff.data = self->tx_buff.head; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1223 | |
| 1224 | mtt = irda_get_mtt(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | if (mtt) { |
| 1226 | int bofs; |
| 1227 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1228 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | * Compute how many BOFs (STA or PA's) we need to waste the |
| 1230 | * min turn time given the speed of the link. |
| 1231 | */ |
| 1232 | bofs = mtt * (self->io.speed / 1000) / 8000; |
| 1233 | if (bofs > 4095) |
| 1234 | bofs = 4095; |
| 1235 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1236 | smsc_ircc_dma_xmit(self, bofs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | } else { |
| 1238 | /* Transmit frame */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1239 | smsc_ircc_dma_xmit(self, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1241 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | spin_unlock_irqrestore(&self->lock, flags); |
| 1243 | dev_kfree_skb(skb); |
| 1244 | |
| 1245 | return 0; |
| 1246 | } |
| 1247 | |
| 1248 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1249 | * Function smsc_ircc_dma_xmit (self, bofs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | * |
| 1251 | * Transmit data using DMA |
| 1252 | * |
| 1253 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1254 | 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] | 1255 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1256 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1257 | u8 ctrl; |
| 1258 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1259 | IRDA_DEBUG(3, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | #if 1 |
| 1261 | /* Disable Rx */ |
| 1262 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1263 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | #endif |
| 1265 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1266 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1267 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | |
| 1269 | self->io.direction = IO_XMIT; |
| 1270 | |
| 1271 | /* Set BOF additional count for generating the min turn time */ |
| 1272 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1273 | outb(bofs & 0xff, iobase + IRCC_BOF_COUNT_LO); |
| 1274 | ctrl = inb(iobase + IRCC_CONTROL) & 0xf0; |
| 1275 | outb(ctrl | ((bofs >> 8) & 0x0f), iobase + IRCC_BOF_COUNT_HI); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | |
| 1277 | /* Set max Tx frame size */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1278 | outb(self->tx_buff.len >> 8, iobase + IRCC_TX_SIZE_HI); |
| 1279 | outb(self->tx_buff.len & 0xff, iobase + IRCC_TX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | |
| 1281 | /*outb(UART_MCR_OUT2, self->io.sir_base + UART_MCR);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1282 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | /* Enable burst mode chip Tx DMA */ |
| 1284 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1285 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1286 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | |
| 1288 | /* Setup DMA controller (must be done after enabling chip DMA) */ |
| 1289 | irda_setup_dma(self->io.dma, self->tx_buff_dma, self->tx_buff.len, |
| 1290 | DMA_TX_MODE); |
| 1291 | |
| 1292 | /* Enable interrupt */ |
| 1293 | |
| 1294 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1295 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1296 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | /* Enable transmit */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1299 | 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] | 1300 | } |
| 1301 | |
| 1302 | /* |
| 1303 | * Function smsc_ircc_dma_xmit_complete (self) |
| 1304 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1305 | * 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] | 1306 | * by the interrupt handler |
| 1307 | * |
| 1308 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1309 | static void smsc_ircc_dma_xmit_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1311 | int iobase = self->io.fir_base; |
| 1312 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1313 | IRDA_DEBUG(3, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | #if 0 |
| 1315 | /* Disable Tx */ |
| 1316 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1317 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | #endif |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1319 | register_bank(iobase, 1); |
| 1320 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1321 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | |
| 1323 | /* Check for underrun! */ |
| 1324 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1325 | if (inb(iobase + IRCC_LSR) & IRCC_LSR_UNDERRUN) { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1326 | self->netdev->stats.tx_errors++; |
| 1327 | self->netdev->stats.tx_fifo_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1328 | |
| 1329 | /* Reset error condition */ |
| 1330 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1331 | outb(IRCC_MASTER_ERROR_RESET, iobase + IRCC_MASTER); |
| 1332 | outb(0x00, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | } else { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1334 | self->netdev->stats.tx_packets++; |
| 1335 | self->netdev->stats.tx_bytes += self->tx_buff.len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | } |
| 1337 | |
| 1338 | /* Check if it's time to change the speed */ |
| 1339 | if (self->new_speed) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1340 | smsc_ircc_change_speed(self, self->new_speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1341 | self->new_speed = 0; |
| 1342 | } |
| 1343 | |
| 1344 | netif_wake_queue(self->netdev); |
| 1345 | } |
| 1346 | |
| 1347 | /* |
| 1348 | * Function smsc_ircc_dma_receive(self) |
| 1349 | * |
| 1350 | * Get ready for receiving a frame. The device will initiate a DMA |
| 1351 | * if it starts to receive a frame. |
| 1352 | * |
| 1353 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1354 | static int smsc_ircc_dma_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | { |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1356 | int iobase = self->io.fir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | #if 0 |
| 1358 | /* Turn off chip DMA */ |
| 1359 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1360 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1361 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | /* Disable Tx */ |
| 1365 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1366 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | |
| 1368 | /* Turn off chip DMA */ |
| 1369 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1370 | outb(inb(iobase + IRCC_SCE_CFGB) & ~IRCC_CFGB_DMA_ENABLE, |
| 1371 | iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | |
| 1373 | self->io.direction = IO_RECV; |
| 1374 | self->rx_buff.data = self->rx_buff.head; |
| 1375 | |
| 1376 | /* Set max Rx frame size */ |
| 1377 | register_bank(iobase, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1378 | outb((2050 >> 8) & 0x0f, iobase + IRCC_RX_SIZE_HI); |
| 1379 | outb(2050 & 0xff, iobase + IRCC_RX_SIZE_LO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | |
| 1381 | /* Setup DMA controller */ |
| 1382 | irda_setup_dma(self->io.dma, self->rx_buff_dma, self->rx_buff.truesize, |
| 1383 | DMA_RX_MODE); |
| 1384 | |
| 1385 | /* Enable burst mode chip Rx DMA */ |
| 1386 | register_bank(iobase, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1387 | outb(inb(iobase + IRCC_SCE_CFGB) | IRCC_CFGB_DMA_ENABLE | |
| 1388 | IRCC_CFGB_DMA_BURST, iobase + IRCC_SCE_CFGB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | |
| 1390 | /* Enable interrupt */ |
| 1391 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1392 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
| 1393 | outb(IRCC_MASTER_INT_EN, iobase + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | |
| 1395 | /* Enable receiver */ |
| 1396 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1397 | outb(IRCC_LCR_B_SCE_RECEIVE | IRCC_LCR_B_SIP_ENABLE, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1398 | iobase + IRCC_LCR_B); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | return 0; |
| 1401 | } |
| 1402 | |
| 1403 | /* |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1404 | * Function smsc_ircc_dma_receive_complete(self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | * |
| 1406 | * Finished with receiving frames |
| 1407 | * |
| 1408 | */ |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1409 | static void smsc_ircc_dma_receive_complete(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | { |
| 1411 | struct sk_buff *skb; |
| 1412 | int len, msgcnt, lsr; |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1413 | int iobase = self->io.fir_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | register_bank(iobase, 0); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1416 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1417 | IRDA_DEBUG(3, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | #if 0 |
| 1419 | /* Disable Rx */ |
| 1420 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1421 | outb(0x00, iobase + IRCC_LCR_B); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | #endif |
| 1423 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1424 | outb(inb(iobase + IRCC_LSAR) & ~IRCC_LSAR_ADDRESS_MASK, iobase + IRCC_LSAR); |
| 1425 | lsr= inb(iobase + IRCC_LSR); |
| 1426 | msgcnt = inb(iobase + IRCC_LCR_B) & 0x08; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1428 | IRDA_DEBUG(2, "%s: dma count = %d\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1429 | get_dma_residue(self->io.dma)); |
| 1430 | |
| 1431 | len = self->rx_buff.truesize - get_dma_residue(self->io.dma); |
| 1432 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1433 | /* Look for errors */ |
| 1434 | if (lsr & (IRCC_LSR_FRAME_ERROR | IRCC_LSR_CRC_ERROR | IRCC_LSR_SIZE_ERROR)) { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1435 | self->netdev->stats.rx_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1436 | if (lsr & IRCC_LSR_FRAME_ERROR) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1437 | self->netdev->stats.rx_frame_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1438 | if (lsr & IRCC_LSR_CRC_ERROR) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1439 | self->netdev->stats.rx_crc_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1440 | if (lsr & IRCC_LSR_SIZE_ERROR) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1441 | self->netdev->stats.rx_length_errors++; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1442 | if (lsr & (IRCC_LSR_UNDERRUN | IRCC_LSR_OVERRUN)) |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1443 | self->netdev->stats.rx_length_errors++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | return; |
| 1445 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1447 | /* Remove CRC */ |
| 1448 | len -= self->io.speed < 4000000 ? 2 : 4; |
| 1449 | |
| 1450 | if (len < 2 || len > 2050) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1451 | IRDA_WARNING("%s(), bogus len=%d\n", __func__, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1452 | return; |
| 1453 | } |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1454 | IRDA_DEBUG(2, "%s: msgcnt = %d, len=%d\n", __func__, msgcnt, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1455 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1456 | skb = dev_alloc_skb(len + 1); |
| 1457 | if (!skb) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | IRDA_WARNING("%s(), memory squeeze, dropping frame.\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1459 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | return; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1461 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | /* Make sure IP header gets aligned */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1463 | skb_reserve(skb, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | |
| 1465 | memcpy(skb_put(skb, len), self->rx_buff.data, len); |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1466 | self->netdev->stats.rx_packets++; |
| 1467 | self->netdev->stats.rx_bytes += len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | |
| 1469 | skb->dev = self->netdev; |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 1470 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | skb->protocol = htons(ETH_P_IRDA); |
| 1472 | netif_rx(skb); |
| 1473 | } |
| 1474 | |
| 1475 | /* |
| 1476 | * Function smsc_ircc_sir_receive (self) |
| 1477 | * |
| 1478 | * Receive one frame from the infrared port |
| 1479 | * |
| 1480 | */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1481 | static void smsc_ircc_sir_receive(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | { |
| 1483 | int boguscount = 0; |
| 1484 | int iobase; |
| 1485 | |
| 1486 | IRDA_ASSERT(self != NULL, return;); |
| 1487 | |
| 1488 | iobase = self->io.sir_base; |
| 1489 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1490 | /* |
| 1491 | * Receive all characters in Rx FIFO, unwrap and unstuff them. |
| 1492 | * async_unwrap_char will deliver all found frames |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | */ |
| 1494 | do { |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1495 | async_unwrap_char(self->netdev, &self->netdev->stats, &self->rx_buff, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1496 | inb(iobase + UART_RX)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | |
| 1498 | /* Make sure we don't stay here to long */ |
| 1499 | if (boguscount++ > 32) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1500 | IRDA_DEBUG(2, "%s(), breaking!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | break; |
| 1502 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1503 | } while (inb(iobase + UART_LSR) & UART_LSR_DR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | } |
| 1505 | |
| 1506 | |
| 1507 | /* |
| 1508 | * Function smsc_ircc_interrupt (irq, dev_id, regs) |
| 1509 | * |
| 1510 | * An interrupt from the chip has arrived. Time to do some work |
| 1511 | * |
| 1512 | */ |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 1513 | static irqreturn_t smsc_ircc_interrupt(int dummy, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | { |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 1515 | struct net_device *dev = dev_id; |
| 1516 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | int iobase, iir, lcra, lsr; |
| 1518 | irqreturn_t ret = IRQ_NONE; |
| 1519 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | /* Serialise the interrupt handler in various CPUs, stop Tx path */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1521 | spin_lock(&self->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
| 1523 | /* Check if we should use the SIR interrupt handler */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1524 | if (self->io.speed <= SMSC_IRCC2_MAX_SIR_SPEED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | ret = smsc_ircc_interrupt_sir(dev); |
| 1526 | goto irq_ret_unlock; |
| 1527 | } |
| 1528 | |
| 1529 | iobase = self->io.fir_base; |
| 1530 | |
| 1531 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1532 | iir = inb(iobase + IRCC_IIR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1533 | if (iir == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | goto irq_ret_unlock; |
| 1535 | ret = IRQ_HANDLED; |
| 1536 | |
| 1537 | /* Disable interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1538 | outb(0, iobase + IRCC_IER); |
| 1539 | lcra = inb(iobase + IRCC_LCR_A); |
| 1540 | lsr = inb(iobase + IRCC_LSR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1541 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1542 | IRDA_DEBUG(2, "%s(), iir = 0x%02x\n", __func__, iir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | |
| 1544 | if (iir & IRCC_IIR_EOM) { |
| 1545 | if (self->io.direction == IO_RECV) |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1546 | smsc_ircc_dma_receive_complete(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | else |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1548 | smsc_ircc_dma_xmit_complete(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1549 | |
Dmitry Torokhov | 80a9058 | 2005-09-06 15:19:21 -0700 | [diff] [blame] | 1550 | smsc_ircc_dma_receive(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | } |
| 1552 | |
| 1553 | if (iir & IRCC_IIR_ACTIVE_FRAME) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1554 | /*printk(KERN_WARNING "%s(): Active Frame\n", __func__);*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | } |
| 1556 | |
| 1557 | /* Enable interrupts again */ |
| 1558 | |
| 1559 | register_bank(iobase, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1560 | outb(IRCC_IER_ACTIVE_FRAME | IRCC_IER_EOM, iobase + IRCC_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1561 | |
| 1562 | irq_ret_unlock: |
| 1563 | spin_unlock(&self->lock); |
Jeff Garzik | 28fc1f5 | 2007-10-29 05:46:16 -0400 | [diff] [blame] | 1564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | return ret; |
| 1566 | } |
| 1567 | |
| 1568 | /* |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1569 | * Function irport_interrupt_sir (irq, dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | * |
| 1571 | * Interrupt handler for SIR modes |
| 1572 | */ |
| 1573 | static irqreturn_t smsc_ircc_interrupt_sir(struct net_device *dev) |
| 1574 | { |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1575 | struct smsc_ircc_cb *self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | int boguscount = 0; |
| 1577 | int iobase; |
| 1578 | int iir, lsr; |
| 1579 | |
| 1580 | /* Already locked comming here in smsc_ircc_interrupt() */ |
| 1581 | /*spin_lock(&self->lock);*/ |
| 1582 | |
| 1583 | iobase = self->io.sir_base; |
| 1584 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1585 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | if (iir == 0) |
| 1587 | return IRQ_NONE; |
| 1588 | while (iir) { |
| 1589 | /* Clear interrupt */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1590 | lsr = inb(iobase + UART_LSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1592 | IRDA_DEBUG(4, "%s(), iir=%02x, lsr=%02x, iobase=%#x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1593 | __func__, iir, lsr, iobase); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | |
| 1595 | switch (iir) { |
| 1596 | case UART_IIR_RLSI: |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1597 | IRDA_DEBUG(2, "%s(), RLSI\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | break; |
| 1599 | case UART_IIR_RDI: |
| 1600 | /* Receive interrupt */ |
| 1601 | smsc_ircc_sir_receive(self); |
| 1602 | break; |
| 1603 | case UART_IIR_THRI: |
| 1604 | if (lsr & UART_LSR_THRE) |
| 1605 | /* Transmitter ready for data */ |
| 1606 | smsc_ircc_sir_write_wakeup(self); |
| 1607 | break; |
| 1608 | default: |
| 1609 | IRDA_DEBUG(0, "%s(), unhandled IIR=%#x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1610 | __func__, iir); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1612 | } |
| 1613 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | /* Make sure we don't stay here to long */ |
| 1615 | if (boguscount++ > 100) |
| 1616 | break; |
| 1617 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1618 | iir = inb(iobase + UART_IIR) & UART_IIR_ID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | } |
| 1620 | /*spin_unlock(&self->lock);*/ |
| 1621 | return IRQ_HANDLED; |
| 1622 | } |
| 1623 | |
| 1624 | |
| 1625 | #if 0 /* unused */ |
| 1626 | /* |
| 1627 | * Function ircc_is_receiving (self) |
| 1628 | * |
| 1629 | * Return TRUE is we are currently receiving a frame |
| 1630 | * |
| 1631 | */ |
| 1632 | static int ircc_is_receiving(struct smsc_ircc_cb *self) |
| 1633 | { |
| 1634 | int status = FALSE; |
| 1635 | /* int iobase; */ |
| 1636 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1637 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | |
| 1639 | IRDA_ASSERT(self != NULL, return FALSE;); |
| 1640 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1641 | IRDA_DEBUG(0, "%s: dma count = %d\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | get_dma_residue(self->io.dma)); |
| 1643 | |
| 1644 | status = (self->rx_buff.state != OUTSIDE_FRAME); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1645 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1646 | return status; |
| 1647 | } |
| 1648 | #endif /* unused */ |
| 1649 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1650 | static int smsc_ircc_request_irq(struct smsc_ircc_cb *self) |
| 1651 | { |
| 1652 | int error; |
| 1653 | |
| 1654 | error = request_irq(self->io.irq, smsc_ircc_interrupt, 0, |
| 1655 | self->netdev->name, self->netdev); |
| 1656 | if (error) |
| 1657 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d, err=%d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1658 | __func__, self->io.irq, error); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1659 | |
| 1660 | return error; |
| 1661 | } |
| 1662 | |
| 1663 | static void smsc_ircc_start_interrupts(struct smsc_ircc_cb *self) |
| 1664 | { |
| 1665 | unsigned long flags; |
| 1666 | |
| 1667 | spin_lock_irqsave(&self->lock, flags); |
| 1668 | |
| 1669 | self->io.speed = 0; |
| 1670 | smsc_ircc_change_speed(self, SMSC_IRCC2_C_IRDA_FALLBACK_SPEED); |
| 1671 | |
| 1672 | spin_unlock_irqrestore(&self->lock, flags); |
| 1673 | } |
| 1674 | |
| 1675 | static void smsc_ircc_stop_interrupts(struct smsc_ircc_cb *self) |
| 1676 | { |
| 1677 | int iobase = self->io.fir_base; |
| 1678 | unsigned long flags; |
| 1679 | |
| 1680 | spin_lock_irqsave(&self->lock, flags); |
| 1681 | |
| 1682 | register_bank(iobase, 0); |
| 1683 | outb(0, iobase + IRCC_IER); |
| 1684 | outb(IRCC_MASTER_RESET, iobase + IRCC_MASTER); |
| 1685 | outb(0x00, iobase + IRCC_MASTER); |
| 1686 | |
| 1687 | spin_unlock_irqrestore(&self->lock, flags); |
| 1688 | } |
| 1689 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | |
| 1691 | /* |
| 1692 | * Function smsc_ircc_net_open (dev) |
| 1693 | * |
| 1694 | * Start the device |
| 1695 | * |
| 1696 | */ |
| 1697 | static int smsc_ircc_net_open(struct net_device *dev) |
| 1698 | { |
| 1699 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | char hwname[16]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1702 | IRDA_DEBUG(1, "%s\n", __func__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1705 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1706 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1707 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1708 | if (self->io.suspended) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1709 | IRDA_DEBUG(0, "%s(), device is suspended\n", __func__); |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1710 | return -EAGAIN; |
| 1711 | } |
| 1712 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1713 | if (request_irq(self->io.irq, smsc_ircc_interrupt, 0, dev->name, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | (void *) dev)) { |
| 1715 | IRDA_DEBUG(0, "%s(), unable to allocate irq=%d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1716 | __func__, self->io.irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1717 | return -EAGAIN; |
| 1718 | } |
| 1719 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1720 | smsc_ircc_start_interrupts(self); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1722 | /* Give self a hardware name */ |
| 1723 | /* It would be cool to offer the chip revision here - Jean II */ |
| 1724 | sprintf(hwname, "SMSC @ 0x%03x", self->io.fir_base); |
| 1725 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1726 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | * Open new IrLAP layer instance, now that everything should be |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1728 | * initialized properly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | */ |
| 1730 | self->irlap = irlap_open(dev, &self->qos, hwname); |
| 1731 | |
| 1732 | /* |
| 1733 | * Always allocate the DMA channel after the IRQ, |
| 1734 | * and clean up on failure. |
| 1735 | */ |
| 1736 | if (request_dma(self->io.dma, dev->name)) { |
| 1737 | smsc_ircc_net_close(dev); |
| 1738 | |
| 1739 | IRDA_WARNING("%s(), unable to allocate DMA=%d\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1740 | __func__, self->io.dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | return -EAGAIN; |
| 1742 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1743 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | netif_start_queue(dev); |
| 1745 | |
| 1746 | return 0; |
| 1747 | } |
| 1748 | |
| 1749 | /* |
| 1750 | * Function smsc_ircc_net_close (dev) |
| 1751 | * |
| 1752 | * Stop the device |
| 1753 | * |
| 1754 | */ |
| 1755 | static int smsc_ircc_net_close(struct net_device *dev) |
| 1756 | { |
| 1757 | struct smsc_ircc_cb *self; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1759 | IRDA_DEBUG(1, "%s\n", __func__); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1760 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | IRDA_ASSERT(dev != NULL, return -1;); |
Dmitry Torokhov | da0841a | 2005-09-06 15:19:23 -0700 | [diff] [blame] | 1762 | self = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | IRDA_ASSERT(self != NULL, return 0;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1765 | /* Stop device */ |
| 1766 | netif_stop_queue(dev); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1767 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1768 | /* Stop and remove instance of IrLAP */ |
| 1769 | if (self->irlap) |
| 1770 | irlap_close(self->irlap); |
| 1771 | self->irlap = NULL; |
| 1772 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1773 | smsc_ircc_stop_interrupts(self); |
| 1774 | |
| 1775 | /* if we are called from smsc_ircc_resume we don't have IRQ reserved */ |
| 1776 | if (!self->io.suspended) |
| 1777 | free_irq(self->io.irq, dev); |
| 1778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | disable_dma(self->io.dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1780 | free_dma(self->io.dma); |
| 1781 | |
| 1782 | return 0; |
| 1783 | } |
| 1784 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1785 | 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] | 1786 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1787 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1788 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1789 | if (!self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1790 | IRDA_DEBUG(1, "%s, Suspending\n", driver_name); |
| 1791 | |
| 1792 | rtnl_lock(); |
| 1793 | if (netif_running(self->netdev)) { |
| 1794 | netif_device_detach(self->netdev); |
| 1795 | smsc_ircc_stop_interrupts(self); |
| 1796 | free_irq(self->io.irq, self->netdev); |
| 1797 | disable_dma(self->io.dma); |
| 1798 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1799 | self->io.suspended = 1; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1800 | rtnl_unlock(); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1801 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1802 | |
| 1803 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | } |
| 1805 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1806 | static int smsc_ircc_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1808 | struct smsc_ircc_cb *self = platform_get_drvdata(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1810 | if (self->io.suspended) { |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1811 | IRDA_DEBUG(1, "%s, Waking up\n", driver_name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1813 | rtnl_lock(); |
| 1814 | smsc_ircc_init_chip(self); |
| 1815 | if (netif_running(self->netdev)) { |
| 1816 | if (smsc_ircc_request_irq(self)) { |
| 1817 | /* |
| 1818 | * Don't fail resume process, just kill this |
| 1819 | * network interface |
| 1820 | */ |
| 1821 | unregister_netdevice(self->netdev); |
| 1822 | } else { |
| 1823 | enable_dma(self->io.dma); |
| 1824 | smsc_ircc_start_interrupts(self); |
| 1825 | netif_device_attach(self->netdev); |
| 1826 | } |
| 1827 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1828 | self->io.suspended = 0; |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1829 | rtnl_unlock(); |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1830 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | return 0; |
| 1832 | } |
| 1833 | |
| 1834 | /* |
| 1835 | * Function smsc_ircc_close (self) |
| 1836 | * |
| 1837 | * Close driver instance |
| 1838 | * |
| 1839 | */ |
| 1840 | static int __exit smsc_ircc_close(struct smsc_ircc_cb *self) |
| 1841 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1842 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | |
| 1844 | IRDA_ASSERT(self != NULL, return -1;); |
| 1845 | |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1846 | platform_device_unregister(self->pldev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1847 | |
| 1848 | /* Remove netdevice */ |
| 1849 | unregister_netdev(self->netdev); |
| 1850 | |
Dmitry Torokhov | e812cb5 | 2005-10-30 15:00:14 -0800 | [diff] [blame] | 1851 | smsc_ircc_stop_interrupts(self); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1852 | |
| 1853 | /* Release the PORTS that this driver is using */ |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1854 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | self->io.fir_base); |
| 1856 | |
| 1857 | release_region(self->io.fir_base, self->io.fir_ext); |
| 1858 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1859 | IRDA_DEBUG(0, "%s(), releasing 0x%03x\n", __func__, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | self->io.sir_base); |
| 1861 | |
| 1862 | release_region(self->io.sir_base, self->io.sir_ext); |
| 1863 | |
| 1864 | if (self->tx_buff.head) |
| 1865 | dma_free_coherent(NULL, self->tx_buff.truesize, |
| 1866 | self->tx_buff.head, self->tx_buff_dma); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1867 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | if (self->rx_buff.head) |
| 1869 | dma_free_coherent(NULL, self->rx_buff.truesize, |
| 1870 | self->rx_buff.head, self->rx_buff_dma); |
| 1871 | |
| 1872 | free_netdev(self->netdev); |
| 1873 | |
| 1874 | return 0; |
| 1875 | } |
| 1876 | |
| 1877 | static void __exit smsc_ircc_cleanup(void) |
| 1878 | { |
| 1879 | int i; |
| 1880 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1881 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1883 | for (i = 0; i < 2; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | if (dev_self[i]) |
| 1885 | smsc_ircc_close(dev_self[i]); |
| 1886 | } |
Dmitry Torokhov | 6bb3b2c | 2005-09-06 15:19:22 -0700 | [diff] [blame] | 1887 | |
Bjorn Helgaas | d0d4f69 | 2007-05-08 00:36:05 -0700 | [diff] [blame] | 1888 | if (pnp_driver_registered) |
| 1889 | pnp_unregister_driver(&smsc_ircc_pnp_driver); |
| 1890 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1891 | platform_driver_unregister(&smsc_ircc_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1892 | } |
| 1893 | |
| 1894 | /* |
| 1895 | * Start SIR operations |
| 1896 | * |
| 1897 | * This function *must* be called with spinlock held, because it may |
| 1898 | * be called from the irq handler (via smsc_ircc_change_speed()). - Jean II |
| 1899 | */ |
Hannes Eder | 0e49e64 | 2008-12-26 00:03:19 -0800 | [diff] [blame] | 1900 | static void smsc_ircc_sir_start(struct smsc_ircc_cb *self) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | { |
| 1902 | struct net_device *dev; |
| 1903 | int fir_base, sir_base; |
| 1904 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1905 | IRDA_DEBUG(3, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1907 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1908 | dev = self->netdev; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1909 | IRDA_ASSERT(dev != NULL, return;); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1910 | |
| 1911 | fir_base = self->io.fir_base; |
| 1912 | sir_base = self->io.sir_base; |
| 1913 | |
| 1914 | /* Reset everything */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1915 | outb(IRCC_MASTER_RESET, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | |
| 1917 | #if SMSC_IRCC2_C_SIR_STOP |
| 1918 | /*smsc_ircc_sir_stop(self);*/ |
| 1919 | #endif |
| 1920 | |
| 1921 | register_bank(fir_base, 1); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1922 | 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] | 1923 | |
| 1924 | /* Initialize UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1925 | outb(UART_LCR_WLEN8, sir_base + UART_LCR); /* Reset DLAB */ |
| 1926 | 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] | 1927 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | /* Turn on interrups */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1929 | 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] | 1930 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1931 | IRDA_DEBUG(3, "%s() - exit\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1933 | outb(0x00, fir_base + IRCC_MASTER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | } |
| 1935 | |
| 1936 | #if SMSC_IRCC2_C_SIR_STOP |
| 1937 | void smsc_ircc_sir_stop(struct smsc_ircc_cb *self) |
| 1938 | { |
| 1939 | int iobase; |
| 1940 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1941 | IRDA_DEBUG(3, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | iobase = self->io.sir_base; |
| 1943 | |
| 1944 | /* Reset UART */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1945 | outb(0, iobase + UART_MCR); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1946 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | /* Turn off interrupts */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1948 | outb(0, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | } |
| 1950 | #endif |
| 1951 | |
| 1952 | /* |
| 1953 | * Function smsc_sir_write_wakeup (self) |
| 1954 | * |
| 1955 | * Called by the SIR interrupt handler when there's room for more data. |
| 1956 | * If we have more packets to send, we send them here. |
| 1957 | * |
| 1958 | */ |
| 1959 | static void smsc_ircc_sir_write_wakeup(struct smsc_ircc_cb *self) |
| 1960 | { |
| 1961 | int actual = 0; |
| 1962 | int iobase; |
| 1963 | int fcr; |
| 1964 | |
| 1965 | IRDA_ASSERT(self != NULL, return;); |
| 1966 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1967 | IRDA_DEBUG(4, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | |
| 1969 | iobase = self->io.sir_base; |
| 1970 | |
| 1971 | /* Finished with frame? */ |
| 1972 | if (self->tx_buff.len > 0) { |
| 1973 | /* Write data left in transmit buffer */ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1974 | actual = smsc_ircc_sir_write(iobase, self->io.fifo_size, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | self->tx_buff.data, self->tx_buff.len); |
| 1976 | self->tx_buff.data += actual; |
| 1977 | self->tx_buff.len -= actual; |
| 1978 | } else { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1979 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1980 | /*if (self->tx_buff.len ==0) {*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 1981 | |
| 1982 | /* |
| 1983 | * Now serial buffer is almost free & we can start |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | * transmission of another packet. But first we must check |
| 1985 | * if we need to change the speed of the hardware |
| 1986 | */ |
| 1987 | if (self->new_speed) { |
| 1988 | IRDA_DEBUG(5, "%s(), Changing speed to %d.\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 1989 | __func__, self->new_speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | smsc_ircc_sir_wait_hw_transmitter_finish(self); |
| 1991 | smsc_ircc_change_speed(self, self->new_speed); |
| 1992 | self->new_speed = 0; |
| 1993 | } else { |
| 1994 | /* Tell network layer that we want more frames */ |
| 1995 | netif_wake_queue(self->netdev); |
| 1996 | } |
Stephen Hemminger | af04908 | 2009-01-06 10:40:43 -0800 | [diff] [blame] | 1997 | self->netdev->stats.tx_packets++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 1999 | if (self->io.speed <= 115200) { |
| 2000 | /* |
| 2001 | * Reset Rx FIFO to make sure that all reflected transmit data |
| 2002 | * is discarded. This is needed for half duplex operation |
| 2003 | */ |
| 2004 | fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR; |
| 2005 | fcr |= self->io.speed < 38400 ? |
| 2006 | UART_FCR_TRIGGER_1 : UART_FCR_TRIGGER_14; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2008 | outb(fcr, iobase + UART_FCR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2010 | /* Turn on receive interrupts */ |
| 2011 | outb(UART_IER_RDI, iobase + UART_IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | } |
| 2013 | } |
| 2014 | } |
| 2015 | |
| 2016 | /* |
| 2017 | * Function smsc_ircc_sir_write (iobase, fifo_size, buf, len) |
| 2018 | * |
| 2019 | * Fill Tx FIFO with transmit data |
| 2020 | * |
| 2021 | */ |
| 2022 | static int smsc_ircc_sir_write(int iobase, int fifo_size, __u8 *buf, int len) |
| 2023 | { |
| 2024 | int actual = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2025 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | /* Tx FIFO should be empty! */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2027 | if (!(inb(iobase + UART_LSR) & UART_LSR_THRE)) { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2028 | IRDA_WARNING("%s(), failed, fifo not empty!\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | return 0; |
| 2030 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2031 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | /* Fill FIFO with current frame */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2033 | while (fifo_size-- > 0 && actual < len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | /* Transmit next byte */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2035 | outb(buf[actual], iobase + UART_TX); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | actual++; |
| 2037 | } |
| 2038 | return actual; |
| 2039 | } |
| 2040 | |
| 2041 | /* |
| 2042 | * Function smsc_ircc_is_receiving (self) |
| 2043 | * |
| 2044 | * Returns true is we are currently receiving data |
| 2045 | * |
| 2046 | */ |
| 2047 | static int smsc_ircc_is_receiving(struct smsc_ircc_cb *self) |
| 2048 | { |
| 2049 | return (self->rx_buff.state != OUTSIDE_FRAME); |
| 2050 | } |
| 2051 | |
| 2052 | |
| 2053 | /* |
| 2054 | * Function smsc_ircc_probe_transceiver(self) |
| 2055 | * |
| 2056 | * Tries to find the used Transceiver |
| 2057 | * |
| 2058 | */ |
| 2059 | static void smsc_ircc_probe_transceiver(struct smsc_ircc_cb *self) |
| 2060 | { |
| 2061 | unsigned int i; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | IRDA_ASSERT(self != NULL, return;); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2064 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2065 | for (i = 0; smsc_transceivers[i].name != NULL; i++) |
| 2066 | if (smsc_transceivers[i].probe(self->io.fir_base)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | IRDA_MESSAGE(" %s transceiver found\n", |
| 2068 | smsc_transceivers[i].name); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2069 | self->transceiver= i + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | return; |
| 2071 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2072 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | IRDA_MESSAGE("No transceiver found. Defaulting to %s\n", |
| 2074 | smsc_transceivers[SMSC_IRCC2_C_DEFAULT_TRANSCEIVER].name); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2075 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2076 | self->transceiver = SMSC_IRCC2_C_DEFAULT_TRANSCEIVER; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2077 | } |
| 2078 | |
| 2079 | |
| 2080 | /* |
| 2081 | * Function smsc_ircc_set_transceiver_for_speed(self, speed) |
| 2082 | * |
| 2083 | * Set the transceiver according to the speed |
| 2084 | * |
| 2085 | */ |
| 2086 | static void smsc_ircc_set_transceiver_for_speed(struct smsc_ircc_cb *self, u32 speed) |
| 2087 | { |
| 2088 | unsigned int trx; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2089 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | trx = self->transceiver; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2091 | if (trx > 0) |
| 2092 | smsc_transceivers[trx - 1].set_for_speed(self->io.fir_base, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | } |
| 2094 | |
| 2095 | /* |
| 2096 | * Function smsc_ircc_wait_hw_transmitter_finish () |
| 2097 | * |
| 2098 | * Wait for the real end of HW transmission |
| 2099 | * |
| 2100 | * The UART is a strict FIFO, and we get called only when we have finished |
| 2101 | * pushing data to the FIFO, so the maximum amount of time we must wait |
| 2102 | * is only for the FIFO to drain out. |
| 2103 | * |
| 2104 | * We use a simple calibrated loop. We may need to adjust the loop |
| 2105 | * delay (udelay) to balance I/O traffic and latency. And we also need to |
| 2106 | * adjust the maximum timeout. |
| 2107 | * It would probably be better to wait for the proper interrupt, |
| 2108 | * but it doesn't seem to be available. |
| 2109 | * |
| 2110 | * We can't use jiffies or kernel timers because : |
| 2111 | * 1) We are called from the interrupt handler, which disable softirqs, |
| 2112 | * so jiffies won't be increased |
| 2113 | * 2) Jiffies granularity is usually very coarse (10ms), and we don't |
| 2114 | * want to wait that long to detect stuck hardware. |
| 2115 | * Jean II |
| 2116 | */ |
| 2117 | |
| 2118 | static void smsc_ircc_sir_wait_hw_transmitter_finish(struct smsc_ircc_cb *self) |
| 2119 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2120 | int iobase = self->io.sir_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | int count = SMSC_IRCC2_HW_TRANSMITTER_TIMEOUT_US; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2123 | /* Calibrated busy loop */ |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2124 | while (count-- > 0 && !(inb(iobase + UART_LSR) & UART_LSR_TEMT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2125 | udelay(1); |
| 2126 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2127 | if (count == 0) |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2128 | IRDA_DEBUG(0, "%s(): stuck transmitter\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | } |
| 2130 | |
| 2131 | |
| 2132 | /* PROBING |
| 2133 | * |
David Brownell | d94c77b | 2006-05-09 15:26:11 -0700 | [diff] [blame] | 2134 | * REVISIT we can be told about the device by PNP, and should use that info |
| 2135 | * instead of probing hardware and creating a platform_device ... |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | */ |
| 2137 | |
| 2138 | static int __init smsc_ircc_look_for_chips(void) |
| 2139 | { |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2140 | struct smsc_chip_address *address; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2141 | char *type; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2142 | unsigned int cfg_base, found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2144 | found = 0; |
| 2145 | address = possible_addresses; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2146 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2147 | while (address->cfg_base) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | cfg_base = address->cfg_base; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2149 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2150 | /*printk(KERN_WARNING "%s(): probing: 0x%02x for: 0x%02x\n", __func__, cfg_base, address->type);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2151 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2152 | if (address->type & SMSCSIO_TYPE_FDC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | type = "FDC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2154 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2155 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, type)) |
| 2156 | found++; |
| 2157 | |
| 2158 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2159 | if (!smsc_superio_paged(fdc_chips_paged, cfg_base, type)) |
| 2160 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | } |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2162 | if (address->type & SMSCSIO_TYPE_LPC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | type = "LPC"; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2164 | if (address->type & SMSCSIO_TYPE_FLAT) |
| 2165 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, type)) |
| 2166 | found++; |
| 2167 | |
| 2168 | if (address->type & SMSCSIO_TYPE_PAGED) |
| 2169 | if (!smsc_superio_paged(lpc_chips_paged, cfg_base, type)) |
| 2170 | found++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2171 | } |
| 2172 | address++; |
| 2173 | } |
| 2174 | return found; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2175 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | |
| 2177 | /* |
| 2178 | * Function smsc_superio_flat (chip, base, type) |
| 2179 | * |
| 2180 | * Try to get configuration of a smc SuperIO chip with flat register model |
| 2181 | * |
| 2182 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2183 | 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] | 2184 | { |
| 2185 | unsigned short firbase, sirbase; |
| 2186 | u8 mode, dma, irq; |
| 2187 | int ret = -ENODEV; |
| 2188 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2189 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2191 | if (smsc_ircc_probe(cfgbase, SMSCSIOFLAT_DEVICEID_REG, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2192 | return ret; |
| 2193 | |
| 2194 | outb(SMSCSIOFLAT_UARTMODE0C_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2195 | mode = inb(cfgbase + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2196 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2197 | /*printk(KERN_WARNING "%s(): mode: 0x%02x\n", __func__, mode);*/ |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2198 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2199 | if (!(mode & SMSCSIOFLAT_UART2MODE_VAL_IRDA)) |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2200 | IRDA_WARNING("%s(): IrDA not enabled\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2201 | |
| 2202 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2203 | sirbase = inb(cfgbase + 1) << 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2205 | /* FIR iobase */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2207 | firbase = inb(cfgbase + 1) << 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | |
| 2209 | /* DMA */ |
| 2210 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2211 | dma = inb(cfgbase + 1) & SMSCSIOFLAT_FIRDMASELECT_MASK; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2212 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2213 | /* IRQ */ |
| 2214 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, cfgbase); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2215 | irq = inb(cfgbase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2216 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2217 | IRDA_MESSAGE("%s(): fir: 0x%02x, sir: 0x%02x, dma: %02d, irq: %d, mode: 0x%02x\n", __func__, firbase, sirbase, dma, irq, mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2219 | if (firbase && smsc_ircc_open(firbase, sirbase, dma, irq) == 0) |
| 2220 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2222 | /* Exit configuration */ |
| 2223 | outb(SMSCSIO_CFGEXITKEY, cfgbase); |
| 2224 | |
| 2225 | return ret; |
| 2226 | } |
| 2227 | |
| 2228 | /* |
| 2229 | * Function smsc_superio_paged (chip, base, type) |
| 2230 | * |
| 2231 | * Try to get configuration of a smc SuperIO chip with paged register model |
| 2232 | * |
| 2233 | */ |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2234 | 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] | 2235 | { |
| 2236 | unsigned short fir_io, sir_io; |
| 2237 | int ret = -ENODEV; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2238 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2239 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2241 | if (smsc_ircc_probe(cfg_base, 0x20, chips, type) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | return ret; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2243 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2244 | /* Select logical device (UART2) */ |
| 2245 | outb(0x07, cfg_base); |
| 2246 | outb(0x05, cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2248 | /* SIR iobase */ |
| 2249 | outb(0x60, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2250 | sir_io = inb(cfg_base + 1) << 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | outb(0x61, cfg_base); |
| 2252 | sir_io |= inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2254 | /* Read FIR base */ |
| 2255 | outb(0x62, cfg_base); |
| 2256 | fir_io = inb(cfg_base + 1) << 8; |
| 2257 | outb(0x63, cfg_base); |
| 2258 | fir_io |= inb(cfg_base + 1); |
| 2259 | outb(0x2b, cfg_base); /* ??? */ |
| 2260 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2261 | if (fir_io && smsc_ircc_open(fir_io, sir_io, ircc_dma, ircc_irq) == 0) |
| 2262 | ret = 0; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2263 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | /* Exit configuration */ |
| 2265 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2266 | |
| 2267 | return ret; |
| 2268 | } |
| 2269 | |
| 2270 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2271 | static int __init smsc_access(unsigned short cfg_base, unsigned char reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2272 | { |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2273 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | |
| 2275 | outb(reg, cfg_base); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2276 | return inb(cfg_base) != reg ? -1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2277 | } |
| 2278 | |
Dmitry Torokhov | b6158d2 | 2005-09-06 15:19:20 -0700 | [diff] [blame] | 2279 | 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] | 2280 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2281 | u8 devid, xdevid, rev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2283 | IRDA_DEBUG(1, "%s\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | |
| 2285 | /* Leave configuration */ |
| 2286 | |
| 2287 | outb(SMSCSIO_CFGEXITKEY, cfg_base); |
| 2288 | |
| 2289 | if (inb(cfg_base) == SMSCSIO_CFGEXITKEY) /* not a smc superio chip */ |
| 2290 | return NULL; |
| 2291 | |
| 2292 | outb(reg, cfg_base); |
| 2293 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2294 | xdevid = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | |
| 2296 | /* Enter configuration */ |
| 2297 | |
| 2298 | outb(SMSCSIO_CFGACCESSKEY, cfg_base); |
| 2299 | |
| 2300 | #if 0 |
| 2301 | if (smsc_access(cfg_base,0x55)) /* send second key and check */ |
| 2302 | return NULL; |
| 2303 | #endif |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2304 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2305 | /* probe device ID */ |
| 2306 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2307 | if (smsc_access(cfg_base, reg)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2308 | return NULL; |
| 2309 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2310 | devid = inb(cfg_base + 1); |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2311 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2312 | if (devid == 0 || devid == 0xff) /* typical values for unused port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2313 | return NULL; |
| 2314 | |
| 2315 | /* probe revision ID */ |
| 2316 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2317 | if (smsc_access(cfg_base, reg + 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | return NULL; |
| 2319 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2320 | rev = inb(cfg_base + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2322 | if (rev >= 128) /* i think this will make no sense */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2323 | return NULL; |
| 2324 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2325 | if (devid == xdevid) /* protection against false positives */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | return NULL; |
| 2327 | |
| 2328 | /* Check for expected device ID; are there others? */ |
| 2329 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2330 | while (chip->devid != devid) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | |
| 2332 | chip++; |
| 2333 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2334 | if (chip->name == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2335 | return NULL; |
| 2336 | } |
| 2337 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2338 | IRDA_MESSAGE("found SMC SuperIO Chip (devid=0x%02x rev=%02X base=0x%04x): %s%s\n", |
| 2339 | devid, rev, cfg_base, type, chip->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2340 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2341 | if (chip->rev > rev) { |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2342 | IRDA_MESSAGE("Revision higher than expected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2343 | return NULL; |
| 2344 | } |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2345 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2346 | if (chip->flags & NoIRDA) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2347 | IRDA_MESSAGE("chipset does not support IRDA\n"); |
| 2348 | |
| 2349 | return chip; |
| 2350 | } |
| 2351 | |
| 2352 | static int __init smsc_superio_fdc(unsigned short cfg_base) |
| 2353 | { |
| 2354 | int ret = -1; |
| 2355 | |
| 2356 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2357 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2358 | __func__, cfg_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2359 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2360 | if (!smsc_superio_flat(fdc_chips_flat, cfg_base, "FDC") || |
| 2361 | !smsc_superio_paged(fdc_chips_paged, cfg_base, "FDC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2362 | ret = 0; |
| 2363 | |
| 2364 | release_region(cfg_base, 2); |
| 2365 | } |
| 2366 | |
| 2367 | return ret; |
| 2368 | } |
| 2369 | |
| 2370 | static int __init smsc_superio_lpc(unsigned short cfg_base) |
| 2371 | { |
| 2372 | int ret = -1; |
| 2373 | |
| 2374 | if (!request_region(cfg_base, 2, driver_name)) { |
| 2375 | IRDA_WARNING("%s: can't get cfg_base of 0x%03x\n", |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2376 | __func__, cfg_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2377 | } else { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2378 | if (!smsc_superio_flat(lpc_chips_flat, cfg_base, "LPC") || |
| 2379 | !smsc_superio_paged(lpc_chips_paged, cfg_base, "LPC")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | ret = 0; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | release_region(cfg_base, 2); |
| 2383 | } |
| 2384 | return ret; |
| 2385 | } |
| 2386 | |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2387 | /* |
| 2388 | * Look for some specific subsystem setups that need |
| 2389 | * pre-configuration not properly done by the BIOS (especially laptops) |
| 2390 | * This code is based in part on smcinit.c, tosh1800-smcinit.c |
| 2391 | * and tosh2450-smcinit.c. The table lists the device entries |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2392 | * for ISA bridges with an LPC (Low Pin Count) controller which |
| 2393 | * handles the communication with the SMSC device. After the LPC |
| 2394 | * controller is initialized through PCI, the SMSC device is initialized |
| 2395 | * through a dedicated port in the ISA port-mapped I/O area, this latter |
| 2396 | * area is used to configure the SMSC device with default |
| 2397 | * SIR and FIR I/O ports, DMA and IRQ. Different vendors have |
| 2398 | * used different sets of parameters and different control port |
| 2399 | * addresses making a subsystem device table necessary. |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2400 | */ |
| 2401 | #ifdef CONFIG_PCI |
| 2402 | #define PCIID_VENDOR_INTEL 0x8086 |
| 2403 | #define PCIID_VENDOR_ALI 0x10b9 |
Dmitry Torokhov | c5d965c | 2006-07-06 23:58:27 -0700 | [diff] [blame] | 2404 | static struct smsc_ircc_subsystem_configuration subsystem_configurations[] __initdata = { |
Linus Walleij (LD/EAB | 895de09 | 2006-09-27 22:49:23 -0700 | [diff] [blame] | 2405 | /* |
| 2406 | * Subsystems needing entries: |
| 2407 | * 0x10b9:0x1533 0x103c:0x0850 HP nx9010 family |
| 2408 | * 0x10b9:0x1533 0x0e11:0x005a Compaq nc4000 family |
| 2409 | * 0x8086:0x24cc 0x0e11:0x002a HP nx9000 family |
| 2410 | */ |
| 2411 | { |
| 2412 | /* Guessed entry */ |
| 2413 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2414 | .device = 0x24cc, |
| 2415 | .subvendor = 0x103c, |
| 2416 | .subdevice = 0x08bc, |
| 2417 | .sir_io = 0x02f8, |
| 2418 | .fir_io = 0x0130, |
| 2419 | .fir_irq = 0x05, |
| 2420 | .fir_dma = 0x03, |
| 2421 | .cfg_base = 0x004e, |
| 2422 | .preconfigure = preconfigure_through_82801, |
| 2423 | .name = "HP nx5000 family", |
| 2424 | }, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2425 | { |
| 2426 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2427 | .device = 0x24cc, |
| 2428 | .subvendor = 0x103c, |
| 2429 | .subdevice = 0x088c, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2430 | /* Quite certain these are the same for nc8000 as for nc6000 */ |
| 2431 | .sir_io = 0x02f8, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2432 | .fir_io = 0x0130, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2433 | .fir_irq = 0x05, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2434 | .fir_dma = 0x03, |
| 2435 | .cfg_base = 0x004e, |
| 2436 | .preconfigure = preconfigure_through_82801, |
Linus Walleij (LD/EAB | 895de09 | 2006-09-27 22:49:23 -0700 | [diff] [blame] | 2437 | .name = "HP nc8000 family", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2438 | }, |
| 2439 | { |
| 2440 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2441 | .device = 0x24cc, |
| 2442 | .subvendor = 0x103c, |
| 2443 | .subdevice = 0x0890, |
| 2444 | .sir_io = 0x02f8, |
| 2445 | .fir_io = 0x0130, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2446 | .fir_irq = 0x05, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2447 | .fir_dma = 0x03, |
| 2448 | .cfg_base = 0x004e, |
| 2449 | .preconfigure = preconfigure_through_82801, |
Linus Walleij (LD/EAB | 895de09 | 2006-09-27 22:49:23 -0700 | [diff] [blame] | 2450 | .name = "HP nc6000 family", |
| 2451 | }, |
| 2452 | { |
| 2453 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801DBM LPC bridge */ |
| 2454 | .device = 0x24cc, |
| 2455 | .subvendor = 0x0e11, |
| 2456 | .subdevice = 0x0860, |
| 2457 | /* I assume these are the same for x1000 as for the others */ |
| 2458 | .sir_io = 0x02e8, |
| 2459 | .fir_io = 0x02f8, |
| 2460 | .fir_irq = 0x07, |
| 2461 | .fir_dma = 0x03, |
| 2462 | .cfg_base = 0x002e, |
| 2463 | .preconfigure = preconfigure_through_82801, |
| 2464 | .name = "Compaq x1000 family", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2465 | }, |
| 2466 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2467 | /* Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge */ |
| 2468 | .vendor = PCIID_VENDOR_INTEL, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2469 | .device = 0x24c0, |
| 2470 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2471 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2472 | .sir_io = 0x03f8, |
| 2473 | .fir_io = 0x0130, |
| 2474 | .fir_irq = 0x07, |
| 2475 | .fir_dma = 0x01, |
| 2476 | .cfg_base = 0x002e, |
| 2477 | .preconfigure = preconfigure_through_82801, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2478 | .name = "Toshiba laptop with Intel 82801DB/DBL LPC bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2479 | }, |
| 2480 | { |
| 2481 | .vendor = PCIID_VENDOR_INTEL, /* Intel 82801CAM ISA bridge */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2482 | .device = 0x248c, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2483 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2484 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2485 | .sir_io = 0x03f8, |
| 2486 | .fir_io = 0x0130, |
| 2487 | .fir_irq = 0x03, |
| 2488 | .fir_dma = 0x03, |
| 2489 | .cfg_base = 0x002e, |
| 2490 | .preconfigure = preconfigure_through_82801, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2491 | .name = "Toshiba laptop with Intel 82801CAM ISA bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2492 | }, |
| 2493 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2494 | /* 82801DBM (ICH4-M) LPC Interface Bridge */ |
| 2495 | .vendor = PCIID_VENDOR_INTEL, |
| 2496 | .device = 0x24cc, |
| 2497 | .subvendor = 0x1179, |
| 2498 | .subdevice = 0xffff, /* 0xffff is "any" */ |
| 2499 | .sir_io = 0x03f8, |
| 2500 | .fir_io = 0x0130, |
| 2501 | .fir_irq = 0x03, |
| 2502 | .fir_dma = 0x03, |
| 2503 | .cfg_base = 0x002e, |
| 2504 | .preconfigure = preconfigure_through_82801, |
| 2505 | .name = "Toshiba laptop with Intel 8281DBM LPC bridge", |
| 2506 | }, |
| 2507 | { |
| 2508 | /* ALi M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] */ |
| 2509 | .vendor = PCIID_VENDOR_ALI, |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2510 | .device = 0x1533, |
| 2511 | .subvendor = 0x1179, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2512 | .subdevice = 0xffff, /* 0xffff is "any" */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2513 | .sir_io = 0x02e8, |
| 2514 | .fir_io = 0x02f8, |
| 2515 | .fir_irq = 0x07, |
| 2516 | .fir_dma = 0x03, |
| 2517 | .cfg_base = 0x002e, |
| 2518 | .preconfigure = preconfigure_through_ali, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2519 | .name = "Toshiba laptop with ALi ISA bridge", |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2520 | }, |
| 2521 | { } // Terminator |
| 2522 | }; |
| 2523 | |
| 2524 | |
| 2525 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2526 | * This sets up the basic SMSC parameters |
| 2527 | * (FIR port, SIR port, FIR DMA, FIR IRQ) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2528 | * through the chip configuration port. |
| 2529 | */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2530 | static int __init preconfigure_smsc_chip(struct |
| 2531 | smsc_ircc_subsystem_configuration |
| 2532 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2533 | { |
| 2534 | unsigned short iobase = conf->cfg_base; |
| 2535 | unsigned char tmpbyte; |
| 2536 | |
| 2537 | outb(LPC47N227_CFGACCESSKEY, iobase); // enter configuration state |
| 2538 | outb(SMSCSIOFLAT_DEVICEID_REG, iobase); // set for device ID |
| 2539 | tmpbyte = inb(iobase +1); // Read device ID |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2540 | IRDA_DEBUG(0, |
| 2541 | "Detected Chip id: 0x%02x, setting up registers...\n", |
| 2542 | tmpbyte); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2543 | |
| 2544 | /* Disable UART1 and set up SIR I/O port */ |
| 2545 | outb(0x24, iobase); // select CR24 - UART1 base addr |
| 2546 | outb(0x00, iobase + 1); // disable UART1 |
| 2547 | outb(SMSCSIOFLAT_UART2BASEADDR_REG, iobase); // select CR25 - UART2 base addr |
| 2548 | outb( (conf->sir_io >> 2), iobase + 1); // bits 2-9 of 0x3f8 |
| 2549 | tmpbyte = inb(iobase + 1); |
| 2550 | if (tmpbyte != (conf->sir_io >> 2) ) { |
| 2551 | IRDA_WARNING("ERROR: could not configure SIR ioport.\n"); |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2552 | IRDA_WARNING("Try to supply ircc_cfg argument.\n"); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2553 | return -ENXIO; |
| 2554 | } |
| 2555 | |
| 2556 | /* Set up FIR IRQ channel for UART2 */ |
| 2557 | outb(SMSCSIOFLAT_UARTIRQSELECT_REG, iobase); // select CR28 - UART1,2 IRQ select |
| 2558 | tmpbyte = inb(iobase + 1); |
| 2559 | tmpbyte &= SMSCSIOFLAT_UART1IRQSELECT_MASK; // Do not touch the UART1 portion |
| 2560 | tmpbyte |= (conf->fir_irq & SMSCSIOFLAT_UART2IRQSELECT_MASK); |
| 2561 | outb(tmpbyte, iobase + 1); |
| 2562 | tmpbyte = inb(iobase + 1) & SMSCSIOFLAT_UART2IRQSELECT_MASK; |
| 2563 | if (tmpbyte != conf->fir_irq) { |
| 2564 | IRDA_WARNING("ERROR: could not configure FIR IRQ channel.\n"); |
| 2565 | return -ENXIO; |
| 2566 | } |
| 2567 | |
| 2568 | /* Set up FIR I/O port */ |
| 2569 | outb(SMSCSIOFLAT_FIRBASEADDR_REG, iobase); // CR2B - SCE (FIR) base addr |
| 2570 | outb((conf->fir_io >> 3), iobase + 1); |
| 2571 | tmpbyte = inb(iobase + 1); |
| 2572 | if (tmpbyte != (conf->fir_io >> 3) ) { |
| 2573 | IRDA_WARNING("ERROR: could not configure FIR I/O port.\n"); |
| 2574 | return -ENXIO; |
| 2575 | } |
| 2576 | |
| 2577 | /* Set up FIR DMA channel */ |
| 2578 | outb(SMSCSIOFLAT_FIRDMASELECT_REG, iobase); // CR2C - SCE (FIR) DMA select |
| 2579 | outb((conf->fir_dma & LPC47N227_FIRDMASELECT_MASK), iobase + 1); // DMA |
| 2580 | tmpbyte = inb(iobase + 1) & LPC47N227_FIRDMASELECT_MASK; |
| 2581 | if (tmpbyte != (conf->fir_dma & LPC47N227_FIRDMASELECT_MASK)) { |
| 2582 | IRDA_WARNING("ERROR: could not configure FIR DMA channel.\n"); |
| 2583 | return -ENXIO; |
| 2584 | } |
| 2585 | |
| 2586 | outb(SMSCSIOFLAT_UARTMODE0C_REG, iobase); // CR0C - UART mode |
| 2587 | tmpbyte = inb(iobase + 1); |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2588 | tmpbyte &= ~SMSCSIOFLAT_UART2MODE_MASK | |
| 2589 | SMSCSIOFLAT_UART2MODE_VAL_IRDA; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2590 | outb(tmpbyte, iobase + 1); // enable IrDA (HPSIR) mode, high speed |
| 2591 | |
| 2592 | outb(LPC47N227_APMBOOTDRIVE_REG, iobase); // CR07 - Auto Pwr Mgt/boot drive sel |
| 2593 | tmpbyte = inb(iobase + 1); |
| 2594 | outb(tmpbyte | LPC47N227_UART2AUTOPWRDOWN_MASK, iobase + 1); // enable UART2 autopower down |
| 2595 | |
| 2596 | /* This one was not part of tosh1800 */ |
| 2597 | outb(0x0a, iobase); // CR0a - ecp fifo / ir mux |
| 2598 | tmpbyte = inb(iobase + 1); |
| 2599 | outb(tmpbyte | 0x40, iobase + 1); // send active device to ir port |
| 2600 | |
| 2601 | outb(LPC47N227_UART12POWER_REG, iobase); // CR02 - UART 1,2 power |
| 2602 | tmpbyte = inb(iobase + 1); |
| 2603 | outb(tmpbyte | LPC47N227_UART2POWERDOWN_MASK, iobase + 1); // UART2 power up mode, UART1 power down |
| 2604 | |
| 2605 | outb(LPC47N227_FDCPOWERVALIDCONF_REG, iobase); // CR00 - FDC Power/valid config cycle |
| 2606 | tmpbyte = inb(iobase + 1); |
| 2607 | outb(tmpbyte | LPC47N227_VALID_MASK, iobase + 1); // valid config cycle done |
| 2608 | |
| 2609 | outb(LPC47N227_CFGEXITKEY, iobase); // Exit configuration |
| 2610 | |
| 2611 | return 0; |
| 2612 | } |
| 2613 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2614 | /* 82801CAM generic registers */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2615 | #define VID 0x00 |
| 2616 | #define DID 0x02 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2617 | #define PIRQ_A_D_ROUT 0x60 |
| 2618 | #define SIRQ_CNTL 0x64 |
| 2619 | #define PIRQ_E_H_ROUT 0x68 |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2620 | #define PCI_DMA_C 0x90 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2621 | /* LPC-specific registers */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2622 | #define COM_DEC 0xe0 |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2623 | #define GEN1_DEC 0xe4 |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2624 | #define LPC_EN 0xe6 |
| 2625 | #define GEN2_DEC 0xec |
| 2626 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2627 | * Sets up the I/O range using the 82801CAM ISA bridge, 82801DBM LPC bridge |
| 2628 | * or Intel 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge. |
| 2629 | * They all work the same way! |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2630 | */ |
| 2631 | static int __init preconfigure_through_82801(struct pci_dev *dev, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2632 | struct |
| 2633 | smsc_ircc_subsystem_configuration |
| 2634 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2635 | { |
| 2636 | unsigned short tmpword; |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2637 | unsigned char tmpbyte; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2638 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2639 | IRDA_MESSAGE("Setting up Intel 82801 controller and SMSC device\n"); |
| 2640 | /* |
| 2641 | * Select the range for the COMA COM port (SIR) |
| 2642 | * Register COM_DEC: |
| 2643 | * Bit 7: reserved |
| 2644 | * Bit 6-4, COMB decode range |
| 2645 | * Bit 3: reserved |
| 2646 | * Bit 2-0, COMA decode range |
| 2647 | * |
| 2648 | * Decode ranges: |
| 2649 | * 000 = 0x3f8-0x3ff (COM1) |
| 2650 | * 001 = 0x2f8-0x2ff (COM2) |
| 2651 | * 010 = 0x220-0x227 |
| 2652 | * 011 = 0x228-0x22f |
| 2653 | * 100 = 0x238-0x23f |
| 2654 | * 101 = 0x2e8-0x2ef (COM4) |
| 2655 | * 110 = 0x338-0x33f |
| 2656 | * 111 = 0x3e8-0x3ef (COM3) |
| 2657 | */ |
| 2658 | pci_read_config_byte(dev, COM_DEC, &tmpbyte); |
| 2659 | tmpbyte &= 0xf8; /* mask COMA bits */ |
| 2660 | switch(conf->sir_io) { |
| 2661 | case 0x3f8: |
| 2662 | tmpbyte |= 0x00; |
| 2663 | break; |
| 2664 | case 0x2f8: |
| 2665 | tmpbyte |= 0x01; |
| 2666 | break; |
| 2667 | case 0x220: |
| 2668 | tmpbyte |= 0x02; |
| 2669 | break; |
| 2670 | case 0x228: |
| 2671 | tmpbyte |= 0x03; |
| 2672 | break; |
| 2673 | case 0x238: |
| 2674 | tmpbyte |= 0x04; |
| 2675 | break; |
| 2676 | case 0x2e8: |
| 2677 | tmpbyte |= 0x05; |
| 2678 | break; |
| 2679 | case 0x338: |
| 2680 | tmpbyte |= 0x06; |
| 2681 | break; |
| 2682 | case 0x3e8: |
| 2683 | tmpbyte |= 0x07; |
| 2684 | break; |
| 2685 | default: |
| 2686 | tmpbyte |= 0x01; /* COM2 default */ |
| 2687 | } |
| 2688 | IRDA_DEBUG(1, "COM_DEC (write): 0x%02x\n", tmpbyte); |
| 2689 | pci_write_config_byte(dev, COM_DEC, tmpbyte); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2690 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2691 | /* Enable Low Pin Count interface */ |
| 2692 | pci_read_config_word(dev, LPC_EN, &tmpword); |
| 2693 | /* These seem to be set up at all times, |
| 2694 | * just make sure it is properly set. |
| 2695 | */ |
| 2696 | switch(conf->cfg_base) { |
| 2697 | case 0x04e: |
| 2698 | tmpword |= 0x2000; |
| 2699 | break; |
| 2700 | case 0x02e: |
| 2701 | tmpword |= 0x1000; |
| 2702 | break; |
| 2703 | case 0x062: |
| 2704 | tmpword |= 0x0800; |
| 2705 | break; |
| 2706 | case 0x060: |
| 2707 | tmpword |= 0x0400; |
| 2708 | break; |
| 2709 | default: |
| 2710 | IRDA_WARNING("Uncommon I/O base address: 0x%04x\n", |
| 2711 | conf->cfg_base); |
| 2712 | break; |
| 2713 | } |
| 2714 | tmpword &= 0xfffd; /* disable LPC COMB */ |
| 2715 | tmpword |= 0x0001; /* set bit 0 : enable LPC COMA addr range (GEN2) */ |
| 2716 | IRDA_DEBUG(1, "LPC_EN (write): 0x%04x\n", tmpword); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2717 | pci_write_config_word(dev, LPC_EN, tmpword); |
| 2718 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2719 | /* |
| 2720 | * Configure LPC DMA channel |
| 2721 | * PCI_DMA_C bits: |
| 2722 | * Bit 15-14: DMA channel 7 select |
| 2723 | * Bit 13-12: DMA channel 6 select |
| 2724 | * Bit 11-10: DMA channel 5 select |
| 2725 | * Bit 9-8: Reserved |
| 2726 | * Bit 7-6: DMA channel 3 select |
| 2727 | * Bit 5-4: DMA channel 2 select |
| 2728 | * Bit 3-2: DMA channel 1 select |
| 2729 | * Bit 1-0: DMA channel 0 select |
| 2730 | * 00 = Reserved value |
| 2731 | * 01 = PC/PCI DMA |
| 2732 | * 10 = Reserved value |
| 2733 | * 11 = LPC I/F DMA |
| 2734 | */ |
| 2735 | pci_read_config_word(dev, PCI_DMA_C, &tmpword); |
| 2736 | switch(conf->fir_dma) { |
| 2737 | case 0x07: |
| 2738 | tmpword |= 0xc000; |
| 2739 | break; |
| 2740 | case 0x06: |
| 2741 | tmpword |= 0x3000; |
| 2742 | break; |
| 2743 | case 0x05: |
| 2744 | tmpword |= 0x0c00; |
| 2745 | break; |
| 2746 | case 0x03: |
| 2747 | tmpword |= 0x00c0; |
| 2748 | break; |
| 2749 | case 0x02: |
| 2750 | tmpword |= 0x0030; |
| 2751 | break; |
| 2752 | case 0x01: |
| 2753 | tmpword |= 0x000c; |
| 2754 | break; |
| 2755 | case 0x00: |
| 2756 | tmpword |= 0x0003; |
| 2757 | break; |
| 2758 | default: |
| 2759 | break; /* do not change settings */ |
| 2760 | } |
| 2761 | IRDA_DEBUG(1, "PCI_DMA_C (write): 0x%04x\n", tmpword); |
| 2762 | pci_write_config_word(dev, PCI_DMA_C, tmpword); |
| 2763 | |
| 2764 | /* |
| 2765 | * GEN2_DEC bits: |
| 2766 | * Bit 15-4: Generic I/O range |
| 2767 | * Bit 3-1: reserved (read as 0) |
| 2768 | * Bit 0: enable GEN2 range on LPC I/F |
| 2769 | */ |
| 2770 | tmpword = conf->fir_io & 0xfff8; |
| 2771 | tmpword |= 0x0001; |
| 2772 | IRDA_DEBUG(1, "GEN2_DEC (write): 0x%04x\n", tmpword); |
| 2773 | pci_write_config_word(dev, GEN2_DEC, tmpword); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2774 | |
| 2775 | /* Pre-configure chip */ |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2776 | return preconfigure_smsc_chip(conf); |
| 2777 | } |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2778 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2779 | /* |
| 2780 | * Pre-configure a certain port on the ALi 1533 bridge. |
| 2781 | * This is based on reverse-engineering since ALi does not |
| 2782 | * provide any data sheet for the 1533 chip. |
| 2783 | */ |
| 2784 | static void __init preconfigure_ali_port(struct pci_dev *dev, |
| 2785 | unsigned short port) |
| 2786 | { |
| 2787 | unsigned char reg; |
| 2788 | /* These bits obviously control the different ports */ |
| 2789 | unsigned char mask; |
| 2790 | unsigned char tmpbyte; |
| 2791 | |
| 2792 | switch(port) { |
| 2793 | case 0x0130: |
| 2794 | case 0x0178: |
| 2795 | reg = 0xb0; |
| 2796 | mask = 0x80; |
| 2797 | break; |
| 2798 | case 0x03f8: |
| 2799 | reg = 0xb4; |
| 2800 | mask = 0x80; |
| 2801 | break; |
| 2802 | case 0x02f8: |
| 2803 | reg = 0xb4; |
| 2804 | mask = 0x30; |
| 2805 | break; |
| 2806 | case 0x02e8: |
| 2807 | reg = 0xb4; |
| 2808 | mask = 0x08; |
| 2809 | break; |
| 2810 | default: |
| 2811 | IRDA_ERROR("Failed to configure unsupported port on ALi 1533 bridge: 0x%04x\n", port); |
| 2812 | return; |
| 2813 | } |
| 2814 | |
| 2815 | pci_read_config_byte(dev, reg, &tmpbyte); |
| 2816 | /* Turn on the right bits */ |
| 2817 | tmpbyte |= mask; |
| 2818 | pci_write_config_byte(dev, reg, tmpbyte); |
| 2819 | IRDA_MESSAGE("Activated ALi 1533 ISA bridge port 0x%04x.\n", port); |
| 2820 | return; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2821 | } |
| 2822 | |
| 2823 | static int __init preconfigure_through_ali(struct pci_dev *dev, |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2824 | struct |
| 2825 | smsc_ircc_subsystem_configuration |
| 2826 | *conf) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2827 | { |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2828 | /* Configure the two ports on the ALi 1533 */ |
| 2829 | preconfigure_ali_port(dev, conf->sir_io); |
| 2830 | preconfigure_ali_port(dev, conf->fir_io); |
| 2831 | |
| 2832 | /* Pre-configure chip */ |
| 2833 | return preconfigure_smsc_chip(conf); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2834 | } |
| 2835 | |
| 2836 | static int __init smsc_ircc_preconfigure_subsystems(unsigned short ircc_cfg, |
| 2837 | unsigned short ircc_fir, |
| 2838 | unsigned short ircc_sir, |
| 2839 | unsigned char ircc_dma, |
| 2840 | unsigned char ircc_irq) |
| 2841 | { |
| 2842 | struct pci_dev *dev = NULL; |
| 2843 | unsigned short ss_vendor = 0x0000; |
| 2844 | unsigned short ss_device = 0x0000; |
| 2845 | int ret = 0; |
| 2846 | |
| 2847 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2848 | |
| 2849 | while (dev != NULL) { |
| 2850 | struct smsc_ircc_subsystem_configuration *conf; |
| 2851 | |
| 2852 | /* |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2853 | * Cache the subsystem vendor/device: |
| 2854 | * some manufacturers fail to set this for all components, |
| 2855 | * so we save it in case there is just 0x0000 0x0000 on the |
| 2856 | * device we want to check. |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2857 | */ |
| 2858 | if (dev->subsystem_vendor != 0x0000U) { |
| 2859 | ss_vendor = dev->subsystem_vendor; |
| 2860 | ss_device = dev->subsystem_device; |
| 2861 | } |
| 2862 | conf = subsystem_configurations; |
| 2863 | for( ; conf->subvendor; conf++) { |
| 2864 | if(conf->vendor == dev->vendor && |
| 2865 | conf->device == dev->device && |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2866 | conf->subvendor == ss_vendor && |
| 2867 | /* Sometimes these are cached values */ |
| 2868 | (conf->subdevice == ss_device || |
| 2869 | conf->subdevice == 0xffff)) { |
| 2870 | struct smsc_ircc_subsystem_configuration |
| 2871 | tmpconf; |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2872 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2873 | memcpy(&tmpconf, conf, |
| 2874 | sizeof(struct smsc_ircc_subsystem_configuration)); |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2875 | |
Linus Walleij | 08d0999 | 2006-04-14 16:03:33 -0700 | [diff] [blame] | 2876 | /* |
| 2877 | * Override the default values with anything |
| 2878 | * passed in as parameter |
| 2879 | */ |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2880 | if (ircc_cfg != 0) |
| 2881 | tmpconf.cfg_base = ircc_cfg; |
| 2882 | if (ircc_fir != 0) |
| 2883 | tmpconf.fir_io = ircc_fir; |
| 2884 | if (ircc_sir != 0) |
| 2885 | tmpconf.sir_io = ircc_sir; |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 2886 | if (ircc_dma != DMA_INVAL) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2887 | tmpconf.fir_dma = ircc_dma; |
Bjorn Helgaas | 916f11c | 2007-05-08 00:36:02 -0700 | [diff] [blame] | 2888 | if (ircc_irq != IRQ_INVAL) |
Linus Walleij | c1e14a6 | 2006-04-05 22:33:59 -0700 | [diff] [blame] | 2889 | tmpconf.fir_irq = ircc_irq; |
| 2890 | |
| 2891 | IRDA_MESSAGE("Detected unconfigured %s SMSC IrDA chip, pre-configuring device.\n", conf->name); |
| 2892 | if (conf->preconfigure) |
| 2893 | ret = conf->preconfigure(dev, &tmpconf); |
| 2894 | else |
| 2895 | ret = -ENODEV; |
| 2896 | } |
| 2897 | } |
| 2898 | dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev); |
| 2899 | } |
| 2900 | |
| 2901 | return ret; |
| 2902 | } |
| 2903 | #endif // CONFIG_PCI |
| 2904 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | /************************************************ |
| 2906 | * |
| 2907 | * Transceivers specific functions |
| 2908 | * |
| 2909 | ************************************************/ |
| 2910 | |
| 2911 | |
| 2912 | /* |
| 2913 | * Function smsc_ircc_set_transceiver_smsc_ircc_atc(fir_base, speed) |
| 2914 | * |
| 2915 | * Program transceiver through smsc-ircc ATC circuitry |
| 2916 | * |
| 2917 | */ |
| 2918 | |
| 2919 | static void smsc_ircc_set_transceiver_smsc_ircc_atc(int fir_base, u32 speed) |
| 2920 | { |
| 2921 | unsigned long jiffies_now, jiffies_timeout; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2922 | u8 val; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2923 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2924 | jiffies_now = jiffies; |
| 2925 | jiffies_timeout = jiffies + SMSC_IRCC2_ATC_PROGRAMMING_TIMEOUT_JIFFIES; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2926 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2927 | /* ATC */ |
| 2928 | register_bank(fir_base, 4); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2929 | outb((inb(fir_base + IRCC_ATC) & IRCC_ATC_MASK) | IRCC_ATC_nPROGREADY|IRCC_ATC_ENABLE, |
| 2930 | fir_base + IRCC_ATC); |
| 2931 | |
| 2932 | while ((val = (inb(fir_base + IRCC_ATC) & IRCC_ATC_nPROGREADY)) && |
| 2933 | !time_after(jiffies, jiffies_timeout)) |
| 2934 | /* empty */; |
| 2935 | |
| 2936 | if (val) |
Harvey Harrison | a97a6f1 | 2008-07-30 17:20:18 -0700 | [diff] [blame] | 2937 | IRDA_WARNING("%s(): ATC: 0x%02x\n", __func__, |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2938 | inb(fir_base + IRCC_ATC)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2939 | } |
| 2940 | |
| 2941 | /* |
| 2942 | * Function smsc_ircc_probe_transceiver_smsc_ircc_atc(fir_base) |
| 2943 | * |
| 2944 | * Probe transceiver smsc-ircc ATC circuitry |
| 2945 | * |
| 2946 | */ |
| 2947 | |
| 2948 | static int smsc_ircc_probe_transceiver_smsc_ircc_atc(int fir_base) |
| 2949 | { |
| 2950 | return 0; |
| 2951 | } |
| 2952 | |
| 2953 | /* |
| 2954 | * Function smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(self, speed) |
| 2955 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2956 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | * |
| 2958 | */ |
| 2959 | |
| 2960 | static void smsc_ircc_set_transceiver_smsc_ircc_fast_pin_select(int fir_base, u32 speed) |
| 2961 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2962 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2963 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2964 | switch (speed) { |
| 2965 | default: |
| 2966 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2967 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2968 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2969 | case 1152000 : |
| 2970 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2971 | fast_mode = IRCC_LCR_A_FAST; |
| 2972 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2973 | } |
| 2974 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2975 | 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] | 2976 | } |
| 2977 | |
| 2978 | /* |
| 2979 | * Function smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(fir_base) |
| 2980 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2981 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2982 | * |
| 2983 | */ |
| 2984 | |
| 2985 | static int smsc_ircc_probe_transceiver_smsc_ircc_fast_pin_select(int fir_base) |
| 2986 | { |
| 2987 | return 0; |
| 2988 | } |
| 2989 | |
| 2990 | /* |
| 2991 | * Function smsc_ircc_set_transceiver_toshiba_sat1800(fir_base, speed) |
| 2992 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 2993 | * Set transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | * |
| 2995 | */ |
| 2996 | |
| 2997 | static void smsc_ircc_set_transceiver_toshiba_sat1800(int fir_base, u32 speed) |
| 2998 | { |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 2999 | u8 fast_mode; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3000 | |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 3001 | switch (speed) { |
| 3002 | default: |
| 3003 | case 576000 : |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3004 | fast_mode = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3005 | break; |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 3006 | case 1152000 : |
| 3007 | case 4000000 : |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3008 | fast_mode = /*IRCC_LCR_A_FAST |*/ IRCC_LCR_A_GP_DATA; |
| 3009 | break; |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3010 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3011 | } |
| 3012 | /* This causes an interrupt */ |
| 3013 | register_bank(fir_base, 0); |
Dmitry Torokhov | 98b7777 | 2005-09-06 15:19:19 -0700 | [diff] [blame] | 3014 | 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] | 3015 | } |
| 3016 | |
| 3017 | /* |
| 3018 | * Function smsc_ircc_probe_transceiver_toshiba_sat1800(fir_base) |
| 3019 | * |
Dmitry Torokhov | 527b6af | 2005-09-06 15:19:17 -0700 | [diff] [blame] | 3020 | * Probe transceiver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3021 | * |
| 3022 | */ |
| 3023 | |
| 3024 | static int smsc_ircc_probe_transceiver_toshiba_sat1800(int fir_base) |
| 3025 | { |
| 3026 | return 0; |
| 3027 | } |
| 3028 | |
| 3029 | |
| 3030 | module_init(smsc_ircc_init); |
| 3031 | module_exit(smsc_ircc_cleanup); |