Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family |
| 3 | * of PCI-SCSI IO processors. |
| 4 | * |
| 5 | * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> |
| 6 | * |
| 7 | * This driver is derived from the Linux sym53c8xx driver. |
| 8 | * Copyright (C) 1998-2000 Gerard Roudier |
| 9 | * |
| 10 | * The sym53c8xx driver is derived from the ncr53c8xx driver that had been |
| 11 | * a port of the FreeBSD ncr driver to Linux-1.2.13. |
| 12 | * |
| 13 | * The original ncr driver has been written for 386bsd and FreeBSD by |
| 14 | * Wolfgang Stanglmeier <wolf@cologne.de> |
| 15 | * Stefan Esser <se@mi.Uni-Koeln.de> |
| 16 | * Copyright (C) 1994 Wolfgang Stanglmeier |
| 17 | * |
| 18 | * Other major contributions: |
| 19 | * |
| 20 | * NVRAM detection and reading. |
| 21 | * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> |
| 22 | * |
| 23 | *----------------------------------------------------------------------------- |
| 24 | * |
| 25 | * This program is free software; you can redistribute it and/or modify |
| 26 | * it under the terms of the GNU General Public License as published by |
| 27 | * the Free Software Foundation; either version 2 of the License, or |
| 28 | * (at your option) any later version. |
| 29 | * |
| 30 | * This program is distributed in the hope that it will be useful, |
| 31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 33 | * GNU General Public License for more details. |
| 34 | * |
| 35 | * You should have received a copy of the GNU General Public License |
| 36 | * along with this program; if not, write to the Free Software |
| 37 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 38 | */ |
| 39 | |
| 40 | #ifndef SYM_GLUE_H |
| 41 | #define SYM_GLUE_H |
| 42 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <linux/delay.h> |
| 44 | #include <linux/ioport.h> |
| 45 | #include <linux/pci.h> |
| 46 | #include <linux/string.h> |
| 47 | #include <linux/timer.h> |
| 48 | #include <linux/types.h> |
| 49 | |
| 50 | #include <asm/io.h> |
| 51 | #ifdef __sparc__ |
| 52 | # include <asm/irq.h> |
| 53 | #endif |
| 54 | |
| 55 | #include <scsi/scsi.h> |
| 56 | #include <scsi/scsi_cmnd.h> |
| 57 | #include <scsi/scsi_device.h> |
| 58 | #include <scsi/scsi_transport_spi.h> |
| 59 | #include <scsi/scsi_host.h> |
| 60 | |
| 61 | #include "sym53c8xx.h" |
| 62 | #include "sym_defs.h" |
| 63 | #include "sym_misc.h" |
| 64 | |
| 65 | /* |
| 66 | * Configuration addendum for Linux. |
| 67 | */ |
| 68 | #define SYM_CONF_TIMER_INTERVAL ((HZ+1)/2) |
| 69 | |
Matthew Wilcox | 3bea15a | 2006-03-28 11:03:44 -0500 | [diff] [blame] | 70 | #undef SYM_OPT_HANDLE_DEVICE_QUEUEING |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #define SYM_OPT_LIMIT_COMMAND_REORDERING |
| 72 | |
| 73 | /* |
| 74 | * Print a message with severity. |
| 75 | */ |
| 76 | #define printf_emerg(args...) printk(KERN_EMERG args) |
| 77 | #define printf_alert(args...) printk(KERN_ALERT args) |
| 78 | #define printf_crit(args...) printk(KERN_CRIT args) |
| 79 | #define printf_err(args...) printk(KERN_ERR args) |
| 80 | #define printf_warning(args...) printk(KERN_WARNING args) |
| 81 | #define printf_notice(args...) printk(KERN_NOTICE args) |
| 82 | #define printf_info(args...) printk(KERN_INFO args) |
| 83 | #define printf_debug(args...) printk(KERN_DEBUG args) |
| 84 | #define printf(args...) printk(args) |
| 85 | |
| 86 | /* |
| 87 | * A 'read barrier' flushes any data that have been prefetched |
| 88 | * by the processor due to out of order execution. Such a barrier |
| 89 | * must notably be inserted prior to looking at data that have |
| 90 | * been DMAed, assuming that program does memory READs in proper |
| 91 | * order and that the device ensured proper ordering of WRITEs. |
| 92 | * |
| 93 | * A 'write barrier' prevents any previous WRITEs to pass further |
| 94 | * WRITEs. Such barriers must be inserted each time another agent |
| 95 | * relies on ordering of WRITEs. |
| 96 | * |
| 97 | * Note that, due to posting of PCI memory writes, we also must |
| 98 | * insert dummy PCI read transactions when some ordering involving |
| 99 | * both directions over the PCI does matter. PCI transactions are |
| 100 | * fully ordered in each direction. |
| 101 | */ |
| 102 | |
| 103 | #define MEMORY_READ_BARRIER() rmb() |
| 104 | #define MEMORY_WRITE_BARRIER() wmb() |
| 105 | |
| 106 | /* |
| 107 | * IO functions definition for big/little endian CPU support. |
| 108 | * For now, PCI chips are only supported in little endian addressing mode, |
| 109 | */ |
| 110 | |
| 111 | #ifdef __BIG_ENDIAN |
| 112 | |
| 113 | #define readw_l2b readw |
| 114 | #define readl_l2b readl |
| 115 | #define writew_b2l writew |
| 116 | #define writel_b2l writel |
| 117 | |
| 118 | #else /* little endian */ |
| 119 | |
| 120 | #define readw_raw readw |
| 121 | #define readl_raw readl |
| 122 | #define writew_raw writew |
| 123 | #define writel_raw writel |
| 124 | |
| 125 | #endif /* endian */ |
| 126 | |
| 127 | #ifdef SYM_CONF_CHIP_BIG_ENDIAN |
| 128 | #error "Chips in BIG ENDIAN addressing mode are not (yet) supported" |
| 129 | #endif |
| 130 | |
| 131 | /* |
| 132 | * If the CPU and the chip use same endian-ness addressing, |
| 133 | * no byte reordering is needed for script patching. |
| 134 | * Macro cpu_to_scr() is to be used for script patching. |
| 135 | * Macro scr_to_cpu() is to be used for getting a DWORD |
| 136 | * from the script. |
| 137 | */ |
| 138 | |
| 139 | #define cpu_to_scr(dw) cpu_to_le32(dw) |
| 140 | #define scr_to_cpu(dw) le32_to_cpu(dw) |
| 141 | |
| 142 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | * These ones are used as return code from |
| 144 | * error recovery handlers under Linux. |
| 145 | */ |
| 146 | #define SCSI_SUCCESS SUCCESS |
| 147 | #define SCSI_FAILED FAILED |
| 148 | |
| 149 | /* |
| 150 | * System specific target data structure. |
| 151 | * None for now, under Linux. |
| 152 | */ |
| 153 | /* #define SYM_HAVE_STCB */ |
| 154 | |
| 155 | /* |
| 156 | * System specific lun data structure. |
| 157 | */ |
| 158 | #define SYM_HAVE_SLCB |
| 159 | struct sym_slcb { |
| 160 | u_short reqtags; /* Number of tags requested by user */ |
| 161 | u_short scdev_depth; /* Queue depth set in select_queue_depth() */ |
| 162 | }; |
| 163 | |
| 164 | /* |
| 165 | * System specific command data structure. |
| 166 | * Not needed under Linux. |
| 167 | */ |
| 168 | /* struct sym_sccb */ |
| 169 | |
| 170 | /* |
| 171 | * System specific host data structure. |
| 172 | */ |
| 173 | struct sym_shcb { |
| 174 | /* |
| 175 | * Chip and controller indentification. |
| 176 | */ |
| 177 | int unit; |
| 178 | char inst_name[16]; |
| 179 | char chip_name[8]; |
| 180 | struct pci_dev *device; |
| 181 | |
| 182 | struct Scsi_Host *host; |
| 183 | |
| 184 | void __iomem * ioaddr; /* MMIO kernel io address */ |
| 185 | void __iomem * ramaddr; /* RAM kernel io address */ |
| 186 | u_short io_ws; /* IO window size */ |
| 187 | int irq; /* IRQ number */ |
| 188 | |
| 189 | struct timer_list timer; /* Timer handler link header */ |
| 190 | u_long lasttime; |
| 191 | u_long settle_time; /* Resetting the SCSI BUS */ |
| 192 | u_char settle_time_valid; |
| 193 | }; |
| 194 | |
| 195 | /* |
| 196 | * Return the name of the controller. |
| 197 | */ |
| 198 | #define sym_name(np) (np)->s.inst_name |
| 199 | |
| 200 | struct sym_nvram; |
| 201 | |
| 202 | /* |
| 203 | * The IO macros require a struct called 's' and are abused in sym_nvram.c |
| 204 | */ |
| 205 | struct sym_device { |
| 206 | struct pci_dev *pdev; |
| 207 | unsigned long mmio_base; |
| 208 | unsigned long ram_base; |
| 209 | struct { |
| 210 | void __iomem *ioaddr; |
| 211 | void __iomem *ramaddr; |
| 212 | } s; |
| 213 | struct sym_chip chip; |
| 214 | struct sym_nvram *nvram; |
| 215 | u_short device_id; |
| 216 | u_char host_id; |
| 217 | }; |
| 218 | |
| 219 | /* |
| 220 | * Driver host data structure. |
| 221 | */ |
| 222 | struct host_data { |
| 223 | struct sym_hcb *ncb; |
| 224 | }; |
| 225 | |
| 226 | static inline struct sym_hcb * sym_get_hcb(struct Scsi_Host *host) |
| 227 | { |
| 228 | return ((struct host_data *)host->hostdata)->ncb; |
| 229 | } |
| 230 | |
| 231 | #include "sym_fw.h" |
| 232 | #include "sym_hipd.h" |
| 233 | |
| 234 | /* |
| 235 | * Set the status field of a CAM CCB. |
| 236 | */ |
| 237 | static __inline void |
| 238 | sym_set_cam_status(struct scsi_cmnd *cmd, int status) |
| 239 | { |
| 240 | cmd->result &= ~(0xff << 16); |
| 241 | cmd->result |= (status << 16); |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * Get the status field of a CAM CCB. |
| 246 | */ |
| 247 | static __inline int |
| 248 | sym_get_cam_status(struct scsi_cmnd *cmd) |
| 249 | { |
| 250 | return host_byte(cmd->result); |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * Build CAM result for a successful IO and for a failed IO. |
| 255 | */ |
| 256 | static __inline void sym_set_cam_result_ok(struct sym_ccb *cp, struct scsi_cmnd *cmd, int resid) |
| 257 | { |
FUJITA Tomonori | 938febd | 2007-05-26 02:31:17 +0900 | [diff] [blame] | 258 | scsi_set_resid(cmd, resid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | cmd->result = (((DID_OK) << 16) + ((cp->ssss_status) & 0x7f)); |
| 260 | } |
| 261 | void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid); |
| 262 | |
| 263 | void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *ccb); |
| 264 | #define sym_print_addr(cmd, arg...) dev_info(&cmd->device->sdev_gendev , ## arg) |
| 265 | void sym_xpt_async_bus_reset(struct sym_hcb *np); |
| 266 | void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target); |
| 267 | int sym_setup_data_and_start (struct sym_hcb *np, struct scsi_cmnd *csio, struct sym_ccb *cp); |
| 268 | void sym_log_bus_error(struct sym_hcb *np); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
| 270 | #endif /* SYM_GLUE_H */ |