diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/advansys.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/scsi/advansys.c')
-rw-r--r-- | drivers/scsi/advansys.c | 18237 |
1 files changed, 18237 insertions, 0 deletions
diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c new file mode 100644 index 000000000000..9962c51dc2a7 --- /dev/null +++ b/drivers/scsi/advansys.c @@ -0,0 +1,18237 @@ +#define ASC_VERSION "3.3K" /* AdvanSys Driver Version */ + +/* + * advansys.c - Linux Host Driver for AdvanSys SCSI Adapters + * + * Copyright (c) 1995-2000 Advanced System Products, Inc. + * Copyright (c) 2000-2001 ConnectCom Solutions, Inc. + * All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that redistributions of source + * code retain the above copyright notice and this comment without + * modification. + * + * As of March 8, 2000 Advanced System Products, Inc. (AdvanSys) + * changed its name to ConnectCom Solutions, Inc. + * + */ + +/* + + Documentation for the AdvanSys Driver + + A. Linux Kernels Supported by this Driver + B. Adapters Supported by this Driver + C. Linux source files modified by AdvanSys Driver + D. Source Comments + E. Driver Compile Time Options and Debugging + F. Driver LILO Option + G. Tests to run before releasing new driver + H. Release History + I. Known Problems/Fix List + J. Credits (Chronological Order) + + A. Linux Kernels Supported by this Driver + + This driver has been tested in the following Linux kernels: v2.2.18 + v2.4.0. The driver is supported on v2.2 and v2.4 kernels and on x86, + alpha, and PowerPC platforms. + + B. Adapters Supported by this Driver + + AdvanSys (Advanced System Products, Inc.) manufactures the following + RISC-based, Bus-Mastering, Fast (10 Mhz) and Ultra (20 Mhz) Narrow + (8-bit transfer) SCSI Host Adapters for the ISA, EISA, VL, and PCI + buses and RISC-based, Bus-Mastering, Ultra (20 Mhz) Wide (16-bit + transfer) SCSI Host Adapters for the PCI bus. + + The CDB counts below indicate the number of SCSI CDB (Command + Descriptor Block) requests that can be stored in the RISC chip + cache and board LRAM. A CDB is a single SCSI command. The driver + detect routine will display the number of CDBs available for each + adapter detected. The number of CDBs used by the driver can be + lowered in the BIOS by changing the 'Host Queue Size' adapter setting. + + Laptop Products: + ABP-480 - Bus-Master CardBus (16 CDB) (2.4 kernel and greater) + + Connectivity Products: + ABP510/5150 - Bus-Master ISA (240 CDB) + ABP5140 - Bus-Master ISA PnP (16 CDB) + ABP5142 - Bus-Master ISA PnP with floppy (16 CDB) + ABP902/3902 - Bus-Master PCI (16 CDB) + ABP3905 - Bus-Master PCI (16 CDB) + ABP915 - Bus-Master PCI (16 CDB) + ABP920 - Bus-Master PCI (16 CDB) + ABP3922 - Bus-Master PCI (16 CDB) + ABP3925 - Bus-Master PCI (16 CDB) + ABP930 - Bus-Master PCI (16 CDB) + ABP930U - Bus-Master PCI Ultra (16 CDB) + ABP930UA - Bus-Master PCI Ultra (16 CDB) + ABP960 - Bus-Master PCI MAC/PC (16 CDB) + ABP960U - Bus-Master PCI MAC/PC Ultra (16 CDB) + + Single Channel Products: + ABP542 - Bus-Master ISA with floppy (240 CDB) + ABP742 - Bus-Master EISA (240 CDB) + ABP842 - Bus-Master VL (240 CDB) + ABP940 - Bus-Master PCI (240 CDB) + ABP940U - Bus-Master PCI Ultra (240 CDB) + ABP940UA/3940UA - Bus-Master PCI Ultra (240 CDB) + ABP970 - Bus-Master PCI MAC/PC (240 CDB) + ABP970U - Bus-Master PCI MAC/PC Ultra (240 CDB) + ABP3960UA - Bus-Master PCI MAC/PC Ultra (240 CDB) + ABP940UW/3940UW - Bus-Master PCI Ultra-Wide (253 CDB) + ABP970UW - Bus-Master PCI MAC/PC Ultra-Wide (253 CDB) + ABP3940U2W - Bus-Master PCI LVD/Ultra2-Wide (253 CDB) + + Multi-Channel Products: + ABP752 - Dual Channel Bus-Master EISA (240 CDB Per Channel) + ABP852 - Dual Channel Bus-Master VL (240 CDB Per Channel) + ABP950 - Dual Channel Bus-Master PCI (240 CDB Per Channel) + ABP950UW - Dual Channel Bus-Master PCI Ultra-Wide (253 CDB Per Channel) + ABP980 - Four Channel Bus-Master PCI (240 CDB Per Channel) + ABP980U - Four Channel Bus-Master PCI Ultra (240 CDB Per Channel) + ABP980UA/3980UA - Four Channel Bus-Master PCI Ultra (16 CDB Per Chan.) + ABP3950U2W - Bus-Master PCI LVD/Ultra2-Wide and Ultra-Wide (253 CDB) + ABP3950U3W - Bus-Master PCI Dual LVD2/Ultra3-Wide (253 CDB) + + C. Linux source files modified by AdvanSys Driver + + This section for historical purposes documents the changes + originally made to the Linux kernel source to add the advansys + driver. As Linux has changed some of these files have also + been modified. + + 1. linux/arch/i386/config.in: + + bool 'AdvanSys SCSI support' CONFIG_SCSI_ADVANSYS y + + 2. linux/drivers/scsi/hosts.c: + + #ifdef CONFIG_SCSI_ADVANSYS + #include "advansys.h" + #endif + + and after "static Scsi_Host_Template builtin_scsi_hosts[] =": + + #ifdef CONFIG_SCSI_ADVANSYS + ADVANSYS, + #endif + + 3. linux/drivers/scsi/Makefile: + + ifdef CONFIG_SCSI_ADVANSYS + SCSI_SRCS := $(SCSI_SRCS) advansys.c + SCSI_OBJS := $(SCSI_OBJS) advansys.o + else + SCSI_MODULE_OBJS := $(SCSI_MODULE_OBJS) advansys.o + endif + + 4. linux/init/main.c: + + extern void advansys_setup(char *str, int *ints); + + and add the following lines to the bootsetups[] array. + + #ifdef CONFIG_SCSI_ADVANSYS + { "advansys=", advansys_setup }, + #endif + + D. Source Comments + + 1. Use tab stops set to 4 for the source files. For vi use 'se tabstops=4'. + + 2. This driver should be maintained in multiple files. But to make + it easier to include with Linux and to follow Linux conventions, + the whole driver is maintained in the source files advansys.h and + advansys.c. In this file logical sections of the driver begin with + a comment that contains '---'. The following are the logical sections + of the driver below. + + --- Linux Version + --- Linux Include File + --- Driver Options + --- Debugging Header + --- Asc Library Constants and Macros + --- Adv Library Constants and Macros + --- Driver Constants and Macros + --- Driver Structures + --- Driver Data + --- Driver Function Prototypes + --- Linux 'Scsi_Host_Template' and advansys_setup() Functions + --- Loadable Driver Support + --- Miscellaneous Driver Functions + --- Functions Required by the Asc Library + --- Functions Required by the Adv Library + --- Tracing and Debugging Functions + --- Asc Library Functions + --- Adv Library Functions + + 3. The string 'XXX' is used to flag code that needs to be re-written + or that contains a problem that needs to be addressed. + + 4. I have stripped comments from and reformatted the source for the + Asc Library and Adv Library to reduce the size of this file. This + source can be found under the following headings. The Asc Library + is used to support Narrow Boards. The Adv Library is used to + support Wide Boards. + + --- Asc Library Constants and Macros + --- Adv Library Constants and Macros + --- Asc Library Functions + --- Adv Library Functions + + E. Driver Compile Time Options and Debugging + + In this source file the following constants can be defined. They are + defined in the source below. Both of these options are enabled by + default. + + 1. ADVANSYS_ASSERT - Enable driver assertions (Def: Enabled) + + Enabling this option adds assertion logic statements to the + driver. If an assertion fails a message will be displayed to + the console, but the system will continue to operate. Any + assertions encountered should be reported to the person + responsible for the driver. Assertion statements may proactively + detect problems with the driver and facilitate fixing these + problems. Enabling assertions will add a small overhead to the + execution of the driver. + + 2. ADVANSYS_DEBUG - Enable driver debugging (Def: Disabled) + + Enabling this option adds tracing functions to the driver and + the ability to set a driver tracing level at boot time. This + option will also export symbols not required outside the driver to + the kernel name space. This option is very useful for debugging + the driver, but it will add to the size of the driver execution + image and add overhead to the execution of the driver. + + The amount of debugging output can be controlled with the global + variable 'asc_dbglvl'. The higher the number the more output. By + default the debug level is 0. + + If the driver is loaded at boot time and the LILO Driver Option + is included in the system, the debug level can be changed by + specifying a 5th (ASC_NUM_IOPORT_PROBE + 1) I/O Port. The + first three hex digits of the pseudo I/O Port must be set to + 'deb' and the fourth hex digit specifies the debug level: 0 - F. + The following command line will look for an adapter at 0x330 + and set the debug level to 2. + + linux advansys=0x330,0,0,0,0xdeb2 + + If the driver is built as a loadable module this variable can be + defined when the driver is loaded. The following insmod command + will set the debug level to one. + + insmod advansys.o asc_dbglvl=1 + + Debugging Message Levels: + 0: Errors Only + 1: High-Level Tracing + 2-N: Verbose Tracing + + To enable debug output to console, please make sure that: + + a. System and kernel logging is enabled (syslogd, klogd running). + b. Kernel messages are routed to console output. Check + /etc/syslog.conf for an entry similar to this: + + kern.* /dev/console + + c. klogd is started with the appropriate -c parameter + (e.g. klogd -c 8) + + This will cause printk() messages to be be displayed on the + current console. Refer to the klogd(8) and syslogd(8) man pages + for details. + + Alternatively you can enable printk() to console with this + program. However, this is not the 'official' way to do this. + Debug output is logged in /var/log/messages. + + main() + { + syscall(103, 7, 0, 0); + } + + Increasing LOG_BUF_LEN in kernel/printk.c to something like + 40960 allows more debug messages to be buffered in the kernel + and written to the console or log file. + + 3. ADVANSYS_STATS - Enable statistics (Def: Enabled >= v1.3.0) + + Enabling this option adds statistics collection and display + through /proc to the driver. The information is useful for + monitoring driver and device performance. It will add to the + size of the driver execution image and add minor overhead to + the execution of the driver. + + Statistics are maintained on a per adapter basis. Driver entry + point call counts and transfer size counts are maintained. + Statistics are only available for kernels greater than or equal + to v1.3.0 with the CONFIG_PROC_FS (/proc) file system configured. + + AdvanSys SCSI adapter files have the following path name format: + + /proc/scsi/advansys/[0-(ASC_NUM_BOARD_SUPPORTED-1)] + + This information can be displayed with cat. For example: + + cat /proc/scsi/advansys/0 + + When ADVANSYS_STATS is not defined the AdvanSys /proc files only + contain adapter and device configuration information. + + F. Driver LILO Option + + If init/main.c is modified as described in the 'Directions for Adding + the AdvanSys Driver to Linux' section (B.4.) above, the driver will + recognize the 'advansys' LILO command line and /etc/lilo.conf option. + This option can be used to either disable I/O port scanning or to limit + scanning to 1 - 4 I/O ports. Regardless of the option setting EISA and + PCI boards will still be searched for and detected. This option only + affects searching for ISA and VL boards. + + Examples: + 1. Eliminate I/O port scanning: + boot: linux advansys= + or + boot: linux advansys=0x0 + 2. Limit I/O port scanning to one I/O port: + boot: linux advansys=0x110 + 3. Limit I/O port scanning to four I/O ports: + boot: linux advansys=0x110,0x210,0x230,0x330 + + For a loadable module the same effect can be achieved by setting + the 'asc_iopflag' variable and 'asc_ioport' array when loading + the driver, e.g. + + insmod advansys.o asc_iopflag=1 asc_ioport=0x110,0x330 + + If ADVANSYS_DEBUG is defined a 5th (ASC_NUM_IOPORT_PROBE + 1) + I/O Port may be added to specify the driver debug level. Refer to + the 'Driver Compile Time Options and Debugging' section above for + more information. + + G. Tests to run before releasing new driver + + 1. In the supported kernels verify there are no warning or compile + errors when the kernel is built as both a driver and as a module + and with the following options: + + ADVANSYS_DEBUG - enabled and disabled + CONFIG_SMP - enabled and disabled + CONFIG_PROC_FS - enabled and disabled + + 2. Run tests on an x86, alpha, and PowerPC with at least one narrow + card and one wide card attached to a hard disk and CD-ROM drive: + fdisk, mkfs, fsck, bonnie, copy/compare test from the + CD-ROM to the hard drive. + + H. Release History + + BETA-1.0 (12/23/95): + First Release + + BETA-1.1 (12/28/95): + 1. Prevent advansys_detect() from being called twice. + 2. Add LILO 0xdeb[0-f] option to set 'asc_dbglvl'. + + 1.2 (1/12/96): + 1. Prevent re-entrancy in the interrupt handler which + resulted in the driver hanging Linux. + 2. Fix problem that prevented ABP-940 cards from being + recognized on some PCI motherboards. + 3. Add support for the ABP-5140 PnP ISA card. + 4. Fix check condition return status. + 5. Add conditionally compiled code for Linux v1.3.X. + + 1.3 (2/23/96): + 1. Fix problem in advansys_biosparam() that resulted in the + wrong drive geometry being returned for drives > 1GB with + extended translation enabled. + 2. Add additional tracing during device initialization. + 3. Change code that only applies to ISA PnP adapter. + 4. Eliminate 'make dep' warning. + 5. Try to fix problem with handling resets by increasing their + timeout value. + + 1.4 (5/8/96): + 1. Change definitions to eliminate conflicts with other subsystems. + 2. Add versioning code for the shared interrupt changes. + 3. Eliminate problem in asc_rmqueue() with iterating after removing + a request. + 4. Remove reset request loop problem from the "Known Problems or + Issues" section. This problem was isolated and fixed in the + mid-level SCSI driver. + + 1.5 (8/8/96): + 1. Add support for ABP-940U (PCI Ultra) adapter. + 2. Add support for IRQ sharing by setting the SA_SHIRQ flag for + request_irq and supplying a dev_id pointer to both request_irq() + and free_irq(). + 3. In AscSearchIOPortAddr11() restore a call to check_region() which + should be used before I/O port probing. + 4. Fix bug in asc_prt_hex() which resulted in the displaying + the wrong data. + 5. Incorporate miscellaneous Asc Library bug fixes and new microcode. + 6. Change driver versioning to be specific to each Linux sub-level. + 7. Change statistics gathering to be per adapter instead of global + to the driver. + 8. Add more information and statistics to the adapter /proc file: + /proc/scsi/advansys[0...]. + 9. Remove 'cmd_per_lun' from the "Known Problems or Issues" list. + This problem has been addressed with the SCSI mid-level changes + made in v1.3.89. The advansys_select_queue_depths() function + was added for the v1.3.89 changes. + + 1.6 (9/10/96): + 1. Incorporate miscellaneous Asc Library bug fixes and new microcode. + + 1.7 (9/25/96): + 1. Enable clustering and optimize the setting of the maximum number + of scatter gather elements for any particular board. Clustering + increases CPU utilization, but results in a relatively larger + increase in I/O throughput. + 2. Improve the performance of the request queuing functions by + adding a last pointer to the queue structure. + 3. Correct problems with reset and abort request handling that + could have hung or crashed Linux. + 4. Add more information to the adapter /proc file: + /proc/scsi/advansys[0...]. + 5. Remove the request timeout issue form the driver issues list. + 6. Miscellaneous documentation additions and changes. + + 1.8 (10/4/96): + 1. Make changes to handle the new v2.1.0 kernel memory mapping + in which a kernel virtual address may not be equivalent to its + bus or DMA memory address. + 2. Change abort and reset request handling to make it yet even + more robust. + 3. Try to mitigate request starvation by sending ordered requests + to heavily loaded, tag queuing enabled devices. + 4. Maintain statistics on request response time. + 5. Add request response time statistics and other information to + the adapter /proc file: /proc/scsi/advansys[0...]. + + 1.9 (10/21/96): + 1. Add conditionally compiled code (ASC_QUEUE_FLOW_CONTROL) to + make use of mid-level SCSI driver device queue depth flow + control mechanism. This will eliminate aborts caused by a + device being unable to keep up with requests and eliminate + repeat busy or QUEUE FULL status returned by a device. + 2. Incorporate miscellaneous Asc Library bug fixes. + 3. To allow the driver to work in kernels with broken module + support set 'cmd_per_lun' if the driver is compiled as a + module. This change affects kernels v1.3.89 to present. + 4. Remove PCI BIOS address from the driver banner. The PCI BIOS + is relocated by the motherboard BIOS and its new address can + not be determined by the driver. + 5. Add mid-level SCSI queue depth information to the adapter + /proc file: /proc/scsi/advansys[0...]. + + 2.0 (11/14/96): + 1. Change allocation of global structures used for device + initialization to guarantee they are in DMA-able memory. + Previously when the driver was loaded as a module these + structures might not have been in DMA-able memory, causing + device initialization to fail. + + 2.1 (12/30/96): + 1. In advansys_reset(), if the request is a synchronous reset + request, even if the request serial number has changed, then + complete the request. + 2. Add Asc Library bug fixes including new microcode. + 3. Clear inquiry buffer before using it. + 4. Correct ifdef typo. + + 2.2 (1/15/97): + 1. Add Asc Library bug fixes including new microcode. + 2. Add synchronous data transfer rate information to the + adapter /proc file: /proc/scsi/advansys[0...]. + 3. Change ADVANSYS_DEBUG to be disabled by default. This + will reduce the size of the driver image, eliminate execution + overhead, and remove unneeded symbols from the kernel symbol + space that were previously added by the driver. + 4. Add new compile-time option ADVANSYS_ASSERT for assertion + code that used to be defined within ADVANSYS_DEBUG. This + option is enabled by default. + + 2.8 (5/26/97): + 1. Change version number to 2.8 to synchronize the Linux driver + version numbering with other AdvanSys drivers. + 2. Reformat source files without tabs to present the same view + of the file to everyone regardless of the editor tab setting + being used. + 3. Add Asc Library bug fixes. + + 3.1A (1/8/98): + 1. Change version number to 3.1 to indicate that support for + Ultra-Wide adapters (ABP-940UW) is included in this release. + 2. Add Asc Library (Narrow Board) bug fixes. + 3. Report an underrun condition with the host status byte set + to DID_UNDERRUN. Currently DID_UNDERRUN is defined to 0 which + causes the underrun condition to be ignored. When Linux defines + its own DID_UNDERRUN the constant defined in this file can be + removed. + 4. Add patch to AscWaitTixISRDone(). + 5. Add support for up to 16 different AdvanSys host adapter SCSI + channels in one system. This allows four cards with four channels + to be used in one system. + + 3.1B (1/9/98): + 1. Handle that PCI register base addresses are not always page + aligned even though ioremap() requires that the address argument + be page aligned. + + 3.1C (1/10/98): + 1. Update latest BIOS version checked for from the /proc file. + 2. Don't set microcode SDTR variable at initialization. Instead + wait until device capabilities have been detected from an Inquiry + command. + + 3.1D (1/21/98): + 1. Improve performance when the driver is compiled as module by + allowing up to 64 scatter-gather elements instead of 8. + + 3.1E (5/1/98): + 1. Set time delay in AscWaitTixISRDone() to 1000 ms. + 2. Include SMP locking changes. + 3. For v2.1.93 and newer kernels use CONFIG_PCI and new PCI BIOS + access functions. + 4. Update board serial number printing. + 5. Try allocating an IRQ both with and without the SA_INTERRUPT + flag set to allow IRQ sharing with drivers that do not set + the SA_INTERRUPT flag. Also display a more descriptive error + message if request_irq() fails. + 6. Update to latest Asc and Adv Libraries. + + 3.2A (7/22/99): + 1. Update Adv Library to 4.16 which includes support for + the ASC38C0800 (Ultra2/LVD) IC. + + 3.2B (8/23/99): + 1. Correct PCI compile time option for v2.1.93 and greater + kernels, advansys_info() string, and debug compile time + option. + 2. Correct DvcSleepMilliSecond() for v2.1.0 and greater + kernels. This caused an LVD detection/BIST problem problem + among other things. + 3. Sort PCI cards by PCI Bus, Slot, Function ascending order + to be consistent with the BIOS. + 4. Update to Asc Library S121 and Adv Library 5.2. + + 3.2C (8/24/99): + 1. Correct PCI card detection bug introduced in 3.2B that + prevented PCI cards from being detected in kernels older + than v2.1.93. + + 3.2D (8/26/99): + 1. Correct /proc device synchronous speed information display. + Also when re-negotiation is pending for a target device + note this condition with an * and footnote. + 2. Correct initialization problem with Ultra-Wide cards that + have a pre-3.2 BIOS. A microcode variable changed locations + in 3.2 and greater BIOSes which caused WDTR to be attempted + erroneously with drives that don't support WDTR. + + 3.2E (8/30/99): + 1. Fix compile error caused by v2.3.13 PCI structure change. + 2. Remove field from ASCEEP_CONFIG that resulted in an EEPROM + checksum error for ISA cards. + 3. Remove ASC_QUEUE_FLOW_CONTROL conditional code. The mid-level + SCSI changes that it depended on were never included in Linux. + + 3.2F (9/3/99): + 1. Handle new initial function code added in v2.3.16 for all + driver versions. + + 3.2G (9/8/99): + 1. Fix PCI board detection in v2.3.13 and greater kernels. + 2. Fix comiple errors in v2.3.X with debugging enabled. + + 3.2H (9/13/99): + 1. Add 64-bit address, long support for Alpha and UltraSPARC. + The driver has been verified to work on an Alpha system. + 2. Add partial byte order handling support for Power PC and + other big-endian platforms. This support has not yet been + completed or verified. + 3. For wide boards replace block zeroing of request and + scatter-gather structures with individual field initialization + to improve performance. + 4. Correct and clarify ROM BIOS version detection. + + 3.2I (10/8/99): + 1. Update to Adv Library 5.4. + 2. Add v2.3.19 underrun reporting to asc_isr_callback() and + adv_isr_callback(). Remove DID_UNDERRUN constant and other + no longer needed code that previously documented the lack + of underrun handling. + + 3.2J (10/14/99): + 1. Eliminate compile errors for v2.0 and earlier kernels. + + 3.2K (11/15/99): + 1. Correct debug compile error in asc_prt_adv_scsi_req_q(). + 2. Update Adv Library to 5.5. + 3. Add ifdef handling for /proc changes added in v2.3.28. + 4. Increase Wide board scatter-gather list maximum length to + 255 when the driver is compiled into the kernel. + + 3.2L (11/18/99): + 1. Fix bug in adv_get_sglist() that caused an assertion failure + at line 7475. The reqp->sgblkp pointer must be initialized + to NULL in adv_get_sglist(). + + 3.2M (11/29/99): + 1. Really fix bug in adv_get_sglist(). + 2. Incorporate v2.3.29 changes into driver. + + 3.2N (4/1/00): + 1. Add CONFIG_ISA ifdef code. + 2. Include advansys_interrupts_enabled name change patch. + 3. For >= v2.3.28 use new SCSI error handling with new function + advansys_eh_bus_reset(). Don't include an abort function + because of base library limitations. + 4. For >= v2.3.28 use per board lock instead of io_request_lock. + 5. For >= v2.3.28 eliminate advansys_command() and + advansys_command_done(). + 6. Add some changes for PowerPC (Big Endian) support, but it isn't + working yet. + 7. Fix "nonexistent resource free" problem that occurred on a module + unload for boards with an I/O space >= 255. The 'n_io_port' field + is only one byte and can not be used to hold an ioport length more + than 255. + + 3.3A (4/4/00): + 1. Update to Adv Library 5.8. + 2. For wide cards add support for CDBs up to 16 bytes. + 3. Eliminate warnings when CONFIG_PROC_FS is not defined. + + 3.3B (5/1/00): + 1. Support for PowerPC (Big Endian) wide cards. Narrow cards + still need work. + 2. Change bitfields to shift and mask access for endian + portability. + + 3.3C (10/13/00): + 1. Update for latest 2.4 kernel. + 2. Test ABP-480 CardBus support in 2.4 kernel - works! + 3. Update to Asc Library S123. + 4. Update to Adv Library 5.12. + + 3.3D (11/22/00): + 1. Update for latest 2.4 kernel. + 2. Create patches for 2.2 and 2.4 kernels. + + 3.3E (1/9/01): + 1. Now that 2.4 is released remove ifdef code for kernel versions + less than 2.2. The driver is now only supported in kernels 2.2, + 2.4, and greater. + 2. Add code to release and acquire the io_request_lock in + the driver entrypoint functions: advansys_detect and + advansys_queuecommand. In kernel 2.4 the SCSI mid-level driver + still holds the io_request_lock on entry to SCSI low-level drivers. + This was supposed to be removed before 2.4 was released but never + happened. When the mid-level SCSI driver is changed all references + to the io_request_lock should be removed from the driver. + 3. Simplify error handling by removing advansys_abort(), + AscAbortSRB(), AscResetDevice(). SCSI bus reset requests are + now handled by resetting the SCSI bus and fully re-initializing + the chip. This simple method of error recovery has proven to work + most reliably after attempts at different methods. Also now only + support the "new" error handling method and remove the obsolete + error handling interface. + 4. Fix debug build errors. + + 3.3F (1/24/01): + 1. Merge with ConnectCom version from Andy Kellner which + updates Adv Library to 5.14. + 2. Make PowerPC (Big Endian) work for narrow cards and + fix problems writing EEPROM for wide cards. + 3. Remove interrupts_enabled assertion function. + + 3.3G (2/16/01): + 1. Return an error from narrow boards if passed a 16 byte + CDB. The wide board can already handle 16 byte CDBs. + + 3.3GJ (4/15/02): + 1. hacks for lk 2.5 series (D. Gilbert) + + 3.3GJD (10/14/02): + 1. change select_queue_depths to slave_configure + 2. make cmd_per_lun be sane again + + 3.3K [2004/06/24]: + 1. continuing cleanup for lk 2.6 series + 2. Fix problem in lk 2.6.7-bk2 that broke PCI wide cards + 3. Fix problem that oopsed ISA cards + + I. Known Problems/Fix List (XXX) + + 1. Need to add memory mapping workaround. Test the memory mapping. + If it doesn't work revert to I/O port access. Can a test be done + safely? + 2. Handle an interrupt not working. Keep an interrupt counter in + the interrupt handler. In the timeout function if the interrupt + has not occurred then print a message and run in polled mode. + 3. Allow bus type scanning order to be changed. + 4. Need to add support for target mode commands, cf. CAM XPT. + + J. Credits (Chronological Order) + + Bob Frey <bfrey@turbolinux.com.cn> wrote the AdvanSys SCSI driver + and maintained it up to 3.3F. He continues to answer questions + and help maintain the driver. + + Nathan Hartwell <mage@cdc3.cdc.net> provided the directions and + basis for the Linux v1.3.X changes which were included in the + 1.2 release. + + Thomas E Zerucha <zerucha@shell.portal.com> pointed out a bug + in advansys_biosparam() which was fixed in the 1.3 release. + + Erik Ratcliffe <erik@caldera.com> has done testing of the + AdvanSys driver in the Caldera releases. + + Rik van Riel <H.H.vanRiel@fys.ruu.nl> provided a patch to + AscWaitTixISRDone() which he found necessary to make the + driver work with a SCSI-1 disk. + + Mark Moran <mmoran@mmoran.com> has helped test Ultra-Wide + support in the 3.1A driver. + + Doug Gilbert <dgilbert@interlog.com> has made changes and + suggestions to improve the driver and done a lot of testing. + + Ken Mort <ken@mort.net> reported a DEBUG compile bug fixed + in 3.2K. + + Tom Rini <trini@kernel.crashing.org> provided the CONFIG_ISA + patch and helped with PowerPC wide and narrow board support. + + Philip Blundell <philb@gnu.org> provided an + advansys_interrupts_enabled patch. + + Dave Jones <dave@denial.force9.co.uk> reported the compiler + warnings generated when CONFIG_PROC_FS was not defined in + the 3.2M driver. + + Jerry Quinn <jlquinn@us.ibm.com> fixed PowerPC support (endian + problems) for wide cards. + + Bryan Henderson <bryanh@giraffe-data.com> helped debug narrow + card error handling. + + Manuel Veloso <veloso@pobox.com> worked hard on PowerPC narrow + board support and fixed a bug in AscGetEEPConfig(). + + Arnaldo Carvalho de Melo <acme@conectiva.com.br> made + save_flags/restore_flags changes. + + Andy Kellner <AKellner@connectcom.net> continues the Advansys SCSI + driver development for ConnectCom (Version > 3.3F). + + K. ConnectCom (AdvanSys) Contact Information + + Mail: ConnectCom Solutions, Inc. + 1150 Ringwood Court + San Jose, CA 95131 + Operator/Sales: 1-408-383-9400 + FAX: 1-408-383-9612 + Tech Support: 1-408-467-2930 + Tech Support E-Mail: linux@connectcom.net + FTP Site: ftp.connectcom.net (login: anonymous) + Web Site: http://www.connectcom.net + +*/ + +/* + * --- Linux Include Files + */ + +#include <linux/config.h> +#include <linux/module.h> + +#if defined(CONFIG_X86) && !defined(CONFIG_ISA) +#define CONFIG_ISA +#endif /* CONFIG_X86 && !CONFIG_ISA */ + +#include <linux/string.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/ioport.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/mm.h> +#include <linux/proc_fs.h> +#include <linux/init.h> +#include <linux/blkdev.h> +#include <linux/stat.h> +#include <linux/spinlock.h> +#include <linux/dma-mapping.h> + +#include <asm/io.h> +#include <asm/system.h> +#include <asm/dma.h> + +/* FIXME: (by jejb@steeleye.com) This warning is present for two + * reasons: + * + * 1) This driver badly needs converting to the correct driver model + * probing API + * + * 2) Although all of the necessary command mapping places have the + * appropriate dma_map.. APIs, the driver still processes its internal + * queue using bus_to_virt() and virt_to_bus() which are illegal under + * the API. The entire queue processing structure will need to be + * altered to fix this. + */ +#warning this driver is still not properly converted to the DMA API + +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_tcq.h> +#include <scsi/scsi.h> +#include <scsi/scsi_host.h> +#include "advansys.h" +#ifdef CONFIG_PCI +#include <linux/pci.h> +#endif /* CONFIG_PCI */ + + +/* + * --- Driver Options + */ + +/* Enable driver assertions. */ +#define ADVANSYS_ASSERT + +/* Enable driver /proc statistics. */ +#define ADVANSYS_STATS + +/* Enable driver tracing. */ +/* #define ADVANSYS_DEBUG */ + + +/* + * --- Debugging Header + */ + +#ifdef ADVANSYS_DEBUG +#define STATIC +#else /* ADVANSYS_DEBUG */ +#define STATIC static +#endif /* ADVANSYS_DEBUG */ + + +/* + * --- Asc Library Constants and Macros + */ + +#define ASC_LIB_VERSION_MAJOR 1 +#define ASC_LIB_VERSION_MINOR 24 +#define ASC_LIB_SERIAL_NUMBER 123 + +/* + * Portable Data Types + * + * Any instance where a 32-bit long or pointer type is assumed + * for precision or HW defined structures, the following define + * types must be used. In Linux the char, short, and int types + * are all consistent at 8, 16, and 32 bits respectively. Pointers + * and long types are 64 bits on Alpha and UltraSPARC. + */ +#define ASC_PADDR __u32 /* Physical/Bus address data type. */ +#define ASC_VADDR __u32 /* Virtual address data type. */ +#define ASC_DCNT __u32 /* Unsigned Data count type. */ +#define ASC_SDCNT __s32 /* Signed Data count type. */ + +/* + * These macros are used to convert a virtual address to a + * 32-bit value. This currently can be used on Linux Alpha + * which uses 64-bit virtual address but a 32-bit bus address. + * This is likely to break in the future, but doing this now + * will give us time to change the HW and FW to handle 64-bit + * addresses. + */ +#define ASC_VADDR_TO_U32 virt_to_bus +#define ASC_U32_TO_VADDR bus_to_virt + +typedef unsigned char uchar; + +#ifndef TRUE +#define TRUE (1) +#endif +#ifndef FALSE +#define FALSE (0) +#endif + +#define EOF (-1) +#define ERR (-1) +#define UW_ERR (uint)(0xFFFF) +#define isodd_word(val) ((((uint)val) & (uint)0x0001) != 0) +#define AscPCIConfigVendorIDRegister 0x0000 +#define AscPCIConfigDeviceIDRegister 0x0002 +#define AscPCIConfigCommandRegister 0x0004 +#define AscPCIConfigStatusRegister 0x0006 +#define AscPCIConfigRevisionIDRegister 0x0008 +#define AscPCIConfigCacheSize 0x000C +#define AscPCIConfigLatencyTimer 0x000D +#define AscPCIIOBaseRegister 0x0010 +#define AscPCICmdRegBits_IOMemBusMaster 0x0007 +#define ASC_PCI_ID2BUS(id) ((id) & 0xFF) +#define ASC_PCI_ID2DEV(id) (((id) >> 11) & 0x1F) +#define ASC_PCI_ID2FUNC(id) (((id) >> 8) & 0x7) +#define ASC_PCI_MKID(bus, dev, func) ((((dev) & 0x1F) << 11) | (((func) & 0x7) << 8) | ((bus) & 0xFF)) +#define ASC_PCI_VENDORID 0x10CD +#define ASC_PCI_DEVICEID_1200A 0x1100 +#define ASC_PCI_DEVICEID_1200B 0x1200 +#define ASC_PCI_DEVICEID_ULTRA 0x1300 +#define ASC_PCI_REVISION_3150 0x02 +#define ASC_PCI_REVISION_3050 0x03 + +#define ASC_DVCLIB_CALL_DONE (1) +#define ASC_DVCLIB_CALL_FAILED (0) +#define ASC_DVCLIB_CALL_ERROR (-1) + +/* + * Enable CC_VERY_LONG_SG_LIST to support up to 64K element SG lists. + * The SRB structure will have to be changed and the ASC_SRB2SCSIQ() + * macro re-defined to be able to obtain a ASC_SCSI_Q pointer from the + * SRB structure. + */ +#define CC_VERY_LONG_SG_LIST 0 +#define ASC_SRB2SCSIQ(srb_ptr) (srb_ptr) + +#define PortAddr unsigned short /* port address size */ +# |