diff options
| -rw-r--r-- | Documentation/scsi/advansys.txt | 243 | ||||
| -rw-r--r-- | drivers/scsi/advansys.c | 766 |
2 files changed, 262 insertions, 747 deletions
diff --git a/Documentation/scsi/advansys.txt b/Documentation/scsi/advansys.txt new file mode 100644 index 00000000000..4a3db62b742 --- /dev/null +++ b/Documentation/scsi/advansys.txt @@ -0,0 +1,243 @@ +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) + +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) + +Driver Compile Time Options and Debugging + +The following constants can be defined in the source file. + +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 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) + + 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/{0,1,2,3,...} + + 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. + +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. + +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> continued the Advansys SCSI +driver development for ConnectCom (Version > 3.3F). + +Ken Witherow for extensive testing during the development of version 3.4. diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c index 19c2d19f254..4d4d7c9b22b 100644 --- a/drivers/scsi/advansys.c +++ b/drivers/scsi/advansys.c @@ -20,743 +20,6 @@ * On June 18, 2001 Initio Corp. acquired ConnectCom's SCSI assets */ -/* - - 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 struct 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 'struct 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/{0,1,2,3,...} - - 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 IRQF_SHARED 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 IRQF_DISABLED - flag set to allow IRQ sharing with drivers that do not set - the IRQF_DISABLED 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/module.h> #include <linux/string.h> #include <linux/kernel.h> @@ -785,20 +48,29 @@ #include <scsi/scsi.h> #include <scsi/scsi_host.h> -/* FIXME: (by jejb@steeleye.com) +/* FIXME: * - * 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. + * 1. 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. + * 2. 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? + * 3. 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. + * 4. Need to add support for target mode commands, cf. CAM XPT. + * 5. check DMA mapping functions for failure + * 6. Remove internal queueing + * 7. Use scsi_transport_spi + * 8. advansys_info is not safe against multiple simultaneous callers + * 9. Kill boardp->id + * 10. Add module_param to override ISA/VLB ioport array */ #warning this driver is still not properly converted to the DMA API -/* - * --- Driver Options - */ - /* Enable driver assertions. */ #define ADVANSYS_ASSERT |