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272 lines
9.6 KiB
272 lines
9.6 KiB
.. SPDX-License-Identifier: GPL-2.0 |
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===================== |
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AdvanSys Driver Notes |
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===================== |
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AdvanSys (Advanced System Products, Inc.) manufactures the following |
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RISC-based, Bus-Mastering, Fast (10 Mhz) and Ultra (20 Mhz) Narrow |
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(8-bit transfer) SCSI Host Adapters for the ISA, EISA, VL, and PCI |
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buses and RISC-based, Bus-Mastering, Ultra (20 Mhz) Wide (16-bit |
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transfer) SCSI Host Adapters for the PCI bus. |
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The CDB counts below indicate the number of SCSI CDB (Command |
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Descriptor Block) requests that can be stored in the RISC chip |
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cache and board LRAM. A CDB is a single SCSI command. The driver |
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detect routine will display the number of CDBs available for each |
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adapter detected. The number of CDBs used by the driver can be |
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lowered in the BIOS by changing the 'Host Queue Size' adapter setting. |
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Laptop Products: |
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- ABP-480 - Bus-Master CardBus (16 CDB) |
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Connectivity Products: |
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- ABP510/5150 - Bus-Master ISA (240 CDB) |
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- ABP5140 - Bus-Master ISA PnP (16 CDB) |
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- ABP5142 - Bus-Master ISA PnP with floppy (16 CDB) |
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- ABP902/3902 - Bus-Master PCI (16 CDB) |
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- ABP3905 - Bus-Master PCI (16 CDB) |
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- ABP915 - Bus-Master PCI (16 CDB) |
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- ABP920 - Bus-Master PCI (16 CDB) |
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- ABP3922 - Bus-Master PCI (16 CDB) |
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- ABP3925 - Bus-Master PCI (16 CDB) |
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- ABP930 - Bus-Master PCI (16 CDB) |
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- ABP930U - Bus-Master PCI Ultra (16 CDB) |
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- ABP930UA - Bus-Master PCI Ultra (16 CDB) |
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- ABP960 - Bus-Master PCI MAC/PC (16 CDB) |
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- ABP960U - Bus-Master PCI MAC/PC Ultra (16 CDB) |
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Single Channel Products: |
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- ABP542 - Bus-Master ISA with floppy (240 CDB) |
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- ABP742 - Bus-Master EISA (240 CDB) |
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- ABP842 - Bus-Master VL (240 CDB) |
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- ABP940 - Bus-Master PCI (240 CDB) |
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- ABP940U - Bus-Master PCI Ultra (240 CDB) |
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- ABP940UA/3940UA - Bus-Master PCI Ultra (240 CDB) |
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- ABP970 - Bus-Master PCI MAC/PC (240 CDB) |
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- ABP970U - Bus-Master PCI MAC/PC Ultra (240 CDB) |
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- ABP3960UA - Bus-Master PCI MAC/PC Ultra (240 CDB) |
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- ABP940UW/3940UW - Bus-Master PCI Ultra-Wide (253 CDB) |
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- ABP970UW - Bus-Master PCI MAC/PC Ultra-Wide (253 CDB) |
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- ABP3940U2W - Bus-Master PCI LVD/Ultra2-Wide (253 CDB) |
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Multi-Channel Products: |
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- ABP752 - Dual Channel Bus-Master EISA (240 CDB Per Channel) |
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- ABP852 - Dual Channel Bus-Master VL (240 CDB Per Channel) |
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- ABP950 - Dual Channel Bus-Master PCI (240 CDB Per Channel) |
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- ABP950UW - Dual Channel Bus-Master PCI Ultra-Wide (253 CDB Per Channel) |
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- ABP980 - Four Channel Bus-Master PCI (240 CDB Per Channel) |
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- ABP980U - Four Channel Bus-Master PCI Ultra (240 CDB Per Channel) |
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- ABP980UA/3980UA - Four Channel Bus-Master PCI Ultra (16 CDB Per Chan.) |
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- ABP3950U2W - Bus-Master PCI LVD/Ultra2-Wide and Ultra-Wide (253 CDB) |
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- ABP3950U3W - Bus-Master PCI Dual LVD2/Ultra3-Wide (253 CDB) |
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Driver Compile Time Options and Debugging |
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========================================= |
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The following constants can be defined in the source file. |
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1. ADVANSYS_ASSERT - Enable driver assertions (Def: Enabled) |
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Enabling this option adds assertion logic statements to the |
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driver. If an assertion fails a message will be displayed to |
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the console, but the system will continue to operate. Any |
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assertions encountered should be reported to the person |
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responsible for the driver. Assertion statements may proactively |
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detect problems with the driver and facilitate fixing these |
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problems. Enabling assertions will add a small overhead to the |
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execution of the driver. |
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2. ADVANSYS_DEBUG - Enable driver debugging (Def: Disabled) |
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Enabling this option adds tracing functions to the driver and the |
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ability to set a driver tracing level at boot time. This option is |
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very useful for debugging the driver, but it will add to the size |
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of the driver execution image and add overhead to the execution of |
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the driver. |
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The amount of debugging output can be controlled with the global |
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variable 'asc_dbglvl'. The higher the number the more output. By |
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default the debug level is 0. |
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If the driver is loaded at boot time and the LILO Driver Option |
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is included in the system, the debug level can be changed by |
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specifying a 5th (ASC_NUM_IOPORT_PROBE + 1) I/O Port. The |
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first three hex digits of the pseudo I/O Port must be set to |
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'deb' and the fourth hex digit specifies the debug level: 0 - F. |
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The following command line will look for an adapter at 0x330 |
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and set the debug level to 2:: |
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linux advansys=0x330,0,0,0,0xdeb2 |
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If the driver is built as a loadable module this variable can be |
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defined when the driver is loaded. The following insmod command |
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will set the debug level to one:: |
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insmod advansys.o asc_dbglvl=1 |
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Debugging Message Levels: |
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==== ================== |
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0 Errors Only |
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1 High-Level Tracing |
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2-N Verbose Tracing |
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==== ================== |
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To enable debug output to console, please make sure that: |
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a. System and kernel logging is enabled (syslogd, klogd running). |
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b. Kernel messages are routed to console output. Check |
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/etc/syslog.conf for an entry similar to this:: |
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kern.* /dev/console |
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c. klogd is started with the appropriate -c parameter |
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(e.g. klogd -c 8) |
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This will cause printk() messages to be displayed on the |
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current console. Refer to the klogd(8) and syslogd(8) man pages |
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for details. |
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Alternatively you can enable printk() to console with this |
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program. However, this is not the 'official' way to do this. |
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Debug output is logged in /var/log/messages. |
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:: |
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main() |
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{ |
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syscall(103, 7, 0, 0); |
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} |
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Increasing LOG_BUF_LEN in kernel/printk.c to something like |
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40960 allows more debug messages to be buffered in the kernel |
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and written to the console or log file. |
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3. ADVANSYS_STATS - Enable statistics (Def: Enabled) |
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Enabling this option adds statistics collection and display |
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through /proc to the driver. The information is useful for |
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monitoring driver and device performance. It will add to the |
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size of the driver execution image and add minor overhead to |
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the execution of the driver. |
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Statistics are maintained on a per adapter basis. Driver entry |
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point call counts and transfer size counts are maintained. |
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Statistics are only available for kernels greater than or equal |
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to v1.3.0 with the CONFIG_PROC_FS (/proc) file system configured. |
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AdvanSys SCSI adapter files have the following path name format:: |
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/proc/scsi/advansys/{0,1,2,3,...} |
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This information can be displayed with cat. For example:: |
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cat /proc/scsi/advansys/0 |
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When ADVANSYS_STATS is not defined the AdvanSys /proc files only |
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contain adapter and device configuration information. |
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Driver LILO Option |
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================== |
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If init/main.c is modified as described in the 'Directions for Adding |
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the AdvanSys Driver to Linux' section (B.4.) above, the driver will |
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recognize the 'advansys' LILO command line and /etc/lilo.conf option. |
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This option can be used to either disable I/O port scanning or to limit |
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scanning to 1 - 4 I/O ports. Regardless of the option setting EISA and |
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PCI boards will still be searched for and detected. This option only |
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affects searching for ISA and VL boards. |
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Examples: |
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1. Eliminate I/O port scanning: |
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boot:: |
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linux advansys= |
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or:: |
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boot: linux advansys=0x0 |
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2. Limit I/O port scanning to one I/O port: |
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boot:: |
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linux advansys=0x110 |
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3. Limit I/O port scanning to four I/O ports: |
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boot:: |
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linux advansys=0x110,0x210,0x230,0x330 |
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For a loadable module the same effect can be achieved by setting |
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the 'asc_iopflag' variable and 'asc_ioport' array when loading |
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the driver, e.g.:: |
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insmod advansys.o asc_iopflag=1 asc_ioport=0x110,0x330 |
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If ADVANSYS_DEBUG is defined a 5th (ASC_NUM_IOPORT_PROBE + 1) |
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I/O Port may be added to specify the driver debug level. Refer to |
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the 'Driver Compile Time Options and Debugging' section above for |
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more information. |
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Credits (Chronological Order) |
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============================= |
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Bob Frey <[email protected]> wrote the AdvanSys SCSI driver |
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and maintained it up to 3.3F. He continues to answer questions |
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and help maintain the driver. |
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Nathan Hartwell <[email protected]> provided the directions and |
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basis for the Linux v1.3.X changes which were included in the |
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1.2 release. |
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Thomas E Zerucha <[email protected]> pointed out a bug |
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in advansys_biosparam() which was fixed in the 1.3 release. |
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Erik Ratcliffe <[email protected]> has done testing of the |
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AdvanSys driver in the Caldera releases. |
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Rik van Riel <[email protected]> provided a patch to |
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AscWaitTixISRDone() which he found necessary to make the |
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driver work with a SCSI-1 disk. |
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Mark Moran <[email protected]> has helped test Ultra-Wide |
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support in the 3.1A driver. |
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Doug Gilbert <[email protected]> has made changes and |
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suggestions to improve the driver and done a lot of testing. |
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Ken Mort <[email protected]> reported a DEBUG compile bug fixed |
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in 3.2K. |
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Tom Rini <[email protected]> provided the CONFIG_ISA |
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patch and helped with PowerPC wide and narrow board support. |
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Philip Blundell <[email protected]> provided an |
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advansys_interrupts_enabled patch. |
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Dave Jones <[email protected]> reported the compiler |
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warnings generated when CONFIG_PROC_FS was not defined in |
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the 3.2M driver. |
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Jerry Quinn <[email protected]> fixed PowerPC support (endian |
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problems) for wide cards. |
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Bryan Henderson <[email protected]> helped debug narrow |
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card error handling. |
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Manuel Veloso <[email protected]> worked hard on PowerPC narrow |
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board support and fixed a bug in AscGetEEPConfig(). |
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Arnaldo Carvalho de Melo <[email protected]> made |
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save_flags/restore_flags changes. |
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Andy Kellner <[email protected]> continued the Advansys SCSI |
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driver development for ConnectCom (Version > 3.3F). |
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Ken Witherow for extensive testing during the development of version 3.4.
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