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Diffstat (limited to 'drivers/scsi/README.ncr53c8xx')
| -rw-r--r-- | drivers/scsi/README.ncr53c8xx | 61 |
1 files changed, 56 insertions, 5 deletions
diff --git a/drivers/scsi/README.ncr53c8xx b/drivers/scsi/README.ncr53c8xx index 53b690f7c..d93492a83 100644 --- a/drivers/scsi/README.ncr53c8xx +++ b/drivers/scsi/README.ncr53c8xx @@ -1,10 +1,10 @@ -The linux NCR53C8XX driver README file +The Linux NCR53C8XX driver README file Written by Gerard Roudier <groudier@club-internet.fr> 21 Rue Carnot 95170 DEUIL LA BARRE - FRANCE -6 April 1997 +9 May 1997 =============================================================================== 1. Introduction @@ -22,6 +22,7 @@ Written by Gerard Roudier <groudier@club-internet.fr> 8.5 Set debug mode 8.6 Clear profile counters 8.7 Set flag (no_sync) + 8.8 Debug error recovery 9. Configuration parameters 10. Boot setup commands 10.1 Syntax @@ -203,7 +204,6 @@ General information: IO port address 0x6000, IRQ number 10 Using memory mapped IO at virtual address 0x282c000 Synchronous transfer period 25, max commands per lun 4 - Profiling information: num_trans = 18014 num_kbytes = 671314 @@ -390,6 +390,57 @@ Available commands: - setflag all will allow disconnection for all devices on the SCSI bus. + +8.8 Debug error recovery + + debug_error_recovery <error to trigger> + + Available error type to trigger: + sge: SCSI gross error + abort: abort command from the middle-level driver + reset: reset command from the middle-level driver + parity: scsi parity detected in DATA IN phase + none: restore driver normal behaviour + + The code corresponding to this feature is normally not compiled. + Its purpose is driver testing only. In order to compile the code + that allows to trigger error recovery you must define at compile time + SCSI_NCR_DEBUG_ERROR_RECOVERY. + If you have compiled the driver with this option, nothing will happen + as long as you donnot use the control command 'debug_error_recovery' + with sge, abort, reset or parity as argument. + If you select an error type, it will be triggered by the driver every + 30 seconds. + +8.9 PCI configuration fix-up + + pcifix <option bits> + + Available option bits: + 0x1: Set PCI cache-line size register if not set. + 0x2: Set write and invalidate bit in PCI command register. + + Use 'pcifix:3' in order to allow the driver to fix both PCI features. + + These options only apply to new SYMBIOS chips 810A, 825A, 860 and 875 + and are only supported for Pentium and 486 class processors. + Recent SYMBIOS 53C8XX scsi processors are able to use PCI read multiple + and PCI write and invalidate commands. These features require the + cache line size register to be properly set in the PCI configuration + space of the chips. On the other hand, chips will use PCI write and + invalidate commands only if the corresponding bit is set to 1 in the + PCI command register. + + Not all PCI bioses set the PCI cache line register and the PCI write and + invalidate bit in the PCI configuration space of 53C8XX chips. + Optimized PCI accesses may be broken for some PCI/memory controllers or + make problems with some PCI boards. + + This fix-up works flawlessly on my system. + (MB Triton HX / 53C875 / 53C810A) + I use these options at my own risks as you will do if you decide to + use them too. + 9. Configuration parameters If the firmware of all your devices is perfect enough, all the @@ -736,9 +787,9 @@ Driver and common files: You must untar the distribution with the following command: - tar zxvf ncrBsd2Linux-1.18d-src.tar.gz + tar zxvf ncrBsd2Linux-2.1b-src.tar.gz -The sub-directory ncr53c8xx-1.18d will be created. Change to this directory. +The sub-directory ncr53c8xx-2.1b will be created. Change to this directory. 12.2 Installation procedure |