It has been possible to build the PAS16 SCSI driver as a module for
some time. What has been missing is a way to specify the I/O address
and IRQ (other than by defining PAS16_OVERRIDE at compile time) if
autoprobing couldn't find the card. The attached patches (one for
2.2.11, the other for 2.3.13) correct this deficiency so that things
like "modprobe pas16 pas16_addr=0x388 pas16_irq=5" will work.
John Weidman and Drew Eckhardt are the last known maintainers of this
driver. I am *not* assuming ownership by submitting these patches :-).
Standard disclaimers apply, including "it works for me". The patches
should apply cleanly modulo minor line number differences due to a few
comments I added to the original driver code. Thank you for your
consideration.
-- Bob Tracy | "They couldn't hit an elephant at this dist- " Firewall Security Corp. | - Last words of Union General John Sedgwick, rct@frus.com | Battle of Spotsylvania Court House, U.S. Civil War--ELM934331030-225-0_ Content-Type: text/plain; charset=US-ASCII Content-Disposition: attachment; filename=patch11_pas16 Content-Description: /usr/src/linux-2.2/.patch/patch11_pas16 Content-Transfer-Encoding: 7bit
--- linux/drivers/scsi/pas16.c.orig Wed Apr 15 06:45:55 1998 +++ linux/drivers/scsi/pas16.c Tue Aug 10 19:03:32 1999 @@ -74,7 +74,6 @@ * software after reset using the default_irq for the * current board number. * - * * 2. With command line overrides - pas16=port,irq may be * used on the LILO command line to override the defaults. * @@ -84,6 +83,11 @@ * -DPAS16_OVERRIDE={{0x388, 10}} * NOTE: Untested. * + * 4. When included as a module, with arguments passed on the command line: + * pas16_irq=xx the interrupt + * pas16_addr=xx the port + * e.g. "modprobe pas16 pas16_addr=0x388 pas16_irq=5" + * * Note that if the override methods are used, place holders must * be specified for other boards in the system. * @@ -100,7 +104,11 @@ * interrupts. Ie, for a board at the default 0x388 base port, * boot: linux pas16=0x388,255 * - * (255 is the IRQ_NONE constant in NCR5380.h) + * IRQ_NONE (255) should be specified for no interrupt, + * IRQ_AUTO (254) to autoprobe for an IRQ line if overridden + * on the command line. + * + * (IRQ_AUTO == 254, IRQ_NONE == 255 in NCR5380.h) */ #ifdef MODULE @@ -130,6 +138,8 @@ }; static int pas_maxi = 0; static int pas_wmaxi = 0; +static unsigned short pas16_addr = 0; +static int pas16_irq = 0; int scsi_irq_translate[] = @@ -384,6 +394,22 @@ tpnt->proc_dir = &proc_scsi_pas16; tpnt->proc_info = &pas16_proc_info; + if (pas16_addr != 0) { + overrides[0].io_port = pas16_addr; + /* + * This is how we avoid seeing more than + * one host adapter at the same I/O port. + * Cribbed shamelessly from pas16_setup(). + */ + for (count = 0; count < NO_BASES; ++count) + if (bases[count].io_port == pas16_addr) { + bases[count].noauto = 1; + break; + } + } + if (pas16_irq != 0) + overrides[0].irq = pas16_irq; + for (count = 0; current_override < NO_OVERRIDES; ++current_override) { io_port = 0; @@ -579,5 +605,8 @@ Scsi_Host_Template driver_template = MV_PAS16; #include <linux/module.h> + +MODULE_PARM(pas16_addr, "h"); +MODULE_PARM(pas16_irq, "i"); #include "scsi_module.c" #endif
--ELM934331030-225-0_ Content-Type: text/plain; charset=US-ASCII Content-Disposition: attachment; filename=patch13_pas16 Content-Description: /usr/src/linux-2.3/.patch/patch13_pas16 Content-Transfer-Encoding: 7bit
--- linux/drivers/scsi/pas16.c.orig Tue Aug 10 18:26:03 1999 +++ linux/drivers/scsi/pas16.c Tue Aug 10 18:51:59 1999 @@ -74,7 +74,6 @@ * software after reset using the default_irq for the * current board number. * - * * 2. With command line overrides - pas16=port,irq may be * used on the LILO command line to override the defaults. * @@ -84,6 +83,11 @@ * -DPAS16_OVERRIDE={{0x388, 10}} * NOTE: Untested. * + * 4. When included as a module, with arguments passed on the command line: + * pas16_irq=xx the interrupt + * pas16_addr=xx the port + * e.g. "modprobe pas16 pas16_addr=0x388 pas16_irq=5" + * * Note that if the override methods are used, place holders must * be specified for other boards in the system. * @@ -100,7 +104,11 @@ * interrupts. Ie, for a board at the default 0x388 base port, * boot: linux pas16=0x388,255 * - * (255 is the IRQ_NONE constant in NCR5380.h) + * IRQ_NONE (255) should be specified for no interrupt, + * IRQ_AUTO (254) to autoprobe for an IRQ line if overridden + * on the command line. + * + * (IRQ_AUTO == 254, IRQ_NONE == 255 in NCR5380.h) */ #ifdef MODULE @@ -130,6 +138,8 @@ }; static int pas_maxi = 0; static int pas_wmaxi = 0; +static unsigned short pas16_addr = 0; +static int pas16_irq = 0; int scsi_irq_translate[] = @@ -386,6 +396,22 @@ tpnt->proc_dir = &proc_scsi_pas16; tpnt->proc_info = &pas16_proc_info; + if (pas16_addr != 0) { + overrides[0].io_port = pas16_addr; + /* + * This is how we avoid seeing more than + * one host adapter at the same I/O port. + * Cribbed shamelessly from pas16_setup(). + */ + for (count = 0; count < NO_BASES; ++count) + if (bases[count].io_port == pas16_addr) { + bases[count].noauto = 1; + break; + } + } + if (pas16_irq != 0) + overrides[0].irq = pas16_irq; + for (count = 0; current_override < NO_OVERRIDES; ++current_override) { io_port = 0; @@ -581,4 +607,7 @@ Scsi_Host_Template driver_template = MV_PAS16; #include "scsi_module.c" + +MODULE_PARM(pas16_addr, "h"); +MODULE_PARM(pas16_irq, "i"); #endif
--ELM934331030-225-0_--
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