From 9c3f0e2b52ada30fe72beec27b83e91e12566609 Mon Sep 17 00:00:00 2001 From: Finn Thain Date: Sun, 3 Jan 2016 16:05:11 +1100 Subject: atari_NCR5380: Remove RESET_BOOT, CONFIG_ATARI_SCSI_TOSHIBA_DELAY and CONFIG_ATARI_SCSI_RESET_BOOT The atari_NCR5380.c core driver now takes care of bus reset upon driver initialization if required (same as NCR5380.c). Move the Toshiba CD-ROM support into the core driver, enabled with a host flag, so that all NCR5380 drivers can make use of it. Drop the RESET_BOOT macros and the ATARI_SCSI_RESET_BOOT and ATARI_SCSI_TOSHIBA_DELAY Kconfig symbols, which are now redundant. Remove the atari_scsi_reset_boot(), mac_scsi_reset_boot() and sun3_scsi_reset_boot() routines. None of this duplicated code is needed now that all drivers can use NCR5380_maybe_reset_bus(). This brings atari_scsi, mac_scsi and sun3_scsi into line with all of the other NCR5380 drivers. The bus reset may raise an interrupt. That would be new behaviour for atari_scsi only when CONFIG_ATARI_SCSI_RESET_BOOT=n. The ST DMA interrupt is not assigned to atari_scsi at this stage, so CONFIG_ATARI_SCSI_RESET_BOOT=y may well be problematic already. Regardless, do_reset() now raises and clears the interrupt within local_irq_save/restore which should avoid problems. Signed-off-by: Finn Thain Reviewed-by: Hannes Reinecke Tested-by: Ondrej Zary Tested-by: Michael Schmitz Signed-off-by: Martin K. Petersen --- drivers/scsi/sun3_scsi.c | 47 +---------------------------------------------- 1 file changed, 1 insertion(+), 46 deletions(-) (limited to 'drivers/scsi/sun3_scsi.c') diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c index 836f5ca6d209..9376b3d8bfdc 100644 --- a/drivers/scsi/sun3_scsi.c +++ b/drivers/scsi/sun3_scsi.c @@ -86,10 +86,6 @@ module_param(setup_use_tagged_queuing, int, 0); static int setup_hostid = -1; module_param(setup_hostid, int, 0); -/* #define RESET_BOOT */ - -#define AFTER_RESET_DELAY (HZ/2) - /* ms to wait after hitting dma regs */ #define SUN3_DMA_DELAY 10 @@ -144,45 +140,6 @@ static inline void sun3_udc_write(unsigned short val, unsigned char reg) } #endif -#ifdef RESET_BOOT -static void sun3_scsi_reset_boot(struct Scsi_Host *instance) -{ - unsigned long end; - - /* - * Do a SCSI reset to clean up the bus during initialization. No - * messing with the queues, interrupts, or locks necessary here. - */ - - printk( "Sun3 SCSI: resetting the SCSI bus..." ); - - /* switch off SCSI IRQ - catch an interrupt without IRQ bit set else */ -// sun3_disable_irq( IRQ_SUN3_SCSI ); - - /* get in phase */ - NCR5380_write( TARGET_COMMAND_REG, - PHASE_SR_TO_TCR( NCR5380_read(STATUS_REG) )); - - /* assert RST */ - NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_RST ); - - /* The min. reset hold time is 25us, so 40us should be enough */ - udelay( 50 ); - - /* reset RST and interrupt */ - NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE ); - NCR5380_read( RESET_PARITY_INTERRUPT_REG ); - - for( end = jiffies + AFTER_RESET_DELAY; time_before(jiffies, end); ) - barrier(); - - /* switch on SCSI IRQ again */ -// sun3_enable_irq( IRQ_SUN3_SCSI ); - - printk( " done\n" ); -} -#endif - // safe bits for the CSR #define CSR_GOOD 0x060f @@ -631,9 +588,7 @@ static int __init sun3_scsi_probe(struct platform_device *pdev) dregs->ivect = VME_DATA24 | (instance->irq & 0xff); #endif -#ifdef RESET_BOOT - sun3_scsi_reset_boot(instance); -#endif + NCR5380_maybe_reset_bus(instance); error = scsi_add_host(instance, NULL); if (error) -- cgit v1.2.3