forked from luck/tmp_suning_uos_patched
cd354f1ae7
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
266 lines
6.7 KiB
C
266 lines
6.7 KiB
C
#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/blkdev.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <asm/setup.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/amigaints.h>
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#include <asm/amigahw.h>
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#include <linux/zorro.h>
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#include <asm/irq.h>
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#include <linux/spinlock.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#include "wd33c93.h"
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#include "a2091.h"
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#include<linux/stat.h>
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#define DMA(ptr) ((a2091_scsiregs *)((ptr)->base))
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#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
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static irqreturn_t a2091_intr (int irq, void *_instance)
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{
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unsigned long flags;
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unsigned int status;
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struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
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status = DMA(instance)->ISTR;
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if (!(status & (ISTR_INT_F|ISTR_INT_P)) || !(status & ISTR_INTS))
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return IRQ_NONE;
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spin_lock_irqsave(instance->host_lock, flags);
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wd33c93_intr(instance);
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spin_unlock_irqrestore(instance->host_lock, flags);
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return IRQ_HANDLED;
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}
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static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
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{
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unsigned short cntr = CNTR_PDMD | CNTR_INTEN;
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unsigned long addr = virt_to_bus(cmd->SCp.ptr);
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struct Scsi_Host *instance = cmd->device->host;
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/* don't allow DMA if the physical address is bad */
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if (addr & A2091_XFER_MASK ||
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(!dir_in && mm_end_of_chunk (addr, cmd->SCp.this_residual)))
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{
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HDATA(instance)->dma_bounce_len = (cmd->SCp.this_residual + 511)
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& ~0x1ff;
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HDATA(instance)->dma_bounce_buffer =
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kmalloc (HDATA(instance)->dma_bounce_len, GFP_KERNEL);
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/* can't allocate memory; use PIO */
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if (!HDATA(instance)->dma_bounce_buffer) {
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HDATA(instance)->dma_bounce_len = 0;
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return 1;
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}
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/* get the physical address of the bounce buffer */
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addr = virt_to_bus(HDATA(instance)->dma_bounce_buffer);
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/* the bounce buffer may not be in the first 16M of physmem */
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if (addr & A2091_XFER_MASK) {
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/* we could use chipmem... maybe later */
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kfree (HDATA(instance)->dma_bounce_buffer);
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HDATA(instance)->dma_bounce_buffer = NULL;
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HDATA(instance)->dma_bounce_len = 0;
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return 1;
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}
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if (!dir_in) {
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/* copy to bounce buffer for a write */
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if (cmd->use_sg)
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#if 0
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panic ("scsi%ddma: incomplete s/g support",
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instance->host_no);
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#else
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memcpy (HDATA(instance)->dma_bounce_buffer,
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cmd->SCp.ptr, cmd->SCp.this_residual);
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#endif
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else
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memcpy (HDATA(instance)->dma_bounce_buffer,
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cmd->request_buffer, cmd->request_bufflen);
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}
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}
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/* setup dma direction */
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if (!dir_in)
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cntr |= CNTR_DDIR;
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/* remember direction */
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HDATA(cmd->device->host)->dma_dir = dir_in;
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DMA(cmd->device->host)->CNTR = cntr;
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/* setup DMA *physical* address */
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DMA(cmd->device->host)->ACR = addr;
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if (dir_in){
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/* invalidate any cache */
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cache_clear (addr, cmd->SCp.this_residual);
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}else{
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/* push any dirty cache */
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cache_push (addr, cmd->SCp.this_residual);
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}
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/* start DMA */
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DMA(cmd->device->host)->ST_DMA = 1;
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/* return success */
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return 0;
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}
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static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
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int status)
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{
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/* disable SCSI interrupts */
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unsigned short cntr = CNTR_PDMD;
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if (!HDATA(instance)->dma_dir)
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cntr |= CNTR_DDIR;
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/* disable SCSI interrupts */
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DMA(instance)->CNTR = cntr;
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/* flush if we were reading */
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if (HDATA(instance)->dma_dir) {
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DMA(instance)->FLUSH = 1;
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while (!(DMA(instance)->ISTR & ISTR_FE_FLG))
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;
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}
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/* clear a possible interrupt */
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DMA(instance)->CINT = 1;
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/* stop DMA */
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DMA(instance)->SP_DMA = 1;
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/* restore the CONTROL bits (minus the direction flag) */
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DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
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/* copy from a bounce buffer, if necessary */
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if (status && HDATA(instance)->dma_bounce_buffer) {
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if (SCpnt && SCpnt->use_sg) {
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#if 0
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panic ("scsi%d: incomplete s/g support",
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instance->host_no);
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#else
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if( HDATA(instance)->dma_dir )
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memcpy (SCpnt->SCp.ptr,
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HDATA(instance)->dma_bounce_buffer,
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SCpnt->SCp.this_residual);
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kfree (HDATA(instance)->dma_bounce_buffer);
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HDATA(instance)->dma_bounce_buffer = NULL;
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HDATA(instance)->dma_bounce_len = 0;
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#endif
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} else {
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if (HDATA(instance)->dma_dir && SCpnt)
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memcpy (SCpnt->request_buffer,
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HDATA(instance)->dma_bounce_buffer,
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SCpnt->request_bufflen);
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kfree (HDATA(instance)->dma_bounce_buffer);
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HDATA(instance)->dma_bounce_buffer = NULL;
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HDATA(instance)->dma_bounce_len = 0;
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}
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}
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}
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int __init a2091_detect(struct scsi_host_template *tpnt)
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{
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static unsigned char called = 0;
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struct Scsi_Host *instance;
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unsigned long address;
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struct zorro_dev *z = NULL;
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wd33c93_regs regs;
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int num_a2091 = 0;
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if (!MACH_IS_AMIGA || called)
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return 0;
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called = 1;
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tpnt->proc_name = "A2091";
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tpnt->proc_info = &wd33c93_proc_info;
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while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
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if (z->id != ZORRO_PROD_CBM_A590_A2091_1 &&
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z->id != ZORRO_PROD_CBM_A590_A2091_2)
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continue;
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address = z->resource.start;
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if (!request_mem_region(address, 256, "wd33c93"))
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continue;
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instance = scsi_register (tpnt, sizeof (struct WD33C93_hostdata));
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if (instance == NULL) {
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release_mem_region(address, 256);
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continue;
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}
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instance->base = ZTWO_VADDR(address);
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instance->irq = IRQ_AMIGA_PORTS;
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instance->unique_id = z->slotaddr;
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DMA(instance)->DAWR = DAWR_A2091;
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regs.SASR = &(DMA(instance)->SASR);
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regs.SCMD = &(DMA(instance)->SCMD);
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wd33c93_init(instance, regs, dma_setup, dma_stop, WD33C93_FS_8_10);
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request_irq(IRQ_AMIGA_PORTS, a2091_intr, IRQF_SHARED, "A2091 SCSI",
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instance);
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DMA(instance)->CNTR = CNTR_PDMD | CNTR_INTEN;
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num_a2091++;
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}
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return num_a2091;
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}
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static int a2091_bus_reset(struct scsi_cmnd *cmd)
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{
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/* FIXME perform bus-specific reset */
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/* FIXME 2: kill this function, and let midlayer fall back
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to the same action, calling wd33c93_host_reset() */
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spin_lock_irq(cmd->device->host->host_lock);
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wd33c93_host_reset(cmd);
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spin_unlock_irq(cmd->device->host->host_lock);
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return SUCCESS;
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}
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#define HOSTS_C
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static struct scsi_host_template driver_template = {
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.proc_name = "A2901",
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.name = "Commodore A2091/A590 SCSI",
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.detect = a2091_detect,
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.release = a2091_release,
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.queuecommand = wd33c93_queuecommand,
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.eh_abort_handler = wd33c93_abort,
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.eh_bus_reset_handler = a2091_bus_reset,
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.eh_host_reset_handler = wd33c93_host_reset,
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.can_queue = CAN_QUEUE,
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.this_id = 7,
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.sg_tablesize = SG_ALL,
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.cmd_per_lun = CMD_PER_LUN,
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.use_clustering = DISABLE_CLUSTERING
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};
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#include "scsi_module.c"
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int a2091_release(struct Scsi_Host *instance)
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{
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#ifdef MODULE
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DMA(instance)->CNTR = 0;
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release_mem_region(ZTWO_PADDR(instance->base), 256);
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free_irq(IRQ_AMIGA_PORTS, instance);
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wd33c93_release();
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#endif
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return 1;
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}
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MODULE_LICENSE("GPL");
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