Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/scsi/gvp11.c b/drivers/scsi/gvp11.c
new file mode 100644
index 0000000..30cbf73
--- /dev/null
+++ b/drivers/scsi/gvp11.c
@@ -0,0 +1,387 @@
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/blkdev.h>
+#include <linux/sched.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+
+#include <asm/setup.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/amigaints.h>
+#include <asm/amigahw.h>
+#include <linux/zorro.h>
+#include <asm/irq.h>
+#include <linux/spinlock.h>
+
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include "wd33c93.h"
+#include "gvp11.h"
+
+#include<linux/stat.h>
+
+#define DMA(ptr) ((gvp11_scsiregs *)((ptr)->base))
+#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
+
+static irqreturn_t gvp11_intr (int irq, void *_instance, struct pt_regs *fp)
+{
+ unsigned long flags;
+ unsigned int status;
+ struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
+
+ status = DMA(instance)->CNTR;
+ if (!(status & GVP11_DMAC_INT_PENDING))
+ return IRQ_NONE;
+
+ spin_lock_irqsave(instance->host_lock, flags);
+ wd33c93_intr(instance);
+ spin_unlock_irqrestore(instance->host_lock, flags);
+ return IRQ_HANDLED;
+}
+
+static int gvp11_xfer_mask = 0;
+
+void gvp11_setup (char *str, int *ints)
+{
+ gvp11_xfer_mask = ints[1];
+}
+
+static int dma_setup (Scsi_Cmnd *cmd, int dir_in)
+{
+ unsigned short cntr = GVP11_DMAC_INT_ENABLE;
+ unsigned long addr = virt_to_bus(cmd->SCp.ptr);
+ int bank_mask;
+ static int scsi_alloc_out_of_range = 0;
+
+ /* use bounce buffer if the physical address is bad */
+ if (addr & HDATA(cmd->device->host)->dma_xfer_mask ||
+ (!dir_in && mm_end_of_chunk (addr, cmd->SCp.this_residual)))
+ {
+ HDATA(cmd->device->host)->dma_bounce_len = (cmd->SCp.this_residual + 511)
+ & ~0x1ff;
+
+ if( !scsi_alloc_out_of_range ) {
+ HDATA(cmd->device->host)->dma_bounce_buffer =
+ kmalloc (HDATA(cmd->device->host)->dma_bounce_len, GFP_KERNEL);
+ HDATA(cmd->device->host)->dma_buffer_pool = BUF_SCSI_ALLOCED;
+ }
+
+ if (scsi_alloc_out_of_range ||
+ !HDATA(cmd->device->host)->dma_bounce_buffer) {
+ HDATA(cmd->device->host)->dma_bounce_buffer =
+ amiga_chip_alloc(HDATA(cmd->device->host)->dma_bounce_len,
+ "GVP II SCSI Bounce Buffer");
+
+ if(!HDATA(cmd->device->host)->dma_bounce_buffer)
+ {
+ HDATA(cmd->device->host)->dma_bounce_len = 0;
+ return 1;
+ }
+
+ HDATA(cmd->device->host)->dma_buffer_pool = BUF_CHIP_ALLOCED;
+ }
+
+ /* check if the address of the bounce buffer is OK */
+ addr = virt_to_bus(HDATA(cmd->device->host)->dma_bounce_buffer);
+
+ if (addr & HDATA(cmd->device->host)->dma_xfer_mask) {
+ /* fall back to Chip RAM if address out of range */
+ if( HDATA(cmd->device->host)->dma_buffer_pool == BUF_SCSI_ALLOCED) {
+ kfree (HDATA(cmd->device->host)->dma_bounce_buffer);
+ scsi_alloc_out_of_range = 1;
+ } else {
+ amiga_chip_free (HDATA(cmd->device->host)->dma_bounce_buffer);
+ }
+
+ HDATA(cmd->device->host)->dma_bounce_buffer =
+ amiga_chip_alloc(HDATA(cmd->device->host)->dma_bounce_len,
+ "GVP II SCSI Bounce Buffer");
+
+ if(!HDATA(cmd->device->host)->dma_bounce_buffer)
+ {
+ HDATA(cmd->device->host)->dma_bounce_len = 0;
+ return 1;
+ }
+
+ addr = virt_to_bus(HDATA(cmd->device->host)->dma_bounce_buffer);
+ HDATA(cmd->device->host)->dma_buffer_pool = BUF_CHIP_ALLOCED;
+ }
+
+ if (!dir_in) {
+ /* copy to bounce buffer for a write */
+ memcpy (HDATA(cmd->device->host)->dma_bounce_buffer,
+ cmd->SCp.ptr, cmd->SCp.this_residual);
+ }
+ }
+
+ /* setup dma direction */
+ if (!dir_in)
+ cntr |= GVP11_DMAC_DIR_WRITE;
+
+ HDATA(cmd->device->host)->dma_dir = dir_in;
+ DMA(cmd->device->host)->CNTR = cntr;
+
+ /* setup DMA *physical* address */
+ DMA(cmd->device->host)->ACR = addr;
+
+ if (dir_in)
+ /* invalidate any cache */
+ cache_clear (addr, cmd->SCp.this_residual);
+ else
+ /* push any dirty cache */
+ cache_push (addr, cmd->SCp.this_residual);
+
+ if ((bank_mask = (~HDATA(cmd->device->host)->dma_xfer_mask >> 18) & 0x01c0))
+ DMA(cmd->device->host)->BANK = bank_mask & (addr >> 18);
+
+ /* start DMA */
+ DMA(cmd->device->host)->ST_DMA = 1;
+
+ /* return success */
+ return 0;
+}
+
+static void dma_stop (struct Scsi_Host *instance, Scsi_Cmnd *SCpnt,
+ int status)
+{
+ /* stop DMA */
+ DMA(instance)->SP_DMA = 1;
+ /* remove write bit from CONTROL bits */
+ DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
+
+ /* copy from a bounce buffer, if necessary */
+ if (status && HDATA(instance)->dma_bounce_buffer) {
+ if (HDATA(instance)->dma_dir && SCpnt)
+ memcpy (SCpnt->SCp.ptr,
+ HDATA(instance)->dma_bounce_buffer,
+ SCpnt->SCp.this_residual);
+
+ if (HDATA(instance)->dma_buffer_pool == BUF_SCSI_ALLOCED)
+ kfree (HDATA(instance)->dma_bounce_buffer);
+ else
+ amiga_chip_free(HDATA(instance)->dma_bounce_buffer);
+
+ HDATA(instance)->dma_bounce_buffer = NULL;
+ HDATA(instance)->dma_bounce_len = 0;
+ }
+}
+
+#define CHECK_WD33C93
+
+int __init gvp11_detect(Scsi_Host_Template *tpnt)
+{
+ static unsigned char called = 0;
+ struct Scsi_Host *instance;
+ unsigned long address;
+ unsigned int epc;
+ struct zorro_dev *z = NULL;
+ unsigned int default_dma_xfer_mask;
+ wd33c93_regs regs;
+ int num_gvp11 = 0;
+#ifdef CHECK_WD33C93
+ volatile unsigned char *sasr_3393, *scmd_3393;
+ unsigned char save_sasr;
+ unsigned char q, qq;
+#endif
+
+ if (!MACH_IS_AMIGA || called)
+ return 0;
+ called = 1;
+
+ tpnt->proc_name = "GVP11";
+ tpnt->proc_info = &wd33c93_proc_info;
+
+ while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
+ /*
+ * This should (hopefully) be the correct way to identify
+ * all the different GVP SCSI controllers (except for the
+ * SERIES I though).
+ */
+
+ if (z->id == ZORRO_PROD_GVP_COMBO_030_R3_SCSI ||
+ z->id == ZORRO_PROD_GVP_SERIES_II)
+ default_dma_xfer_mask = ~0x00ffffff;
+ else if (z->id == ZORRO_PROD_GVP_GFORCE_030_SCSI ||
+ z->id == ZORRO_PROD_GVP_A530_SCSI ||
+ z->id == ZORRO_PROD_GVP_COMBO_030_R4_SCSI)
+ default_dma_xfer_mask = ~0x01ffffff;
+ else if (z->id == ZORRO_PROD_GVP_A1291 ||
+ z->id == ZORRO_PROD_GVP_GFORCE_040_SCSI_1)
+ default_dma_xfer_mask = ~0x07ffffff;
+ else
+ continue;
+
+ /*
+ * Rumors state that some GVP ram boards use the same product
+ * code as the SCSI controllers. Therefore if the board-size
+ * is not 64KB we asume it is a ram board and bail out.
+ */
+ if (z->resource.end-z->resource.start != 0xffff)
+ continue;
+
+ address = z->resource.start;
+ if (!request_mem_region(address, 256, "wd33c93"))
+ continue;
+
+#ifdef CHECK_WD33C93
+
+ /*
+ * These darn GVP boards are a problem - it can be tough to tell
+ * whether or not they include a SCSI controller. This is the
+ * ultimate Yet-Another-GVP-Detection-Hack in that it actually
+ * probes for a WD33c93 chip: If we find one, it's extremely
+ * likely that this card supports SCSI, regardless of Product_
+ * Code, Board_Size, etc.
+ */
+
+ /* Get pointers to the presumed register locations and save contents */
+
+ sasr_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SASR);
+ scmd_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SCMD);
+ save_sasr = *sasr_3393;
+
+ /* First test the AuxStatus Reg */
+
+ q = *sasr_3393; /* read it */
+ if (q & 0x08) /* bit 3 should always be clear */
+ goto release;
+ *sasr_3393 = WD_AUXILIARY_STATUS; /* setup indirect address */
+ if (*sasr_3393 == WD_AUXILIARY_STATUS) { /* shouldn't retain the write */
+ *sasr_3393 = save_sasr; /* Oops - restore this byte */
+ goto release;
+ }
+ if (*sasr_3393 != q) { /* should still read the same */
+ *sasr_3393 = save_sasr; /* Oops - restore this byte */
+ goto release;
+ }
+ if (*scmd_3393 != q) /* and so should the image at 0x1f */
+ goto release;
+
+
+ /* Ok, we probably have a wd33c93, but let's check a few other places
+ * for good measure. Make sure that this works for both 'A and 'B
+ * chip versions.
+ */
+
+ *sasr_3393 = WD_SCSI_STATUS;
+ q = *scmd_3393;
+ *sasr_3393 = WD_SCSI_STATUS;
+ *scmd_3393 = ~q;
+ *sasr_3393 = WD_SCSI_STATUS;
+ qq = *scmd_3393;
+ *sasr_3393 = WD_SCSI_STATUS;
+ *scmd_3393 = q;
+ if (qq != q) /* should be read only */
+ goto release;
+ *sasr_3393 = 0x1e; /* this register is unimplemented */
+ q = *scmd_3393;
+ *sasr_3393 = 0x1e;
+ *scmd_3393 = ~q;
+ *sasr_3393 = 0x1e;
+ qq = *scmd_3393;
+ *sasr_3393 = 0x1e;
+ *scmd_3393 = q;
+ if (qq != q || qq != 0xff) /* should be read only, all 1's */
+ goto release;
+ *sasr_3393 = WD_TIMEOUT_PERIOD;
+ q = *scmd_3393;
+ *sasr_3393 = WD_TIMEOUT_PERIOD;
+ *scmd_3393 = ~q;
+ *sasr_3393 = WD_TIMEOUT_PERIOD;
+ qq = *scmd_3393;
+ *sasr_3393 = WD_TIMEOUT_PERIOD;
+ *scmd_3393 = q;
+ if (qq != (~q & 0xff)) /* should be read/write */
+ goto release;
+#endif
+
+ instance = scsi_register (tpnt, sizeof (struct WD33C93_hostdata));
+ if(instance == NULL)
+ goto release;
+ instance->base = ZTWO_VADDR(address);
+ instance->irq = IRQ_AMIGA_PORTS;
+ instance->unique_id = z->slotaddr;
+
+ if (gvp11_xfer_mask)
+ HDATA(instance)->dma_xfer_mask = gvp11_xfer_mask;
+ else
+ HDATA(instance)->dma_xfer_mask = default_dma_xfer_mask;
+
+
+ DMA(instance)->secret2 = 1;
+ DMA(instance)->secret1 = 0;
+ DMA(instance)->secret3 = 15;
+ while (DMA(instance)->CNTR & GVP11_DMAC_BUSY) ;
+ DMA(instance)->CNTR = 0;
+
+ DMA(instance)->BANK = 0;
+
+ epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000);
+
+ /*
+ * Check for 14MHz SCSI clock
+ */
+ regs.SASR = &(DMA(instance)->SASR);
+ regs.SCMD = &(DMA(instance)->SCMD);
+ wd33c93_init(instance, regs, dma_setup, dma_stop,
+ (epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10
+ : WD33C93_FS_12_15);
+
+ request_irq(IRQ_AMIGA_PORTS, gvp11_intr, SA_SHIRQ, "GVP11 SCSI",
+ instance);
+ DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
+ num_gvp11++;
+ continue;
+
+release:
+ release_mem_region(address, 256);
+ }
+
+ return num_gvp11;
+}
+
+static int gvp11_bus_reset(Scsi_Cmnd *cmd)
+{
+ /* FIXME perform bus-specific reset */
+ wd33c93_host_reset(cmd);
+ return SUCCESS;
+}
+
+
+#define HOSTS_C
+
+#include "gvp11.h"
+
+static Scsi_Host_Template driver_template = {
+ .proc_name = "GVP11",
+ .name = "GVP Series II SCSI",
+ .detect = gvp11_detect,
+ .release = gvp11_release,
+ .queuecommand = wd33c93_queuecommand,
+ .eh_abort_handler = wd33c93_abort,
+ .eh_bus_reset_handler = gvp11_bus_reset,
+ .eh_host_reset_handler = wd33c93_host_reset,
+ .can_queue = CAN_QUEUE,
+ .this_id = 7,
+ .sg_tablesize = SG_ALL,
+ .cmd_per_lun = CMD_PER_LUN,
+ .use_clustering = DISABLE_CLUSTERING
+};
+
+
+#include "scsi_module.c"
+
+int gvp11_release(struct Scsi_Host *instance)
+{
+#ifdef MODULE
+ DMA(instance)->CNTR = 0;
+ release_mem_region(ZTWO_PADDR(instance->base), 256);
+ free_irq(IRQ_AMIGA_PORTS, instance);
+ wd33c93_release();
+#endif
+ return 1;
+}
+
+MODULE_LICENSE("GPL");
