patch-2.4.20 linux-2.4.20/drivers/scsi/zalon7xx.c
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- Lines: 163
- Date:
Thu Nov 28 15:53:14 2002
- Orig file:
linux-2.4.19/drivers/scsi/zalon7xx.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.19/drivers/scsi/zalon7xx.c linux-2.4.20/drivers/scsi/zalon7xx.c
@@ -0,0 +1,162 @@
+/*
+ * Zalon 53c7xx device driver.
+ * By Richard Hirst (rhirst@linuxcare.com)
+ */
+
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/blk.h>
+#include <linux/sched.h>
+#include <linux/version.h>
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/hardware.h>
+#include <asm/delay.h>
+#include <asm/gsc.h>
+
+#include "scsi.h"
+#include "hosts.h"
+
+/*
+ * ** Define the BSD style u_int32 and u_int64 type.
+ * ** Are in fact u_int32_t and u_int64_t :-)
+ * */
+typedef u32 u_int32;
+typedef u64 u_int64;
+typedef u_long vm_offset_t;
+
+#include "zalon7xx.h"
+
+
+/* hosts_* are kluges to pass info between the zalon7xx_detected()
+** and the register_parisc_driver() callbacks.
+*/
+static Scsi_Host_Template *hosts_tptr;
+static int hosts_used=0;
+static int zalon_id = 0;
+
+extern int zalon_attach(Scsi_Host_Template *tpnt,
+ unsigned long base_addr,
+ struct parisc_device *dev,
+ int irq_vector,
+ int unit
+ );
+
+
+#if 0
+/* FIXME:
+ * Is this function dead code? or is someone planning on using it in the
+ * future. The clock = (int) pdc_result[16] does not look correct to
+ * me ... I think it should be iodc_data[16]. Since this cause a compile
+ * error with the new encapsulated PDC, I'm not compiling in this function.
+ * - RB
+ */
+/* poke SCSI clock out of iodc data */
+
+static u8 iodc_data[32] __attribute__ ((aligned (64)));
+static unsigned long pdc_result[32] __attribute__ ((aligned (16))) ={0,0,0,0};
+
+static int
+lasi_scsi_clock(void * hpa, int defaultclock)
+{
+ int clock, status;
+
+ status = pdc_iodc_read(&pdc_result, hpa, 0, &iodc_data, 32 );
+ if (status == PDC_RET_OK) {
+ clock = (int) pdc_result[16];
+ } else {
+ printk(KERN_WARNING "%s: pdc_iodc_read returned %d\n", __FUNCTION__, status);
+ clock = defaultclock;
+ }
+
+ printk(KERN_DEBUG "%s: SCSI clock %d\n", __FUNCTION__, clock);
+ return clock;
+}
+#endif
+
+static int __init
+zalon_scsi_callback(struct parisc_device *dev)
+{
+ struct gsc_irq gsc_irq;
+ u32 zalon_vers;
+ int irq;
+ unsigned long zalon = dev->hpa;
+
+ __raw_writel(CMD_RESET, zalon + IO_MODULE_IO_COMMAND);
+ while (!(__raw_readl(zalon + IO_MODULE_IO_STATUS) & IOSTATUS_RY))
+ ;
+ __raw_writel(IOIIDATA_MINT5EN | IOIIDATA_PACKEN | IOIIDATA_PREFETCHEN,
+ zalon + IO_MODULE_II_CDATA);
+
+ /* XXX: Save the Zalon version for bug workarounds? */
+ zalon_vers = __raw_readl(dev->hpa + IO_MODULE_II_CDATA) & 0x07000000;
+ zalon_vers >>= 24;
+
+ /* Setup the interrupts first.
+ ** Later on request_irq() will register the handler.
+ */
+ irq = gsc_alloc_irq(&gsc_irq);
+
+ printk("%s: Zalon vers field is 0x%x, IRQ %d\n", __FUNCTION__,
+ zalon_vers, irq);
+
+ __raw_writel(gsc_irq.txn_addr | gsc_irq.txn_data, dev->hpa + IO_MODULE_EIM);
+
+ if ( zalon_vers == 0)
+ printk(KERN_WARNING "%s: Zalon 1.1 or earlier\n", __FUNCTION__);
+
+ /*
+ ** zalon_attach: returns -1 on failure, 0 on success
+ */
+ hosts_used = zalon_attach(hosts_tptr, dev->hpa + GSC_SCSI_ZALON_OFFSET,
+ dev, irq, zalon_id);
+
+ if (hosts_used == 0)
+ zalon_id++;
+
+ hosts_used = (hosts_used == 0);
+ return (hosts_used == 0);
+}
+
+static struct parisc_device_id zalon_tbl[] = {
+ { HPHW_A_DMA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00089 },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(parisc, zalon_tbl);
+
+static struct parisc_driver zalon_driver = {
+ name: "GSC SCSI (Zalon)",
+ id_table: zalon_tbl,
+ probe: zalon_scsi_callback,
+};
+
+int zalon7xx_detect(Scsi_Host_Template *tpnt)
+{
+ /* "pass" the parameter to the callback functions */
+ hosts_tptr = tpnt;
+ hosts_used = 0;
+
+ /* claim all zalon cards. */
+ register_parisc_driver(&zalon_driver);
+
+ /* Check if any callbacks actually found/claimed anything. */
+ return (hosts_used != 0);
+}
+
+#ifdef MODULE
+extern int ncr53c8xx_release(struct Scsi_Host *host);
+
+int zalon7xx_release(struct Scsi_Host *host)
+{
+ ncr53c8xx_release(host);
+ unregister_parisc_driver(&zalon_driver);
+ return 1;
+}
+#endif
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