Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 320 insertions, 0 deletions

diff --git a/drivers/scsi/fcal.c b/drivers/scsi/fcal.c
new file mode 100644
index 000000000000..0dad89d4cb3e
--- /dev/null
+++ b/drivers/scsi/fcal.c
@@ -0,0 +1,320 @@
+/* fcal.c: Fibre Channel Arbitrated Loop SCSI host adapter driver.
+ *
+ * Copyright (C) 1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/blkdev.h>
+#include <linux/proc_fs.h>
+#include <linux/stat.h>
+#include <linux/init.h>
+#include <linux/config.h>
+#ifdef CONFIG_KMOD
+#include <linux/kmod.h>
+#endif
+
+#include <asm/irq.h>
+
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include "../fc4/fcp_impl.h"
+#include "fcal.h"
+
+#include <linux/module.h>
+
+/* #define FCAL_DEBUG */
+
+#define fcal_printk printk ("FCAL %s: ", fc->name); printk
+
+#ifdef FCAL_DEBUG
+#define FCALD(x)  fcal_printk x;
+#define FCALND(x) printk ("FCAL: "); printk x;
+#else
+#define FCALD(x)
+#define FCALND(x)
+#endif
+
+static unsigned char alpa2target[] = {
+0x7e, 0x7d, 0x7c, 0xff, 0x7b, 0xff, 0xff, 0xff, 0x7a, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x79,
+0x78, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x77, 0x76, 0xff, 0xff, 0x75, 0xff, 0x74, 0x73, 0x72,
+0xff, 0xff, 0xff, 0x71, 0xff, 0x70, 0x6f, 0x6e, 0xff, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x68, 0xff,
+0xff, 0x67, 0x66, 0x65, 0x64, 0x63, 0x62, 0xff, 0xff, 0x61, 0x60, 0xff, 0x5f, 0xff, 0xff, 0xff,
+0xff, 0xff, 0xff, 0x5e, 0xff, 0x5d, 0x5c, 0x5b, 0xff, 0x5a, 0x59, 0x58, 0x57, 0x56, 0x55, 0xff,
+0xff, 0x54, 0x53, 0x52, 0x51, 0x50, 0x4f, 0xff, 0xff, 0x4e, 0x4d, 0xff, 0x4c, 0xff, 0xff, 0xff,
+0xff, 0xff, 0xff, 0x4b, 0xff, 0x4a, 0x49, 0x48, 0xff, 0x47, 0x46, 0x45, 0x44, 0x43, 0x42, 0xff,
+0xff, 0x41, 0x40, 0x3f, 0x3e, 0x3d, 0x3c, 0xff, 0xff, 0x3b, 0x3a, 0xff, 0x39, 0xff, 0xff, 0xff,
+0x38, 0x37, 0x36, 0xff, 0x35, 0xff, 0xff, 0xff, 0x34, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x33,
+0x32, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x31, 0x30, 0xff, 0xff, 0x2f, 0xff, 0x2e, 0x2d, 0x2c,
+0xff, 0xff, 0xff, 0x2b, 0xff, 0x2a, 0x29, 0x28, 0xff, 0x27, 0x26, 0x25, 0x24, 0x23, 0x22, 0xff,
+0xff, 0x21, 0x20, 0x1f, 0x1e, 0x1d, 0x1c, 0xff, 0xff, 0x1b, 0x1a, 0xff, 0x19, 0xff, 0xff, 0xff,
+0xff, 0xff, 0xff, 0x18, 0xff, 0x17, 0x16, 0x15, 0xff, 0x14, 0x13, 0x12, 0x11, 0x10, 0x0f, 0xff,
+0xff, 0x0e, 0x0d, 0x0c, 0x0b, 0x0a, 0x09, 0xff, 0xff, 0x08, 0x07, 0xff, 0x06, 0xff, 0xff, 0xff,
+0x05, 0x04, 0x03, 0xff, 0x02, 0xff, 0xff, 0xff, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00
+};
+
+static unsigned char target2alpa[] = {
+0xef, 0xe8, 0xe4, 0xe2, 0xe1, 0xe0, 0xdc, 0xda, 0xd9, 0xd6, 0xd5, 0xd4, 0xd3, 0xd2, 0xd1, 0xce,
+0xcd, 0xcc, 0xcb, 0xca, 0xc9, 0xc7, 0xc6, 0xc5, 0xc3, 0xbc, 0xba, 0xb9, 0xb6, 0xb5, 0xb4, 0xb3,
+0xb2, 0xb1, 0xae, 0xad, 0xac, 0xab, 0xaa, 0xa9, 0xa7, 0xa6, 0xa5, 0xa3, 0x9f, 0x9e, 0x9d, 0x9b,
+0x98, 0x97, 0x90, 0x8f, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7c, 0x7a, 0x79, 0x76, 0x75, 0x74, 0x73,
+0x72, 0x71, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5c, 0x5a, 0x59, 0x56,
+0x55, 0x54, 0x53, 0x52, 0x51, 0x4e, 0x4d, 0x4c, 0x4b, 0x4a, 0x49, 0x47, 0x46, 0x45, 0x43, 0x3c,
+0x3a, 0x39, 0x36, 0x35, 0x34, 0x33, 0x32, 0x31, 0x2e, 0x2d, 0x2c, 0x2b, 0x2a, 0x29, 0x27, 0x26,
+0x25, 0x23, 0x1f, 0x1e, 0x1d, 0x1b, 0x18, 0x17, 0x10, 0x0f, 0x08, 0x04, 0x02, 0x01, 0x00
+};
+
+static int fcal_encode_addr(Scsi_Cmnd *SCpnt, u16 *addr, fc_channel *fc, fcp_cmnd *fcmd);
+
+int fcal_slave_configure(Scsi_Device *device)
+{
+        int depth_to_use;
+        
+        if (device->tagged_supported)
+                depth_to_use = /* 254 */ 8;
+        else
+                depth_to_use = 2;
+
+        scsi_adjust_queue_depth(device,
+                                (device->tagged_supported ?
+                                 MSG_SIMPLE_TAG : 0),
+                                depth_to_use);
+
+        return 0;
+}
+
+/* Detect all FC Arbitrated Loops attached to the machine.
+   fc4 module has done all the work for us... */
+int __init fcal_detect(Scsi_Host_Template *tpnt)
+{
+        int nfcals = 0;
+        fc_channel *fc;
+        int fcalcount;
+        int i;
+
+        tpnt->proc_name = "fcal";
+        fcalcount = 0;
+        for_each_online_fc_channel(fc)
+                if (fc->posmap)
+                        fcalcount++;
+        FCALND(("%d channels online\n", fcalcount))
+        if (!fcalcount) {
+#if defined(MODULE) && defined(CONFIG_FC4_SOCAL_MODULE) && defined(CONFIG_KMOD)
+                request_module("socal");
+                
+                for_each_online_fc_channel(fc)
+                        if (fc->posmap)
+                                fcalcount++;
+                if (!fcalcount)
+#endif
+                        return 0;
+        }
+        for_each_online_fc_channel(fc) {
+                struct Scsi_Host *host;
+                long *ages;
+                struct fcal *fcal;
+                
+                if (!fc->posmap) continue;
+                
+                /* Strange, this is already registered to some other SCSI host, then it cannot be fcal */
+                if (fc->scsi_name[0]) continue;
+                memcpy (fc->scsi_name, "FCAL", 4);
+                
+                fc->can_queue = FCAL_CAN_QUEUE;
+                fc->rsp_size = 64;
+                fc->encode_addr = fcal_encode_addr;
+                
+                ages = kmalloc (128 * sizeof(long), GFP_KERNEL);
+                if (!ages) continue;
+                                
+                host = scsi_register (tpnt, sizeof (struct fcal));
+                if (!host) 
+                {
+                        kfree(ages);
+                        continue;
+                }
+                                
+                if (!try_module_get(fc->module)) {
+                        kfree(ages);
+                        scsi_unregister(host);
+                        continue;
+                }
+        
+                nfcals++;
+                                
+                fcal = (struct fcal *)host->hostdata;
+                
+                fc->fcp_register(fc, TYPE_SCSI_FCP, 0);
+
+                for (i = 0; i < fc->posmap->len; i++) {
+                        int status, target, alpa;
+
+                        alpa = fc->posmap->list[i];                     
+                        FCALD(("Sending PLOGI to %02x\n", alpa))
+                        target = alpa2target[alpa];
+                        status = fc_do_plogi(fc, alpa, fcal->node_wwn + target, 
+                                             fcal->nport_wwn + target);
+                        FCALD(("PLOGI returned with status %d\n", status))
+                        if (status != FC_STATUS_OK)
+                                continue;
+                        FCALD(("Sending PRLI to %02x\n", alpa))
+                        status = fc_do_prli(fc, alpa);
+                        FCALD(("PRLI returned with status %d\n", status))
+                        if (status == FC_STATUS_OK)
+                                fcal->map[target] = 1;
+                }
+                
+                host->max_id = 127;
+                host->irq = fc->irq;
+#ifdef __sparc_v9__
+                host->unchecked_isa_dma = 1;
+#endif
+
+                fc->channels = 1;
+                fc->targets = 127;
+                fc->ages = ages;
+                memset (ages, 0, 128 * sizeof(long));
+                                
+                fcal->fc = fc;
+                
+                FCALD(("Found FCAL\n"))
+        }
+        if (nfcals)
+#ifdef __sparc__
+                printk ("FCAL: Total of %d Sun Enterprise Network Array (A5000 or EX500) channels found\n", nfcals);
+#else
+                printk ("FCAL: Total of %d Fibre Channel Arbitrated Loops found\n", nfcals);
+#endif
+        return nfcals;
+}
+
+int fcal_release(struct Scsi_Host *host)
+{
+        struct fcal *fcal = (struct fcal *)host->hostdata;
+        fc_channel *fc = fcal->fc;
+
+        module_put(fc->module);
+        
+        fc->fcp_register(fc, TYPE_SCSI_FCP, 1);
+        FCALND((" releasing fcal.\n"));
+        kfree (fc->ages);
+        FCALND(("released fcal!\n"));
+        return 0;
+}
+
+#undef SPRINTF
+#define SPRINTF(args...) { if (pos < (buffer + length)) pos += sprintf (pos, ## args); }
+
+int fcal_proc_info (struct Scsi_Host *host, char *buffer, char **start, off_t offset, int length, int inout)
+{
+        struct fcal *fcal;
+        fc_channel *fc;
+        char *pos = buffer;
+        int i, j;
+
+        if (inout) return length;
+    
+        fcal = (struct fcal *)host->hostdata;
+        fc = fcal->fc;
+
+#ifdef __sparc__
+        SPRINTF ("Sun Enterprise Network Array (A5000 or E?500) on %s PROM node %x\n", fc->name, fc->dev->prom_node);
+#else
+        SPRINTF ("Fibre Channel Arbitrated Loop on %s\n", fc->name);
+#endif
+        SPRINTF ("Initiator AL-PA: %02x\n", fc->sid);
+
+        SPRINTF ("\nAttached devices:\n");
+        
+        for (i = 0; i < fc->posmap->len; i++) {
+                unsigned char alpa = fc->posmap->list[i];
+                unsigned char target;
+                u32 *u1, *u2;
+                
+                target = alpa2target[alpa];
+                u1 = (u32 *)&fcal->nport_wwn[target];
+                u2 = (u32 *)&fcal->node_wwn[target];
+                if (!u1[0] && !u1[1]) {
+                        SPRINTF ("  [AL-PA: %02x] Not responded to PLOGI\n", alpa);
+                } else if (!fcal->map[target]) {
+                        SPRINTF ("  [AL-PA: %02x, Port WWN: %08x%08x, Node WWN: %08x%08x] Not responded to PRLI\n",
+                                 alpa, u1[0], u1[1], u2[0], u2[1]);
+                } else {
+                        Scsi_Device *scd;
+                        shost_for_each_device(scd, host)
+                                if (scd->id == target) {
+                                        SPRINTF ("  [AL-PA: %02x, Id: %02d, Port WWN: %08x%08x, Node WWN: %08x%08x]  ",
+                                                alpa, target, u1[0], u1[1], u2[0], u2[1]);
+                                        SPRINTF ("%s ", (scd->type < MAX_SCSI_DEVICE_CODE) ?
+                                                scsi_device_types[(short) scd->type] : "Unknown device");
+
+                                        for (j = 0; (j < 8) && (scd->vendor[j] >= 0x20); j++)
+                                                SPRINTF ("%c", scd->vendor[j]);
+                                        SPRINTF (" ");
+
+                                        for (j = 0; (j < 16) && (scd->model[j] >= 0x20); j++)
+                                                SPRINTF ("%c", scd->model[j]);
+                
+                                        SPRINTF ("\n");
+                                }
+                }
+        }
+        SPRINTF ("\n");
+
+        *start = buffer + offset;
+
+        if ((pos - buffer) < offset)
+                return 0;
+        else if (pos - buffer - offset < length)
+                return pos - buffer - offset;
+        else
+                return length;
+}
+
+/* 
+   For FC-AL, we use a simple addressing: we have just one channel 0,
+   and all AL-PAs are mapped to targets 0..0x7e
+ */
+static int fcal_encode_addr(Scsi_Cmnd *SCpnt, u16 *addr, fc_channel *fc, fcp_cmnd *fcmd)
+{
+        struct fcal *f;
+        
+        /* We don't support LUNs yet - I'm not sure if LUN should be in SCSI fcp_cdb, or in second byte of addr[0] */
+        if (SCpnt->cmnd[1] & 0xe0) return -EINVAL;
+        /* FC-PLDA tells us... */
+        memset(addr, 0, 8);
+        f = (struct fcal *)SCpnt->device->host->hostdata;
+        if (!f->map[SCpnt->device->id])
+                return -EINVAL;
+        /* Now, determine DID: It will be Native Identifier, so we zero upper
+           2 bytes of the 3 byte DID, lowest byte will be AL-PA */
+        fcmd->did = target2alpa[SCpnt->device->id];
+        FCALD(("trying DID %06x\n", fcmd->did))
+        return 0;
+}
+
+static Scsi_Host_Template driver_template = {
+        .name                   = "Fibre Channel Arbitrated Loop",
+        .detect                 = fcal_detect,
+        .release                = fcal_release, 
+        .proc_info              = fcal_proc_info,
+        .queuecommand           = fcp_scsi_queuecommand,
+        .slave_configure        = fcal_slave_configure,
+        .can_queue              = FCAL_CAN_QUEUE,
+        .this_id                = -1,
+        .sg_tablesize           = 1,
+        .cmd_per_lun            = 1,
+        .use_clustering         = ENABLE_CLUSTERING,
+        .eh_abort_handler       = fcp_scsi_abort,
+        .eh_device_reset_handler = fcp_scsi_dev_reset,
+        .eh_bus_reset_handler   = fcp_scsi_bus_reset,
+        .eh_host_reset_handler  = fcp_scsi_host_reset,
+};
+#include "scsi_module.c"
+
+MODULE_LICENSE("GPL");
+