[SCSI] qla2xxx: Remove unused port-type RSCN handling code.

Expandind on the previous commit:

	commit 79f89a42
	Author: andrew.vasquez@qlogic.com <andrew.vasquez@qlogic.com>
	Date:   Fri Jan 13 17:05:58 2006 -0800

	[SCSI] qla2xxx: Disable port-type RSCN handling via driver state-machine.

and given:

- the process-context requirements of the FC transport
  rport-APIs.
- lack of port-type RSCN processing logic for ISP24xx and newer
  chips.

it's time now to remove the state-machine logic from mainline.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/qla2xxx/Makefile

 EXTRA_CFLAGS += -DUNIQUE_FW_NAME
 
 qla2xxx-y := qla_os.o qla_init.o qla_mbx.o qla_iocb.o qla_isr.o qla_gs.o \
-		qla_dbg.o qla_sup.o qla_rscn.o qla_attr.o
+		qla_dbg.o qla_sup.o qla_attr.o
 
 obj-$(CONFIG_SCSI_QLA_FC) += qla2xxx.o
 

drivers/scsi/qla2xxx/qla_def.h

@@ -1523,8 +1523,6 @@ typedef struct fc_port {
 
 	unsigned int os_target_id;
 
-	uint16_t iodesc_idx_sent;
-
 	int port_login_retry_count;
 	int login_retry;
 	atomic_t port_down_timer;
@@ -1940,34 +1938,6 @@ struct sns_cmd_pkt {
 	} p;
 };
 
-/* IO descriptors */
-#define MAX_IO_DESCRIPTORS	32
-
-#define ABORT_IOCB_CB		0
-#define ADISC_PORT_IOCB_CB	1
-#define LOGOUT_PORT_IOCB_CB	2
-#define LOGIN_PORT_IOCB_CB	3
-#define LAST_IOCB_CB		4
-
-#define IODESC_INVALID_INDEX	0xFFFF
-#define IODESC_ADISC_NEEDED	0xFFFE
-#define IODESC_LOGIN_NEEDED	0xFFFD
-
-struct io_descriptor {
-	uint16_t used:1;
-	uint16_t idx:11;
-	uint16_t cb_idx:4;
-
-	struct timer_list timer;
-
-	struct scsi_qla_host *ha;
-
-	port_id_t d_id;
-	fc_port_t *remote_fcport;
-
-	uint32_t signature;
-};
-
 struct qla_fw_info {
 	unsigned short addressing;	/* addressing method used to load fw */
 #define FW_INFO_ADDR_NORMAL	0
@@ -2271,10 +2241,6 @@ typedef struct scsi_qla_host {
 
 	/* Fibre Channel Device List. */
 	struct list_head	fcports;
-	struct list_head	rscn_fcports;
-
-	struct io_descriptor	io_descriptors[MAX_IO_DESCRIPTORS];
-	uint16_t		iodesc_signature;
 
 	/* RSCN queue. */
 	uint32_t rscn_queue[MAX_RSCN_COUNT];
@@ -2313,9 +2279,6 @@ typedef struct scsi_qla_host {
 	init_cb_t	*init_cb;
 	int		init_cb_size;
 
-	dma_addr_t	iodesc_pd_dma;
-	port_database_t *iodesc_pd;
-
 	/* These are used by mailbox operations. */
 	volatile uint16_t mailbox_out[MAILBOX_REGISTER_COUNT];
 

drivers/scsi/qla2xxx/qla_gbl.h

@@ -64,7 +64,6 @@ extern int qlport_down_retry;
 extern int ql2xplogiabsentdevice;
 extern int ql2xloginretrycount;
 extern int ql2xfdmienable;
-extern int ql2xprocessrscn;
 
 extern void qla2x00_sp_compl(scsi_qla_host_t *, srb_t *);
 
@@ -283,15 +282,6 @@ extern void *qla2x00_prep_ms_fdmi_iocb(scsi_qla_host_t *, uint32_t, uint32_t);
 extern void *qla24xx_prep_ms_fdmi_iocb(scsi_qla_host_t *, uint32_t, uint32_t);
 extern int qla2x00_fdmi_register(scsi_qla_host_t *);
 
-/*
- * Global Function Prototypes in qla_rscn.c source file.
- */
-extern fc_port_t *qla2x00_alloc_rscn_fcport(scsi_qla_host_t *, gfp_t);
-extern int qla2x00_handle_port_rscn(scsi_qla_host_t *, uint32_t, fc_port_t *,
-    int);
-extern void qla2x00_process_iodesc(scsi_qla_host_t *, struct mbx_entry *);
-extern void qla2x00_cancel_io_descriptors(scsi_qla_host_t *);
-
 /*
  * Global Function Prototypes in qla_xioctl.c source file.
  */

drivers/scsi/qla2xxx/qla_init.c

@@ -1708,7 +1708,6 @@ qla2x00_alloc_fcport(scsi_qla_host_t *ha, gfp_t flags)
 	fcport->ha = ha;
 	fcport->port_type = FCT_UNKNOWN;
 	fcport->loop_id = FC_NO_LOOP_ID;
-	fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
 	atomic_set(&fcport->state, FCS_UNCONFIGURED);
 	fcport->flags = FCF_RLC_SUPPORT;
 	fcport->supported_classes = FC_COS_UNSPECIFIED;
@@ -2563,7 +2562,6 @@ static int
 qla2x00_device_resync(scsi_qla_host_t *ha)
 {
 	int	rval;
-	int	rval2;
 	uint32_t mask;
 	fc_port_t *fcport;
 	uint32_t rscn_entry;
@@ -2619,17 +2617,6 @@ qla2x00_device_resync(scsi_qla_host_t *ha)
 
 		switch (format) {
 		case 0:
-			if (ql2xprocessrscn &&
-			    !IS_QLA2100(ha) && !IS_QLA2200(ha) &&
-			    !IS_QLA6312(ha) && !IS_QLA6322(ha) &&
-			    !IS_QLA24XX(ha) && !IS_QLA54XX(ha) &&
-			    ha->flags.init_done) {
-				/* Handle port RSCN via asyncronous IOCBs */
-				rval2 = qla2x00_handle_port_rscn(ha, rscn_entry,
-				    NULL, 0);
-				if (rval2 == QLA_SUCCESS)
-					continue;
-			}
 			mask = 0xffffff;
 			break;
 		case 1:
@@ -2647,10 +2634,6 @@ qla2x00_device_resync(scsi_qla_host_t *ha)
 
 		rval = QLA_SUCCESS;
 
-		/* Abort any outstanding IO descriptors. */
-		if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
-			qla2x00_cancel_io_descriptors(ha);
-
 		list_for_each_entry(fcport, &ha->fcports, list) {
 			if ((fcport->flags & FCF_FABRIC_DEVICE) == 0 ||
 			    (fcport->d_id.b24 & mask) != d_id.b24 ||

drivers/scsi/qla2xxx/qla_isr.c

@@ -514,47 +514,6 @@ qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
 		break;
 
 	case MBA_PORT_UPDATE:		/* Port database update */
-		/*
-		 * If a single remote port just logged into (or logged out of)
-		 * us, create a new entry in our rscn fcports list and handle
-		 * the event like an RSCN.
-		 */
-		if (ql2xprocessrscn &&
-		    !IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
-		    !IS_QLA6322(ha) && !IS_QLA24XX(ha) && !IS_QLA54XX(ha) &&
-		    ha->flags.init_done && mb[1] != 0xffff &&
-		    ((ha->operating_mode == P2P && mb[1] != 0) ||
-		    (ha->operating_mode != P2P && mb[1] !=
-			SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
-			int rval;
-			fc_port_t *rscn_fcport;
-
-			/* Create new fcport for login. */
-			rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
-			if (rscn_fcport) {
-				DEBUG14(printk("scsi(%ld): Port Update -- "
-				    "creating RSCN fcport %p for %x/%x/%x.\n",
-				    ha->host_no, rscn_fcport, mb[1], mb[2],
-				    mb[3]));
-
-				rscn_fcport->loop_id = mb[1];
-				rscn_fcport->d_id.b24 = INVALID_PORT_ID;
-				atomic_set(&rscn_fcport->state,
-				    FCS_DEVICE_LOST);
-				list_add_tail(&rscn_fcport->list,
-				    &ha->rscn_fcports);
-
-				rval = qla2x00_handle_port_rscn(ha, 0,
-				    rscn_fcport, 1);
-				if (rval == QLA_SUCCESS)
-					break;
-			} else {
-				DEBUG14(printk("scsi(%ld): Port Update -- "
-				    "-- unable to allocate RSCN fcport "
-				    "login.\n", ha->host_no));
-			}
-		}
-
 		/*
 		 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
 		 * event etc. earlier indicating loop is down) then process
@@ -753,25 +712,6 @@ qla2x00_process_response_queue(struct scsi_qla_host *ha)
 		case MS_IOCB_TYPE:
 			qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
 			break;
-		case MBX_IOCB_TYPE:
-			if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
-			    !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
-				if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
-					qla2x00_process_iodesc(ha,
-					    (struct mbx_entry *)pkt);
-				} else {
-					/* MBX IOCB Type Not Supported. */
-					DEBUG4(printk(KERN_WARNING
-					    "scsi(%ld): Received unknown MBX "
-					    "IOCB response pkt type=%x "
-					    "source=%x entry status=%x.\n",
-					    ha->host_no, pkt->entry_type,
-					    pkt->sys_define,
-					    pkt->entry_status));
-				}
-				break;
-			}
-			/* Fallthrough. */
 		default:
 			/* Type Not Supported. */
 			DEBUG4(printk(KERN_WARNING

drivers/scsi/qla2xxx/qla_os.c

@@ -71,12 +71,6 @@ MODULE_PARM_DESC(ql2xfdmienable,
 		"Enables FDMI registratons "
 		"Default is 0 - no FDMI. 1 - perfom FDMI.");
 
-int ql2xprocessrscn;
-module_param(ql2xprocessrscn, int, S_IRUGO|S_IRUSR);
-MODULE_PARM_DESC(ql2xprocessrscn,
-		"Option to enable port RSCN handling via a series of less"
-		"fabric intrusive ADISCs and PLOGIs.");
-
 /*
  * SCSI host template entry points
  */
@@ -1492,7 +1486,6 @@ int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
 
 	INIT_LIST_HEAD(&ha->list);
 	INIT_LIST_HEAD(&ha->fcports);
-	INIT_LIST_HEAD(&ha->rscn_fcports);
 
 	/*
 	 * These locks are used to prevent more than one CPU
@@ -1669,10 +1662,6 @@ EXPORT_SYMBOL_GPL(qla2x00_remove_one);
 static void
 qla2x00_free_device(scsi_qla_host_t *ha)
 {
-	/* Abort any outstanding IO descriptors. */
-	if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
-		qla2x00_cancel_io_descriptors(ha);
-
 	/* Disable timer */
 	if (ha->timer_active)
 		qla2x00_stop_timer(ha);
@@ -1909,21 +1898,6 @@ qla2x00_mem_alloc(scsi_qla_host_t *ha)
 		}
 		memset(ha->init_cb, 0, ha->init_cb_size);
 
-		/* Get consistent memory allocated for Get Port Database cmd */
-		ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
-		    &ha->iodesc_pd_dma);
-		if (ha->iodesc_pd == NULL) {
-			/* error */
-			qla_printk(KERN_WARNING, ha,
-			    "Memory Allocation failed - iodesc_pd\n");
-
-			qla2x00_mem_free(ha);
-			msleep(100);
-
-			continue;
-		}
-		memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
-
 		/* Allocate ioctl related memory. */
 		if (qla2x00_alloc_ioctl_mem(ha)) {
 			qla_printk(KERN_WARNING, ha,
@@ -2048,9 +2022,6 @@ qla2x00_mem_free(scsi_qla_host_t *ha)
 	if (ha->ms_iocb)
 		dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
 
-	if (ha->iodesc_pd)
-		dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
-
 	if (ha->init_cb)
 		dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
 
@@ -2077,8 +2048,6 @@ qla2x00_mem_free(scsi_qla_host_t *ha)
 	ha->ct_sns_dma = 0;
 	ha->ms_iocb = NULL;
 	ha->ms_iocb_dma = 0;
-	ha->iodesc_pd = NULL;
-	ha->iodesc_pd_dma = 0;
 	ha->init_cb = NULL;
 	ha->init_cb_dma = 0;