[SCSI] cxgb3i: change cxgb3i to use libcxgbi

Signed-off-by: Karen Xie <kxie@chelsio.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/Kconfig

@@ -378,7 +378,6 @@ config ISCSI_BOOT_SYSFS
 	  via sysfs to userspace. If you wish to export this information,
 	  say Y. Otherwise, say N.
 
-source "drivers/scsi/cxgb3i/Kconfig"
 source "drivers/scsi/cxgbi/Kconfig"
 source "drivers/scsi/bnx2i/Kconfig"
 source "drivers/scsi/be2iscsi/Kconfig"

drivers/scsi/Makefile

@@ -133,7 +133,7 @@ obj-$(CONFIG_SCSI_HPTIOP)	+= hptiop.o
 obj-$(CONFIG_SCSI_STEX)		+= stex.o
 obj-$(CONFIG_SCSI_MVSAS)	+= mvsas/
 obj-$(CONFIG_PS3_ROM)		+= ps3rom.o
-obj-$(CONFIG_SCSI_CXGB3_ISCSI)	+= libiscsi.o libiscsi_tcp.o cxgb3i/
+obj-$(CONFIG_SCSI_CXGB3_ISCSI)	+= libiscsi.o libiscsi_tcp.o cxgbi/
 obj-$(CONFIG_SCSI_CXGB4_ISCSI)	+= libiscsi.o libiscsi_tcp.o cxgbi/
 obj-$(CONFIG_SCSI_BNX2_ISCSI)	+= libiscsi.o bnx2i/
 obj-$(CONFIG_BE2ISCSI)		+= libiscsi.o be2iscsi/

drivers/scsi/cxgb3i/cxgb3i.h

-/*
- * cxgb3i.h: Chelsio S3xx iSCSI driver.
- *
- * Copyright (c) 2008 Chelsio Communications, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- *
- * Written by: Karen Xie (kxie@chelsio.com)
- */
-
-#ifndef __CXGB3I_H__
-#define __CXGB3I_H__
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/list.h>
-#include <linux/netdevice.h>
-#include <linux/scatterlist.h>
-#include <linux/skbuff.h>
-#include <scsi/libiscsi_tcp.h>
-
-/* from cxgb3 LLD */
-#include "common.h"
-#include "t3_cpl.h"
-#include "t3cdev.h"
-#include "cxgb3_ctl_defs.h"
-#include "cxgb3_offload.h"
-#include "firmware_exports.h"
-
-#include "cxgb3i_offload.h"
-#include "cxgb3i_ddp.h"
-
-#define CXGB3I_SCSI_HOST_QDEPTH 1024
-#define CXGB3I_MAX_TARGET	CXGB3I_MAX_CONN
-#define CXGB3I_MAX_LUN		512
-#define ISCSI_PDU_NONPAYLOAD_MAX \
-	(sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE + 2*ISCSI_DIGEST_SIZE)
-
-struct cxgb3i_adapter;
-struct cxgb3i_hba;
-struct cxgb3i_endpoint;
-
-/**
- * struct cxgb3i_hba - cxgb3i iscsi structure (per port)
- *
- * @snic:	cxgb3i adapter containing this port
- * @ndev:	pointer to netdev structure
- * @shost:	pointer to scsi host structure
- */
-struct cxgb3i_hba {
-	struct cxgb3i_adapter *snic;
-	struct net_device *ndev;
-	struct Scsi_Host *shost;
-};
-
-/**
- * struct cxgb3i_adapter - cxgb3i adapter structure (per pci)
- *
- * @listhead:	list head to link elements
- * @lock:	lock for this structure
- * @tdev:	pointer to t3cdev used by cxgb3 driver
- * @pdev:	pointer to pci dev
- * @hba_cnt:	# of hbas (the same as # of ports)
- * @hba:	all the hbas on this adapter
- * @flags:	bit flag for adapter event/status
- * @tx_max_size: max. tx packet size supported
- * @rx_max_size: max. rx packet size supported
- * @tag_format: ddp tag format settings
- */
-#define CXGB3I_ADAPTER_FLAG_RESET	0x1
-struct cxgb3i_adapter {
-	struct list_head list_head;
-	spinlock_t lock;
-	struct t3cdev *tdev;
-	struct pci_dev *pdev;
-	unsigned char hba_cnt;
-	struct cxgb3i_hba *hba[MAX_NPORTS];
-
-	unsigned int flags;
-	unsigned int tx_max_size;
-	unsigned int rx_max_size;
-
-	struct cxgb3i_tag_format tag_format;
-};
-
-/**
- * struct cxgb3i_conn - cxgb3i iscsi connection
- *
- * @listhead:	list head to link elements
- * @cep:	pointer to iscsi_endpoint structure
- * @conn:	pointer to iscsi_conn structure
- * @hba:	pointer to the hba this conn. is going through
- * @task_idx_bits: # of bits needed for session->cmds_max
- */
-struct cxgb3i_conn {
-	struct list_head list_head;
-	struct cxgb3i_endpoint *cep;
-	struct iscsi_conn *conn;
-	struct cxgb3i_hba *hba;
-	unsigned int task_idx_bits;
-};
-
-/**
- * struct cxgb3i_endpoint - iscsi tcp endpoint
- *
- * @c3cn:	the h/w tcp connection representation
- * @hba:	pointer to the hba this conn. is going through
- * @cconn:	pointer to the associated cxgb3i iscsi connection
- */
-struct cxgb3i_endpoint {
-	struct s3_conn *c3cn;
-	struct cxgb3i_hba *hba;
-	struct cxgb3i_conn *cconn;
-};
-
-/**
- * struct cxgb3i_task_data - private iscsi task data
- *
- * @nr_frags:	# of coalesced page frags (from scsi sgl)
- * @frags:	coalesced page frags (from scsi sgl)
- * @skb:	tx pdu skb
- * @offset:	data offset for the next pdu
- * @count:	max. possible pdu payload
- * @sgoffset:	offset to the first sg entry for a given offset
- */
-#define MAX_PDU_FRAGS	((ULP2_MAX_PDU_PAYLOAD + 512 - 1) / 512)
-struct cxgb3i_task_data {
-	unsigned short nr_frags;
-	skb_frag_t frags[MAX_PDU_FRAGS];
-	struct sk_buff *skb;
-	unsigned int offset;
-	unsigned int count;
-	unsigned int sgoffset;
-};
-
-int cxgb3i_iscsi_init(void);
-void cxgb3i_iscsi_cleanup(void);
-
-struct cxgb3i_adapter *cxgb3i_adapter_find_by_tdev(struct t3cdev *);
-void cxgb3i_adapter_open(struct t3cdev *);
-void cxgb3i_adapter_close(struct t3cdev *);
-
-struct cxgb3i_hba *cxgb3i_hba_host_add(struct cxgb3i_adapter *,
-				       struct net_device *);
-void cxgb3i_hba_host_remove(struct cxgb3i_hba *);
-
-int cxgb3i_pdu_init(void);
-void cxgb3i_pdu_cleanup(void);
-void cxgb3i_conn_cleanup_task(struct iscsi_task *);
-int cxgb3i_conn_alloc_pdu(struct iscsi_task *, u8);
-int cxgb3i_conn_init_pdu(struct iscsi_task *, unsigned int, unsigned int);
-int cxgb3i_conn_xmit_pdu(struct iscsi_task *);
-
-void cxgb3i_release_itt(struct iscsi_task *task, itt_t hdr_itt);
-int cxgb3i_reserve_itt(struct iscsi_task *task, itt_t *hdr_itt);
-
-#endif

drivers/scsi/cxgb3i/cxgb3i_ddp.h

-/*
- * cxgb3i_ddp.h: Chelsio S3xx iSCSI DDP Manager.
- *
- * Copyright (c) 2008 Chelsio Communications, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- *
- * Written by: Karen Xie (kxie@chelsio.com)
- */
-
-#ifndef __CXGB3I_ULP2_DDP_H__
-#define __CXGB3I_ULP2_DDP_H__
-
-#include <linux/slab.h>
-#include <linux/vmalloc.h>
-
-/**
- * struct cxgb3i_tag_format - cxgb3i ulp tag format for an iscsi entity
- *
- * @sw_bits:	# of bits used by iscsi software layer
- * @rsvd_bits:	# of bits used by h/w
- * @rsvd_shift:	h/w bits shift left
- * @rsvd_mask:	reserved bit mask
- */
-struct cxgb3i_tag_format {
-	unsigned char sw_bits;
-	unsigned char rsvd_bits;
-	unsigned char rsvd_shift;
-	unsigned char filler[1];
-	u32 rsvd_mask;
-};
-
-/**
- * struct cxgb3i_gather_list - cxgb3i direct data placement memory
- *
- * @tag:	ddp tag
- * @length:	total data buffer length
- * @offset:	initial offset to the 1st page
- * @nelem:	# of pages
- * @pages:	page pointers
- * @phys_addr:	physical address
- */
-struct cxgb3i_gather_list {
-	u32 tag;
-	unsigned int length;
-	unsigned int offset;
-	unsigned int nelem;
-	struct page **pages;
-	dma_addr_t phys_addr[0];
-};
-
-/**
- * struct cxgb3i_ddp_info - cxgb3i direct data placement for pdu payload
- *
- * @list:	list head to link elements
- * @refcnt:	ref. count
- * @tdev:	pointer to t3cdev used by cxgb3 driver
- * @max_txsz:	max tx packet size for ddp
- * @max_rxsz:	max rx packet size for ddp
- * @llimit:	lower bound of the page pod memory
- * @ulimit:	upper bound of the page pod memory
- * @nppods:	# of page pod entries
- * @idx_last:	page pod entry last used
- * @idx_bits:	# of bits the pagepod index would take
- * @idx_mask:	pagepod index mask
- * @rsvd_tag_mask: tag mask
- * @map_lock:	lock to synchonize access to the page pod map
- * @gl_map:	ddp memory gather list
- * @gl_skb:	skb used to program the pagepod
- */
-struct cxgb3i_ddp_info {
-	struct list_head list;
-	struct kref refcnt;
-	struct t3cdev *tdev;
-	struct pci_dev *pdev;
-	unsigned int max_txsz;
-	unsigned int max_rxsz;
-	unsigned int llimit;
-	unsigned int ulimit;
-	unsigned int nppods;
-	unsigned int idx_last;
-	unsigned char idx_bits;
-	unsigned char filler[3];
-	u32 idx_mask;
-	u32 rsvd_tag_mask;
-	spinlock_t map_lock;
-	struct cxgb3i_gather_list **gl_map;
-	struct sk_buff **gl_skb;
-};
-
-#define ISCSI_PDU_NONPAYLOAD_LEN	312 /* bhs(48) + ahs(256) + digest(8) */
-#define ULP2_MAX_PKT_SIZE	16224
-#define ULP2_MAX_PDU_PAYLOAD	(ULP2_MAX_PKT_SIZE - ISCSI_PDU_NONPAYLOAD_LEN)
-#define PPOD_PAGES_MAX		4
-#define PPOD_PAGES_SHIFT	2	/* 4 pages per pod */
-
-/*
- * struct pagepod_hdr, pagepod - pagepod format
- */
-struct pagepod_hdr {
-	u32 vld_tid;
-	u32 pgsz_tag_clr;
-	u32 maxoffset;
-	u32 pgoffset;
-	u64 rsvd;
-};
-
-struct pagepod {
-	struct pagepod_hdr hdr;
-	u64 addr[PPOD_PAGES_MAX + 1];
-};
-
-#define PPOD_SIZE		sizeof(struct pagepod)	/* 64 */
-#define PPOD_SIZE_SHIFT		6
-
-#define PPOD_COLOR_SHIFT	0
-#define PPOD_COLOR_SIZE		6
-#define PPOD_COLOR_MASK		((1 << PPOD_COLOR_SIZE) - 1)
-
-#define PPOD_IDX_SHIFT		PPOD_COLOR_SIZE
-#define PPOD_IDX_MAX_SIZE	24
-
-#define S_PPOD_TID    0
-#define M_PPOD_TID    0xFFFFFF
-#define V_PPOD_TID(x) ((x) << S_PPOD_TID)
-
-#define S_PPOD_VALID    24
-#define V_PPOD_VALID(x) ((x) << S_PPOD_VALID)
-#define F_PPOD_VALID    V_PPOD_VALID(1U)
-
-#define S_PPOD_COLOR    0
-#define M_PPOD_COLOR    0x3F
-#define V_PPOD_COLOR(x) ((x) << S_PPOD_COLOR)
-
-#define S_PPOD_TAG    6
-#define M_PPOD_TAG    0xFFFFFF
-#define V_PPOD_TAG(x) ((x) << S_PPOD_TAG)
-
-#define S_PPOD_PGSZ    30
-#define M_PPOD_PGSZ    0x3
-#define V_PPOD_PGSZ(x) ((x) << S_PPOD_PGSZ)
-
-/*
- * large memory chunk allocation/release
- * use vmalloc() if kmalloc() fails
- */
-static inline void *cxgb3i_alloc_big_mem(unsigned int size,
-					 gfp_t gfp)
-{
-	void *p = kmalloc(size, gfp);
-	if (!p)
-		p = vmalloc(size);
-	if (p)
-		memset(p, 0, size);
-	return p;
-}
-
-static inline void cxgb3i_free_big_mem(void *addr)
-{
-	if (is_vmalloc_addr(addr))
-		vfree(addr);
-	else
-		kfree(addr);
-}
-
-/*
- * cxgb3i ddp tag are 32 bits, it consists of reserved bits used by h/w and
- * non-reserved bits that can be used by the iscsi s/w.
- * The reserved bits are identified by the rsvd_bits and rsvd_shift fields
- * in struct cxgb3i_tag_format.
- *
- * The upper most reserved bit can be used to check if a tag is ddp tag or not:
- * 	if the bit is 0, the tag is a valid ddp tag
- */
-
-/**
- * cxgb3i_is_ddp_tag - check if a given tag is a hw/ddp tag
- * @tformat: tag format information
- * @tag: tag to be checked
- *
- * return true if the tag is a ddp tag, false otherwise.
- */
-static inline int cxgb3i_is_ddp_tag(struct cxgb3i_tag_format *tformat, u32 tag)
-{
-	return !(tag & (1 << (tformat->rsvd_bits + tformat->rsvd_shift - 1)));
-}
-
-/**
- * cxgb3i_sw_tag_usable - check if s/w tag has enough bits left for hw bits
- * @tformat: tag format information
- * @sw_tag: s/w tag to be checked
- *
- * return true if the tag can be used for hw ddp tag, false otherwise.
- */
-static inline int cxgb3i_sw_tag_usable(struct cxgb3i_tag_format *tformat,
-					u32 sw_tag)
-{
-	sw_tag >>= (32 - tformat->rsvd_bits);
-	return !sw_tag;
-}
-
-/**
- * cxgb3i_set_non_ddp_tag - mark a given s/w tag as an invalid ddp tag
- * @tformat: tag format information
- * @sw_tag: s/w tag to be checked
- *
- * insert 1 at the upper most reserved bit to mark it as an invalid ddp tag.
- */
-static inline u32 cxgb3i_set_non_ddp_tag(struct cxgb3i_tag_format *tformat,
-					 u32 sw_tag)
-{
-	unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1;
-	u32 mask = (1 << shift) - 1;
-
-	if (sw_tag && (sw_tag & ~mask)) {
-		u32 v1 = sw_tag & ((1 << shift) - 1);
-		u32 v2 = (sw_tag >> (shift - 1)) << shift;
-
-		return v2 | v1 | 1 << shift;
-	}
-	return sw_tag | 1 << shift;
-}
-
-/**
- * cxgb3i_ddp_tag_base - shift s/w tag bits so that reserved bits are not used
- * @tformat: tag format information
- * @sw_tag: s/w tag to be checked
- */
-static inline u32 cxgb3i_ddp_tag_base(struct cxgb3i_tag_format *tformat,
-				      u32 sw_tag)
-{
-	u32 mask = (1 << tformat->rsvd_shift) - 1;
-
-	if (sw_tag && (sw_tag & ~mask)) {
-		u32 v1 = sw_tag & mask;
-		u32 v2 = sw_tag >> tformat->rsvd_shift;
-
-		v2 <<= tformat->rsvd_shift + tformat->rsvd_bits;
-		return v2 | v1;
-	}
-	return sw_tag;
-}
-
-/**
- * cxgb3i_tag_rsvd_bits - get the reserved bits used by the h/w
- * @tformat: tag format information
- * @tag: tag to be checked
- *
- * return the reserved bits in the tag
- */
-static inline u32 cxgb3i_tag_rsvd_bits(struct cxgb3i_tag_format *tformat,
-				       u32 tag)
-{
-	if (cxgb3i_is_ddp_tag(tformat, tag))
-		return (tag >> tformat->rsvd_shift) & tformat->rsvd_mask;
-	return 0;
-}
-
-/**
- * cxgb3i_tag_nonrsvd_bits - get the non-reserved bits used by the s/w
- * @tformat: tag format information
- * @tag: tag to be checked
- *
- * return the non-reserved bits in the tag.
- */
-static inline u32 cxgb3i_tag_nonrsvd_bits(struct cxgb3i_tag_format *tformat,
-					  u32 tag)
-{
-	unsigned char shift = tformat->rsvd_bits + tformat->rsvd_shift - 1;
-	u32 v1, v2;
-
-	if (cxgb3i_is_ddp_tag(tformat, tag)) {
-		v1 = tag & ((1 << tformat->rsvd_shift) - 1);
-		v2 = (tag >> (shift + 1)) << tformat->rsvd_shift;
-	} else {
-		u32 mask = (1 << shift) - 1;
-
-		tag &= ~(1 << shift);
-		v1 = tag & mask;
-		v2 = (tag >> 1) & ~mask;
-	}
-	return v1 | v2;
-}
-
-int cxgb3i_ddp_tag_reserve(struct t3cdev *, unsigned int tid,
-			   struct cxgb3i_tag_format *, u32 *tag,
-			   struct cxgb3i_gather_list *, gfp_t gfp);
-void cxgb3i_ddp_tag_release(struct t3cdev *, u32 tag);
-
-struct cxgb3i_gather_list *cxgb3i_ddp_make_gl(unsigned int xferlen,
-				struct scatterlist *sgl,
-				unsigned int sgcnt,
-				struct pci_dev *pdev,
-				gfp_t gfp);
-void cxgb3i_ddp_release_gl(struct cxgb3i_gather_list *gl,
-				struct pci_dev *pdev);
-
-int cxgb3i_setup_conn_host_pagesize(struct t3cdev *, unsigned int tid,
-				    int reply);
-int cxgb3i_setup_conn_pagesize(struct t3cdev *, unsigned int tid, int reply,
-			       unsigned long pgsz);
-int cxgb3i_setup_conn_digest(struct t3cdev *, unsigned int tid,
-				int hcrc, int dcrc, int reply);
-int cxgb3i_ddp_find_page_index(unsigned long pgsz);
-int cxgb3i_adapter_ddp_info(struct t3cdev *, struct cxgb3i_tag_format *,
-			    unsigned int *txsz, unsigned int *rxsz);
-
-void cxgb3i_ddp_init(struct t3cdev *);
-void cxgb3i_ddp_cleanup(struct t3cdev *);
-#endif

drivers/scsi/cxgb3i/cxgb3i_init.c

-/* cxgb3i_init.c: Chelsio S3xx iSCSI driver.
- *
- * Copyright (c) 2008 Chelsio Communications, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation.
- *
- * Written by: Karen Xie (kxie@chelsio.com)
- */
-
-#include "cxgb3i.h"
-
-#define DRV_MODULE_NAME         "cxgb3i"
-#define DRV_MODULE_VERSION	"1.0.2"
-#define DRV_MODULE_RELDATE	"Mar. 2009"
-
-static char version[] =
-	"Chelsio S3xx iSCSI Driver " DRV_MODULE_NAME
-	" v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
-
-MODULE_AUTHOR("Karen Xie <kxie@chelsio.com>");
-MODULE_DESCRIPTION("Chelsio S3xx iSCSI Driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRV_MODULE_VERSION);
-
-static void open_s3_dev(struct t3cdev *);
-static void close_s3_dev(struct t3cdev *);
-static void s3_event_handler(struct t3cdev *tdev, u32 event, u32 port);
-
-static cxgb3_cpl_handler_func cxgb3i_cpl_handlers[NUM_CPL_CMDS];
-static struct cxgb3_client t3c_client = {
-	.name = "iscsi_cxgb3",
-	.handlers = cxgb3i_cpl_handlers,
-	.add = open_s3_dev,
-	.remove = close_s3_dev,
-	.event_handler = s3_event_handler,
-};
-
-/**
- * open_s3_dev - register with cxgb3 LLD
- * @t3dev:	cxgb3 adapter instance
- */
-static void open_s3_dev(struct t3cdev *t3dev)
-{
-	static int vers_printed;
-
-	if (!vers_printed) {
-		printk(KERN_INFO "%s", version);
-		vers_printed = 1;
-	}
-
-	cxgb3i_ddp_init(t3dev);
-	cxgb3i_sdev_add(t3dev, &t3c_client);
-	cxgb3i_adapter_open(t3dev);
-}
-
-/**
- * close_s3_dev - de-register with cxgb3 LLD
- * @t3dev:	cxgb3 adapter instance
- */
-static void close_s3_dev(struct t3cdev *t3dev)
-{
-	cxgb3i_adapter_close(t3dev);
-	cxgb3i_sdev_remove(t3dev);
-	cxgb3i_ddp_cleanup(t3dev);
-}
-
-static void s3_event_handler(struct t3cdev *tdev, u32 event, u32 port)
-{
-	struct cxgb3i_adapter *snic = cxgb3i_adapter_find_by_tdev(tdev);
-
-	cxgb3i_log_info("snic 0x%p, tdev 0x%p, event 0x%x, port 0x%x.\n",
-			snic, tdev, event, port);
-	if (!snic)
-		return;
-
-	switch (event) {
-	case OFFLOAD_STATUS_DOWN:
-		snic->flags |= CXGB3I_ADAPTER_FLAG_RESET;
-		break;
-	case OFFLOAD_STATUS_UP:
-		snic->flags &= ~CXGB3I_ADAPTER_FLAG_RESET;
-		break;
-	}
-}
-
-/**
- * cxgb3i_init_module - module init entry point
- *
- * initialize any driver wide global data structures and register itself
- *	with the cxgb3 module
- */
-static int __init cxgb3i_init_module(void)
-{
-	int err;
-
-	err = cxgb3i_sdev_init(cxgb3i_cpl_handlers);
-	if (err < 0)
-		return err;
-
-	err = cxgb3i_iscsi_init();
-	if (err < 0)
-		return err;
-
-	err = cxgb3i_pdu_init();
-	if (err < 0) {
-		cxgb3i_iscsi_cleanup();
-		return err;
-	}
-
-	cxgb3_register_client(&t3c_client);
-
-	return 0;
-}
-
-/**
- * cxgb3i_exit_module - module cleanup/exit entry point
- *
- * go through the driver hba list and for each hba, release any resource held.
- *	and unregisters iscsi transport and the cxgb3 module
- */
-static void __exit cxgb3i_exit_module(void)
-{
-	cxgb3_unregister_client(&t3c_client);
-	cxgb3i_pdu_cleanup();
-	cxgb3i_iscsi_cleanup();
-	cxgb3i_sdev_cleanup();
-}
-
-module_init(cxgb3i_init_module);
-module_exit(cxgb3i_exit_module);

drivers/scsi/cxgb3i/cxgb3i_offload.h

-/*
- * cxgb3i_offload.h: Chelsio S3xx iscsi offloaded tcp connection management
- *
- * Copyright (C) 2003-2008 Chelsio Communications.  All rights reserved.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the LICENSE file included in this
- * release for licensing terms and conditions.
- *
- * Written by:	Dimitris Michailidis (dm@chelsio.com)
- *		Karen Xie (kxie@chelsio.com)
- */
-
-#ifndef _CXGB3I_OFFLOAD_H
-#define _CXGB3I_OFFLOAD_H
-
-#include <linux/skbuff.h>
-#include <linux/in.h>
-
-#include "common.h"
-#include "adapter.h"
-#include "t3cdev.h"
-#include "cxgb3_offload.h"
-
-#define cxgb3i_log_error(fmt...) printk(KERN_ERR "cxgb3i: ERR! " fmt)
-#define cxgb3i_log_warn(fmt...)	 printk(KERN_WARNING "cxgb3i: WARN! " fmt)
-#define cxgb3i_log_info(fmt...)  printk(KERN_INFO "cxgb3i: " fmt)
-#define cxgb3i_log_debug(fmt, args...) \
-	printk(KERN_INFO "cxgb3i: %s - " fmt, __func__ , ## args)
-
-/**
- * struct s3_conn - an iscsi tcp connection structure
- *
- * @dev:	net device of with connection
- * @cdev:	adapter t3cdev for net device
- * @flags:	see c3cn_flags below
- * @tid:	connection id assigned by the h/w
- * @qset:	queue set used by connection
- * @mss_idx:	Maximum Segment Size table index
- * @l2t:	ARP resolution entry for offload packets
- * @wr_max:	maximum in-flight writes
- * @wr_avail:	number of writes available
- * @wr_unacked:	writes since last request for completion notification
- * @wr_pending_head: head of pending write queue
- * @wr_pending_tail: tail of pending write queue
- * @cpl_close:	skb for cpl_close_req
- * @cpl_abort_req: skb for cpl_abort_req
- * @cpl_abort_rpl: skb for cpl_abort_rpl
- * @lock:	connection status lock
- * @refcnt:	reference count on connection
- * @state:	connection state
- * @saddr:	source ip/port address
- * @daddr:	destination ip/port address
- * @dst_cache:	reference to destination route
- * @receive_queue: received PDUs
- * @write_queue: un-pushed pending writes
- * @retry_timer: retry timer for various operations
- * @err:	connection error status
- * @callback_lock: lock for opaque user context
- * @user_data:	opaque user context
- * @rcv_nxt:	next receive seq. #
- * @copied_seq:	head of yet unread data
- * @rcv_wup:	rcv_nxt on last window update sent
- * @snd_nxt:	next sequence we send
- * @snd_una:	first byte we want an ack for
- * @write_seq:	tail+1 of data held in send buffer
- */
-struct s3_conn {
-	struct net_device *dev;
-	struct t3cdev *cdev;
-	unsigned long flags;
-	int tid;
-	int qset;
-	int mss_idx;
-	struct l2t_entry *l2t;
-	int wr_max;
-	int wr_avail;
-	int wr_unacked;
-	struct sk_buff *wr_pending_head;
-	struct sk_buff *wr_pending_tail;
-	struct sk_buff *cpl_close;
-	struct sk_buff *cpl_abort_req;
-	struct sk_buff *cpl_abort_rpl;
-	spinlock_t lock;
-	atomic_t refcnt;
-	volatile unsigned int state;
-	struct sockaddr_in saddr;
-	struct sockaddr_in daddr;
-	struct dst_entry *dst_cache;
-	struct sk_buff_head receive_queue;
-	struct sk_buff_head write_queue;
-	struct timer_list retry_timer;
-	int err;
-	rwlock_t callback_lock;
-	void *user_data;
-
-	u32 rcv_nxt;
-	u32 copied_seq;
-	u32 rcv_wup;
-	u32 snd_nxt;
-	u32 snd_una;
-	u32 write_seq;
-};
-
-/*
- * connection state
- */
-enum conn_states {
-	C3CN_STATE_CONNECTING = 1,
-	C3CN_STATE_ESTABLISHED,
-	C3CN_STATE_ACTIVE_CLOSE,
-	C3CN_STATE_PASSIVE_CLOSE,
-	C3CN_STATE_CLOSE_WAIT_1,
-	C3CN_STATE_CLOSE_WAIT_2,
-	C3CN_STATE_ABORTING,
-	C3CN_STATE_CLOSED,
-};
-
-static inline unsigned int c3cn_is_closing(const struct s3_conn *c3cn)
-{
-	return c3cn->state >= C3CN_STATE_ACTIVE_CLOSE;
-}
-static inline unsigned int c3cn_is_established(const struct s3_conn *c3cn)
-{
-	return c3cn->state == C3CN_STATE_ESTABLISHED;
-}
-
-/*
- * Connection flags -- many to track some close related events.
- */
-enum c3cn_flags {
-	C3CN_ABORT_RPL_RCVD,	/* received one ABORT_RPL_RSS message */
-	C3CN_ABORT_REQ_RCVD,	/* received one ABORT_REQ_RSS message */
-	C3CN_ABORT_RPL_PENDING,	/* expecting an abort reply */
-	C3CN_TX_DATA_SENT,	/* already sent a TX_DATA WR */
-	C3CN_ACTIVE_CLOSE_NEEDED,	/* need to be closed */
-	C3CN_OFFLOAD_DOWN	/* offload function off */
-};
-
-/**
- * cxgb3i_sdev_data - Per adapter data.
- * Linked off of each Ethernet device port on the adapter.
- * Also available via the t3cdev structure since we have pointers to our port
- * net_device's there ...
- *
- * @list:	list head to link elements
- * @cdev:	t3cdev adapter
- * @client:	CPL client pointer
- * @ports:	array of adapter ports
- * @sport_next: next port
- * @sport_conn:	source port connection
- */
-struct cxgb3i_sdev_data {
-	struct list_head list;
-	struct t3cdev *cdev;
-	struct cxgb3_client *client;
-	struct adap_ports ports;
-	spinlock_t lock;
-	unsigned int sport_next;
-	struct s3_conn *sport_conn[0];
-};
-#define NDEV2CDATA(ndev) (*(struct cxgb3i_sdev_data **)&(ndev)->ec_ptr)
-#define CXGB3_SDEV_DATA(cdev) NDEV2CDATA((cdev)->lldev)
-
-void cxgb3i_sdev_cleanup(void);
-int cxgb3i_sdev_init(cxgb3_cpl_handler_func *);
-void cxgb3i_sdev_add(struct t3cdev *, struct cxgb3_client *);
-void cxgb3i_sdev_remove(struct t3cdev *);
-
-struct s3_conn *cxgb3i_c3cn_create(void);
-int cxgb3i_c3cn_connect(struct net_device *, struct s3_conn *,
-			struct sockaddr_in *);
-void cxgb3i_c3cn_rx_credits(struct s3_conn *, int);
-int cxgb3i_c3cn_send_pdus(struct s3_conn *, struct sk_buff *);
-void cxgb3i_c3cn_release(struct s3_conn *);
-
-/**
- * cxgb3_skb_cb - control block for received pdu state and ULP mode management.
- *
- * @flag:	see C3CB_FLAG_* below
- * @ulp_mode:	ULP mode/submode of sk_buff
- * @seq:	tcp sequence number
- */
-struct cxgb3_skb_rx_cb {
-	__u32 ddigest;			/* data digest */
-	__u32 pdulen;			/* recovered pdu length */
-};
-
-struct cxgb3_skb_tx_cb {
-	struct sk_buff *wr_next;	/* next wr */
-};
-
-struct cxgb3_skb_cb {
-	__u8 flags;
-	__u8 ulp_mode;
-	__u32 seq;
-	union {
-		struct cxgb3_skb_rx_cb rx;
-		struct cxgb3_skb_tx_cb tx;
-	};
-};
-
-#define CXGB3_SKB_CB(skb)	((struct cxgb3_skb_cb *)&((skb)->cb[0]))
-#define skb_flags(skb)		(CXGB3_SKB_CB(skb)->flags)
-#define skb_ulp_mode(skb)	(CXGB3_SKB_CB(skb)->ulp_mode)
-#define skb_tcp_seq(skb)	(CXGB3_SKB_CB(skb)->seq)
-#define skb_rx_ddigest(skb)	(CXGB3_SKB_CB(skb)->rx.ddigest)
-#define skb_rx_pdulen(skb)	(CXGB3_SKB_CB(skb)->rx.pdulen)
-#define skb_tx_wr_next(skb)	(CXGB3_SKB_CB(skb)->tx.wr_next)
-
-enum c3cb_flags {
-	C3CB_FLAG_NEED_HDR = 1 << 0,	/* packet needs a TX_DATA_WR header */
-	C3CB_FLAG_NO_APPEND = 1 << 1,	/* don't grow this skb */
-	C3CB_FLAG_COMPL = 1 << 2,	/* request WR completion */
-};
-
-/**
- * sge_opaque_hdr -
- * Opaque version of structure the SGE stores at skb->head of TX_DATA packets
- * and for which we must reserve space.
- */
-struct sge_opaque_hdr {
-	void *dev;
-	dma_addr_t addr[MAX_SKB_FRAGS + 1];
-};
-
-/* for TX: a skb must have a headroom of at least TX_HEADER_LEN bytes */
-#define TX_HEADER_LEN \
-		(sizeof(struct tx_data_wr) + sizeof(struct sge_opaque_hdr))
-#define SKB_TX_HEADROOM		SKB_MAX_HEAD(TX_HEADER_LEN)
-
-/*
- * get and set private ip for iscsi traffic
- */
-#define cxgb3i_get_private_ipv4addr(ndev) \
-	(((struct port_info *)(netdev_priv(ndev)))->iscsi_ipv4addr)
-#define cxgb3i_set_private_ipv4addr(ndev, addr) \
-	(((struct port_info *)(netdev_priv(ndev)))->iscsi_ipv4addr) = addr
-
-/* max. connections per adapter */
-#define CXGB3I_MAX_CONN		16384
-#endif /* _CXGB3_OFFLOAD_H */

drivers/scsi/cxgbi/Kconfig

+source "drivers/scsi/cxgbi/cxgb3i/Kconfig"
 source "drivers/scsi/cxgbi/cxgb4i/Kconfig"

drivers/scsi/cxgbi/Makefile

+obj-$(CONFIG_SCSI_CXGB3_ISCSI)	+= libcxgbi.o cxgb3i/
 obj-$(CONFIG_SCSI_CXGB4_ISCSI)	+= libcxgbi.o cxgb4i/

drivers/scsi/cxgb3i/Kbuild → drivers/scsi/cxgbi/cxgb3i/Kbuild

 EXTRA_CFLAGS += -I$(srctree)/drivers/net/cxgb3
 
-cxgb3i-y := cxgb3i_init.o cxgb3i_iscsi.o cxgb3i_pdu.o cxgb3i_offload.o cxgb3i_ddp.o
 obj-$(CONFIG_SCSI_CXGB3_ISCSI) += cxgb3i.o

drivers/scsi/cxgb3i/Kconfig → drivers/scsi/cxgbi/cxgb3i/Kconfig

 config SCSI_CXGB3_ISCSI
-	tristate "Chelsio S3xx iSCSI support"
+	tristate "Chelsio T3 iSCSI support"
 	depends on CHELSIO_T3_DEPENDS
 	select CHELSIO_T3
 	select SCSI_ISCSI_ATTRS
 	---help---
-	This driver supports iSCSI offload for the Chelsio S3 series devices.
+	  This driver supports iSCSI offload for the Chelsio T3 devices.

drivers/scsi/cxgb3i/cxgb3i_pdu.h → drivers/scsi/cxgbi/cxgb3i/cxgb3i.h

 /*
- * cxgb3i_ulp2.h: Chelsio S3xx iSCSI driver.
+ * cxgb3i.h: Chelsio S3xx iSCSI driver.
  *
  * Copyright (c) 2008 Chelsio Communications, Inc.
  *
@@ -10,8 +10,24 @@
  * Written by: Karen Xie (kxie@chelsio.com)
  */
 
-#ifndef __CXGB3I_ULP2_PDU_H__
-#define __CXGB3I_ULP2_PDU_H__
+#ifndef __CXGB3I_H__
+#define __CXGB3I_H__
+
+#define CXGB3I_SCSI_HOST_QDEPTH 1024
+#define CXGB3I_MAX_LUN		512
+#define ISCSI_PDU_NONPAYLOAD_MAX \
+	(sizeof(struct iscsi_hdr) + ISCSI_MAX_AHS_SIZE + 2*ISCSI_DIGEST_SIZE)
+
+/*for TX: a skb must have a headroom of at least TX_HEADER_LEN bytes */
+#define CXGB3I_TX_HEADER_LEN \
+	(sizeof(struct tx_data_wr) + sizeof(struct sge_opaque_hdr))
+
+extern cxgb3_cpl_handler_func cxgb3i_cpl_handlers[NUM_CPL_CMDS];
+
+#define cxgb3i_get_private_ipv4addr(ndev) \
+	(((struct port_info *)(netdev_priv(ndev)))->iscsi_ipv4addr)
+#define cxgb3i_set_private_ipv4addr(ndev, addr) \
+	(((struct port_info *)(netdev_priv(ndev)))->iscsi_ipv4addr) = addr
 
 struct cpl_iscsi_hdr_norss {
 	union opcode_tid ot;
@@ -32,28 +48,4 @@ struct cpl_rx_data_ddp_norss {
 	u32 ulp_crc;
 	u32 ddp_status;
 };
-
-#define RX_DDP_STATUS_IPP_SHIFT		27	/* invalid pagepod */
-#define RX_DDP_STATUS_TID_SHIFT		26	/* tid mismatch */
-#define RX_DDP_STATUS_COLOR_SHIFT	25	/* color mismatch */
-#define RX_DDP_STATUS_OFFSET_SHIFT	24	/* offset mismatch */
-#define RX_DDP_STATUS_ULIMIT_SHIFT	23	/* ulimit error */
-#define RX_DDP_STATUS_TAG_SHIFT		22	/* tag mismatch */
-#define RX_DDP_STATUS_DCRC_SHIFT	21	/* dcrc error */
-#define RX_DDP_STATUS_HCRC_SHIFT	20	/* hcrc error */
-#define RX_DDP_STATUS_PAD_SHIFT		19	/* pad error */
-#define RX_DDP_STATUS_PPP_SHIFT		18	/* pagepod parity error */
-#define RX_DDP_STATUS_LLIMIT_SHIFT	17	/* llimit error */
-#define RX_DDP_STATUS_DDP_SHIFT		16	/* ddp'able */
-#define RX_DDP_STATUS_PMM_SHIFT		15	/* pagepod mismatch */
-
-#define ULP2_FLAG_DATA_READY		0x1
-#define ULP2_FLAG_DATA_DDPED		0x2
-#define ULP2_FLAG_HCRC_ERROR		0x10
-#define ULP2_FLAG_DCRC_ERROR		0x20
-#define ULP2_FLAG_PAD_ERROR		0x40
-
-void cxgb3i_conn_closing(struct s3_conn *c3cn);
-void cxgb3i_conn_pdu_ready(struct s3_conn *c3cn);
-void cxgb3i_conn_tx_open(struct s3_conn *c3cn);
 #endif