/*
mv_sas.h - Marvell 88SE6440 SAS/SATA support
Copyright 2007 Red Hat, Inc.
Copyright 2008 Marvell. <kewei@marvell.com>
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; either version 2,
or (at your option) any later version.
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 GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; see the file COPYING. If not,
write to the Free Software Foundation, 675 Mass Ave, Cambridge,
MA 02139, USA.
*/
#ifndef _MV_SAS_H_
#define _MV_SAS_H_
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/ctype.h>
#include <linux/dma-mapping.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/vmalloc.h>
#include <scsi/libsas.h>
#include <scsi/scsi_tcq.h>
#include <scsi/sas_ata.h>
#include <linux/version.h>
#include "mv_defs.h"
#define DRV_NAME "mvsas"
#define DRV_VERSION "0.5.2"
#define _MV_DUMP 0
#define MVS_DISABLE_NVRAM
#define MVS_DISABLE_MSI
#define MVS_ID_NOT_MAPPED 0x7f
#define MVS_CHIP_SLOT_SZ (1U << mvi->chip->slot_width)
#define for_each_phy(__lseq_mask, __mc, __lseq, __rest) \
for ((__mc) = (__lseq_mask), (__lseq) = 0; \
(__mc) != 0 && __rest; \
(++__lseq), (__mc) >>= 1)
struct mvs_chip_info {
u32 n_phy;
u32 srs_sz;
u32 slot_width;
};
struct mvs_err_info {
__le32 flags;
__le32 flags2;
};
struct mvs_cmd_hdr {
__le32 flags; /* PRD tbl len; SAS, SATA ctl */
__le32 lens; /* cmd, max resp frame len */
__le32 tags; /* targ port xfer tag; tag */
__le32 data_len; /* data xfer len */
__le64 cmd_tbl; /* command table address */
__le64 open_frame; /* open addr frame address */
__le64 status_buf; /* status buffer address */
__le64 prd_tbl; /* PRD tbl address */
__le32 reserved[4];
};
struct mvs_port {
struct asd_sas_port sas_port;
u8 port_attached;
u8 taskfileset;
u8 wide_port_phymap;
struct list_head list;
};
struct mvs_phy {
struct mvs_port *port;
struct asd_sas_phy sas_phy;
struct sas_identify identify;
struct scsi_device *sdev;
u64 dev_sas_addr;
u64 att_dev_sas_addr;
u32 att_dev_info;
u32 dev_info;
u32 phy_type;
u32 phy_status;
u32 irq_status;
u32 frame_rcvd_size;
u8 frame_rcvd[32];
u8 phy_attached;
enum sas_linkrate minimum_linkrate;
enum sas_linkrate maximum_linkrate;
};
struct mvs_slot_info {
struct list_head list;
struct sas_task *task;
u32 n_elem;
u32 tx;
/* DMA buffer for storing cmd tbl, open addr frame, status buffer,
* and PRD table
*/
void *buf;
dma_addr_t buf_dma;
#if _MV_DUMP
u32 cmd_size;
#endif
void *response;
struct mvs_port *port;
};
struct mvs_info {
unsigned long flags;
/* host-wide lock */
spinlock_t lock;
/* our device */
struct pci_dev *pdev;
/* enhanced mode registers */
void __iomem *regs;
/* peripheral registers */
void __iomem *peri_regs;
u8 sas_addr[SAS_ADDR_SIZE];
/* SCSI/SAS glue */
struct sas_ha_struct sas;
struct Scsi_Host *shost;
/* TX (delivery) DMA ring */
__le32 *tx;
dma_addr_t tx_dma;
/* cached next-producer idx */
u32 tx_prod;
/* RX (completion) DMA ring */
__le32 *rx;
dma_addr_t rx_dma;
/* RX consumer idx */
u32 rx_cons;
/* RX'd FIS area */
__le32 *rx_fis;
dma_addr_t rx_fis_dma;
/* DMA command header slots */
struct mvs_cmd_hdr *slot;
dma_addr_t slot_dma;
const struct mvs_chip_info *chip;
u8 tags[MVS_SLOTS];
struct mvs_slot_info slot_info[MVS_SLOTS];
/* further per-slot information */
struct mvs_phy phy[MVS_MAX_PHYS];
struct mvs_port port[MVS_MAX_PHYS];
#ifdef MVS_USE_TASKLET
struct tasklet_struct tasklet;
#endif
};
int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
void *funcdata);
int mvs_slave_configure(struct scsi_device *sdev);
void mvs_scan_start(struct Scsi_Host *shost);
int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time);
int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags);
int mvs_task_abort(struct sas_task *task);
void mvs_port_formed(struct asd_sas_phy *sas_phy);
int mvs_I_T_nexus_reset(struct domain_device *dev);
void mvs_int_full(struct mvs_info *mvi);
void mvs_tag_init(struct mvs_info *mvi);
int mvs_nvram_read(struct mvs_info *mvi, u32 addr, void *buf, u32 buflen);
int __devinit mvs_hw_init(struct mvs_info *mvi);
void __devinit mvs_print_info(struct mvs_info *mvi);
void mvs_hba_interrupt_enable(struct mvs_info *mvi);
void mvs_hba_interrupt_disable(struct mvs_info *mvi);
void mvs_detect_porttype(struct mvs_info *mvi, int i);
u8 mvs_assign_reg_set(struct mvs_info *mvi, struct mvs_port *port);
void mvs_enable_xmt(struct mvs_info *mvi, int PhyId);
void __devinit mvs_phy_hacks(struct mvs_info *mvi);
void mvs_free_reg_set(struct mvs_info *mvi, struct mvs_port *port);
#endif
