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linux_dsm_epyc7002/drivers/scsi/esas2r/esas2r.h
Lee Jones e36e0427a4 scsi: esas2r: Add braces around the one-line if() 
In certain configurations esas2r_bugon() is sometimes NULLed by the compiler.

Fixes the following W=1 kernel build warning(s):

 In file included from drivers/scsi/esas2r/esas2r_log.c:44:
 drivers/scsi/esas2r/esas2r.h: In function ‘esas2r_rq_init_request’:
 drivers/scsi/esas2r/esas2r.h:1229:17: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
 1229 | esas2r_bugon();
 | ^
 NB: Lots of these - snipped for brevity

Link: https://lore.kernel.org/r/20200723122446.1329773-33-lee.jones@linaro.org
Cc: Bradley Grove <linuxdrivers@attotech.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-24 22:32:52 -04:00

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/*
* linux/drivers/scsi/esas2r/esas2r.h
* For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers
*
* Copyright (c) 2001-2013 ATTO Technology, Inc.
* (mailto:linuxdrivers@attotech.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
* of the License, 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.
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement, including but not limited to
* the risks and costs of program errors, damage to or loss of data,
* programs or equipment, and unavailability or interruption of operations.
*
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/proc_fs.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_tcq.h>
#include "esas2r_log.h"
#include "atioctl.h"
#include "atvda.h"
#ifndef ESAS2R_H
#define ESAS2R_H
/* Global Variables */
extern struct esas2r_adapter *esas2r_adapters[];
extern u8 *esas2r_buffered_ioctl;
extern dma_addr_t esas2r_buffered_ioctl_addr;
extern u32 esas2r_buffered_ioctl_size;
extern struct pci_dev *esas2r_buffered_ioctl_pcid;
#define SGL_PG_SZ_MIN 64
#define SGL_PG_SZ_MAX 1024
extern int sgl_page_size;
#define NUM_SGL_MIN 8
#define NUM_SGL_MAX 2048
extern int num_sg_lists;
#define NUM_REQ_MIN 4
#define NUM_REQ_MAX 256
extern int num_requests;
#define NUM_AE_MIN 2
#define NUM_AE_MAX 8
extern int num_ae_requests;
extern int cmd_per_lun;
extern int can_queue;
extern int esas2r_max_sectors;
extern int sg_tablesize;
extern int interrupt_mode;
extern int num_io_requests;
/* Macro defintions */
#define ESAS2R_MAX_ID 255
#define MAX_ADAPTERS 32
#define ESAS2R_DRVR_NAME "esas2r"
#define ESAS2R_LONGNAME "ATTO ExpressSAS 6GB RAID Adapter"
#define ESAS2R_MAX_DEVICES 32
#define ATTONODE_NAME "ATTONode"
#define ESAS2R_MAJOR_REV 1
#define ESAS2R_MINOR_REV 00
#define ESAS2R_VERSION_STR DEFINED_NUM_TO_STR(ESAS2R_MAJOR_REV) "." \
DEFINED_NUM_TO_STR(ESAS2R_MINOR_REV)
#define ESAS2R_COPYRIGHT_YEARS "2001-2013"
#define ESAS2R_DEFAULT_SGL_PAGE_SIZE 384
#define ESAS2R_DEFAULT_CMD_PER_LUN 64
#define ESAS2R_DEFAULT_NUM_SG_LISTS 1024
#define DEFINED_NUM_TO_STR(num) NUM_TO_STR(num)
#define NUM_TO_STR(num) #num
#define ESAS2R_SGL_ALIGN 16
#define ESAS2R_LIST_ALIGN 16
#define ESAS2R_LIST_EXTRA ESAS2R_NUM_EXTRA
#define ESAS2R_DATA_BUF_LEN 256
#define ESAS2R_DEFAULT_TMO 5000
#define ESAS2R_DISC_BUF_LEN 512
#define ESAS2R_FWCOREDUMP_SZ 0x80000
#define ESAS2R_NUM_PHYS 8
#define ESAS2R_TARG_ID_INV 0xFFFF
#define ESAS2R_INT_STS_MASK MU_INTSTAT_MASK
#define ESAS2R_INT_ENB_MASK MU_INTSTAT_MASK
#define ESAS2R_INT_DIS_MASK 0
#define ESAS2R_MAX_TARGETS 256
#define ESAS2R_KOBJ_NAME_LEN 20
/* u16 (WORD) component macros */
#define LOBYTE(w) ((u8)(u16)(w))
#define HIBYTE(w) ((u8)(((u16)(w)) >> 8))
#define MAKEWORD(lo, hi) ((u16)((u8)(lo) | ((u16)(u8)(hi) << 8)))
/* u32 (DWORD) component macros */
#define LOWORD(d) ((u16)(u32)(d))
#define HIWORD(d) ((u16)(((u32)(d)) >> 16))
#define MAKEDWORD(lo, hi) ((u32)((u16)(lo) | ((u32)(u16)(hi) << 16)))
/* macro to get the lowest nonzero bit of a value */
#define LOBIT(x) ((x) & (0 - (x)))
/* These functions are provided to access the chip's control registers.
* The register is specified by its byte offset from the register base
* for the adapter.
*/
#define esas2r_read_register_dword(a, reg) \
readl((void __iomem *)a->regs + (reg) + MW_REG_OFFSET_HWREG)
#define esas2r_write_register_dword(a, reg, data) \
writel(data, (void __iomem *)(a->regs + (reg) + MW_REG_OFFSET_HWREG))
#define esas2r_flush_register_dword(a, r) esas2r_read_register_dword(a, r)
/* This function is provided to access the chip's data window. The
* register is specified by its byte offset from the window base
* for the adapter.
*/
#define esas2r_read_data_byte(a, reg) \
readb((void __iomem *)a->data_window + (reg))
/* ATTO vendor and device Ids */
#define ATTO_VENDOR_ID 0x117C
#define ATTO_DID_INTEL_IOP348 0x002C
#define ATTO_DID_MV_88RC9580 0x0049
#define ATTO_DID_MV_88RC9580TS 0x0066
#define ATTO_DID_MV_88RC9580TSE 0x0067
#define ATTO_DID_MV_88RC9580TL 0x0068
/* ATTO subsystem device Ids */
#define ATTO_SSDID_TBT 0x4000
#define ATTO_TSSC_3808 0x4066
#define ATTO_TSSC_3808E 0x4067
#define ATTO_TLSH_1068 0x4068
#define ATTO_ESAS_R680 0x0049
#define ATTO_ESAS_R608 0x004A
#define ATTO_ESAS_R60F 0x004B
#define ATTO_ESAS_R6F0 0x004C
#define ATTO_ESAS_R644 0x004D
#define ATTO_ESAS_R648 0x004E
/*
* flash definitions & structures
* define the code types
*/
#define FBT_CPYR 0xAA00
#define FBT_SETUP 0xAA02
#define FBT_FLASH_VER 0xAA04
/* offsets to various locations in flash */
#define FLS_OFFSET_BOOT (u32)(0x00700000)
#define FLS_OFFSET_NVR (u32)(0x007C0000)
#define FLS_OFFSET_CPYR FLS_OFFSET_NVR
#define FLS_LENGTH_BOOT (FLS_OFFSET_CPYR - FLS_OFFSET_BOOT)
#define FLS_BLOCK_SIZE (u32)(0x00020000)
#define FI_NVR_2KB 0x0800
#define FI_NVR_8KB 0x2000
#define FM_BUF_SZ 0x800
/*
* marvell frey (88R9580) register definitions
* chip revision identifiers
*/
#define MVR_FREY_B2 0xB2
/*
* memory window definitions. window 0 is the data window with definitions
* of MW_DATA_XXX. window 1 is the register window with definitions of
* MW_REG_XXX.
*/
#define MW_REG_WINDOW_SIZE (u32)(0x00040000)
#define MW_REG_OFFSET_HWREG (u32)(0x00000000)
#define MW_REG_OFFSET_PCI (u32)(0x00008000)
#define MW_REG_PCI_HWREG_DELTA (MW_REG_OFFSET_PCI - MW_REG_OFFSET_HWREG)
#define MW_DATA_WINDOW_SIZE (u32)(0x00020000)
#define MW_DATA_ADDR_SER_FLASH (u32)(0xEC000000)
#define MW_DATA_ADDR_SRAM (u32)(0xF4000000)
#define MW_DATA_ADDR_PAR_FLASH (u32)(0xFC000000)
/*
* the following registers are for the communication
* list interface (AKA message unit (MU))
*/
#define MU_IN_LIST_ADDR_LO (u32)(0x00004000)
#define MU_IN_LIST_ADDR_HI (u32)(0x00004004)
#define MU_IN_LIST_WRITE (u32)(0x00004018)
#define MU_ILW_TOGGLE (u32)(0x00004000)
#define MU_IN_LIST_READ (u32)(0x0000401C)
#define MU_ILR_TOGGLE (u32)(0x00004000)
#define MU_ILIC_LIST (u32)(0x0000000F)
#define MU_ILIC_LIST_F0 (u32)(0x00000000)
#define MU_ILIC_DEST (u32)(0x00000F00)
#define MU_ILIC_DEST_DDR (u32)(0x00000200)
#define MU_IN_LIST_IFC_CONFIG (u32)(0x00004028)
#define MU_IN_LIST_CONFIG (u32)(0x0000402C)
#define MU_ILC_ENABLE (u32)(0x00000001)
#define MU_ILC_ENTRY_MASK (u32)(0x000000F0)
#define MU_ILC_ENTRY_4_DW (u32)(0x00000020)
#define MU_ILC_DYNAMIC_SRC (u32)(0x00008000)
#define MU_ILC_NUMBER_MASK (u32)(0x7FFF0000)
#define MU_ILC_NUMBER_SHIFT 16
#define MU_OUT_LIST_ADDR_LO (u32)(0x00004050)
#define MU_OUT_LIST_ADDR_HI (u32)(0x00004054)
#define MU_OUT_LIST_COPY_PTR_LO (u32)(0x00004058)
#define MU_OUT_LIST_COPY_PTR_HI (u32)(0x0000405C)
#define MU_OUT_LIST_WRITE (u32)(0x00004068)
#define MU_OLW_TOGGLE (u32)(0x00004000)
#define MU_OUT_LIST_COPY (u32)(0x0000406C)
#define MU_OLC_TOGGLE (u32)(0x00004000)
#define MU_OLC_WRT_PTR (u32)(0x00003FFF)
#define MU_OUT_LIST_IFC_CONFIG (u32)(0x00004078)
#define MU_OLIC_LIST (u32)(0x0000000F)
#define MU_OLIC_LIST_F0 (u32)(0x00000000)
#define MU_OLIC_SOURCE (u32)(0x00000F00)
#define MU_OLIC_SOURCE_DDR (u32)(0x00000200)
#define MU_OUT_LIST_CONFIG (u32)(0x0000407C)
#define MU_OLC_ENABLE (u32)(0x00000001)
#define MU_OLC_ENTRY_MASK (u32)(0x000000F0)
#define MU_OLC_ENTRY_4_DW (u32)(0x00000020)
#define MU_OLC_NUMBER_MASK (u32)(0x7FFF0000)
#define MU_OLC_NUMBER_SHIFT 16
#define MU_OUT_LIST_INT_STAT (u32)(0x00004088)
#define MU_OLIS_INT (u32)(0x00000001)
#define MU_OUT_LIST_INT_MASK (u32)(0x0000408C)
#define MU_OLIS_MASK (u32)(0x00000001)
/*
* the maximum size of the communication lists is two greater than the
* maximum amount of VDA requests. the extra are to prevent queue overflow.
*/
#define ESAS2R_MAX_NUM_REQS 256
#define ESAS2R_NUM_EXTRA 2
#define ESAS2R_MAX_COMM_LIST_SIZE (ESAS2R_MAX_NUM_REQS + ESAS2R_NUM_EXTRA)
/*
* the following registers are for the CPU interface
*/
#define MU_CTL_STATUS_IN (u32)(0x00010108)
#define MU_CTL_IN_FULL_RST (u32)(0x00000020)
#define MU_CTL_STATUS_IN_B2 (u32)(0x00010130)
#define MU_CTL_IN_FULL_RST2 (u32)(0x80000000)
#define MU_DOORBELL_IN (u32)(0x00010460)
#define DRBL_RESET_BUS (u32)(0x00000002)
#define DRBL_PAUSE_AE (u32)(0x00000004)
#define DRBL_RESUME_AE (u32)(0x00000008)
#define DRBL_MSG_IFC_DOWN (u32)(0x00000010)
#define DRBL_FLASH_REQ (u32)(0x00000020)
#define DRBL_FLASH_DONE (u32)(0x00000040)
#define DRBL_FORCE_INT (u32)(0x00000080)
#define DRBL_MSG_IFC_INIT (u32)(0x00000100)
#define DRBL_POWER_DOWN (u32)(0x00000200)
#define DRBL_DRV_VER_1 (u32)(0x00010000)
#define DRBL_DRV_VER DRBL_DRV_VER_1
#define MU_DOORBELL_IN_ENB (u32)(0x00010464)
#define MU_DOORBELL_OUT (u32)(0x00010480)
#define DRBL_PANIC_REASON_MASK (u32)(0x00F00000)
#define DRBL_UNUSED_HANDLER (u32)(0x00100000)
#define DRBL_UNDEF_INSTR (u32)(0x00200000)
#define DRBL_PREFETCH_ABORT (u32)(0x00300000)
#define DRBL_DATA_ABORT (u32)(0x00400000)
#define DRBL_JUMP_TO_ZERO (u32)(0x00500000)
#define DRBL_FW_RESET (u32)(0x00080000)
#define DRBL_FW_VER_MSK (u32)(0x00070000)
#define DRBL_FW_VER_0 (u32)(0x00000000)
#define DRBL_FW_VER_1 (u32)(0x00010000)
#define DRBL_FW_VER DRBL_FW_VER_1
#define MU_DOORBELL_OUT_ENB (u32)(0x00010484)
#define DRBL_ENB_MASK (u32)(0x00F803FF)
#define MU_INT_STATUS_OUT (u32)(0x00010200)
#define MU_INTSTAT_POST_OUT (u32)(0x00000010)
#define MU_INTSTAT_DRBL_IN (u32)(0x00000100)
#define MU_INTSTAT_DRBL (u32)(0x00001000)
#define MU_INTSTAT_MASK (u32)(0x00001010)
#define MU_INT_MASK_OUT (u32)(0x0001020C)
/* PCI express registers accessed via window 1 */
#define MVR_PCI_WIN1_REMAP (u32)(0x00008438)
#define MVRPW1R_ENABLE (u32)(0x00000001)
/* structures */
/* inbound list dynamic source entry */
struct esas2r_inbound_list_source_entry {
u64 address;
u32 length;
#define HWILSE_INTERFACE_F0 0x00000000
u32 reserved;
};
/* PCI data structure in expansion ROM images */
struct __packed esas2r_boot_header {
char signature[4];
u16 vendor_id;
u16 device_id;
u16 VPD;
u16 struct_length;
u8 struct_revision;
u8 class_code[3];
u16 image_length;
u16 code_revision;
u8 code_type;
#define CODE_TYPE_PC 0
#define CODE_TYPE_OPEN 1
#define CODE_TYPE_EFI 3
u8 indicator;
#define INDICATOR_LAST 0x80
u8 reserved[2];
};
struct __packed esas2r_boot_image {
u16 signature;
u8 reserved[22];
u16 header_offset;
u16 pnp_offset;
};
struct __packed esas2r_pc_image {
u16 signature;
u8 length;
u8 entry_point[3];
u8 checksum;
u16 image_end;
u16 min_size;
u8 rom_flags;
u8 reserved[12];
u16 header_offset;
u16 pnp_offset;
struct esas2r_boot_header boot_image;
};
struct __packed esas2r_efi_image {
u16 signature;
u16 length;
u32 efi_signature;
#define EFI_ROM_SIG 0x00000EF1
u16 image_type;
#define EFI_IMAGE_APP 10
#define EFI_IMAGE_BSD 11
#define EFI_IMAGE_RTD 12
u16 machine_type;
#define EFI_MACHINE_IA32 0x014c
#define EFI_MACHINE_IA64 0x0200
#define EFI_MACHINE_X64 0x8664
#define EFI_MACHINE_EBC 0x0EBC
u16 compression;
#define EFI_UNCOMPRESSED 0x0000
#define EFI_COMPRESSED 0x0001
u8 reserved[8];
u16 efi_offset;
u16 header_offset;
u16 reserved2;
struct esas2r_boot_header boot_image;
};
struct esas2r_adapter;
struct esas2r_sg_context;
struct esas2r_request;
typedef void (*RQCALLBK) (struct esas2r_adapter *a,
struct esas2r_request *rq);
typedef bool (*RQBUILDSGL) (struct esas2r_adapter *a,
struct esas2r_sg_context *sgc);
struct esas2r_component_header {
u8 img_type;
#define CH_IT_FW 0x00
#define CH_IT_NVR 0x01
#define CH_IT_BIOS 0x02
#define CH_IT_MAC 0x03
#define CH_IT_CFG 0x04
#define CH_IT_EFI 0x05
u8 status;
#define CH_STAT_PENDING 0xff
#define CH_STAT_FAILED 0x00
#define CH_STAT_SUCCESS 0x01
#define CH_STAT_RETRY 0x02
#define CH_STAT_INVALID 0x03
u8 pad[2];
u32 version;
u32 length;
u32 image_offset;
};
#define FI_REL_VER_SZ 16
struct esas2r_flash_img_v0 {
u8 fi_version;
#define FI_VERSION_0 00
u8 status;
u8 adap_typ;
u8 action;
u32 length;
u16 checksum;
u16 driver_error;
u16 flags;
u16 num_comps;
#define FI_NUM_COMPS_V0 5
u8 rel_version[FI_REL_VER_SZ];
struct esas2r_component_header cmp_hdr[FI_NUM_COMPS_V0];
u8 scratch_buf[FM_BUF_SZ];
};
struct esas2r_flash_img {
u8 fi_version;
#define FI_VERSION_1 01
u8 status;
#define FI_STAT_SUCCESS 0x00
#define FI_STAT_FAILED 0x01
#define FI_STAT_REBOOT 0x02
#define FI_STAT_ADAPTYP 0x03
#define FI_STAT_INVALID 0x04
#define FI_STAT_CHKSUM 0x05
#define FI_STAT_LENGTH 0x06
#define FI_STAT_UNKNOWN 0x07
#define FI_STAT_IMG_VER 0x08
#define FI_STAT_BUSY 0x09
#define FI_STAT_DUAL 0x0A
#define FI_STAT_MISSING 0x0B
#define FI_STAT_UNSUPP 0x0C
#define FI_STAT_ERASE 0x0D
#define FI_STAT_FLASH 0x0E
#define FI_STAT_DEGRADED 0x0F
u8 adap_typ;
#define FI_AT_UNKNWN 0xFF
#define FI_AT_SUN_LAKE 0x0B
#define FI_AT_MV_9580 0x0F
u8 action;
#define FI_ACT_DOWN 0x00
#define FI_ACT_UP 0x01
#define FI_ACT_UPSZ 0x02
#define FI_ACT_MAX 0x02
#define FI_ACT_DOWN1 0x80
u32 length;
u16 checksum;
u16 driver_error;
u16 flags;
#define FI_FLG_NVR_DEF 0x0001
u16 num_comps;
#define FI_NUM_COMPS_V1 6
u8 rel_version[FI_REL_VER_SZ];
struct esas2r_component_header cmp_hdr[FI_NUM_COMPS_V1];
u8 scratch_buf[FM_BUF_SZ];
};
/* definitions for flash script (FS) commands */
struct esas2r_ioctlfs_command {
u8 command;
#define ESAS2R_FS_CMD_ERASE 0
#define ESAS2R_FS_CMD_READ 1
#define ESAS2R_FS_CMD_BEGINW 2
#define ESAS2R_FS_CMD_WRITE 3
#define ESAS2R_FS_CMD_COMMIT 4
#define ESAS2R_FS_CMD_CANCEL 5
u8 checksum;
u8 reserved[2];
u32 flash_addr;
u32 length;
u32 image_offset;
};
struct esas2r_ioctl_fs {
u8 version;
#define ESAS2R_FS_VER 0
u8 status;
u8 driver_error;
u8 adap_type;
#define ESAS2R_FS_AT_ESASRAID2 3
#define ESAS2R_FS_AT_TSSASRAID2 4
#define ESAS2R_FS_AT_TSSASRAID2E 5
#define ESAS2R_FS_AT_TLSASHBA 6
u8 driver_ver;
u8 reserved[11];
struct esas2r_ioctlfs_command command;
u8 data[1];
};
struct esas2r_sas_nvram {
u8 signature[4];
u8 version;
#define SASNVR_VERSION_0 0x00
#define SASNVR_VERSION SASNVR_VERSION_0
u8 checksum;
#define SASNVR_CKSUM_SEED 0x5A
u8 max_lun_for_target;
u8 pci_latency;
#define SASNVR_PCILAT_DIS 0x00
#define SASNVR_PCILAT_MIN 0x10
#define SASNVR_PCILAT_MAX 0xF8
u8 options1;
#define SASNVR1_BOOT_DRVR 0x01
#define SASNVR1_BOOT_SCAN 0x02
#define SASNVR1_DIS_PCI_MWI 0x04
#define SASNVR1_FORCE_ORD_Q 0x08
#define SASNVR1_CACHELINE_0 0x10
#define SASNVR1_DIS_DEVSORT 0x20
#define SASNVR1_PWR_MGT_EN 0x40
#define SASNVR1_WIDEPORT 0x80
u8 options2;
#define SASNVR2_SINGLE_BUS 0x01
#define SASNVR2_SLOT_BIND 0x02
#define SASNVR2_EXP_PROG 0x04
#define SASNVR2_CMDTHR_LUN 0x08
#define SASNVR2_HEARTBEAT 0x10
#define SASNVR2_INT_CONNECT 0x20
#define SASNVR2_SW_MUX_CTRL 0x40
#define SASNVR2_DISABLE_NCQ 0x80
u8 int_coalescing;
#define SASNVR_COAL_DIS 0x00
#define SASNVR_COAL_LOW 0x01
#define SASNVR_COAL_MED 0x02
#define SASNVR_COAL_HI 0x03
u8 cmd_throttle;
#define SASNVR_CMDTHR_NONE 0x00
u8 dev_wait_time;
u8 dev_wait_count;
u8 spin_up_delay;
#define SASNVR_SPINUP_MAX 0x14
u8 ssp_align_rate;
u8 sas_addr[8];
u8 phy_speed[16];
#define SASNVR_SPEED_AUTO 0x00
#define SASNVR_SPEED_1_5GB 0x01
#define SASNVR_SPEED_3GB 0x02
#define SASNVR_SPEED_6GB 0x03
#define SASNVR_SPEED_12GB 0x04
u8 phy_mux[16];
#define SASNVR_MUX_DISABLED 0x00
#define SASNVR_MUX_1_5GB 0x01
#define SASNVR_MUX_3GB 0x02
#define SASNVR_MUX_6GB 0x03
u8 phy_flags[16];
#define SASNVR_PHF_DISABLED 0x01
#define SASNVR_PHF_RD_ONLY 0x02
u8 sort_type;
#define SASNVR_SORT_SAS_ADDR 0x00
#define SASNVR_SORT_H308_CONN 0x01
#define SASNVR_SORT_PHY_ID 0x02
#define SASNVR_SORT_SLOT_ID 0x03
u8 dpm_reqcmd_lmt;
u8 dpm_stndby_time;
u8 dpm_active_time;
u8 phy_target_id[16];
#define SASNVR_PTI_DISABLED 0xFF
u8 virt_ses_mode;
#define SASNVR_VSMH_DISABLED 0x00
u8 read_write_mode;
#define SASNVR_RWM_DEFAULT 0x00
u8 link_down_to;
u8 reserved[0xA1];
};
typedef u32 (*PGETPHYSADDR) (struct esas2r_sg_context *sgc, u64 *addr);
struct esas2r_sg_context {
struct esas2r_adapter *adapter;
struct esas2r_request *first_req;
u32 length;
u8 *cur_offset;
PGETPHYSADDR get_phys_addr;
union {
struct {
struct atto_vda_sge *curr;
struct atto_vda_sge *last;
struct atto_vda_sge *limit;
struct atto_vda_sge *chain;
} a64;
struct {
struct atto_physical_region_description *curr;
struct atto_physical_region_description *chain;
u32 sgl_max_cnt;
u32 sge_cnt;
} prd;
} sge;
struct scatterlist *cur_sgel;
u8 *exp_offset;
int num_sgel;
int sgel_count;
};
struct esas2r_target {
u8 flags;
#define TF_PASS_THRU 0x01
#define TF_USED 0x02
u8 new_target_state;
u8 target_state;
u8 buffered_target_state;
#define TS_NOT_PRESENT 0x00
#define TS_PRESENT 0x05
#define TS_LUN_CHANGE 0x06
#define TS_INVALID 0xFF
u32 block_size;
u32 inter_block;
u32 inter_byte;
u16 virt_targ_id;
u16 phys_targ_id;
u8 identifier_len;
u64 sas_addr;
u8 identifier[60];
struct atto_vda_ae_lu lu_event;
};
struct esas2r_request {
struct list_head comp_list;
struct list_head req_list;
union atto_vda_req *vrq;
struct esas2r_mem_desc *vrq_md;
union {
void *data_buf;
union atto_vda_rsp_data *vda_rsp_data;
};
u8 *sense_buf;
struct list_head sg_table_head;
struct esas2r_mem_desc *sg_table;
u32 timeout;
#define RQ_TIMEOUT_S1 0xFFFFFFFF
#define RQ_TIMEOUT_S2 0xFFFFFFFE
#define RQ_MAX_TIMEOUT 0xFFFFFFFD
u16 target_id;
u8 req_type;
#define RT_INI_REQ 0x01
#define RT_DISC_REQ 0x02
u8 sense_len;
union atto_vda_func_rsp func_rsp;
RQCALLBK comp_cb;
RQCALLBK interrupt_cb;
void *interrupt_cx;
u8 flags;
#define RF_1ST_IBLK_BASE 0x04
#define RF_FAILURE_OK 0x08
u8 req_stat;
u16 vda_req_sz;
#define RQ_SIZE_DEFAULT 0
u64 lba;
RQCALLBK aux_req_cb;
void *aux_req_cx;
u32 blk_len;
u32 max_blk_len;
union {
struct scsi_cmnd *cmd;
u8 *task_management_status_ptr;
};
};
struct esas2r_flash_context {
struct esas2r_flash_img *fi;
RQCALLBK interrupt_cb;
u8 *sgc_offset;
u8 *scratch;
u32 fi_hdr_len;
u8 task;
#define FMTSK_ERASE_BOOT 0
#define FMTSK_WRTBIOS 1
#define FMTSK_READBIOS 2
#define FMTSK_WRTMAC 3
#define FMTSK_READMAC 4
#define FMTSK_WRTEFI 5
#define FMTSK_READEFI 6
#define FMTSK_WRTCFG 7
#define FMTSK_READCFG 8
u8 func;
u16 num_comps;
u32 cmp_len;
u32 flsh_addr;
u32 curr_len;
u8 comp_typ;
struct esas2r_sg_context sgc;
};
struct esas2r_disc_context {
u8 disc_evt;
#define DCDE_DEV_CHANGE 0x01
#define DCDE_DEV_SCAN 0x02
u8 state;
#define DCS_DEV_RMV 0x00
#define DCS_DEV_ADD 0x01
#define DCS_BLOCK_DEV_SCAN 0x02
#define DCS_RAID_GRP_INFO 0x03
#define DCS_PART_INFO 0x04
#define DCS_PT_DEV_INFO 0x05
#define DCS_PT_DEV_ADDR 0x06
#define DCS_DISC_DONE 0xFF
u16 flags;
#define DCF_DEV_CHANGE 0x0001
#define DCF_DEV_SCAN 0x0002
#define DCF_POLLED 0x8000
u32 interleave;
u32 block_size;
u16 dev_ix;
u8 part_num;
u8 raid_grp_ix;
char raid_grp_name[16];
struct esas2r_target *curr_targ;
u16 curr_virt_id;
u16 curr_phys_id;
u8 scan_gen;
u8 dev_addr_type;
u64 sas_addr;
};
struct esas2r_mem_desc {
struct list_head next_desc;
void *virt_addr;
u64 phys_addr;
void *pad;
void *esas2r_data;
u32 esas2r_param;
u32 size;
};
enum fw_event_type {
fw_event_null,
fw_event_lun_change,
fw_event_present,
fw_event_not_present,
fw_event_vda_ae
};
struct esas2r_vda_ae {
u32 signature;
#define ESAS2R_VDA_EVENT_SIG 0x4154544F
u8 bus_number;
u8 devfn;
u8 pad[2];
union atto_vda_ae vda_ae;
};
struct esas2r_fw_event_work {
struct list_head list;
struct delayed_work work;
struct esas2r_adapter *a;
enum fw_event_type type;
u8 data[sizeof(struct esas2r_vda_ae)];
};
enum state {
FW_INVALID_ST,
FW_STATUS_ST,
FW_COMMAND_ST
};
struct esas2r_firmware {
enum state state;
struct esas2r_flash_img header;
u8 *data;
u64 phys;
int orig_len;
void *header_buff;
u64 header_buff_phys;
};
struct esas2r_adapter {
struct esas2r_target targetdb[ESAS2R_MAX_TARGETS];
struct esas2r_target *targetdb_end;
unsigned char *regs;
unsigned char *data_window;
long flags;
#define AF_PORT_CHANGE 0
#define AF_CHPRST_NEEDED 1
#define AF_CHPRST_PENDING 2
#define AF_CHPRST_DETECTED 3
#define AF_BUSRST_NEEDED 4
#define AF_BUSRST_PENDING 5
#define AF_BUSRST_DETECTED 6
#define AF_DISABLED 7
#define AF_FLASH_LOCK 8
#define AF_OS_RESET 9
#define AF_FLASHING 10
#define AF_POWER_MGT 11
#define AF_NVR_VALID 12
#define AF_DEGRADED_MODE 13
#define AF_DISC_PENDING 14
#define AF_TASKLET_SCHEDULED 15
#define AF_HEARTBEAT 16
#define AF_HEARTBEAT_ENB 17
#define AF_NOT_PRESENT 18
#define AF_CHPRST_STARTED 19
#define AF_FIRST_INIT 20
#define AF_POWER_DOWN 21
#define AF_DISC_IN_PROG 22
#define AF_COMM_LIST_TOGGLE 23
#define AF_LEGACY_SGE_MODE 24
#define AF_DISC_POLLED 25
long flags2;
#define AF2_SERIAL_FLASH 0
#define AF2_DEV_SCAN 1
#define AF2_DEV_CNT_OK 2
#define AF2_COREDUMP_AVAIL 3
#define AF2_COREDUMP_SAVED 4
#define AF2_VDA_POWER_DOWN 5
#define AF2_THUNDERLINK 6
#define AF2_THUNDERBOLT 7
#define AF2_INIT_DONE 8
#define AF2_INT_PENDING 9
#define AF2_TIMER_TICK 10
#define AF2_IRQ_CLAIMED 11
#define AF2_MSI_ENABLED 12
atomic_t disable_cnt;
atomic_t dis_ints_cnt;
u32 int_stat;
u32 int_mask;
u32 volatile *outbound_copy;
struct list_head avail_request;
spinlock_t request_lock;
spinlock_t sg_list_lock;
spinlock_t queue_lock;
spinlock_t mem_lock;
struct list_head free_sg_list_head;
struct esas2r_mem_desc *sg_list_mds;
struct list_head active_list;
struct list_head defer_list;
struct esas2r_request **req_table;
union {
u16 prev_dev_cnt;
u32 heartbeat_time;
#define ESAS2R_HEARTBEAT_TIME (3000)
};
u32 chip_uptime;
#define ESAS2R_CHP_UPTIME_MAX (60000)
#define ESAS2R_CHP_UPTIME_CNT (20000)
u64 uncached_phys;
u8 *uncached;
struct esas2r_sas_nvram *nvram;
struct esas2r_request general_req;
u8 init_msg;
#define ESAS2R_INIT_MSG_START 1
#define ESAS2R_INIT_MSG_INIT 2
#define ESAS2R_INIT_MSG_GET_INIT 3
#define ESAS2R_INIT_MSG_REINIT 4
u16 cmd_ref_no;
u32 fw_version;
u32 fw_build;
u32 chip_init_time;
#define ESAS2R_CHPRST_TIME (180000)
#define ESAS2R_CHPRST_WAIT_TIME (2000)
u32 last_tick_time;
u32 window_base;
RQBUILDSGL build_sgl;
struct esas2r_request *first_ae_req;
u32 list_size;
u32 last_write;
u32 last_read;
u16 max_vdareq_size;
u16 disc_wait_cnt;
struct esas2r_mem_desc inbound_list_md;
struct esas2r_mem_desc outbound_list_md;
struct esas2r_disc_context disc_ctx;
u8 *disc_buffer;
u32 disc_start_time;
u32 disc_wait_time;
u32 flash_ver;
char flash_rev[16];
char fw_rev[16];
char image_type[16];
struct esas2r_flash_context flash_context;
u32 num_targets_backend;
u32 ioctl_tunnel;
struct tasklet_struct tasklet;
struct pci_dev *pcid;
struct Scsi_Host *host;
unsigned int index;
char name[32];
struct timer_list timer;
struct esas2r_firmware firmware;
wait_queue_head_t nvram_waiter;
int nvram_command_done;
wait_queue_head_t fm_api_waiter;
int fm_api_command_done;
wait_queue_head_t vda_waiter;
int vda_command_done;
u8 *vda_buffer;
u64 ppvda_buffer;
#define VDA_BUFFER_HEADER_SZ (offsetof(struct atto_ioctl_vda, data))
#define VDA_MAX_BUFFER_SIZE (0x40000 + VDA_BUFFER_HEADER_SZ)
wait_queue_head_t fs_api_waiter;
int fs_api_command_done;
u64 ppfs_api_buffer;
u8 *fs_api_buffer;
u32 fs_api_buffer_size;
wait_queue_head_t buffered_ioctl_waiter;
int buffered_ioctl_done;
int uncached_size;
struct workqueue_struct *fw_event_q;
struct list_head fw_event_list;
spinlock_t fw_event_lock;
u8 fw_events_off; /* if '1', then ignore events */
char fw_event_q_name[ESAS2R_KOBJ_NAME_LEN];
/*
* intr_mode stores the interrupt mode currently being used by this
* adapter. it is based on the interrupt_mode module parameter, but
* can be changed based on the ability (or not) to utilize the
* mode requested by the parameter.
*/
int intr_mode;
#define INTR_MODE_LEGACY 0
#define INTR_MODE_MSI 1
#define INTR_MODE_MSIX 2
struct esas2r_sg_context fm_api_sgc;
u8 *save_offset;
struct list_head vrq_mds_head;
struct esas2r_mem_desc *vrq_mds;
int num_vrqs;
struct mutex fm_api_mutex;
struct mutex fs_api_mutex;
struct semaphore nvram_semaphore;
struct atto_ioctl *local_atto_ioctl;
u8 fw_coredump_buff[ESAS2R_FWCOREDUMP_SZ];
unsigned int sysfs_fw_created:1;
unsigned int sysfs_fs_created:1;
unsigned int sysfs_vda_created:1;
unsigned int sysfs_hw_created:1;
unsigned int sysfs_live_nvram_created:1;
unsigned int sysfs_default_nvram_created:1;
};
/*
* Function Declarations
* SCSI functions
*/
const char *esas2r_info(struct Scsi_Host *);
int esas2r_write_params(struct esas2r_adapter *a, struct esas2r_request *rq,
struct esas2r_sas_nvram *data);
int esas2r_ioctl_handler(void *hostdata, unsigned int cmd, void __user *arg);
int esas2r_ioctl(struct scsi_device *dev, unsigned int cmd, void __user *arg);
u8 handle_hba_ioctl(struct esas2r_adapter *a,
struct atto_ioctl *ioctl_hba);
int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd);
int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh);
long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg);
/* SCSI error handler (eh) functions */
int esas2r_eh_abort(struct scsi_cmnd *cmd);
int esas2r_device_reset(struct scsi_cmnd *cmd);
int esas2r_host_reset(struct scsi_cmnd *cmd);
int esas2r_bus_reset(struct scsi_cmnd *cmd);
int esas2r_target_reset(struct scsi_cmnd *cmd);
/* Internal functions */
int esas2r_init_adapter(struct Scsi_Host *host, struct pci_dev *pcid,
int index);
int esas2r_read_fw(struct esas2r_adapter *a, char *buf, long off, int count);
int esas2r_write_fw(struct esas2r_adapter *a, const char *buf, long off,
int count);
int esas2r_read_vda(struct esas2r_adapter *a, char *buf, long off, int count);
int esas2r_write_vda(struct esas2r_adapter *a, const char *buf, long off,
int count);
int esas2r_read_fs(struct esas2r_adapter *a, char *buf, long off, int count);
int esas2r_write_fs(struct esas2r_adapter *a, const char *buf, long off,
int count);
void esas2r_adapter_tasklet(unsigned long context);
irqreturn_t esas2r_interrupt(int irq, void *dev_id);
irqreturn_t esas2r_msi_interrupt(int irq, void *dev_id);
void esas2r_kickoff_timer(struct esas2r_adapter *a);
int esas2r_suspend(struct pci_dev *pcid, pm_message_t state);
int esas2r_resume(struct pci_dev *pcid);
void esas2r_fw_event_off(struct esas2r_adapter *a);
void esas2r_fw_event_on(struct esas2r_adapter *a);
bool esas2r_nvram_write(struct esas2r_adapter *a, struct esas2r_request *rq,
struct esas2r_sas_nvram *nvram);
void esas2r_nvram_get_defaults(struct esas2r_adapter *a,
struct esas2r_sas_nvram *nvram);
void esas2r_complete_request_cb(struct esas2r_adapter *a,
struct esas2r_request *rq);
void esas2r_reset_detected(struct esas2r_adapter *a);
void esas2r_target_state_changed(struct esas2r_adapter *ha, u16 targ_id,
u8 state);
int esas2r_req_status_to_error(u8 req_stat);
void esas2r_kill_adapter(int i);
void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq);
struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a);
u32 esas2r_get_uncached_size(struct esas2r_adapter *a);
bool esas2r_init_adapter_struct(struct esas2r_adapter *a,
void **uncached_area);
bool esas2r_check_adapter(struct esas2r_adapter *a);
bool esas2r_init_adapter_hw(struct esas2r_adapter *a, bool init_poll);
void esas2r_start_request(struct esas2r_adapter *a, struct esas2r_request *rq);
bool esas2r_send_task_mgmt(struct esas2r_adapter *a,
struct esas2r_request *rqaux, u8 task_mgt_func);
void esas2r_do_tasklet_tasks(struct esas2r_adapter *a);
void esas2r_adapter_interrupt(struct esas2r_adapter *a);
void esas2r_do_deferred_processes(struct esas2r_adapter *a);
void esas2r_reset_bus(struct esas2r_adapter *a);
void esas2r_reset_adapter(struct esas2r_adapter *a);
void esas2r_timer_tick(struct esas2r_adapter *a);
const char *esas2r_get_model_name(struct esas2r_adapter *a);
const char *esas2r_get_model_name_short(struct esas2r_adapter *a);
u32 esas2r_stall_execution(struct esas2r_adapter *a, u32 start_time,
u32 *delay);
void esas2r_build_flash_req(struct esas2r_adapter *a,
struct esas2r_request *rq,
u8 sub_func,
u8 cksum,
u32 addr,
u32 length);
void esas2r_build_mgt_req(struct esas2r_adapter *a,
struct esas2r_request *rq,
u8 sub_func,
u8 scan_gen,
u16 dev_index,
u32 length,
void *data);
void esas2r_build_ae_req(struct esas2r_adapter *a, struct esas2r_request *rq);
void esas2r_build_cli_req(struct esas2r_adapter *a,
struct esas2r_request *rq,
u32 length,
u32 cmd_rsp_len);
void esas2r_build_ioctl_req(struct esas2r_adapter *a,
struct esas2r_request *rq,
u32 length,
u8 sub_func);
void esas2r_build_cfg_req(struct esas2r_adapter *a,
struct esas2r_request *rq,
u8 sub_func,
u32 length,
void *data);
void esas2r_power_down(struct esas2r_adapter *a);
bool esas2r_power_up(struct esas2r_adapter *a, bool init_poll);
void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq);
u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo);
bool esas2r_process_fs_ioctl(struct esas2r_adapter *a,
struct esas2r_ioctl_fs *fs,
struct esas2r_request *rq,
struct esas2r_sg_context *sgc);
bool esas2r_read_flash_block(struct esas2r_adapter *a, void *to, u32 from,
u32 size);
bool esas2r_read_mem_block(struct esas2r_adapter *a, void *to, u32 from,
u32 size);
bool esas2r_fm_api(struct esas2r_adapter *a, struct esas2r_flash_img *fi,
struct esas2r_request *rq, struct esas2r_sg_context *sgc);
void esas2r_force_interrupt(struct esas2r_adapter *a);
void esas2r_local_start_request(struct esas2r_adapter *a,
struct esas2r_request *rq);
void esas2r_process_adapter_reset(struct esas2r_adapter *a);
void esas2r_complete_request(struct esas2r_adapter *a,
struct esas2r_request *rq);
void esas2r_dummy_complete(struct esas2r_adapter *a,
struct esas2r_request *rq);
void esas2r_ae_complete(struct esas2r_adapter *a, struct esas2r_request *rq);
void esas2r_start_vda_request(struct esas2r_adapter *a,
struct esas2r_request *rq);
bool esas2r_read_flash_rev(struct esas2r_adapter *a);
bool esas2r_read_image_type(struct esas2r_adapter *a);
bool esas2r_nvram_read_direct(struct esas2r_adapter *a);
bool esas2r_nvram_validate(struct esas2r_adapter *a);
void esas2r_nvram_set_defaults(struct esas2r_adapter *a);
bool esas2r_print_flash_rev(struct esas2r_adapter *a);
void esas2r_send_reset_ae(struct esas2r_adapter *a, bool pwr_mgt);
bool esas2r_init_msgs(struct esas2r_adapter *a);
bool esas2r_is_adapter_present(struct esas2r_adapter *a);
void esas2r_nuxi_mgt_data(u8 function, void *data);
void esas2r_nuxi_cfg_data(u8 function, void *data);
void esas2r_nuxi_ae_data(union atto_vda_ae *ae);
void esas2r_reset_chip(struct esas2r_adapter *a);
void esas2r_log_request_failure(struct esas2r_adapter *a,
struct esas2r_request *rq);
void esas2r_polled_interrupt(struct esas2r_adapter *a);
bool esas2r_ioreq_aborted(struct esas2r_adapter *a, struct esas2r_request *rq,
u8 status);
bool esas2r_build_sg_list_sge(struct esas2r_adapter *a,
struct esas2r_sg_context *sgc);
bool esas2r_build_sg_list_prd(struct esas2r_adapter *a,
struct esas2r_sg_context *sgc);
void esas2r_targ_db_initialize(struct esas2r_adapter *a);
void esas2r_targ_db_remove_all(struct esas2r_adapter *a, bool notify);
void esas2r_targ_db_report_changes(struct esas2r_adapter *a);
struct esas2r_target *esas2r_targ_db_add_raid(struct esas2r_adapter *a,
struct esas2r_disc_context *dc);
struct esas2r_target *esas2r_targ_db_add_pthru(struct esas2r_adapter *a,
struct esas2r_disc_context *dc,
u8 *ident,
u8 ident_len);
void esas2r_targ_db_remove(struct esas2r_adapter *a, struct esas2r_target *t);
struct esas2r_target *esas2r_targ_db_find_by_sas_addr(struct esas2r_adapter *a,
u64 *sas_addr);
struct esas2r_target *esas2r_targ_db_find_by_ident(struct esas2r_adapter *a,
void *identifier,
u8 ident_len);
u16 esas2r_targ_db_find_next_present(struct esas2r_adapter *a, u16 target_id);
struct esas2r_target *esas2r_targ_db_find_by_virt_id(struct esas2r_adapter *a,
u16 virt_id);
u16 esas2r_targ_db_get_tgt_cnt(struct esas2r_adapter *a);
void esas2r_disc_initialize(struct esas2r_adapter *a);
void esas2r_disc_start_waiting(struct esas2r_adapter *a);
void esas2r_disc_check_for_work(struct esas2r_adapter *a);
void esas2r_disc_check_complete(struct esas2r_adapter *a);
void esas2r_disc_queue_event(struct esas2r_adapter *a, u8 disc_evt);
bool esas2r_disc_start_port(struct esas2r_adapter *a);
void esas2r_disc_local_start_request(struct esas2r_adapter *a,
struct esas2r_request *rq);
bool esas2r_set_degraded_mode(struct esas2r_adapter *a, char *error_str);
bool esas2r_process_vda_ioctl(struct esas2r_adapter *a,
struct atto_ioctl_vda *vi,
struct esas2r_request *rq,
struct esas2r_sg_context *sgc);
void esas2r_queue_fw_event(struct esas2r_adapter *a,
enum fw_event_type type,
void *data,
int data_sz);
/* Inline functions */
/* Allocate a chip scatter/gather list entry */
static inline struct esas2r_mem_desc *esas2r_alloc_sgl(struct esas2r_adapter *a)
{
unsigned long flags;
struct list_head *sgl;
struct esas2r_mem_desc *result = NULL;
spin_lock_irqsave(&a->sg_list_lock, flags);
if (likely(!list_empty(&a->free_sg_list_head))) {
sgl = a->free_sg_list_head.next;
result = list_entry(sgl, struct esas2r_mem_desc, next_desc);
list_del_init(sgl);
}
spin_unlock_irqrestore(&a->sg_list_lock, flags);
return result;
}
/* Initialize a scatter/gather context */
static inline void esas2r_sgc_init(struct esas2r_sg_context *sgc,
struct esas2r_adapter *a,
struct esas2r_request *rq,
struct atto_vda_sge *first)
{
sgc->adapter = a;
sgc->first_req = rq;
/*
* set the limit pointer such that an SGE pointer above this value
* would be the first one to overflow the SGL.
*/
sgc->sge.a64.limit = (struct atto_vda_sge *)((u8 *)rq->vrq
+ (sizeof(union
atto_vda_req) /
8)
- sizeof(struct
atto_vda_sge));
if (first) {
sgc->sge.a64.last =
sgc->sge.a64.curr = first;
rq->vrq->scsi.sg_list_offset = (u8)
((u8 *)first -
(u8 *)rq->vrq);
} else {
sgc->sge.a64.last =
sgc->sge.a64.curr = &rq->vrq->scsi.u.sge[0];
rq->vrq->scsi.sg_list_offset =
(u8)offsetof(struct atto_vda_scsi_req, u.sge);
}
sgc->sge.a64.chain = NULL;
}
static inline void esas2r_rq_init_request(struct esas2r_request *rq,
struct esas2r_adapter *a)
{
union atto_vda_req *vrq = rq->vrq;
INIT_LIST_HEAD(&rq->sg_table_head);
rq->data_buf = (void *)(vrq + 1);
rq->interrupt_cb = NULL;
rq->comp_cb = esas2r_complete_request_cb;
rq->flags = 0;
rq->timeout = 0;
rq->req_stat = RS_PENDING;
rq->req_type = RT_INI_REQ;
/* clear the outbound response */
rq->func_rsp.dwords[0] = 0;
rq->func_rsp.dwords[1] = 0;
/*
* clear the size of the VDA request. esas2r_build_sg_list() will
* only allow the size of the request to grow. there are some
* management requests that go through there twice and the second
* time through sets a smaller request size. if this is not modified
* at all we'll set it to the size of the entire VDA request.
*/
rq->vda_req_sz = RQ_SIZE_DEFAULT;
/* req_table entry should be NULL at this point - if not, halt */
if (a->req_table[LOWORD(vrq->scsi.handle)]) {
esas2r_bugon();
}
/* fill in the table for this handle so we can get back to the
* request.
*/
a->req_table[LOWORD(vrq->scsi.handle)] = rq;
/*
* add a reference number to the handle to make it unique (until it
* wraps of course) while preserving the least significant word
*/
vrq->scsi.handle = (a->cmd_ref_no++ << 16) | (u16)vrq->scsi.handle;
/*
* the following formats a SCSI request. the caller can override as
* necessary. clear_vda_request can be called to clear the VDA
* request for another type of request.
*/
vrq->scsi.function = VDA_FUNC_SCSI;
vrq->scsi.sense_len = SENSE_DATA_SZ;
/* clear out sg_list_offset and chain_offset */
vrq->scsi.sg_list_offset = 0;
vrq->scsi.chain_offset = 0;
vrq->scsi.flags = 0;
vrq->scsi.reserved = 0;
/* set the sense buffer to be the data payload buffer */
vrq->scsi.ppsense_buf
= cpu_to_le64(rq->vrq_md->phys_addr +
sizeof(union atto_vda_req));
}
static inline void esas2r_rq_free_sg_lists(struct esas2r_request *rq,
struct esas2r_adapter *a)
{
unsigned long flags;
if (list_empty(&rq->sg_table_head))
return;
spin_lock_irqsave(&a->sg_list_lock, flags);
list_splice_tail_init(&rq->sg_table_head, &a->free_sg_list_head);
spin_unlock_irqrestore(&a->sg_list_lock, flags);
}
static inline void esas2r_rq_destroy_request(struct esas2r_request *rq,
struct esas2r_adapter *a)
{
esas2r_rq_free_sg_lists(rq, a);
a->req_table[LOWORD(rq->vrq->scsi.handle)] = NULL;
rq->data_buf = NULL;
}
static inline bool esas2r_is_tasklet_pending(struct esas2r_adapter *a)
{
return test_bit(AF_BUSRST_NEEDED, &a->flags) ||
test_bit(AF_BUSRST_DETECTED, &a->flags) ||
test_bit(AF_CHPRST_NEEDED, &a->flags) ||
test_bit(AF_CHPRST_DETECTED, &a->flags) ||
test_bit(AF_PORT_CHANGE, &a->flags);
}
/*
* Build the scatter/gather list for an I/O request according to the
* specifications placed in the esas2r_sg_context. The caller must initialize
* struct esas2r_sg_context prior to the initial call by calling
* esas2r_sgc_init()
*/
static inline bool esas2r_build_sg_list(struct esas2r_adapter *a,
struct esas2r_request *rq,
struct esas2r_sg_context *sgc)
{
if (unlikely(le32_to_cpu(rq->vrq->scsi.length) == 0))
return true;
return (*a->build_sgl)(a, sgc);
}
static inline void esas2r_disable_chip_interrupts(struct esas2r_adapter *a)
{
if (atomic_inc_return(&a->dis_ints_cnt) == 1)
esas2r_write_register_dword(a, MU_INT_MASK_OUT,
ESAS2R_INT_DIS_MASK);
}
static inline void esas2r_enable_chip_interrupts(struct esas2r_adapter *a)
{
if (atomic_dec_return(&a->dis_ints_cnt) == 0)
esas2r_write_register_dword(a, MU_INT_MASK_OUT,
ESAS2R_INT_ENB_MASK);
}
/* Schedule a TASKLET to perform non-interrupt tasks that may require delays
* or long completion times.
*/
static inline void esas2r_schedule_tasklet(struct esas2r_adapter *a)
{
/* make sure we don't schedule twice */
if (!test_and_set_bit(AF_TASKLET_SCHEDULED, &a->flags))
tasklet_hi_schedule(&a->tasklet);
}
static inline void esas2r_enable_heartbeat(struct esas2r_adapter *a)
{
if (!test_bit(AF_DEGRADED_MODE, &a->flags) &&
!test_bit(AF_CHPRST_PENDING, &a->flags) &&
(a->nvram->options2 & SASNVR2_HEARTBEAT))
set_bit(AF_HEARTBEAT_ENB, &a->flags);
else
clear_bit(AF_HEARTBEAT_ENB, &a->flags);
}
static inline void esas2r_disable_heartbeat(struct esas2r_adapter *a)
{
clear_bit(AF_HEARTBEAT_ENB, &a->flags);
clear_bit(AF_HEARTBEAT, &a->flags);
}
/* Set the initial state for resetting the adapter on the next pass through
* esas2r_do_deferred.
*/
static inline void esas2r_local_reset_adapter(struct esas2r_adapter *a)
{
esas2r_disable_heartbeat(a);
set_bit(AF_CHPRST_NEEDED, &a->flags);
set_bit(AF_CHPRST_PENDING, &a->flags);
set_bit(AF_DISC_PENDING, &a->flags);
}
/* See if an interrupt is pending on the adapter. */
static inline bool esas2r_adapter_interrupt_pending(struct esas2r_adapter *a)
{
u32 intstat;
if (a->int_mask == 0)
return false;
intstat = esas2r_read_register_dword(a, MU_INT_STATUS_OUT);
if ((intstat & a->int_mask) == 0)
return false;
esas2r_disable_chip_interrupts(a);
a->int_stat = intstat;
a->int_mask = 0;
return true;
}
static inline u16 esas2r_targ_get_id(struct esas2r_target *t,
struct esas2r_adapter *a)
{
return (u16)(uintptr_t)(t - a->targetdb);
}
/* Build and start an asynchronous event request */
static inline void esas2r_start_ae_request(struct esas2r_adapter *a,
struct esas2r_request *rq)
{
unsigned long flags;
esas2r_build_ae_req(a, rq);
spin_lock_irqsave(&a->queue_lock, flags);
esas2r_start_vda_request(a, rq);
spin_unlock_irqrestore(&a->queue_lock, flags);
}
static inline void esas2r_comp_list_drain(struct esas2r_adapter *a,
struct list_head *comp_list)
{
struct esas2r_request *rq;
struct list_head *element, *next;
list_for_each_safe(element, next, comp_list) {
rq = list_entry(element, struct esas2r_request, comp_list);
list_del_init(element);
esas2r_complete_request(a, rq);
}
}
/* sysfs handlers */
extern struct bin_attribute bin_attr_fw;
extern struct bin_attribute bin_attr_fs;
extern struct bin_attribute bin_attr_vda;
extern struct bin_attribute bin_attr_hw;
extern struct bin_attribute bin_attr_live_nvram;
extern struct bin_attribute bin_attr_default_nvram;
#endif /* ESAS2R_H */
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