273 lines
9.1 KiB
C
273 lines
9.1 KiB
C
/*
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* Copyright (c) 2010, LSI Corp.
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* All rights reserved.
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* Author : Manjunath Ranganathaiah
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* Support: freebsdraid@lsi.com
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of the <ORGANIZATION> nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h> /* defines used in kernel.h */
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/errno.h>
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#include <sys/kernel.h> /* types used in module initialization */
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#include <sys/conf.h> /* cdevsw struct */
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#include <sys/uio.h> /* uio struct */
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#include <sys/malloc.h>
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#include <sys/bus.h> /* structs, prototypes for pci bus stuff */
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <machine/resource.h>
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#include <dev/pci/pcivar.h> /* For pci_get macros! */
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#include <dev/pci/pcireg.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <sys/stat.h>
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#define TWS_PULL_MODE_ENABLE 1
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MALLOC_DECLARE(M_TWS);
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/* externs */
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extern int tws_queue_depth;
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#define TWS_DRIVER_VERSION_STRING "10.80.00.005"
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#define TWS_MAX_NUM_UNITS 65
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#define TWS_MAX_NUM_LUNS 16
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#define TWS_MAX_IRQS 2
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#define TWS_SCSI_INITIATOR_ID 66
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#define TWS_MAX_IO_SIZE 0x20000 /* 128kB */
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#define TWS_SECTOR_SIZE 0x200
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#define TWS_POLL_TIMEOUT 60
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#define TWS_IO_TIMEOUT 60
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#define TWS_IOCTL_TIMEOUT 60
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#define TWS_RESET_TIMEOUT 60
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#define TWS_PCI_BAR0 0x10
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#define TWS_PCI_BAR1 0x14
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#define TWS_PCI_BAR2 0x1C
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#define TWS_VENDOR_ID 0x13C1
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#define TWS_DEVICE_ID 0x1010
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#define TWS_INVALID_REQID 0xFFFF
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/* bus tag related */
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#define TWS_ALIGNMENT 4
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#define TWS_IN_MF_ALIGNMENT 16
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#define TWS_OUT_MF_ALIGNMENT 4
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#define TWS_MAX_32BIT_SG_ELEMENTS 93 /* max 32-bit sg elements */
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#define TWS_MAX_64BIT_SG_ELEMENTS 46 /* max 64-bit sg elements */
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#define TWS_MAX_QS 4
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#define TWS_MAX_REQS 256
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#define TWS_RESERVED_REQS 4
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/* Request states */
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#define TWS_REQ_STATE_FREE 0
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#define TWS_REQ_STATE_BUSY 1
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#define TWS_REQ_STATE_TRAN 2
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#define TWS_REQ_STATE_COMPLETE 3
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/* Request types */
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#define TWS_REQ_TYPE_INTERNAL_CMD 0x0
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#define TWS_REQ_TYPE_AEN_FETCH 0x1
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#define TWS_REQ_TYPE_PASSTHRU 0x2
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#define TWS_REQ_TYPE_GETSET_PARAM 0x3
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#define TWS_REQ_TYPE_SCSI_IO 0x4
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/* Driver states */
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enum tws_states {
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TWS_INIT=50,
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TWS_UNINIT,
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TWS_OFFLINE,
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TWS_ONLINE,
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TWS_RESET,
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};
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/* events */
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enum tws_events {
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TWS_INIT_START=100,
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TWS_INIT_COMPLETE,
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TWS_UNINIT_START,
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TWS_RESET_START,
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TWS_RESET_COMPLETE,
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TWS_SCAN_FAILURE,
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};
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enum tws_req_flags {
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TWS_DIR_UNKNOWN = 0x1,
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TWS_DIR_IN = 0x2,
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TWS_DIR_OUT = 0x4,
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TWS_DIR_NONE = 0x8,
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TWS_DATA_CCB = 0x10,
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};
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enum tws_intrs {
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TWS_INTx,
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TWS_MSI,
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TWS_MSIX,
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};
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struct tws_msix_info {
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int tbl_res_id;
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bus_space_tag_t tbl_tag;
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bus_space_handle_t tbl_handle;
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struct resource *tbl_res;
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};
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struct tws_ioctl_lock {
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u_int32_t lock;
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time_t timeout;
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};
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#define TWS_TRACE_FNAME_LEN 10
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#define TWS_TRACE_FUNC_LEN 15
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#define TWS_TRACE_DESC_LEN 10
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struct tws_trace_rec {
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struct timespec ts;
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char fname[TWS_TRACE_FNAME_LEN];
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char func[TWS_TRACE_FUNC_LEN];
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int linenum;
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char desc[TWS_TRACE_DESC_LEN];
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u_int64_t val1;
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u_int64_t val2;
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};
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struct tws_circular_q {
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volatile int16_t head;
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volatile int16_t tail;
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u_int16_t depth;
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u_int8_t overflow;
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void * q;
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};
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struct tws_stats {
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u_int64_t reqs_in;
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u_int64_t reqs_out;
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u_int64_t reqs_errored;
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u_int64_t spurios_intrs;
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u_int64_t num_intrs;
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u_int64_t num_aens;
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u_int64_t ioctls;
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u_int64_t scsi_ios;
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};
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struct tws_init_connect_info {
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u_int16_t working_srl;
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u_int16_t working_branch;
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u_int16_t working_build;
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u_int16_t fw_on_ctlr_srl;
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u_int16_t fw_on_ctlr_branch;
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u_int16_t fw_on_ctlr_build;
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};
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/* ------------ boolean types ------------------- */
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#ifndef __bool_true_false_are_defined
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typedef enum _boolean { false, true } boolean;
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#else
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#define boolean bool
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#endif
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enum err { SUCCESS, FAILURE };
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/* ----------- per instance data ---------------- */
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/* The softc holds our per-instance data. */
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struct tws_softc {
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device_t tws_dev; /* bus device */
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struct cdev *tws_cdev; /* controller device */
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u_int32_t device_id; /* device id */
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u_int32_t subvendor_id; /* device id */
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u_int32_t subdevice_id; /* device id */
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u_int8_t tws_state; /* driver state */
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u_int8_t tws_prev_state; /* driver prev state */
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struct sysctl_ctx_list tws_clist; /* sysctl context */
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struct sysctl_oid *tws_oidp; /* sysctl context */
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struct resource *reg_res; /* register interface window */
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struct resource *mfa_res; /* mfa interface window */
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int reg_res_id; /* register resource id */
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int mfa_res_id; /* register resource id */
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bus_space_handle_t bus_handle; /* bus space handle */
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bus_space_handle_t bus_mfa_handle; /* bus space handle */
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bus_space_tag_t bus_tag; /* bus space tag */
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bus_space_tag_t bus_mfa_tag; /* bus space tag for mfa's */
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u_int64_t mfa_base; /* mfa base address */
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struct resource *irq_res[TWS_MAX_IRQS];/* interrupt resource */
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int irq_res_id[TWS_MAX_IRQS]; /* intr resource id */
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void *intr_handle[TWS_MAX_IRQS]; /* interrupt handle */
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int irqs; /* intrs used */
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struct tws_msix_info msix; /* msix info */
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struct cam_sim *sim; /* sim for this controller */
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struct cam_path *path; /* Ctlr path to CAM */
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struct mtx q_lock; /* queue lock */
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struct mtx sim_lock; /* sim lock */
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struct mtx gen_lock; /* general driver lock */
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struct mtx io_lock; /* IO lock */
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struct tws_ioctl_lock ioctl_lock; /* ioctl lock */
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u_int32_t seq_id; /* Sequence id */
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void *chan; /* IOCTL req wait channel */
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struct tws_circular_q aen_q; /* aen q */
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struct tws_circular_q trace_q; /* trace q */
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struct tws_stats stats; /* I/O stats */
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struct tws_init_connect_info cinfo; /* compatibility info */
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boolean is64bit; /* True - 64bit else 32bit */
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u_int8_t intr_type; /* Interrupt type used */
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bus_dma_tag_t parent_tag; /* parent DMA tag */
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bus_dma_tag_t cmd_tag; /* command DMA tag */
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bus_dmamap_t cmd_map; /* command map */
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void *dma_mem; /* pointer to dmable memory */
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u_int64_t dma_mem_phys; /* phy addr */
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bus_dma_tag_t data_tag; /* data DMA tag */
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void *ioctl_data_mem; /* ioctl dmable memory */
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bus_dmamap_t ioctl_data_map; /* ioctl data map */
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struct tws_request *reqs; /* pointer to requests */
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struct tws_sense *sense_bufs; /* pointer to sense buffers */
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boolean obfl_q_overrun; /* OBFL overrun flag */
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union ccb *scan_ccb; /* pointer to a ccb */
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struct tws_request *q_head[TWS_MAX_QS]; /* head pointers to q's */
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struct tws_request *q_tail[TWS_MAX_QS]; /* tail pointers to q's */
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};
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