drivers/scsi/isci/probe_roms.h

   1 /*
   2  * This file is provided under a dual BSD/GPLv2 license.  When using or
   3  * redistributing this file, you may do so under either license.
   4  *
   5  * GPL LICENSE SUMMARY
   6  *
   7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of version 2 of the GNU General Public License as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  21  * The full GNU General Public License is included in this distribution
  22  * in the file called LICENSE.GPL.
  23  *
  24  * BSD LICENSE
  25  *
  26  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  *
  33  *   * Redistributions of source code must retain the above copyright
  34  *     notice, this list of conditions and the following disclaimer.
  35  *   * Redistributions in binary form must reproduce the above copyright
  36  *     notice, this list of conditions and the following disclaimer in
  37  *     the documentation and/or other materials provided with the
  38  *     distribution.
  39  *   * Neither the name of Intel Corporation nor the names of its
  40  *     contributors may be used to endorse or promote products derived
  41  *     from this software without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  44  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  45  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  46  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  47  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  48  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  49  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  50  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  51  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  52  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  53  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  54  */
  55 #ifndef _ISCI_PROBE_ROMS_H_
  56 #define _ISCI_PROBE_ROMS_H_
  57
  58 #ifdef __KERNEL__
  59 #include <linux/firmware.h>
  60 #include <linux/pci.h>
  61 #include <linux/efi.h>
  62 #include "isci.h"
  63
  64 #define SCIC_SDS_PARM_NO_SPEED   0
  65
  66 /* generation 1 (i.e. 1.5 Gb/s) */
  67 #define SCIC_SDS_PARM_GEN1_SPEED 1
  68
  69 /* generation 2 (i.e. 3.0 Gb/s) */
  70 #define SCIC_SDS_PARM_GEN2_SPEED 2
  71
  72 /* generation 3 (i.e. 6.0 Gb/s) */
  73 #define SCIC_SDS_PARM_GEN3_SPEED 3
  74 #define SCIC_SDS_PARM_MAX_SPEED SCIC_SDS_PARM_GEN3_SPEED
  75
  76 /* parameters that can be set by module parameters */
  77 struct sci_user_parameters {
  78         struct sci_phy_user_params {
  79                 /**
  80                  * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
  81                  * insertion frequency for this phy index.
  82                  */
  83                 u32 notify_enable_spin_up_insertion_frequency;
  84
  85                 /**
  86                  * This method specifies the number of transmitted DWORDs within which
  87                  * to transmit a single ALIGN primitive.  This value applies regardless
  88                  * of what type of device is attached or connection state.  A value of
  89                  * 0 indicates that no ALIGN primitives will be inserted.
  90                  */
  91                 u16 align_insertion_frequency;
  92
  93                 /**
  94                  * This method specifies the number of transmitted DWORDs within which
  95                  * to transmit 2 ALIGN primitives.  This applies for SAS connections
  96                  * only.  A minimum value of 3 is required for this field.
  97                  */
  98                 u16 in_connection_align_insertion_frequency;
  99
 100                 /**
 101                  * This field indicates the maximum speed generation to be utilized
 102                  * by phys in the supplied port.
 103                  * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
 104                  * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
 105                  * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
 106                  */
 107                 u8 max_speed_generation;
 108
 109         } phys[SCI_MAX_PHYS];
 110
 111         /**
 112          * This field specifies the maximum number of direct attached devices
 113          * that can have power supplied to them simultaneously.
 114          */
 115         u8 max_concurr_spinup;
 116
 117         /**
 118          * This field specifies the number of seconds to allow a phy to consume
 119          * power before yielding to another phy.
 120          *
 121          */
 122         u8 phy_spin_up_delay_interval;
 123
 124         /**
 125          * These timer values specifies how long a link will remain open with no
 126          * activity in increments of a microsecond, it can be in increments of
 127          * 100 microseconds if the upper most bit is set.
 128          *
 129          */
 130         u16 stp_inactivity_timeout;
 131         u16 ssp_inactivity_timeout;
 132
 133         /**
 134          * These timer values specifies how long a link will remain open in increments
 135          * of 100 microseconds.
 136          *
 137          */
 138         u16 stp_max_occupancy_timeout;
 139         u16 ssp_max_occupancy_timeout;
 140
 141         /**
 142          * This timer value specifies how long a link will remain open with no
 143          * outbound traffic in increments of a microsecond.
 144          *
 145          */
 146         u8 no_outbound_task_timeout;
 147
 148 };
 149
 150 #define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
 151 #define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
 152 #define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
 153
 154 struct sci_oem_params;
 155 int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version);
 156
 157 struct isci_orom;
 158 struct isci_orom *isci_request_oprom(struct pci_dev *pdev);
 159 enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem,
 160                                           struct isci_orom *orom, int scu_index);
 161 struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw);
 162 struct isci_orom *isci_get_efi_var(struct pci_dev *pdev);
 163
 164 struct isci_oem_hdr {
 165         u8 sig[4];
 166         u8 rev_major;
 167         u8 rev_minor;
 168         u16 len;
 169         u8 checksum;
 170         u8 reserved1;
 171         u16 reserved2;
 172 } __attribute__ ((packed));
 173
 174 #else
 175 #define SCI_MAX_PORTS 4
 176 #define SCI_MAX_PHYS 4
 177 #define SCI_MAX_CONTROLLERS 2
 178 #endif
 179
 180 #define ISCI_FW_NAME            "isci/isci_firmware.bin"
 181
 182 #define ROMSIGNATURE            0xaa55
 183
 184 #define ISCI_OEM_SIG            "$OEM"
 185 #define ISCI_OEM_SIG_SIZE       4
 186 #define ISCI_ROM_SIG            "ISCUOEMB"
 187 #define ISCI_ROM_SIG_SIZE       8
 188
 189 #define ISCI_EFI_VENDOR_GUID    \
 190         EFI_GUID(0x193dfefa, 0xa445, 0x4302, 0x99, 0xd8, 0xef, 0x3a, 0xad, \
 191                         0x1a, 0x04, 0xc6)
 192 #define ISCI_EFI_VAR_NAME       "RstScuO"
 193
 194 #define ISCI_ROM_VER_1_0        0x10
 195 #define ISCI_ROM_VER_1_1        0x11
 196 #define ISCI_ROM_VER_1_3        0x13
 197 #define ISCI_ROM_VER_LATEST     ISCI_ROM_VER_1_3
 198
 199 /* Allowed PORT configuration modes APC Automatic PORT configuration mode is
 200  * defined by the OEM configuration parameters providing no PHY_MASK parameters
 201  * for any PORT. i.e. There are no phys assigned to any of the ports at start.
 202  * MPC Manual PORT configuration mode is defined by the OEM configuration
 203  * parameters providing a PHY_MASK value for any PORT.  It is assumed that any
 204  * PORT with no PHY_MASK is an invalid port and not all PHYs must be assigned.
 205  * A PORT_PHY mask that assigns just a single PHY to a port and no other PHYs
 206  * being assigned is sufficient to declare manual PORT configuration.
 207  */
 208 enum sci_port_configuration_mode {
 209         SCIC_PORT_MANUAL_CONFIGURATION_MODE = 0,
 210         SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE = 1
 211 };
 212
 213 struct sci_bios_oem_param_block_hdr {
 214         uint8_t signature[ISCI_ROM_SIG_SIZE];
 215         uint16_t total_block_length;
 216         uint8_t hdr_length;
 217         uint8_t version;
 218         uint8_t preboot_source;
 219         uint8_t num_elements;
 220         uint16_t element_length;
 221         uint8_t reserved[8];
 222 } __attribute__ ((packed));
 223
 224 struct sci_oem_params {
 225         struct {
 226                 uint8_t mode_type;
 227                 uint8_t max_concurr_spin_up;
 228                 /*
 229                  * This bitfield indicates the OEM's desired default Tx
 230                  * Spread Spectrum Clocking (SSC) settings for SATA and SAS.
 231                  * NOTE: Default SSC Modulation Frequency is 31.5KHz.
 232                  */
 233                 union {
 234                         struct {
 235                         /*
 236                          * NOTE: Max spread for SATA is +0 / -5000 PPM.
 237                          * Down-spreading SSC (only method allowed for SATA):
 238                          *  SATA SSC Tx Disabled                    = 0x0
 239                          *  SATA SSC Tx at +0 / -1419 PPM Spread    = 0x2
 240                          *  SATA SSC Tx at +0 / -2129 PPM Spread    = 0x3
 241                          *  SATA SSC Tx at +0 / -4257 PPM Spread    = 0x6
 242                          *  SATA SSC Tx at +0 / -4967 PPM Spread    = 0x7
 243                          */
 244                                 uint8_t ssc_sata_tx_spread_level:4;
 245                         /*
 246                          * SAS SSC Tx Disabled                     = 0x0
 247                          *
 248                          * NOTE: Max spread for SAS down-spreading +0 /
 249                          *       -2300 PPM
 250                          * Down-spreading SSC:
 251                          *  SAS SSC Tx at +0 / -1419 PPM Spread     = 0x2
 252                          *  SAS SSC Tx at +0 / -2129 PPM Spread     = 0x3
 253                          *
 254                          * NOTE: Max spread for SAS center-spreading +2300 /
 255                          *       -2300 PPM
 256                          * Center-spreading SSC:
 257                          *  SAS SSC Tx at +1064 / -1064 PPM Spread  = 0x3
 258                          *  SAS SSC Tx at +2129 / -2129 PPM Spread  = 0x6
 259                          */
 260                                 uint8_t ssc_sas_tx_spread_level:3;
 261                         /*
 262                          * NOTE: Refer to the SSC section of the SAS 2.x
 263                          * Specification for proper setting of this field.
 264                          * For standard SAS Initiator SAS PHY operation it
 265                          * should be 0 for Down-spreading.
 266                          * SAS SSC Tx spread type:
 267                          *  Down-spreading SSC      = 0
 268                          *  Center-spreading SSC    = 1
 269                          */
 270                                 uint8_t ssc_sas_tx_type:1;
 271                         };
 272                         uint8_t do_enable_ssc;
 273                 };
 274                 /*
 275                  * This field indicates length of the SAS/SATA cable between
 276                  * host and device.
 277                  * This field is used make relationship between analog
 278                  * parameters of the phy in the silicon and length of the cable.
 279                  * Supported cable attenuation levels:
 280                  * "short"- up to 3m, "medium"-3m to 6m, and "long"- more than
 281                  * 6m.
 282                  *
 283                  * This is bit mask field:
 284                  *
 285                  * BIT:      (MSB) 7     6     5     4
 286                  * ASSIGNMENT:   <phy3><phy2><phy1><phy0>  - Medium cable
 287                  *                                           length assignment
 288                  * BIT:            3     2     1     0  (LSB)
 289                  * ASSIGNMENT:   <phy3><phy2><phy1><phy0>  - Long cable length
 290                  *                                           assignment
 291                  *
 292                  * BITS 7-4 are set when the cable length is assigned to medium
 293                  * BITS 3-0 are set when the cable length is assigned to long
 294                  *
 295                  * The BIT positions are clear when the cable length is
 296                  * assigned to short.
 297                  *
 298                  * Setting the bits for both long and medium cable length is
 299                  * undefined.
 300                  *
 301                  * A value of 0x84 would assign
 302                  *    phy3 - medium
 303                  *    phy2 - long
 304                  *    phy1 - short
 305                  *    phy0 - short
 306                  */
 307                 uint8_t cable_selection_mask;
 308         } controller;
 309
 310         struct {
 311                 uint8_t phy_mask;
 312         } ports[SCI_MAX_PORTS];
 313
 314         struct sci_phy_oem_params {
 315                 struct {
 316                         uint32_t high;
 317                         uint32_t low;
 318                 } sas_address;
 319
 320                 uint32_t afe_tx_amp_control0;
 321                 uint32_t afe_tx_amp_control1;
 322                 uint32_t afe_tx_amp_control2;
 323                 uint32_t afe_tx_amp_control3;
 324         } phys[SCI_MAX_PHYS];
 325 } __attribute__ ((packed));
 326
 327 struct isci_orom {
 328         struct sci_bios_oem_param_block_hdr hdr;
 329         struct sci_oem_params ctrl[SCI_MAX_CONTROLLERS];
 330 } __attribute__ ((packed));
 331
 332 #endif