drivers/scsi/isci/core/scic_config_parameters.h

   1 /*
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   3  * redistributing this file, you may do so under either license.
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   6  *
   7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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  10  * it under the terms of version 2 of the GNU General Public License as
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  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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  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.
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  55
  56 #ifndef _SCIC_SDS_USER_PARAMETERS_H_
  57 #define _SCIC_SDS_USER_PARAMETERS_H_
  58
  59 /**
  60  * This file contains all of the structure definitions and interface methods
  61  *    that can be called by a SCIC user on the SCU Driver Standard
  62  *    (struct scic_sds_user_parameters) user parameter block.
  63  *
  64  *
  65  */
  66
  67
  68 #include "sci_status.h"
  69 #include "intel_sas.h"
  70 #include "sci_controller_constants.h"
  71 #include "probe_roms.h"
  72
  73 struct scic_sds_controller;
  74
  75 /**
  76  *
  77  *
  78  * SCIC_SDS_PARM_PHY_SPEED These constants define the speeds utilized for a
  79  * phy/port.
  80  */
  81 #define SCIC_SDS_PARM_NO_SPEED   0
  82
  83 /**
  84  *
  85  *
  86  * This value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
  87  */
  88 #define SCIC_SDS_PARM_GEN1_SPEED 1
  89
  90 /**
  91  *
  92  *
  93  * This value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
  94  */
  95 #define SCIC_SDS_PARM_GEN2_SPEED 2
  96
  97 /**
  98  *
  99  *
 100  * This value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
 101  */
 102 #define SCIC_SDS_PARM_GEN3_SPEED 3
 103
 104 /**
 105  *
 106  *
 107  * For range checks, the max speed generation
 108  */
 109 #define SCIC_SDS_PARM_MAX_SPEED SCIC_SDS_PARM_GEN3_SPEED
 110
 111 /**
 112  * struct scic_sds_user_parameters - This structure delineates the various user
 113  *    parameters that can be changed by the core user.
 114  *
 115  *
 116  */
 117 struct scic_sds_user_parameters {
 118         struct sci_phy_user_params {
 119                 /**
 120                  * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
 121                  * insertion frequency for this phy index.
 122                  */
 123                 u32 notify_enable_spin_up_insertion_frequency;
 124
 125                 /**
 126                  * This method specifies the number of transmitted DWORDs within which
 127                  * to transmit a single ALIGN primitive.  This value applies regardless
 128                  * of what type of device is attached or connection state.  A value of
 129                  * 0 indicates that no ALIGN primitives will be inserted.
 130                  */
 131                 u16 align_insertion_frequency;
 132
 133                 /**
 134                  * This method specifies the number of transmitted DWORDs within which
 135                  * to transmit 2 ALIGN primitives.  This applies for SAS connections
 136                  * only.  A minimum value of 3 is required for this field.
 137                  */
 138                 u16 in_connection_align_insertion_frequency;
 139
 140                 /**
 141                  * This field indicates the maximum speed generation to be utilized
 142                  * by phys in the supplied port.
 143                  * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
 144                  * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
 145                  * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
 146                  */
 147                 u8 max_speed_generation;
 148
 149         } phys[SCI_MAX_PHYS];
 150
 151         /**
 152          * This field specifies the maximum number of direct attached devices
 153          * that can have power supplied to them simultaneously.
 154          */
 155         u8 max_number_concurrent_device_spin_up;
 156
 157         /**
 158          * This field specifies the number of seconds to allow a phy to consume
 159          * power before yielding to another phy.
 160          *
 161          */
 162         u8 phy_spin_up_delay_interval;
 163
 164         /**
 165          * These timer values specifies how long a link will remain open with no
 166          * activity in increments of a microsecond, it can be in increments of
 167          * 100 microseconds if the upper most bit is set.
 168          *
 169          */
 170         u16 stp_inactivity_timeout;
 171         u16 ssp_inactivity_timeout;
 172
 173         /**
 174          * These timer values specifies how long a link will remain open in increments
 175          * of 100 microseconds.
 176          *
 177          */
 178         u16 stp_max_occupancy_timeout;
 179         u16 ssp_max_occupancy_timeout;
 180
 181         /**
 182          * This timer value specifies how long a link will remain open with no
 183          * outbound traffic in increments of a microsecond.
 184          *
 185          */
 186         u8 no_outbound_task_timeout;
 187
 188 };
 189
 190 /**
 191  * This structure/union specifies the various different user parameter sets
 192  *    available.  Each type is specific to a hardware controller version.
 193  *
 194  * union scic_user_parameters
 195  */
 196 union scic_user_parameters {
 197         /**
 198          * This field specifies the user parameters specific to the
 199          * Storage Controller Unit (SCU) Driver Standard (SDS) version
 200          * 1.
 201          */
 202         struct scic_sds_user_parameters sds1;
 203
 204 };
 205
 206
 207 /**
 208  *
 209  *
 210  * SCIC_SDS_OEM_PHY_MASK These constants define the valid values for phy_mask
 211  */
 212
 213 /**
 214  *
 215  *
 216  * This is the min value assignable to a port's phy mask
 217  */
 218 #define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
 219
 220 /**
 221  *
 222  *
 223  * This is the max value assignable to a port's phy mask
 224  */
 225 #define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
 226
 227 #define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
 228
 229 /**
 230  * This structure/union specifies the various different OEM parameter sets
 231  *    available.  Each type is specific to a hardware controller version.
 232  *
 233  * union scic_oem_parameters
 234  */
 235 union scic_oem_parameters {
 236         /**
 237          * This field specifies the OEM parameters specific to the
 238          * Storage Controller Unit (SCU) Driver Standard (SDS) version
 239          * 1.
 240          */
 241         struct scic_sds_oem_params sds1;
 242 };
 243
 244 /**
 245  * scic_user_parameters_set() - This method allows the user to attempt to
 246  *    change the user parameters utilized by the controller.
 247  * @controller: This parameter specifies the controller on which to set the
 248  *    user parameters.
 249  * @user_parameters: This parameter specifies the USER_PARAMETERS object
 250  *    containing the potential new values.
 251  *
 252  * Indicate if the update of the user parameters was successful. SCI_SUCCESS
 253  * This value is returned if the operation succeeded. SCI_FAILURE_INVALID_STATE
 254  * This value is returned if the attempt to change the user parameter failed,
 255  * because changing one of the parameters is not currently allowed.
 256  * SCI_FAILURE_INVALID_PARAMETER_VALUE This value is returned if the user
 257  * supplied an invalid interrupt coalescence time, spin up delay interval, etc.
 258  */
 259 enum sci_status scic_user_parameters_set(
 260         struct scic_sds_controller *controller,
 261         union scic_user_parameters *user_parameters);
 262
 263 /**
 264  * scic_oem_parameters_set() - This method allows the user to attempt to change
 265  *    the OEM parameters utilized by the controller.
 266  * @controller: This parameter specifies the controller on which to set the
 267  *    user parameters.
 268  * @oem_parameters: This parameter specifies the OEM parameters object
 269  *    containing the potential new values.
 270  *
 271  * Indicate if the update of the user parameters was successful. SCI_SUCCESS
 272  * This value is returned if the operation succeeded. SCI_FAILURE_INVALID_STATE
 273  * This value is returned if the attempt to change the user parameter failed,
 274  * because changing one of the parameters is not currently allowed.
 275  * SCI_FAILURE_INVALID_PARAMETER_VALUE This value is returned if the user
 276  * supplied an unsupported value for one of the OEM parameters.
 277  */
 278 enum sci_status scic_oem_parameters_set(
 279         struct scic_sds_controller *controller,
 280         union scic_oem_parameters *oem_parameters);
 281
 282 int scic_oem_parameters_validate(struct scic_sds_oem_params *oem);
 283
 284 /**
 285  * scic_oem_parameters_get() - This method allows the user to retreive the OEM
 286  *    parameters utilized by the controller.
 287  * @controller: This parameter specifies the controller on which to set the
 288  *    user parameters.
 289  * @oem_parameters: This parameter specifies the OEM parameters object in which
 290  *    to write the core's OEM parameters.
 291  *
 292  */
 293 void scic_oem_parameters_get(
 294         struct scic_sds_controller *controller,
 295         union scic_oem_parameters *oem_parameters);
 296
 297
 298 #endif  /* _SCIC_SDS_USER_PARAMETERS_H_ */
 299