drivers/scsi/isci/core/scic_config_parameters.h

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   3  * redistributing this file, you may do so under either license.
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   7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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  20  * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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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 "sci_controller_constants.h"
  70 #include "probe_roms.h"
  71
  72 struct scic_sds_controller;
  73
  74 /**
  75  *
  76  *
  77  * SCIC_SDS_PARM_PHY_SPEED These constants define the speeds utilized for a
  78  * phy/port.
  79  */
  80 #define SCIC_SDS_PARM_NO_SPEED   0
  81
  82 /**
  83  *
  84  *
  85  * This value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
  86  */
  87 #define SCIC_SDS_PARM_GEN1_SPEED 1
  88
  89 /**
  90  *
  91  *
  92  * This value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
  93  */
  94 #define SCIC_SDS_PARM_GEN2_SPEED 2
  95
  96 /**
  97  *
  98  *
  99  * This value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
 100  */
 101 #define SCIC_SDS_PARM_GEN3_SPEED 3
 102
 103 /**
 104  *
 105  *
 106  * For range checks, the max speed generation
 107  */
 108 #define SCIC_SDS_PARM_MAX_SPEED SCIC_SDS_PARM_GEN3_SPEED
 109
 110 /**
 111  * struct scic_sds_user_parameters - This structure delineates the various user
 112  *    parameters that can be changed by the core user.
 113  *
 114  *
 115  */
 116 struct scic_sds_user_parameters {
 117         struct sci_phy_user_params {
 118                 /**
 119                  * This field specifies the NOTIFY (ENABLE SPIN UP) primitive
 120                  * insertion frequency for this phy index.
 121                  */
 122                 u32 notify_enable_spin_up_insertion_frequency;
 123
 124                 /**
 125                  * This method specifies the number of transmitted DWORDs within which
 126                  * to transmit a single ALIGN primitive.  This value applies regardless
 127                  * of what type of device is attached or connection state.  A value of
 128                  * 0 indicates that no ALIGN primitives will be inserted.
 129                  */
 130                 u16 align_insertion_frequency;
 131
 132                 /**
 133                  * This method specifies the number of transmitted DWORDs within which
 134                  * to transmit 2 ALIGN primitives.  This applies for SAS connections
 135                  * only.  A minimum value of 3 is required for this field.
 136                  */
 137                 u16 in_connection_align_insertion_frequency;
 138
 139                 /**
 140                  * This field indicates the maximum speed generation to be utilized
 141                  * by phys in the supplied port.
 142                  * - A value of 1 indicates generation 1 (i.e. 1.5 Gb/s).
 143                  * - A value of 2 indicates generation 2 (i.e. 3.0 Gb/s).
 144                  * - A value of 3 indicates generation 3 (i.e. 6.0 Gb/s).
 145                  */
 146                 u8 max_speed_generation;
 147
 148         } phys[SCI_MAX_PHYS];
 149
 150         /**
 151          * This field specifies the maximum number of direct attached devices
 152          * that can have power supplied to them simultaneously.
 153          */
 154         u8 max_number_concurrent_device_spin_up;
 155
 156         /**
 157          * This field specifies the number of seconds to allow a phy to consume
 158          * power before yielding to another phy.
 159          *
 160          */
 161         u8 phy_spin_up_delay_interval;
 162
 163         /**
 164          * These timer values specifies how long a link will remain open with no
 165          * activity in increments of a microsecond, it can be in increments of
 166          * 100 microseconds if the upper most bit is set.
 167          *
 168          */
 169         u16 stp_inactivity_timeout;
 170         u16 ssp_inactivity_timeout;
 171
 172         /**
 173          * These timer values specifies how long a link will remain open in increments
 174          * of 100 microseconds.
 175          *
 176          */
 177         u16 stp_max_occupancy_timeout;
 178         u16 ssp_max_occupancy_timeout;
 179
 180         /**
 181          * This timer value specifies how long a link will remain open with no
 182          * outbound traffic in increments of a microsecond.
 183          *
 184          */
 185         u8 no_outbound_task_timeout;
 186
 187 };
 188
 189 /**
 190  * This structure/union specifies the various different user parameter sets
 191  *    available.  Each type is specific to a hardware controller version.
 192  *
 193  * union scic_user_parameters
 194  */
 195 union scic_user_parameters {
 196         /**
 197          * This field specifies the user parameters specific to the
 198          * Storage Controller Unit (SCU) Driver Standard (SDS) version
 199          * 1.
 200          */
 201         struct scic_sds_user_parameters sds1;
 202
 203 };
 204
 205
 206 /**
 207  *
 208  *
 209  * SCIC_SDS_OEM_PHY_MASK These constants define the valid values for phy_mask
 210  */
 211
 212 /**
 213  *
 214  *
 215  * This is the min value assignable to a port's phy mask
 216  */
 217 #define SCIC_SDS_PARM_PHY_MASK_MIN 0x0
 218
 219 /**
 220  *
 221  *
 222  * This is the max value assignable to a port's phy mask
 223  */
 224 #define SCIC_SDS_PARM_PHY_MASK_MAX 0xF
 225
 226 #define MAX_CONCURRENT_DEVICE_SPIN_UP_COUNT 4
 227
 228 /**
 229  * This structure/union specifies the various different OEM parameter sets
 230  *    available.  Each type is specific to a hardware controller version.
 231  *
 232  * union scic_oem_parameters
 233  */
 234 union scic_oem_parameters {
 235         /**
 236          * This field specifies the OEM parameters specific to the
 237          * Storage Controller Unit (SCU) Driver Standard (SDS) version
 238          * 1.
 239          */
 240         struct scic_sds_oem_params sds1;
 241 };
 242
 243 /**
 244  * scic_user_parameters_set() - This method allows the user to attempt to
 245  *    change the user parameters utilized by the controller.
 246  * @controller: This parameter specifies the controller on which to set the
 247  *    user parameters.
 248  * @user_parameters: This parameter specifies the USER_PARAMETERS object
 249  *    containing the potential new values.
 250  *
 251  * Indicate if the update of the user parameters was successful. SCI_SUCCESS
 252  * This value is returned if the operation succeeded. SCI_FAILURE_INVALID_STATE
 253  * This value is returned if the attempt to change the user parameter failed,
 254  * because changing one of the parameters is not currently allowed.
 255  * SCI_FAILURE_INVALID_PARAMETER_VALUE This value is returned if the user
 256  * supplied an invalid interrupt coalescence time, spin up delay interval, etc.
 257  */
 258 enum sci_status scic_user_parameters_set(
 259         struct scic_sds_controller *controller,
 260         union scic_user_parameters *user_parameters);
 261
 262 /**
 263  * scic_oem_parameters_set() - This method allows the user to attempt to change
 264  *    the OEM parameters utilized by the controller.
 265  * @controller: This parameter specifies the controller on which to set the
 266  *    user parameters.
 267  * @oem_parameters: This parameter specifies the OEM parameters object
 268  *    containing the potential new values.
 269  *
 270  * Indicate if the update of the user parameters was successful. SCI_SUCCESS
 271  * This value is returned if the operation succeeded. SCI_FAILURE_INVALID_STATE
 272  * This value is returned if the attempt to change the user parameter failed,
 273  * because changing one of the parameters is not currently allowed.
 274  * SCI_FAILURE_INVALID_PARAMETER_VALUE This value is returned if the user
 275  * supplied an unsupported value for one of the OEM parameters.
 276  */
 277 enum sci_status scic_oem_parameters_set(
 278         struct scic_sds_controller *controller,
 279         union scic_oem_parameters *oem_parameters);
 280
 281 int scic_oem_parameters_validate(struct scic_sds_oem_params *oem);
 282
 283 /**
 284  * scic_oem_parameters_get() - This method allows the user to retreive the OEM
 285  *    parameters utilized by the controller.
 286  * @controller: This parameter specifies the controller on which to set the
 287  *    user parameters.
 288  * @oem_parameters: This parameter specifies the OEM parameters object in which
 289  *    to write the core's OEM parameters.
 290  *
 291  */
 292 void scic_oem_parameters_get(
 293         struct scic_sds_controller *controller,
 294         union scic_oem_parameters *oem_parameters);
 295
 296
 297 #endif  /* _SCIC_SDS_USER_PARAMETERS_H_ */
 298