mirror of
https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stable.git
synced 2025-11-04 07:44:51 +10:00
f931551baf
Add a low-level IB driver for QLogic PCIe adapters. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
185 lines
6.8 KiB
C
185 lines
6.8 KiB
C
/*
|
|
* Copyright (c) 2006, 2007, 2008, 2009 QLogic Corporation. All rights reserved.
|
|
* Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
/* QSFP support common definitions, for ib_qib driver */
|
|
|
|
#define QSFP_DEV 0xA0
|
|
#define QSFP_PWR_LAG_MSEC 2000
|
|
|
|
/*
|
|
* Below are masks for various QSFP signals, for Port 1.
|
|
* Port2 equivalents are shifted by QSFP_GPIO_PORT2_SHIFT.
|
|
* _N means asserted low
|
|
*/
|
|
#define QSFP_GPIO_MOD_SEL_N (4)
|
|
#define QSFP_GPIO_MOD_PRS_N (8)
|
|
#define QSFP_GPIO_INT_N (0x10)
|
|
#define QSFP_GPIO_MOD_RST_N (0x20)
|
|
#define QSFP_GPIO_LP_MODE (0x40)
|
|
#define QSFP_GPIO_PORT2_SHIFT 5
|
|
|
|
#define QSFP_PAGESIZE 128
|
|
/* Defined fields that QLogic requires of qualified cables */
|
|
/* Byte 0 is Identifier, not checked */
|
|
/* Byte 1 is reserved "status MSB" */
|
|
/* Byte 2 is "status LSB" We only care that D2 "Flat Mem" is set. */
|
|
/*
|
|
* Rest of first 128 not used, although 127 is reserved for page select
|
|
* if module is not "Flat memory".
|
|
*/
|
|
/* Byte 128 is Identifier: must be 0x0c for QSFP, or 0x0d for QSFP+ */
|
|
#define QSFP_MOD_ID_OFFS 128
|
|
/*
|
|
* Byte 129 is "Extended Identifier". We only care about D7,D6: Power class
|
|
* 0:1.5W, 1:2.0W, 2:2.5W, 3:3.5W
|
|
*/
|
|
#define QSFP_MOD_PWR_OFFS 129
|
|
/* Byte 130 is Connector type. Not QLogic req'd */
|
|
/* Bytes 131..138 are Transceiver types, bit maps for various tech, none IB */
|
|
/* Byte 139 is encoding. code 0x01 is 8b10b. Not QLogic req'd */
|
|
/* byte 140 is nominal bit-rate, in units of 100Mbits/sec Not QLogic req'd */
|
|
/* Byte 141 is Extended Rate Select. Not QLogic req'd */
|
|
/* Bytes 142..145 are lengths for various fiber types. Not QLogic req'd */
|
|
/* Byte 146 is length for Copper. Units of 1 meter */
|
|
#define QSFP_MOD_LEN_OFFS 146
|
|
/*
|
|
* Byte 147 is Device technology. D0..3 not Qlogc req'd
|
|
* D4..7 select from 15 choices, translated by table:
|
|
*/
|
|
#define QSFP_MOD_TECH_OFFS 147
|
|
extern const char *const qib_qsfp_devtech[16];
|
|
/* Active Equalization includes fiber, copper full EQ, and copper near Eq */
|
|
#define QSFP_IS_ACTIVE(tech) ((0xA2FF >> ((tech) >> 4)) & 1)
|
|
/* Attenuation should be valid for copper other than full/near Eq */
|
|
#define QSFP_HAS_ATTEN(tech) ((0x4D00 >> ((tech) >> 4)) & 1)
|
|
/* Length is only valid if technology is "copper" */
|
|
#define QSFP_IS_CU(tech) ((0xED00 >> ((tech) >> 4)) & 1)
|
|
#define QSFP_TECH_1490 9
|
|
|
|
#define QSFP_OUI(oui) (((unsigned)oui[0] << 16) | ((unsigned)oui[1] << 8) | \
|
|
oui[2])
|
|
#define QSFP_OUI_AMPHENOL 0x415048
|
|
#define QSFP_OUI_FINISAR 0x009065
|
|
#define QSFP_OUI_GORE 0x002177
|
|
|
|
/* Bytes 148..163 are Vendor Name, Left-justified Blank-filled */
|
|
#define QSFP_VEND_OFFS 148
|
|
#define QSFP_VEND_LEN 16
|
|
/* Byte 164 is IB Extended tranceiver codes Bits D0..3 are SDR,DDR,QDR,EDR */
|
|
#define QSFP_IBXCV_OFFS 164
|
|
/* Bytes 165..167 are Vendor OUI number */
|
|
#define QSFP_VOUI_OFFS 165
|
|
#define QSFP_VOUI_LEN 3
|
|
/* Bytes 168..183 are Vendor Part Number, string */
|
|
#define QSFP_PN_OFFS 168
|
|
#define QSFP_PN_LEN 16
|
|
/* Bytes 184,185 are Vendor Rev. Left Justified, Blank-filled */
|
|
#define QSFP_REV_OFFS 184
|
|
#define QSFP_REV_LEN 2
|
|
/*
|
|
* Bytes 186,187 are Wavelength, if Optical. Not Qlogic req'd
|
|
* If copper, they are attenuation in dB:
|
|
* Byte 186 is at 2.5Gb/sec (SDR), Byte 187 at 5.0Gb/sec (DDR)
|
|
*/
|
|
#define QSFP_ATTEN_OFFS 186
|
|
#define QSFP_ATTEN_LEN 2
|
|
/* Bytes 188,189 are Wavelength tolerance, not QLogic req'd */
|
|
/* Byte 190 is Max Case Temp. Not QLogic req'd */
|
|
/* Byte 191 is LSB of sum of bytes 128..190. Not QLogic req'd */
|
|
#define QSFP_CC_OFFS 191
|
|
/* Bytes 192..195 are Options implemented in qsfp. Not Qlogic req'd */
|
|
/* Bytes 196..211 are Serial Number, String */
|
|
#define QSFP_SN_OFFS 196
|
|
#define QSFP_SN_LEN 16
|
|
/* Bytes 212..219 are date-code YYMMDD (MM==1 for Jan) */
|
|
#define QSFP_DATE_OFFS 212
|
|
#define QSFP_DATE_LEN 6
|
|
/* Bytes 218,219 are optional lot-code, string */
|
|
#define QSFP_LOT_OFFS 218
|
|
#define QSFP_LOT_LEN 2
|
|
/* Bytes 220, 221 indicate monitoring options, Not QLogic req'd */
|
|
/* Byte 223 is LSB of sum of bytes 192..222 */
|
|
#define QSFP_CC_EXT_OFFS 223
|
|
|
|
/*
|
|
* struct qib_qsfp_data encapsulates state of QSFP device for one port.
|
|
* it will be part of port-chip-specific data if a board supports QSFP.
|
|
*
|
|
* Since multiple board-types use QSFP, and their pport_data structs
|
|
* differ (in the chip-specific section), we need a pointer to its head.
|
|
*
|
|
* Avoiding premature optimization, we will have one work_struct per port,
|
|
* and let the (increasingly inaccurately named) eep_lock arbitrate
|
|
* access to common resources.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Hold the parts of the onboard EEPROM that we care about, so we aren't
|
|
* coonstantly bit-boffing
|
|
*/
|
|
struct qib_qsfp_cache {
|
|
u8 id; /* must be 0x0C or 0x0D; 0 indicates invalid EEPROM read */
|
|
u8 pwr; /* in D6,7 */
|
|
u8 len; /* in meters, Cu only */
|
|
u8 tech;
|
|
char vendor[QSFP_VEND_LEN];
|
|
u8 xt_xcv; /* Ext. tranceiver codes, 4 lsbs are IB speed supported */
|
|
u8 oui[QSFP_VOUI_LEN];
|
|
u8 partnum[QSFP_PN_LEN];
|
|
u8 rev[QSFP_REV_LEN];
|
|
u8 atten[QSFP_ATTEN_LEN];
|
|
u8 cks1; /* Checksum of bytes 128..190 */
|
|
u8 serial[QSFP_SN_LEN];
|
|
u8 date[QSFP_DATE_LEN];
|
|
u8 lot[QSFP_LOT_LEN];
|
|
u8 cks2; /* Checsum of bytes 192..222 */
|
|
};
|
|
|
|
#define QSFP_PWR(pbyte) (((pbyte) >> 6) & 3)
|
|
#define QSFP_ATTEN_SDR(attenarray) (attenarray[0])
|
|
#define QSFP_ATTEN_DDR(attenarray) (attenarray[1])
|
|
|
|
struct qib_qsfp_data {
|
|
/* Helps to find our way */
|
|
struct qib_pportdata *ppd;
|
|
struct work_struct work;
|
|
struct qib_qsfp_cache cache;
|
|
u64 t_insert;
|
|
};
|
|
|
|
extern int qib_refresh_qsfp_cache(struct qib_pportdata *ppd,
|
|
struct qib_qsfp_cache *cp);
|
|
extern void qib_qsfp_init(struct qib_qsfp_data *qd,
|
|
void (*fevent)(struct work_struct *));
|
|
extern void qib_qsfp_deinit(struct qib_qsfp_data *qd);
|