/*
* This file is part of the Chelsio FCoE driver for Linux.
*
* Copyright (c) 2008-2012 Chelsio Communications, 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.
*/
#include <linux/delay.h>
#include <linux/jiffies.h>
#include <linux/string.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_transport_fc.h>
#include "csio_hw.h"
#include "csio_lnode.h"
#include "csio_rnode.h"
#include "csio_mb.h"
#include "csio_wr.h"
#define csio_mb_is_host_owner(__owner) ((__owner) == CSIO_MBOWNER_PL)
/* MB Command/Response Helpers */
/*
* csio_mb_fw_retval - FW return value from a mailbox response.
* @mbp: Mailbox structure
*
*/
enum fw_retval
csio_mb_fw_retval(struct csio_mb *mbp)
{
struct fw_cmd_hdr *hdr;
hdr = (struct fw_cmd_hdr *)(mbp->mb);
return FW_CMD_RETVAL_GET(ntohl(hdr->lo));
}
/*
* csio_mb_hello - FW HELLO command helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @m_mbox: Master mailbox number, if any.
* @a_mbox: Mailbox number for asycn notifications.
* @master: Device mastership.
* @cbfn: Callback, if any.
*
*/
void
csio_mb_hello(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
uint32_t m_mbox, uint32_t a_mbox, enum csio_dev_master master,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_hello_cmd *cmdp = (struct fw_hello_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, tmo, hw, cbfn, 1);
cmdp->op_to_write = htonl(FW_CMD_OP(FW_HELLO_CMD) |
FW_CMD_REQUEST | FW_CMD_WRITE);
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->err_to_clearinit = htonl(
FW_HELLO_CMD_MASTERDIS(master == CSIO_MASTER_CANT) |
FW_HELLO_CMD_MASTERFORCE(master == CSIO_MASTER_MUST) |
FW_HELLO_CMD_MBMASTER(master == CSIO_MASTER_MUST ?
m_mbox : FW_HELLO_CMD_MBMASTER_MASK) |
FW_HELLO_CMD_MBASYNCNOT(a_mbox) |
FW_HELLO_CMD_STAGE(fw_hello_cmd_stage_os) |
FW_HELLO_CMD_CLEARINIT);
}
/*
* csio_mb_process_hello_rsp - FW HELLO response processing helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @retval: Mailbox return value from Firmware
* @state: State that the function is in.
* @mpfn: Master pfn
*
*/
void
csio_mb_process_hello_rsp(struct csio_hw *hw, struct csio_mb *mbp,
enum fw_retval *retval, enum csio_dev_state *state,
uint8_t *mpfn)
{
struct fw_hello_cmd *rsp = (struct fw_hello_cmd *)(mbp->mb);
uint32_t value;
*retval = FW_CMD_RETVAL_GET(ntohl(rsp->retval_len16));
if (*retval == FW_SUCCESS) {
hw->fwrev = ntohl(rsp->fwrev);
value = ntohl(rsp->err_to_clearinit);
*mpfn = FW_HELLO_CMD_MBMASTER_GET(value);
if (value & FW_HELLO_CMD_INIT)
*state = CSIO_DEV_STATE_INIT;
else if (value & FW_HELLO_CMD_ERR)
*state = CSIO_DEV_STATE_ERR;
else
*state = CSIO_DEV_STATE_UNINIT;
}
}
/*
* csio_mb_bye - FW BYE command helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @cbfn: Callback, if any.
*
*/
void
csio_mb_bye(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_bye_cmd *cmdp = (struct fw_bye_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, tmo, hw, cbfn, 1);
cmdp->op_to_write = htonl(FW_CMD_OP(FW_BYE_CMD) |
FW_CMD_REQUEST | FW_CMD_WRITE);
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
}
/*
* csio_mb_reset - FW RESET command helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @reset: Type of reset.
* @cbfn: Callback, if any.
*
*/
void
csio_mb_reset(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
int reset, int halt,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_reset_cmd *cmdp = (struct fw_reset_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, tmo, hw, cbfn, 1);
cmdp->op_to_write = htonl(FW_CMD_OP(FW_RESET_CMD) |
FW_CMD_REQUEST | FW_CMD_WRITE);
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->val = htonl(reset);
cmdp->halt_pkd = htonl(halt);
}
/*
* csio_mb_params - FW PARAMS command helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @tmo: Command timeout.
* @pf: PF number.
* @vf: VF number.
* @nparams: Number of parameters
* @params: Parameter mnemonic array.
* @val: Parameter value array.
* @wr: Write/Read PARAMS.
* @cbfn: Callback, if any.
*
*/
void
csio_mb_params(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
unsigned int pf, unsigned int vf, unsigned int nparams,
const u32 *params, u32 *val, bool wr,
void (*cbfn)(struct csio_hw *, struct csio_mb *))
{
uint32_t i;
uint32_t temp_params = 0, temp_val = 0;
struct fw_params_cmd *cmdp = (struct fw_params_cmd *)(mbp->mb);
__be32 *p = &cmdp->param[0].mnem;
CSIO_INIT_MBP(mbp, cmdp, tmo, hw, cbfn, 1);
cmdp->op_to_vfn = htonl(FW_CMD_OP(FW_PARAMS_CMD) |
FW_CMD_REQUEST |
(wr ? FW_CMD_WRITE : FW_CMD_READ) |
FW_PARAMS_CMD_PFN(pf) |
FW_PARAMS_CMD_VFN(vf));
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
/* Write Params */
if (wr) {
while (nparams--) {
temp_params = *params++;
temp_val = *val++;
*p++ = htonl(temp_params);
*p++ = htonl(temp_val);
}
} else {
for (i = 0; i < nparams; i++, p += 2) {
temp_params = *params++;
*p = htonl(temp_params);
}
}
}
/*
* csio_mb_process_read_params_rsp - FW PARAMS response processing helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @retval: Mailbox return value from Firmware
* @nparams: Number of parameters
* @val: Parameter value array.
*
*/
void
csio_mb_process_read_params_rsp(struct csio_hw *hw, struct csio_mb *mbp,
enum fw_retval *retval, unsigned int nparams,
u32 *val)
{
struct fw_params_cmd *rsp = (struct fw_params_cmd *)(mbp->mb);
uint32_t i;
__be32 *p = &rsp->param[0].val;
*retval = FW_CMD_RETVAL_GET(ntohl(rsp->retval_len16));
if (*retval == FW_SUCCESS)
for (i = 0; i < nparams; i++, p += 2)
*val++ = ntohl(*p);
}
/*
* csio_mb_ldst - FW LDST command
* @hw: The HW structure
* @mbp: Mailbox structure
* @tmo: timeout
* @reg: register
*
*/
void
csio_mb_ldst(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo, int reg)
{
struct fw_ldst_cmd *ldst_cmd = (struct fw_ldst_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, ldst_cmd, tmo, hw, NULL, 1);
/*
* Construct and send the Firmware LDST Command to retrieve the
* specified PCI-E Configuration Space register.
*/
ldst_cmd->op_to_addrspace =
htonl(FW_CMD_OP(FW_LDST_CMD) |
FW_CMD_REQUEST |
FW_CMD_READ |
FW_LDST_CMD_ADDRSPACE(FW_LDST_ADDRSPC_FUNC_PCIE));
ldst_cmd->cycles_to_len16 = htonl(FW_LEN16(struct fw_ldst_cmd));
ldst_cmd->u.pcie.select_naccess = FW_LDST_CMD_NACCESS(1);
ldst_cmd->u.pcie.ctrl_to_fn =
(FW_LDST_CMD_LC | FW_LDST_CMD_FN(hw->pfn));
ldst_cmd->u.pcie.r = (uint8_t)reg;
}
/*
*
* csio_mb_caps_config - FW Read/Write Capabilities command helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @wr: Write if 1, Read if 0
* @init: Turn on initiator mode.
* @tgt: Turn on target mode.
* @cofld: If 1, Control Offload for FCoE
* @cbfn: Callback, if any.
*
* This helper assumes that cmdp has MB payload from a previous CAPS
* read command.
*/
void
csio_mb_caps_config(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
bool wr, bool init, bool tgt, bool cofld,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_caps_config_cmd *cmdp =
(struct fw_caps_config_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, tmo, hw, cbfn, wr ? 0 : 1);
cmdp->op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
FW_CMD_REQUEST |
(wr ? FW_CMD_WRITE : FW_CMD_READ));
cmdp->cfvalid_to_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
/* Read config */
if (!wr)
return;
/* Write config */
cmdp->fcoecaps = 0;
if (cofld)
cmdp->fcoecaps |= htons(FW_CAPS_CONFIG_FCOE_CTRL_OFLD);
if (init)
cmdp->fcoecaps |= htons(FW_CAPS_CONFIG_FCOE_INITIATOR);
if (tgt)
cmdp->fcoecaps |= htons(FW_CAPS_CONFIG_FCOE_TARGET);
}
#define CSIO_ADVERT_MASK (FW_PORT_CAP_SPEED_100M | FW_PORT_CAP_SPEED_1G |\
FW_PORT_CAP_SPEED_10G | FW_PORT_CAP_ANEG)
/*
* csio_mb_port- FW PORT command helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @tmo: COmmand timeout
* @portid: Port ID to get/set info
* @wr: Write/Read PORT information.
* @fc: Flow control
* @caps: Port capabilites to set.
* @cbfn: Callback, if any.
*
*/
void
csio_mb_port(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
uint8_t portid, bool wr, uint32_t fc, uint16_t caps,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_port_cmd *cmdp = (struct fw_port_cmd *)(mbp->mb);
unsigned int lfc = 0, mdi = FW_PORT_MDI(FW_PORT_MDI_AUTO);
CSIO_INIT_MBP(mbp, cmdp, tmo, hw, cbfn, 1);
cmdp->op_to_portid = htonl(FW_CMD_OP(FW_PORT_CMD) |
FW_CMD_REQUEST |
(wr ? FW_CMD_EXEC : FW_CMD_READ) |
FW_PORT_CMD_PORTID(portid));
if (!wr) {
cmdp->action_to_len16 = htonl(
FW_PORT_CMD_ACTION(FW_PORT_ACTION_GET_PORT_INFO) |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
return;
}
/* Set port */
cmdp->action_to_len16 = htonl(
FW_PORT_CMD_ACTION(FW_PORT_ACTION_L1_CFG) |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
if (fc & PAUSE_RX)
lfc |= FW_PORT_CAP_FC_RX;
if (fc & PAUSE_TX)
lfc |= FW_PORT_CAP_FC_TX;
if (!(caps & FW_PORT_CAP_ANEG))
cmdp->u.l1cfg.rcap = htonl((caps & CSIO_ADVERT_MASK) | lfc);
else
cmdp->u.l1cfg.rcap = htonl((caps & CSIO_ADVERT_MASK) |
lfc | mdi);
}
/*
* csio_mb_process_read_port_rsp - FW PORT command response processing helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @retval: Mailbox return value from Firmware
* @caps: port capabilities
*
*/
void
csio_mb_process_read_port_rsp(struct csio_hw *hw, struct csio_mb *mbp,
enum fw_retval *retval, uint16_t *caps)
{
struct fw_port_cmd *rsp = (struct fw_port_cmd *)(mbp->mb);
*retval = FW_CMD_RETVAL_GET(ntohl(rsp->action_to_len16));
if (*retval == FW_SUCCESS)
*caps = ntohs(rsp->u.info.pcap);
}
/*
* csio_mb_initialize - FW INITIALIZE command helper
* @hw: The HW structure
* @mbp: Mailbox structure
* @tmo: COmmand timeout
* @cbfn: Callback, if any.
*
*/
void
csio_mb_initialize(struct csio_hw *hw, struct csio_mb *mbp, uint32_t tmo,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_initialize_cmd *cmdp = (struct fw_initialize_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, tmo, hw, cbfn, 1);
cmdp->op_to_write = htonl(FW_CMD_OP(FW_INITIALIZE_CMD) |
FW_CMD_REQUEST | FW_CMD_WRITE);
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
}
/*
* csio_mb_iq_alloc - Initializes the mailbox to allocate an
* Ingress DMA queue in the firmware.
*
* @hw: The hw structure
* @mbp: Mailbox structure to initialize
* @priv: Private object
* @mb_tmo: Mailbox time-out period (in ms).
* @iq_params: Ingress queue params needed for allocation.
* @cbfn: The call-back function
*
*
*/
static void
csio_mb_iq_alloc(struct csio_hw *hw, struct csio_mb *mbp, void *priv,
uint32_t mb_tmo, struct csio_iq_params *iq_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_iq_cmd *cmdp = (struct fw_iq_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, priv, cbfn, 1);
cmdp->op_to_vfn = htonl(FW_CMD_OP(FW_IQ_CMD) |
FW_CMD_REQUEST | FW_CMD_EXEC |
FW_IQ_CMD_PFN(iq_params->pfn) |
FW_IQ_CMD_VFN(iq_params->vfn));
cmdp->alloc_to_len16 = htonl(FW_IQ_CMD_ALLOC |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->type_to_iqandstindex = htonl(
FW_IQ_CMD_VIID(iq_params->viid) |
FW_IQ_CMD_TYPE(iq_params->type) |
FW_IQ_CMD_IQASYNCH(iq_params->iqasynch));
cmdp->fl0size = htons(iq_params->fl0size);
cmdp->fl0size = htons(iq_params->fl1size);
} /* csio_mb_iq_alloc */
/*
* csio_mb_iq_write - Initializes the mailbox for writing into an
* Ingress DMA Queue.
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @priv: Private object
* @mb_tmo: Mailbox time-out period (in ms).
* @cascaded_req: TRUE - if this request is cascased with iq-alloc request.
* @iq_params: Ingress queue params needed for writing.
* @cbfn: The call-back function
*
* NOTE: We OR relevant bits with cmdp->XXX, instead of just equating,
* because this IQ write request can be cascaded with a previous
* IQ alloc request, and we dont want to over-write the bits set by
* that request. This logic will work even in a non-cascaded case, since the
* cmdp structure is zeroed out by CSIO_INIT_MBP.
*/
static void
csio_mb_iq_write(struct csio_hw *hw, struct csio_mb *mbp, void *priv,
uint32_t mb_tmo, bool cascaded_req,
struct csio_iq_params *iq_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_iq_cmd *cmdp = (struct fw_iq_cmd *)(mbp->mb);
uint32_t iq_start_stop = (iq_params->iq_start) ?
FW_IQ_CMD_IQSTART(1) :
FW_IQ_CMD_IQSTOP(1);
/*
* If this IQ write is cascaded with IQ alloc request, do not
* re-initialize with 0's.
*
*/
if (!cascaded_req)
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, priv, cbfn, 1);
cmdp->op_to_vfn |= htonl(FW_CMD_OP(FW_IQ_CMD) |
FW_CMD_REQUEST | FW_CMD_WRITE |
FW_IQ_CMD_PFN(iq_params->pfn) |
FW_IQ_CMD_VFN(iq_params->vfn));
cmdp->alloc_to_len16 |= htonl(iq_start_stop |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->iqid |= htons(iq_params->iqid);
cmdp->fl0id |= htons(iq_params->fl0id);
cmdp->fl1id |= htons(iq_params->fl1id);
cmdp->type_to_iqandstindex |= htonl(
FW_IQ_CMD_IQANDST(iq_params->iqandst) |
FW_IQ_CMD_IQANUS(iq_params->iqanus) |
FW_IQ_CMD_IQANUD(iq_params->iqanud) |
FW_IQ_CMD_IQANDSTINDEX(iq_params->iqandstindex));
cmdp->iqdroprss_to_iqesize |= htons(
FW_IQ_CMD_IQPCIECH(iq_params->iqpciech) |
FW_IQ_CMD_IQDCAEN(iq_params->iqdcaen) |
FW_IQ_CMD_IQDCACPU(iq_params->iqdcacpu) |
FW_IQ_CMD_IQINTCNTTHRESH(iq_params->iqintcntthresh) |
FW_IQ_CMD_IQCPRIO(iq_params->iqcprio) |
FW_IQ_CMD_IQESIZE(iq_params->iqesize));
cmdp->iqsize |= htons(iq_params->iqsize);
cmdp->iqaddr |= cpu_to_be64(iq_params->iqaddr);
if (iq_params->type == 0) {
cmdp->iqns_to_fl0congen |= htonl(
FW_IQ_CMD_IQFLINTIQHSEN(iq_params->iqflintiqhsen)|
FW_IQ_CMD_IQFLINTCONGEN(iq_params->iqflintcongen));
}
if (iq_params->fl0size && iq_params->fl0addr &&
(iq_params->fl0id != 0xFFFF)) {
cmdp->iqns_to_fl0congen |= htonl(
FW_IQ_CMD_FL0HOSTFCMODE(iq_params->fl0hostfcmode)|
FW_IQ_CMD_FL0CPRIO(iq_params->fl0cprio) |
FW_IQ_CMD_FL0PADEN(iq_params->fl0paden) |
FW_IQ_CMD_FL0PACKEN(iq_params->fl0packen));
cmdp->fl0dcaen_to_fl0cidxfthresh |= htons(
FW_IQ_CMD_FL0DCAEN(iq_params->fl0dcaen) |
FW_IQ_CMD_FL0DCACPU(iq_params->fl0dcacpu) |
FW_IQ_CMD_FL0FBMIN(iq_params->fl0fbmin) |
FW_IQ_CMD_FL0FBMAX(iq_params->fl0fbmax) |
FW_IQ_CMD_FL0CIDXFTHRESH(iq_params->fl0cidxfthresh));
cmdp->fl0size |= htons(iq_params->fl0size);
cmdp->fl0addr |= cpu_to_be64(iq_params->fl0addr);
}
} /* csio_mb_iq_write */
/*
* csio_mb_iq_alloc_write - Initializes the mailbox for allocating an
* Ingress DMA Queue.
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @priv: Private data.
* @mb_tmo: Mailbox time-out period (in ms).
* @iq_params: Ingress queue params needed for allocation & writing.
* @cbfn: The call-back function
*
*
*/
void
csio_mb_iq_alloc_write(struct csio_hw *hw, struct csio_mb *mbp, void *priv,
uint32_t mb_tmo, struct csio_iq_params *iq_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
csio_mb_iq_alloc(hw, mbp, priv, mb_tmo, iq_params, cbfn);
csio_mb_iq_write(hw, mbp, priv, mb_tmo, true, iq_params, cbfn);
} /* csio_mb_iq_alloc_write */
/*
* csio_mb_iq_alloc_write_rsp - Process the allocation & writing
* of ingress DMA queue mailbox's response.
*
* @hw: The HW structure.
* @mbp: Mailbox structure to initialize.
* @retval: Firmware return value.
* @iq_params: Ingress queue parameters, after allocation and write.
*
*/
void
csio_mb_iq_alloc_write_rsp(struct csio_hw *hw, struct csio_mb *mbp,
enum fw_retval *ret_val,
struct csio_iq_params *iq_params)
{
struct fw_iq_cmd *rsp = (struct fw_iq_cmd *)(mbp->mb);
*ret_val = FW_CMD_RETVAL_GET(ntohl(rsp->alloc_to_len16));
if (*ret_val == FW_SUCCESS) {
iq_params->physiqid = ntohs(rsp->physiqid);
iq_params->iqid = ntohs(rsp->iqid);
iq_params->fl0id = ntohs(rsp->fl0id);
iq_params->fl1id = ntohs(rsp->fl1id);
} else {
iq_params->physiqid = iq_params->iqid =
iq_params->fl0id = iq_params->fl1id = 0;
}
} /* csio_mb_iq_alloc_write_rsp */
/*
* csio_mb_iq_free - Initializes the mailbox for freeing a
* specified Ingress DMA Queue.
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @priv: Private data
* @mb_tmo: Mailbox time-out period (in ms).
* @iq_params: Parameters of ingress queue, that is to be freed.
* @cbfn: The call-back function
*
*
*/
void
csio_mb_iq_free(struct csio_hw *hw, struct csio_mb *mbp, void *priv,
uint32_t mb_tmo, struct csio_iq_params *iq_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_iq_cmd *cmdp = (struct fw_iq_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, priv, cbfn, 1);
cmdp->op_to_vfn = htonl(FW_CMD_OP(FW_IQ_CMD) |
FW_CMD_REQUEST | FW_CMD_EXEC |
FW_IQ_CMD_PFN(iq_params->pfn) |
FW_IQ_CMD_VFN(iq_params->vfn));
cmdp->alloc_to_len16 = htonl(FW_IQ_CMD_FREE |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->type_to_iqandstindex = htonl(FW_IQ_CMD_TYPE(iq_params->type));
cmdp->iqid = htons(iq_params->iqid);
cmdp->fl0id = htons(iq_params->fl0id);
cmdp->fl1id = htons(iq_params->fl1id);
} /* csio_mb_iq_free */
/*
* csio_mb_eq_ofld_alloc - Initializes the mailbox for allocating
* an offload-egress queue.
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @priv: Private data
* @mb_tmo: Mailbox time-out period (in ms).
* @eq_ofld_params: (Offload) Egress queue parameters.
* @cbfn: The call-back function
*
*
*/
static void
csio_mb_eq_ofld_alloc(struct csio_hw *hw, struct csio_mb *mbp, void *priv,
uint32_t mb_tmo, struct csio_eq_params *eq_ofld_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_eq_ofld_cmd *cmdp = (struct fw_eq_ofld_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, priv, cbfn, 1);
cmdp->op_to_vfn = htonl(FW_CMD_OP(FW_EQ_OFLD_CMD) |
FW_CMD_REQUEST | FW_CMD_EXEC |
FW_EQ_OFLD_CMD_PFN(eq_ofld_params->pfn) |
FW_EQ_OFLD_CMD_VFN(eq_ofld_params->vfn));
cmdp->alloc_to_len16 = htonl(FW_EQ_OFLD_CMD_ALLOC |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
} /* csio_mb_eq_ofld_alloc */
/*
* csio_mb_eq_ofld_write - Initializes the mailbox for writing
* an alloacted offload-egress queue.
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @priv: Private data
* @mb_tmo: Mailbox time-out period (in ms).
* @cascaded_req: TRUE - if this request is cascased with Eq-alloc request.
* @eq_ofld_params: (Offload) Egress queue parameters.
* @cbfn: The call-back function
*
*
* NOTE: We OR relevant bits with cmdp->XXX, instead of just equating,
* because this EQ write request can be cascaded with a previous
* EQ alloc request, and we dont want to over-write the bits set by
* that request. This logic will work even in a non-cascaded case, since the
* cmdp structure is zeroed out by CSIO_INIT_MBP.
*/
static void
csio_mb_eq_ofld_write(struct csio_hw *hw, struct csio_mb *mbp, void *priv,
uint32_t mb_tmo, bool cascaded_req,
struct csio_eq_params *eq_ofld_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_eq_ofld_cmd *cmdp = (struct fw_eq_ofld_cmd *)(mbp->mb);
uint32_t eq_start_stop = (eq_ofld_params->eqstart) ?
FW_EQ_OFLD_CMD_EQSTART : FW_EQ_OFLD_CMD_EQSTOP;
/*
* If this EQ write is cascaded with EQ alloc request, do not
* re-initialize with 0's.
*
*/
if (!cascaded_req)
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, priv, cbfn, 1);
cmdp->op_to_vfn |= htonl(FW_CMD_OP(FW_EQ_OFLD_CMD) |
FW_CMD_REQUEST | FW_CMD_WRITE |
FW_EQ_OFLD_CMD_PFN(eq_ofld_params->pfn) |
FW_EQ_OFLD_CMD_VFN(eq_ofld_params->vfn));
cmdp->alloc_to_len16 |= htonl(eq_start_stop |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->eqid_pkd |= htonl(FW_EQ_OFLD_CMD_EQID(eq_ofld_params->eqid));
cmdp->fetchszm_to_iqid |= htonl(
FW_EQ_OFLD_CMD_HOSTFCMODE(eq_ofld_params->hostfcmode) |
FW_EQ_OFLD_CMD_CPRIO(eq_ofld_params->cprio) |
FW_EQ_OFLD_CMD_PCIECHN(eq_ofld_params->pciechn) |
FW_EQ_OFLD_CMD_IQID(eq_ofld_params->iqid));
cmdp->dcaen_to_eqsize |= htonl(
FW_EQ_OFLD_CMD_DCAEN(eq_ofld_params->dcaen) |
FW_EQ_OFLD_CMD_DCACPU(eq_ofld_params->dcacpu) |
FW_EQ_OFLD_CMD_FBMIN(eq_ofld_params->fbmin) |
FW_EQ_OFLD_CMD_FBMAX(eq_ofld_params->fbmax) |
FW_EQ_OFLD_CMD_CIDXFTHRESHO(eq_ofld_params->cidxfthresho) |
FW_EQ_OFLD_CMD_CIDXFTHRESH(eq_ofld_params->cidxfthresh) |
FW_EQ_OFLD_CMD_EQSIZE(eq_ofld_params->eqsize));
cmdp->eqaddr |= cpu_to_be64(eq_ofld_params->eqaddr);
} /* csio_mb_eq_ofld_write */
/*
* csio_mb_eq_ofld_alloc_write - Initializes the mailbox for allocation
* writing into an Engress DMA Queue.
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @priv: Private data.
* @mb_tmo: Mailbox time-out period (in ms).
* @eq_ofld_params: (Offload) Egress queue parameters.
* @cbfn: The call-back function
*
*
*/
void
csio_mb_eq_ofld_alloc_write(struct csio_hw *hw, struct csio_mb *mbp,
void *priv, uint32_t mb_tmo,
struct csio_eq_params *eq_ofld_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
csio_mb_eq_ofld_alloc(hw, mbp, priv, mb_tmo, eq_ofld_params, cbfn);
csio_mb_eq_ofld_write(hw, mbp, priv, mb_tmo, true,
eq_ofld_params, cbfn);
} /* csio_mb_eq_ofld_alloc_write */
/*
* csio_mb_eq_ofld_alloc_write_rsp - Process the allocation
* & write egress DMA queue mailbox's response.
*
* @hw: The HW structure.
* @mbp: Mailbox structure to initialize.
* @retval: Firmware return value.
* @eq_ofld_params: (Offload) Egress queue parameters.
*
*/
void
csio_mb_eq_ofld_alloc_write_rsp(struct csio_hw *hw,
struct csio_mb *mbp, enum fw_retval *ret_val,
struct csio_eq_params *eq_ofld_params)
{
struct fw_eq_ofld_cmd *rsp = (struct fw_eq_ofld_cmd *)(mbp->mb);
*ret_val = FW_CMD_RETVAL_GET(ntohl(rsp->alloc_to_len16));
if (*ret_val == FW_SUCCESS) {
eq_ofld_params->eqid = FW_EQ_OFLD_CMD_EQID_GET(
ntohl(rsp->eqid_pkd));
eq_ofld_params->physeqid = FW_EQ_OFLD_CMD_PHYSEQID_GET(
ntohl(rsp->physeqid_pkd));
} else
eq_ofld_params->eqid = 0;
} /* csio_mb_eq_ofld_alloc_write_rsp */
/*
* csio_mb_eq_ofld_free - Initializes the mailbox for freeing a
* specified Engress DMA Queue.
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @priv: Private data area.
* @mb_tmo: Mailbox time-out period (in ms).
* @eq_ofld_params: (Offload) Egress queue parameters, that is to be freed.
* @cbfn: The call-back function
*
*
*/
void
csio_mb_eq_ofld_free(struct csio_hw *hw, struct csio_mb *mbp, void *priv,
uint32_t mb_tmo, struct csio_eq_params *eq_ofld_params,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_eq_ofld_cmd *cmdp = (struct fw_eq_ofld_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, priv, cbfn, 1);
cmdp->op_to_vfn = htonl(FW_CMD_OP(FW_EQ_OFLD_CMD) |
FW_CMD_REQUEST | FW_CMD_EXEC |
FW_EQ_OFLD_CMD_PFN(eq_ofld_params->pfn) |
FW_EQ_OFLD_CMD_VFN(eq_ofld_params->vfn));
cmdp->alloc_to_len16 = htonl(FW_EQ_OFLD_CMD_FREE |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->eqid_pkd = htonl(FW_EQ_OFLD_CMD_EQID(eq_ofld_params->eqid));
} /* csio_mb_eq_ofld_free */
/*
* csio_write_fcoe_link_cond_init_mb - Initialize Mailbox to write FCoE link
* condition.
*
* @ln: The Lnode structure
* @mbp: Mailbox structure to initialize
* @mb_tmo: Mailbox time-out period (in ms).
* @cbfn: The call back function.
*
*
*/
void
csio_write_fcoe_link_cond_init_mb(struct csio_lnode *ln, struct csio_mb *mbp,
uint32_t mb_tmo, uint8_t port_id, uint32_t sub_opcode,
uint8_t cos, bool link_status, uint32_t fcfi,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_fcoe_link_cmd *cmdp =
(struct fw_fcoe_link_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, ln, cbfn, 1);
cmdp->op_to_portid = htonl((
FW_CMD_OP(FW_FCOE_LINK_CMD) |
FW_CMD_REQUEST |
FW_CMD_WRITE |
FW_FCOE_LINK_CMD_PORTID(port_id)));
cmdp->sub_opcode_fcfi = htonl(
FW_FCOE_LINK_CMD_SUB_OPCODE(sub_opcode) |
FW_FCOE_LINK_CMD_FCFI(fcfi));
cmdp->lstatus = link_status;
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
} /* csio_write_fcoe_link_cond_init_mb */
/*
* csio_fcoe_read_res_info_init_mb - Initializes the mailbox for reading FCoE
* resource information(FW_GET_RES_INFO_CMD).
*
* @hw: The HW structure
* @mbp: Mailbox structure to initialize
* @mb_tmo: Mailbox time-out period (in ms).
* @cbfn: The call-back function
*
*
*/
void
csio_fcoe_read_res_info_init_mb(struct csio_hw *hw, struct csio_mb *mbp,
uint32_t mb_tmo,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_fcoe_res_info_cmd *cmdp =
(struct fw_fcoe_res_info_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, hw, cbfn, 1);
cmdp->op_to_read = htonl((FW_CMD_OP(FW_FCOE_RES_INFO_CMD) |
FW_CMD_REQUEST |
FW_CMD_READ));
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
} /* csio_fcoe_read_res_info_init_mb */
/*
* csio_fcoe_vnp_alloc_init_mb - Initializes the mailbox for allocating VNP
* in the firmware (FW_FCOE_VNP_CMD).
*
* @ln: The Lnode structure.
* @mbp: Mailbox structure to initialize.
* @mb_tmo: Mailbox time-out period (in ms).
* @fcfi: FCF Index.
* @vnpi: vnpi
* @iqid: iqid
* @vnport_wwnn: vnport WWNN
* @vnport_wwpn: vnport WWPN
* @cbfn: The call-back function.
*
*
*/
void
csio_fcoe_vnp_alloc_init_mb(struct csio_lnode *ln, struct csio_mb *mbp,
uint32_t mb_tmo, uint32_t fcfi, uint32_t vnpi, uint16_t iqid,
uint8_t vnport_wwnn[8], uint8_t vnport_wwpn[8],
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_fcoe_vnp_cmd *cmdp =
(struct fw_fcoe_vnp_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, ln, cbfn, 1);
cmdp->op_to_fcfi = htonl((FW_CMD_OP(FW_FCOE_VNP_CMD) |
FW_CMD_REQUEST |
FW_CMD_EXEC |
FW_FCOE_VNP_CMD_FCFI(fcfi)));
cmdp->alloc_to_len16 = htonl(FW_FCOE_VNP_CMD_ALLOC |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->gen_wwn_to_vnpi = htonl(FW_FCOE_VNP_CMD_VNPI(vnpi));
cmdp->iqid = htons(iqid);
if (!wwn_to_u64(vnport_wwnn) && !wwn_to_u64(vnport_wwpn))
cmdp->gen_wwn_to_vnpi |= htonl(FW_FCOE_VNP_CMD_GEN_WWN);
if (vnport_wwnn)
memcpy(cmdp->vnport_wwnn, vnport_wwnn, 8);
if (vnport_wwpn)
memcpy(cmdp->vnport_wwpn, vnport_wwpn, 8);
} /* csio_fcoe_vnp_alloc_init_mb */
/*
* csio_fcoe_vnp_read_init_mb - Prepares VNP read cmd.
* @ln: The Lnode structure.
* @mbp: Mailbox structure to initialize.
* @mb_tmo: Mailbox time-out period (in ms).
* @fcfi: FCF Index.
* @vnpi: vnpi
* @cbfn: The call-back handler.
*/
void
csio_fcoe_vnp_read_init_mb(struct csio_lnode *ln, struct csio_mb *mbp,
uint32_t mb_tmo, uint32_t fcfi, uint32_t vnpi,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_fcoe_vnp_cmd *cmdp =
(struct fw_fcoe_vnp_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, ln, cbfn, 1);
cmdp->op_to_fcfi = htonl(FW_CMD_OP(FW_FCOE_VNP_CMD) |
FW_CMD_REQUEST |
FW_CMD_READ |
FW_FCOE_VNP_CMD_FCFI(fcfi));
cmdp->alloc_to_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->gen_wwn_to_vnpi = htonl(FW_FCOE_VNP_CMD_VNPI(vnpi));
}
/*
* csio_fcoe_vnp_free_init_mb - Initializes the mailbox for freeing an
* alloacted VNP in the firmware (FW_FCOE_VNP_CMD).
*
* @ln: The Lnode structure.
* @mbp: Mailbox structure to initialize.
* @mb_tmo: Mailbox time-out period (in ms).
* @fcfi: FCF flow id
* @vnpi: VNP flow id
* @cbfn: The call-back function.
* Return: None
*/
void
csio_fcoe_vnp_free_init_mb(struct csio_lnode *ln, struct csio_mb *mbp,
uint32_t mb_tmo, uint32_t fcfi, uint32_t vnpi,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_fcoe_vnp_cmd *cmdp =
(struct fw_fcoe_vnp_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, ln, cbfn, 1);
cmdp->op_to_fcfi = htonl(FW_CMD_OP(FW_FCOE_VNP_CMD) |
FW_CMD_REQUEST |
FW_CMD_EXEC |
FW_FCOE_VNP_CMD_FCFI(fcfi));
cmdp->alloc_to_len16 = htonl(FW_FCOE_VNP_CMD_FREE |
FW_CMD_LEN16(sizeof(*cmdp) / 16));
cmdp->gen_wwn_to_vnpi = htonl(FW_FCOE_VNP_CMD_VNPI(vnpi));
}
/*
* csio_fcoe_read_fcf_init_mb - Initializes the mailbox to read the
* FCF records.
*
* @ln: The Lnode structure
* @mbp: Mailbox structure to initialize
* @mb_tmo: Mailbox time-out period (in ms).
* @fcf_params: FC-Forwarder parameters.
* @cbfn: The call-back function
*
*
*/
void
csio_fcoe_read_fcf_init_mb(struct csio_lnode *ln, struct csio_mb *mbp,
uint32_t mb_tmo, uint32_t portid, uint32_t fcfi,
void (*cbfn) (struct csio_hw *, struct csio_mb *))
{
struct fw_fcoe_fcf_cmd *cmdp =
(struct fw_fcoe_fcf_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, ln, cbfn, 1);
cmdp->op_to_fcfi = htonl(FW_CMD_OP(FW_FCOE_FCF_CMD) |
FW_CMD_REQUEST |
FW_CMD_READ |
FW_FCOE_FCF_CMD_FCFI(fcfi));
cmdp->retval_len16 = htonl(FW_CMD_LEN16(sizeof(*cmdp) / 16));
} /* csio_fcoe_read_fcf_init_mb */
void
csio_fcoe_read_portparams_init_mb(struct csio_hw *hw, struct csio_mb *mbp,
uint32_t mb_tmo,
struct fw_fcoe_port_cmd_params *portparams,
void (*cbfn)(struct csio_hw *,
struct csio_mb *))
{
struct fw_fcoe_stats_cmd *cmdp = (struct fw_fcoe_stats_cmd *)(mbp->mb);
CSIO_INIT_MBP(mbp, cmdp, mb_tmo, hw, cbfn, 1);
mbp->mb_size = 64;
cmdp->op_to_flowid = htonl(FW_CMD_OP(FW_FCOE_STATS_CMD) |
FW_CMD_REQUEST | FW_CMD_READ);
cmdp->free_to_len16 = htonl(FW_CMD_LEN16(CSIO_MAX_MB_SIZE/16));
cmdp->u.ctl.nstats_port = FW_FCOE_STATS_CMD_NSTATS(portparams->nstats) |
FW_FCOE_STATS_CMD_PORT(portparams->portid);
cmdp->u.ctl.port_valid_ix = FW_FCOE_STATS_CMD_IX(portparams->idx) |
FW_FCOE_STATS_CMD_PORT_VALID;
} /* csio_fcoe_read_portparams_init_mb */
void
csio_mb_process_portparams_rsp(struct csio_hw *hw,
struct csio_mb *mbp,
enum fw_retval *retval,
struct fw_fcoe_port_cmd_params *portparams,
struct fw_fcoe_port_stats *portstats)
{
struct fw_fcoe_stats_cmd *rsp = (struct fw_fcoe_stats_cmd *)(mbp->mb);
struct fw_fcoe_port_stats stats;
uint8_t *src;
uint8_t *dst;
*retval = FW_CMD_RETVAL_GET(ntohl(rsp->free_to_len16));
memset(&stats, 0, sizeof(struct fw_fcoe_port_stats));
if (*retval == FW_SUCCESS) {
dst = (uint8_t *)(&stats) + ((portparams->idx - 1) * 8);
src = (uint8_t *)rsp + (CSIO_STATS_OFFSET * 8);
memcpy(dst, src, (portparams->nstats * 8));
if (portparams->idx == 1) {
/* Get the first 6 flits from the Mailbox */
portstats->tx_bcast_bytes = stats.tx_bcast_bytes;
portstats->tx_bcast_frames = stats.tx_bcast_frames;
portstats->tx_mcast_bytes = stats.tx_mcast_bytes;
portstats->tx_mcast_frames = stats.tx_mcast_frames;
portstats->tx_ucast_bytes = stats.tx_ucast_bytes;
portstats->tx_ucast_frames = stats.tx_ucast_frames;
}
if (portparams->idx == 7) {
/* Get the second 6 flits from the Mailbox */
portstats->tx_drop_frames = stats.tx_drop_frames;
portstats->tx_offload_bytes = stats.tx_offload_bytes;
portstats->tx_offload_frames = stats.tx_offload_frames;
#if 0
portstats->rx_pf_bytes = stats.rx_pf_bytes;
portstats->rx_pf_frames = stats.rx_pf_frames;
#endif
portstats->rx_bcast_bytes = stats.rx_bcast_bytes;
portstats->rx_bcast_frames = stats.rx_bcast_frames;
portstats->rx_mcast_bytes = stats.rx_mcast_bytes;
}
if (portparams->idx == 13) {
/* Get the last 4 flits from the Mailbox */
portstats->rx_mcast_frames = stats.rx_mcast_frames;
portstats->rx_ucast_bytes = stats.rx_ucast_bytes;
portstats->rx_ucast_frames = stats.rx_ucast_frames;
portstats->rx_err_frames = stats.rx_err_frames;
}
}
}
/* Entry points/APIs for MB module */
/*
* csio_mb_intr_enable - Enable Interrupts from mailboxes.
* @hw: The HW structure
*
* Enables CIM interrupt bit in appropriate INT_ENABLE registers.
*/
void
csio_mb_intr_enable(struct csio_hw *hw)
{
csio_wr_reg32(hw, MBMSGRDYINTEN(1), MYPF_REG(CIM_PF_HOST_INT_ENABLE));
csio_rd_reg32(hw, MYPF_REG(CIM_PF_HOST_INT_ENABLE));
}
/*
* csio_mb_intr_disable - Disable Interrupts from mailboxes.
* @hw: The HW structure
*
* Disable bit in HostInterruptEnable CIM register.
*/
void
csio_mb_intr_disable(struct csio_hw *hw)
{
csio_wr_reg32(hw, MBMSGRDYINTEN(0), MYPF_REG(CIM_PF_HOST_INT_ENABLE));
csio_rd_reg32(hw, MYPF_REG(CIM_PF_HOST_INT_ENABLE));
}
static void
csio_mb_dump_fw_dbg(struct csio_hw *hw, __be64 *cmd)
{
struct fw_debug_cmd *dbg = (struct fw_debug_cmd *)cmd;
if ((FW_DEBUG_CMD_TYPE_GET(ntohl(dbg->op_type))) == 1) {
csio_info(hw, "FW print message:\n");
csio_info(hw, "\tdebug->dprtstridx = %d\n",
ntohs(dbg->u.prt.dprtstridx));
csio_info(hw, "\tdebug->dprtstrparam0 = 0x%x\n",
ntohl(dbg->u.prt.dprtstrparam0));
csio_info(hw, "\tdebug->dprtstrparam1 = 0x%x\n",
ntohl(dbg->u.prt.dprtstrparam1));
csio_info(hw, "\tdebug->dprtstrparam2 = 0x%x\n",
ntohl(dbg->u.prt.dprtstrparam2));
csio_info(hw, "\tdebug->dprtstrparam3 = 0x%x\n",
ntohl(dbg->u.prt.dprtstrparam3));
} else {
/* This is a FW assertion */
csio_fatal(hw, "FW assertion at %.16s:%u, val0 %#x, val1 %#x\n",
dbg->u.assert.filename_0_7,
ntohl(dbg->u.assert.line),
ntohl(dbg->u.assert.x),
ntohl(dbg->u.assert.y));
}
}
static void
csio_mb_debug_cmd_handler(struct csio_hw *hw)
{
int i;
__be64 cmd[CSIO_MB_MAX_REGS];
uint32_t ctl_reg = PF_REG(hw->pfn, CIM_PF_MAILBOX_CTRL);
uint32_t data_reg = PF_REG(hw->pfn, CIM_PF_MAILBOX_DATA);
int size = sizeof(struct fw_debug_cmd);
/* Copy mailbox data */
for (i = 0; i < size; i += 8)
cmd[i / 8] = cpu_to_be64(csio_rd_reg64(hw, data_reg + i));
csio_mb_dump_fw_dbg(hw, cmd);
/* Notify FW of mailbox by setting owner as UP */
csio_wr_reg32(hw, MBMSGVALID | MBINTREQ | MBOWNER(CSIO_MBOWNER_FW),
ctl_reg);
csio_rd_reg32(hw, ctl_reg);
wmb();
}
/*
* csio_mb_issue - generic routine for issuing Mailbox commands.
* @hw: The HW structure
* @mbp: Mailbox command to issue
*
* Caller should hold hw lock across this call.
*/
int
csio_mb_issue(struct csio_hw *hw, struct csio_mb *mbp)
{
uint32_t owner, ctl;
int i;
uint32_t ii;
__be64 *cmd = mbp->mb;
__be64 hdr;
struct csio_mbm *mbm = &hw->mbm;
uint32_t ctl_reg = PF_REG(hw->pfn, CIM_PF_MAILBOX_CTRL);
uint32_t data_reg = PF_REG(hw->pfn, CIM_PF_MAILBOX_DATA);
int size = mbp->mb_size;
int rv = -EINVAL;
struct fw_cmd_hdr *fw_hdr;
/* Determine mode */
if (mbp->mb_cbfn == NULL) {
/* Need to issue/get results in the same context */
if (mbp->tmo < CSIO_MB_POLL_FREQ) {
csio_err(hw, "Invalid tmo: 0x%x\n", mbp->tmo);
goto error_out;
}
} else if (!csio_is_host_intr_enabled(hw) ||
!csio_is_hw_intr_enabled(hw)) {
csio_err(hw, "Cannot issue mailbox in interrupt mode 0x%x\n",
*((uint8_t *)mbp->mb));
goto error_out;
}
if (mbm->mcurrent != NULL) {
/* Queue mbox cmd, if another mbox cmd is active */
if (mbp->mb_cbfn == NULL) {
rv = -EBUSY;
csio_dbg(hw, "Couldnt own Mailbox %x op:0x%x\n",
hw->pfn, *((uint8_t *)mbp->mb));
goto error_out;
} else {
list_add_tail(&mbp->list, &mbm->req_q);
CSIO_INC_STATS(mbm, n_activeq);
return 0;
}
}
/* Now get ownership of mailbox */
owner = MBOWNER_GET(csio_rd_reg32(hw, ctl_reg));
if (!csio_mb_is_host_owner(owner)) {
for (i = 0; (owner == CSIO_MBOWNER_NONE) && (i < 3); i++)
owner = MBOWNER_GET(csio_rd_reg32(hw, ctl_reg));
/*
* Mailbox unavailable. In immediate mode, fail the command.
* In other modes, enqueue the request.
*/
if (!csio_mb_is_host_owner(owner)) {
if (mbp->mb_cbfn == NULL) {
rv = owner ? -EBUSY : -ETIMEDOUT;
csio_dbg(hw,
"Couldnt own Mailbox %x op:0x%x "
"owner:%x\n",
hw->pfn, *((uint8_t *)mbp->mb), owner);
goto error_out;
} else {
if (mbm->mcurrent == NULL) {
csio_err(hw,
"Couldnt own Mailbox %x "
"op:0x%x owner:%x\n",
hw->pfn, *((uint8_t *)mbp->mb),
owner);
csio_err(hw,
"No outstanding driver"
" mailbox as well\n");
goto error_out;
}
}
}
}
/* Mailbox is available, copy mailbox data into it */
for (i = 0; i < size; i += 8) {
csio_wr_reg64(hw, be64_to_cpu(*cmd), data_reg + i);
cmd++;
}
CSIO_DUMP_MB(hw, hw->pfn, data_reg);
/* Start completion timers in non-immediate modes and notify FW */
if (mbp->mb_cbfn != NULL) {
mbm->mcurrent = mbp;
mod_timer(&mbm->timer, jiffies + msecs_to_jiffies(mbp->tmo));
csio_wr_reg32(hw, MBMSGVALID | MBINTREQ |
MBOWNER(CSIO_MBOWNER_FW), ctl_reg);
} else
csio_wr_reg32(hw, MBMSGVALID | MBOWNER(CSIO_MBOWNER_FW),
ctl_reg);
/* Flush posted writes */
csio_rd_reg32(hw, ctl_reg);
wmb();
CSIO_INC_STATS(mbm, n_req);
if (mbp->mb_cbfn)
return 0;
/* Poll for completion in immediate mode */
cmd = mbp->mb;
for (ii = 0; ii < mbp->tmo; ii += CSIO_MB_POLL_FREQ) {
mdelay(CSIO_MB_POLL_FREQ);
/* Check for response */
ctl = csio_rd_reg32(hw, ctl_reg);
if (csio_mb_is_host_owner(MBOWNER_GET(ctl))) {
if (!(ctl & MBMSGVALID)) {
csio_wr_reg32(hw, 0, ctl_reg);
continue;
}
CSIO_DUMP_MB(hw, hw->pfn, data_reg);
hdr = cpu_to_be64(csio_rd_reg64(hw, data_reg));
fw_hdr = (struct fw_cmd_hdr *)&hdr;
switch (FW_CMD_OP_GET(ntohl(fw_hdr->hi))) {
case FW_DEBUG_CMD:
csio_mb_debug_cmd_handler(hw);
continue;
}
/* Copy response */
for (i = 0; i < size; i += 8)
*cmd++ = cpu_to_be64(csio_rd_reg64
(hw, data_reg + i));
csio_wr_reg32(hw, 0, ctl_reg);
if (csio_mb_fw_retval(mbp) != FW_SUCCESS)
CSIO_INC_STATS(mbm, n_err);
CSIO_INC_STATS(mbm, n_rsp);
return 0;
}
}
CSIO_INC_STATS(mbm, n_tmo);
csio_err(hw, "Mailbox %x op:0x%x timed out!\n",
hw->pfn, *((uint8_t *)cmd));
return -ETIMEDOUT;
error_out:
CSIO_INC_STATS(mbm, n_err);
return rv;
}
/*
* csio_mb_completions - Completion handler for Mailbox commands
* @hw: The HW structure
* @cbfn_q: Completion queue.
*
*/
void
csio_mb_completions(struct csio_hw *hw, struct list_head *cbfn_q)
{
struct csio_mb *mbp;
struct csio_mbm *mbm = &hw->mbm;
enum fw_retval rv;
while (!list_empty(cbfn_q)) {
mbp = list_first_entry(cbfn_q, struct csio_mb, list);
list_del_init(&mbp->list);
rv = csio_mb_fw_retval(mbp);
if ((rv != FW_SUCCESS) && (rv != FW_HOSTERROR))
CSIO_INC_STATS(mbm, n_err);
else if (rv != FW_HOSTERROR)
CSIO_INC_STATS(mbm, n_rsp);
if (mbp->mb_cbfn)
mbp->mb_cbfn(hw, mbp);
}
}
static void
csio_mb_portmod_changed(struct csio_hw *hw, uint8_t port_id)
{
static char *mod_str[] = {
NULL, "LR", "SR", "ER", "TWINAX", "active TWINAX", "LRM"
};
struct csio_pport *port = &hw->pport[port_id];
if (port->mod_type == FW_PORT_MOD_TYPE_NONE)
csio_info(hw, "Port:%d - port module unplugged\n", port_id);
else if (port->mod_type < ARRAY_SIZE(mod_str))
csio_info(hw, "Port:%d - %s port module inserted\n", port_id,
mod_str[port->mod_type]);
else if (port->mod_type == FW_PORT_MOD_TYPE_NOTSUPPORTED)
csio_info(hw,
"Port:%d - unsupported optical port module "
"inserted\n", port_id);
else if (port->mod_type == FW_PORT_MOD_TYPE_UNKNOWN)
csio_info(hw,
"Port:%d - unknown port module inserted, forcing "
"TWINAX\n", port_id);
else if (port->mod_type == FW_PORT_MOD_TYPE_ERROR)
csio_info(hw, "Port:%d - transceiver module error\n", port_id);
else
csio_info(hw, "Port:%d - unknown module type %d inserted\n",
port_id, port->mod_type);
}
int
csio_mb_fwevt_handler(struct csio_hw *hw, __be64 *cmd)
{
uint8_t opcode = *(uint8_t *)cmd;
struct fw_port_cmd *pcmd;
uint8_t port_id;
uint32_t link_status;
uint16_t action;
uint8_t mod_type;
if (opcode == FW_PORT_CMD) {
pcmd = (struct fw_port_cmd *)cmd;
port_id = FW_PORT_CMD_PORTID_GET(
ntohl(pcmd->op_to_portid));
action = FW_PORT_CMD_ACTION_GET(
ntohl(pcmd->action_to_len16));
if (action != FW_PORT_ACTION_GET_PORT_INFO) {
csio_err(hw, "Unhandled FW_PORT_CMD action: %u\n",
action);
return -EINVAL;
}
link_status = ntohl(pcmd->u.info.lstatus_to_modtype);
mod_type = FW_PORT_CMD_MODTYPE_GET(link_status);
hw->pport[port_id].link_status =
FW_PORT_CMD_LSTATUS_GET(link_status);
hw->pport[port_id].link_speed =
FW_PORT_CMD_LSPEED_GET(link_status);
csio_info(hw, "Port:%x - LINK %s\n", port_id,
FW_PORT_CMD_LSTATUS_GET(link_status) ? "UP" : "DOWN");
if (mod_type != hw->pport[port_id].mod_type) {
hw->pport[port_id].mod_type = mod_type;
csio_mb_portmod_changed(hw, port_id);
}
} else if (opcode == FW_DEBUG_CMD) {
csio_mb_dump_fw_dbg(hw, cmd);
} else {
csio_dbg(hw, "Gen MB can't handle op:0x%x on evtq.\n", opcode);
return -EINVAL;
}
return 0;
}
/*
* csio_mb_isr_handler - Handle mailboxes related interrupts.
* @hw: The HW structure
*
* Called from the ISR to handle Mailbox related interrupts.
* HW Lock should be held across this call.
*/
int
csio_mb_isr_handler(struct csio_hw *hw)
{
struct csio_mbm *mbm = &hw->mbm;
struct csio_mb *mbp = mbm->mcurrent;
__be64 *cmd;
uint32_t ctl, cim_cause, pl_cause;
int i;
uint32_t ctl_reg = PF_REG(hw->pfn, CIM_PF_MAILBOX_CTRL);
uint32_t data_reg = PF_REG(hw->pfn, CIM_PF_MAILBOX_DATA);
int size;
__be64 hdr;
struct fw_cmd_hdr *fw_hdr;
pl_cause = csio_rd_reg32(hw, MYPF_REG(PL_PF_INT_CAUSE));
cim_cause = csio_rd_reg32(hw, MYPF_REG(CIM_PF_HOST_INT_CAUSE));
if (!(pl_cause & PFCIM) || !(cim_cause & MBMSGRDYINT)) {
CSIO_INC_STATS(hw, n_mbint_unexp);
return -EINVAL;
}
/*
* The cause registers below HAVE to be cleared in the SAME
* order as below: The low level cause register followed by
* the upper level cause register. In other words, CIM-cause
* first followed by PL-Cause next.
*/
csio_wr_reg32(hw, MBMSGRDYINT, MYPF_REG(CIM_PF_HOST_INT_CAUSE));
csio_wr_reg32(hw, PFCIM, MYPF_REG(PL_PF_INT_CAUSE));
ctl = csio_rd_reg32(hw, ctl_reg);
if (csio_mb_is_host_owner(MBOWNER_GET(ctl))) {
CSIO_DUMP_MB(hw, hw->pfn, data_reg);
if (!(ctl & MBMSGVALID)) {
csio_warn(hw,
"Stray mailbox interrupt recvd,"
" mailbox data not valid\n");
csio_wr_reg32(hw, 0, ctl_reg);
/* Flush */
csio_rd_reg32(hw, ctl_reg);
return -EINVAL;
}
hdr = cpu_to_be64(csio_rd_reg64(hw, data_reg));
fw_hdr = (struct fw_cmd_hdr *)&hdr;
switch (FW_CMD_OP_GET(ntohl(fw_hdr->hi))) {
case FW_DEBUG_CMD:
csio_mb_debug_cmd_handler(hw);
return -EINVAL;
#if 0
case FW_ERROR_CMD:
case FW_INITIALIZE_CMD: /* When we are not master */
#endif
}
CSIO_ASSERT(mbp != NULL);
cmd = mbp->mb;
size = mbp->mb_size;
/* Get response */
for (i = 0; i < size; i += 8)
*cmd++ = cpu_to_be64(csio_rd_reg64
(hw, data_reg + i));
csio_wr_reg32(hw, 0, ctl_reg);
/* Flush */
csio_rd_reg32(hw, ctl_reg);
mbm->mcurrent = NULL;
/* Add completion to tail of cbfn queue */
list_add_tail(&mbp->list, &mbm->cbfn_q);
CSIO_INC_STATS(mbm, n_cbfnq);
/*
* Enqueue event to EventQ. Events processing happens
* in Event worker thread context
*/
if (csio_enqueue_evt(hw, CSIO_EVT_MBX, mbp, sizeof(mbp)))
CSIO_INC_STATS(hw, n_evt_drop);
return 0;
} else {
/*
* We can get here if mailbox MSIX vector is shared,
* or in INTx case. Or a stray interrupt.
*/
csio_dbg(hw, "Host not owner, no mailbox interrupt\n");
CSIO_INC_STATS(hw, n_int_stray);
return -EINVAL;
}
}
/*
* csio_mb_tmo_handler - Timeout handler
* @hw: The HW structure
*
*/
struct csio_mb *
csio_mb_tmo_handler(struct csio_hw *hw)
{
struct csio_mbm *mbm = &hw->mbm;
struct csio_mb *mbp = mbm->mcurrent;
struct fw_cmd_hdr *fw_hdr;
/*
* Could be a race b/w the completion handler and the timer
* and the completion handler won that race.
*/
if (mbp == NULL) {
CSIO_DB_ASSERT(0);
return NULL;
}
fw_hdr = (struct fw_cmd_hdr *)(mbp->mb);
csio_dbg(hw, "Mailbox num:%x op:0x%x timed out\n", hw->pfn,
FW_CMD_OP_GET(ntohl(fw_hdr->hi)));
mbm->mcurrent = NULL;
CSIO_INC_STATS(mbm, n_tmo);
fw_hdr->lo = htonl(FW_CMD_RETVAL(FW_ETIMEDOUT));
return mbp;
}
/*
* csio_mb_cancel_all - Cancel all waiting commands.
* @hw: The HW structure
* @cbfn_q: The callback queue.
*
* Caller should hold hw lock across this call.
*/
void
csio_mb_cancel_all(struct csio_hw *hw, struct list_head *cbfn_q)
{
struct csio_mb *mbp;
struct csio_mbm *mbm = &hw->mbm;
struct fw_cmd_hdr *hdr;
struct list_head *tmp;
if (mbm->mcurrent) {
mbp = mbm->mcurrent;
/* Stop mailbox completion timer */
del_timer_sync(&mbm->timer);
/* Add completion to tail of cbfn queue */
list_add_tail(&mbp->list, cbfn_q);
mbm->mcurrent = NULL;
}
if (!list_empty(&mbm->req_q)) {
list_splice_tail_init(&mbm->req_q, cbfn_q);
mbm->stats.n_activeq = 0;
}
if (!list_empty(&mbm->cbfn_q)) {
list_splice_tail_init(&mbm->cbfn_q, cbfn_q);
mbm->stats.n_cbfnq = 0;
}
if (list_empty(cbfn_q))
return;
list_for_each(tmp, cbfn_q) {
mbp = (struct csio_mb *)tmp;
hdr = (struct fw_cmd_hdr *)(mbp->mb);
csio_dbg(hw, "Cancelling pending mailbox num %x op:%x\n",
hw->pfn, FW_CMD_OP_GET(ntohl(hdr->hi)));
CSIO_INC_STATS(mbm, n_cancel);
hdr->lo = htonl(FW_CMD_RETVAL(FW_HOSTERROR));
}
}
/*
* csio_mbm_init - Initialize Mailbox module
* @mbm: Mailbox module
* @hw: The HW structure
* @timer: Timing function for interrupting mailboxes
*
* Initialize timer and the request/response queues.
*/
int
csio_mbm_init(struct csio_mbm *mbm, struct csio_hw *hw,
void (*timer_fn)(uintptr_t))
{
struct timer_list *timer = &mbm->timer;
init_timer(timer);
timer->function = timer_fn;
timer->data = (unsigned long)hw;
INIT_LIST_HEAD(&mbm->req_q);
INIT_LIST_HEAD(&mbm->cbfn_q);
csio_set_mb_intr_idx(mbm, -1);
return 0;
}
/*
* csio_mbm_exit - Uninitialize mailbox module
* @mbm: Mailbox module
*
* Stop timer.
*/
void
csio_mbm_exit(struct csio_mbm *mbm)
{
del_timer_sync(&mbm->timer);
CSIO_DB_ASSERT(mbm->mcurrent == NULL);
CSIO_DB_ASSERT(list_empty(&mbm->req_q));
CSIO_DB_ASSERT(list_empty(&mbm->cbfn_q));
}
