/* * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet * driver for Linux. * * Copyright (c) 2009-2010 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.
*/
/* * Wait for the device to become ready (signified by our "who am I" register * returning a value other than all 1's). Return an error if it doesn't * become ready ...
*/ int t4vf_wait_dev_ready(struct adapter *adapter)
{ const u32 whoami = T4VF_PL_BASE_ADDR + PL_VF_WHOAMI; const u32 notready1 = 0xffffffff; const u32 notready2 = 0xeeeeeeee;
u32 val;
val = t4_read_reg(adapter, whoami); if (val != notready1 && val != notready2) return 0;
msleep(500);
val = t4_read_reg(adapter, whoami); if (val != notready1 && val != notready2) return 0; else return -EIO;
}
/* * Get the reply to a mailbox command and store it in @rpl in big-endian order * (since the firmware data structures are specified in a big-endian layout).
*/ staticvoid get_mbox_rpl(struct adapter *adapter, __be64 *rpl, int size,
u32 mbox_data)
{ for ( ; size; size -= 8, mbox_data += 8)
*rpl++ = cpu_to_be64(t4_read_reg64(adapter, mbox_data));
}
/** * t4vf_record_mbox - record a Firmware Mailbox Command/Reply in the log * @adapter: the adapter * @cmd: the Firmware Mailbox Command or Reply * @size: command length in bytes * @access: the time (ms) needed to access the Firmware Mailbox * @execute: the time (ms) the command spent being executed
*/ staticvoid t4vf_record_mbox(struct adapter *adapter, const __be64 *cmd, int size, int access, int execute)
{ struct mbox_cmd_log *log = adapter->mbox_log; struct mbox_cmd *entry; int i;
for (i = 0; i < size / 8; i++)
entry->cmd[i] = be64_to_cpu(cmd[i]); while (i < MBOX_LEN / 8)
entry->cmd[i++] = 0;
entry->timestamp = jiffies;
entry->seqno = log->seqno++;
entry->access = access;
entry->execute = execute;
}
/** * t4vf_wr_mbox_core - send a command to FW through the mailbox * @adapter: the adapter * @cmd: the command to write * @size: command length in bytes * @rpl: where to optionally store the reply * @sleep_ok: if true we may sleep while awaiting command completion * * Sends the given command to FW through the mailbox and waits for the * FW to execute the command. If @rpl is not %NULL it is used to store * the FW's reply to the command. The command and its optional reply * are of the same length. FW can take up to 500 ms to respond. * @sleep_ok determines whether we may sleep while awaiting the response. * If sleeping is allowed we use progressive backoff otherwise we spin. * * The return value is 0 on success or a negative errno on failure. A * failure can happen either because we are not able to execute the * command or FW executes it but signals an error. In the latter case * the return value is the error code indicated by FW (negated).
*/ int t4vf_wr_mbox_core(struct adapter *adapter, constvoid *cmd, int size, void *rpl, bool sleep_ok)
{ staticconstint delay[] = {
1, 1, 3, 5, 10, 10, 20, 50, 100
};
/* In T6, mailbox size is changed to 128 bytes to avoid * invalidating the entire prefetch buffer.
*/ if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
mbox_data = T4VF_MBDATA_BASE_ADDR; else
mbox_data = T6VF_MBDATA_BASE_ADDR;
/* * Commands must be multiples of 16 bytes in length and may not be * larger than the size of the Mailbox Data register array.
*/ if ((size % 16) != 0 ||
size > NUM_CIM_VF_MAILBOX_DATA_INSTANCES * 4) return -EINVAL;
/* Queue ourselves onto the mailbox access list. When our entry is at * the front of the list, we have rights to access the mailbox. So we * wait [for a while] till we're at the front [or bail out with an * EBUSY] ...
*/
spin_lock(&adapter->mbox_lock);
list_add_tail(&entry.list, &adapter->mlist.list);
spin_unlock(&adapter->mbox_lock);
delay_idx = 0;
ms = delay[0];
for (i = 0; ; i += ms) { /* If we've waited too long, return a busy indication. This * really ought to be based on our initial position in the * mailbox access list but this is a start. We very rearely * contend on access to the mailbox ...
*/ if (i > FW_CMD_MAX_TIMEOUT) {
spin_lock(&adapter->mbox_lock);
list_del(&entry.list);
spin_unlock(&adapter->mbox_lock);
ret = -EBUSY;
t4vf_record_mbox(adapter, cmd, size, access, ret); return ret;
}
/* If we're at the head, break out and start the mailbox * protocol.
*/ if (list_first_entry(&adapter->mlist.list, struct mbox_list,
list) == &entry) break;
/* Delay for a bit before checking again ... */ if (sleep_ok) {
ms = delay[delay_idx]; /* last element may repeat */ if (delay_idx < ARRAY_SIZE(delay) - 1)
delay_idx++;
msleep(ms);
} else {
mdelay(ms);
}
}
/* * Loop trying to get ownership of the mailbox. Return an error * if we can't gain ownership.
*/
v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl)); for (i = 0; v == MBOX_OWNER_NONE && i < 3; i++)
v = MBOWNER_G(t4_read_reg(adapter, mbox_ctl)); if (v != MBOX_OWNER_DRV) {
spin_lock(&adapter->mbox_lock);
list_del(&entry.list);
spin_unlock(&adapter->mbox_lock);
ret = (v == MBOX_OWNER_FW) ? -EBUSY : -ETIMEDOUT;
t4vf_record_mbox(adapter, cmd, size, access, ret); return ret;
}
/* * Write the command array into the Mailbox Data register array and * transfer ownership of the mailbox to the firmware. * * For the VFs, the Mailbox Data "registers" are actually backed by * T4's "MA" interface rather than PL Registers (as is the case for * the PFs). Because these are in different coherency domains, the * write to the VF's PL-register-backed Mailbox Control can race in * front of the writes to the MA-backed VF Mailbox Data "registers". * So we need to do a read-back on at least one byte of the VF Mailbox * Data registers before doing the write to the VF Mailbox Control * register.
*/ if (cmd_op != FW_VI_STATS_CMD)
t4vf_record_mbox(adapter, cmd, size, access, 0); for (i = 0, p = cmd; i < size; i += 8)
t4_write_reg64(adapter, mbox_data + i, be64_to_cpu(*p++));
t4_read_reg(adapter, mbox_data); /* flush write */
/* * Spin waiting for firmware to acknowledge processing our command.
*/
delay_idx = 0;
ms = delay[0];
for (i = 0; i < FW_CMD_MAX_TIMEOUT; i += ms) { if (sleep_ok) {
ms = delay[delay_idx]; if (delay_idx < ARRAY_SIZE(delay) - 1)
delay_idx++;
msleep(ms);
} else
mdelay(ms);
/* * If we're the owner, see if this is the reply we wanted.
*/
v = t4_read_reg(adapter, mbox_ctl); if (MBOWNER_G(v) == MBOX_OWNER_DRV) { /* * If the Message Valid bit isn't on, revoke ownership * of the mailbox and continue waiting for our reply.
*/ if ((v & MBMSGVALID_F) == 0) {
t4_write_reg(adapter, mbox_ctl,
MBOWNER_V(MBOX_OWNER_NONE)); continue;
}
/* * We now have our reply. Extract the command return * value, copy the reply back to our caller's buffer * (if specified) and revoke ownership of the mailbox. * We return the (negated) firmware command return * code (this depends on FW_SUCCESS == 0).
*/
get_mbox_rpl(adapter, cmd_rpl, size, mbox_data);
/* return value in low-order little-endian word */
v = be64_to_cpu(cmd_rpl[0]);
if (rpl) { /* request bit in high-order BE word */
WARN_ON((be32_to_cpu(*(const __be32 *)cmd)
& FW_CMD_REQUEST_F) == 0);
memcpy(rpl, cmd_rpl, size);
WARN_ON((be32_to_cpu(*(__be32 *)rpl)
& FW_CMD_REQUEST_F) != 0);
}
t4_write_reg(adapter, mbox_ctl,
MBOWNER_V(MBOX_OWNER_NONE));
execute = i + ms; if (cmd_op != FW_VI_STATS_CMD)
t4vf_record_mbox(adapter, cmd_rpl, size, access,
execute);
spin_lock(&adapter->mbox_lock);
list_del(&entry.list);
spin_unlock(&adapter->mbox_lock); return -FW_CMD_RETVAL_G(v);
}
}
/* We timed out. Return the error ... */
ret = -ETIMEDOUT;
t4vf_record_mbox(adapter, cmd, size, access, ret);
spin_lock(&adapter->mbox_lock);
list_del(&entry.list);
spin_unlock(&adapter->mbox_lock); return ret;
}
/* In the Physical Function Driver Common Code, the ADVERT_MASK is used to * mask out bits in the Advertised Port Capabilities which are managed via * separate controls, like Pause Frames and Forward Error Correction. In the * Virtual Function Common Code, since we never perform L1 Configuration on * the Link, the only things we really need to filter out are things which * we decode and report separately like Speed.
*/ #define ADVERT_MASK (FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_M) | \
FW_PORT_CAP32_802_3_PAUSE | \
FW_PORT_CAP32_802_3_ASM_DIR | \
FW_PORT_CAP32_FEC_V(FW_PORT_CAP32_FEC_M) | \
FW_PORT_CAP32_ANEG)
/** * fwcaps16_to_caps32 - convert 16-bit Port Capabilities to 32-bits * @caps16: a 16-bit Port Capabilities value * * Returns the equivalent 32-bit Port Capabilities value.
*/ static fw_port_cap32_t fwcaps16_to_caps32(fw_port_cap16_t caps16)
{
fw_port_cap32_t caps32 = 0;
#define CAP16_TO_CAP32(__cap) \ do { \ if (caps16 & FW_PORT_CAP_##__cap) \
caps32 |= FW_PORT_CAP32_##__cap; \
} while (0)
if (fw_fec & FW_PORT_CAP32_FEC_RS)
cc_fec |= FEC_RS; if (fw_fec & FW_PORT_CAP32_FEC_BASER_RS)
cc_fec |= FEC_BASER_RS;
return cc_fec;
}
/* Return the highest speed set in the port capabilities, in Mb/s. */ staticunsignedint fwcap_to_speed(fw_port_cap32_t caps)
{ #define TEST_SPEED_RETURN(__caps_speed, __speed) \ do { \ if (caps & FW_PORT_CAP32_SPEED_##__caps_speed) \ return __speed; \
} while (0)
/** * fwcap_to_fwspeed - return highest speed in Port Capabilities * @acaps: advertised Port Capabilities * * Get the highest speed for the port from the advertised Port * Capabilities. It will be either the highest speed from the list of * speeds or whatever user has set using ethtool.
*/ static fw_port_cap32_t fwcap_to_fwspeed(fw_port_cap32_t acaps)
{ #define TEST_SPEED_RETURN(__caps_speed) \ do { \ if (acaps & FW_PORT_CAP32_SPEED_##__caps_speed) \ return FW_PORT_CAP32_SPEED_##__caps_speed; \
} while (0)
/* * init_link_config - initialize a link's SW state * @lc: structure holding the link state * @pcaps: link Port Capabilities * @acaps: link current Advertised Port Capabilities * * Initializes the SW state maintained for each link, including the link's * capabilities and default speed/flow-control/autonegotiation settings.
*/ staticvoid init_link_config(struct link_config *lc,
fw_port_cap32_t pcaps,
fw_port_cap32_t acaps)
{
lc->pcaps = pcaps;
lc->lpacaps = 0;
lc->speed_caps = 0;
lc->speed = 0;
lc->requested_fc = lc->fc = PAUSE_RX | PAUSE_TX;
/* For Forward Error Control, we default to whatever the Firmware * tells us the Link is currently advertising.
*/
lc->auto_fec = fwcap_to_cc_fec(acaps);
lc->requested_fec = FEC_AUTO;
lc->fec = lc->auto_fec;
/* If the Port is capable of Auto-Negtotiation, initialize it as * "enabled" and copy over all of the Physical Port Capabilities * to the Advertised Port Capabilities. Otherwise mark it as * Auto-Negotiate disabled and select the highest supported speed * for the link. Note parallel structure in t4_link_l1cfg_core() * and t4_handle_get_port_info().
*/ if (lc->pcaps & FW_PORT_CAP32_ANEG) {
lc->acaps = acaps & ADVERT_MASK;
lc->autoneg = AUTONEG_ENABLE;
lc->requested_fc |= PAUSE_AUTONEG;
} else {
lc->acaps = 0;
lc->autoneg = AUTONEG_DISABLE;
lc->speed_caps = fwcap_to_fwspeed(acaps);
}
}
/** * t4vf_port_init - initialize port hardware/software state * @adapter: the adapter * @pidx: the adapter port index
*/ int t4vf_port_init(struct adapter *adapter, int pidx)
{ struct port_info *pi = adap2pinfo(adapter, pidx); unsignedint fw_caps = adapter->params.fw_caps_support; struct fw_vi_cmd vi_cmd, vi_rpl; struct fw_port_cmd port_cmd, port_rpl; enum fw_port_type port_type; int mdio_addr;
fw_port_cap32_t pcaps, acaps; int ret;
/* If we haven't yet determined whether we're talking to Firmware * which knows the new 32-bit Port Capabilities, it's time to find * out now. This will also tell new Firmware to send us Port Status * Updates using the new 32-bit Port Capabilities version of the * Port Information message.
*/ if (fw_caps == FW_CAPS_UNKNOWN) {
u32 param, val;
/* * Execute a VI Read command to get our Virtual Interface information * like MAC address, etc.
*/
memset(&vi_cmd, 0, sizeof(vi_cmd));
vi_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
FW_CMD_REQUEST_F |
FW_CMD_READ_F);
vi_cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(vi_cmd));
vi_cmd.type_viid = cpu_to_be16(FW_VI_CMD_VIID_V(pi->viid));
ret = t4vf_wr_mbox(adapter, &vi_cmd, sizeof(vi_cmd), &vi_rpl); if (ret != FW_SUCCESS) return ret;
/* * If we don't have read access to our port information, we're done * now. Otherwise, execute a PORT Read command to get it ...
*/ if (!(adapter->params.vfres.r_caps & FW_CMD_CAP_PORT)) return 0;
/* Extract the various fields from the Port Information message. */ if (fw_caps == FW_CAPS16) {
u32 lstatus = be32_to_cpu(port_rpl.u.info.lstatus_to_modtype);
/** * t4vf_fw_reset - issue a reset to FW * @adapter: the adapter * * Issues a reset command to FW. For a Physical Function this would * result in the Firmware resetting all of its state. For a Virtual * Function this just resets the state associated with the VF.
*/ int t4vf_fw_reset(struct adapter *adapter)
{ struct fw_reset_cmd cmd;
/** * t4vf_query_params - query FW or device parameters * @adapter: the adapter * @nparams: the number of parameters * @params: the parameter names * @vals: the parameter values * * Reads the values of firmware or device parameters. Up to 7 parameters * can be queried at once.
*/ staticint t4vf_query_params(struct adapter *adapter, unsignedint nparams, const u32 *params, u32 *vals)
{ int i, ret; struct fw_params_cmd cmd, rpl; struct fw_params_param *p;
size_t len16;
if (nparams > 7) return -EINVAL;
memset(&cmd, 0, sizeof(cmd));
cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
FW_CMD_REQUEST_F |
FW_CMD_READ_F);
len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
param[nparams].mnem), 16);
cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16)); for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++)
p->mnem = htonl(*params++);
ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (ret == 0) for (i = 0, p = &rpl.param[0]; i < nparams; i++, p++)
*vals++ = be32_to_cpu(p->val); return ret;
}
/** * t4vf_set_params - sets FW or device parameters * @adapter: the adapter * @nparams: the number of parameters * @params: the parameter names * @vals: the parameter values * * Sets the values of firmware or device parameters. Up to 7 parameters * can be specified at once.
*/ int t4vf_set_params(struct adapter *adapter, unsignedint nparams, const u32 *params, const u32 *vals)
{ int i; struct fw_params_cmd cmd; struct fw_params_param *p;
size_t len16;
if (nparams > 7) return -EINVAL;
memset(&cmd, 0, sizeof(cmd));
cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PARAMS_CMD) |
FW_CMD_REQUEST_F |
FW_CMD_WRITE_F);
len16 = DIV_ROUND_UP(offsetof(struct fw_params_cmd,
param[nparams]), 16);
cmd.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(len16)); for (i = 0, p = &cmd.param[0]; i < nparams; i++, p++) {
p->mnem = cpu_to_be32(*params++);
p->val = cpu_to_be32(*vals++);
}
/** * t4vf_fl_pkt_align - return the fl packet alignment * @adapter: the adapter * * T4 has a single field to specify the packing and padding boundary. * T5 onwards has separate fields for this and hence the alignment for * next packet offset is maximum of these two. And T6 changes the * Ingress Padding Boundary Shift, so it's all a mess and it's best * if we put this in low-level Common Code ... *
*/ int t4vf_fl_pkt_align(struct adapter *adapter)
{
u32 sge_control, sge_control2; unsignedint ingpadboundary, ingpackboundary, fl_align, ingpad_shift;
sge_control = adapter->params.sge.sge_control;
/* T4 uses a single control field to specify both the PCIe Padding and * Packing Boundary. T5 introduced the ability to specify these * separately. The actual Ingress Packet Data alignment boundary * within Packed Buffer Mode is the maximum of these two * specifications. (Note that it makes no real practical sense to * have the Padding Boundary be larger than the Packing Boundary but you * could set the chip up that way and, in fact, legacy T4 code would * end doing this because it would initialize the Padding Boundary and * leave the Packing Boundary initialized to 0 (16 bytes).) * Padding Boundary values in T6 starts from 8B, * where as it is 32B for T4 and T5.
*/ if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
ingpad_shift = INGPADBOUNDARY_SHIFT_X; else
ingpad_shift = T6_INGPADBOUNDARY_SHIFT_X;
fl_align = ingpadboundary; if (!is_t4(adapter->params.chip)) { /* T5 has a different interpretation of one of the PCIe Packing * Boundary values.
*/
sge_control2 = adapter->params.sge.sge_control2;
ingpackboundary = INGPACKBOUNDARY_G(sge_control2); if (ingpackboundary == INGPACKBOUNDARY_16B_X)
ingpackboundary = 16; else
ingpackboundary = 1 << (ingpackboundary +
INGPACKBOUNDARY_SHIFT_X);
/** * t4vf_bar2_sge_qregs - return BAR2 SGE Queue register information * @adapter: the adapter * @qid: the Queue ID * @qtype: the Ingress or Egress type for @qid * @pbar2_qoffset: BAR2 Queue Offset * @pbar2_qid: BAR2 Queue ID or 0 for Queue ID inferred SGE Queues * * Returns the BAR2 SGE Queue Registers information associated with the * indicated Absolute Queue ID. These are passed back in return value * pointers. @qtype should be T4_BAR2_QTYPE_EGRESS for Egress Queue * and T4_BAR2_QTYPE_INGRESS for Ingress Queues. * * This may return an error which indicates that BAR2 SGE Queue * registers aren't available. If an error is not returned, then the * following values are returned: * * *@pbar2_qoffset: the BAR2 Offset of the @qid Registers * *@pbar2_qid: the BAR2 SGE Queue ID or 0 of @qid * * If the returned BAR2 Queue ID is 0, then BAR2 SGE registers which * require the "Inferred Queue ID" ability may be used. E.g. the * Write Combining Doorbell Buffer. If the BAR2 Queue ID is not 0, * then these "Inferred Queue ID" register may not be used.
*/ int t4vf_bar2_sge_qregs(struct adapter *adapter, unsignedint qid, enum t4_bar2_qtype qtype,
u64 *pbar2_qoffset, unsignedint *pbar2_qid)
{ unsignedint page_shift, page_size, qpp_shift, qpp_mask;
u64 bar2_page_offset, bar2_qoffset; unsignedint bar2_qid, bar2_qid_offset, bar2_qinferred;
/* T4 doesn't support BAR2 SGE Queue registers.
*/ if (is_t4(adapter->params.chip)) return -EINVAL;
/* Get the right Queues per Page parameters for our Queue.
*/
qpp_shift = (qtype == T4_BAR2_QTYPE_EGRESS
? adapter->params.sge.sge_vf_eq_qpp
: adapter->params.sge.sge_vf_iq_qpp);
qpp_mask = (1 << qpp_shift) - 1;
/* Calculate the basics of the BAR2 SGE Queue register area: * o The BAR2 page the Queue registers will be in. * o The BAR2 Queue ID. * o The BAR2 Queue ID Offset into the BAR2 page.
*/
bar2_page_offset = ((u64)(qid >> qpp_shift) << page_shift);
bar2_qid = qid & qpp_mask;
bar2_qid_offset = bar2_qid * SGE_UDB_SIZE;
/* If the BAR2 Queue ID Offset is less than the Page Size, then the * hardware will infer the Absolute Queue ID simply from the writes to * the BAR2 Queue ID Offset within the BAR2 Page (and we need to use a * BAR2 Queue ID of 0 for those writes). Otherwise, we'll simply * write to the first BAR2 SGE Queue Area within the BAR2 Page with * the BAR2 Queue ID and the hardware will infer the Absolute Queue ID * from the BAR2 Page and BAR2 Queue ID. * * One important censequence of this is that some BAR2 SGE registers * have a "Queue ID" field and we can write the BAR2 SGE Queue ID * there. But other registers synthesize the SGE Queue ID purely * from the writes to the registers -- the Write Combined Doorbell * Buffer is a good example. These BAR2 SGE Registers are only * available for those BAR2 SGE Register areas where the SGE Absolute * Queue ID can be inferred from simple writes.
*/
bar2_qoffset = bar2_page_offset;
bar2_qinferred = (bar2_qid_offset < page_size); if (bar2_qinferred) {
bar2_qoffset += bar2_qid_offset;
bar2_qid = 0;
}
/** * t4vf_get_sge_params - retrieve adapter Scatter gather Engine parameters * @adapter: the adapter * * Retrieves various core SGE parameters in the form of hardware SGE * register values. The caller is responsible for decoding these as * needed. The SGE parameters are stored in @adapter->params.sge.
*/ int t4vf_get_sge_params(struct adapter *adapter)
{ struct sge_params *sge_params = &adapter->params.sge;
u32 params[7], vals[7]; int v;
/* T4 uses a single control field to specify both the PCIe Padding and * Packing Boundary. T5 introduced the ability to specify these * separately with the Padding Boundary in SGE_CONTROL and Packing * Boundary in SGE_CONTROL2. So for T5 and later we need to grab * SGE_CONTROL in order to determine how ingress packet data will be * laid out in Packed Buffer Mode. Unfortunately, older versions of * the firmware won't let us retrieve SGE_CONTROL2 so if we get a * failure grabbing it we throw an error since we can't figure out the * right value.
*/ if (!is_t4(adapter->params.chip)) {
params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ_V(SGE_CONTROL2_A));
v = t4vf_query_params(adapter, 1, params, vals); if (v != FW_SUCCESS) {
dev_err(adapter->pdev_dev, "Unable to get SGE Control2; " "probably old firmware.\n"); return v;
}
sge_params->sge_control2 = vals[0];
}
/* For T5 and later we want to use the new BAR2 Doorbells. * Unfortunately, older firmware didn't allow the this register to be * read.
*/ if (!is_t4(adapter->params.chip)) { unsignedint pf, s_hps, s_qpp;
params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ_V(
SGE_EGRESS_QUEUES_PER_PAGE_VF_A));
params[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_REG) |
FW_PARAMS_PARAM_XYZ_V(
SGE_INGRESS_QUEUES_PER_PAGE_VF_A));
v = t4vf_query_params(adapter, 2, params, vals); if (v != FW_SUCCESS) {
dev_warn(adapter->pdev_dev, "Unable to get VF SGE Queues/Page; " "probably old firmware.\n"); return v;
}
sge_params->sge_egress_queues_per_page = vals[0];
sge_params->sge_ingress_queues_per_page = vals[1];
/* We need the Queues/Page for our VF. This is based on the * PF from which we're instantiated and is indexed in the * register we just read. Do it once here so other code in * the driver can just use it.
*/
pf = t4vf_get_pf_from_vf(adapter);
s_hps = (HOSTPAGESIZEPF0_S +
(HOSTPAGESIZEPF1_S - HOSTPAGESIZEPF0_S) * pf);
sge_params->sge_vf_hps =
((sge_params->sge_host_page_size >> s_hps)
& HOSTPAGESIZEPF0_M);
/** * t4vf_get_rss_glb_config - retrieve adapter RSS Global Configuration * @adapter: the adapter * * Retrieves global RSS mode and parameters with which we have to live * and stores them in the @adapter's RSS parameters.
*/ int t4vf_get_rss_glb_config(struct adapter *adapter)
{ struct rss_params *rss = &adapter->params.rss; struct fw_rss_glb_config_cmd cmd, rpl; int v;
/* * Execute an RSS Global Configuration read command to retrieve * our RSS configuration.
*/
memset(&cmd, 0, sizeof(cmd));
cmd.op_to_write = cpu_to_be32(FW_CMD_OP_V(FW_RSS_GLB_CONFIG_CMD) |
FW_CMD_REQUEST_F |
FW_CMD_READ_F);
cmd.retval_len16 = cpu_to_be32(FW_LEN16(cmd));
v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (v) return v;
/* * Transate the big-endian RSS Global Configuration into our * cpu-endian format based on the RSS mode. We also do first level * filtering at this point to weed out modes which don't support * VF Drivers ...
*/
rss->mode = FW_RSS_GLB_CONFIG_CMD_MODE_G(
be32_to_cpu(rpl.u.manual.mode_pkd)); switch (rss->mode) { case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL: {
u32 word = be32_to_cpu(
rpl.u.basicvirtual.synmapen_to_hashtoeplitz);
/** * t4vf_read_rss_vi_config - read a VI's RSS configuration * @adapter: the adapter * @viid: Virtual Interface ID * @config: pointer to host-native VI RSS Configuration buffer * * Reads the Virtual Interface's RSS configuration information and * translates it into CPU-native format.
*/ int t4vf_read_rss_vi_config(struct adapter *adapter, unsignedint viid, union rss_vi_config *config)
{ struct fw_rss_vi_config_cmd cmd, rpl; int v;
/** * t4vf_write_rss_vi_config - write a VI's RSS configuration * @adapter: the adapter * @viid: Virtual Interface ID * @config: pointer to host-native VI RSS Configuration buffer * * Write the Virtual Interface's RSS configuration information * (translating it into firmware-native format before writing).
*/ int t4vf_write_rss_vi_config(struct adapter *adapter, unsignedint viid, union rss_vi_config *config)
{ struct fw_rss_vi_config_cmd cmd, rpl;
if (config->basicvirtual.ip6fourtupen)
word |= FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F; if (config->basicvirtual.ip6twotupen)
word |= FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F; if (config->basicvirtual.ip4fourtupen)
word |= FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F; if (config->basicvirtual.ip4twotupen)
word |= FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F; if (config->basicvirtual.udpen)
word |= FW_RSS_VI_CONFIG_CMD_UDPEN_F;
word |= FW_RSS_VI_CONFIG_CMD_DEFAULTQ_V(
config->basicvirtual.defaultq);
cmd.u.basicvirtual.defaultq_to_udpen = cpu_to_be32(word); break;
}
/** * t4vf_config_rss_range - configure a portion of the RSS mapping table * @adapter: the adapter * @viid: Virtual Interface of RSS Table Slice * @start: starting entry in the table to write * @n: how many table entries to write * @rspq: values for the "Response Queue" (Ingress Queue) lookup table * @nrspq: number of values in @rspq * * Programs the selected part of the VI's RSS mapping table with the * provided values. If @nrspq < @n the supplied values are used repeatedly * until the full table range is populated. * * The caller must ensure the values in @rspq are in the range 0..1023.
*/ int t4vf_config_rss_range(struct adapter *adapter, unsignedint viid, int start, int n, const u16 *rspq, int nrspq)
{ const u16 *rsp = rspq; const u16 *rsp_end = rspq+nrspq; struct fw_rss_ind_tbl_cmd cmd;
/* * Each firmware RSS command can accommodate up to 32 RSS Ingress * Queue Identifiers. These Ingress Queue IDs are packed three to * a 32-bit word as 10-bit values with the upper remaining 2 bits * reserved.
*/ while (n > 0) {
__be32 *qp = &cmd.iq0_to_iq2; int nq = min(n, 32); int ret;
/* * Set up the firmware RSS command header to send the next * "nq" Ingress Queue IDs to the firmware.
*/
cmd.niqid = cpu_to_be16(nq);
cmd.startidx = cpu_to_be16(start);
/* * "nq" more done for the start of the next loop.
*/
start += nq;
n -= nq;
/* * While there are still Ingress Queue IDs to stuff into the * current firmware RSS command, retrieve them from the * Ingress Queue ID array and insert them into the command.
*/ while (nq > 0) { /* * Grab up to the next 3 Ingress Queue IDs (wrapping * around the Ingress Queue ID array if necessary) and * insert them into the firmware RSS command at the * current 3-tuple position within the commad.
*/
u16 qbuf[3];
u16 *qbp = qbuf; int nqbuf = min(3, nq);
/* * Send this portion of the RRS table update to the firmware; * bail out on any errors.
*/
ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), NULL); if (ret) return ret;
} return 0;
}
/** * t4vf_alloc_vi - allocate a virtual interface on a port * @adapter: the adapter * @port_id: physical port associated with the VI * * Allocate a new Virtual Interface and bind it to the indicated * physical port. Return the new Virtual Interface Identifier on * success, or a [negative] error number on failure.
*/ int t4vf_alloc_vi(struct adapter *adapter, int port_id)
{ struct fw_vi_cmd cmd, rpl; int v;
/* * Execute a VI command to allocate Virtual Interface and return its * VIID.
*/
memset(&cmd, 0, sizeof(cmd));
cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_VI_CMD) |
FW_CMD_REQUEST_F |
FW_CMD_WRITE_F |
FW_CMD_EXEC_F);
cmd.alloc_to_len16 = cpu_to_be32(FW_LEN16(cmd) |
FW_VI_CMD_ALLOC_F);
cmd.portid_pkd = FW_VI_CMD_PORTID_V(port_id);
v = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (v) return v;
/** * t4vf_enable_pi - enable/disable a Port's virtual interface * @adapter: the adapter * @pi: the Port Information structure * @rx_en: 1=enable Rx, 0=disable Rx * @tx_en: 1=enable Tx, 0=disable Tx * * Enables/disables a Port's virtual interface. If the Virtual * Interface enable/disable operation is successful, we notify the * OS-specific code of a potential Link Status change via the OS Contract * API t4vf_os_link_changed().
*/ int t4vf_enable_pi(struct adapter *adapter, struct port_info *pi, bool rx_en, bool tx_en)
{ int ret = t4vf_enable_vi(adapter, pi->viid, rx_en, tx_en);
/** * t4vf_identify_port - identify a VI's port by blinking its LED * @adapter: the adapter * @viid: the Virtual Interface ID * @nblinks: how many times to blink LED at 2.5 Hz * * Identifies a VI's port by blinking its LED.
*/ int t4vf_identify_port(struct adapter *adapter, unsignedint viid, unsignedint nblinks)
{ struct fw_vi_enable_cmd cmd;
/** * t4vf_set_rxmode - set Rx properties of a virtual interface * @adapter: the adapter * @viid: the VI id * @mtu: the new MTU or -1 for no change * @promisc: 1 to enable promiscuous mode, 0 to disable it, -1 no change * @all_multi: 1 to enable all-multi mode, 0 to disable it, -1 no change * @bcast: 1 to enable broadcast Rx, 0 to disable it, -1 no change * @vlanex: 1 to enable hardware VLAN Tag extraction, 0 to disable it, * -1 no change * @sleep_ok: call is allowed to sleep * * Sets Rx properties of a virtual interface.
*/ int t4vf_set_rxmode(struct adapter *adapter, unsignedint viid, int mtu, int promisc, int all_multi, int bcast, int vlanex, bool sleep_ok)
{ struct fw_vi_rxmode_cmd cmd;
/* convert to FW values */ if (mtu < 0)
mtu = FW_VI_RXMODE_CMD_MTU_M; if (promisc < 0)
promisc = FW_VI_RXMODE_CMD_PROMISCEN_M; if (all_multi < 0)
all_multi = FW_VI_RXMODE_CMD_ALLMULTIEN_M; if (bcast < 0)
bcast = FW_VI_RXMODE_CMD_BROADCASTEN_M; if (vlanex < 0)
vlanex = FW_VI_RXMODE_CMD_VLANEXEN_M;
/** * t4vf_alloc_mac_filt - allocates exact-match filters for MAC addresses * @adapter: the adapter * @viid: the Virtual Interface Identifier * @free: if true any existing filters for this VI id are first removed * @naddr: the number of MAC addresses to allocate filters for (up to 7) * @addr: the MAC address(es) * @idx: where to store the index of each allocated filter * @hash: pointer to hash address filter bitmap * @sleep_ok: call is allowed to sleep * * Allocates an exact-match filter for each of the supplied addresses and * sets it to the corresponding address. If @idx is not %NULL it should * have at least @naddr entries, each of which will be set to the index of * the filter allocated for the corresponding MAC address. If a filter * could not be allocated for an address its index is set to 0xffff. * If @hash is not %NULL addresses that fail to allocate an exact filter * are hashed and update the hash filter bitmap pointed at by @hash. * * Returns a negative error number or the number of filters allocated.
*/ int t4vf_alloc_mac_filt(struct adapter *adapter, unsignedint viid, bool free, unsignedint naddr, const u8 **addr, u16 *idx,
u64 *hash, bool sleep_ok)
{ int offset, ret = 0; unsigned nfilters = 0; unsignedint rem = naddr; struct fw_vi_mac_cmd cmd, rpl; unsignedint max_naddr = adapter->params.arch.mps_tcam_size;
free = false;
offset += fw_naddr;
rem -= fw_naddr;
}
/* * If there were no errors or we merely ran out of room in our MAC * address arena, return the number of filters actually written.
*/ if (ret == 0 || ret == -ENOMEM)
ret = nfilters; return ret;
}
/** * t4vf_free_mac_filt - frees exact-match filters of given MAC addresses * @adapter: the adapter * @viid: the VI id * @naddr: the number of MAC addresses to allocate filters for (up to 7) * @addr: the MAC address(es) * @sleep_ok: call is allowed to sleep * * Frees the exact-match filter for each of the supplied addresses * * Returns a negative error number or the number of filters freed.
*/ int t4vf_free_mac_filt(struct adapter *adapter, unsignedint viid, unsignedint naddr, const u8 **addr, bool sleep_ok)
{ int offset, ret = 0; struct fw_vi_mac_cmd cmd; unsignedint nfilters = 0; unsignedint max_naddr = adapter->params.arch.mps_tcam_size; unsignedint rem = naddr;
for (i = 0, p = cmd.u.exact; i < (int)fw_naddr; i++, p++) {
p->valid_to_idx = cpu_to_be16(
FW_VI_MAC_CMD_VALID_F |
FW_VI_MAC_CMD_IDX_V(FW_VI_MAC_MAC_BASED_FREE));
memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
}
ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &cmd,
sleep_ok); if (ret) break;
for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
u16 index = FW_VI_MAC_CMD_IDX_G(
be16_to_cpu(p->valid_to_idx));
if (index < max_naddr)
nfilters++;
}
offset += fw_naddr;
rem -= fw_naddr;
}
if (ret == 0)
ret = nfilters; return ret;
}
/** * t4vf_change_mac - modifies the exact-match filter for a MAC address * @adapter: the adapter * @viid: the Virtual Interface ID * @idx: index of existing filter for old value of MAC address, or -1 * @addr: the new MAC address value * @persist: if idx < 0, the new MAC allocation should be persistent * * Modifies an exact-match filter and sets it to the new MAC address. * Note that in general it is not possible to modify the value of a given * filter so the generic way to modify an address filter is to free the * one being used by the old address value and allocate a new filter for * the new address value. @idx can be -1 if the address is a new * addition. * * Returns a negative error number or the index of the filter with the new * MAC value.
*/ int t4vf_change_mac(struct adapter *adapter, unsignedint viid, int idx, const u8 *addr, bool persist)
{ int ret; struct fw_vi_mac_cmd cmd, rpl; struct fw_vi_mac_exact *p = &cmd.u.exact[0];
size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
u.exact[1]), 16); unsignedint max_mac_addr = adapter->params.arch.mps_tcam_size;
/* * If this is a new allocation, determine whether it should be * persistent (across a "freemacs" operation) or not.
*/ if (idx < 0)
idx = persist ? FW_VI_MAC_ADD_PERSIST_MAC : FW_VI_MAC_ADD_MAC;
ret = t4vf_wr_mbox(adapter, &cmd, sizeof(cmd), &rpl); if (ret == 0) {
p = &rpl.u.exact[0];
ret = FW_VI_MAC_CMD_IDX_G(be16_to_cpu(p->valid_to_idx)); if (ret >= max_mac_addr)
ret = -ENOMEM;
} return ret;
}
/** * t4vf_set_addr_hash - program the MAC inexact-match hash filter * @adapter: the adapter * @viid: the Virtual Interface Identifier * @ucast: whether the hash filter should also match unicast addresses * @vec: the value to be written to the hash filter * @sleep_ok: call is allowed to sleep * * Sets the 64-bit inexact-match hash filter for a virtual interface.
*/ int t4vf_set_addr_hash(struct adapter *adapter, unsignedint viid, bool ucast, u64 vec, bool sleep_ok)
{ struct fw_vi_mac_cmd cmd;
size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
u.exact[0]), 16);
/** * t4vf_get_port_stats - collect "port" statistics * @adapter: the adapter * @pidx: the port index * @s: the stats structure to fill * * Collect statistics for the "port"'s Virtual Interface.
*/ int t4vf_get_port_stats(struct adapter *adapter, int pidx, struct t4vf_port_stats *s)
{ struct port_info *pi = adap2pinfo(adapter, pidx); struct fw_vi_stats_vf fwstats; unsignedint rem = VI_VF_NUM_STATS;
__be64 *fwsp = (__be64 *)&fwstats;
/* * Grab the Virtual Interface statistics a chunk at a time via mailbox * commands. We could use a Work Request and get all of them at once * but that's an asynchronous interface which is awkward to use.
*/ while (rem) { unsignedint ix = VI_VF_NUM_STATS - rem; unsignedint nstats = min(6U, rem); struct fw_vi_stats_cmd cmd, rpl;
size_t len = (offsetof(struct fw_vi_stats_cmd, u) + sizeof(struct fw_vi_stats_ctl));
size_t len16 = DIV_ROUND_UP(len, 16); int ret;
/** * t4vf_iq_free - free an ingress queue and its free lists * @adapter: the adapter * @iqtype: the ingress queue type (FW_IQ_TYPE_FL_INT_CAP, etc.) * @iqid: ingress queue ID * @fl0id: FL0 queue ID or 0xffff if no attached FL0 * @fl1id: FL1 queue ID or 0xffff if no attached FL1 * * Frees an ingress queue and its associated free lists, if any.
*/ int t4vf_iq_free(struct adapter *adapter, unsignedint iqtype, unsignedint iqid, unsignedint fl0id, unsignedint fl1id)
{ struct fw_iq_cmd cmd;
/** * t4vf_link_down_rc_str - return a string for a Link Down Reason Code * @link_down_rc: Link Down Reason Code * * Returns a string representation of the Link Down Reason Code.
*/ staticconstchar *t4vf_link_down_rc_str(unsignedchar link_down_rc)
{ staticconstchar * const reason[] = { "Link Down", "Remote Fault", "Auto-negotiation Failure", "Reserved", "Insufficient Airflow", "Unable To Determine Reason", "No RX Signal Detected", "Reserved",
};
if (link_down_rc >= ARRAY_SIZE(reason)) return"Bad Reason Code";
return reason[link_down_rc];
}
/** * t4vf_handle_get_port_info - process a FW reply message * @pi: the port info * @cmd: start of the FW message * * Processes a GET_PORT_INFO FW reply message.
*/ staticvoid t4vf_handle_get_port_info(struct port_info *pi, conststruct fw_port_cmd *cmd)
{
fw_port_cap32_t pcaps, acaps, lpacaps, linkattr; struct link_config *lc = &pi->link_cfg; struct adapter *adapter = pi->adapter; unsignedint speed, fc, fec, adv_fc; enum fw_port_module_type mod_type; int action, link_ok, linkdnrc; enum fw_port_type port_type;
/* Extract the various fields from the Port Information message. */
action = FW_PORT_CMD_ACTION_G(be32_to_cpu(cmd->action_to_len16)); switch (action) { case FW_PORT_ACTION_GET_PORT_INFO: {
u32 lstatus = be32_to_cpu(cmd->u.info.lstatus_to_modtype);
/* Unfortunately the format of the Link Status in the old * 16-bit Port Information message isn't the same as the * 16-bit Port Capabilities bitfield used everywhere else ...
*/
linkattr = 0; if (lstatus & FW_PORT_CMD_RXPAUSE_F)
linkattr |= FW_PORT_CAP32_FC_RX; if (lstatus & FW_PORT_CMD_TXPAUSE_F)
linkattr |= FW_PORT_CAP32_FC_TX; if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_100M))
linkattr |= FW_PORT_CAP32_SPEED_100M; if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_1G))
linkattr |= FW_PORT_CAP32_SPEED_1G; if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_10G))
linkattr |= FW_PORT_CAP32_SPEED_10G; if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_25G))
linkattr |= FW_PORT_CAP32_SPEED_25G; if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_40G))
linkattr |= FW_PORT_CAP32_SPEED_40G; if (lstatus & FW_PORT_CMD_LSPEED_V(FW_PORT_CAP_SPEED_100G))
linkattr |= FW_PORT_CAP32_SPEED_100G;
break;
}
case FW_PORT_ACTION_GET_PORT_INFO32: {
u32 lstatus32;
if (mod_type != pi->mod_type) { /* When a new Transceiver Module is inserted, the Firmware * will examine any Forward Error Correction parameters * present in the Transceiver Module i2c EPROM and determine * the supported and recommended FEC settings from those * based on IEEE 802.3 standards. We always record the * IEEE 802.3 recommended "automatic" settings.
*/
lc->auto_fec = fec;
/* Some versions of the early T6 Firmware "cheated" when * handling different Transceiver Modules by changing the * underlaying Port Type reported to the Host Drivers. As * such we need to capture whatever Port Type the Firmware * sends us and record it in case it's different from what we * were told earlier. Unfortunately, since Firmware is * forever, we'll need to keep this code here forever, but in * later T6 Firmware it should just be an assignment of the * same value already recorded.
*/
pi->port_type = port_type;
/* If we're not physically capable of Auto-Negotiation, note * this as Auto-Negotiation disabled. Otherwise, we track * what Auto-Negotiation settings we have. Note parallel * structure in init_link_config().
*/ if (!(lc->pcaps & FW_PORT_CAP32_ANEG)) {
lc->autoneg = AUTONEG_DISABLE;
} elseif (lc->acaps & FW_PORT_CAP32_ANEG) {
lc->autoneg = AUTONEG_ENABLE;
} else { /* When Autoneg is disabled, user needs to set * single speed. * Similar to cxgb4_ethtool.c: set_link_ksettings
*/
lc->acaps = 0;
lc->speed_caps = fwcap_to_speed(acaps);
lc->autoneg = AUTONEG_DISABLE;
}
/** * t4vf_update_port_info - retrieve and update port information if changed * @pi: the port_info * * We issue a Get Port Information Command to the Firmware and, if
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