};
#define FW_FNAME "cxgb4/t4fw.bin"
+#define FW_CFNAME "cxgb4/t4-config.txt"
MODULE_DESCRIPTION(DRV_DESC);
MODULE_AUTHOR("Chelsio Communications");
MODULE_DEVICE_TABLE(pci, cxgb4_pci_tbl);
MODULE_FIRMWARE(FW_FNAME);
+/*
+ * Normally we're willing to become the firmware's Master PF but will be happy
+ * if another PF has already become the Master and initialized the adapter.
+ * Setting "force_init" will cause this driver to forcibly establish itself as
+ * the Master PF and initialize the adapter.
+ */
+static uint force_init;
+
+module_param(force_init, uint, 0644);
+MODULE_PARM_DESC(force_init, "Forcibly become Master PF and initialize adapter");
+
static int dflt_msg_enable = DFLT_MSG_ENABLE;
module_param(dflt_msg_enable, int, 0644);
MODULE_PARM_DESC(intr_cnt,
"thresholds 1..3 for queue interrupt packet counters");
+/*
+ * Normally we tell the chip to deliver Ingress Packets into our DMA buffers
+ * offset by 2 bytes in order to have the IP headers line up on 4-byte
+ * boundaries. This is a requirement for many architectures which will throw
+ * a machine check fault if an attempt is made to access one of the 4-byte IP
+ * header fields on a non-4-byte boundary. And it's a major performance issue
+ * even on some architectures which allow it like some implementations of the
+ * x86 ISA. However, some architectures don't mind this and for some very
+ * edge-case performance sensitive applications (like forwarding large volumes
+ * of small packets), setting this DMA offset to 0 will decrease the number of
+ * PCI-E Bus transfers enough to measurably affect performance.
+ */
+static int rx_dma_offset = 2;
+
static bool vf_acls;
#ifdef CONFIG_PCI_IOV
t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 2),
(bar0 + MEMWIN2_BASE) | BIR(0) |
WINDOW(ilog2(MEMWIN2_APERTURE) - 10));
+}
+
+static void setup_memwin_rdma(struct adapter *adap)
+{
if (adap->vres.ocq.size) {
unsigned int start, sz_kb;
/*
* Phase 0 of initialization: contact FW, obtain config, perform basic init.
+ *
+ * If the firmware we're dealing with has Configuration File support, then
+ * we use that to perform all configuration
+ */
+
+/*
+ * Tweak configuration based on module parameters, etc. Most of these have
+ * defaults assigned to them by Firmware Configuration Files (if we're using
+ * them) but need to be explicitly set if we're using hard-coded
+ * initialization. But even in the case of using Firmware Configuration
+ * Files, we'd like to expose the ability to change these via module
+ * parameters so these are essentially common tweaks/settings for
+ * Configuration Files and hard-coded initialization ...
+ */
+static int adap_init0_tweaks(struct adapter *adapter)
+{
+ /*
+ * Fix up various Host-Dependent Parameters like Page Size, Cache
+ * Line Size, etc. The firmware default is for a 4KB Page Size and
+ * 64B Cache Line Size ...
+ */
+ t4_fixup_host_params(adapter, PAGE_SIZE, L1_CACHE_BYTES);
+
+ /*
+ * Process module parameters which affect early initialization.
+ */
+ if (rx_dma_offset != 2 && rx_dma_offset != 0) {
+ dev_err(&adapter->pdev->dev,
+ "Ignoring illegal rx_dma_offset=%d, using 2\n",
+ rx_dma_offset);
+ rx_dma_offset = 2;
+ }
+ t4_set_reg_field(adapter, SGE_CONTROL,
+ PKTSHIFT_MASK,
+ PKTSHIFT(rx_dma_offset));
+
+ /*
+ * Don't include the "IP Pseudo Header" in CPL_RX_PKT checksums: Linux
+ * adds the pseudo header itself.
+ */
+ t4_tp_wr_bits_indirect(adapter, TP_INGRESS_CONFIG,
+ CSUM_HAS_PSEUDO_HDR, 0);
+
+ return 0;
+}
+
+/*
+ * Attempt to initialize the adapter via a Firmware Configuration File.
+ */
+static int adap_init0_config(struct adapter *adapter, int reset)
+{
+ struct fw_caps_config_cmd caps_cmd;
+ const struct firmware *cf;
+ unsigned long mtype = 0, maddr = 0;
+ u32 finiver, finicsum, cfcsum;
+ int ret, using_flash;
+
+ /*
+ * Reset device if necessary.
+ */
+ if (reset) {
+ ret = t4_fw_reset(adapter, adapter->mbox,
+ PIORSTMODE | PIORST);
+ if (ret < 0)
+ goto bye;
+ }
+
+ /*
+ * If we have a T4 configuration file under /lib/firmware/cxgb4/,
+ * then use that. Otherwise, use the configuration file stored
+ * in the adapter flash ...
+ */
+ ret = request_firmware(&cf, FW_CFNAME, adapter->pdev_dev);
+ if (ret < 0) {
+ using_flash = 1;
+ mtype = FW_MEMTYPE_CF_FLASH;
+ maddr = t4_flash_cfg_addr(adapter);
+ } else {
+ u32 params[7], val[7];
+
+ using_flash = 0;
+ if (cf->size >= FLASH_CFG_MAX_SIZE)
+ ret = -ENOMEM;
+ else {
+ params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
+ FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CF));
+ ret = t4_query_params(adapter, adapter->mbox,
+ adapter->fn, 0, 1, params, val);
+ if (ret == 0) {
+ /*
+ * For t4_memory_write() below addresses and
+ * sizes have to be in terms of multiples of 4
+ * bytes. So, if the Configuration File isn't
+ * a multiple of 4 bytes in length we'll have
+ * to write that out separately since we can't
+ * guarantee that the bytes following the
+ * residual byte in the buffer returned by
+ * request_firmware() are zeroed out ...
+ */
+ size_t resid = cf->size & 0x3;
+ size_t size = cf->size & ~0x3;
+ __be32 *data = (__be32 *)cf->data;
+
+ mtype = FW_PARAMS_PARAM_Y_GET(val[0]);
+ maddr = FW_PARAMS_PARAM_Z_GET(val[0]) << 16;
+
+ ret = t4_memory_write(adapter, mtype, maddr,
+ size, data);
+ if (ret == 0 && resid != 0) {
+ union {
+ __be32 word;
+ char buf[4];
+ } last;
+ int i;
+
+ last.word = data[size >> 2];
+ for (i = resid; i < 4; i++)
+ last.buf[i] = 0;
+ ret = t4_memory_write(adapter, mtype,
+ maddr + size,
+ 4, &last.word);
+ }
+ }
+ }
+
+ release_firmware(cf);
+ if (ret)
+ goto bye;
+ }
+
+ /*
+ * Issue a Capability Configuration command to the firmware to get it
+ * to parse the Configuration File. We don't use t4_fw_config_file()
+ * because we want the ability to modify various features after we've
+ * processed the configuration file ...
+ */
+ memset(&caps_cmd, 0, sizeof(caps_cmd));
+ caps_cmd.op_to_write =
+ htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
+ FW_CMD_REQUEST |
+ FW_CMD_READ);
+ caps_cmd.retval_len16 =
+ htonl(FW_CAPS_CONFIG_CMD_CFVALID |
+ FW_CAPS_CONFIG_CMD_MEMTYPE_CF(mtype) |
+ FW_CAPS_CONFIG_CMD_MEMADDR64K_CF(maddr >> 16) |
+ FW_LEN16(caps_cmd));
+ ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
+ &caps_cmd);
+ if (ret < 0)
+ goto bye;
+
+ finiver = ntohl(caps_cmd.finiver);
+ finicsum = ntohl(caps_cmd.finicsum);
+ cfcsum = ntohl(caps_cmd.cfcsum);
+ if (finicsum != cfcsum)
+ dev_warn(adapter->pdev_dev, "Configuration File checksum "\
+ "mismatch: [fini] csum=%#x, computed csum=%#x\n",
+ finicsum, cfcsum);
+
+ /*
+ * If we're a pure NIC driver then disable all offloading facilities.
+ * This will allow the firmware to optimize aspects of the hardware
+ * configuration which will result in improved performance.
+ */
+ caps_cmd.ofldcaps = 0;
+ caps_cmd.iscsicaps = 0;
+ caps_cmd.rdmacaps = 0;
+ caps_cmd.fcoecaps = 0;
+
+ /*
+ * And now tell the firmware to use the configuration we just loaded.
+ */
+ caps_cmd.op_to_write =
+ htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
+ FW_CMD_REQUEST |
+ FW_CMD_WRITE);
+ caps_cmd.retval_len16 = htonl(FW_LEN16(caps_cmd));
+ ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
+ NULL);
+ if (ret < 0)
+ goto bye;
+
+ /*
+ * Tweak configuration based on system architecture, module
+ * parameters, etc.
+ */
+ ret = adap_init0_tweaks(adapter);
+ if (ret < 0)
+ goto bye;
+
+ /*
+ * And finally tell the firmware to initialize itself using the
+ * parameters from the Configuration File.
+ */
+ ret = t4_fw_initialize(adapter, adapter->mbox);
+ if (ret < 0)
+ goto bye;
+
+ /*
+ * Return successfully and note that we're operating with parameters
+ * not supplied by the driver, rather than from hard-wired
+ * initialization constants burried in the driver.
+ */
+ adapter->flags |= USING_SOFT_PARAMS;
+ dev_info(adapter->pdev_dev, "Successfully configured using Firmware "\
+ "Configuration File %s, version %#x, computed checksum %#x\n",
+ (using_flash
+ ? "in device FLASH"
+ : "/lib/firmware/" FW_CFNAME),
+ finiver, cfcsum);
+ return 0;
+
+ /*
+ * Something bad happened. Return the error ... (If the "error"
+ * is that there's no Configuration File on the adapter we don't
+ * want to issue a warning since this is fairly common.)
+ */
+bye:
+ if (ret != -ENOENT)
+ dev_warn(adapter->pdev_dev, "Configuration file error %d\n",
+ -ret);
+ return ret;
+}
+
+/*
+ * Phase 0 of initialization: contact FW, obtain config, perform basic init.
*/
static int adap_init0(struct adapter *adap)
{
u32 v, port_vec;
enum dev_state state;
u32 params[7], val[7];
- struct fw_caps_config_cmd c;
+ int reset = 1, j;
- ret = t4_check_fw_version(adap);
- if (ret == -EINVAL || ret > 0) {
- if (upgrade_fw(adap) >= 0) /* recache FW version */
- ret = t4_check_fw_version(adap);
- }
- if (ret < 0)
- return ret;
-
- /* contact FW, request master */
- ret = t4_fw_hello(adap, adap->fn, adap->fn, MASTER_MUST, &state);
+ /*
+ * Contact FW, advertising Master capability (and potentially forcing
+ * ourselves as the Master PF if our module parameter force_init is
+ * set).
+ */
+ ret = t4_fw_hello(adap, adap->mbox, adap->fn,
+ force_init ? MASTER_MUST : MASTER_MAY,
+ &state);
if (ret < 0) {
dev_err(adap->pdev_dev, "could not connect to FW, error %d\n",
ret);
return ret;
}
+ if (ret == adap->mbox)
+ adap->flags |= MASTER_PF;
+ if (force_init && state == DEV_STATE_INIT)
+ state = DEV_STATE_UNINIT;
- /* reset device */
- ret = t4_fw_reset(adap, adap->fn, PIORSTMODE | PIORST);
- if (ret < 0)
- goto bye;
-
- for (v = 0; v < SGE_NTIMERS - 1; v++)
- adap->sge.timer_val[v] = min(intr_holdoff[v], MAX_SGE_TIMERVAL);
- adap->sge.timer_val[SGE_NTIMERS - 1] = MAX_SGE_TIMERVAL;
- adap->sge.counter_val[0] = 1;
- for (v = 1; v < SGE_NCOUNTERS; v++)
- adap->sge.counter_val[v] = min(intr_cnt[v - 1],
- THRESHOLD_3_MASK);
-#define FW_PARAM_DEV(param) \
- (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \
- FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param))
+ /*
+ * If we're the Master PF Driver and the device is uninitialized,
+ * then let's consider upgrading the firmware ... (We always want
+ * to check the firmware version number in order to A. get it for
+ * later reporting and B. to warn if the currently loaded firmware
+ * is excessively mismatched relative to the driver.)
+ */
+ ret = t4_check_fw_version(adap);
+ if ((adap->flags & MASTER_PF) && state != DEV_STATE_INIT) {
+ if (ret == -EINVAL || ret > 0) {
+ if (upgrade_fw(adap) >= 0) {
+ /*
+ * Note that the chip was reset as part of the
+ * firmware upgrade so we don't reset it again
+ * below and grab the new firmware version.
+ */
+ reset = 0;
+ ret = t4_check_fw_version(adap);
+ }
+ }
+ if (ret < 0)
+ return ret;
+ }
- params[0] = FW_PARAM_DEV(CCLK);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 1, params, val);
+ /*
+ * Grab VPD parameters. This should be done after we establish a
+ * connection to the firmware since some of the VPD parameters
+ * (notably the Core Clock frequency) are retrieved via requests to
+ * the firmware. On the other hand, we need these fairly early on
+ * so we do this right after getting ahold of the firmware.
+ */
+ ret = get_vpd_params(adap, &adap->params.vpd);
if (ret < 0)
goto bye;
- adap->params.vpd.cclk = val[0];
- ret = adap_init1(adap, &c);
+ /*
+ * Find out what ports are available to us.
+ */
+ v =
+ FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
+ FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_PORTVEC);
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 1, &v, &port_vec);
if (ret < 0)
goto bye;
+ adap->params.nports = hweight32(port_vec);
+ adap->params.portvec = port_vec;
+
+ /*
+ * If the firmware is initialized already (and we're not forcing a
+ * master initialization), note that we're living with existing
+ * adapter parameters. Otherwise, it's time to try initializing the
+ * adapter ...
+ */
+ if (state == DEV_STATE_INIT) {
+ dev_info(adap->pdev_dev, "Coming up as %s: "\
+ "Adapter already initialized\n",
+ adap->flags & MASTER_PF ? "MASTER" : "SLAVE");
+ adap->flags |= USING_SOFT_PARAMS;
+ } else {
+ dev_info(adap->pdev_dev, "Coming up as MASTER: "\
+ "Initializing adapter\n");
+ /*
+ * Find out whether we're dealing with a version of
+ * the firmware which has configuration file support.
+ */
+ params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
+ FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CF));
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 1,
+ params, val);
+
+ /*
+ * If the firmware doesn't support Configuration
+ * Files warn user and exit,
+ */
+ if (ret < 0)
+ dev_warn(adap->pdev_dev, "Firmware doesn't support "\
+ "configuration file.\n");
+ else {
+ /*
+ * The firmware provides us with a memory
+ * buffer where we can load a Configuration
+ * File from the host if we want to override
+ * the Configuration File in flash.
+ */
+
+ ret = adap_init0_config(adap, reset);
+ if (ret == -ENOENT) {
+ dev_info(adap->pdev_dev,
+ "No Configuration File present "
+ "on adapter.\n");
+ }
+ }
+ if (ret < 0) {
+ dev_err(adap->pdev_dev,
+ "could not initialize adapter, error %d\n",
+ -ret);
+ goto bye;
+ }
+ }
+
+ /*
+ * If we're living with non-hard-coded parameters (either from a
+ * Firmware Configuration File or values programmed by a different PF
+ * Driver), give the SGE code a chance to pull in anything that it
+ * needs ... Note that this must be called after we retrieve our VPD
+ * parameters in order to know how to convert core ticks to seconds.
+ */
+ if (adap->flags & USING_SOFT_PARAMS) {
+ ret = t4_sge_init(adap);
+ if (ret < 0)
+ goto bye;
+ }
+
+ /*
+ * Grab some of our basic fundamental operating parameters.
+ */
+#define FW_PARAM_DEV(param) \
+ (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \
+ FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param))
+
#define FW_PARAM_PFVF(param) \
- (FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \
- FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param) | \
- FW_PARAMS_PARAM_Y(adap->fn))
+ FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \
+ FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param)| \
+ FW_PARAMS_PARAM_Y(0) | \
+ FW_PARAMS_PARAM_Z(0)
- params[0] = FW_PARAM_DEV(PORTVEC);
+ params[0] = FW_PARAM_PFVF(EQ_START);
params[1] = FW_PARAM_PFVF(L2T_START);
params[2] = FW_PARAM_PFVF(L2T_END);
params[3] = FW_PARAM_PFVF(FILTER_START);
params[4] = FW_PARAM_PFVF(FILTER_END);
params[5] = FW_PARAM_PFVF(IQFLINT_START);
- params[6] = FW_PARAM_PFVF(EQ_START);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 7, params, val);
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 6, params, val);
if (ret < 0)
goto bye;
- port_vec = val[0];
+ adap->sge.egr_start = val[0];
+ adap->l2t_start = val[1];
+ adap->l2t_end = val[2];
adap->tids.ftid_base = val[3];
adap->tids.nftids = val[4] - val[3] + 1;
adap->sge.ingr_start = val[5];
- adap->sge.egr_start = val[6];
- if (c.ofldcaps) {
+ /* query params related to active filter region */
+ params[0] = FW_PARAM_PFVF(ACTIVE_FILTER_START);
+ params[1] = FW_PARAM_PFVF(ACTIVE_FILTER_END);
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 2, params, val);
+ /* If Active filter size is set we enable establishing
+ * offload connection through firmware work request
+ */
+ if ((val[0] != val[1]) && (ret >= 0)) {
+ adap->flags |= FW_OFLD_CONN;
+ adap->tids.aftid_base = val[0];
+ adap->tids.aftid_end = val[1];
+ }
+
+#ifdef CONFIG_CHELSIO_T4_OFFLOAD
+ /*
+ * Get device capabilities so we can determine what resources we need
+ * to manage.
+ */
+ memset(&caps_cmd, 0, sizeof(caps_cmd));
+ caps_cmd.op_to_write = htonl(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
+ F_FW_CMD_REQUEST | F_FW_CMD_READ);
+ caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
+ ret = t4_wr_mbox(adap, adap->mbox, &caps_cmd, sizeof(caps_cmd),
+ &caps_cmd);
+ if (ret < 0)
+ goto bye;
+
+ if (caps_cmd.toecaps) {
/* query offload-related parameters */
params[0] = FW_PARAM_DEV(NTID);
params[1] = FW_PARAM_PFVF(SERVER_START);
params[3] = FW_PARAM_PFVF(TDDP_START);
params[4] = FW_PARAM_PFVF(TDDP_END);
params[5] = FW_PARAM_DEV(FLOWC_BUFFIFO_SZ);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
- val);
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 6,
+ params, val);
if (ret < 0)
goto bye;
adap->tids.ntids = val[0];
adap->tids.natids = min(adap->tids.ntids / 2, MAX_ATIDS);
adap->tids.stid_base = val[1];
adap->tids.nstids = val[2] - val[1] + 1;
+ /*
+ * Setup server filter region. Divide the availble filter
+ * region into two parts. Regular filters get 1/3rd and server
+ * filters get 2/3rd part. This is only enabled if workarond
+ * path is enabled.
+ * 1. For regular filters.
+ * 2. Server filter: This are special filters which are used
+ * to redirect SYN packets to offload queue.
+ */
+ if (adap->flags & FW_OFLD_CONN && !is_bypass(adap)) {
+ adap->tids.sftid_base = adap->tids.ftid_base +
+ DIV_ROUND_UP(adap->tids.nftids, 3);
+ adap->tids.nsftids = adap->tids.nftids -
+ DIV_ROUND_UP(adap->tids.nftids, 3);
+ adap->tids.nftids = adap->tids.sftid_base -
+ adap->tids.ftid_base;
+ }
adap->vres.ddp.start = val[3];
adap->vres.ddp.size = val[4] - val[3] + 1;
adap->params.ofldq_wr_cred = val[5];
+
+ params[0] = FW_PARAM_PFVF(ETHOFLD_START);
+ params[1] = FW_PARAM_PFVF(ETHOFLD_END);
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 2,
+ params, val);
+ if ((val[0] != val[1]) && (ret >= 0)) {
+ adap->tids.uotid_base = val[0];
+ adap->tids.nuotids = val[1] - val[0] + 1;
+ }
+
adap->params.offload = 1;
}
- if (c.rdmacaps) {
+ if (caps_cmd.rdmacaps) {
params[0] = FW_PARAM_PFVF(STAG_START);
params[1] = FW_PARAM_PFVF(STAG_END);
params[2] = FW_PARAM_PFVF(RQ_START);
params[3] = FW_PARAM_PFVF(RQ_END);
params[4] = FW_PARAM_PFVF(PBL_START);
params[5] = FW_PARAM_PFVF(PBL_END);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
- val);
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 6,
+ params, val);
if (ret < 0)
goto bye;
adap->vres.stag.start = val[0];
params[3] = FW_PARAM_PFVF(CQ_END);
params[4] = FW_PARAM_PFVF(OCQ_START);
params[5] = FW_PARAM_PFVF(OCQ_END);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
- val);
+ ret = t4_query_params(adap, 0, 0, 0, 6, params, val);
if (ret < 0)
goto bye;
adap->vres.qp.start = val[0];
adap->vres.ocq.start = val[4];
adap->vres.ocq.size = val[5] - val[4] + 1;
}
- if (c.iscsicaps) {
+ if (caps_cmd.iscsicaps) {
params[0] = FW_PARAM_PFVF(ISCSI_START);
params[1] = FW_PARAM_PFVF(ISCSI_END);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 2, params,
- val);
+ ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 2,
+ params, val);
if (ret < 0)
goto bye;
adap->vres.iscsi.start = val[0];
}
#undef FW_PARAM_PFVF
#undef FW_PARAM_DEV
+#endif /* CONFIG_CHELSIO_T4_OFFLOAD */
- adap->params.nports = hweight32(port_vec);
- adap->params.portvec = port_vec;
- adap->flags |= FW_OK;
-
- /* These are finalized by FW initialization, load their values now */
+ /*
+ * These are finalized by FW initialization, load their values now.
+ */
v = t4_read_reg(adap, TP_TIMER_RESOLUTION);
adap->params.tp.tre = TIMERRESOLUTION_GET(v);
+ adap->params.tp.dack_re = DELAYEDACKRESOLUTION_GET(v);
t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
adap->params.b_wnd);
-#ifdef CONFIG_PCI_IOV
- /*
- * Provision resource limits for Virtual Functions. We currently
- * grant them all the same static resource limits except for the Port
- * Access Rights Mask which we're assigning based on the PF. All of
- * the static provisioning stuff for both the PF and VF really needs
- * to be managed in a persistent manner for each device which the
- * firmware controls.
- */
- {
- int pf, vf;
-
- for (pf = 0; pf < ARRAY_SIZE(num_vf); pf++) {
- if (num_vf[pf] <= 0)
- continue;
-
- /* VF numbering starts at 1! */
- for (vf = 1; vf <= num_vf[pf]; vf++) {
- ret = t4_cfg_pfvf(adap, adap->fn, pf, vf,
- VFRES_NEQ, VFRES_NETHCTRL,
- VFRES_NIQFLINT, VFRES_NIQ,
- VFRES_TC, VFRES_NVI,
- FW_PFVF_CMD_CMASK_MASK,
- pfvfres_pmask(adap, pf, vf),
- VFRES_NEXACTF,
- VFRES_R_CAPS, VFRES_WX_CAPS);
- if (ret < 0)
- dev_warn(adap->pdev_dev, "failed to "
- "provision pf/vf=%d/%d; "
- "err=%d\n", pf, vf, ret);
- }
- }
- }
-#endif
+ /* MODQ_REQ_MAP defaults to setting queues 0-3 to chan 0-3 */
+ for (j = 0; j < NCHAN; j++)
+ adap->params.tp.tx_modq[j] = j;
- setup_memwin(adap);
+ adap->flags |= FW_OK;
return 0;
/*
- * If a command timed out or failed with EIO FW does not operate within
- * its spec or something catastrophic happened to HW/FW, stop issuing
- * commands.
+ * Something bad happened. If a command timed out or failed with EIO
+ * FW does not operate within its spec or something catastrophic
+ * happened to HW/FW, stop issuing commands.
*/
-bye: if (ret != -ETIMEDOUT && ret != -EIO)
- t4_fw_bye(adap, adap->fn);
+bye:
+ if (ret != -ETIMEDOUT && ret != -EIO)
+ t4_fw_bye(adap, adap->mbox);
return ret;
}
err = t4_prep_adapter(adapter);
if (err)
goto out_unmap_bar;
+ setup_memwin(adapter);
err = adap_init0(adapter);
+ setup_memwin_rdma(adapter);
if (err)
goto out_unmap_bar;
{
struct adapter *adapter = pci_get_drvdata(pdev);
+#ifdef CONFIG_PCI_IOV
pci_disable_sriov(pdev);
+#endif
+
if (adapter) {
int i;
*
* Reads card parameters stored in VPD EEPROM.
*/
-static int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
+int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
{
+ u32 cclk_param, cclk_val;
int i, ret;
int ec, sn;
u8 vpd[VPD_LEN], csum;
i = pci_vpd_info_field_size(vpd + sn - PCI_VPD_INFO_FLD_HDR_SIZE);
memcpy(p->sn, vpd + sn, min(i, SERNUM_LEN));
strim(p->sn);
+
+ /*
+ * Ask firmware for the Core Clock since it knows how to translate the
+ * Reference Clock ('V2') VPD field into a Core Clock value ...
+ */
+ cclk_param = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
+ FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CCLK));
+ ret = t4_query_params(adapter, adapter->mbox, 0, 0,
+ 1, &cclk_param, &cclk_val);
+ if (ret)
+ return ret;
+ p->cclk = cclk_val;
+
return 0;
}
}
/**
+ * t4_flash_cfg_addr - return the address of the flash configuration file
+ * @adapter: the adapter
+ *
+ * Return the address within the flash where the Firmware Configuration
+ * File is stored.
+ */
+unsigned int t4_flash_cfg_addr(struct adapter *adapter)
+{
+ if (adapter->params.sf_size == 0x100000)
+ return FLASH_FPGA_CFG_START;
+ else
+ return FLASH_CFG_START;
+}
+
+/**
+ * t4_load_cfg - download config file
+ * @adap: the adapter
+ * @cfg_data: the cfg text file to write
+ * @size: text file size
+ *
+ * Write the supplied config text file to the card's serial flash.
+ */
+int t4_load_cfg(struct adapter *adap, const u8 *cfg_data, unsigned int size)
+{
+ int ret, i, n;
+ unsigned int addr;
+ unsigned int flash_cfg_start_sec;
+ unsigned int sf_sec_size = adap->params.sf_size / adap->params.sf_nsec;
+
+ addr = t4_flash_cfg_addr(adap);
+ flash_cfg_start_sec = addr / SF_SEC_SIZE;
+
+ if (size > FLASH_CFG_MAX_SIZE) {
+ dev_err(adap->pdev_dev, "cfg file too large, max is %u bytes\n",
+ FLASH_CFG_MAX_SIZE);
+ return -EFBIG;
+ }
+
+ i = DIV_ROUND_UP(FLASH_CFG_MAX_SIZE, /* # of sectors spanned */
+ sf_sec_size);
+ ret = t4_flash_erase_sectors(adap, flash_cfg_start_sec,
+ flash_cfg_start_sec + i - 1);
+ /*
+ * If size == 0 then we're simply erasing the FLASH sectors associated
+ * with the on-adapter Firmware Configuration File.
+ */
+ if (ret || size == 0)
+ goto out;
+
+ /* this will write to the flash up to SF_PAGE_SIZE at a time */
+ for (i = 0; i < size; i += SF_PAGE_SIZE) {
+ if ((size - i) < SF_PAGE_SIZE)
+ n = size - i;
+ else
+ n = SF_PAGE_SIZE;
+ ret = t4_write_flash(adap, addr, n, cfg_data);
+ if (ret)
+ goto out;
+
+ addr += SF_PAGE_SIZE;
+ cfg_data += SF_PAGE_SIZE;
+ }
+
+out:
+ if (ret)
+ dev_err(adap->pdev_dev, "config file %s failed %d\n",
+ (size == 0 ? "clear" : "download"), ret);
+ return ret;
+}
+
+/**
* t4_load_fw - download firmware
* @adap: the adapter
* @fw_data: the firmware image to write
}
/**
+ * t4_tp_wr_bits_indirect - set/clear bits in an indirect TP register
+ * @adap: the adapter
+ * @addr: the indirect TP register address
+ * @mask: specifies the field within the register to modify
+ * @val: new value for the field
+ *
+ * Sets a field of an indirect TP register to the given value.
+ */
+void t4_tp_wr_bits_indirect(struct adapter *adap, unsigned int addr,
+ unsigned int mask, unsigned int val)
+{
+ t4_write_reg(adap, TP_PIO_ADDR, addr);
+ val |= t4_read_reg(adap, TP_PIO_DATA) & ~mask;
+ t4_write_reg(adap, TP_PIO_DATA, val);
+}
+
+/**
* init_cong_ctrl - initialize congestion control parameters
* @a: the alpha values for congestion control
* @b: the beta values for congestion control
struct fw_ldst_cmd c;
memset(&c, 0, sizeof(c));
- c.op_to_addrspace = htonl(V_FW_CMD_OP(FW_LDST_CMD) | F_FW_CMD_REQUEST |
- F_FW_CMD_WRITE |
- V_FW_LDST_CMD_ADDRSPACE(FW_LDST_ADDRSPC_FIRMWARE));
+ c.op_to_addrspace = htonl(FW_CMD_OP(FW_LDST_CMD) | FW_CMD_REQUEST |
+ FW_CMD_WRITE |
+ FW_LDST_CMD_ADDRSPACE(FW_LDST_ADDRSPC_FIRMWARE));
c.cycles_to_len16 = htonl(FW_LEN16(c));
c.u.addrval.addr = htonl(addr);
c.u.addrval.val = htonl(val);
}
/**
- * t4_fw_hello - establish communication with FW
- * @adap: the adapter
- * @mbox: mailbox to use for the FW command
- * @evt_mbox: mailbox to receive async FW events
- * @master: specifies the caller's willingness to be the device master
- * @state: returns the current device state
+ * t4_fw_hello - establish communication with FW
+ * @adap: the adapter
+ * @mbox: mailbox to use for the FW command
+ * @evt_mbox: mailbox to receive async FW events
+ * @master: specifies the caller's willingness to be the device master
+ * @state: returns the current device state (if non-NULL)
*
- * Issues a command to establish communication with FW.
+ * Issues a command to establish communication with FW. Returns either
+ * an error (negative integer) or the mailbox of the Master PF.
*/
int t4_fw_hello(struct adapter *adap, unsigned int mbox, unsigned int evt_mbox,
enum dev_master master, enum dev_state *state)
{
int ret;
struct fw_hello_cmd c;
+ u32 v;
+ unsigned int master_mbox;
+ int retries = FW_CMD_HELLO_RETRIES;
+retry:
+ memset(&c, 0, sizeof(c));
INIT_CMD(c, HELLO, WRITE);
c.err_to_mbasyncnot = htonl(
FW_HELLO_CMD_MASTERDIS(master == MASTER_CANT) |
FW_HELLO_CMD_MASTERFORCE(master == MASTER_MUST) |
- FW_HELLO_CMD_MBMASTER(master == MASTER_MUST ? mbox : 0xff) |
- FW_HELLO_CMD_MBASYNCNOT(evt_mbox));
+ FW_HELLO_CMD_MBMASTER(master == MASTER_MUST ? mbox :
+ FW_HELLO_CMD_MBMASTER_MASK) |
+ FW_HELLO_CMD_MBASYNCNOT(evt_mbox) |
+ FW_HELLO_CMD_STAGE(fw_hello_cmd_stage_os) |
+ FW_HELLO_CMD_CLEARINIT);
+ /*
+ * Issue the HELLO command to the firmware. If it's not successful
+ * but indicates that we got a "busy" or "timeout" condition, retry
+ * the HELLO until we exhaust our retry limit.
+ */
ret = t4_wr_mbox(adap, mbox, &c, sizeof(c), &c);
- if (ret == 0 && state) {
- u32 v = ntohl(c.err_to_mbasyncnot);
- if (v & FW_HELLO_CMD_INIT)
- *state = DEV_STATE_INIT;
- else if (v & FW_HELLO_CMD_ERR)
+ if (ret < 0) {
+ if ((ret == -EBUSY || ret == -ETIMEDOUT) && retries-- > 0)
+ goto retry;
+ return ret;
+ }
+
+ v = ntohl(c.err_to_mbasyncnot);
+ master_mbox = FW_HELLO_CMD_MBMASTER_GET(v);
+ if (state) {
+ if (v & FW_HELLO_CMD_ERR)
*state = DEV_STATE_ERR;
+ else if (v & FW_HELLO_CMD_INIT)
+ *state = DEV_STATE_INIT;
else
*state = DEV_STATE_UNINIT;
}
- return ret;
+
+ /*
+ * If we're not the Master PF then we need to wait around for the
+ * Master PF Driver to finish setting up the adapter.
+ *
+ * Note that we also do this wait if we're a non-Master-capable PF and
+ * there is no current Master PF; a Master PF may show up momentarily
+ * and we wouldn't want to fail pointlessly. (This can happen when an
+ * OS loads lots of different drivers rapidly at the same time). In
+ * this case, the Master PF returned by the firmware will be
+ * FW_PCIE_FW_MASTER_MASK so the test below will work ...
+ */
+ if ((v & (FW_HELLO_CMD_ERR|FW_HELLO_CMD_INIT)) == 0 &&
+ master_mbox != mbox) {
+ int waiting = FW_CMD_HELLO_TIMEOUT;
+
+ /*
+ * Wait for the firmware to either indicate an error or
+ * initialized state. If we see either of these we bail out
+ * and report the issue to the caller. If we exhaust the
+ * "hello timeout" and we haven't exhausted our retries, try
+ * again. Otherwise bail with a timeout error.
+ */
+ for (;;) {
+ u32 pcie_fw;
+
+ msleep(50);
+ waiting -= 50;
+
+ /*
+ * If neither Error nor Initialialized are indicated
+ * by the firmware keep waiting till we exaust our
+ * timeout ... and then retry if we haven't exhausted
+ * our retries ...
+ */
+ pcie_fw = t4_read_reg(adap, MA_PCIE_FW);
+ if (!(pcie_fw & (FW_PCIE_FW_ERR|FW_PCIE_FW_INIT))) {
+ if (waiting <= 0) {
+ if (retries-- > 0)
+ goto retry;
+
+ return -ETIMEDOUT;
+ }
+ continue;
+ }
+
+ /*
+ * We either have an Error or Initialized condition
+ * report errors preferentially.
+ */
+ if (state) {
+ if (pcie_fw & FW_PCIE_FW_ERR)
+ *state = DEV_STATE_ERR;
+ else if (pcie_fw & FW_PCIE_FW_INIT)
+ *state = DEV_STATE_INIT;
+ }
+
+ /*
+ * If we arrived before a Master PF was selected and
+ * there's not a valid Master PF, grab its identity
+ * for our caller.
+ */
+ if (master_mbox == FW_PCIE_FW_MASTER_MASK &&
+ (pcie_fw & FW_PCIE_FW_MASTER_VLD))
+ master_mbox = FW_PCIE_FW_MASTER_GET(pcie_fw);
+ break;
+ }
+ }
+
+ return master_mbox;
}
/**
}
/**
+ * t4_fw_config_file - setup an adapter via a Configuration File
+ * @adap: the adapter
+ * @mbox: mailbox to use for the FW command
+ * @mtype: the memory type where the Configuration File is located
+ * @maddr: the memory address where the Configuration File is located
+ * @finiver: return value for CF [fini] version
+ * @finicsum: return value for CF [fini] checksum
+ * @cfcsum: return value for CF computed checksum
+ *
+ * Issue a command to get the firmware to process the Configuration
+ * File located at the specified mtype/maddress. If the Configuration
+ * File is processed successfully and return value pointers are
+ * provided, the Configuration File "[fini] section version and
+ * checksum values will be returned along with the computed checksum.
+ * It's up to the caller to decide how it wants to respond to the
+ * checksums not matching but it recommended that a prominant warning
+ * be emitted in order to help people rapidly identify changed or
+ * corrupted Configuration Files.
+ *
+ * Also note that it's possible to modify things like "niccaps",
+ * "toecaps",etc. between processing the Configuration File and telling
+ * the firmware to use the new configuration. Callers which want to
+ * do this will need to "hand-roll" their own CAPS_CONFIGS commands for
+ * Configuration Files if they want to do this.
+ */
+int t4_fw_config_file(struct adapter *adap, unsigned int mbox,
+ unsigned int mtype, unsigned int maddr,
+ u32 *finiver, u32 *finicsum, u32 *cfcsum)
+{
+ struct fw_caps_config_cmd caps_cmd;
+ int ret;
+
+ /*
+ * Tell the firmware to process the indicated Configuration File.
+ * If there are no errors and the caller has provided return value
+ * pointers for the [fini] section version, checksum and computed
+ * checksum, pass those back to the caller.
+ */
+ memset(&caps_cmd, 0, sizeof(caps_cmd));
+ caps_cmd.op_to_write =
+ htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
+ FW_CMD_REQUEST |
+ FW_CMD_READ);
+ caps_cmd.retval_len16 =
+ htonl(FW_CAPS_CONFIG_CMD_CFVALID |
+ FW_CAPS_CONFIG_CMD_MEMTYPE_CF(mtype) |
+ FW_CAPS_CONFIG_CMD_MEMADDR64K_CF(maddr >> 16) |
+ FW_LEN16(caps_cmd));
+ ret = t4_wr_mbox(adap, mbox, &caps_cmd, sizeof(caps_cmd), &caps_cmd);
+ if (ret < 0)
+ return ret;
+
+ if (finiver)
+ *finiver = ntohl(caps_cmd.finiver);
+ if (finicsum)
+ *finicsum = ntohl(caps_cmd.finicsum);
+ if (cfcsum)
+ *cfcsum = ntohl(caps_cmd.cfcsum);
+
+ /*
+ * And now tell the firmware to use the configuration we just loaded.
+ */
+ caps_cmd.op_to_write =
+ htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
+ FW_CMD_REQUEST |
+ FW_CMD_WRITE);
+ caps_cmd.retval_len16 = htonl(FW_LEN16(caps_cmd));
+ return t4_wr_mbox(adap, mbox, &caps_cmd, sizeof(caps_cmd), NULL);
+}
+
+/**
+ * t4_fixup_host_params - fix up host-dependent parameters
+ * @adap: the adapter
+ * @page_size: the host's Base Page Size
+ * @cache_line_size: the host's Cache Line Size
+ *
+ * Various registers in T4 contain values which are dependent on the
+ * host's Base Page and Cache Line Sizes. This function will fix all of
+ * those registers with the appropriate values as passed in ...
+ */
+int t4_fixup_host_params(struct adapter *adap, unsigned int page_size,
+ unsigned int cache_line_size)
+{
+ unsigned int page_shift = fls(page_size) - 1;
+ unsigned int sge_hps = page_shift - 10;
+ unsigned int stat_len = cache_line_size > 64 ? 128 : 64;
+ unsigned int fl_align = cache_line_size < 32 ? 32 : cache_line_size;
+ unsigned int fl_align_log = fls(fl_align) - 1;
+
+ t4_write_reg(adap, SGE_HOST_PAGE_SIZE,
+ HOSTPAGESIZEPF0(sge_hps) |
+ HOSTPAGESIZEPF1(sge_hps) |
+ HOSTPAGESIZEPF2(sge_hps) |
+ HOSTPAGESIZEPF3(sge_hps) |
+ HOSTPAGESIZEPF4(sge_hps) |
+ HOSTPAGESIZEPF5(sge_hps) |
+ HOSTPAGESIZEPF6(sge_hps) |
+ HOSTPAGESIZEPF7(sge_hps));
+
+ t4_set_reg_field(adap, SGE_CONTROL,
+ INGPADBOUNDARY(INGPADBOUNDARY_MASK) |
+ EGRSTATUSPAGESIZE_MASK,
+ INGPADBOUNDARY(fl_align_log - 5) |
+ EGRSTATUSPAGESIZE(stat_len != 64));
+
+ /*
+ * Adjust various SGE Free List Host Buffer Sizes.
+ *
+ * This is something of a crock since we're using fixed indices into
+ * the array which are also known by the sge.c code and the T4
+ * Firmware Configuration File. We need to come up with a much better
+ * approach to managing this array. For now, the first four entries
+ * are:
+ *
+ * 0: Host Page Size
+ * 1: 64KB
+ * 2: Buffer size corresponding to 1500 byte MTU (unpacked mode)
+ * 3: Buffer size corresponding to 9000 byte MTU (unpacked mode)
+ *
+ * For the single-MTU buffers in unpacked mode we need to include
+ * space for the SGE Control Packet Shift, 14 byte Ethernet header,
+ * possible 4 byte VLAN tag, all rounded up to the next Ingress Packet
+ * Padding boundry. All of these are accommodated in the Factory
+ * Default Firmware Configuration File but we need to adjust it for
+ * this host's cache line size.
+ */
+ t4_write_reg(adap, SGE_FL_BUFFER_SIZE0, page_size);
+ t4_write_reg(adap, SGE_FL_BUFFER_SIZE2,
+ (t4_read_reg(adap, SGE_FL_BUFFER_SIZE2) + fl_align-1)
+ & ~(fl_align-1));
+ t4_write_reg(adap, SGE_FL_BUFFER_SIZE3,
+ (t4_read_reg(adap, SGE_FL_BUFFER_SIZE3) + fl_align-1)
+ & ~(fl_align-1));
+
+ t4_write_reg(adap, ULP_RX_TDDP_PSZ, HPZ0(page_shift - 12));
+
+ return 0;
+}
+
+/**
+ * t4_fw_initialize - ask FW to initialize the device
+ * @adap: the adapter
+ * @mbox: mailbox to use for the FW command
+ *
+ * Issues a command to FW to partially initialize the device. This
+ * performs initialization that generally doesn't depend on user input.
+ */
+int t4_fw_initialize(struct adapter *adap, unsigned int mbox)
+{
+ struct fw_initialize_cmd c;
+
+ memset(&c, 0, sizeof(c));
+ INIT_CMD(c, INITIALIZE, WRITE);
+ return t4_wr_mbox(adap, mbox, &c, sizeof(c), NULL);
+}
+
+/**
* t4_query_params - query FW or device parameters
* @adap: the adapter
* @mbox: mailbox to use for the FW command
return ret;
}
- ret = get_vpd_params(adapter, &adapter->params.vpd);
- if (ret < 0)
- return ret;
-
init_cong_ctrl(adapter->params.a_wnd, adapter->params.b_wnd);
/*
*/
adapter->params.nports = 1;
adapter->params.portvec = 1;
+ adapter->params.vpd.cclk = 50000;
return 0;
}
projects / profile / common / platform / kernel / linux-artik7.git / commitdiff