cxgb4: get on-chip queue info from FW and create a memory window for them
Dimitris Michailidis [Mon, 2 Aug 2010 13:19:19 +0000 (13:19 +0000)]
Get info about the availability of Tx on-chip queues from FW and if they
are supported set up a memory window for them.  iw_cxgb4 will be using them.
Move the existing window setup later in the init sequence, after we have
collected the new info.

Signed-off-by: Dimitris Michailidis <dm@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/cxgb4/cxgb4_main.c
drivers/net/cxgb4/cxgb4_uld.h
drivers/net/cxgb4/t4_regs.h
drivers/net/cxgb4/t4fw_api.h

index 0af6d67..47e8936 100644 (file)
@@ -2897,6 +2897,21 @@ static void setup_memwin(struct adapter *adap)
        t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 2),
                     (bar0 + MEMWIN2_BASE) | BIR(0) |
                     WINDOW(ilog2(MEMWIN2_APERTURE) - 10));
+       if (adap->vres.ocq.size) {
+               unsigned int start, sz_kb;
+
+               start = pci_resource_start(adap->pdev, 2) +
+                       OCQ_WIN_OFFSET(adap->pdev, &adap->vres);
+               sz_kb = roundup_pow_of_two(adap->vres.ocq.size) >> 10;
+               t4_write_reg(adap,
+                            PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 3),
+                            start | BIR(1) | WINDOW(ilog2(sz_kb)));
+               t4_write_reg(adap,
+                            PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, 3),
+                            adap->vres.ocq.start);
+               t4_read_reg(adap,
+                           PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, 3));
+       }
 }
 
 static int adap_init1(struct adapter *adap, struct fw_caps_config_cmd *c)
@@ -2954,7 +2969,6 @@ static int adap_init1(struct adapter *adap, struct fw_caps_config_cmd *c)
        t4_write_reg(adap, TP_PIO_ADDR, TP_INGRESS_CONFIG);
        v = t4_read_reg(adap, TP_PIO_DATA);
        t4_write_reg(adap, TP_PIO_DATA, v & ~CSUM_HAS_PSEUDO_HDR);
-       setup_memwin(adap);
        return 0;
 }
 
@@ -3073,13 +3087,17 @@ static int adap_init0(struct adapter *adap)
                params[1] = FW_PARAM_PFVF(SQRQ_END);
                params[2] = FW_PARAM_PFVF(CQ_START);
                params[3] = FW_PARAM_PFVF(CQ_END);
-               ret = t4_query_params(adap, 0, 0, 0, 4, params, val);
+               params[4] = FW_PARAM_PFVF(OCQ_START);
+               params[5] = FW_PARAM_PFVF(OCQ_END);
+               ret = t4_query_params(adap, 0, 0, 0, 6, params, val);
                if (ret < 0)
                        goto bye;
                adap->vres.qp.start = val[0];
                adap->vres.qp.size = val[1] - val[0] + 1;
                adap->vres.cq.start = val[2];
                adap->vres.cq.size = val[3] - val[2] + 1;
+               adap->vres.ocq.start = val[4];
+               adap->vres.ocq.size = val[5] - val[4] + 1;
        }
        if (c.iscsicaps) {
                params[0] = FW_PARAM_PFVF(ISCSI_START);
@@ -3139,6 +3157,7 @@ static int adap_init0(struct adapter *adap)
        }
 #endif
 
+       setup_memwin(adap);
        return 0;
 
        /*
@@ -3221,6 +3240,7 @@ static pci_ers_result_t eeh_slot_reset(struct pci_dev *pdev)
 
        t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
                     adap->params.b_wnd);
+       setup_memwin(adap);
        if (cxgb_up(adap))
                return PCI_ERS_RESULT_DISCONNECT;
        return PCI_ERS_RESULT_RECOVERED;
index 0dc0866..85d74e7 100644 (file)
@@ -187,8 +187,12 @@ struct cxgb4_virt_res {                      /* virtualized HW resources */
        struct cxgb4_range pbl;
        struct cxgb4_range qp;
        struct cxgb4_range cq;
+       struct cxgb4_range ocq;
 };
 
+#define OCQ_WIN_OFFSET(pdev, vres) \
+       (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size))
+
 /*
  * Block of information the LLD provides to ULDs attaching to a device.
  */
index bf21c14..0adc5bc 100644 (file)
 #define  WINDOW_MASK     0x000000ffU
 #define  WINDOW_SHIFT    0
 #define  WINDOW(x)       ((x) << WINDOW_SHIFT)
+#define PCIE_MEM_ACCESS_OFFSET 0x306c
 
 #define PCIE_CORE_UTL_SYSTEM_BUS_AGENT_STATUS 0x5908
 #define  RNPP 0x80000000U
index ca45df8..0969f2f 100644 (file)
@@ -485,6 +485,8 @@ enum fw_params_param_pfvf {
        FW_PARAMS_PARAM_PFVF_SCHEDCLASS_ETH = 0x20,
        FW_PARAMS_PARAM_PFVF_VIID       = 0x24,
        FW_PARAMS_PARAM_PFVF_CPMASK     = 0x25,
+       FW_PARAMS_PARAM_PFVF_OCQ_START  = 0x26,
+       FW_PARAMS_PARAM_PFVF_OCQ_END    = 0x27,
 };
 
 /*