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Date: Mon, 2 Aug 2010 16:19:19 -0700
From: Dimitris Michailidis <dm@...lsio.com>
To: netdev@...r.kernel.org
Cc: Dimitris Michailidis <dm@...lsio.com>
Subject: [PATCH net-next 4/9] cxgb4: get on-chip queue info from FW and create a memory window for them
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@...lsio.com>
---
drivers/net/cxgb4/cxgb4_main.c | 24 ++++++++++++++++++++++--
drivers/net/cxgb4/cxgb4_uld.h | 4 ++++
drivers/net/cxgb4/t4_regs.h | 1 +
drivers/net/cxgb4/t4fw_api.h | 2 ++
4 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/drivers/net/cxgb4/cxgb4_main.c b/drivers/net/cxgb4/cxgb4_main.c
index 0af6d67..47e8936 100644
--- a/drivers/net/cxgb4/cxgb4_main.c
+++ b/drivers/net/cxgb4/cxgb4_main.c
@@ -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;
diff --git a/drivers/net/cxgb4/cxgb4_uld.h b/drivers/net/cxgb4/cxgb4_uld.h
index 0dc0866..85d74e7 100644
--- a/drivers/net/cxgb4/cxgb4_uld.h
+++ b/drivers/net/cxgb4/cxgb4_uld.h
@@ -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.
*/
diff --git a/drivers/net/cxgb4/t4_regs.h b/drivers/net/cxgb4/t4_regs.h
index bf21c14..0adc5bc 100644
--- a/drivers/net/cxgb4/t4_regs.h
+++ b/drivers/net/cxgb4/t4_regs.h
@@ -232,6 +232,7 @@
#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
diff --git a/drivers/net/cxgb4/t4fw_api.h b/drivers/net/cxgb4/t4fw_api.h
index ca45df8..0969f2f 100644
--- a/drivers/net/cxgb4/t4fw_api.h
+++ b/drivers/net/cxgb4/t4fw_api.h
@@ -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,
};
/*
--
1.5.4
--
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