diff options
| author |   Yuval Mintz <Yuval.Mintz@qlogic.com> | 2016-05-11 16:36:13 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-05-12 00:04:07 -0400 |
| commit | 37bff2b9c6addf6216c8d04e95be596678e8deff (patch) | |
| tree | 1d2488426fee5eab5a30fc4683e359c6e9f2c07b /drivers/net/ethernet/qlogic/qed/qed_hw.c | |
| parent | qed: Add CONFIG_QED_SRIOV (diff) | |
| download | linux-37bff2b9c6addf6216c8d04e95be596678e8deff.tar.xz linux-37bff2b9c6addf6216c8d04e95be596678e8deff.zip | |
qed: Add VF->PF channel infrastructure
Communication between VF and PF is based on a dedicated HW channel;
VF will prepare a messge, and by signaling the HW the PF would get a
notification of that message existance. The PF would then copy the
message, process it and DMA an answer back to the VF as a response.
The messages themselves are TLV-based - allowing easier backward/forward
compatibility.
This patch adds the infrastructure of the channel on the PF side -
starting with the arrival of the notification and ending with DMAing
the response back to the VF.
It also adds a dummy-response as reference, as it only lays the
groundwork of the communication; it doesn't really add support of any
actual messages.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_hw.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_hw.c | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_hw.c b/drivers/net/ethernet/qlogic/qed/qed_hw.c index a8cf96c34bef..a9be5a422d2d 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_hw.c +++ b/drivers/net/ethernet/qlogic/qed/qed_hw.c @@ -355,8 +355,8 @@ static void qed_dmae_opcode(struct qed_hwfn *p_hwfn, const u8 is_dst_type_grc, struct qed_dmae_params *p_params) { + u16 opcode_b = 0; u32 opcode = 0; - u16 opcodeB = 0; /* Whether the source is the PCIe or the GRC. * 0- The source is the PCIe @@ -398,14 +398,24 @@ static void qed_dmae_opcode(struct qed_hwfn *p_hwfn, opcode |= (DMAE_CMD_DST_ADDR_RESET_MASK << DMAE_CMD_DST_ADDR_RESET_SHIFT); - opcodeB |= (DMAE_CMD_SRC_VF_ID_MASK << - DMAE_CMD_SRC_VF_ID_SHIFT); + /* SRC/DST VFID: all 1's - pf, otherwise VF id */ + if (p_params->flags & QED_DMAE_FLAG_VF_SRC) { + opcode |= 1 << DMAE_CMD_SRC_VF_ID_VALID_SHIFT; + opcode_b |= p_params->src_vfid << DMAE_CMD_SRC_VF_ID_SHIFT; + } else { + opcode_b |= DMAE_CMD_SRC_VF_ID_MASK << + DMAE_CMD_SRC_VF_ID_SHIFT; + } - opcodeB |= (DMAE_CMD_DST_VF_ID_MASK << - DMAE_CMD_DST_VF_ID_SHIFT); + if (p_params->flags & QED_DMAE_FLAG_VF_DST) { + opcode |= 1 << DMAE_CMD_DST_VF_ID_VALID_SHIFT; + opcode_b |= p_params->dst_vfid << DMAE_CMD_DST_VF_ID_SHIFT; + } else { + opcode_b |= DMAE_CMD_DST_VF_ID_MASK << DMAE_CMD_DST_VF_ID_SHIFT; + } p_hwfn->dmae_info.p_dmae_cmd->opcode = cpu_to_le32(opcode); - p_hwfn->dmae_info.p_dmae_cmd->opcode_b = cpu_to_le16(opcodeB); + p_hwfn->dmae_info.p_dmae_cmd->opcode_b = cpu_to_le16(opcode_b); } u32 qed_dmae_idx_to_go_cmd(u8 idx) @@ -753,6 +763,28 @@ int qed_dmae_host2grc(struct qed_hwfn *p_hwfn, return rc; } +int +qed_dmae_host2host(struct qed_hwfn *p_hwfn, + struct qed_ptt *p_ptt, + dma_addr_t source_addr, + dma_addr_t dest_addr, + u32 size_in_dwords, struct qed_dmae_params *p_params) +{ + int rc; + + mutex_lock(&(p_hwfn->dmae_info.mutex)); + + rc = qed_dmae_execute_command(p_hwfn, p_ptt, source_addr, + dest_addr, + QED_DMAE_ADDRESS_HOST_PHYS, + QED_DMAE_ADDRESS_HOST_PHYS, + size_in_dwords, p_params); + + mutex_unlock(&(p_hwfn->dmae_info.mutex)); + + return rc; +} + u16 qed_get_qm_pq(struct qed_hwfn *p_hwfn, enum protocol_type proto, union qed_qm_pq_params *p_params) |