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Date: Wed, 8 Apr 2009 01:50:46 -0700
From: Dhananjay Phadke <dhananjay@...xen.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, Amit Kumar Salecha <amit@...xen.com>
Subject: [patch next 09/11] netxen: enable rss for NX2031
Enable multiple rx rings for older NX2031 chip, firmware 3.4.336
or newer supports this feature.
Signed-off-by: Amit Kumar Salecha <amit@...xen.com>
Signed-off-by: Dhananjay Phadke <dhananjay@...xen.com>
---
drivers/net/netxen/netxen_nic.h | 27 +++++--
drivers/net/netxen/netxen_nic_ctx.c | 127 ++++++++++++++++++++++--------
drivers/net/netxen/netxen_nic_main.c | 21 ++++-
drivers/net/netxen/netxen_nic_phan_reg.h | 5 +-
4 files changed, 137 insertions(+), 43 deletions(-)
diff --git a/drivers/net/netxen/netxen_nic.h b/drivers/net/netxen/netxen_nic.h
index f13fd02..ebd6c2e 100644
--- a/drivers/net/netxen/netxen_nic.h
+++ b/drivers/net/netxen/netxen_nic.h
@@ -195,6 +195,8 @@
#define MAX_JUMBO_RCV_DESCRIPTORS 1024
#define MAX_LRO_RCV_DESCRIPTORS 8
#define NETXEN_CTX_SIGNATURE 0xdee0
+#define NETXEN_CTX_SIGNATURE_V2 0x0002dee0
+#define NETXEN_CTX_RESET 0xbad0
#define NETXEN_RCV_PRODUCER(ringid) (ringid)
#define PHAN_PEG_RCV_INITIALIZED 0xff01
@@ -234,12 +236,19 @@ typedef u32 netxen_ctx_msg;
#define netxen_set_msg_opcode(config_word, val) \
((config_word) &= ~(0xf<<28), (config_word) |= (val & 0xf) << 28)
-struct netxen_rcv_context {
- __le64 rcv_ring_addr;
- __le32 rcv_ring_size;
+struct netxen_rcv_ring {
+ __le64 addr;
+ __le32 size;
__le32 rsrvd;
};
+struct netxen_sts_ring {
+ __le64 addr;
+ __le32 size;
+ __le16 msi_index;
+ __le16 rsvd;
+} ;
+
struct netxen_ring_ctx {
/* one command ring */
@@ -249,13 +258,18 @@ struct netxen_ring_ctx {
__le32 rsrvd;
/* three receive rings */
- struct netxen_rcv_context rcv_ctx[3];
+ struct netxen_rcv_ring rcv_rings[NUM_RCV_DESC_RINGS];
- /* one status ring */
__le64 sts_ring_addr;
__le32 sts_ring_size;
__le32 ctx_id;
+
+ __le64 rsrvd_2[3];
+ __le32 sts_ring_count;
+ __le32 rsrvd_3;
+ struct netxen_sts_ring sts_rings[NUM_STS_DESC_RINGS];
+
} __attribute__ ((aligned(64)));
/*
@@ -1219,7 +1233,8 @@ struct netxen_adapter {
u8 mc_enabled;
u8 max_mc_count;
- u16 resv2;
+ u8 rss_supported;
+ u8 resv2;
u32 resv3;
u8 has_link_events;
diff --git a/drivers/net/netxen/netxen_nic_ctx.c b/drivers/net/netxen/netxen_nic_ctx.c
index 32f4839..fd82adf 100644
--- a/drivers/net/netxen/netxen_nic_ctx.c
+++ b/drivers/net/netxen/netxen_nic_ctx.c
@@ -441,7 +441,19 @@ static struct netxen_recv_crb recv_crb_registers[] = {
NETXEN_NIC_REG(0x120)
},
/* crb_sts_consumer: */
- NETXEN_NIC_REG(0x138),
+ {
+ NETXEN_NIC_REG(0x138),
+ NETXEN_NIC_REG_2(0x000),
+ NETXEN_NIC_REG_2(0x004),
+ NETXEN_NIC_REG_2(0x008),
+ },
+ /* sw_int_mask */
+ {
+ CRB_SW_INT_MASK_0,
+ NETXEN_NIC_REG_2(0x044),
+ NETXEN_NIC_REG_2(0x048),
+ NETXEN_NIC_REG_2(0x04c),
+ },
},
/* Instance 1 */
{
@@ -454,7 +466,19 @@ static struct netxen_recv_crb recv_crb_registers[] = {
NETXEN_NIC_REG(0x164)
},
/* crb_sts_consumer: */
- NETXEN_NIC_REG(0x17c),
+ {
+ NETXEN_NIC_REG(0x17c),
+ NETXEN_NIC_REG_2(0x020),
+ NETXEN_NIC_REG_2(0x024),
+ NETXEN_NIC_REG_2(0x028),
+ },
+ /* sw_int_mask */
+ {
+ CRB_SW_INT_MASK_1,
+ NETXEN_NIC_REG_2(0x064),
+ NETXEN_NIC_REG_2(0x068),
+ NETXEN_NIC_REG_2(0x06c),
+ },
},
/* Instance 2 */
{
@@ -467,7 +491,19 @@ static struct netxen_recv_crb recv_crb_registers[] = {
NETXEN_NIC_REG(0x208)
},
/* crb_sts_consumer: */
- NETXEN_NIC_REG(0x220),
+ {
+ NETXEN_NIC_REG(0x220),
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ },
+ /* sw_int_mask */
+ {
+ CRB_SW_INT_MASK_2,
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ },
},
/* Instance 3 */
{
@@ -480,7 +516,19 @@ static struct netxen_recv_crb recv_crb_registers[] = {
NETXEN_NIC_REG(0x24c)
},
/* crb_sts_consumer: */
- NETXEN_NIC_REG(0x264),
+ {
+ NETXEN_NIC_REG(0x264),
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ },
+ /* sw_int_mask */
+ {
+ CRB_SW_INT_MASK_3,
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ NETXEN_NIC_REG_2(0x03c),
+ },
},
};
@@ -492,40 +540,50 @@ netxen_init_old_ctx(struct netxen_adapter *adapter)
struct nx_host_sds_ring *sds_ring;
struct nx_host_tx_ring *tx_ring;
int ring;
- int func_id = adapter->portnum;
+ int port = adapter->portnum;
+ struct netxen_ring_ctx *hwctx = adapter->ctx_desc;
+ u32 signature;
tx_ring = &adapter->tx_ring;
- adapter->ctx_desc->cmd_ring_addr = cpu_to_le64(tx_ring->phys_addr);
- adapter->ctx_desc->cmd_ring_size = cpu_to_le32(tx_ring->num_desc);
+ hwctx->cmd_ring_addr = cpu_to_le64(tx_ring->phys_addr);
+ hwctx->cmd_ring_size = cpu_to_le32(tx_ring->num_desc);
recv_ctx = &adapter->recv_ctx;
for (ring = 0; ring < adapter->max_rds_rings; ring++) {
rds_ring = &recv_ctx->rds_rings[ring];
- adapter->ctx_desc->rcv_ctx[ring].rcv_ring_addr =
+ hwctx->rcv_rings[ring].addr =
cpu_to_le64(rds_ring->phys_addr);
- adapter->ctx_desc->rcv_ctx[ring].rcv_ring_size =
+ hwctx->rcv_rings[ring].size =
cpu_to_le32(rds_ring->num_desc);
}
- sds_ring = &recv_ctx->sds_rings[0];
- adapter->ctx_desc->sts_ring_addr = cpu_to_le64(sds_ring->phys_addr);
- adapter->ctx_desc->sts_ring_size = cpu_to_le32(sds_ring->num_desc);
- NXWR32(adapter, CRB_CTX_ADDR_REG_LO(func_id),
+ for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ sds_ring = &recv_ctx->sds_rings[ring];
+
+ if (ring == 0) {
+ hwctx->sts_ring_addr = cpu_to_le64(sds_ring->phys_addr);
+ hwctx->sts_ring_size = cpu_to_le32(sds_ring->num_desc);
+ }
+ hwctx->sts_rings[ring].addr = cpu_to_le64(sds_ring->phys_addr);
+ hwctx->sts_rings[ring].size = cpu_to_le32(sds_ring->num_desc);
+ hwctx->sts_rings[ring].msi_index = cpu_to_le16(ring);
+ }
+ hwctx->sts_ring_count = cpu_to_le32(adapter->max_sds_rings);
+
+ signature = (adapter->max_sds_rings > 1) ?
+ NETXEN_CTX_SIGNATURE_V2 : NETXEN_CTX_SIGNATURE;
+
+ NXWR32(adapter, CRB_CTX_ADDR_REG_LO(port),
lower32(adapter->ctx_desc_phys_addr));
- NXWR32(adapter, CRB_CTX_ADDR_REG_HI(func_id),
+ NXWR32(adapter, CRB_CTX_ADDR_REG_HI(port),
upper32(adapter->ctx_desc_phys_addr));
- NXWR32(adapter, CRB_CTX_SIGNATURE_REG(func_id),
- NETXEN_CTX_SIGNATURE | func_id);
+ NXWR32(adapter, CRB_CTX_SIGNATURE_REG(port),
+ signature | port);
return 0;
}
-static uint32_t sw_int_mask[4] = {
- CRB_SW_INT_MASK_0, CRB_SW_INT_MASK_1,
- CRB_SW_INT_MASK_2, CRB_SW_INT_MASK_3
-};
-
int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
{
void *addr;
@@ -538,6 +596,7 @@ int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
struct pci_dev *pdev = adapter->pdev;
struct net_device *netdev = adapter->netdev;
+ int port = adapter->portnum;
addr = pci_alloc_consistent(pdev,
sizeof(struct netxen_ring_ctx) + sizeof(uint32_t),
@@ -549,7 +608,7 @@ int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
}
memset(addr, 0, sizeof(struct netxen_ring_ctx));
adapter->ctx_desc = (struct netxen_ring_ctx *)addr;
- adapter->ctx_desc->ctx_id = cpu_to_le32(adapter->portnum);
+ adapter->ctx_desc->ctx_id = cpu_to_le32(port);
adapter->ctx_desc->cmd_consumer_offset =
cpu_to_le64(adapter->ctx_desc_phys_addr +
sizeof(struct netxen_ring_ctx));
@@ -586,8 +645,7 @@ int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
if (adapter->fw_major < 4)
rds_ring->crb_rcv_producer =
- recv_crb_registers[adapter->portnum].
- crb_rcv_producer[ring];
+ recv_crb_registers[port].crb_rcv_producer[ring];
}
for (ring = 0; ring < adapter->max_sds_rings; ring++) {
@@ -604,6 +662,12 @@ int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
goto err_out_free;
}
sds_ring->desc_head = (struct status_desc *)addr;
+
+ sds_ring->crb_sts_consumer =
+ recv_crb_registers[port].crb_sts_consumer[ring];
+
+ sds_ring->crb_intr_mask =
+ recv_crb_registers[port].sw_int_mask[ring];
}
@@ -615,19 +679,11 @@ int netxen_alloc_hw_resources(struct netxen_adapter *adapter)
if (err)
goto err_out_free;
} else {
- sds_ring = &recv_ctx->sds_rings[0];
- sds_ring->crb_sts_consumer =
- recv_crb_registers[adapter->portnum].crb_sts_consumer;
-
- recv_ctx->sds_rings[0].crb_intr_mask =
- sw_int_mask[adapter->portnum];
-
err = netxen_init_old_ctx(adapter);
if (err) {
netxen_free_hw_resources(adapter);
return err;
}
-
}
return 0;
@@ -645,9 +701,16 @@ void netxen_free_hw_resources(struct netxen_adapter *adapter)
struct nx_host_tx_ring *tx_ring;
int ring;
+ int port = adapter->portnum;
+
if (adapter->fw_major >= 4) {
nx_fw_cmd_destroy_tx_ctx(adapter);
nx_fw_cmd_destroy_rx_ctx(adapter);
+ } else {
+ netxen_api_lock(adapter);
+ NXWR32(adapter, CRB_CTX_SIGNATURE_REG(port),
+ NETXEN_CTX_RESET | port);
+ netxen_api_unlock(adapter);
}
if (adapter->ctx_desc != NULL) {
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 1c85b74..56c16c7 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -175,7 +175,8 @@ netxen_napi_add(struct netxen_adapter *adapter, struct net_device *netdev)
struct nx_host_sds_ring *sds_ring;
struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
- if (adapter->flags & NETXEN_NIC_MSIX_ENABLED)
+ if ((adapter->flags & NETXEN_NIC_MSIX_ENABLED) &&
+ adapter->rss_supported)
adapter->max_sds_rings = (num_online_cpus() >= 4) ? 4 : 2;
else
adapter->max_sds_rings = 1;
@@ -288,10 +289,22 @@ static void netxen_check_options(struct netxen_adapter *adapter)
else if (adapter->ahw.port_type == NETXEN_NIC_GBE)
adapter->num_rxd = MAX_RCV_DESCRIPTORS_1G;
- if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
+ adapter->msix_supported = 0;
+ if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
adapter->msix_supported = !!use_msi_x;
- else
- adapter->msix_supported = 0;
+ adapter->rss_supported = !!use_msi_x;
+ } else if (adapter->fw_version >= NETXEN_VERSION_CODE(3, 4, 336)) {
+ switch (adapter->ahw.board_type) {
+ case NETXEN_BRDTYPE_P2_SB31_10G:
+ case NETXEN_BRDTYPE_P2_SB31_10G_CX4:
+ case NETXEN_BRDTYPE_P2_SB31_10G_HMEZ:
+ adapter->msix_supported = !!use_msi_x;
+ adapter->rss_supported = !!use_msi_x;
+ break;
+ default:
+ break;
+ }
+ }
adapter->num_txd = MAX_CMD_DESCRIPTORS_HOST;
adapter->num_jumbo_rxd = MAX_JUMBO_RCV_DESCRIPTORS;
diff --git a/drivers/net/netxen/netxen_nic_phan_reg.h b/drivers/net/netxen/netxen_nic_phan_reg.h
index ecd622e..845dcf4 100644
--- a/drivers/net/netxen/netxen_nic_phan_reg.h
+++ b/drivers/net/netxen/netxen_nic_phan_reg.h
@@ -36,6 +36,8 @@
*/
#define NIC_CRB_BASE NETXEN_CAM_RAM(0x200)
#define NETXEN_NIC_REG(X) (NIC_CRB_BASE+(X))
+#define NIC_CRB_BASE_2 NETXEN_CAM_RAM(0x700)
+#define NETXEN_NIC_REG_2(X) (NIC_CRB_BASE_2+(X))
#define CRB_PHAN_CNTRL_LO_OFFSET NETXEN_NIC_REG(0x00)
#define CRB_PHAN_CNTRL_HI_OFFSET NETXEN_NIC_REG(0x04)
@@ -160,7 +162,8 @@
struct netxen_recv_crb {
u32 crb_rcv_producer[NUM_RCV_DESC_RINGS];
- u32 crb_sts_consumer;
+ u32 crb_sts_consumer[NUM_STS_DESC_RINGS];
+ u32 sw_int_mask[NUM_STS_DESC_RINGS];
};
/*
--
1.6.0.2
--
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