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authorIyappan Subramanian <isubramanian@apm.com>2015-04-28 13:52:37 -0700
committerDavid S. Miller <davem@davemloft.net>2015-04-30 16:03:13 -0400
commit81cefb81db99402b5bbbf286beac2faa4f095620 (patch)
tree44944d15dc676f151c50a9477702c6af57d950a1 /drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
parenttcp_westwood: fix tcp_westwood_info() (diff)
downloadlinux-dev-81cefb81db99402b5bbbf286beac2faa4f095620.tar.xz
linux-dev-81cefb81db99402b5bbbf286beac2faa4f095620.zip
drivers: net: xgene: Change ring manager to use function pointers
This is a preparatory patch for adding ethernet support for APM X-Gene ethernet driver to work with ring manager v2. Added xgene_ring_ops structure for storing chip specific ring manager properties and functions. Signed-off-by: Iyappan Subramanian <isubramanian@apm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--drivers/net/ethernet/apm/xgene/xgene_enet_hw.c36
1 files changed, 31 insertions, 5 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
index b927021c6c40..25873d142b95 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
@@ -87,10 +87,11 @@ static void xgene_enet_ring_rd32(struct xgene_enet_desc_ring *ring,
static void xgene_enet_write_ring_state(struct xgene_enet_desc_ring *ring)
{
+ struct xgene_enet_pdata *pdata = netdev_priv(ring->ndev);
int i;
xgene_enet_ring_wr32(ring, CSR_RING_CONFIG, ring->num);
- for (i = 0; i < NUM_RING_CONFIG; i++) {
+ for (i = 0; i < pdata->ring_ops->num_ring_config; i++) {
xgene_enet_ring_wr32(ring, CSR_RING_WR_BASE + (i * 4),
ring->state[i]);
}
@@ -98,7 +99,7 @@ static void xgene_enet_write_ring_state(struct xgene_enet_desc_ring *ring)
static void xgene_enet_clr_ring_state(struct xgene_enet_desc_ring *ring)
{
- memset(ring->state, 0, sizeof(u32) * NUM_RING_CONFIG);
+ memset(ring->state, 0, sizeof(ring->state));
xgene_enet_write_ring_state(ring);
}
@@ -141,8 +142,8 @@ static void xgene_enet_clr_desc_ring_id(struct xgene_enet_desc_ring *ring)
xgene_enet_ring_wr32(ring, CSR_RING_ID_BUF, 0);
}
-struct xgene_enet_desc_ring *xgene_enet_setup_ring(
- struct xgene_enet_desc_ring *ring)
+static struct xgene_enet_desc_ring *xgene_enet_setup_ring(
+ struct xgene_enet_desc_ring *ring)
{
u32 size = ring->size;
u32 i, data;
@@ -168,7 +169,7 @@ struct xgene_enet_desc_ring *xgene_enet_setup_ring(
return ring;
}
-void xgene_enet_clear_ring(struct xgene_enet_desc_ring *ring)
+static void xgene_enet_clear_ring(struct xgene_enet_desc_ring *ring)
{
u32 data;
bool is_bufpool;
@@ -186,6 +187,22 @@ out:
xgene_enet_clr_ring_state(ring);
}
+static void xgene_enet_wr_cmd(struct xgene_enet_desc_ring *ring, int count)
+{
+ iowrite32(count, ring->cmd);
+}
+
+static u32 xgene_enet_ring_len(struct xgene_enet_desc_ring *ring)
+{
+ u32 __iomem *cmd_base = ring->cmd_base;
+ u32 ring_state, num_msgs;
+
+ ring_state = ioread32(&cmd_base[1]);
+ num_msgs = GET_VAL(NUMMSGSINQ, ring_state);
+
+ return num_msgs;
+}
+
void xgene_enet_parse_error(struct xgene_enet_desc_ring *ring,
struct xgene_enet_pdata *pdata,
enum xgene_enet_err_code status)
@@ -803,3 +820,12 @@ struct xgene_port_ops xgene_gport_ops = {
.cle_bypass = xgene_enet_cle_bypass,
.shutdown = xgene_gport_shutdown,
};
+
+struct xgene_ring_ops xgene_ring1_ops = {
+ .num_ring_config = NUM_RING_CONFIG,
+ .num_ring_id_shift = 6,
+ .setup = xgene_enet_setup_ring,
+ .clear = xgene_enet_clear_ring,
+ .wr_cmd = xgene_enet_wr_cmd,
+ .len = xgene_enet_ring_len,
+};