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Message-Id: <1430254360-23698-4-git-send-email-isubramanian@apm.com>
Date: Tue, 28 Apr 2015 13:52:39 -0700
From: Iyappan Subramanian <isubramanian@....com>
To: davem@...emloft.net, netdev@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org, kchudgar@....com,
patches@....com, Iyappan Subramanian <isubramanian@....com>
Subject: [PATCH net-next v1 3/4] drivers: net: xgene: Add 10GbE support with ring manager v2
Signed-off-by: Iyappan Subramanian <isubramanian@....com>
---
drivers/net/ethernet/apm/xgene/xgene_enet_hw.h | 1 +
drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 141 ++++++++++++++++++----
drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 17 +++
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c | 1 -
drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h | 17 +++
5 files changed, 152 insertions(+), 25 deletions(-)
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
index 1dbc10a..5176fcb 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h
@@ -102,6 +102,7 @@ enum xgene_enet_rm {
#define BLOCK_ETH_CSR_OFFSET 0x2000
#define BLOCK_ETH_RING_IF_OFFSET 0x9000
+#define BLOCK_ETH_CLKRST_CSR_OFFSET 0xc000
#define BLOCK_ETH_DIAG_CSR_OFFSET 0xD000
#define BLOCK_ETH_MAC_OFFSET 0x0000
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
index b3bbc68..513bfa4 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c
@@ -28,6 +28,8 @@
#define RES_RING_CSR 1
#define RES_RING_CMD 2
+static const struct of_device_id xgene_enet_of_match[];
+
static void xgene_enet_init_bufpool(struct xgene_enet_desc_ring *buf_pool)
{
struct xgene_enet_raw_desc16 *raw_desc;
@@ -632,6 +634,25 @@ static void xgene_enet_free_desc_rings(struct xgene_enet_pdata *pdata)
}
}
+static bool is_irq_mbox_required(struct xgene_enet_pdata *pdata,
+ struct xgene_enet_desc_ring *ring)
+{
+ if ((pdata->enet_id == XGENE_ENET2) &&
+ (xgene_enet_ring_owner(ring->id) == RING_OWNER_CPU)) {
+ return true;
+ }
+
+ return false;
+}
+
+static void __iomem *xgene_enet_ring_cmd_base(struct xgene_enet_pdata *pdata,
+ struct xgene_enet_desc_ring *ring)
+{
+ u8 num_ring_id_shift = pdata->ring_ops->num_ring_id_shift;
+
+ return pdata->ring_cmd_addr + (ring->num << num_ring_id_shift);
+}
+
static struct xgene_enet_desc_ring *xgene_enet_create_desc_ring(
struct net_device *ndev, u32 ring_num,
enum xgene_enet_ring_cfgsize cfgsize, u32 ring_id)
@@ -663,7 +684,18 @@ static struct xgene_enet_desc_ring *xgene_enet_create_desc_ring(
}
ring->size = size;
- ring->cmd_base = pdata->ring_cmd_addr + (ring->num << 6);
+ if (is_irq_mbox_required(pdata, ring)) {
+ ring->irq_mbox_addr = dma_zalloc_coherent(dev, INTR_MBOX_SIZE,
+ &ring->irq_mbox_dma, GFP_KERNEL);
+ if (!ring->irq_mbox_addr) {
+ dma_free_coherent(dev, size, ring->desc_addr,
+ ring->dma);
+ devm_kfree(dev, ring);
+ return NULL;
+ }
+ }
+
+ ring->cmd_base = xgene_enet_ring_cmd_base(pdata, ring);
ring->cmd = ring->cmd_base + INC_DEC_CMD_ADDR;
ring = pdata->ring_ops->setup(ring);
netdev_dbg(ndev, "ring info: num=%d size=%d id=%d slots=%d\n",
@@ -677,12 +709,34 @@ static u16 xgene_enet_get_ring_id(enum xgene_ring_owner owner, u8 bufnum)
return (owner << 6) | (bufnum & GENMASK(5, 0));
}
+static enum xgene_ring_owner xgene_derive_ring_owner(struct xgene_enet_pdata *p)
+{
+ enum xgene_ring_owner owner;
+
+ if (p->enet_id == XGENE_ENET1) {
+ switch (p->phy_mode) {
+ case PHY_INTERFACE_MODE_SGMII:
+ owner = RING_OWNER_ETH0;
+ break;
+ default:
+ owner = (!p->port_id) ? RING_OWNER_ETH0 :
+ RING_OWNER_ETH1;
+ break;
+ }
+ } else {
+ owner = (!p->port_id) ? RING_OWNER_ETH0 : RING_OWNER_ETH1;
+ }
+
+ return owner;
+}
+
static int xgene_enet_create_desc_rings(struct net_device *ndev)
{
struct xgene_enet_pdata *pdata = netdev_priv(ndev);
struct device *dev = ndev_to_dev(ndev);
struct xgene_enet_desc_ring *rx_ring, *tx_ring, *cp_ring;
struct xgene_enet_desc_ring *buf_pool = NULL;
+ enum xgene_ring_owner owner;
u8 cpu_bufnum = pdata->cpu_bufnum;
u8 eth_bufnum = pdata->eth_bufnum;
u8 bp_bufnum = pdata->bp_bufnum;
@@ -691,6 +745,7 @@ static int xgene_enet_create_desc_rings(struct net_device *ndev)
int ret;
/* allocate rx descriptor ring */
+ owner = xgene_derive_ring_owner(pdata);
ring_id = xgene_enet_get_ring_id(RING_OWNER_CPU, cpu_bufnum++);
rx_ring = xgene_enet_create_desc_ring(ndev, ring_num++,
RING_CFGSIZE_16KB, ring_id);
@@ -700,7 +755,8 @@ static int xgene_enet_create_desc_rings(struct net_device *ndev)
}
/* allocate buffer pool for receiving packets */
- ring_id = xgene_enet_get_ring_id(RING_OWNER_ETH0, bp_bufnum++);
+ owner = xgene_derive_ring_owner(pdata);
+ ring_id = xgene_enet_get_ring_id(owner, bp_bufnum++);
buf_pool = xgene_enet_create_desc_ring(ndev, ring_num++,
RING_CFGSIZE_2KB, ring_id);
if (!buf_pool) {
@@ -729,7 +785,8 @@ static int xgene_enet_create_desc_rings(struct net_device *ndev)
pdata->rx_ring = rx_ring;
/* allocate tx descriptor ring */
- ring_id = xgene_enet_get_ring_id(RING_OWNER_ETH0, eth_bufnum++);
+ owner = xgene_derive_ring_owner(pdata);
+ ring_id = xgene_enet_get_ring_id(owner, eth_bufnum++);
tx_ring = xgene_enet_create_desc_ring(ndev, ring_num++,
RING_CFGSIZE_16KB, ring_id);
if (!tx_ring) {
@@ -957,7 +1014,10 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
pdata->clk = NULL;
}
- base_addr = pdata->base_addr - (pdata->port_id * MAC_OFFSET);
+ if (pdata->phy_mode != PHY_INTERFACE_MODE_XGMII)
+ base_addr = pdata->base_addr - (pdata->port_id * MAC_OFFSET);
+ else
+ base_addr = pdata->base_addr;
pdata->eth_csr_addr = base_addr + BLOCK_ETH_CSR_OFFSET;
pdata->eth_ring_if_addr = base_addr + BLOCK_ETH_RING_IF_OFFSET;
pdata->eth_diag_csr_addr = base_addr + BLOCK_ETH_DIAG_CSR_OFFSET;
@@ -1029,24 +1089,44 @@ static void xgene_enet_setup_ops(struct xgene_enet_pdata *pdata)
break;
}
- switch (pdata->port_id) {
- case 0:
- pdata->cpu_bufnum = START_CPU_BUFNUM_0;
- pdata->eth_bufnum = START_ETH_BUFNUM_0;
- pdata->bp_bufnum = START_BP_BUFNUM_0;
- pdata->ring_num = START_RING_NUM_0;
- break;
- case 1:
- pdata->cpu_bufnum = START_CPU_BUFNUM_1;
- pdata->eth_bufnum = START_ETH_BUFNUM_1;
- pdata->bp_bufnum = START_BP_BUFNUM_1;
- pdata->ring_num = START_RING_NUM_1;
- break;
- default:
- break;
+ if (pdata->enet_id == XGENE_ENET1) {
+ switch (pdata->port_id) {
+ case 0:
+ pdata->cpu_bufnum = START_CPU_BUFNUM_0;
+ pdata->eth_bufnum = START_ETH_BUFNUM_0;
+ pdata->bp_bufnum = START_BP_BUFNUM_0;
+ pdata->ring_num = START_RING_NUM_0;
+ break;
+ case 1:
+ pdata->cpu_bufnum = START_CPU_BUFNUM_1;
+ pdata->eth_bufnum = START_ETH_BUFNUM_1;
+ pdata->bp_bufnum = START_BP_BUFNUM_1;
+ pdata->ring_num = START_RING_NUM_1;
+ break;
+ default:
+ break;
+ }
+ pdata->ring_ops = &xgene_ring1_ops;
+ } else {
+ switch (pdata->port_id) {
+ case 0:
+ pdata->cpu_bufnum = X2_START_CPU_BUFNUM_0;
+ pdata->eth_bufnum = X2_START_ETH_BUFNUM_0;
+ pdata->bp_bufnum = X2_START_BP_BUFNUM_0;
+ pdata->ring_num = X2_START_RING_NUM_0;
+ break;
+ case 1:
+ pdata->cpu_bufnum = X2_START_CPU_BUFNUM_1;
+ pdata->eth_bufnum = X2_START_ETH_BUFNUM_1;
+ pdata->bp_bufnum = X2_START_BP_BUFNUM_1;
+ pdata->ring_num = X2_START_RING_NUM_1;
+ break;
+ default:
+ break;
+ }
+ pdata->rm = RM0;
+ pdata->ring_ops = &xgene_ring2_ops;
}
-
- pdata->ring_ops = &xgene_ring1_ops;
}
static void xgene_enet_napi_add(struct xgene_enet_pdata *pdata)
@@ -1082,6 +1162,7 @@ static int xgene_enet_probe(struct platform_device *pdev)
struct xgene_enet_pdata *pdata;
struct device *dev = &pdev->dev;
struct xgene_mac_ops *mac_ops;
+ const struct of_device_id *of_id;
int ret;
ndev = alloc_etherdev(sizeof(struct xgene_enet_pdata));
@@ -1100,6 +1181,17 @@ static int xgene_enet_probe(struct platform_device *pdev)
NETIF_F_GSO |
NETIF_F_GRO;
+#ifdef CONFIG_OF
+ of_id = of_match_device(xgene_enet_of_match, &pdev->dev);
+ if (of_id) {
+ pdata->enet_id = (enum xgene_enet_id)of_id->data;
+ if (!pdata->enet_id) {
+ free_netdev(ndev);
+ return -ENODEV;
+ }
+ }
+#endif
+
ret = xgene_enet_get_resources(pdata);
if (ret)
goto err;
@@ -1171,9 +1263,10 @@ MODULE_DEVICE_TABLE(acpi, xgene_enet_acpi_match);
#ifdef CONFIG_OF
static const struct of_device_id xgene_enet_of_match[] = {
- {.compatible = "apm,xgene-enet",},
- {.compatible = "apm,xgene1-sgenet",},
- {.compatible = "apm,xgene1-xgenet",},
+ {.compatible = "apm,xgene-enet", .data = (void *)XGENE_ENET1},
+ {.compatible = "apm,xgene1-sgenet", .data = (void *)XGENE_ENET1},
+ {.compatible = "apm,xgene1-xgenet", .data = (void *)XGENE_ENET1},
+ {.compatible = "apm,xgene2-xgenet", .data = (void *)XGENE_ENET2},
{},
};
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
index a44f4a3..ef1887b 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h
@@ -35,6 +35,7 @@
#include <linux/if_vlan.h>
#include <linux/phy.h>
#include "xgene_enet_hw.h"
+#include "xgene_enet_ring2.h"
#define XGENE_DRV_VERSION "v1.0"
#define XGENE_ENET_MAX_MTU 1536
@@ -51,12 +52,27 @@
#define START_BP_BUFNUM_1 0x2A
#define START_RING_NUM_1 264
+#define X2_START_CPU_BUFNUM_0 0
+#define X2_START_ETH_BUFNUM_0 0
+#define X2_START_BP_BUFNUM_0 0x20
+#define X2_START_RING_NUM_0 0
+
+#define X2_START_CPU_BUFNUM_1 0xc
+#define X2_START_ETH_BUFNUM_1 0
+#define X2_START_BP_BUFNUM_1 0x20
+#define X2_START_RING_NUM_1 256
+
#define IRQ_ID_SIZE 16
#define XGENE_MAX_TXC_RINGS 1
#define PHY_POLL_LINK_ON (10 * HZ)
#define PHY_POLL_LINK_OFF (PHY_POLL_LINK_ON / 5)
+enum xgene_enet_id {
+ XGENE_ENET1 = 1,
+ XGENE_ENET2
+};
+
/* software context of a descriptor ring */
struct xgene_enet_desc_ring {
struct net_device *ndev;
@@ -124,6 +140,7 @@ struct xgene_enet_pdata {
int phy_speed;
struct clk *clk;
struct platform_device *pdev;
+ enum xgene_enet_id enet_id;
struct xgene_enet_desc_ring *tx_ring;
struct xgene_enet_desc_ring *rx_ring;
char *dev_name;
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c
index a18a9d1..27ba2fe 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c
@@ -122,7 +122,6 @@ static bool xgene_enet_rd_indirect(void __iomem *addr, void __iomem *rd,
return true;
}
-
static void xgene_enet_rd_mac(struct xgene_enet_pdata *pdata,
u32 rd_addr, u32 *rd_data)
{
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h
index 5a5296a..d07ee5e 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h
@@ -24,6 +24,23 @@
#define BLOCK_AXG_MAC_OFFSET 0x0800
#define BLOCK_AXG_MAC_CSR_OFFSET 0x2000
+#define XGENET_SRST_ADDR 0x0000
+#define XGENET_CLKEN_ADDR 0x0008
+
+#define CSR_CLK BIT(0)
+#define XGENET_CLK BIT(1)
+#define PCS_CLK BIT(3)
+#define AN_REF_CLK BIT(4)
+#define AN_CLK BIT(5)
+#define AD_CLK BIT(6)
+
+#define CSR_RST BIT(0)
+#define XGENET_RST BIT(1)
+#define PCS_RST BIT(3)
+#define AN_REF_RST BIT(4)
+#define AN_RST BIT(5)
+#define AD_RST BIT(6)
+
#define AXGMAC_CONFIG_0 0x0000
#define AXGMAC_CONFIG_1 0x0004
#define HSTMACRST BIT(31)
--
1.9.1
--
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