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Message-ID: <201702010402.H1dN6RUP%fengguang.wu@intel.com>
Date: Wed, 1 Feb 2017 04:44:10 +0800
From: kbuild test robot <lkp@...el.com>
To: Iyappan Subramanian <isubramanian@....com>
Cc: kbuild-all@...org, davem@...emloft.net, netdev@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, patches@....com,
kchudgar@....com, Iyappan Subramanian <isubramanian@....com>
Subject: Re: [PATCH net-next 5/6] drivers: net: xgene-v2: Add transmit and
receive
Hi Iyappan,
[auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Iyappan-Subramanian/drivers-net-xgene-v2-Add-RGMII-based-1G-driver/20170201-034317
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All warnings (new ones prefixed by >>):
In file included from include/linux/byteorder/little_endian.h:4:0,
from arch/x86/include/uapi/asm/byteorder.h:4,
from include/asm-generic/bitops/le.h:5,
from arch/x86/include/asm/bitops.h:517,
from include/linux/bitops.h:36,
from include/linux/kernel.h:10,
from include/linux/list.h:8,
from include/linux/resource_ext.h:17,
from include/linux/acpi.h:26,
from drivers/net/ethernet/apm/xgene-v2/main.h:25,
from drivers/net/ethernet/apm/xgene-v2/main.c:22:
drivers/net/ethernet/apm/xgene-v2/main.c: In function 'xge_refill_buffers':
>> drivers/net/ethernet/apm/xgene-v2/main.c:162:20: warning: right shift count >= width of type [-Wshift-count-overflow]
dma_addr >> PKT_ADDRL_LEN));
^
include/uapi/linux/byteorder/little_endian.h:30:51: note: in definition of macro '__cpu_to_le64'
#define __cpu_to_le64(x) ((__force __le64)(__u64)(x))
^
>> drivers/net/ethernet/apm/xgene-v2/main.c:161:9: note: in expansion of macro 'SET_BITS'
SET_BITS(PKT_ADDRH,
^~~~~~~~
drivers/net/ethernet/apm/xgene-v2/main.c: In function 'xge_start_xmit':
drivers/net/ethernet/apm/xgene-v2/main.c:346:19: warning: right shift count >= width of type [-Wshift-count-overflow]
dma_addr >> PKT_ADDRL_LEN));
^
include/uapi/linux/byteorder/little_endian.h:30:51: note: in definition of macro '__cpu_to_le64'
#define __cpu_to_le64(x) ((__force __le64)(__u64)(x))
^
drivers/net/ethernet/apm/xgene-v2/main.c:345:8: note: in expansion of macro 'SET_BITS'
SET_BITS(PKT_ADDRH,
^~~~~~~~
drivers/net/ethernet/apm/xgene-v2/main.c: In function 'xge_rx_poll':
>> drivers/net/ethernet/apm/xgene-v2/main.c:453:23: warning: left shift count >= width of type [-Wshift-count-overflow]
dma_addr = (addr_hi << PKT_ADDRL_LEN) | addr_lo;
^~
--
drivers/net/ethernet/apm/xgene-v2/ring.c: In function 'xge_setup_desc':
>> drivers/net/ethernet/apm/xgene-v2/ring.c:40:20: warning: right shift count >= width of type [-Wshift-count-overflow]
dma_h = next_dma >> NEXT_DESC_ADDRL_LEN;
^~
drivers/net/ethernet/apm/xgene-v2/ring.c: In function 'xge_update_tx_desc_addr':
drivers/net/ethernet/apm/xgene-v2/ring.c:51:42: warning: right shift count >= width of type [-Wshift-count-overflow]
xge_wr_csr(pdata, DMATXDESCH, (dma_addr >> NEXT_DESC_ADDRL_LEN));
^~
drivers/net/ethernet/apm/xgene-v2/ring.c: In function 'xge_update_rx_desc_addr':
drivers/net/ethernet/apm/xgene-v2/ring.c:59:42: warning: right shift count >= width of type [-Wshift-count-overflow]
xge_wr_csr(pdata, DMARXDESCH, (dma_addr >> NEXT_DESC_ADDRL_LEN));
^~
vim +162 drivers/net/ethernet/apm/xgene-v2/main.c
90db21d34 Iyappan Subramanian 2017-01-31 16 * GNU General Public License for more details.
90db21d34 Iyappan Subramanian 2017-01-31 17 *
90db21d34 Iyappan Subramanian 2017-01-31 18 * You should have received a copy of the GNU General Public License
90db21d34 Iyappan Subramanian 2017-01-31 19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
90db21d34 Iyappan Subramanian 2017-01-31 20 */
90db21d34 Iyappan Subramanian 2017-01-31 21
90db21d34 Iyappan Subramanian 2017-01-31 @22 #include "main.h"
90db21d34 Iyappan Subramanian 2017-01-31 23
90db21d34 Iyappan Subramanian 2017-01-31 24 static const struct acpi_device_id xge_acpi_match[];
90db21d34 Iyappan Subramanian 2017-01-31 25
90db21d34 Iyappan Subramanian 2017-01-31 26 static int xge_get_resources(struct xge_pdata *pdata)
90db21d34 Iyappan Subramanian 2017-01-31 27 {
90db21d34 Iyappan Subramanian 2017-01-31 28 struct platform_device *pdev;
90db21d34 Iyappan Subramanian 2017-01-31 29 struct net_device *ndev;
90db21d34 Iyappan Subramanian 2017-01-31 30 struct device *dev;
90db21d34 Iyappan Subramanian 2017-01-31 31 struct resource *res;
90db21d34 Iyappan Subramanian 2017-01-31 32 int phy_mode, ret = 0;
90db21d34 Iyappan Subramanian 2017-01-31 33
90db21d34 Iyappan Subramanian 2017-01-31 34 pdev = pdata->pdev;
90db21d34 Iyappan Subramanian 2017-01-31 35 dev = &pdev->dev;
90db21d34 Iyappan Subramanian 2017-01-31 36 ndev = pdata->ndev;
90db21d34 Iyappan Subramanian 2017-01-31 37
90db21d34 Iyappan Subramanian 2017-01-31 38 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
90db21d34 Iyappan Subramanian 2017-01-31 39 if (!res) {
90db21d34 Iyappan Subramanian 2017-01-31 40 dev_err(dev, "Resource enet_csr not defined\n");
90db21d34 Iyappan Subramanian 2017-01-31 41 return -ENODEV;
90db21d34 Iyappan Subramanian 2017-01-31 42 }
90db21d34 Iyappan Subramanian 2017-01-31 43
90db21d34 Iyappan Subramanian 2017-01-31 44 pdata->resources.base_addr = devm_ioremap(dev, res->start,
90db21d34 Iyappan Subramanian 2017-01-31 45 resource_size(res));
90db21d34 Iyappan Subramanian 2017-01-31 46 if (!pdata->resources.base_addr) {
90db21d34 Iyappan Subramanian 2017-01-31 47 dev_err(dev, "Unable to retrieve ENET Port CSR region\n");
90db21d34 Iyappan Subramanian 2017-01-31 48 return -ENOMEM;
90db21d34 Iyappan Subramanian 2017-01-31 49 }
90db21d34 Iyappan Subramanian 2017-01-31 50
90db21d34 Iyappan Subramanian 2017-01-31 51 if (!device_get_mac_address(dev, ndev->dev_addr, ETH_ALEN))
90db21d34 Iyappan Subramanian 2017-01-31 52 eth_hw_addr_random(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 53
90db21d34 Iyappan Subramanian 2017-01-31 54 memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len);
90db21d34 Iyappan Subramanian 2017-01-31 55
90db21d34 Iyappan Subramanian 2017-01-31 56 phy_mode = device_get_phy_mode(dev);
90db21d34 Iyappan Subramanian 2017-01-31 57 if (phy_mode < 0) {
90db21d34 Iyappan Subramanian 2017-01-31 58 dev_err(dev, "Unable to get phy-connection-type\n");
90db21d34 Iyappan Subramanian 2017-01-31 59 return phy_mode;
90db21d34 Iyappan Subramanian 2017-01-31 60 }
90db21d34 Iyappan Subramanian 2017-01-31 61 pdata->resources.phy_mode = phy_mode;
90db21d34 Iyappan Subramanian 2017-01-31 62
90db21d34 Iyappan Subramanian 2017-01-31 63 if (pdata->resources.phy_mode != PHY_INTERFACE_MODE_RGMII) {
90db21d34 Iyappan Subramanian 2017-01-31 64 dev_err(dev, "Incorrect phy-connection-type specified\n");
90db21d34 Iyappan Subramanian 2017-01-31 65 return -ENODEV;
90db21d34 Iyappan Subramanian 2017-01-31 66 }
90db21d34 Iyappan Subramanian 2017-01-31 67
90db21d34 Iyappan Subramanian 2017-01-31 68 ret = platform_get_irq(pdev, 0);
90db21d34 Iyappan Subramanian 2017-01-31 69 if (ret <= 0) {
90db21d34 Iyappan Subramanian 2017-01-31 70 dev_err(dev, "Unable to get ENET IRQ\n");
90db21d34 Iyappan Subramanian 2017-01-31 71 ret = ret ? : -ENXIO;
90db21d34 Iyappan Subramanian 2017-01-31 72 return ret;
90db21d34 Iyappan Subramanian 2017-01-31 73 }
90db21d34 Iyappan Subramanian 2017-01-31 74 pdata->resources.irq = ret;
90db21d34 Iyappan Subramanian 2017-01-31 75
90db21d34 Iyappan Subramanian 2017-01-31 76 return 0;
90db21d34 Iyappan Subramanian 2017-01-31 77 }
90db21d34 Iyappan Subramanian 2017-01-31 78
90db21d34 Iyappan Subramanian 2017-01-31 79 static void xge_delete_desc_rings(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 80 {
90db21d34 Iyappan Subramanian 2017-01-31 81 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 82 struct device *dev = &pdata->pdev->dev;
90db21d34 Iyappan Subramanian 2017-01-31 83 struct xge_desc_ring *ring;
90db21d34 Iyappan Subramanian 2017-01-31 84
90db21d34 Iyappan Subramanian 2017-01-31 85 ring = pdata->tx_ring;
90db21d34 Iyappan Subramanian 2017-01-31 86 if (ring) {
90db21d34 Iyappan Subramanian 2017-01-31 87 if (ring->skbs)
90db21d34 Iyappan Subramanian 2017-01-31 88 devm_kfree(dev, ring->skbs);
90db21d34 Iyappan Subramanian 2017-01-31 89 if (ring->pkt_bufs)
90db21d34 Iyappan Subramanian 2017-01-31 90 devm_kfree(dev, ring->pkt_bufs);
90db21d34 Iyappan Subramanian 2017-01-31 91 devm_kfree(dev, ring);
90db21d34 Iyappan Subramanian 2017-01-31 92 }
90db21d34 Iyappan Subramanian 2017-01-31 93
90db21d34 Iyappan Subramanian 2017-01-31 94 ring = pdata->rx_ring;
90db21d34 Iyappan Subramanian 2017-01-31 95 if (ring) {
90db21d34 Iyappan Subramanian 2017-01-31 96 if (ring->skbs)
90db21d34 Iyappan Subramanian 2017-01-31 97 devm_kfree(dev, ring->skbs);
90db21d34 Iyappan Subramanian 2017-01-31 98 devm_kfree(dev, ring);
90db21d34 Iyappan Subramanian 2017-01-31 99 }
90db21d34 Iyappan Subramanian 2017-01-31 100 }
90db21d34 Iyappan Subramanian 2017-01-31 101
90db21d34 Iyappan Subramanian 2017-01-31 102 static struct xge_desc_ring *xge_create_desc_ring(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 103 {
90db21d34 Iyappan Subramanian 2017-01-31 104 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 105 struct device *dev = &pdata->pdev->dev;
90db21d34 Iyappan Subramanian 2017-01-31 106 struct xge_desc_ring *ring;
90db21d34 Iyappan Subramanian 2017-01-31 107 u16 size;
90db21d34 Iyappan Subramanian 2017-01-31 108
90db21d34 Iyappan Subramanian 2017-01-31 109 ring = devm_kzalloc(dev, sizeof(struct xge_desc_ring), GFP_KERNEL);
90db21d34 Iyappan Subramanian 2017-01-31 110 if (!ring)
90db21d34 Iyappan Subramanian 2017-01-31 111 return NULL;
90db21d34 Iyappan Subramanian 2017-01-31 112
90db21d34 Iyappan Subramanian 2017-01-31 113 ring->ndev = ndev;
90db21d34 Iyappan Subramanian 2017-01-31 114
90db21d34 Iyappan Subramanian 2017-01-31 115 size = XGENE_ENET_DESC_SIZE * XGENE_ENET_NUM_DESC;
90db21d34 Iyappan Subramanian 2017-01-31 116 ring->desc_addr = dmam_alloc_coherent(dev, size, &ring->dma_addr,
90db21d34 Iyappan Subramanian 2017-01-31 117 GFP_KERNEL | __GFP_ZERO);
90db21d34 Iyappan Subramanian 2017-01-31 118 if (!ring->desc_addr) {
90db21d34 Iyappan Subramanian 2017-01-31 119 devm_kfree(dev, ring);
90db21d34 Iyappan Subramanian 2017-01-31 120 return NULL;
90db21d34 Iyappan Subramanian 2017-01-31 121 }
90db21d34 Iyappan Subramanian 2017-01-31 122
90db21d34 Iyappan Subramanian 2017-01-31 123 xge_setup_desc(ring);
90db21d34 Iyappan Subramanian 2017-01-31 124
90db21d34 Iyappan Subramanian 2017-01-31 125 return ring;
90db21d34 Iyappan Subramanian 2017-01-31 126 }
90db21d34 Iyappan Subramanian 2017-01-31 127
90db21d34 Iyappan Subramanian 2017-01-31 128 static int xge_refill_buffers(struct net_device *ndev, u32 nbuf)
90db21d34 Iyappan Subramanian 2017-01-31 129 {
90db21d34 Iyappan Subramanian 2017-01-31 130 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 131 struct xge_desc_ring *ring = pdata->rx_ring;
90db21d34 Iyappan Subramanian 2017-01-31 132 const u8 slots = XGENE_ENET_NUM_DESC - 1;
90db21d34 Iyappan Subramanian 2017-01-31 133 struct device *dev = &pdata->pdev->dev;
90db21d34 Iyappan Subramanian 2017-01-31 134 struct xge_raw_desc *raw_desc;
90db21d34 Iyappan Subramanian 2017-01-31 135 u64 addr_lo, addr_hi;
90db21d34 Iyappan Subramanian 2017-01-31 136 u8 tail = ring->tail;
90db21d34 Iyappan Subramanian 2017-01-31 137 struct sk_buff *skb;
90db21d34 Iyappan Subramanian 2017-01-31 138 dma_addr_t dma_addr;
90db21d34 Iyappan Subramanian 2017-01-31 139 u16 len;
90db21d34 Iyappan Subramanian 2017-01-31 140 int i;
90db21d34 Iyappan Subramanian 2017-01-31 141
90db21d34 Iyappan Subramanian 2017-01-31 142 for (i = 0; i < nbuf; i++) {
90db21d34 Iyappan Subramanian 2017-01-31 143 raw_desc = &ring->raw_desc[tail];
90db21d34 Iyappan Subramanian 2017-01-31 144
90db21d34 Iyappan Subramanian 2017-01-31 145 len = XGENE_ENET_STD_MTU;
90db21d34 Iyappan Subramanian 2017-01-31 146 skb = netdev_alloc_skb(ndev, len);
90db21d34 Iyappan Subramanian 2017-01-31 147 if (unlikely(!skb))
90db21d34 Iyappan Subramanian 2017-01-31 148 return -ENOMEM;
90db21d34 Iyappan Subramanian 2017-01-31 149
90db21d34 Iyappan Subramanian 2017-01-31 150 dma_addr = dma_map_single(dev, skb->data, len, DMA_FROM_DEVICE);
90db21d34 Iyappan Subramanian 2017-01-31 151 if (dma_mapping_error(dev, dma_addr)) {
90db21d34 Iyappan Subramanian 2017-01-31 152 netdev_err(ndev, "DMA mapping error\n");
90db21d34 Iyappan Subramanian 2017-01-31 153 dev_kfree_skb_any(skb);
90db21d34 Iyappan Subramanian 2017-01-31 154 return -EINVAL;
90db21d34 Iyappan Subramanian 2017-01-31 155 }
90db21d34 Iyappan Subramanian 2017-01-31 156
90db21d34 Iyappan Subramanian 2017-01-31 157 addr_hi = GET_BITS(NEXT_DESC_ADDRH, le64_to_cpu(raw_desc->m1));
90db21d34 Iyappan Subramanian 2017-01-31 158 addr_lo = GET_BITS(NEXT_DESC_ADDRL, le64_to_cpu(raw_desc->m1));
90db21d34 Iyappan Subramanian 2017-01-31 159 raw_desc->m1 = cpu_to_le64(SET_BITS(NEXT_DESC_ADDRL, addr_lo) |
90db21d34 Iyappan Subramanian 2017-01-31 160 SET_BITS(NEXT_DESC_ADDRH, addr_hi) |
90db21d34 Iyappan Subramanian 2017-01-31 @161 SET_BITS(PKT_ADDRH,
90db21d34 Iyappan Subramanian 2017-01-31 @162 dma_addr >> PKT_ADDRL_LEN));
90db21d34 Iyappan Subramanian 2017-01-31 163
90db21d34 Iyappan Subramanian 2017-01-31 164 dma_wmb();
90db21d34 Iyappan Subramanian 2017-01-31 165 raw_desc->m0 = cpu_to_le64(SET_BITS(PKT_ADDRL, dma_addr) |
90db21d34 Iyappan Subramanian 2017-01-31 166 SET_BITS(E, 1));
dde456a0a Iyappan Subramanian 2017-01-31 167
90db21d34 Iyappan Subramanian 2017-01-31 168 ring->skbs[tail] = skb;
90db21d34 Iyappan Subramanian 2017-01-31 169 tail = (tail + 1) & slots;
90db21d34 Iyappan Subramanian 2017-01-31 170 }
dde456a0a Iyappan Subramanian 2017-01-31 171 xge_wr_csr(pdata, DMARXCTRL, 1);
90db21d34 Iyappan Subramanian 2017-01-31 172
90db21d34 Iyappan Subramanian 2017-01-31 173 ring->tail = tail;
90db21d34 Iyappan Subramanian 2017-01-31 174
90db21d34 Iyappan Subramanian 2017-01-31 175 return 0;
90db21d34 Iyappan Subramanian 2017-01-31 176 }
90db21d34 Iyappan Subramanian 2017-01-31 177
90db21d34 Iyappan Subramanian 2017-01-31 178 static int xge_create_desc_rings(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 179 {
90db21d34 Iyappan Subramanian 2017-01-31 180 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 181 struct device *dev = &pdata->pdev->dev;
90db21d34 Iyappan Subramanian 2017-01-31 182 struct xge_desc_ring *ring;
90db21d34 Iyappan Subramanian 2017-01-31 183 int ret;
90db21d34 Iyappan Subramanian 2017-01-31 184
90db21d34 Iyappan Subramanian 2017-01-31 185 /* create tx ring */
90db21d34 Iyappan Subramanian 2017-01-31 186 ring = xge_create_desc_ring(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 187 if (!ring)
90db21d34 Iyappan Subramanian 2017-01-31 188 return -ENOMEM;
90db21d34 Iyappan Subramanian 2017-01-31 189
90db21d34 Iyappan Subramanian 2017-01-31 190 ring->skbs = devm_kcalloc(dev, XGENE_ENET_NUM_DESC,
90db21d34 Iyappan Subramanian 2017-01-31 191 sizeof(struct sk_buff *), GFP_KERNEL);
90db21d34 Iyappan Subramanian 2017-01-31 192 if (!ring->skbs)
90db21d34 Iyappan Subramanian 2017-01-31 193 goto err;
90db21d34 Iyappan Subramanian 2017-01-31 194
90db21d34 Iyappan Subramanian 2017-01-31 195 ring->pkt_bufs = devm_kcalloc(dev, XGENE_ENET_NUM_DESC,
90db21d34 Iyappan Subramanian 2017-01-31 196 sizeof(void *), GFP_KERNEL);
90db21d34 Iyappan Subramanian 2017-01-31 197 if (!ring->pkt_bufs)
90db21d34 Iyappan Subramanian 2017-01-31 198 goto err;
90db21d34 Iyappan Subramanian 2017-01-31 199
90db21d34 Iyappan Subramanian 2017-01-31 200 pdata->tx_ring = ring;
90db21d34 Iyappan Subramanian 2017-01-31 201 xge_update_tx_desc_addr(pdata);
90db21d34 Iyappan Subramanian 2017-01-31 202
90db21d34 Iyappan Subramanian 2017-01-31 203 /* create rx ring */
90db21d34 Iyappan Subramanian 2017-01-31 204 ring = xge_create_desc_ring(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 205 if (!ring)
90db21d34 Iyappan Subramanian 2017-01-31 206 goto err;
90db21d34 Iyappan Subramanian 2017-01-31 207
90db21d34 Iyappan Subramanian 2017-01-31 208 ring->skbs = devm_kcalloc(dev, XGENE_ENET_NUM_DESC,
90db21d34 Iyappan Subramanian 2017-01-31 209 sizeof(struct sk_buff *), GFP_KERNEL);
90db21d34 Iyappan Subramanian 2017-01-31 210 if (!ring->skbs)
90db21d34 Iyappan Subramanian 2017-01-31 211 goto err;
90db21d34 Iyappan Subramanian 2017-01-31 212
90db21d34 Iyappan Subramanian 2017-01-31 213 pdata->rx_ring = ring;
90db21d34 Iyappan Subramanian 2017-01-31 214 xge_update_rx_desc_addr(pdata);
90db21d34 Iyappan Subramanian 2017-01-31 215
90db21d34 Iyappan Subramanian 2017-01-31 216 ret = xge_refill_buffers(ndev, XGENE_ENET_NUM_DESC);
90db21d34 Iyappan Subramanian 2017-01-31 217 if (!ret)
90db21d34 Iyappan Subramanian 2017-01-31 218 return 0;
90db21d34 Iyappan Subramanian 2017-01-31 219
90db21d34 Iyappan Subramanian 2017-01-31 220 err:
90db21d34 Iyappan Subramanian 2017-01-31 221 xge_delete_desc_rings(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 222
90db21d34 Iyappan Subramanian 2017-01-31 223 return -ENOMEM;
90db21d34 Iyappan Subramanian 2017-01-31 224 }
90db21d34 Iyappan Subramanian 2017-01-31 225
90db21d34 Iyappan Subramanian 2017-01-31 226 static int xge_init_hw(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 227 {
90db21d34 Iyappan Subramanian 2017-01-31 228 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 229 int ret;
90db21d34 Iyappan Subramanian 2017-01-31 230
90db21d34 Iyappan Subramanian 2017-01-31 231 ret = xge_port_reset(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 232 if (ret)
90db21d34 Iyappan Subramanian 2017-01-31 233 return ret;
90db21d34 Iyappan Subramanian 2017-01-31 234
90db21d34 Iyappan Subramanian 2017-01-31 235 xge_create_desc_rings(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 236 xge_port_init(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 237 pdata->nbufs = NUM_BUFS;
90db21d34 Iyappan Subramanian 2017-01-31 238
90db21d34 Iyappan Subramanian 2017-01-31 239 return 0;
90db21d34 Iyappan Subramanian 2017-01-31 240 }
90db21d34 Iyappan Subramanian 2017-01-31 241
90db21d34 Iyappan Subramanian 2017-01-31 242 static irqreturn_t xge_irq(const int irq, void *data)
90db21d34 Iyappan Subramanian 2017-01-31 243 {
90db21d34 Iyappan Subramanian 2017-01-31 244 struct xge_pdata *pdata = data;
90db21d34 Iyappan Subramanian 2017-01-31 245
90db21d34 Iyappan Subramanian 2017-01-31 246 if (napi_schedule_prep(&pdata->napi)) {
90db21d34 Iyappan Subramanian 2017-01-31 247 xge_intr_disable(pdata);
90db21d34 Iyappan Subramanian 2017-01-31 248 __napi_schedule(&pdata->napi);
90db21d34 Iyappan Subramanian 2017-01-31 249 }
90db21d34 Iyappan Subramanian 2017-01-31 250
90db21d34 Iyappan Subramanian 2017-01-31 251 return IRQ_HANDLED;
90db21d34 Iyappan Subramanian 2017-01-31 252 }
90db21d34 Iyappan Subramanian 2017-01-31 253
90db21d34 Iyappan Subramanian 2017-01-31 254 static int xge_request_irq(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 255 {
90db21d34 Iyappan Subramanian 2017-01-31 256 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 257 struct device *dev = &pdata->pdev->dev;
90db21d34 Iyappan Subramanian 2017-01-31 258 int ret;
90db21d34 Iyappan Subramanian 2017-01-31 259
90db21d34 Iyappan Subramanian 2017-01-31 260 snprintf(pdata->irq_name, IRQ_ID_SIZE, "%s", ndev->name);
90db21d34 Iyappan Subramanian 2017-01-31 261
90db21d34 Iyappan Subramanian 2017-01-31 262 ret = devm_request_irq(dev, pdata->resources.irq, xge_irq,
90db21d34 Iyappan Subramanian 2017-01-31 263 0, pdata->irq_name, pdata);
90db21d34 Iyappan Subramanian 2017-01-31 264 if (ret)
90db21d34 Iyappan Subramanian 2017-01-31 265 netdev_err(ndev, "Failed to request irq %s\n", pdata->irq_name);
90db21d34 Iyappan Subramanian 2017-01-31 266
90db21d34 Iyappan Subramanian 2017-01-31 267 return ret;
90db21d34 Iyappan Subramanian 2017-01-31 268 }
90db21d34 Iyappan Subramanian 2017-01-31 269
90db21d34 Iyappan Subramanian 2017-01-31 270 static void xge_free_irq(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 271 {
90db21d34 Iyappan Subramanian 2017-01-31 272 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 273 struct device *dev = &pdata->pdev->dev;
90db21d34 Iyappan Subramanian 2017-01-31 274
90db21d34 Iyappan Subramanian 2017-01-31 275 devm_free_irq(dev, pdata->resources.irq, pdata);
90db21d34 Iyappan Subramanian 2017-01-31 276 }
90db21d34 Iyappan Subramanian 2017-01-31 277
90db21d34 Iyappan Subramanian 2017-01-31 278 static int xge_open(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 279 {
90db21d34 Iyappan Subramanian 2017-01-31 280 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 281 int ret;
90db21d34 Iyappan Subramanian 2017-01-31 282
dde456a0a Iyappan Subramanian 2017-01-31 283 napi_enable(&pdata->napi);
dde456a0a Iyappan Subramanian 2017-01-31 284
90db21d34 Iyappan Subramanian 2017-01-31 285 ret = xge_request_irq(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 286 if (ret)
90db21d34 Iyappan Subramanian 2017-01-31 287 return ret;
90db21d34 Iyappan Subramanian 2017-01-31 288
90db21d34 Iyappan Subramanian 2017-01-31 289 xge_intr_enable(pdata);
90db21d34 Iyappan Subramanian 2017-01-31 290
90db21d34 Iyappan Subramanian 2017-01-31 291 xge_mac_enable(pdata);
90db21d34 Iyappan Subramanian 2017-01-31 292 netif_start_queue(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 293
90db21d34 Iyappan Subramanian 2017-01-31 294 return 0;
90db21d34 Iyappan Subramanian 2017-01-31 295 }
90db21d34 Iyappan Subramanian 2017-01-31 296
90db21d34 Iyappan Subramanian 2017-01-31 297 static int xge_close(struct net_device *ndev)
90db21d34 Iyappan Subramanian 2017-01-31 298 {
90db21d34 Iyappan Subramanian 2017-01-31 299 struct xge_pdata *pdata = netdev_priv(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 300
90db21d34 Iyappan Subramanian 2017-01-31 301 netif_stop_queue(ndev);
90db21d34 Iyappan Subramanian 2017-01-31 302 xge_mac_disable(pdata);
90db21d34 Iyappan Subramanian 2017-01-31 303
dde456a0a Iyappan Subramanian 2017-01-31 304 xge_intr_disable(pdata);
90db21d34 Iyappan Subramanian 2017-01-31 305 xge_free_irq(ndev);
dde456a0a Iyappan Subramanian 2017-01-31 306 napi_disable(&pdata->napi);
90db21d34 Iyappan Subramanian 2017-01-31 307
90db21d34 Iyappan Subramanian 2017-01-31 308 return 0;
90db21d34 Iyappan Subramanian 2017-01-31 309 }
90db21d34 Iyappan Subramanian 2017-01-31 310
dde456a0a Iyappan Subramanian 2017-01-31 311 static netdev_tx_t xge_start_xmit(struct sk_buff *skb, struct net_device *ndev)
dde456a0a Iyappan Subramanian 2017-01-31 312 {
dde456a0a Iyappan Subramanian 2017-01-31 313 struct xge_pdata *pdata = netdev_priv(ndev);
dde456a0a Iyappan Subramanian 2017-01-31 314 struct device *dev = &pdata->pdev->dev;
dde456a0a Iyappan Subramanian 2017-01-31 315 static dma_addr_t dma_addr;
dde456a0a Iyappan Subramanian 2017-01-31 316 struct xge_desc_ring *tx_ring;
dde456a0a Iyappan Subramanian 2017-01-31 317 struct xge_raw_desc *raw_desc;
dde456a0a Iyappan Subramanian 2017-01-31 318 u64 addr_lo, addr_hi;
dde456a0a Iyappan Subramanian 2017-01-31 319 void *pkt_buf;
dde456a0a Iyappan Subramanian 2017-01-31 320 u8 tail;
dde456a0a Iyappan Subramanian 2017-01-31 321 u16 len;
dde456a0a Iyappan Subramanian 2017-01-31 322
dde456a0a Iyappan Subramanian 2017-01-31 323 tx_ring = pdata->tx_ring;
dde456a0a Iyappan Subramanian 2017-01-31 324 tail = tx_ring->tail;
dde456a0a Iyappan Subramanian 2017-01-31 325 len = skb_headlen(skb);
dde456a0a Iyappan Subramanian 2017-01-31 326 raw_desc = &tx_ring->raw_desc[tail];
dde456a0a Iyappan Subramanian 2017-01-31 327
dde456a0a Iyappan Subramanian 2017-01-31 328 /* Tx descriptor not available */
dde456a0a Iyappan Subramanian 2017-01-31 329 if (!GET_BITS(E, le64_to_cpu(raw_desc->m0)) ||
dde456a0a Iyappan Subramanian 2017-01-31 330 GET_BITS(PKT_SIZE, le64_to_cpu(raw_desc->m0)))
dde456a0a Iyappan Subramanian 2017-01-31 331 return NETDEV_TX_BUSY;
dde456a0a Iyappan Subramanian 2017-01-31 332
dde456a0a Iyappan Subramanian 2017-01-31 333 /* Packet buffers should be 64B aligned */
dde456a0a Iyappan Subramanian 2017-01-31 334 pkt_buf = dma_alloc_coherent(dev, XGENE_ENET_STD_MTU, &dma_addr,
dde456a0a Iyappan Subramanian 2017-01-31 335 GFP_ATOMIC);
dde456a0a Iyappan Subramanian 2017-01-31 336 if (unlikely(!pkt_buf))
dde456a0a Iyappan Subramanian 2017-01-31 337 goto out;
dde456a0a Iyappan Subramanian 2017-01-31 338
dde456a0a Iyappan Subramanian 2017-01-31 339 memcpy(pkt_buf, skb->data, len);
dde456a0a Iyappan Subramanian 2017-01-31 340
dde456a0a Iyappan Subramanian 2017-01-31 341 addr_hi = GET_BITS(NEXT_DESC_ADDRH, le64_to_cpu(raw_desc->m1));
dde456a0a Iyappan Subramanian 2017-01-31 342 addr_lo = GET_BITS(NEXT_DESC_ADDRL, le64_to_cpu(raw_desc->m1));
dde456a0a Iyappan Subramanian 2017-01-31 343 raw_desc->m1 = cpu_to_le64(SET_BITS(NEXT_DESC_ADDRL, addr_lo) |
dde456a0a Iyappan Subramanian 2017-01-31 344 SET_BITS(NEXT_DESC_ADDRH, addr_hi) |
dde456a0a Iyappan Subramanian 2017-01-31 @345 SET_BITS(PKT_ADDRH,
dde456a0a Iyappan Subramanian 2017-01-31 346 dma_addr >> PKT_ADDRL_LEN));
dde456a0a Iyappan Subramanian 2017-01-31 347
dde456a0a Iyappan Subramanian 2017-01-31 348 dma_wmb();
:::::: The code at line 162 was first introduced by commit
:::::: 90db21d344b12f41c93e821a69a96a60453e9dd8 drivers: net: xgene-v2: Add base driver
:::::: TO: Iyappan Subramanian <isubramanian@....com>
:::::: CC: 0day robot <fengguang.wu@...el.com>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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