Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | This is the driver for the ST MAC 10/100/1000 on-chip Ethernet controllers. |
| 3 | ST Ethernet IPs are built around a Synopsys IP Core. |
| 4 | |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 5 | Copyright(C) 2007-2011 STMicroelectronics Ltd |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 6 | |
| 7 | This program is free software; you can redistribute it and/or modify it |
| 8 | under the terms and conditions of the GNU General Public License, |
| 9 | version 2, as published by the Free Software Foundation. |
| 10 | |
| 11 | This program is distributed in the hope it will be useful, but WITHOUT |
| 12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 14 | more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License along with |
| 17 | this program; if not, write to the Free Software Foundation, Inc., |
| 18 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | |
| 20 | The full GNU General Public License is included in this distribution in |
| 21 | the file called "COPYING". |
| 22 | |
| 23 | Author: Giuseppe Cavallaro <peppe.cavallaro@st.com> |
| 24 | |
| 25 | Documentation available at: |
| 26 | http://www.stlinux.com |
| 27 | Support available at: |
| 28 | https://bugzilla.stlinux.com/ |
| 29 | *******************************************************************************/ |
| 30 | |
Viresh Kumar | 6a81c26 | 2012-07-30 14:39:41 -0700 | [diff] [blame] | 31 | #include <linux/clk.h> |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 32 | #include <linux/kernel.h> |
| 33 | #include <linux/interrupt.h> |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 34 | #include <linux/ip.h> |
| 35 | #include <linux/tcp.h> |
| 36 | #include <linux/skbuff.h> |
| 37 | #include <linux/ethtool.h> |
| 38 | #include <linux/if_ether.h> |
| 39 | #include <linux/crc32.h> |
| 40 | #include <linux/mii.h> |
Jiri Pirko | 0178934 | 2011-08-16 06:29:00 +0000 | [diff] [blame] | 41 | #include <linux/if.h> |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 42 | #include <linux/if_vlan.h> |
| 43 | #include <linux/dma-mapping.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 44 | #include <linux/slab.h> |
Paul Gortmaker | 70c7160 | 2011-05-22 16:47:17 -0400 | [diff] [blame] | 45 | #include <linux/prefetch.h> |
Srinivas Kandagatla | db88f10 | 2014-01-16 10:52:52 +0000 | [diff] [blame] | 46 | #include <linux/pinctrl/consumer.h> |
Giuseppe CAVALLARO | 50fb4f74 | 2014-11-04 15:49:33 +0100 | [diff] [blame] | 47 | #ifdef CONFIG_DEBUG_FS |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 48 | #include <linux/debugfs.h> |
| 49 | #include <linux/seq_file.h> |
Giuseppe CAVALLARO | 50fb4f74 | 2014-11-04 15:49:33 +0100 | [diff] [blame] | 50 | #endif /* CONFIG_DEBUG_FS */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 51 | #include <linux/net_tstamp.h> |
| 52 | #include "stmmac_ptp.h" |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 53 | #include "stmmac.h" |
Chen-Yu Tsai | c5e4ddb | 2014-01-17 21:24:41 +0800 | [diff] [blame] | 54 | #include <linux/reset.h> |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 55 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 56 | #define STMMAC_ALIGN(x) L1_CACHE_ALIGN(x) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 57 | |
| 58 | /* Module parameters */ |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 59 | #define TX_TIMEO 5000 |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 60 | static int watchdog = TX_TIMEO; |
| 61 | module_param(watchdog, int, S_IRUGO | S_IWUSR); |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 62 | MODULE_PARM_DESC(watchdog, "Transmit timeout in milliseconds (default 5s)"); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 63 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 64 | static int debug = -1; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 65 | module_param(debug, int, S_IRUGO | S_IWUSR); |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 66 | MODULE_PARM_DESC(debug, "Message Level (-1: default, 0: no output, 16: all)"); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 67 | |
stephen hemminger | 47d1f71 | 2013-12-30 10:38:57 -0800 | [diff] [blame] | 68 | static int phyaddr = -1; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 69 | module_param(phyaddr, int, S_IRUGO); |
| 70 | MODULE_PARM_DESC(phyaddr, "Physical device address"); |
| 71 | |
| 72 | #define DMA_TX_SIZE 256 |
| 73 | static int dma_txsize = DMA_TX_SIZE; |
| 74 | module_param(dma_txsize, int, S_IRUGO | S_IWUSR); |
| 75 | MODULE_PARM_DESC(dma_txsize, "Number of descriptors in the TX list"); |
| 76 | |
| 77 | #define DMA_RX_SIZE 256 |
| 78 | static int dma_rxsize = DMA_RX_SIZE; |
| 79 | module_param(dma_rxsize, int, S_IRUGO | S_IWUSR); |
| 80 | MODULE_PARM_DESC(dma_rxsize, "Number of descriptors in the RX list"); |
| 81 | |
| 82 | static int flow_ctrl = FLOW_OFF; |
| 83 | module_param(flow_ctrl, int, S_IRUGO | S_IWUSR); |
| 84 | MODULE_PARM_DESC(flow_ctrl, "Flow control ability [on/off]"); |
| 85 | |
| 86 | static int pause = PAUSE_TIME; |
| 87 | module_param(pause, int, S_IRUGO | S_IWUSR); |
| 88 | MODULE_PARM_DESC(pause, "Flow Control Pause Time"); |
| 89 | |
| 90 | #define TC_DEFAULT 64 |
| 91 | static int tc = TC_DEFAULT; |
| 92 | module_param(tc, int, S_IRUGO | S_IWUSR); |
| 93 | MODULE_PARM_DESC(tc, "DMA threshold control value"); |
| 94 | |
Giuseppe CAVALLARO | d916701 | 2014-03-10 13:40:32 +0100 | [diff] [blame] | 95 | #define DEFAULT_BUFSIZE 1536 |
| 96 | static int buf_sz = DEFAULT_BUFSIZE; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 97 | module_param(buf_sz, int, S_IRUGO | S_IWUSR); |
| 98 | MODULE_PARM_DESC(buf_sz, "DMA buffer size"); |
| 99 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 100 | static const u32 default_msg_level = (NETIF_MSG_DRV | NETIF_MSG_PROBE | |
| 101 | NETIF_MSG_LINK | NETIF_MSG_IFUP | |
| 102 | NETIF_MSG_IFDOWN | NETIF_MSG_TIMER); |
| 103 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 104 | #define STMMAC_DEFAULT_LPI_TIMER 1000 |
| 105 | static int eee_timer = STMMAC_DEFAULT_LPI_TIMER; |
| 106 | module_param(eee_timer, int, S_IRUGO | S_IWUSR); |
| 107 | MODULE_PARM_DESC(eee_timer, "LPI tx expiration time in msec"); |
Giuseppe CAVALLARO | f5351ef | 2013-06-18 07:03:23 +0200 | [diff] [blame] | 108 | #define STMMAC_LPI_T(x) (jiffies + msecs_to_jiffies(x)) |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 109 | |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 110 | /* By default the driver will use the ring mode to manage tx and rx descriptors |
| 111 | * but passing this value so user can force to use the chain instead of the ring |
| 112 | */ |
| 113 | static unsigned int chain_mode; |
| 114 | module_param(chain_mode, int, S_IRUGO); |
| 115 | MODULE_PARM_DESC(chain_mode, "To use chain instead of ring mode"); |
| 116 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 117 | static irqreturn_t stmmac_interrupt(int irq, void *dev_id); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 118 | |
Giuseppe CAVALLARO | 50fb4f74 | 2014-11-04 15:49:33 +0100 | [diff] [blame] | 119 | #ifdef CONFIG_DEBUG_FS |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 120 | static int stmmac_init_fs(struct net_device *dev); |
| 121 | static void stmmac_exit_fs(void); |
| 122 | #endif |
| 123 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 124 | #define STMMAC_COAL_TIMER(x) (jiffies + usecs_to_jiffies(x)) |
| 125 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 126 | /** |
| 127 | * stmmac_verify_args - verify the driver parameters. |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 128 | * Description: it checks the driver parameters and set a default in case of |
| 129 | * errors. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 130 | */ |
| 131 | static void stmmac_verify_args(void) |
| 132 | { |
| 133 | if (unlikely(watchdog < 0)) |
| 134 | watchdog = TX_TIMEO; |
| 135 | if (unlikely(dma_rxsize < 0)) |
| 136 | dma_rxsize = DMA_RX_SIZE; |
| 137 | if (unlikely(dma_txsize < 0)) |
| 138 | dma_txsize = DMA_TX_SIZE; |
Giuseppe CAVALLARO | d916701 | 2014-03-10 13:40:32 +0100 | [diff] [blame] | 139 | if (unlikely((buf_sz < DEFAULT_BUFSIZE) || (buf_sz > BUF_SIZE_16KiB))) |
| 140 | buf_sz = DEFAULT_BUFSIZE; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 141 | if (unlikely(flow_ctrl > 1)) |
| 142 | flow_ctrl = FLOW_AUTO; |
| 143 | else if (likely(flow_ctrl < 0)) |
| 144 | flow_ctrl = FLOW_OFF; |
| 145 | if (unlikely((pause < 0) || (pause > 0xffff))) |
| 146 | pause = PAUSE_TIME; |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 147 | if (eee_timer < 0) |
| 148 | eee_timer = STMMAC_DEFAULT_LPI_TIMER; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 149 | } |
| 150 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 151 | /** |
| 152 | * stmmac_clk_csr_set - dynamically set the MDC clock |
| 153 | * @priv: driver private structure |
| 154 | * Description: this is to dynamically set the MDC clock according to the csr |
| 155 | * clock input. |
| 156 | * Note: |
| 157 | * If a specific clk_csr value is passed from the platform |
| 158 | * this means that the CSR Clock Range selection cannot be |
| 159 | * changed at run-time and it is fixed (as reported in the driver |
| 160 | * documentation). Viceversa the driver will try to set the MDC |
| 161 | * clock dynamically according to the actual clock input. |
| 162 | */ |
Giuseppe CAVALLARO | cd7201f | 2012-04-04 04:33:27 +0000 | [diff] [blame] | 163 | static void stmmac_clk_csr_set(struct stmmac_priv *priv) |
| 164 | { |
Giuseppe CAVALLARO | cd7201f | 2012-04-04 04:33:27 +0000 | [diff] [blame] | 165 | u32 clk_rate; |
| 166 | |
| 167 | clk_rate = clk_get_rate(priv->stmmac_clk); |
| 168 | |
| 169 | /* Platform provided default clk_csr would be assumed valid |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 170 | * for all other cases except for the below mentioned ones. |
| 171 | * For values higher than the IEEE 802.3 specified frequency |
| 172 | * we can not estimate the proper divider as it is not known |
| 173 | * the frequency of clk_csr_i. So we do not change the default |
| 174 | * divider. |
| 175 | */ |
Giuseppe CAVALLARO | cd7201f | 2012-04-04 04:33:27 +0000 | [diff] [blame] | 176 | if (!(priv->clk_csr & MAC_CSR_H_FRQ_MASK)) { |
| 177 | if (clk_rate < CSR_F_35M) |
| 178 | priv->clk_csr = STMMAC_CSR_20_35M; |
| 179 | else if ((clk_rate >= CSR_F_35M) && (clk_rate < CSR_F_60M)) |
| 180 | priv->clk_csr = STMMAC_CSR_35_60M; |
| 181 | else if ((clk_rate >= CSR_F_60M) && (clk_rate < CSR_F_100M)) |
| 182 | priv->clk_csr = STMMAC_CSR_60_100M; |
| 183 | else if ((clk_rate >= CSR_F_100M) && (clk_rate < CSR_F_150M)) |
| 184 | priv->clk_csr = STMMAC_CSR_100_150M; |
| 185 | else if ((clk_rate >= CSR_F_150M) && (clk_rate < CSR_F_250M)) |
| 186 | priv->clk_csr = STMMAC_CSR_150_250M; |
| 187 | else if ((clk_rate >= CSR_F_250M) && (clk_rate < CSR_F_300M)) |
| 188 | priv->clk_csr = STMMAC_CSR_250_300M; |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 189 | } |
Giuseppe CAVALLARO | cd7201f | 2012-04-04 04:33:27 +0000 | [diff] [blame] | 190 | } |
| 191 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 192 | static void print_pkt(unsigned char *buf, int len) |
| 193 | { |
Andy Shevchenko | 424c4f7 | 2014-11-07 16:53:12 +0200 | [diff] [blame] | 194 | pr_debug("len = %d byte, buf addr: 0x%p\n", len, buf); |
| 195 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, buf, len); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 196 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 197 | |
| 198 | /* minimum number of free TX descriptors required to wake up TX process */ |
| 199 | #define STMMAC_TX_THRESH(x) (x->dma_tx_size/4) |
| 200 | |
| 201 | static inline u32 stmmac_tx_avail(struct stmmac_priv *priv) |
| 202 | { |
| 203 | return priv->dirty_tx + priv->dma_tx_size - priv->cur_tx - 1; |
| 204 | } |
| 205 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 206 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 207 | * stmmac_hw_fix_mac_speed - callback for speed selection |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 208 | * @priv: driver private structure |
| 209 | * Description: on some platforms (e.g. ST), some HW system configuraton |
| 210 | * registers have to be set according to the link speed negotiated. |
Giuseppe CAVALLARO | 9dfeb4d | 2010-11-24 02:37:58 +0000 | [diff] [blame] | 211 | */ |
| 212 | static inline void stmmac_hw_fix_mac_speed(struct stmmac_priv *priv) |
| 213 | { |
| 214 | struct phy_device *phydev = priv->phydev; |
| 215 | |
| 216 | if (likely(priv->plat->fix_mac_speed)) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 217 | priv->plat->fix_mac_speed(priv->plat->bsp_priv, phydev->speed); |
Giuseppe CAVALLARO | 9dfeb4d | 2010-11-24 02:37:58 +0000 | [diff] [blame] | 218 | } |
| 219 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 220 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 221 | * stmmac_enable_eee_mode - check and enter in LPI mode |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 222 | * @priv: driver private structure |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 223 | * Description: this function is to verify and enter in LPI mode in case of |
| 224 | * EEE. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 225 | */ |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 226 | static void stmmac_enable_eee_mode(struct stmmac_priv *priv) |
| 227 | { |
| 228 | /* Check and enter in LPI mode */ |
| 229 | if ((priv->dirty_tx == priv->cur_tx) && |
| 230 | (priv->tx_path_in_lpi_mode == false)) |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 231 | priv->hw->mac->set_eee_mode(priv->hw); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 232 | } |
| 233 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 234 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 235 | * stmmac_disable_eee_mode - disable and exit from LPI mode |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 236 | * @priv: driver private structure |
| 237 | * Description: this function is to exit and disable EEE in case of |
| 238 | * LPI state is true. This is called by the xmit. |
| 239 | */ |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 240 | void stmmac_disable_eee_mode(struct stmmac_priv *priv) |
| 241 | { |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 242 | priv->hw->mac->reset_eee_mode(priv->hw); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 243 | del_timer_sync(&priv->eee_ctrl_timer); |
| 244 | priv->tx_path_in_lpi_mode = false; |
| 245 | } |
| 246 | |
| 247 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 248 | * stmmac_eee_ctrl_timer - EEE TX SW timer. |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 249 | * @arg : data hook |
| 250 | * Description: |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 251 | * if there is no data transfer and if we are not in LPI state, |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 252 | * then MAC Transmitter can be moved to LPI state. |
| 253 | */ |
| 254 | static void stmmac_eee_ctrl_timer(unsigned long arg) |
| 255 | { |
| 256 | struct stmmac_priv *priv = (struct stmmac_priv *)arg; |
| 257 | |
| 258 | stmmac_enable_eee_mode(priv); |
Giuseppe CAVALLARO | f5351ef | 2013-06-18 07:03:23 +0200 | [diff] [blame] | 259 | mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(eee_timer)); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 263 | * stmmac_eee_init - init EEE |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 264 | * @priv: driver private structure |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 265 | * Description: |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 266 | * if the GMAC supports the EEE (from the HW cap reg) and the phy device |
| 267 | * can also manage EEE, this function enable the LPI state and start related |
| 268 | * timer. |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 269 | */ |
| 270 | bool stmmac_eee_init(struct stmmac_priv *priv) |
| 271 | { |
Giuseppe CAVALLARO | 56b88c2 | 2014-08-28 08:11:43 +0200 | [diff] [blame] | 272 | char *phy_bus_name = priv->plat->phy_bus_name; |
Giuseppe CAVALLARO | 4741cf9 | 2014-11-04 17:08:08 +0100 | [diff] [blame] | 273 | unsigned long flags; |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 274 | bool ret = false; |
| 275 | |
Giuseppe CAVALLARO | f5351ef | 2013-06-18 07:03:23 +0200 | [diff] [blame] | 276 | /* Using PCS we cannot dial with the phy registers at this stage |
| 277 | * so we do not support extra feature like EEE. |
| 278 | */ |
| 279 | if ((priv->pcs == STMMAC_PCS_RGMII) || (priv->pcs == STMMAC_PCS_TBI) || |
| 280 | (priv->pcs == STMMAC_PCS_RTBI)) |
| 281 | goto out; |
| 282 | |
Giuseppe CAVALLARO | 56b88c2 | 2014-08-28 08:11:43 +0200 | [diff] [blame] | 283 | /* Never init EEE in case of a switch is attached */ |
| 284 | if (phy_bus_name && (!strcmp(phy_bus_name, "fixed"))) |
| 285 | goto out; |
| 286 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 287 | /* MAC core supports the EEE feature. */ |
| 288 | if (priv->dma_cap.eee) { |
Giuseppe CAVALLARO | 83bf79b | 2014-03-10 13:40:31 +0100 | [diff] [blame] | 289 | int tx_lpi_timer = priv->tx_lpi_timer; |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 290 | |
Giuseppe CAVALLARO | 83bf79b | 2014-03-10 13:40:31 +0100 | [diff] [blame] | 291 | /* Check if the PHY supports EEE */ |
| 292 | if (phy_init_eee(priv->phydev, 1)) { |
| 293 | /* To manage at run-time if the EEE cannot be supported |
| 294 | * anymore (for example because the lp caps have been |
| 295 | * changed). |
| 296 | * In that case the driver disable own timers. |
| 297 | */ |
Giuseppe CAVALLARO | 4741cf9 | 2014-11-04 17:08:08 +0100 | [diff] [blame] | 298 | spin_lock_irqsave(&priv->lock, flags); |
Giuseppe CAVALLARO | 83bf79b | 2014-03-10 13:40:31 +0100 | [diff] [blame] | 299 | if (priv->eee_active) { |
| 300 | pr_debug("stmmac: disable EEE\n"); |
| 301 | del_timer_sync(&priv->eee_ctrl_timer); |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 302 | priv->hw->mac->set_eee_timer(priv->hw, 0, |
Giuseppe CAVALLARO | 83bf79b | 2014-03-10 13:40:31 +0100 | [diff] [blame] | 303 | tx_lpi_timer); |
| 304 | } |
| 305 | priv->eee_active = 0; |
Giuseppe CAVALLARO | 4741cf9 | 2014-11-04 17:08:08 +0100 | [diff] [blame] | 306 | spin_unlock_irqrestore(&priv->lock, flags); |
Giuseppe CAVALLARO | 83bf79b | 2014-03-10 13:40:31 +0100 | [diff] [blame] | 307 | goto out; |
| 308 | } |
| 309 | /* Activate the EEE and start timers */ |
Giuseppe CAVALLARO | 4741cf9 | 2014-11-04 17:08:08 +0100 | [diff] [blame] | 310 | spin_lock_irqsave(&priv->lock, flags); |
Giuseppe CAVALLARO | f5351ef | 2013-06-18 07:03:23 +0200 | [diff] [blame] | 311 | if (!priv->eee_active) { |
| 312 | priv->eee_active = 1; |
Vaishali Thakkar | ccb36da | 2015-02-28 00:12:34 +0530 | [diff] [blame] | 313 | setup_timer(&priv->eee_ctrl_timer, |
| 314 | stmmac_eee_ctrl_timer, |
| 315 | (unsigned long)priv); |
| 316 | mod_timer(&priv->eee_ctrl_timer, |
| 317 | STMMAC_LPI_T(eee_timer)); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 318 | |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 319 | priv->hw->mac->set_eee_timer(priv->hw, |
Giuseppe CAVALLARO | f5351ef | 2013-06-18 07:03:23 +0200 | [diff] [blame] | 320 | STMMAC_DEFAULT_LIT_LS, |
Giuseppe CAVALLARO | 83bf79b | 2014-03-10 13:40:31 +0100 | [diff] [blame] | 321 | tx_lpi_timer); |
Giuseppe CAVALLARO | 7196535 | 2014-08-28 08:11:44 +0200 | [diff] [blame] | 322 | } |
| 323 | /* Set HW EEE according to the speed */ |
| 324 | priv->hw->mac->set_eee_pls(priv->hw, priv->phydev->link); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 325 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 326 | ret = true; |
Giuseppe CAVALLARO | 4741cf9 | 2014-11-04 17:08:08 +0100 | [diff] [blame] | 327 | spin_unlock_irqrestore(&priv->lock, flags); |
| 328 | |
| 329 | pr_debug("stmmac: Energy-Efficient Ethernet initialized\n"); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 330 | } |
| 331 | out: |
| 332 | return ret; |
| 333 | } |
| 334 | |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 335 | /* stmmac_get_tx_hwtstamp - get HW TX timestamps |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 336 | * @priv: driver private structure |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 337 | * @entry : descriptor index to be used. |
| 338 | * @skb : the socket buffer |
| 339 | * Description : |
| 340 | * This function will read timestamp from the descriptor & pass it to stack. |
| 341 | * and also perform some sanity checks. |
| 342 | */ |
| 343 | static void stmmac_get_tx_hwtstamp(struct stmmac_priv *priv, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 344 | unsigned int entry, struct sk_buff *skb) |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 345 | { |
| 346 | struct skb_shared_hwtstamps shhwtstamp; |
| 347 | u64 ns; |
| 348 | void *desc = NULL; |
| 349 | |
| 350 | if (!priv->hwts_tx_en) |
| 351 | return; |
| 352 | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 353 | /* exit if skb doesn't support hw tstamp */ |
damuzi000 | 75e4364 | 2014-01-17 23:47:59 +0800 | [diff] [blame] | 354 | if (likely(!skb || !(skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS))) |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 355 | return; |
| 356 | |
| 357 | if (priv->adv_ts) |
| 358 | desc = (priv->dma_etx + entry); |
| 359 | else |
| 360 | desc = (priv->dma_tx + entry); |
| 361 | |
| 362 | /* check tx tstamp status */ |
| 363 | if (!priv->hw->desc->get_tx_timestamp_status((struct dma_desc *)desc)) |
| 364 | return; |
| 365 | |
| 366 | /* get the valid tstamp */ |
| 367 | ns = priv->hw->desc->get_timestamp(desc, priv->adv_ts); |
| 368 | |
| 369 | memset(&shhwtstamp, 0, sizeof(struct skb_shared_hwtstamps)); |
| 370 | shhwtstamp.hwtstamp = ns_to_ktime(ns); |
| 371 | /* pass tstamp to stack */ |
| 372 | skb_tstamp_tx(skb, &shhwtstamp); |
| 373 | |
| 374 | return; |
| 375 | } |
| 376 | |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 377 | /* stmmac_get_rx_hwtstamp - get HW RX timestamps |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 378 | * @priv: driver private structure |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 379 | * @entry : descriptor index to be used. |
| 380 | * @skb : the socket buffer |
| 381 | * Description : |
| 382 | * This function will read received packet's timestamp from the descriptor |
| 383 | * and pass it to stack. It also perform some sanity checks. |
| 384 | */ |
| 385 | static void stmmac_get_rx_hwtstamp(struct stmmac_priv *priv, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 386 | unsigned int entry, struct sk_buff *skb) |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 387 | { |
| 388 | struct skb_shared_hwtstamps *shhwtstamp = NULL; |
| 389 | u64 ns; |
| 390 | void *desc = NULL; |
| 391 | |
| 392 | if (!priv->hwts_rx_en) |
| 393 | return; |
| 394 | |
| 395 | if (priv->adv_ts) |
| 396 | desc = (priv->dma_erx + entry); |
| 397 | else |
| 398 | desc = (priv->dma_rx + entry); |
| 399 | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 400 | /* exit if rx tstamp is not valid */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 401 | if (!priv->hw->desc->get_rx_timestamp_status(desc, priv->adv_ts)) |
| 402 | return; |
| 403 | |
| 404 | /* get valid tstamp */ |
| 405 | ns = priv->hw->desc->get_timestamp(desc, priv->adv_ts); |
| 406 | shhwtstamp = skb_hwtstamps(skb); |
| 407 | memset(shhwtstamp, 0, sizeof(struct skb_shared_hwtstamps)); |
| 408 | shhwtstamp->hwtstamp = ns_to_ktime(ns); |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * stmmac_hwtstamp_ioctl - control hardware timestamping. |
| 413 | * @dev: device pointer. |
| 414 | * @ifr: An IOCTL specefic structure, that can contain a pointer to |
| 415 | * a proprietary structure used to pass information to the driver. |
| 416 | * Description: |
| 417 | * This function configures the MAC to enable/disable both outgoing(TX) |
| 418 | * and incoming(RX) packets time stamping based on user input. |
| 419 | * Return Value: |
| 420 | * 0 on success and an appropriate -ve integer on failure. |
| 421 | */ |
| 422 | static int stmmac_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr) |
| 423 | { |
| 424 | struct stmmac_priv *priv = netdev_priv(dev); |
| 425 | struct hwtstamp_config config; |
| 426 | struct timespec now; |
| 427 | u64 temp = 0; |
| 428 | u32 ptp_v2 = 0; |
| 429 | u32 tstamp_all = 0; |
| 430 | u32 ptp_over_ipv4_udp = 0; |
| 431 | u32 ptp_over_ipv6_udp = 0; |
| 432 | u32 ptp_over_ethernet = 0; |
| 433 | u32 snap_type_sel = 0; |
| 434 | u32 ts_master_en = 0; |
| 435 | u32 ts_event_en = 0; |
| 436 | u32 value = 0; |
| 437 | |
| 438 | if (!(priv->dma_cap.time_stamp || priv->adv_ts)) { |
| 439 | netdev_alert(priv->dev, "No support for HW time stamping\n"); |
| 440 | priv->hwts_tx_en = 0; |
| 441 | priv->hwts_rx_en = 0; |
| 442 | |
| 443 | return -EOPNOTSUPP; |
| 444 | } |
| 445 | |
| 446 | if (copy_from_user(&config, ifr->ifr_data, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 447 | sizeof(struct hwtstamp_config))) |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 448 | return -EFAULT; |
| 449 | |
| 450 | pr_debug("%s config flags:0x%x, tx_type:0x%x, rx_filter:0x%x\n", |
| 451 | __func__, config.flags, config.tx_type, config.rx_filter); |
| 452 | |
| 453 | /* reserved for future extensions */ |
| 454 | if (config.flags) |
| 455 | return -EINVAL; |
| 456 | |
Ben Hutchings | 5f3da32 | 2013-11-14 00:43:41 +0000 | [diff] [blame] | 457 | if (config.tx_type != HWTSTAMP_TX_OFF && |
| 458 | config.tx_type != HWTSTAMP_TX_ON) |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 459 | return -ERANGE; |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 460 | |
| 461 | if (priv->adv_ts) { |
| 462 | switch (config.rx_filter) { |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 463 | case HWTSTAMP_FILTER_NONE: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 464 | /* time stamp no incoming packet at all */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 465 | config.rx_filter = HWTSTAMP_FILTER_NONE; |
| 466 | break; |
| 467 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 468 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 469 | /* PTP v1, UDP, any kind of event packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 470 | config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; |
| 471 | /* take time stamp for all event messages */ |
| 472 | snap_type_sel = PTP_TCR_SNAPTYPSEL_1; |
| 473 | |
| 474 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 475 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 476 | break; |
| 477 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 478 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 479 | /* PTP v1, UDP, Sync packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 480 | config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_SYNC; |
| 481 | /* take time stamp for SYNC messages only */ |
| 482 | ts_event_en = PTP_TCR_TSEVNTENA; |
| 483 | |
| 484 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 485 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 486 | break; |
| 487 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 488 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 489 | /* PTP v1, UDP, Delay_req packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 490 | config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ; |
| 491 | /* take time stamp for Delay_Req messages only */ |
| 492 | ts_master_en = PTP_TCR_TSMSTRENA; |
| 493 | ts_event_en = PTP_TCR_TSEVNTENA; |
| 494 | |
| 495 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 496 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 497 | break; |
| 498 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 499 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 500 | /* PTP v2, UDP, any kind of event packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 501 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_EVENT; |
| 502 | ptp_v2 = PTP_TCR_TSVER2ENA; |
| 503 | /* take time stamp for all event messages */ |
| 504 | snap_type_sel = PTP_TCR_SNAPTYPSEL_1; |
| 505 | |
| 506 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 507 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 508 | break; |
| 509 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 510 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 511 | /* PTP v2, UDP, Sync packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 512 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_SYNC; |
| 513 | ptp_v2 = PTP_TCR_TSVER2ENA; |
| 514 | /* take time stamp for SYNC messages only */ |
| 515 | ts_event_en = PTP_TCR_TSEVNTENA; |
| 516 | |
| 517 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 518 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 519 | break; |
| 520 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 521 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 522 | /* PTP v2, UDP, Delay_req packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 523 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ; |
| 524 | ptp_v2 = PTP_TCR_TSVER2ENA; |
| 525 | /* take time stamp for Delay_Req messages only */ |
| 526 | ts_master_en = PTP_TCR_TSMSTRENA; |
| 527 | ts_event_en = PTP_TCR_TSEVNTENA; |
| 528 | |
| 529 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 530 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 531 | break; |
| 532 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 533 | case HWTSTAMP_FILTER_PTP_V2_EVENT: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 534 | /* PTP v2/802.AS1 any layer, any kind of event packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 535 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; |
| 536 | ptp_v2 = PTP_TCR_TSVER2ENA; |
| 537 | /* take time stamp for all event messages */ |
| 538 | snap_type_sel = PTP_TCR_SNAPTYPSEL_1; |
| 539 | |
| 540 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 541 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 542 | ptp_over_ethernet = PTP_TCR_TSIPENA; |
| 543 | break; |
| 544 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 545 | case HWTSTAMP_FILTER_PTP_V2_SYNC: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 546 | /* PTP v2/802.AS1, any layer, Sync packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 547 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_SYNC; |
| 548 | ptp_v2 = PTP_TCR_TSVER2ENA; |
| 549 | /* take time stamp for SYNC messages only */ |
| 550 | ts_event_en = PTP_TCR_TSEVNTENA; |
| 551 | |
| 552 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 553 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 554 | ptp_over_ethernet = PTP_TCR_TSIPENA; |
| 555 | break; |
| 556 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 557 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 558 | /* PTP v2/802.AS1, any layer, Delay_req packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 559 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_DELAY_REQ; |
| 560 | ptp_v2 = PTP_TCR_TSVER2ENA; |
| 561 | /* take time stamp for Delay_Req messages only */ |
| 562 | ts_master_en = PTP_TCR_TSMSTRENA; |
| 563 | ts_event_en = PTP_TCR_TSEVNTENA; |
| 564 | |
| 565 | ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA; |
| 566 | ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA; |
| 567 | ptp_over_ethernet = PTP_TCR_TSIPENA; |
| 568 | break; |
| 569 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 570 | case HWTSTAMP_FILTER_ALL: |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 571 | /* time stamp any incoming packet */ |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 572 | config.rx_filter = HWTSTAMP_FILTER_ALL; |
| 573 | tstamp_all = PTP_TCR_TSENALL; |
| 574 | break; |
| 575 | |
| 576 | default: |
| 577 | return -ERANGE; |
| 578 | } |
| 579 | } else { |
| 580 | switch (config.rx_filter) { |
| 581 | case HWTSTAMP_FILTER_NONE: |
| 582 | config.rx_filter = HWTSTAMP_FILTER_NONE; |
| 583 | break; |
| 584 | default: |
| 585 | /* PTP v1, UDP, any kind of event packet */ |
| 586 | config.rx_filter = HWTSTAMP_FILTER_PTP_V1_L4_EVENT; |
| 587 | break; |
| 588 | } |
| 589 | } |
| 590 | priv->hwts_rx_en = ((config.rx_filter == HWTSTAMP_FILTER_NONE) ? 0 : 1); |
Ben Hutchings | 5f3da32 | 2013-11-14 00:43:41 +0000 | [diff] [blame] | 591 | priv->hwts_tx_en = config.tx_type == HWTSTAMP_TX_ON; |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 592 | |
| 593 | if (!priv->hwts_tx_en && !priv->hwts_rx_en) |
| 594 | priv->hw->ptp->config_hw_tstamping(priv->ioaddr, 0); |
| 595 | else { |
| 596 | value = (PTP_TCR_TSENA | PTP_TCR_TSCFUPDT | PTP_TCR_TSCTRLSSR | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 597 | tstamp_all | ptp_v2 | ptp_over_ethernet | |
| 598 | ptp_over_ipv6_udp | ptp_over_ipv4_udp | ts_event_en | |
| 599 | ts_master_en | snap_type_sel); |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 600 | |
| 601 | priv->hw->ptp->config_hw_tstamping(priv->ioaddr, value); |
| 602 | |
| 603 | /* program Sub Second Increment reg */ |
| 604 | priv->hw->ptp->config_sub_second_increment(priv->ioaddr); |
| 605 | |
| 606 | /* calculate default added value: |
| 607 | * formula is : |
| 608 | * addend = (2^32)/freq_div_ratio; |
Giuseppe CAVALLARO | 5566401 | 2014-08-27 10:37:49 +0200 | [diff] [blame] | 609 | * where, freq_div_ratio = clk_ptp_ref_i/50MHz |
| 610 | * hence, addend = ((2^32) * 50MHz)/clk_ptp_ref_i; |
| 611 | * NOTE: clk_ptp_ref_i should be >= 50MHz to |
Joe Perches | dbedd44 | 2015-03-06 20:49:12 -0800 | [diff] [blame] | 612 | * achieve 20ns accuracy. |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 613 | * |
| 614 | * 2^x * y == (y << x), hence |
| 615 | * 2^32 * 50000000 ==> (50000000 << 32) |
| 616 | */ |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 617 | temp = (u64) (50000000ULL << 32); |
Giuseppe CAVALLARO | 5566401 | 2014-08-27 10:37:49 +0200 | [diff] [blame] | 618 | priv->default_addend = div_u64(temp, priv->clk_ptp_rate); |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 619 | priv->hw->ptp->config_addend(priv->ioaddr, |
| 620 | priv->default_addend); |
| 621 | |
| 622 | /* initialize system time */ |
| 623 | getnstimeofday(&now); |
| 624 | priv->hw->ptp->init_systime(priv->ioaddr, now.tv_sec, |
| 625 | now.tv_nsec); |
| 626 | } |
| 627 | |
| 628 | return copy_to_user(ifr->ifr_data, &config, |
| 629 | sizeof(struct hwtstamp_config)) ? -EFAULT : 0; |
| 630 | } |
| 631 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 632 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 633 | * stmmac_init_ptp - init PTP |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 634 | * @priv: driver private structure |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 635 | * Description: this is to verify if the HW supports the PTPv1 or PTPv2. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 636 | * This is done by looking at the HW cap. register. |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 637 | * This function also registers the ptp driver. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 638 | */ |
Rayagond Kokatanur | 92ba688 | 2013-03-26 04:43:11 +0000 | [diff] [blame] | 639 | static int stmmac_init_ptp(struct stmmac_priv *priv) |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 640 | { |
Rayagond Kokatanur | 92ba688 | 2013-03-26 04:43:11 +0000 | [diff] [blame] | 641 | if (!(priv->dma_cap.time_stamp || priv->dma_cap.atime_stamp)) |
| 642 | return -EOPNOTSUPP; |
| 643 | |
Giuseppe CAVALLARO | 5566401 | 2014-08-27 10:37:49 +0200 | [diff] [blame] | 644 | /* Fall-back to main clock in case of no PTP ref is passed */ |
| 645 | priv->clk_ptp_ref = devm_clk_get(priv->device, "clk_ptp_ref"); |
| 646 | if (IS_ERR(priv->clk_ptp_ref)) { |
| 647 | priv->clk_ptp_rate = clk_get_rate(priv->stmmac_clk); |
| 648 | priv->clk_ptp_ref = NULL; |
| 649 | } else { |
| 650 | clk_prepare_enable(priv->clk_ptp_ref); |
| 651 | priv->clk_ptp_rate = clk_get_rate(priv->clk_ptp_ref); |
| 652 | } |
| 653 | |
Vince Bridgers | 7cd0139 | 2013-12-20 11:19:34 -0600 | [diff] [blame] | 654 | priv->adv_ts = 0; |
| 655 | if (priv->dma_cap.atime_stamp && priv->extend_desc) |
| 656 | priv->adv_ts = 1; |
| 657 | |
| 658 | if (netif_msg_hw(priv) && priv->dma_cap.time_stamp) |
| 659 | pr_debug("IEEE 1588-2002 Time Stamp supported\n"); |
| 660 | |
| 661 | if (netif_msg_hw(priv) && priv->adv_ts) |
| 662 | pr_debug("IEEE 1588-2008 Advanced Time Stamp supported\n"); |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 663 | |
| 664 | priv->hw->ptp = &stmmac_ptp; |
| 665 | priv->hwts_tx_en = 0; |
| 666 | priv->hwts_rx_en = 0; |
Rayagond Kokatanur | 92ba688 | 2013-03-26 04:43:11 +0000 | [diff] [blame] | 667 | |
| 668 | return stmmac_ptp_register(priv); |
| 669 | } |
| 670 | |
| 671 | static void stmmac_release_ptp(struct stmmac_priv *priv) |
| 672 | { |
Giuseppe CAVALLARO | 5566401 | 2014-08-27 10:37:49 +0200 | [diff] [blame] | 673 | if (priv->clk_ptp_ref) |
| 674 | clk_disable_unprepare(priv->clk_ptp_ref); |
Rayagond Kokatanur | 92ba688 | 2013-03-26 04:43:11 +0000 | [diff] [blame] | 675 | stmmac_ptp_unregister(priv); |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 676 | } |
| 677 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 678 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 679 | * stmmac_adjust_link - adjusts the link parameters |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 680 | * @dev: net device structure |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 681 | * Description: this is the helper called by the physical abstraction layer |
| 682 | * drivers to communicate the phy link status. According the speed and duplex |
| 683 | * this driver can invoke registered glue-logic as well. |
| 684 | * It also invoke the eee initialization because it could happen when switch |
| 685 | * on different networks (that are eee capable). |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 686 | */ |
| 687 | static void stmmac_adjust_link(struct net_device *dev) |
| 688 | { |
| 689 | struct stmmac_priv *priv = netdev_priv(dev); |
| 690 | struct phy_device *phydev = priv->phydev; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 691 | unsigned long flags; |
| 692 | int new_state = 0; |
| 693 | unsigned int fc = priv->flow_ctrl, pause_time = priv->pause; |
| 694 | |
| 695 | if (phydev == NULL) |
| 696 | return; |
| 697 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 698 | spin_lock_irqsave(&priv->lock, flags); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 699 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 700 | if (phydev->link) { |
Giuseppe CAVALLARO | ad01b7d | 2010-08-23 20:40:42 +0000 | [diff] [blame] | 701 | u32 ctrl = readl(priv->ioaddr + MAC_CTRL_REG); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 702 | |
| 703 | /* Now we make sure that we can be in full duplex mode. |
| 704 | * If not, we operate in half-duplex mode. */ |
| 705 | if (phydev->duplex != priv->oldduplex) { |
| 706 | new_state = 1; |
| 707 | if (!(phydev->duplex)) |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 708 | ctrl &= ~priv->hw->link.duplex; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 709 | else |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 710 | ctrl |= priv->hw->link.duplex; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 711 | priv->oldduplex = phydev->duplex; |
| 712 | } |
| 713 | /* Flow Control operation */ |
| 714 | if (phydev->pause) |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 715 | priv->hw->mac->flow_ctrl(priv->hw, phydev->duplex, |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 716 | fc, pause_time); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 717 | |
| 718 | if (phydev->speed != priv->speed) { |
| 719 | new_state = 1; |
| 720 | switch (phydev->speed) { |
| 721 | case 1000: |
Giuseppe CAVALLARO | 9dfeb4d | 2010-11-24 02:37:58 +0000 | [diff] [blame] | 722 | if (likely(priv->plat->has_gmac)) |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 723 | ctrl &= ~priv->hw->link.port; |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 724 | stmmac_hw_fix_mac_speed(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 725 | break; |
| 726 | case 100: |
| 727 | case 10: |
Giuseppe CAVALLARO | 9dfeb4d | 2010-11-24 02:37:58 +0000 | [diff] [blame] | 728 | if (priv->plat->has_gmac) { |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 729 | ctrl |= priv->hw->link.port; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 730 | if (phydev->speed == SPEED_100) { |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 731 | ctrl |= priv->hw->link.speed; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 732 | } else { |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 733 | ctrl &= ~(priv->hw->link.speed); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 734 | } |
| 735 | } else { |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 736 | ctrl &= ~priv->hw->link.port; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 737 | } |
Giuseppe CAVALLARO | 9dfeb4d | 2010-11-24 02:37:58 +0000 | [diff] [blame] | 738 | stmmac_hw_fix_mac_speed(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 739 | break; |
| 740 | default: |
| 741 | if (netif_msg_link(priv)) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 742 | pr_warn("%s: Speed (%d) not 10/100\n", |
| 743 | dev->name, phydev->speed); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 744 | break; |
| 745 | } |
| 746 | |
| 747 | priv->speed = phydev->speed; |
| 748 | } |
| 749 | |
Giuseppe CAVALLARO | ad01b7d | 2010-08-23 20:40:42 +0000 | [diff] [blame] | 750 | writel(ctrl, priv->ioaddr + MAC_CTRL_REG); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 751 | |
| 752 | if (!priv->oldlink) { |
| 753 | new_state = 1; |
| 754 | priv->oldlink = 1; |
| 755 | } |
| 756 | } else if (priv->oldlink) { |
| 757 | new_state = 1; |
| 758 | priv->oldlink = 0; |
| 759 | priv->speed = 0; |
| 760 | priv->oldduplex = -1; |
| 761 | } |
| 762 | |
| 763 | if (new_state && netif_msg_link(priv)) |
| 764 | phy_print_status(phydev); |
| 765 | |
Giuseppe CAVALLARO | 4741cf9 | 2014-11-04 17:08:08 +0100 | [diff] [blame] | 766 | spin_unlock_irqrestore(&priv->lock, flags); |
| 767 | |
Giuseppe CAVALLARO | f5351ef | 2013-06-18 07:03:23 +0200 | [diff] [blame] | 768 | /* At this stage, it could be needed to setup the EEE or adjust some |
| 769 | * MAC related HW registers. |
| 770 | */ |
| 771 | priv->eee_enabled = stmmac_eee_init(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 772 | } |
| 773 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 774 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 775 | * stmmac_check_pcs_mode - verify if RGMII/SGMII is supported |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 776 | * @priv: driver private structure |
| 777 | * Description: this is to verify if the HW supports the PCS. |
| 778 | * Physical Coding Sublayer (PCS) interface that can be used when the MAC is |
| 779 | * configured for the TBI, RTBI, or SGMII PHY interface. |
| 780 | */ |
Giuseppe CAVALLARO | e58bb43 | 2013-03-26 04:43:08 +0000 | [diff] [blame] | 781 | static void stmmac_check_pcs_mode(struct stmmac_priv *priv) |
| 782 | { |
| 783 | int interface = priv->plat->interface; |
| 784 | |
| 785 | if (priv->dma_cap.pcs) { |
Byungho An | 0d909dc | 2013-06-28 16:35:31 +0900 | [diff] [blame] | 786 | if ((interface == PHY_INTERFACE_MODE_RGMII) || |
| 787 | (interface == PHY_INTERFACE_MODE_RGMII_ID) || |
| 788 | (interface == PHY_INTERFACE_MODE_RGMII_RXID) || |
| 789 | (interface == PHY_INTERFACE_MODE_RGMII_TXID)) { |
Giuseppe CAVALLARO | e58bb43 | 2013-03-26 04:43:08 +0000 | [diff] [blame] | 790 | pr_debug("STMMAC: PCS RGMII support enable\n"); |
| 791 | priv->pcs = STMMAC_PCS_RGMII; |
Byungho An | 0d909dc | 2013-06-28 16:35:31 +0900 | [diff] [blame] | 792 | } else if (interface == PHY_INTERFACE_MODE_SGMII) { |
Giuseppe CAVALLARO | e58bb43 | 2013-03-26 04:43:08 +0000 | [diff] [blame] | 793 | pr_debug("STMMAC: PCS SGMII support enable\n"); |
| 794 | priv->pcs = STMMAC_PCS_SGMII; |
| 795 | } |
| 796 | } |
| 797 | } |
| 798 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 799 | /** |
| 800 | * stmmac_init_phy - PHY initialization |
| 801 | * @dev: net device structure |
| 802 | * Description: it initializes the driver's PHY state, and attaches the PHY |
| 803 | * to the mac driver. |
| 804 | * Return value: |
| 805 | * 0 on success |
| 806 | */ |
| 807 | static int stmmac_init_phy(struct net_device *dev) |
| 808 | { |
| 809 | struct stmmac_priv *priv = netdev_priv(dev); |
| 810 | struct phy_device *phydev; |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 811 | char phy_id_fmt[MII_BUS_ID_SIZE + 3]; |
Giuseppe CAVALLARO | 109cdd6 | 2010-01-06 23:07:11 +0000 | [diff] [blame] | 812 | char bus_id[MII_BUS_ID_SIZE]; |
Srinivas Kandagatla | 79ee1dc | 2011-10-18 00:01:18 +0000 | [diff] [blame] | 813 | int interface = priv->plat->interface; |
Srinivas Kandagatla | 9cbadf0 | 2014-01-16 10:51:43 +0000 | [diff] [blame] | 814 | int max_speed = priv->plat->max_speed; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 815 | priv->oldlink = 0; |
| 816 | priv->speed = 0; |
| 817 | priv->oldduplex = -1; |
| 818 | |
Srinivas Kandagatla | f142af2 | 2012-04-04 04:33:19 +0000 | [diff] [blame] | 819 | if (priv->plat->phy_bus_name) |
| 820 | snprintf(bus_id, MII_BUS_ID_SIZE, "%s-%x", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 821 | priv->plat->phy_bus_name, priv->plat->bus_id); |
Srinivas Kandagatla | f142af2 | 2012-04-04 04:33:19 +0000 | [diff] [blame] | 822 | else |
| 823 | snprintf(bus_id, MII_BUS_ID_SIZE, "stmmac-%x", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 824 | priv->plat->bus_id); |
Srinivas Kandagatla | f142af2 | 2012-04-04 04:33:19 +0000 | [diff] [blame] | 825 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 826 | snprintf(phy_id_fmt, MII_BUS_ID_SIZE + 3, PHY_ID_FMT, bus_id, |
Giuseppe CAVALLARO | 36bcfe7 | 2011-07-20 00:05:23 +0000 | [diff] [blame] | 827 | priv->plat->phy_addr); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 828 | pr_debug("stmmac_init_phy: trying to attach to %s\n", phy_id_fmt); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 829 | |
Florian Fainelli | f9a8f83 | 2013-01-14 00:52:52 +0000 | [diff] [blame] | 830 | phydev = phy_connect(dev, phy_id_fmt, &stmmac_adjust_link, interface); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 831 | |
| 832 | if (IS_ERR(phydev)) { |
| 833 | pr_err("%s: Could not attach to PHY\n", dev->name); |
| 834 | return PTR_ERR(phydev); |
| 835 | } |
| 836 | |
Srinivas Kandagatla | 79ee1dc | 2011-10-18 00:01:18 +0000 | [diff] [blame] | 837 | /* Stop Advertising 1000BASE Capability if interface is not GMII */ |
Srinivas Kandagatla | c5b9b4e | 2011-11-16 21:57:59 +0000 | [diff] [blame] | 838 | if ((interface == PHY_INTERFACE_MODE_MII) || |
Srinivas Kandagatla | 9cbadf0 | 2014-01-16 10:51:43 +0000 | [diff] [blame] | 839 | (interface == PHY_INTERFACE_MODE_RMII) || |
Pavel Machek | a77e4ac | 2014-08-25 13:31:16 +0200 | [diff] [blame] | 840 | (max_speed < 1000 && max_speed > 0)) |
Srinivas Kandagatla | c5b9b4e | 2011-11-16 21:57:59 +0000 | [diff] [blame] | 841 | phydev->advertising &= ~(SUPPORTED_1000baseT_Half | |
| 842 | SUPPORTED_1000baseT_Full); |
Srinivas Kandagatla | 79ee1dc | 2011-10-18 00:01:18 +0000 | [diff] [blame] | 843 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 844 | /* |
| 845 | * Broken HW is sometimes missing the pull-up resistor on the |
| 846 | * MDIO line, which results in reads to non-existent devices returning |
| 847 | * 0 rather than 0xffff. Catch this here and treat 0 as a non-existent |
| 848 | * device as well. |
| 849 | * Note: phydev->phy_id is the result of reading the UID PHY registers. |
| 850 | */ |
| 851 | if (phydev->phy_id == 0) { |
| 852 | phy_disconnect(phydev); |
| 853 | return -ENODEV; |
| 854 | } |
| 855 | pr_debug("stmmac_init_phy: %s: attached to PHY (UID 0x%x)" |
Giuseppe CAVALLARO | 36bcfe7 | 2011-07-20 00:05:23 +0000 | [diff] [blame] | 856 | " Link = %d\n", dev->name, phydev->phy_id, phydev->link); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 857 | |
| 858 | priv->phydev = phydev; |
| 859 | |
| 860 | return 0; |
| 861 | } |
| 862 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 863 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 864 | * stmmac_display_ring - display ring |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 865 | * @head: pointer to the head of the ring passed. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 866 | * @size: size of the ring. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 867 | * @extend_desc: to verify if extended descriptors are used. |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 868 | * Description: display the control/status and buffer descriptors. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 869 | */ |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 870 | static void stmmac_display_ring(void *head, int size, int extend_desc) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 871 | { |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 872 | int i; |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 873 | struct dma_extended_desc *ep = (struct dma_extended_desc *)head; |
| 874 | struct dma_desc *p = (struct dma_desc *)head; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 875 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 876 | for (i = 0; i < size; i++) { |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 877 | u64 x; |
| 878 | if (extend_desc) { |
| 879 | x = *(u64 *) ep; |
| 880 | pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 881 | i, (unsigned int)virt_to_phys(ep), |
| 882 | (unsigned int)x, (unsigned int)(x >> 32), |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 883 | ep->basic.des2, ep->basic.des3); |
| 884 | ep++; |
| 885 | } else { |
| 886 | x = *(u64 *) p; |
| 887 | pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 888 | i, (unsigned int)virt_to_phys(p), |
| 889 | (unsigned int)x, (unsigned int)(x >> 32), |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 890 | p->des2, p->des3); |
| 891 | p++; |
| 892 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 893 | pr_info("\n"); |
| 894 | } |
| 895 | } |
| 896 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 897 | static void stmmac_display_rings(struct stmmac_priv *priv) |
| 898 | { |
| 899 | unsigned int txsize = priv->dma_tx_size; |
| 900 | unsigned int rxsize = priv->dma_rx_size; |
| 901 | |
| 902 | if (priv->extend_desc) { |
| 903 | pr_info("Extended RX descriptor ring:\n"); |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 904 | stmmac_display_ring((void *)priv->dma_erx, rxsize, 1); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 905 | pr_info("Extended TX descriptor ring:\n"); |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 906 | stmmac_display_ring((void *)priv->dma_etx, txsize, 1); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 907 | } else { |
| 908 | pr_info("RX descriptor ring:\n"); |
| 909 | stmmac_display_ring((void *)priv->dma_rx, rxsize, 0); |
| 910 | pr_info("TX descriptor ring:\n"); |
| 911 | stmmac_display_ring((void *)priv->dma_tx, txsize, 0); |
| 912 | } |
| 913 | } |
| 914 | |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 915 | static int stmmac_set_bfsize(int mtu, int bufsize) |
| 916 | { |
| 917 | int ret = bufsize; |
| 918 | |
| 919 | if (mtu >= BUF_SIZE_4KiB) |
| 920 | ret = BUF_SIZE_8KiB; |
| 921 | else if (mtu >= BUF_SIZE_2KiB) |
| 922 | ret = BUF_SIZE_4KiB; |
Giuseppe CAVALLARO | d916701 | 2014-03-10 13:40:32 +0100 | [diff] [blame] | 923 | else if (mtu > DEFAULT_BUFSIZE) |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 924 | ret = BUF_SIZE_2KiB; |
| 925 | else |
Giuseppe CAVALLARO | d916701 | 2014-03-10 13:40:32 +0100 | [diff] [blame] | 926 | ret = DEFAULT_BUFSIZE; |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 927 | |
| 928 | return ret; |
| 929 | } |
| 930 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 931 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 932 | * stmmac_clear_descriptors - clear descriptors |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 933 | * @priv: driver private structure |
| 934 | * Description: this function is called to clear the tx and rx descriptors |
| 935 | * in case of both basic and extended descriptors are used. |
| 936 | */ |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 937 | static void stmmac_clear_descriptors(struct stmmac_priv *priv) |
| 938 | { |
| 939 | int i; |
| 940 | unsigned int txsize = priv->dma_tx_size; |
| 941 | unsigned int rxsize = priv->dma_rx_size; |
| 942 | |
| 943 | /* Clear the Rx/Tx descriptors */ |
| 944 | for (i = 0; i < rxsize; i++) |
| 945 | if (priv->extend_desc) |
| 946 | priv->hw->desc->init_rx_desc(&priv->dma_erx[i].basic, |
| 947 | priv->use_riwt, priv->mode, |
| 948 | (i == rxsize - 1)); |
| 949 | else |
| 950 | priv->hw->desc->init_rx_desc(&priv->dma_rx[i], |
| 951 | priv->use_riwt, priv->mode, |
| 952 | (i == rxsize - 1)); |
| 953 | for (i = 0; i < txsize; i++) |
| 954 | if (priv->extend_desc) |
| 955 | priv->hw->desc->init_tx_desc(&priv->dma_etx[i].basic, |
| 956 | priv->mode, |
| 957 | (i == txsize - 1)); |
| 958 | else |
| 959 | priv->hw->desc->init_tx_desc(&priv->dma_tx[i], |
| 960 | priv->mode, |
| 961 | (i == txsize - 1)); |
| 962 | } |
| 963 | |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 964 | /** |
| 965 | * stmmac_init_rx_buffers - init the RX descriptor buffer. |
| 966 | * @priv: driver private structure |
| 967 | * @p: descriptor pointer |
| 968 | * @i: descriptor index |
| 969 | * @flags: gfp flag. |
| 970 | * Description: this function is called to allocate a receive buffer, perform |
| 971 | * the DMA mapping and init the descriptor. |
| 972 | */ |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 973 | static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p, |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 974 | int i, gfp_t flags) |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 975 | { |
| 976 | struct sk_buff *skb; |
| 977 | |
| 978 | skb = __netdev_alloc_skb(priv->dev, priv->dma_buf_sz + NET_IP_ALIGN, |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 979 | flags); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 980 | if (!skb) { |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 981 | pr_err("%s: Rx init fails; skb is NULL\n", __func__); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 982 | return -ENOMEM; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 983 | } |
| 984 | skb_reserve(skb, NET_IP_ALIGN); |
| 985 | priv->rx_skbuff[i] = skb; |
| 986 | priv->rx_skbuff_dma[i] = dma_map_single(priv->device, skb->data, |
| 987 | priv->dma_buf_sz, |
| 988 | DMA_FROM_DEVICE); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 989 | if (dma_mapping_error(priv->device, priv->rx_skbuff_dma[i])) { |
| 990 | pr_err("%s: DMA mapping error\n", __func__); |
| 991 | dev_kfree_skb_any(skb); |
| 992 | return -EINVAL; |
| 993 | } |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 994 | |
| 995 | p->des2 = priv->rx_skbuff_dma[i]; |
| 996 | |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 997 | if ((priv->hw->mode->init_desc3) && |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 998 | (priv->dma_buf_sz == BUF_SIZE_16KiB)) |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 999 | priv->hw->mode->init_desc3(p); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1000 | |
| 1001 | return 0; |
| 1002 | } |
| 1003 | |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1004 | static void stmmac_free_rx_buffers(struct stmmac_priv *priv, int i) |
| 1005 | { |
| 1006 | if (priv->rx_skbuff[i]) { |
| 1007 | dma_unmap_single(priv->device, priv->rx_skbuff_dma[i], |
| 1008 | priv->dma_buf_sz, DMA_FROM_DEVICE); |
| 1009 | dev_kfree_skb_any(priv->rx_skbuff[i]); |
| 1010 | } |
| 1011 | priv->rx_skbuff[i] = NULL; |
| 1012 | } |
| 1013 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1014 | /** |
| 1015 | * init_dma_desc_rings - init the RX/TX descriptor rings |
| 1016 | * @dev: net device structure |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1017 | * @flags: gfp flag. |
| 1018 | * Description: this function initializes the DMA RX/TX descriptors |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 1019 | * and allocates the socket buffers. It suppors the chained and ring |
| 1020 | * modes. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1021 | */ |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 1022 | static int init_dma_desc_rings(struct net_device *dev, gfp_t flags) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1023 | { |
| 1024 | int i; |
| 1025 | struct stmmac_priv *priv = netdev_priv(dev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1026 | unsigned int txsize = priv->dma_tx_size; |
| 1027 | unsigned int rxsize = priv->dma_rx_size; |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1028 | unsigned int bfsize = 0; |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1029 | int ret = -ENOMEM; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1030 | |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1031 | if (priv->hw->mode->set_16kib_bfsize) |
| 1032 | bfsize = priv->hw->mode->set_16kib_bfsize(dev->mtu); |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 1033 | |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1034 | if (bfsize < BUF_SIZE_16KiB) |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 1035 | bfsize = stmmac_set_bfsize(dev->mtu, priv->dma_buf_sz); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1036 | |
Vince Bridgers | 2618abb | 2014-01-20 05:39:01 -0600 | [diff] [blame] | 1037 | priv->dma_buf_sz = bfsize; |
| 1038 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 1039 | if (netif_msg_probe(priv)) |
| 1040 | pr_debug("%s: txsize %d, rxsize %d, bfsize %d\n", __func__, |
| 1041 | txsize, rxsize, bfsize); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1042 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 1043 | if (netif_msg_probe(priv)) { |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1044 | pr_debug("(%s) dma_rx_phy=0x%08x dma_tx_phy=0x%08x\n", __func__, |
| 1045 | (u32) priv->dma_rx_phy, (u32) priv->dma_tx_phy); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1046 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 1047 | /* RX INITIALIZATION */ |
| 1048 | pr_debug("\tSKB addresses:\nskb\t\tskb data\tdma data\n"); |
| 1049 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1050 | for (i = 0; i < rxsize; i++) { |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1051 | struct dma_desc *p; |
| 1052 | if (priv->extend_desc) |
| 1053 | p = &((priv->dma_erx + i)->basic); |
| 1054 | else |
| 1055 | p = priv->dma_rx + i; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1056 | |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 1057 | ret = stmmac_init_rx_buffers(priv, p, i, flags); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1058 | if (ret) |
| 1059 | goto err_init_rx_buffers; |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 1060 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 1061 | if (netif_msg_probe(priv)) |
| 1062 | pr_debug("[%p]\t[%p]\t[%x]\n", priv->rx_skbuff[i], |
| 1063 | priv->rx_skbuff[i]->data, |
| 1064 | (unsigned int)priv->rx_skbuff_dma[i]); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1065 | } |
| 1066 | priv->cur_rx = 0; |
| 1067 | priv->dirty_rx = (unsigned int)(i - rxsize); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1068 | buf_sz = bfsize; |
| 1069 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1070 | /* Setup the chained descriptor addresses */ |
| 1071 | if (priv->mode == STMMAC_CHAIN_MODE) { |
| 1072 | if (priv->extend_desc) { |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1073 | priv->hw->mode->init(priv->dma_erx, priv->dma_rx_phy, |
| 1074 | rxsize, 1); |
| 1075 | priv->hw->mode->init(priv->dma_etx, priv->dma_tx_phy, |
| 1076 | txsize, 1); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1077 | } else { |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1078 | priv->hw->mode->init(priv->dma_rx, priv->dma_rx_phy, |
| 1079 | rxsize, 0); |
| 1080 | priv->hw->mode->init(priv->dma_tx, priv->dma_tx_phy, |
| 1081 | txsize, 0); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1082 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1083 | } |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 1084 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1085 | /* TX INITIALIZATION */ |
| 1086 | for (i = 0; i < txsize; i++) { |
| 1087 | struct dma_desc *p; |
| 1088 | if (priv->extend_desc) |
| 1089 | p = &((priv->dma_etx + i)->basic); |
| 1090 | else |
| 1091 | p = priv->dma_tx + i; |
| 1092 | p->des2 = 0; |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 1093 | priv->tx_skbuff_dma[i].buf = 0; |
| 1094 | priv->tx_skbuff_dma[i].map_as_page = false; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1095 | priv->tx_skbuff[i] = NULL; |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1096 | } |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1097 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1098 | priv->dirty_tx = 0; |
| 1099 | priv->cur_tx = 0; |
Beniamino Galvani | 3897957 | 2015-01-21 19:07:27 +0100 | [diff] [blame] | 1100 | netdev_reset_queue(priv->dev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1101 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1102 | stmmac_clear_descriptors(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1103 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1104 | if (netif_msg_hw(priv)) |
| 1105 | stmmac_display_rings(priv); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1106 | |
| 1107 | return 0; |
| 1108 | err_init_rx_buffers: |
| 1109 | while (--i >= 0) |
| 1110 | stmmac_free_rx_buffers(priv, i); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1111 | return ret; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1112 | } |
| 1113 | |
| 1114 | static void dma_free_rx_skbufs(struct stmmac_priv *priv) |
| 1115 | { |
| 1116 | int i; |
| 1117 | |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1118 | for (i = 0; i < priv->dma_rx_size; i++) |
| 1119 | stmmac_free_rx_buffers(priv, i); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1120 | } |
| 1121 | |
| 1122 | static void dma_free_tx_skbufs(struct stmmac_priv *priv) |
| 1123 | { |
| 1124 | int i; |
| 1125 | |
| 1126 | for (i = 0; i < priv->dma_tx_size; i++) { |
damuzi000 | 75e4364 | 2014-01-17 23:47:59 +0800 | [diff] [blame] | 1127 | struct dma_desc *p; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1128 | |
damuzi000 | 75e4364 | 2014-01-17 23:47:59 +0800 | [diff] [blame] | 1129 | if (priv->extend_desc) |
| 1130 | p = &((priv->dma_etx + i)->basic); |
| 1131 | else |
| 1132 | p = priv->dma_tx + i; |
| 1133 | |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 1134 | if (priv->tx_skbuff_dma[i].buf) { |
| 1135 | if (priv->tx_skbuff_dma[i].map_as_page) |
| 1136 | dma_unmap_page(priv->device, |
| 1137 | priv->tx_skbuff_dma[i].buf, |
| 1138 | priv->hw->desc->get_tx_len(p), |
| 1139 | DMA_TO_DEVICE); |
| 1140 | else |
| 1141 | dma_unmap_single(priv->device, |
| 1142 | priv->tx_skbuff_dma[i].buf, |
| 1143 | priv->hw->desc->get_tx_len(p), |
| 1144 | DMA_TO_DEVICE); |
damuzi000 | 75e4364 | 2014-01-17 23:47:59 +0800 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | if (priv->tx_skbuff[i] != NULL) { |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1148 | dev_kfree_skb_any(priv->tx_skbuff[i]); |
| 1149 | priv->tx_skbuff[i] = NULL; |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 1150 | priv->tx_skbuff_dma[i].buf = 0; |
| 1151 | priv->tx_skbuff_dma[i].map_as_page = false; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1152 | } |
| 1153 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1154 | } |
| 1155 | |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1156 | /** |
| 1157 | * alloc_dma_desc_resources - alloc TX/RX resources. |
| 1158 | * @priv: private structure |
| 1159 | * Description: according to which descriptor can be used (extend or basic) |
| 1160 | * this function allocates the resources for TX and RX paths. In case of |
| 1161 | * reception, for example, it pre-allocated the RX socket buffer in order to |
| 1162 | * allow zero-copy mechanism. |
| 1163 | */ |
Srinivas Kandagatla | 09f8d69 | 2014-01-16 10:52:06 +0000 | [diff] [blame] | 1164 | static int alloc_dma_desc_resources(struct stmmac_priv *priv) |
| 1165 | { |
| 1166 | unsigned int txsize = priv->dma_tx_size; |
| 1167 | unsigned int rxsize = priv->dma_rx_size; |
| 1168 | int ret = -ENOMEM; |
| 1169 | |
| 1170 | priv->rx_skbuff_dma = kmalloc_array(rxsize, sizeof(dma_addr_t), |
| 1171 | GFP_KERNEL); |
| 1172 | if (!priv->rx_skbuff_dma) |
| 1173 | return -ENOMEM; |
| 1174 | |
| 1175 | priv->rx_skbuff = kmalloc_array(rxsize, sizeof(struct sk_buff *), |
| 1176 | GFP_KERNEL); |
| 1177 | if (!priv->rx_skbuff) |
| 1178 | goto err_rx_skbuff; |
| 1179 | |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 1180 | priv->tx_skbuff_dma = kmalloc_array(txsize, |
| 1181 | sizeof(*priv->tx_skbuff_dma), |
Srinivas Kandagatla | 09f8d69 | 2014-01-16 10:52:06 +0000 | [diff] [blame] | 1182 | GFP_KERNEL); |
| 1183 | if (!priv->tx_skbuff_dma) |
| 1184 | goto err_tx_skbuff_dma; |
| 1185 | |
| 1186 | priv->tx_skbuff = kmalloc_array(txsize, sizeof(struct sk_buff *), |
| 1187 | GFP_KERNEL); |
| 1188 | if (!priv->tx_skbuff) |
| 1189 | goto err_tx_skbuff; |
| 1190 | |
| 1191 | if (priv->extend_desc) { |
| 1192 | priv->dma_erx = dma_alloc_coherent(priv->device, rxsize * |
| 1193 | sizeof(struct |
| 1194 | dma_extended_desc), |
| 1195 | &priv->dma_rx_phy, |
| 1196 | GFP_KERNEL); |
| 1197 | if (!priv->dma_erx) |
| 1198 | goto err_dma; |
| 1199 | |
| 1200 | priv->dma_etx = dma_alloc_coherent(priv->device, txsize * |
| 1201 | sizeof(struct |
| 1202 | dma_extended_desc), |
| 1203 | &priv->dma_tx_phy, |
| 1204 | GFP_KERNEL); |
| 1205 | if (!priv->dma_etx) { |
| 1206 | dma_free_coherent(priv->device, priv->dma_rx_size * |
| 1207 | sizeof(struct dma_extended_desc), |
| 1208 | priv->dma_erx, priv->dma_rx_phy); |
| 1209 | goto err_dma; |
| 1210 | } |
| 1211 | } else { |
| 1212 | priv->dma_rx = dma_alloc_coherent(priv->device, rxsize * |
| 1213 | sizeof(struct dma_desc), |
| 1214 | &priv->dma_rx_phy, |
| 1215 | GFP_KERNEL); |
| 1216 | if (!priv->dma_rx) |
| 1217 | goto err_dma; |
| 1218 | |
| 1219 | priv->dma_tx = dma_alloc_coherent(priv->device, txsize * |
| 1220 | sizeof(struct dma_desc), |
| 1221 | &priv->dma_tx_phy, |
| 1222 | GFP_KERNEL); |
| 1223 | if (!priv->dma_tx) { |
| 1224 | dma_free_coherent(priv->device, priv->dma_rx_size * |
| 1225 | sizeof(struct dma_desc), |
| 1226 | priv->dma_rx, priv->dma_rx_phy); |
| 1227 | goto err_dma; |
| 1228 | } |
| 1229 | } |
| 1230 | |
| 1231 | return 0; |
| 1232 | |
| 1233 | err_dma: |
| 1234 | kfree(priv->tx_skbuff); |
| 1235 | err_tx_skbuff: |
| 1236 | kfree(priv->tx_skbuff_dma); |
| 1237 | err_tx_skbuff_dma: |
| 1238 | kfree(priv->rx_skbuff); |
| 1239 | err_rx_skbuff: |
| 1240 | kfree(priv->rx_skbuff_dma); |
| 1241 | return ret; |
| 1242 | } |
| 1243 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1244 | static void free_dma_desc_resources(struct stmmac_priv *priv) |
| 1245 | { |
| 1246 | /* Release the DMA TX/RX socket buffers */ |
| 1247 | dma_free_rx_skbufs(priv); |
| 1248 | dma_free_tx_skbufs(priv); |
| 1249 | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1250 | /* Free DMA regions of consistent memory previously allocated */ |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1251 | if (!priv->extend_desc) { |
| 1252 | dma_free_coherent(priv->device, |
| 1253 | priv->dma_tx_size * sizeof(struct dma_desc), |
| 1254 | priv->dma_tx, priv->dma_tx_phy); |
| 1255 | dma_free_coherent(priv->device, |
| 1256 | priv->dma_rx_size * sizeof(struct dma_desc), |
| 1257 | priv->dma_rx, priv->dma_rx_phy); |
| 1258 | } else { |
| 1259 | dma_free_coherent(priv->device, priv->dma_tx_size * |
| 1260 | sizeof(struct dma_extended_desc), |
| 1261 | priv->dma_etx, priv->dma_tx_phy); |
| 1262 | dma_free_coherent(priv->device, priv->dma_rx_size * |
| 1263 | sizeof(struct dma_extended_desc), |
| 1264 | priv->dma_erx, priv->dma_rx_phy); |
| 1265 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1266 | kfree(priv->rx_skbuff_dma); |
| 1267 | kfree(priv->rx_skbuff); |
Rayagond Kokatanur | cf32dee | 2013-03-26 04:43:09 +0000 | [diff] [blame] | 1268 | kfree(priv->tx_skbuff_dma); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1269 | kfree(priv->tx_skbuff); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1270 | } |
| 1271 | |
| 1272 | /** |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1273 | * stmmac_dma_operation_mode - HW DMA operation mode |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1274 | * @priv: driver private structure |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1275 | * Description: it is used for configuring the DMA operation mode register in |
| 1276 | * order to program the tx/rx DMA thresholds or Store-And-Forward mode. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1277 | */ |
| 1278 | static void stmmac_dma_operation_mode(struct stmmac_priv *priv) |
| 1279 | { |
Vince Bridgers | f88203a | 2015-04-15 11:17:42 -0500 | [diff] [blame] | 1280 | int rxfifosz = priv->plat->rx_fifo_size; |
| 1281 | |
Sonic Zhang | e2a240c | 2013-08-28 18:55:39 +0800 | [diff] [blame] | 1282 | if (priv->plat->force_thresh_dma_mode) |
Vince Bridgers | f88203a | 2015-04-15 11:17:42 -0500 | [diff] [blame] | 1283 | priv->hw->dma->dma_mode(priv->ioaddr, tc, tc, rxfifosz); |
Sonic Zhang | e2a240c | 2013-08-28 18:55:39 +0800 | [diff] [blame] | 1284 | else if (priv->plat->force_sf_dma_mode || priv->plat->tx_coe) { |
Srinivas Kandagatla | 61b8013 | 2011-07-17 20:54:09 +0000 | [diff] [blame] | 1285 | /* |
| 1286 | * In case of GMAC, SF mode can be enabled |
| 1287 | * to perform the TX COE in HW. This depends on: |
Giuseppe CAVALLARO | ebbb293 | 2010-09-17 03:23:40 +0000 | [diff] [blame] | 1288 | * 1) TX COE if actually supported |
| 1289 | * 2) There is no bugged Jumbo frame support |
| 1290 | * that needs to not insert csum in the TDES. |
| 1291 | */ |
Vince Bridgers | f88203a | 2015-04-15 11:17:42 -0500 | [diff] [blame] | 1292 | priv->hw->dma->dma_mode(priv->ioaddr, SF_DMA_MODE, SF_DMA_MODE, |
| 1293 | rxfifosz); |
Sonic Zhang | b2dec11 | 2015-01-30 13:49:32 +0800 | [diff] [blame] | 1294 | priv->xstats.threshold = SF_DMA_MODE; |
Giuseppe CAVALLARO | ebbb293 | 2010-09-17 03:23:40 +0000 | [diff] [blame] | 1295 | } else |
Vince Bridgers | f88203a | 2015-04-15 11:17:42 -0500 | [diff] [blame] | 1296 | priv->hw->dma->dma_mode(priv->ioaddr, tc, SF_DMA_MODE, |
| 1297 | rxfifosz); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1298 | } |
| 1299 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1300 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1301 | * stmmac_tx_clean - to manage the transmission completion |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1302 | * @priv: driver private structure |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1303 | * Description: it reclaims the transmit resources after transmission completes. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1304 | */ |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1305 | static void stmmac_tx_clean(struct stmmac_priv *priv) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1306 | { |
| 1307 | unsigned int txsize = priv->dma_tx_size; |
Beniamino Galvani | 3897957 | 2015-01-21 19:07:27 +0100 | [diff] [blame] | 1308 | unsigned int bytes_compl = 0, pkts_compl = 0; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1309 | |
Giuseppe CAVALLARO | a9097a9 | 2011-10-18 00:01:19 +0000 | [diff] [blame] | 1310 | spin_lock(&priv->tx_lock); |
| 1311 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1312 | priv->xstats.tx_clean++; |
| 1313 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1314 | while (priv->dirty_tx != priv->cur_tx) { |
| 1315 | int last; |
| 1316 | unsigned int entry = priv->dirty_tx % txsize; |
| 1317 | struct sk_buff *skb = priv->tx_skbuff[entry]; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1318 | struct dma_desc *p; |
| 1319 | |
| 1320 | if (priv->extend_desc) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1321 | p = (struct dma_desc *)(priv->dma_etx + entry); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1322 | else |
| 1323 | p = priv->dma_tx + entry; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1324 | |
| 1325 | /* Check if the descriptor is owned by the DMA. */ |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 1326 | if (priv->hw->desc->get_tx_owner(p)) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1327 | break; |
| 1328 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1329 | /* Verify tx error by looking at the last segment. */ |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 1330 | last = priv->hw->desc->get_tx_ls(p); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1331 | if (likely(last)) { |
| 1332 | int tx_error = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1333 | priv->hw->desc->tx_status(&priv->dev->stats, |
| 1334 | &priv->xstats, p, |
| 1335 | priv->ioaddr); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1336 | if (likely(tx_error == 0)) { |
| 1337 | priv->dev->stats.tx_packets++; |
| 1338 | priv->xstats.tx_pkt_n++; |
| 1339 | } else |
| 1340 | priv->dev->stats.tx_errors++; |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 1341 | |
| 1342 | stmmac_get_tx_hwtstamp(priv, entry, skb); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1343 | } |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 1344 | if (netif_msg_tx_done(priv)) |
| 1345 | pr_debug("%s: curr %d, dirty %d\n", __func__, |
| 1346 | priv->cur_tx, priv->dirty_tx); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1347 | |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 1348 | if (likely(priv->tx_skbuff_dma[entry].buf)) { |
| 1349 | if (priv->tx_skbuff_dma[entry].map_as_page) |
| 1350 | dma_unmap_page(priv->device, |
| 1351 | priv->tx_skbuff_dma[entry].buf, |
| 1352 | priv->hw->desc->get_tx_len(p), |
| 1353 | DMA_TO_DEVICE); |
| 1354 | else |
| 1355 | dma_unmap_single(priv->device, |
| 1356 | priv->tx_skbuff_dma[entry].buf, |
| 1357 | priv->hw->desc->get_tx_len(p), |
| 1358 | DMA_TO_DEVICE); |
| 1359 | priv->tx_skbuff_dma[entry].buf = 0; |
| 1360 | priv->tx_skbuff_dma[entry].map_as_page = false; |
Rayagond Kokatanur | cf32dee | 2013-03-26 04:43:09 +0000 | [diff] [blame] | 1361 | } |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1362 | priv->hw->mode->clean_desc3(priv, p); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1363 | |
| 1364 | if (likely(skb != NULL)) { |
Beniamino Galvani | 3897957 | 2015-01-21 19:07:27 +0100 | [diff] [blame] | 1365 | pkts_compl++; |
| 1366 | bytes_compl += skb->len; |
Eric W. Biederman | 7c565c3 | 2014-03-15 18:11:09 -0700 | [diff] [blame] | 1367 | dev_consume_skb_any(skb); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1368 | priv->tx_skbuff[entry] = NULL; |
| 1369 | } |
| 1370 | |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1371 | priv->hw->desc->release_tx_desc(p, priv->mode); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1372 | |
Giuseppe CAVALLARO | 13497f5 | 2012-06-04 06:36:22 +0000 | [diff] [blame] | 1373 | priv->dirty_tx++; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1374 | } |
Beniamino Galvani | 3897957 | 2015-01-21 19:07:27 +0100 | [diff] [blame] | 1375 | |
| 1376 | netdev_completed_queue(priv->dev, pkts_compl, bytes_compl); |
| 1377 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1378 | if (unlikely(netif_queue_stopped(priv->dev) && |
| 1379 | stmmac_tx_avail(priv) > STMMAC_TX_THRESH(priv))) { |
| 1380 | netif_tx_lock(priv->dev); |
| 1381 | if (netif_queue_stopped(priv->dev) && |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1382 | stmmac_tx_avail(priv) > STMMAC_TX_THRESH(priv)) { |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 1383 | if (netif_msg_tx_done(priv)) |
| 1384 | pr_debug("%s: restart transmit\n", __func__); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1385 | netif_wake_queue(priv->dev); |
| 1386 | } |
| 1387 | netif_tx_unlock(priv->dev); |
| 1388 | } |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1389 | |
| 1390 | if ((priv->eee_enabled) && (!priv->tx_path_in_lpi_mode)) { |
| 1391 | stmmac_enable_eee_mode(priv); |
Giuseppe CAVALLARO | f5351ef | 2013-06-18 07:03:23 +0200 | [diff] [blame] | 1392 | mod_timer(&priv->eee_ctrl_timer, STMMAC_LPI_T(eee_timer)); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1393 | } |
Giuseppe CAVALLARO | a9097a9 | 2011-10-18 00:01:19 +0000 | [diff] [blame] | 1394 | spin_unlock(&priv->tx_lock); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1395 | } |
| 1396 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1397 | static inline void stmmac_enable_dma_irq(struct stmmac_priv *priv) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1398 | { |
Giuseppe CAVALLARO | 7284a3f | 2012-11-25 23:10:41 +0000 | [diff] [blame] | 1399 | priv->hw->dma->enable_dma_irq(priv->ioaddr); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1400 | } |
| 1401 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1402 | static inline void stmmac_disable_dma_irq(struct stmmac_priv *priv) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1403 | { |
Giuseppe CAVALLARO | 7284a3f | 2012-11-25 23:10:41 +0000 | [diff] [blame] | 1404 | priv->hw->dma->disable_dma_irq(priv->ioaddr); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1405 | } |
| 1406 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1407 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1408 | * stmmac_tx_err - to manage the tx error |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1409 | * @priv: driver private structure |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1410 | * Description: it cleans the descriptors and restarts the transmission |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1411 | * in case of transmission errors. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1412 | */ |
| 1413 | static void stmmac_tx_err(struct stmmac_priv *priv) |
| 1414 | { |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1415 | int i; |
| 1416 | int txsize = priv->dma_tx_size; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1417 | netif_stop_queue(priv->dev); |
| 1418 | |
Giuseppe CAVALLARO | ad01b7d | 2010-08-23 20:40:42 +0000 | [diff] [blame] | 1419 | priv->hw->dma->stop_tx(priv->ioaddr); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1420 | dma_free_tx_skbufs(priv); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1421 | for (i = 0; i < txsize; i++) |
| 1422 | if (priv->extend_desc) |
| 1423 | priv->hw->desc->init_tx_desc(&priv->dma_etx[i].basic, |
| 1424 | priv->mode, |
| 1425 | (i == txsize - 1)); |
| 1426 | else |
| 1427 | priv->hw->desc->init_tx_desc(&priv->dma_tx[i], |
| 1428 | priv->mode, |
| 1429 | (i == txsize - 1)); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1430 | priv->dirty_tx = 0; |
| 1431 | priv->cur_tx = 0; |
Beniamino Galvani | 3897957 | 2015-01-21 19:07:27 +0100 | [diff] [blame] | 1432 | netdev_reset_queue(priv->dev); |
Giuseppe CAVALLARO | ad01b7d | 2010-08-23 20:40:42 +0000 | [diff] [blame] | 1433 | priv->hw->dma->start_tx(priv->ioaddr); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1434 | |
| 1435 | priv->dev->stats.tx_errors++; |
| 1436 | netif_wake_queue(priv->dev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1437 | } |
| 1438 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1439 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1440 | * stmmac_dma_interrupt - DMA ISR |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1441 | * @priv: driver private structure |
| 1442 | * Description: this is the DMA ISR. It is called by the main ISR. |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1443 | * It calls the dwmac dma routine and schedule poll method in case of some |
| 1444 | * work can be done. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1445 | */ |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 1446 | static void stmmac_dma_interrupt(struct stmmac_priv *priv) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1447 | { |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 1448 | int status; |
Vince Bridgers | f88203a | 2015-04-15 11:17:42 -0500 | [diff] [blame] | 1449 | int rxfifosz = priv->plat->rx_fifo_size; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1450 | |
Giuseppe CAVALLARO | ad01b7d | 2010-08-23 20:40:42 +0000 | [diff] [blame] | 1451 | status = priv->hw->dma->dma_interrupt(priv->ioaddr, &priv->xstats); |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1452 | if (likely((status & handle_rx)) || (status & handle_tx)) { |
| 1453 | if (likely(napi_schedule_prep(&priv->napi))) { |
| 1454 | stmmac_disable_dma_irq(priv); |
| 1455 | __napi_schedule(&priv->napi); |
| 1456 | } |
| 1457 | } |
| 1458 | if (unlikely(status & tx_hard_error_bump_tc)) { |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 1459 | /* Try to bump up the dma threshold on this failure */ |
Sonic Zhang | b2dec11 | 2015-01-30 13:49:32 +0800 | [diff] [blame] | 1460 | if (unlikely(priv->xstats.threshold != SF_DMA_MODE) && |
| 1461 | (tc <= 256)) { |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 1462 | tc += 64; |
Sonic Zhang | c405abe | 2015-01-22 14:55:56 +0800 | [diff] [blame] | 1463 | if (priv->plat->force_thresh_dma_mode) |
Vince Bridgers | f88203a | 2015-04-15 11:17:42 -0500 | [diff] [blame] | 1464 | priv->hw->dma->dma_mode(priv->ioaddr, tc, tc, |
| 1465 | rxfifosz); |
Sonic Zhang | c405abe | 2015-01-22 14:55:56 +0800 | [diff] [blame] | 1466 | else |
| 1467 | priv->hw->dma->dma_mode(priv->ioaddr, tc, |
Vince Bridgers | f88203a | 2015-04-15 11:17:42 -0500 | [diff] [blame] | 1468 | SF_DMA_MODE, rxfifosz); |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 1469 | priv->xstats.threshold = tc; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1470 | } |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 1471 | } else if (unlikely(status == tx_hard_error)) |
| 1472 | stmmac_tx_err(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1473 | } |
| 1474 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1475 | /** |
| 1476 | * stmmac_mmc_setup: setup the Mac Management Counters (MMC) |
| 1477 | * @priv: driver private structure |
| 1478 | * Description: this masks the MMC irq, in fact, the counters are managed in SW. |
| 1479 | */ |
Giuseppe CAVALLARO | 1c901a4 | 2011-09-01 21:51:38 +0000 | [diff] [blame] | 1480 | static void stmmac_mmc_setup(struct stmmac_priv *priv) |
| 1481 | { |
| 1482 | unsigned int mode = MMC_CNTRL_RESET_ON_READ | MMC_CNTRL_COUNTER_RESET | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1483 | MMC_CNTRL_PRESET | MMC_CNTRL_FULL_HALF_PRESET; |
Giuseppe CAVALLARO | 1c901a4 | 2011-09-01 21:51:38 +0000 | [diff] [blame] | 1484 | |
Giuseppe CAVALLARO | 1c901a4 | 2011-09-01 21:51:38 +0000 | [diff] [blame] | 1485 | dwmac_mmc_intr_all_mask(priv->ioaddr); |
Giuseppe CAVALLARO | 4f795b2 | 2011-11-18 05:00:20 +0000 | [diff] [blame] | 1486 | |
| 1487 | if (priv->dma_cap.rmon) { |
| 1488 | dwmac_mmc_ctrl(priv->ioaddr, mode); |
| 1489 | memset(&priv->mmc, 0, sizeof(struct stmmac_counters)); |
| 1490 | } else |
Stefan Roese | aae54cf | 2012-01-10 01:47:51 +0000 | [diff] [blame] | 1491 | pr_info(" No MAC Management Counters available\n"); |
Giuseppe CAVALLARO | 1c901a4 | 2011-09-01 21:51:38 +0000 | [diff] [blame] | 1492 | } |
| 1493 | |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1494 | /** |
| 1495 | * stmmac_get_synopsys_id - return the SYINID. |
| 1496 | * @priv: driver private structure |
| 1497 | * Description: this simple function is to decode and return the SYINID |
| 1498 | * starting from the HW core register. |
| 1499 | */ |
Giuseppe CAVALLARO | f0b9d78 | 2011-09-01 21:51:40 +0000 | [diff] [blame] | 1500 | static u32 stmmac_get_synopsys_id(struct stmmac_priv *priv) |
| 1501 | { |
| 1502 | u32 hwid = priv->hw->synopsys_uid; |
| 1503 | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1504 | /* Check Synopsys Id (not available on old chips) */ |
Giuseppe CAVALLARO | f0b9d78 | 2011-09-01 21:51:40 +0000 | [diff] [blame] | 1505 | if (likely(hwid)) { |
| 1506 | u32 uid = ((hwid & 0x0000ff00) >> 8); |
| 1507 | u32 synid = (hwid & 0x000000ff); |
| 1508 | |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 1509 | pr_info("stmmac - user ID: 0x%x, Synopsys ID: 0x%x\n", |
Giuseppe CAVALLARO | f0b9d78 | 2011-09-01 21:51:40 +0000 | [diff] [blame] | 1510 | uid, synid); |
| 1511 | |
| 1512 | return synid; |
| 1513 | } |
| 1514 | return 0; |
| 1515 | } |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 1516 | |
Giuseppe CAVALLARO | 19e30c1 | 2011-11-16 21:58:00 +0000 | [diff] [blame] | 1517 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1518 | * stmmac_selec_desc_mode - to select among: normal/alternate/extend descriptors |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1519 | * @priv: driver private structure |
| 1520 | * Description: select the Enhanced/Alternate or Normal descriptors. |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1521 | * In case of Enhanced/Alternate, it checks if the extended descriptors are |
| 1522 | * supported by the HW capability register. |
Giuseppe CAVALLARO | ff3dd78 | 2012-06-04 19:22:55 +0000 | [diff] [blame] | 1523 | */ |
Giuseppe CAVALLARO | 19e30c1 | 2011-11-16 21:58:00 +0000 | [diff] [blame] | 1524 | static void stmmac_selec_desc_mode(struct stmmac_priv *priv) |
| 1525 | { |
| 1526 | if (priv->plat->enh_desc) { |
| 1527 | pr_info(" Enhanced/Alternate descriptors\n"); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1528 | |
| 1529 | /* GMAC older than 3.50 has no extended descriptors */ |
| 1530 | if (priv->synopsys_id >= DWMAC_CORE_3_50) { |
| 1531 | pr_info("\tEnabled extended descriptors\n"); |
| 1532 | priv->extend_desc = 1; |
| 1533 | } else |
| 1534 | pr_warn("Extended descriptors not supported\n"); |
| 1535 | |
Giuseppe CAVALLARO | 19e30c1 | 2011-11-16 21:58:00 +0000 | [diff] [blame] | 1536 | priv->hw->desc = &enh_desc_ops; |
| 1537 | } else { |
| 1538 | pr_info(" Normal descriptors\n"); |
| 1539 | priv->hw->desc = &ndesc_ops; |
| 1540 | } |
| 1541 | } |
| 1542 | |
| 1543 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1544 | * stmmac_get_hw_features - get MAC capabilities from the HW cap. register. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1545 | * @priv: driver private structure |
Giuseppe CAVALLARO | 19e30c1 | 2011-11-16 21:58:00 +0000 | [diff] [blame] | 1546 | * Description: |
| 1547 | * new GMAC chip generations have a new register to indicate the |
| 1548 | * presence of the optional feature/functions. |
| 1549 | * This can be also used to override the value passed through the |
| 1550 | * platform and necessary for old MAC10/100 and GMAC chips. |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 1551 | */ |
| 1552 | static int stmmac_get_hw_features(struct stmmac_priv *priv) |
| 1553 | { |
Giuseppe CAVALLARO | 5e6efe8 | 2011-10-26 19:43:07 +0000 | [diff] [blame] | 1554 | u32 hw_cap = 0; |
Giuseppe CAVALLARO | 3c20f72 | 2011-10-26 19:43:09 +0000 | [diff] [blame] | 1555 | |
Giuseppe CAVALLARO | 5e6efe8 | 2011-10-26 19:43:07 +0000 | [diff] [blame] | 1556 | if (priv->hw->dma->get_hw_feature) { |
| 1557 | hw_cap = priv->hw->dma->get_hw_feature(priv->ioaddr); |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 1558 | |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1559 | priv->dma_cap.mbps_10_100 = (hw_cap & DMA_HW_FEAT_MIISEL); |
| 1560 | priv->dma_cap.mbps_1000 = (hw_cap & DMA_HW_FEAT_GMIISEL) >> 1; |
| 1561 | priv->dma_cap.half_duplex = (hw_cap & DMA_HW_FEAT_HDSEL) >> 2; |
| 1562 | priv->dma_cap.hash_filter = (hw_cap & DMA_HW_FEAT_HASHSEL) >> 4; |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1563 | priv->dma_cap.multi_addr = (hw_cap & DMA_HW_FEAT_ADDMAC) >> 5; |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1564 | priv->dma_cap.pcs = (hw_cap & DMA_HW_FEAT_PCSSEL) >> 6; |
| 1565 | priv->dma_cap.sma_mdio = (hw_cap & DMA_HW_FEAT_SMASEL) >> 8; |
| 1566 | priv->dma_cap.pmt_remote_wake_up = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1567 | (hw_cap & DMA_HW_FEAT_RWKSEL) >> 9; |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1568 | priv->dma_cap.pmt_magic_frame = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1569 | (hw_cap & DMA_HW_FEAT_MGKSEL) >> 10; |
Giuseppe CAVALLARO | 19e30c1 | 2011-11-16 21:58:00 +0000 | [diff] [blame] | 1570 | /* MMC */ |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1571 | priv->dma_cap.rmon = (hw_cap & DMA_HW_FEAT_MMCSEL) >> 11; |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1572 | /* IEEE 1588-2002 */ |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1573 | priv->dma_cap.time_stamp = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1574 | (hw_cap & DMA_HW_FEAT_TSVER1SEL) >> 12; |
| 1575 | /* IEEE 1588-2008 */ |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1576 | priv->dma_cap.atime_stamp = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1577 | (hw_cap & DMA_HW_FEAT_TSVER2SEL) >> 13; |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 1578 | /* 802.3az - Energy-Efficient Ethernet (EEE) */ |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1579 | priv->dma_cap.eee = (hw_cap & DMA_HW_FEAT_EEESEL) >> 14; |
| 1580 | priv->dma_cap.av = (hw_cap & DMA_HW_FEAT_AVSEL) >> 15; |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 1581 | /* TX and RX csum */ |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1582 | priv->dma_cap.tx_coe = (hw_cap & DMA_HW_FEAT_TXCOESEL) >> 16; |
| 1583 | priv->dma_cap.rx_coe_type1 = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1584 | (hw_cap & DMA_HW_FEAT_RXTYP1COE) >> 17; |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1585 | priv->dma_cap.rx_coe_type2 = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1586 | (hw_cap & DMA_HW_FEAT_RXTYP2COE) >> 18; |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1587 | priv->dma_cap.rxfifo_over_2048 = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1588 | (hw_cap & DMA_HW_FEAT_RXFIFOSIZE) >> 19; |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 1589 | /* TX and RX number of channels */ |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1590 | priv->dma_cap.number_rx_channel = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1591 | (hw_cap & DMA_HW_FEAT_RXCHCNT) >> 20; |
Rayagond Kokatanur | 1db123f | 2011-10-18 00:01:22 +0000 | [diff] [blame] | 1592 | priv->dma_cap.number_tx_channel = |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1593 | (hw_cap & DMA_HW_FEAT_TXCHCNT) >> 22; |
| 1594 | /* Alternate (enhanced) DESC mode */ |
| 1595 | priv->dma_cap.enh_desc = (hw_cap & DMA_HW_FEAT_ENHDESSEL) >> 24; |
Giuseppe CAVALLARO | 19e30c1 | 2011-11-16 21:58:00 +0000 | [diff] [blame] | 1596 | } |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 1597 | |
| 1598 | return hw_cap; |
| 1599 | } |
| 1600 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1601 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1602 | * stmmac_check_ether_addr - check if the MAC addr is valid |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1603 | * @priv: driver private structure |
| 1604 | * Description: |
| 1605 | * it is to verify if the MAC address is valid, in case of failures it |
| 1606 | * generates a random MAC address |
| 1607 | */ |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1608 | static void stmmac_check_ether_addr(struct stmmac_priv *priv) |
| 1609 | { |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1610 | if (!is_valid_ether_addr(priv->dev->dev_addr)) { |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 1611 | priv->hw->mac->get_umac_addr(priv->hw, |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1612 | priv->dev->dev_addr, 0); |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1613 | if (!is_valid_ether_addr(priv->dev->dev_addr)) |
Danny Kukawka | f2cedb6 | 2012-02-15 06:45:39 +0000 | [diff] [blame] | 1614 | eth_hw_addr_random(priv->dev); |
Hans de Goede | c88460b | 2014-01-26 15:50:44 +0100 | [diff] [blame] | 1615 | pr_info("%s: device MAC address %pM\n", priv->dev->name, |
| 1616 | priv->dev->dev_addr); |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1617 | } |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1618 | } |
| 1619 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1620 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1621 | * stmmac_init_dma_engine - DMA init. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1622 | * @priv: driver private structure |
| 1623 | * Description: |
| 1624 | * It inits the DMA invoking the specific MAC/GMAC callback. |
| 1625 | * Some DMA parameters can be passed from the platform; |
| 1626 | * in case of these are not passed a default is kept for the MAC or GMAC. |
| 1627 | */ |
Giuseppe CAVALLARO | 0f1f88a | 2012-04-18 19:48:21 +0000 | [diff] [blame] | 1628 | static int stmmac_init_dma_engine(struct stmmac_priv *priv) |
| 1629 | { |
| 1630 | int pbl = DEFAULT_DMA_PBL, fixed_burst = 0, burst_len = 0; |
Giuseppe CAVALLARO | b9cde0a | 2012-05-13 22:18:42 +0000 | [diff] [blame] | 1631 | int mixed_burst = 0; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1632 | int atds = 0; |
Giuseppe CAVALLARO | 0f1f88a | 2012-04-18 19:48:21 +0000 | [diff] [blame] | 1633 | |
Giuseppe CAVALLARO | 0f1f88a | 2012-04-18 19:48:21 +0000 | [diff] [blame] | 1634 | if (priv->plat->dma_cfg) { |
| 1635 | pbl = priv->plat->dma_cfg->pbl; |
| 1636 | fixed_burst = priv->plat->dma_cfg->fixed_burst; |
Giuseppe CAVALLARO | b9cde0a | 2012-05-13 22:18:42 +0000 | [diff] [blame] | 1637 | mixed_burst = priv->plat->dma_cfg->mixed_burst; |
Giuseppe CAVALLARO | 0f1f88a | 2012-04-18 19:48:21 +0000 | [diff] [blame] | 1638 | burst_len = priv->plat->dma_cfg->burst_len; |
| 1639 | } |
| 1640 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1641 | if (priv->extend_desc && (priv->mode == STMMAC_RING_MODE)) |
| 1642 | atds = 1; |
| 1643 | |
Giuseppe CAVALLARO | b9cde0a | 2012-05-13 22:18:42 +0000 | [diff] [blame] | 1644 | return priv->hw->dma->init(priv->ioaddr, pbl, fixed_burst, mixed_burst, |
Giuseppe CAVALLARO | 0f1f88a | 2012-04-18 19:48:21 +0000 | [diff] [blame] | 1645 | burst_len, priv->dma_tx_phy, |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1646 | priv->dma_rx_phy, atds); |
Giuseppe CAVALLARO | 0f1f88a | 2012-04-18 19:48:21 +0000 | [diff] [blame] | 1647 | } |
| 1648 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1649 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1650 | * stmmac_tx_timer - mitigation sw timer for tx. |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1651 | * @data: data pointer |
| 1652 | * Description: |
| 1653 | * This is the timer handler to directly invoke the stmmac_tx_clean. |
| 1654 | */ |
| 1655 | static void stmmac_tx_timer(unsigned long data) |
| 1656 | { |
| 1657 | struct stmmac_priv *priv = (struct stmmac_priv *)data; |
| 1658 | |
| 1659 | stmmac_tx_clean(priv); |
| 1660 | } |
| 1661 | |
| 1662 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1663 | * stmmac_init_tx_coalesce - init tx mitigation options. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1664 | * @priv: driver private structure |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1665 | * Description: |
| 1666 | * This inits the transmit coalesce parameters: i.e. timer rate, |
| 1667 | * timer handler and default threshold used for enabling the |
| 1668 | * interrupt on completion bit. |
| 1669 | */ |
| 1670 | static void stmmac_init_tx_coalesce(struct stmmac_priv *priv) |
| 1671 | { |
| 1672 | priv->tx_coal_frames = STMMAC_TX_FRAMES; |
| 1673 | priv->tx_coal_timer = STMMAC_COAL_TX_TIMER; |
| 1674 | init_timer(&priv->txtimer); |
| 1675 | priv->txtimer.expires = STMMAC_COAL_TIMER(priv->tx_coal_timer); |
| 1676 | priv->txtimer.data = (unsigned long)priv; |
| 1677 | priv->txtimer.function = stmmac_tx_timer; |
| 1678 | add_timer(&priv->txtimer); |
| 1679 | } |
| 1680 | |
| 1681 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1682 | * stmmac_hw_setup - setup mac in a usable state. |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1683 | * @dev : pointer to the device structure. |
| 1684 | * Description: |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1685 | * this is the main function to setup the HW in a usable state because the |
| 1686 | * dma engine is reset, the core registers are configured (e.g. AXI, |
| 1687 | * Checksum features, timers). The DMA is ready to start receiving and |
| 1688 | * transmitting. |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1689 | * Return value: |
| 1690 | * 0 on success and an appropriate (-)ve integer as defined in errno.h |
| 1691 | * file on failure. |
| 1692 | */ |
Huacai Chen | fe131929 | 2014-12-19 22:38:18 +0800 | [diff] [blame] | 1693 | static int stmmac_hw_setup(struct net_device *dev, bool init_ptp) |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1694 | { |
| 1695 | struct stmmac_priv *priv = netdev_priv(dev); |
| 1696 | int ret; |
| 1697 | |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1698 | /* DMA initialization and SW reset */ |
| 1699 | ret = stmmac_init_dma_engine(priv); |
| 1700 | if (ret < 0) { |
| 1701 | pr_err("%s: DMA engine initialization failed\n", __func__); |
| 1702 | return ret; |
| 1703 | } |
| 1704 | |
| 1705 | /* Copy the MAC addr into the HW */ |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 1706 | priv->hw->mac->set_umac_addr(priv->hw, dev->dev_addr, 0); |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1707 | |
| 1708 | /* If required, perform hw setup of the bus. */ |
| 1709 | if (priv->plat->bus_setup) |
| 1710 | priv->plat->bus_setup(priv->ioaddr); |
| 1711 | |
| 1712 | /* Initialize the MAC Core */ |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 1713 | priv->hw->mac->core_init(priv->hw, dev->mtu); |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1714 | |
Giuseppe CAVALLARO | 978aded | 2014-08-25 14:56:18 +0200 | [diff] [blame] | 1715 | ret = priv->hw->mac->rx_ipc(priv->hw); |
| 1716 | if (!ret) { |
| 1717 | pr_warn(" RX IPC Checksum Offload disabled\n"); |
| 1718 | priv->plat->rx_coe = STMMAC_RX_COE_NONE; |
Giuseppe CAVALLARO | d2afb5b | 2014-09-01 09:17:52 +0200 | [diff] [blame] | 1719 | priv->hw->rx_csum = 0; |
Giuseppe CAVALLARO | 978aded | 2014-08-25 14:56:18 +0200 | [diff] [blame] | 1720 | } |
| 1721 | |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1722 | /* Enable the MAC Rx/Tx */ |
| 1723 | stmmac_set_mac(priv->ioaddr, true); |
| 1724 | |
| 1725 | /* Set the HW DMA mode and the COE */ |
| 1726 | stmmac_dma_operation_mode(priv); |
| 1727 | |
| 1728 | stmmac_mmc_setup(priv); |
| 1729 | |
Huacai Chen | fe131929 | 2014-12-19 22:38:18 +0800 | [diff] [blame] | 1730 | if (init_ptp) { |
| 1731 | ret = stmmac_init_ptp(priv); |
| 1732 | if (ret && ret != -EOPNOTSUPP) |
| 1733 | pr_warn("%s: failed PTP initialisation\n", __func__); |
| 1734 | } |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1735 | |
Giuseppe CAVALLARO | 50fb4f74 | 2014-11-04 15:49:33 +0100 | [diff] [blame] | 1736 | #ifdef CONFIG_DEBUG_FS |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1737 | ret = stmmac_init_fs(dev); |
| 1738 | if (ret < 0) |
| 1739 | pr_warn("%s: failed debugFS registration\n", __func__); |
| 1740 | #endif |
| 1741 | /* Start the ball rolling... */ |
| 1742 | pr_debug("%s: DMA RX/TX processes started...\n", dev->name); |
| 1743 | priv->hw->dma->start_tx(priv->ioaddr); |
| 1744 | priv->hw->dma->start_rx(priv->ioaddr); |
| 1745 | |
| 1746 | /* Dump DMA/MAC registers */ |
| 1747 | if (netif_msg_hw(priv)) { |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 1748 | priv->hw->mac->dump_regs(priv->hw); |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1749 | priv->hw->dma->dump_regs(priv->ioaddr); |
| 1750 | } |
| 1751 | priv->tx_lpi_timer = STMMAC_DEFAULT_TWT_LS; |
| 1752 | |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1753 | if ((priv->use_riwt) && (priv->hw->dma->rx_watchdog)) { |
| 1754 | priv->rx_riwt = MAX_DMA_RIWT; |
| 1755 | priv->hw->dma->rx_watchdog(priv->ioaddr, MAX_DMA_RIWT); |
| 1756 | } |
| 1757 | |
| 1758 | if (priv->pcs && priv->hw->mac->ctrl_ane) |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 1759 | priv->hw->mac->ctrl_ane(priv->hw, 0); |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1760 | |
| 1761 | return 0; |
| 1762 | } |
| 1763 | |
| 1764 | /** |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1765 | * stmmac_open - open entry point of the driver |
| 1766 | * @dev : pointer to the device structure. |
| 1767 | * Description: |
| 1768 | * This function is the open entry point of the driver. |
| 1769 | * Return value: |
| 1770 | * 0 on success and an appropriate (-)ve integer as defined in errno.h |
| 1771 | * file on failure. |
| 1772 | */ |
| 1773 | static int stmmac_open(struct net_device *dev) |
| 1774 | { |
| 1775 | struct stmmac_priv *priv = netdev_priv(dev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1776 | int ret; |
| 1777 | |
Francesco Virlinzi | 4bfcbd7 | 2012-04-18 19:48:20 +0000 | [diff] [blame] | 1778 | stmmac_check_ether_addr(priv); |
| 1779 | |
Byungho An | 4d8f082 | 2013-04-07 17:56:16 +0000 | [diff] [blame] | 1780 | if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI && |
| 1781 | priv->pcs != STMMAC_PCS_RTBI) { |
Giuseppe CAVALLARO | e58bb43 | 2013-03-26 04:43:08 +0000 | [diff] [blame] | 1782 | ret = stmmac_init_phy(dev); |
| 1783 | if (ret) { |
| 1784 | pr_err("%s: Cannot attach to PHY (error: %d)\n", |
| 1785 | __func__, ret); |
Hans de Goede | 89df20d | 2014-05-20 11:38:18 +0200 | [diff] [blame] | 1786 | return ret; |
Giuseppe CAVALLARO | e58bb43 | 2013-03-26 04:43:08 +0000 | [diff] [blame] | 1787 | } |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1788 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1789 | |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1790 | /* Extra statistics */ |
| 1791 | memset(&priv->xstats, 0, sizeof(struct stmmac_extra_stats)); |
| 1792 | priv->xstats.threshold = tc; |
| 1793 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1794 | /* Create and initialize the TX/RX descriptors chains. */ |
| 1795 | priv->dma_tx_size = STMMAC_ALIGN(dma_txsize); |
| 1796 | priv->dma_rx_size = STMMAC_ALIGN(dma_rxsize); |
| 1797 | priv->dma_buf_sz = STMMAC_ALIGN(buf_sz); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1798 | |
Tobias Klauser | 7262b7b | 2014-02-22 13:09:03 +0100 | [diff] [blame] | 1799 | ret = alloc_dma_desc_resources(priv); |
Srinivas Kandagatla | 09f8d69 | 2014-01-16 10:52:06 +0000 | [diff] [blame] | 1800 | if (ret < 0) { |
| 1801 | pr_err("%s: DMA descriptors allocation failed\n", __func__); |
| 1802 | goto dma_desc_error; |
| 1803 | } |
| 1804 | |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 1805 | ret = init_dma_desc_rings(dev, GFP_KERNEL); |
| 1806 | if (ret < 0) { |
| 1807 | pr_err("%s: DMA descriptors initialization failed\n", __func__); |
| 1808 | goto init_error; |
| 1809 | } |
| 1810 | |
Huacai Chen | fe131929 | 2014-12-19 22:38:18 +0800 | [diff] [blame] | 1811 | ret = stmmac_hw_setup(dev, true); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1812 | if (ret < 0) { |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1813 | pr_err("%s: Hw setup failed\n", __func__); |
Giuseppe CAVALLARO | c9324d1 | 2013-07-04 06:18:07 +0200 | [diff] [blame] | 1814 | goto init_error; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1815 | } |
| 1816 | |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 1817 | stmmac_init_tx_coalesce(priv); |
| 1818 | |
Srinivas Kandagatla | 523f11b | 2014-01-16 10:52:14 +0000 | [diff] [blame] | 1819 | if (priv->phydev) |
| 1820 | phy_start(priv->phydev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1821 | |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1822 | /* Request the IRQ lines */ |
| 1823 | ret = request_irq(dev->irq, stmmac_interrupt, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1824 | IRQF_SHARED, dev->name, dev); |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1825 | if (unlikely(ret < 0)) { |
| 1826 | pr_err("%s: ERROR: allocating the IRQ %d (error: %d)\n", |
| 1827 | __func__, dev->irq, ret); |
Giuseppe CAVALLARO | c9324d1 | 2013-07-04 06:18:07 +0200 | [diff] [blame] | 1828 | goto init_error; |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1829 | } |
| 1830 | |
Francesco Virlinzi | 7a13f8f | 2012-02-15 00:10:38 +0000 | [diff] [blame] | 1831 | /* Request the Wake IRQ in case of another line is used for WoL */ |
| 1832 | if (priv->wol_irq != dev->irq) { |
| 1833 | ret = request_irq(priv->wol_irq, stmmac_interrupt, |
| 1834 | IRQF_SHARED, dev->name, dev); |
| 1835 | if (unlikely(ret < 0)) { |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1836 | pr_err("%s: ERROR: allocating the WoL IRQ %d (%d)\n", |
| 1837 | __func__, priv->wol_irq, ret); |
Giuseppe CAVALLARO | c9324d1 | 2013-07-04 06:18:07 +0200 | [diff] [blame] | 1838 | goto wolirq_error; |
Francesco Virlinzi | 7a13f8f | 2012-02-15 00:10:38 +0000 | [diff] [blame] | 1839 | } |
| 1840 | } |
| 1841 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1842 | /* Request the IRQ lines */ |
Chen-Yu Tsai | d7ec858 | 2014-05-29 22:31:40 +0800 | [diff] [blame] | 1843 | if (priv->lpi_irq > 0) { |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1844 | ret = request_irq(priv->lpi_irq, stmmac_interrupt, IRQF_SHARED, |
| 1845 | dev->name, dev); |
| 1846 | if (unlikely(ret < 0)) { |
| 1847 | pr_err("%s: ERROR: allocating the LPI IRQ %d (%d)\n", |
| 1848 | __func__, priv->lpi_irq, ret); |
Giuseppe CAVALLARO | c9324d1 | 2013-07-04 06:18:07 +0200 | [diff] [blame] | 1849 | goto lpiirq_error; |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1850 | } |
| 1851 | } |
| 1852 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1853 | napi_enable(&priv->napi); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1854 | netif_start_queue(dev); |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1855 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1856 | return 0; |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1857 | |
Giuseppe CAVALLARO | c9324d1 | 2013-07-04 06:18:07 +0200 | [diff] [blame] | 1858 | lpiirq_error: |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1859 | if (priv->wol_irq != dev->irq) |
| 1860 | free_irq(priv->wol_irq, dev); |
Giuseppe CAVALLARO | c9324d1 | 2013-07-04 06:18:07 +0200 | [diff] [blame] | 1861 | wolirq_error: |
Francesco Virlinzi | 7a13f8f | 2012-02-15 00:10:38 +0000 | [diff] [blame] | 1862 | free_irq(dev->irq, dev); |
| 1863 | |
Giuseppe CAVALLARO | c9324d1 | 2013-07-04 06:18:07 +0200 | [diff] [blame] | 1864 | init_error: |
| 1865 | free_dma_desc_resources(priv); |
Bartlomiej Zolnierkiewicz | 5632913 | 2013-08-09 14:02:08 +0200 | [diff] [blame] | 1866 | dma_desc_error: |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1867 | if (priv->phydev) |
| 1868 | phy_disconnect(priv->phydev); |
Francesco Virlinzi | 4bfcbd7 | 2012-04-18 19:48:20 +0000 | [diff] [blame] | 1869 | |
Giuseppe CAVALLARO | f66ffe2 | 2011-04-10 23:16:45 +0000 | [diff] [blame] | 1870 | return ret; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1871 | } |
| 1872 | |
| 1873 | /** |
| 1874 | * stmmac_release - close entry point of the driver |
| 1875 | * @dev : device pointer. |
| 1876 | * Description: |
| 1877 | * This is the stop entry point of the driver. |
| 1878 | */ |
| 1879 | static int stmmac_release(struct net_device *dev) |
| 1880 | { |
| 1881 | struct stmmac_priv *priv = netdev_priv(dev); |
| 1882 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1883 | if (priv->eee_enabled) |
| 1884 | del_timer_sync(&priv->eee_ctrl_timer); |
| 1885 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1886 | /* Stop and disconnect the PHY */ |
| 1887 | if (priv->phydev) { |
| 1888 | phy_stop(priv->phydev); |
| 1889 | phy_disconnect(priv->phydev); |
| 1890 | priv->phydev = NULL; |
| 1891 | } |
| 1892 | |
| 1893 | netif_stop_queue(dev); |
| 1894 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1895 | napi_disable(&priv->napi); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1896 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 1897 | del_timer_sync(&priv->txtimer); |
| 1898 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1899 | /* Free the IRQ lines */ |
| 1900 | free_irq(dev->irq, dev); |
Francesco Virlinzi | 7a13f8f | 2012-02-15 00:10:38 +0000 | [diff] [blame] | 1901 | if (priv->wol_irq != dev->irq) |
| 1902 | free_irq(priv->wol_irq, dev); |
Chen-Yu Tsai | d7ec858 | 2014-05-29 22:31:40 +0800 | [diff] [blame] | 1903 | if (priv->lpi_irq > 0) |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1904 | free_irq(priv->lpi_irq, dev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1905 | |
| 1906 | /* Stop TX/RX DMA and clear the descriptors */ |
Giuseppe CAVALLARO | ad01b7d | 2010-08-23 20:40:42 +0000 | [diff] [blame] | 1907 | priv->hw->dma->stop_tx(priv->ioaddr); |
| 1908 | priv->hw->dma->stop_rx(priv->ioaddr); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1909 | |
| 1910 | /* Release and free the Rx/Tx resources */ |
| 1911 | free_dma_desc_resources(priv); |
| 1912 | |
avisconti | 19449bf | 2010-10-25 18:58:14 +0000 | [diff] [blame] | 1913 | /* Disable the MAC Rx/Tx */ |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1914 | stmmac_set_mac(priv->ioaddr, false); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1915 | |
| 1916 | netif_carrier_off(dev); |
| 1917 | |
Giuseppe CAVALLARO | 50fb4f74 | 2014-11-04 15:49:33 +0100 | [diff] [blame] | 1918 | #ifdef CONFIG_DEBUG_FS |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1919 | stmmac_exit_fs(); |
| 1920 | #endif |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 1921 | |
Rayagond Kokatanur | 92ba688 | 2013-03-26 04:43:11 +0000 | [diff] [blame] | 1922 | stmmac_release_ptp(priv); |
| 1923 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1924 | return 0; |
| 1925 | } |
| 1926 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1927 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 1928 | * stmmac_xmit - Tx entry point of the driver |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1929 | * @skb : the socket buffer |
| 1930 | * @dev : device pointer |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 1931 | * Description : this is the tx entry point of the driver. |
| 1932 | * It programs the chain or the ring and supports oversized frames |
| 1933 | * and SG feature. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1934 | */ |
| 1935 | static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) |
| 1936 | { |
| 1937 | struct stmmac_priv *priv = netdev_priv(dev); |
| 1938 | unsigned int txsize = priv->dma_tx_size; |
| 1939 | unsigned int entry; |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1940 | int i, csum_insertion = 0, is_jumbo = 0; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1941 | int nfrags = skb_shinfo(skb)->nr_frags; |
| 1942 | struct dma_desc *desc, *first; |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 1943 | unsigned int nopaged_len = skb_headlen(skb); |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1944 | unsigned int enh_desc = priv->plat->enh_desc; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1945 | |
Fabrice Gasnier | 16ee817 | 2014-11-04 17:08:05 +0100 | [diff] [blame] | 1946 | spin_lock(&priv->tx_lock); |
| 1947 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1948 | if (unlikely(stmmac_tx_avail(priv) < nfrags + 1)) { |
Fabrice Gasnier | 16ee817 | 2014-11-04 17:08:05 +0100 | [diff] [blame] | 1949 | spin_unlock(&priv->tx_lock); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1950 | if (!netif_queue_stopped(dev)) { |
| 1951 | netif_stop_queue(dev); |
| 1952 | /* This is a hard error, log it. */ |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1953 | pr_err("%s: Tx Ring full when queue awake\n", __func__); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1954 | } |
| 1955 | return NETDEV_TX_BUSY; |
| 1956 | } |
| 1957 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 1958 | if (priv->tx_path_in_lpi_mode) |
| 1959 | stmmac_disable_eee_mode(priv); |
| 1960 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1961 | entry = priv->cur_tx % txsize; |
| 1962 | |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 1963 | csum_insertion = (skb->ip_summed == CHECKSUM_PARTIAL); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1964 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1965 | if (priv->extend_desc) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1966 | desc = (struct dma_desc *)(priv->dma_etx + entry); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1967 | else |
| 1968 | desc = priv->dma_tx + entry; |
| 1969 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1970 | first = desc; |
| 1971 | |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1972 | /* To program the descriptors according to the size of the frame */ |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1973 | if (enh_desc) |
| 1974 | is_jumbo = priv->hw->mode->is_jumbo_frm(skb->len, enh_desc); |
| 1975 | |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1976 | if (likely(!is_jumbo)) { |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1977 | desc->des2 = dma_map_single(priv->device, skb->data, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1978 | nopaged_len, DMA_TO_DEVICE); |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 1979 | if (dma_mapping_error(priv->device, desc->des2)) |
| 1980 | goto dma_map_err; |
| 1981 | priv->tx_skbuff_dma[entry].buf = desc->des2; |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 1982 | priv->hw->desc->prepare_tx_desc(desc, 1, nopaged_len, |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 1983 | csum_insertion, priv->mode); |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1984 | } else { |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1985 | desc = first; |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1986 | entry = priv->hw->mode->jumbo_frm(priv, skb, csum_insertion); |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 1987 | if (unlikely(entry < 0)) |
| 1988 | goto dma_map_err; |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 1989 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1990 | |
| 1991 | for (i = 0; i < nfrags; i++) { |
Eric Dumazet | 9e903e0 | 2011-10-18 21:00:24 +0000 | [diff] [blame] | 1992 | const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
| 1993 | int len = skb_frag_size(frag); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1994 | |
damuzi000 | 75e4364 | 2014-01-17 23:47:59 +0800 | [diff] [blame] | 1995 | priv->tx_skbuff[entry] = NULL; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 1996 | entry = (++priv->cur_tx) % txsize; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1997 | if (priv->extend_desc) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 1998 | desc = (struct dma_desc *)(priv->dma_etx + entry); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 1999 | else |
| 2000 | desc = priv->dma_tx + entry; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2001 | |
Ian Campbell | f722380 | 2011-09-21 21:53:20 +0000 | [diff] [blame] | 2002 | desc->des2 = skb_frag_dma_map(priv->device, frag, 0, len, |
| 2003 | DMA_TO_DEVICE); |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 2004 | if (dma_mapping_error(priv->device, desc->des2)) |
| 2005 | goto dma_map_err; /* should reuse desc w/o issues */ |
| 2006 | |
| 2007 | priv->tx_skbuff_dma[entry].buf = desc->des2; |
| 2008 | priv->tx_skbuff_dma[entry].map_as_page = true; |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 2009 | priv->hw->desc->prepare_tx_desc(desc, 0, len, csum_insertion, |
| 2010 | priv->mode); |
Shiraz Hashim | eb0dc4b | 2011-07-17 20:54:08 +0000 | [diff] [blame] | 2011 | wmb(); |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 2012 | priv->hw->desc->set_tx_owner(desc); |
Deepak Sikri | 8e83989 | 2012-07-08 21:14:45 +0000 | [diff] [blame] | 2013 | wmb(); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2014 | } |
| 2015 | |
damuzi000 | 75e4364 | 2014-01-17 23:47:59 +0800 | [diff] [blame] | 2016 | priv->tx_skbuff[entry] = skb; |
| 2017 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 2018 | /* Finalize the latest segment. */ |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 2019 | priv->hw->desc->close_tx_desc(desc); |
Giuseppe CAVALLARO | 73cfe26 | 2009-11-22 22:59:56 +0000 | [diff] [blame] | 2020 | |
Shiraz Hashim | eb0dc4b | 2011-07-17 20:54:08 +0000 | [diff] [blame] | 2021 | wmb(); |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 2022 | /* According to the coalesce parameter the IC bit for the latest |
| 2023 | * segment could be reset and the timer re-started to invoke the |
| 2024 | * stmmac_tx function. This approach takes care about the fragments. |
| 2025 | */ |
| 2026 | priv->tx_count_frames += nfrags + 1; |
| 2027 | if (priv->tx_coal_frames > priv->tx_count_frames) { |
| 2028 | priv->hw->desc->clear_tx_ic(desc); |
| 2029 | priv->xstats.tx_reset_ic_bit++; |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 2030 | mod_timer(&priv->txtimer, |
| 2031 | STMMAC_COAL_TIMER(priv->tx_coal_timer)); |
| 2032 | } else |
| 2033 | priv->tx_count_frames = 0; |
Shiraz Hashim | eb0dc4b | 2011-07-17 20:54:08 +0000 | [diff] [blame] | 2034 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2035 | /* To avoid raise condition */ |
Giuseppe CAVALLARO | db98a0b | 2010-01-06 23:07:17 +0000 | [diff] [blame] | 2036 | priv->hw->desc->set_tx_owner(first); |
Deepak Sikri | 8e83989 | 2012-07-08 21:14:45 +0000 | [diff] [blame] | 2037 | wmb(); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2038 | |
| 2039 | priv->cur_tx++; |
| 2040 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2041 | if (netif_msg_pktdata(priv)) { |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2042 | pr_debug("%s: curr %d dirty=%d entry=%d, first=%p, nfrags=%d", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2043 | __func__, (priv->cur_tx % txsize), |
| 2044 | (priv->dirty_tx % txsize), entry, first, nfrags); |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2045 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2046 | if (priv->extend_desc) |
| 2047 | stmmac_display_ring((void *)priv->dma_etx, txsize, 1); |
| 2048 | else |
| 2049 | stmmac_display_ring((void *)priv->dma_tx, txsize, 0); |
| 2050 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2051 | pr_debug(">>> frame to be transmitted: "); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2052 | print_pkt(skb->data, skb->len); |
| 2053 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2054 | if (unlikely(stmmac_tx_avail(priv) <= (MAX_SKB_FRAGS + 1))) { |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2055 | if (netif_msg_hw(priv)) |
| 2056 | pr_debug("%s: stop transmitted packets\n", __func__); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2057 | netif_stop_queue(dev); |
| 2058 | } |
| 2059 | |
| 2060 | dev->stats.tx_bytes += skb->len; |
| 2061 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 2062 | if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && |
| 2063 | priv->hwts_tx_en)) { |
| 2064 | /* declare that device is doing timestamping */ |
| 2065 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
| 2066 | priv->hw->desc->enable_tx_timestamp(first); |
| 2067 | } |
| 2068 | |
| 2069 | if (!priv->hwts_tx_en) |
| 2070 | skb_tx_timestamp(skb); |
Richard Cochran | 3e82ce1 | 2011-06-12 02:19:06 +0000 | [diff] [blame] | 2071 | |
Beniamino Galvani | 3897957 | 2015-01-21 19:07:27 +0100 | [diff] [blame] | 2072 | netdev_sent_queue(dev, skb->len); |
Richard Cochran | 52f64fa | 2011-06-19 03:31:43 +0000 | [diff] [blame] | 2073 | priv->hw->dma->enable_dma_transmission(priv->ioaddr); |
| 2074 | |
Giuseppe CAVALLARO | a9097a9 | 2011-10-18 00:01:19 +0000 | [diff] [blame] | 2075 | spin_unlock(&priv->tx_lock); |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 2076 | return NETDEV_TX_OK; |
Giuseppe CAVALLARO | a9097a9 | 2011-10-18 00:01:19 +0000 | [diff] [blame] | 2077 | |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 2078 | dma_map_err: |
Fabrice Gasnier | 758a0ab | 2014-11-04 17:08:06 +0100 | [diff] [blame] | 2079 | spin_unlock(&priv->tx_lock); |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 2080 | dev_err(priv->device, "Tx dma map failed\n"); |
| 2081 | dev_kfree_skb(skb); |
| 2082 | priv->dev->stats.tx_dropped++; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2083 | return NETDEV_TX_OK; |
| 2084 | } |
| 2085 | |
Vince Bridgers | b938198 | 2014-01-14 13:42:05 -0600 | [diff] [blame] | 2086 | static void stmmac_rx_vlan(struct net_device *dev, struct sk_buff *skb) |
| 2087 | { |
| 2088 | struct ethhdr *ehdr; |
| 2089 | u16 vlanid; |
| 2090 | |
| 2091 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) == |
| 2092 | NETIF_F_HW_VLAN_CTAG_RX && |
| 2093 | !__vlan_get_tag(skb, &vlanid)) { |
| 2094 | /* pop the vlan tag */ |
| 2095 | ehdr = (struct ethhdr *)skb->data; |
| 2096 | memmove(skb->data + VLAN_HLEN, ehdr, ETH_ALEN * 2); |
| 2097 | skb_pull(skb, VLAN_HLEN); |
| 2098 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlanid); |
| 2099 | } |
| 2100 | } |
| 2101 | |
| 2102 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2103 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 2104 | * stmmac_rx_refill - refill used skb preallocated buffers |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2105 | * @priv: driver private structure |
| 2106 | * Description : this is to reallocate the skb for the reception process |
| 2107 | * that is based on zero-copy. |
| 2108 | */ |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2109 | static inline void stmmac_rx_refill(struct stmmac_priv *priv) |
| 2110 | { |
| 2111 | unsigned int rxsize = priv->dma_rx_size; |
| 2112 | int bfsize = priv->dma_buf_sz; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2113 | |
| 2114 | for (; priv->cur_rx - priv->dirty_rx > 0; priv->dirty_rx++) { |
| 2115 | unsigned int entry = priv->dirty_rx % rxsize; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2116 | struct dma_desc *p; |
| 2117 | |
| 2118 | if (priv->extend_desc) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2119 | p = (struct dma_desc *)(priv->dma_erx + entry); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2120 | else |
| 2121 | p = priv->dma_rx + entry; |
| 2122 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2123 | if (likely(priv->rx_skbuff[entry] == NULL)) { |
| 2124 | struct sk_buff *skb; |
| 2125 | |
Eric Dumazet | acb600d | 2012-10-05 06:23:55 +0000 | [diff] [blame] | 2126 | skb = netdev_alloc_skb_ip_align(priv->dev, bfsize); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2127 | |
| 2128 | if (unlikely(skb == NULL)) |
| 2129 | break; |
| 2130 | |
| 2131 | priv->rx_skbuff[entry] = skb; |
| 2132 | priv->rx_skbuff_dma[entry] = |
| 2133 | dma_map_single(priv->device, skb->data, bfsize, |
| 2134 | DMA_FROM_DEVICE); |
Giuseppe CAVALLARO | 362b37b | 2014-08-27 11:27:00 +0200 | [diff] [blame] | 2135 | if (dma_mapping_error(priv->device, |
| 2136 | priv->rx_skbuff_dma[entry])) { |
| 2137 | dev_err(priv->device, "Rx dma map failed\n"); |
| 2138 | dev_kfree_skb(skb); |
| 2139 | break; |
| 2140 | } |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2141 | p->des2 = priv->rx_skbuff_dma[entry]; |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 2142 | |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 2143 | priv->hw->mode->refill_desc3(priv, p); |
Giuseppe CAVALLARO | 286a837 | 2011-10-18 00:01:24 +0000 | [diff] [blame] | 2144 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2145 | if (netif_msg_rx_status(priv)) |
| 2146 | pr_debug("\trefill entry #%d\n", entry); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2147 | } |
Shiraz Hashim | eb0dc4b | 2011-07-17 20:54:08 +0000 | [diff] [blame] | 2148 | wmb(); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2149 | priv->hw->desc->set_rx_owner(p); |
Deepak Sikri | 8e83989 | 2012-07-08 21:14:45 +0000 | [diff] [blame] | 2150 | wmb(); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2151 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2152 | } |
| 2153 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2154 | /** |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 2155 | * stmmac_rx - manage the receive process |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2156 | * @priv: driver private structure |
| 2157 | * @limit: napi bugget. |
| 2158 | * Description : this the function called by the napi poll method. |
| 2159 | * It gets all the frames inside the ring. |
| 2160 | */ |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2161 | static int stmmac_rx(struct stmmac_priv *priv, int limit) |
| 2162 | { |
| 2163 | unsigned int rxsize = priv->dma_rx_size; |
| 2164 | unsigned int entry = priv->cur_rx % rxsize; |
| 2165 | unsigned int next_entry; |
| 2166 | unsigned int count = 0; |
Giuseppe CAVALLARO | d2afb5b | 2014-09-01 09:17:52 +0200 | [diff] [blame] | 2167 | int coe = priv->hw->rx_csum; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2168 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2169 | if (netif_msg_rx_status(priv)) { |
| 2170 | pr_debug("%s: descriptor ring:\n", __func__); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2171 | if (priv->extend_desc) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2172 | stmmac_display_ring((void *)priv->dma_erx, rxsize, 1); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2173 | else |
| 2174 | stmmac_display_ring((void *)priv->dma_rx, rxsize, 0); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2175 | } |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2176 | while (count < limit) { |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2177 | int status; |
Giuseppe CAVALLARO | 9401bb5 | 2013-04-08 02:10:03 +0000 | [diff] [blame] | 2178 | struct dma_desc *p; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2179 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2180 | if (priv->extend_desc) |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2181 | p = (struct dma_desc *)(priv->dma_erx + entry); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2182 | else |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2183 | p = priv->dma_rx + entry; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2184 | |
| 2185 | if (priv->hw->desc->get_rx_owner(p)) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2186 | break; |
| 2187 | |
| 2188 | count++; |
| 2189 | |
| 2190 | next_entry = (++priv->cur_rx) % rxsize; |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2191 | if (priv->extend_desc) |
Giuseppe CAVALLARO | 9401bb5 | 2013-04-08 02:10:03 +0000 | [diff] [blame] | 2192 | prefetch(priv->dma_erx + next_entry); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2193 | else |
Giuseppe CAVALLARO | 9401bb5 | 2013-04-08 02:10:03 +0000 | [diff] [blame] | 2194 | prefetch(priv->dma_rx + next_entry); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2195 | |
| 2196 | /* read the status of the incoming frame */ |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2197 | status = priv->hw->desc->rx_status(&priv->dev->stats, |
| 2198 | &priv->xstats, p); |
| 2199 | if ((priv->extend_desc) && (priv->hw->desc->rx_extended_status)) |
| 2200 | priv->hw->desc->rx_extended_status(&priv->dev->stats, |
| 2201 | &priv->xstats, |
| 2202 | priv->dma_erx + |
| 2203 | entry); |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 2204 | if (unlikely(status == discard_frame)) { |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2205 | priv->dev->stats.rx_errors++; |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 2206 | if (priv->hwts_rx_en && !priv->extend_desc) { |
| 2207 | /* DESC2 & DESC3 will be overwitten by device |
| 2208 | * with timestamp value, hence reinitialize |
| 2209 | * them in stmmac_rx_refill() function so that |
| 2210 | * device can reuse it. |
| 2211 | */ |
| 2212 | priv->rx_skbuff[entry] = NULL; |
| 2213 | dma_unmap_single(priv->device, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2214 | priv->rx_skbuff_dma[entry], |
| 2215 | priv->dma_buf_sz, |
| 2216 | DMA_FROM_DEVICE); |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 2217 | } |
| 2218 | } else { |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2219 | struct sk_buff *skb; |
Giuseppe CAVALLARO | 3eeb299 | 2010-07-27 00:09:47 +0000 | [diff] [blame] | 2220 | int frame_len; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2221 | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2222 | frame_len = priv->hw->desc->get_rx_frame_len(p, coe); |
| 2223 | |
Giuseppe CAVALLARO | 3eeb299 | 2010-07-27 00:09:47 +0000 | [diff] [blame] | 2224 | /* ACS is set; GMAC core strips PAD/FCS for IEEE 802.3 |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2225 | * Type frames (LLC/LLC-SNAP) |
| 2226 | */ |
Giuseppe CAVALLARO | 3eeb299 | 2010-07-27 00:09:47 +0000 | [diff] [blame] | 2227 | if (unlikely(status != llc_snap)) |
| 2228 | frame_len -= ETH_FCS_LEN; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2229 | |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2230 | if (netif_msg_rx_status(priv)) { |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2231 | pr_debug("\tdesc: %p [entry %d] buff=0x%x\n", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2232 | p, entry, p->des2); |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2233 | if (frame_len > ETH_FRAME_LEN) |
| 2234 | pr_debug("\tframe size %d, COE: %d\n", |
| 2235 | frame_len, status); |
| 2236 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2237 | skb = priv->rx_skbuff[entry]; |
| 2238 | if (unlikely(!skb)) { |
| 2239 | pr_err("%s: Inconsistent Rx descriptor chain\n", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2240 | priv->dev->name); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2241 | priv->dev->stats.rx_dropped++; |
| 2242 | break; |
| 2243 | } |
| 2244 | prefetch(skb->data - NET_IP_ALIGN); |
| 2245 | priv->rx_skbuff[entry] = NULL; |
| 2246 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 2247 | stmmac_get_rx_hwtstamp(priv, entry, skb); |
| 2248 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2249 | skb_put(skb, frame_len); |
| 2250 | dma_unmap_single(priv->device, |
| 2251 | priv->rx_skbuff_dma[entry], |
| 2252 | priv->dma_buf_sz, DMA_FROM_DEVICE); |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2253 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2254 | if (netif_msg_pktdata(priv)) { |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2255 | pr_debug("frame received (%dbytes)", frame_len); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2256 | print_pkt(skb->data, frame_len); |
| 2257 | } |
Giuseppe CAVALLARO | 83d7af6 | 2013-07-02 14:12:36 +0200 | [diff] [blame] | 2258 | |
Vince Bridgers | b938198 | 2014-01-14 13:42:05 -0600 | [diff] [blame] | 2259 | stmmac_rx_vlan(priv->dev, skb); |
| 2260 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2261 | skb->protocol = eth_type_trans(skb, priv->dev); |
| 2262 | |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2263 | if (unlikely(!coe)) |
Eric Dumazet | bc8acf2 | 2010-09-02 13:07:41 -0700 | [diff] [blame] | 2264 | skb_checksum_none_assert(skb); |
Giuseppe CAVALLARO | 62a2ab9 | 2012-11-25 23:10:43 +0000 | [diff] [blame] | 2265 | else |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2266 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
Giuseppe CAVALLARO | 62a2ab9 | 2012-11-25 23:10:43 +0000 | [diff] [blame] | 2267 | |
| 2268 | napi_gro_receive(&priv->napi, skb); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2269 | |
| 2270 | priv->dev->stats.rx_packets++; |
| 2271 | priv->dev->stats.rx_bytes += frame_len; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2272 | } |
| 2273 | entry = next_entry; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2274 | } |
| 2275 | |
| 2276 | stmmac_rx_refill(priv); |
| 2277 | |
| 2278 | priv->xstats.rx_pkt_n += count; |
| 2279 | |
| 2280 | return count; |
| 2281 | } |
| 2282 | |
| 2283 | /** |
| 2284 | * stmmac_poll - stmmac poll method (NAPI) |
| 2285 | * @napi : pointer to the napi structure. |
| 2286 | * @budget : maximum number of packets that the current CPU can receive from |
| 2287 | * all interfaces. |
| 2288 | * Description : |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 2289 | * To look at the incoming frames and clear the tx resources. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2290 | */ |
| 2291 | static int stmmac_poll(struct napi_struct *napi, int budget) |
| 2292 | { |
| 2293 | struct stmmac_priv *priv = container_of(napi, struct stmmac_priv, napi); |
| 2294 | int work_done = 0; |
| 2295 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 2296 | priv->xstats.napi_poll++; |
| 2297 | stmmac_tx_clean(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2298 | |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 2299 | work_done = stmmac_rx(priv, budget); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2300 | if (work_done < budget) { |
| 2301 | napi_complete(napi); |
Giuseppe CAVALLARO | 9125cdd | 2012-11-25 23:10:42 +0000 | [diff] [blame] | 2302 | stmmac_enable_dma_irq(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2303 | } |
| 2304 | return work_done; |
| 2305 | } |
| 2306 | |
| 2307 | /** |
| 2308 | * stmmac_tx_timeout |
| 2309 | * @dev : Pointer to net device structure |
| 2310 | * Description: this function is called when a packet transmission fails to |
Giuseppe CAVALLARO | 7284a3f | 2012-11-25 23:10:41 +0000 | [diff] [blame] | 2311 | * complete within a reasonable time. The driver will mark the error in the |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2312 | * netdev structure and arrange for the device to be reset to a sane state |
| 2313 | * in order to transmit a new packet. |
| 2314 | */ |
| 2315 | static void stmmac_tx_timeout(struct net_device *dev) |
| 2316 | { |
| 2317 | struct stmmac_priv *priv = netdev_priv(dev); |
| 2318 | |
| 2319 | /* Clear Tx resources and restart transmitting again */ |
| 2320 | stmmac_tx_err(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2321 | } |
| 2322 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2323 | /** |
Jiri Pirko | 0178934 | 2011-08-16 06:29:00 +0000 | [diff] [blame] | 2324 | * stmmac_set_rx_mode - entry point for multicast addressing |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2325 | * @dev : pointer to the device structure |
| 2326 | * Description: |
| 2327 | * This function is a driver entry point which gets called by the kernel |
| 2328 | * whenever multicast addresses must be enabled/disabled. |
| 2329 | * Return value: |
| 2330 | * void. |
| 2331 | */ |
Jiri Pirko | 0178934 | 2011-08-16 06:29:00 +0000 | [diff] [blame] | 2332 | static void stmmac_set_rx_mode(struct net_device *dev) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2333 | { |
| 2334 | struct stmmac_priv *priv = netdev_priv(dev); |
| 2335 | |
Vince Bridgers | 3b57de9 | 2014-07-31 15:49:17 -0500 | [diff] [blame] | 2336 | priv->hw->mac->set_filter(priv->hw, dev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2337 | } |
| 2338 | |
| 2339 | /** |
| 2340 | * stmmac_change_mtu - entry point to change MTU size for the device. |
| 2341 | * @dev : device pointer. |
| 2342 | * @new_mtu : the new MTU size for the device. |
| 2343 | * Description: the Maximum Transfer Unit (MTU) is used by the network layer |
| 2344 | * to drive packet transmission. Ethernet has an MTU of 1500 octets |
| 2345 | * (ETH_DATA_LEN). This value can be changed with ifconfig. |
| 2346 | * Return value: |
| 2347 | * 0 on success and an appropriate (-)ve integer as defined in errno.h |
| 2348 | * file on failure. |
| 2349 | */ |
| 2350 | static int stmmac_change_mtu(struct net_device *dev, int new_mtu) |
| 2351 | { |
| 2352 | struct stmmac_priv *priv = netdev_priv(dev); |
| 2353 | int max_mtu; |
| 2354 | |
| 2355 | if (netif_running(dev)) { |
| 2356 | pr_err("%s: must be stopped to change its MTU\n", dev->name); |
| 2357 | return -EBUSY; |
| 2358 | } |
| 2359 | |
Giuseppe CAVALLARO | 48febf7 | 2011-10-18 00:01:21 +0000 | [diff] [blame] | 2360 | if (priv->plat->enh_desc) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2361 | max_mtu = JUMBO_LEN; |
| 2362 | else |
Giuseppe CAVALLARO | 45db81e | 2011-10-18 01:39:55 +0000 | [diff] [blame] | 2363 | max_mtu = SKB_MAX_HEAD(NET_SKB_PAD + NET_IP_ALIGN); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2364 | |
Vince Bridgers | 2618abb | 2014-01-20 05:39:01 -0600 | [diff] [blame] | 2365 | if (priv->plat->maxmtu < max_mtu) |
| 2366 | max_mtu = priv->plat->maxmtu; |
| 2367 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2368 | if ((new_mtu < 46) || (new_mtu > max_mtu)) { |
| 2369 | pr_err("%s: invalid MTU, max MTU is: %d\n", dev->name, max_mtu); |
| 2370 | return -EINVAL; |
| 2371 | } |
| 2372 | |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 2373 | dev->mtu = new_mtu; |
| 2374 | netdev_update_features(dev); |
| 2375 | |
| 2376 | return 0; |
| 2377 | } |
| 2378 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 2379 | static netdev_features_t stmmac_fix_features(struct net_device *dev, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2380 | netdev_features_t features) |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 2381 | { |
| 2382 | struct stmmac_priv *priv = netdev_priv(dev); |
| 2383 | |
Deepak SIKRI | 38912bd | 2012-04-04 04:33:21 +0000 | [diff] [blame] | 2384 | if (priv->plat->rx_coe == STMMAC_RX_COE_NONE) |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 2385 | features &= ~NETIF_F_RXCSUM; |
Giuseppe CAVALLARO | d2afb5b | 2014-09-01 09:17:52 +0200 | [diff] [blame] | 2386 | |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 2387 | if (!priv->plat->tx_coe) |
| 2388 | features &= ~NETIF_F_ALL_CSUM; |
| 2389 | |
Giuseppe CAVALLARO | ebbb293 | 2010-09-17 03:23:40 +0000 | [diff] [blame] | 2390 | /* Some GMAC devices have a bugged Jumbo frame support that |
| 2391 | * needs to have the Tx COE disabled for oversized frames |
| 2392 | * (due to limited buffer sizes). In this case we disable |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2393 | * the TX csum insertionin the TDES and not use SF. |
| 2394 | */ |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 2395 | if (priv->plat->bugged_jumbo && (dev->mtu > ETH_DATA_LEN)) |
| 2396 | features &= ~NETIF_F_ALL_CSUM; |
Giuseppe CAVALLARO | ebbb293 | 2010-09-17 03:23:40 +0000 | [diff] [blame] | 2397 | |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 2398 | return features; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2399 | } |
| 2400 | |
Giuseppe CAVALLARO | d2afb5b | 2014-09-01 09:17:52 +0200 | [diff] [blame] | 2401 | static int stmmac_set_features(struct net_device *netdev, |
| 2402 | netdev_features_t features) |
| 2403 | { |
| 2404 | struct stmmac_priv *priv = netdev_priv(netdev); |
| 2405 | |
| 2406 | /* Keep the COE Type in case of csum is supporting */ |
| 2407 | if (features & NETIF_F_RXCSUM) |
| 2408 | priv->hw->rx_csum = priv->plat->rx_coe; |
| 2409 | else |
| 2410 | priv->hw->rx_csum = 0; |
| 2411 | /* No check needed because rx_coe has been set before and it will be |
| 2412 | * fixed in case of issue. |
| 2413 | */ |
| 2414 | priv->hw->mac->rx_ipc(priv->hw); |
| 2415 | |
| 2416 | return 0; |
| 2417 | } |
| 2418 | |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2419 | /** |
| 2420 | * stmmac_interrupt - main ISR |
| 2421 | * @irq: interrupt number. |
| 2422 | * @dev_id: to pass the net device pointer. |
| 2423 | * Description: this is the main driver interrupt service routine. |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 2424 | * It can call: |
| 2425 | * o DMA service routine (to manage incoming frame reception and transmission |
| 2426 | * status) |
| 2427 | * o Core interrupts to manage: remote wake-up, management counter, LPI |
| 2428 | * interrupts. |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2429 | */ |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2430 | static irqreturn_t stmmac_interrupt(int irq, void *dev_id) |
| 2431 | { |
| 2432 | struct net_device *dev = (struct net_device *)dev_id; |
| 2433 | struct stmmac_priv *priv = netdev_priv(dev); |
| 2434 | |
Srinivas Kandagatla | 89f7f2c | 2014-01-16 10:53:00 +0000 | [diff] [blame] | 2435 | if (priv->irq_wake) |
| 2436 | pm_wakeup_event(priv->device, 0); |
| 2437 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2438 | if (unlikely(!dev)) { |
| 2439 | pr_err("%s: invalid dev pointer\n", __func__); |
| 2440 | return IRQ_NONE; |
| 2441 | } |
| 2442 | |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 2443 | /* To handle GMAC own interrupts */ |
| 2444 | if (priv->plat->has_gmac) { |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 2445 | int status = priv->hw->mac->host_irq_status(priv->hw, |
Giuseppe CAVALLARO | 0982a0f | 2013-03-26 04:43:07 +0000 | [diff] [blame] | 2446 | &priv->xstats); |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 2447 | if (unlikely(status)) { |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 2448 | /* For LPI we need to save the tx status */ |
Giuseppe CAVALLARO | 0982a0f | 2013-03-26 04:43:07 +0000 | [diff] [blame] | 2449 | if (status & CORE_IRQ_TX_PATH_IN_LPI_MODE) |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 2450 | priv->tx_path_in_lpi_mode = true; |
Giuseppe CAVALLARO | 0982a0f | 2013-03-26 04:43:07 +0000 | [diff] [blame] | 2451 | if (status & CORE_IRQ_TX_PATH_EXIT_LPI_MODE) |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 2452 | priv->tx_path_in_lpi_mode = false; |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 2453 | } |
| 2454 | } |
| 2455 | |
| 2456 | /* To handle DMA interrupts */ |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 2457 | stmmac_dma_interrupt(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2458 | |
| 2459 | return IRQ_HANDLED; |
| 2460 | } |
| 2461 | |
| 2462 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2463 | /* Polling receive - used by NETCONSOLE and other diagnostic tools |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2464 | * to allow network I/O with interrupts disabled. |
| 2465 | */ |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2466 | static void stmmac_poll_controller(struct net_device *dev) |
| 2467 | { |
| 2468 | disable_irq(dev->irq); |
| 2469 | stmmac_interrupt(dev->irq, dev); |
| 2470 | enable_irq(dev->irq); |
| 2471 | } |
| 2472 | #endif |
| 2473 | |
| 2474 | /** |
| 2475 | * stmmac_ioctl - Entry point for the Ioctl |
| 2476 | * @dev: Device pointer. |
| 2477 | * @rq: An IOCTL specefic structure, that can contain a pointer to |
| 2478 | * a proprietary structure used to pass information to the driver. |
| 2479 | * @cmd: IOCTL command |
| 2480 | * Description: |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2481 | * Currently it supports the phy_mii_ioctl(...) and HW time stamping. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2482 | */ |
| 2483 | static int stmmac_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
| 2484 | { |
| 2485 | struct stmmac_priv *priv = netdev_priv(dev); |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 2486 | int ret = -EOPNOTSUPP; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2487 | |
| 2488 | if (!netif_running(dev)) |
| 2489 | return -EINVAL; |
| 2490 | |
Rayagond Kokatanur | 891434b | 2013-03-26 04:43:10 +0000 | [diff] [blame] | 2491 | switch (cmd) { |
| 2492 | case SIOCGMIIPHY: |
| 2493 | case SIOCGMIIREG: |
| 2494 | case SIOCSMIIREG: |
| 2495 | if (!priv->phydev) |
| 2496 | return -EINVAL; |
| 2497 | ret = phy_mii_ioctl(priv->phydev, rq, cmd); |
| 2498 | break; |
| 2499 | case SIOCSHWTSTAMP: |
| 2500 | ret = stmmac_hwtstamp_ioctl(dev, rq); |
| 2501 | break; |
| 2502 | default: |
| 2503 | break; |
| 2504 | } |
Richard Cochran | 28b0411 | 2010-07-17 08:48:55 +0000 | [diff] [blame] | 2505 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2506 | return ret; |
| 2507 | } |
| 2508 | |
Giuseppe CAVALLARO | 50fb4f74 | 2014-11-04 15:49:33 +0100 | [diff] [blame] | 2509 | #ifdef CONFIG_DEBUG_FS |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2510 | static struct dentry *stmmac_fs_dir; |
| 2511 | static struct dentry *stmmac_rings_status; |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 2512 | static struct dentry *stmmac_dma_cap; |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2513 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2514 | static void sysfs_display_ring(void *head, int size, int extend_desc, |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2515 | struct seq_file *seq) |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2516 | { |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2517 | int i; |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2518 | struct dma_extended_desc *ep = (struct dma_extended_desc *)head; |
| 2519 | struct dma_desc *p = (struct dma_desc *)head; |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2520 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2521 | for (i = 0; i < size; i++) { |
| 2522 | u64 x; |
| 2523 | if (extend_desc) { |
| 2524 | x = *(u64 *) ep; |
| 2525 | seq_printf(seq, "%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2526 | i, (unsigned int)virt_to_phys(ep), |
| 2527 | (unsigned int)x, (unsigned int)(x >> 32), |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2528 | ep->basic.des2, ep->basic.des3); |
| 2529 | ep++; |
| 2530 | } else { |
| 2531 | x = *(u64 *) p; |
| 2532 | seq_printf(seq, "%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2533 | i, (unsigned int)virt_to_phys(ep), |
| 2534 | (unsigned int)x, (unsigned int)(x >> 32), |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2535 | p->des2, p->des3); |
| 2536 | p++; |
| 2537 | } |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2538 | seq_printf(seq, "\n"); |
| 2539 | } |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2540 | } |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2541 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2542 | static int stmmac_sysfs_ring_read(struct seq_file *seq, void *v) |
| 2543 | { |
| 2544 | struct net_device *dev = seq->private; |
| 2545 | struct stmmac_priv *priv = netdev_priv(dev); |
| 2546 | unsigned int txsize = priv->dma_tx_size; |
| 2547 | unsigned int rxsize = priv->dma_rx_size; |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2548 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2549 | if (priv->extend_desc) { |
| 2550 | seq_printf(seq, "Extended RX descriptor ring:\n"); |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2551 | sysfs_display_ring((void *)priv->dma_erx, rxsize, 1, seq); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2552 | seq_printf(seq, "Extended TX descriptor ring:\n"); |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2553 | sysfs_display_ring((void *)priv->dma_etx, txsize, 1, seq); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2554 | } else { |
| 2555 | seq_printf(seq, "RX descriptor ring:\n"); |
| 2556 | sysfs_display_ring((void *)priv->dma_rx, rxsize, 0, seq); |
| 2557 | seq_printf(seq, "TX descriptor ring:\n"); |
| 2558 | sysfs_display_ring((void *)priv->dma_tx, txsize, 0, seq); |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2559 | } |
| 2560 | |
| 2561 | return 0; |
| 2562 | } |
| 2563 | |
| 2564 | static int stmmac_sysfs_ring_open(struct inode *inode, struct file *file) |
| 2565 | { |
| 2566 | return single_open(file, stmmac_sysfs_ring_read, inode->i_private); |
| 2567 | } |
| 2568 | |
| 2569 | static const struct file_operations stmmac_rings_status_fops = { |
| 2570 | .owner = THIS_MODULE, |
| 2571 | .open = stmmac_sysfs_ring_open, |
| 2572 | .read = seq_read, |
| 2573 | .llseek = seq_lseek, |
Djalal Harouni | 7486394 | 2012-05-20 13:55:30 +0000 | [diff] [blame] | 2574 | .release = single_release, |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2575 | }; |
| 2576 | |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 2577 | static int stmmac_sysfs_dma_cap_read(struct seq_file *seq, void *v) |
| 2578 | { |
| 2579 | struct net_device *dev = seq->private; |
| 2580 | struct stmmac_priv *priv = netdev_priv(dev); |
| 2581 | |
Giuseppe CAVALLARO | 19e30c1 | 2011-11-16 21:58:00 +0000 | [diff] [blame] | 2582 | if (!priv->hw_cap_support) { |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 2583 | seq_printf(seq, "DMA HW features not supported\n"); |
| 2584 | return 0; |
| 2585 | } |
| 2586 | |
| 2587 | seq_printf(seq, "==============================\n"); |
| 2588 | seq_printf(seq, "\tDMA HW features\n"); |
| 2589 | seq_printf(seq, "==============================\n"); |
| 2590 | |
| 2591 | seq_printf(seq, "\t10/100 Mbps %s\n", |
| 2592 | (priv->dma_cap.mbps_10_100) ? "Y" : "N"); |
| 2593 | seq_printf(seq, "\t1000 Mbps %s\n", |
| 2594 | (priv->dma_cap.mbps_1000) ? "Y" : "N"); |
| 2595 | seq_printf(seq, "\tHalf duple %s\n", |
| 2596 | (priv->dma_cap.half_duplex) ? "Y" : "N"); |
| 2597 | seq_printf(seq, "\tHash Filter: %s\n", |
| 2598 | (priv->dma_cap.hash_filter) ? "Y" : "N"); |
| 2599 | seq_printf(seq, "\tMultiple MAC address registers: %s\n", |
| 2600 | (priv->dma_cap.multi_addr) ? "Y" : "N"); |
| 2601 | seq_printf(seq, "\tPCS (TBI/SGMII/RTBI PHY interfatces): %s\n", |
| 2602 | (priv->dma_cap.pcs) ? "Y" : "N"); |
| 2603 | seq_printf(seq, "\tSMA (MDIO) Interface: %s\n", |
| 2604 | (priv->dma_cap.sma_mdio) ? "Y" : "N"); |
| 2605 | seq_printf(seq, "\tPMT Remote wake up: %s\n", |
| 2606 | (priv->dma_cap.pmt_remote_wake_up) ? "Y" : "N"); |
| 2607 | seq_printf(seq, "\tPMT Magic Frame: %s\n", |
| 2608 | (priv->dma_cap.pmt_magic_frame) ? "Y" : "N"); |
| 2609 | seq_printf(seq, "\tRMON module: %s\n", |
| 2610 | (priv->dma_cap.rmon) ? "Y" : "N"); |
| 2611 | seq_printf(seq, "\tIEEE 1588-2002 Time Stamp: %s\n", |
| 2612 | (priv->dma_cap.time_stamp) ? "Y" : "N"); |
| 2613 | seq_printf(seq, "\tIEEE 1588-2008 Advanced Time Stamp:%s\n", |
| 2614 | (priv->dma_cap.atime_stamp) ? "Y" : "N"); |
| 2615 | seq_printf(seq, "\t802.3az - Energy-Efficient Ethernet (EEE) %s\n", |
| 2616 | (priv->dma_cap.eee) ? "Y" : "N"); |
| 2617 | seq_printf(seq, "\tAV features: %s\n", (priv->dma_cap.av) ? "Y" : "N"); |
| 2618 | seq_printf(seq, "\tChecksum Offload in TX: %s\n", |
| 2619 | (priv->dma_cap.tx_coe) ? "Y" : "N"); |
| 2620 | seq_printf(seq, "\tIP Checksum Offload (type1) in RX: %s\n", |
| 2621 | (priv->dma_cap.rx_coe_type1) ? "Y" : "N"); |
| 2622 | seq_printf(seq, "\tIP Checksum Offload (type2) in RX: %s\n", |
| 2623 | (priv->dma_cap.rx_coe_type2) ? "Y" : "N"); |
| 2624 | seq_printf(seq, "\tRXFIFO > 2048bytes: %s\n", |
| 2625 | (priv->dma_cap.rxfifo_over_2048) ? "Y" : "N"); |
| 2626 | seq_printf(seq, "\tNumber of Additional RX channel: %d\n", |
| 2627 | priv->dma_cap.number_rx_channel); |
| 2628 | seq_printf(seq, "\tNumber of Additional TX channel: %d\n", |
| 2629 | priv->dma_cap.number_tx_channel); |
| 2630 | seq_printf(seq, "\tEnhanced descriptors: %s\n", |
| 2631 | (priv->dma_cap.enh_desc) ? "Y" : "N"); |
| 2632 | |
| 2633 | return 0; |
| 2634 | } |
| 2635 | |
| 2636 | static int stmmac_sysfs_dma_cap_open(struct inode *inode, struct file *file) |
| 2637 | { |
| 2638 | return single_open(file, stmmac_sysfs_dma_cap_read, inode->i_private); |
| 2639 | } |
| 2640 | |
| 2641 | static const struct file_operations stmmac_dma_cap_fops = { |
| 2642 | .owner = THIS_MODULE, |
| 2643 | .open = stmmac_sysfs_dma_cap_open, |
| 2644 | .read = seq_read, |
| 2645 | .llseek = seq_lseek, |
Djalal Harouni | 7486394 | 2012-05-20 13:55:30 +0000 | [diff] [blame] | 2646 | .release = single_release, |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 2647 | }; |
| 2648 | |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2649 | static int stmmac_init_fs(struct net_device *dev) |
| 2650 | { |
| 2651 | /* Create debugfs entries */ |
| 2652 | stmmac_fs_dir = debugfs_create_dir(STMMAC_RESOURCE_NAME, NULL); |
| 2653 | |
| 2654 | if (!stmmac_fs_dir || IS_ERR(stmmac_fs_dir)) { |
| 2655 | pr_err("ERROR %s, debugfs create directory failed\n", |
| 2656 | STMMAC_RESOURCE_NAME); |
| 2657 | |
| 2658 | return -ENOMEM; |
| 2659 | } |
| 2660 | |
| 2661 | /* Entry to report DMA RX/TX rings */ |
| 2662 | stmmac_rings_status = debugfs_create_file("descriptors_status", |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2663 | S_IRUGO, stmmac_fs_dir, dev, |
| 2664 | &stmmac_rings_status_fops); |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2665 | |
| 2666 | if (!stmmac_rings_status || IS_ERR(stmmac_rings_status)) { |
| 2667 | pr_info("ERROR creating stmmac ring debugfs file\n"); |
| 2668 | debugfs_remove(stmmac_fs_dir); |
| 2669 | |
| 2670 | return -ENOMEM; |
| 2671 | } |
| 2672 | |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 2673 | /* Entry to report the DMA HW features */ |
| 2674 | stmmac_dma_cap = debugfs_create_file("dma_cap", S_IRUGO, stmmac_fs_dir, |
| 2675 | dev, &stmmac_dma_cap_fops); |
| 2676 | |
| 2677 | if (!stmmac_dma_cap || IS_ERR(stmmac_dma_cap)) { |
| 2678 | pr_info("ERROR creating stmmac MMC debugfs file\n"); |
| 2679 | debugfs_remove(stmmac_rings_status); |
| 2680 | debugfs_remove(stmmac_fs_dir); |
| 2681 | |
| 2682 | return -ENOMEM; |
| 2683 | } |
| 2684 | |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2685 | return 0; |
| 2686 | } |
| 2687 | |
| 2688 | static void stmmac_exit_fs(void) |
| 2689 | { |
| 2690 | debugfs_remove(stmmac_rings_status); |
Giuseppe CAVALLARO | e743482 | 2011-09-01 21:51:41 +0000 | [diff] [blame] | 2691 | debugfs_remove(stmmac_dma_cap); |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2692 | debugfs_remove(stmmac_fs_dir); |
| 2693 | } |
Giuseppe CAVALLARO | 50fb4f74 | 2014-11-04 15:49:33 +0100 | [diff] [blame] | 2694 | #endif /* CONFIG_DEBUG_FS */ |
Giuseppe CAVALLARO | 7ac2905 | 2011-09-01 21:51:39 +0000 | [diff] [blame] | 2695 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2696 | static const struct net_device_ops stmmac_netdev_ops = { |
| 2697 | .ndo_open = stmmac_open, |
| 2698 | .ndo_start_xmit = stmmac_xmit, |
| 2699 | .ndo_stop = stmmac_release, |
| 2700 | .ndo_change_mtu = stmmac_change_mtu, |
Michał Mirosław | 5e982f3 | 2011-04-09 02:46:55 +0000 | [diff] [blame] | 2701 | .ndo_fix_features = stmmac_fix_features, |
Giuseppe CAVALLARO | d2afb5b | 2014-09-01 09:17:52 +0200 | [diff] [blame] | 2702 | .ndo_set_features = stmmac_set_features, |
Jiri Pirko | 0178934 | 2011-08-16 06:29:00 +0000 | [diff] [blame] | 2703 | .ndo_set_rx_mode = stmmac_set_rx_mode, |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2704 | .ndo_tx_timeout = stmmac_tx_timeout, |
| 2705 | .ndo_do_ioctl = stmmac_ioctl, |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2706 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 2707 | .ndo_poll_controller = stmmac_poll_controller, |
| 2708 | #endif |
| 2709 | .ndo_set_mac_address = eth_mac_addr, |
| 2710 | }; |
| 2711 | |
| 2712 | /** |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2713 | * stmmac_hw_init - Init the MAC device |
Giuseppe CAVALLARO | 32ceabc | 2013-04-08 02:10:00 +0000 | [diff] [blame] | 2714 | * @priv: driver private structure |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 2715 | * Description: this function is to configure the MAC device according to |
| 2716 | * some platform parameters or the HW capability register. It prepares the |
| 2717 | * driver to use either ring or chain modes and to setup either enhanced or |
| 2718 | * normal descriptors. |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2719 | */ |
| 2720 | static int stmmac_hw_init(struct stmmac_priv *priv) |
| 2721 | { |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2722 | struct mac_device_info *mac; |
| 2723 | |
| 2724 | /* Identify the MAC HW device */ |
Marc Kleine-Budde | 03f2eec | 2012-04-03 22:13:01 +0000 | [diff] [blame] | 2725 | if (priv->plat->has_gmac) { |
| 2726 | priv->dev->priv_flags |= IFF_UNICAST_FLT; |
Vince Bridgers | 3b57de9 | 2014-07-31 15:49:17 -0500 | [diff] [blame] | 2727 | mac = dwmac1000_setup(priv->ioaddr, |
| 2728 | priv->plat->multicast_filter_bins, |
| 2729 | priv->plat->unicast_filter_entries); |
Marc Kleine-Budde | 03f2eec | 2012-04-03 22:13:01 +0000 | [diff] [blame] | 2730 | } else { |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2731 | mac = dwmac100_setup(priv->ioaddr); |
Marc Kleine-Budde | 03f2eec | 2012-04-03 22:13:01 +0000 | [diff] [blame] | 2732 | } |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2733 | if (!mac) |
| 2734 | return -ENOMEM; |
| 2735 | |
| 2736 | priv->hw = mac; |
| 2737 | |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2738 | /* Get and dump the chip ID */ |
Giuseppe CAVALLARO | cffb13f | 2012-05-13 22:18:41 +0000 | [diff] [blame] | 2739 | priv->synopsys_id = stmmac_get_synopsys_id(priv); |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2740 | |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 2741 | /* To use the chained or ring mode */ |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2742 | if (chain_mode) { |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 2743 | priv->hw->mode = &chain_mode_ops; |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 2744 | pr_info(" Chain mode enabled\n"); |
| 2745 | priv->mode = STMMAC_CHAIN_MODE; |
| 2746 | } else { |
Giuseppe CAVALLARO | 29896a6 | 2014-03-10 13:40:33 +0100 | [diff] [blame] | 2747 | priv->hw->mode = &ring_mode_ops; |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 2748 | pr_info(" Ring mode enabled\n"); |
| 2749 | priv->mode = STMMAC_RING_MODE; |
| 2750 | } |
| 2751 | |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2752 | /* Get the HW capability (new GMAC newer than 3.50a) */ |
| 2753 | priv->hw_cap_support = stmmac_get_hw_features(priv); |
| 2754 | if (priv->hw_cap_support) { |
| 2755 | pr_info(" DMA HW capability register supported"); |
| 2756 | |
| 2757 | /* We can override some gmac/dma configuration fields: e.g. |
| 2758 | * enh_desc, tx_coe (e.g. that are passed through the |
| 2759 | * platform) with the values from the HW capability |
| 2760 | * register (if supported). |
| 2761 | */ |
| 2762 | priv->plat->enh_desc = priv->dma_cap.enh_desc; |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2763 | priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up; |
Deepak SIKRI | 38912bd | 2012-04-04 04:33:21 +0000 | [diff] [blame] | 2764 | |
Sonic Zhang | dec2165 | 2015-01-22 14:55:57 +0800 | [diff] [blame] | 2765 | /* TXCOE doesn't work in thresh DMA mode */ |
| 2766 | if (priv->plat->force_thresh_dma_mode) |
| 2767 | priv->plat->tx_coe = 0; |
| 2768 | else |
| 2769 | priv->plat->tx_coe = priv->dma_cap.tx_coe; |
Deepak SIKRI | 38912bd | 2012-04-04 04:33:21 +0000 | [diff] [blame] | 2770 | |
| 2771 | if (priv->dma_cap.rx_coe_type2) |
| 2772 | priv->plat->rx_coe = STMMAC_RX_COE_TYPE2; |
| 2773 | else if (priv->dma_cap.rx_coe_type1) |
| 2774 | priv->plat->rx_coe = STMMAC_RX_COE_TYPE1; |
| 2775 | |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2776 | } else |
| 2777 | pr_info(" No HW DMA feature register supported"); |
| 2778 | |
Byungho An | 61369d0 | 2013-06-28 16:35:32 +0900 | [diff] [blame] | 2779 | /* To use alternate (extended) or normal descriptor structures */ |
| 2780 | stmmac_selec_desc_mode(priv); |
| 2781 | |
Giuseppe CAVALLARO | d2afb5b | 2014-09-01 09:17:52 +0200 | [diff] [blame] | 2782 | if (priv->plat->rx_coe) { |
| 2783 | priv->hw->rx_csum = priv->plat->rx_coe; |
Deepak SIKRI | 38912bd | 2012-04-04 04:33:21 +0000 | [diff] [blame] | 2784 | pr_info(" RX Checksum Offload Engine supported (type %d)\n", |
| 2785 | priv->plat->rx_coe); |
Giuseppe CAVALLARO | d2afb5b | 2014-09-01 09:17:52 +0200 | [diff] [blame] | 2786 | } |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2787 | if (priv->plat->tx_coe) |
| 2788 | pr_info(" TX Checksum insertion supported\n"); |
| 2789 | |
| 2790 | if (priv->plat->pmt) { |
| 2791 | pr_info(" Wake-Up On Lan supported\n"); |
| 2792 | device_set_wakeup_capable(priv->device, 1); |
| 2793 | } |
| 2794 | |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2795 | return 0; |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2796 | } |
| 2797 | |
| 2798 | /** |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2799 | * stmmac_dvr_probe |
| 2800 | * @device: device pointer |
Giuseppe CAVALLARO | ff3dd78 | 2012-06-04 19:22:55 +0000 | [diff] [blame] | 2801 | * @plat_dat: platform data pointer |
| 2802 | * @addr: iobase memory address |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2803 | * Description: this is the main probe function used to |
| 2804 | * call the alloc_etherdev, allocate the priv structure. |
Andy Shevchenko | 9afec6e | 2015-01-27 18:38:03 +0200 | [diff] [blame] | 2805 | * Return: |
| 2806 | * on success the new private structure is returned, otherwise the error |
| 2807 | * pointer. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2808 | */ |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2809 | struct stmmac_priv *stmmac_dvr_probe(struct device *device, |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2810 | struct plat_stmmacenet_data *plat_dat, |
| 2811 | void __iomem *addr) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2812 | { |
| 2813 | int ret = 0; |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2814 | struct net_device *ndev = NULL; |
| 2815 | struct stmmac_priv *priv; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2816 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2817 | ndev = alloc_etherdev(sizeof(struct stmmac_priv)); |
Joe Perches | 41de8d4 | 2012-01-29 13:47:52 +0000 | [diff] [blame] | 2818 | if (!ndev) |
Andy Shevchenko | 9afec6e | 2015-01-27 18:38:03 +0200 | [diff] [blame] | 2819 | return ERR_PTR(-ENOMEM); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2820 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2821 | SET_NETDEV_DEV(ndev, device); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2822 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2823 | priv = netdev_priv(ndev); |
| 2824 | priv->device = device; |
| 2825 | priv->dev = ndev; |
| 2826 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2827 | stmmac_set_ethtool_ops(ndev); |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2828 | priv->pause = pause; |
| 2829 | priv->plat = plat_dat; |
| 2830 | priv->ioaddr = addr; |
| 2831 | priv->dev->base_addr = (unsigned long)addr; |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2832 | |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2833 | /* Verify driver arguments */ |
| 2834 | stmmac_verify_args(); |
| 2835 | |
| 2836 | /* Override with kernel parameters if supplied XXX CRS XXX |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 2837 | * this needs to have multiple instances |
| 2838 | */ |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2839 | if ((phyaddr >= 0) && (phyaddr <= 31)) |
| 2840 | priv->plat->phy_addr = phyaddr; |
| 2841 | |
Chen-Yu Tsai | 62866e9 | 2014-01-17 21:24:40 +0800 | [diff] [blame] | 2842 | priv->stmmac_clk = devm_clk_get(priv->device, STMMAC_RESOURCE_NAME); |
| 2843 | if (IS_ERR(priv->stmmac_clk)) { |
| 2844 | dev_warn(priv->device, "%s: warning: cannot get CSR clock\n", |
| 2845 | __func__); |
Kweh, Hock Leong | c5bb86c | 2014-09-26 21:42:55 +0800 | [diff] [blame] | 2846 | /* If failed to obtain stmmac_clk and specific clk_csr value |
| 2847 | * is NOT passed from the platform, probe fail. |
| 2848 | */ |
| 2849 | if (!priv->plat->clk_csr) { |
| 2850 | ret = PTR_ERR(priv->stmmac_clk); |
| 2851 | goto error_clk_get; |
| 2852 | } else { |
| 2853 | priv->stmmac_clk = NULL; |
| 2854 | } |
Chen-Yu Tsai | 62866e9 | 2014-01-17 21:24:40 +0800 | [diff] [blame] | 2855 | } |
| 2856 | clk_prepare_enable(priv->stmmac_clk); |
| 2857 | |
Andrew Bresticker | 5f9755d | 2015-04-07 13:38:45 -0700 | [diff] [blame] | 2858 | priv->pclk = devm_clk_get(priv->device, "pclk"); |
| 2859 | if (IS_ERR(priv->pclk)) { |
| 2860 | if (PTR_ERR(priv->pclk) == -EPROBE_DEFER) { |
| 2861 | ret = -EPROBE_DEFER; |
| 2862 | goto error_pclk_get; |
| 2863 | } |
| 2864 | priv->pclk = NULL; |
| 2865 | } |
| 2866 | clk_prepare_enable(priv->pclk); |
| 2867 | |
Chen-Yu Tsai | c5e4ddb | 2014-01-17 21:24:41 +0800 | [diff] [blame] | 2868 | priv->stmmac_rst = devm_reset_control_get(priv->device, |
| 2869 | STMMAC_RESOURCE_NAME); |
| 2870 | if (IS_ERR(priv->stmmac_rst)) { |
| 2871 | if (PTR_ERR(priv->stmmac_rst) == -EPROBE_DEFER) { |
| 2872 | ret = -EPROBE_DEFER; |
| 2873 | goto error_hw_init; |
| 2874 | } |
| 2875 | dev_info(priv->device, "no reset control found\n"); |
| 2876 | priv->stmmac_rst = NULL; |
| 2877 | } |
| 2878 | if (priv->stmmac_rst) |
| 2879 | reset_control_deassert(priv->stmmac_rst); |
| 2880 | |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2881 | /* Init MAC and get the capabilities */ |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 2882 | ret = stmmac_hw_init(priv); |
| 2883 | if (ret) |
Chen-Yu Tsai | 62866e9 | 2014-01-17 21:24:40 +0800 | [diff] [blame] | 2884 | goto error_hw_init; |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2885 | |
| 2886 | ndev->netdev_ops = &stmmac_netdev_ops; |
| 2887 | |
| 2888 | ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
| 2889 | NETIF_F_RXCSUM; |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2890 | ndev->features |= ndev->hw_features | NETIF_F_HIGHDMA; |
| 2891 | ndev->watchdog_timeo = msecs_to_jiffies(watchdog); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2892 | #ifdef STMMAC_VLAN_TAG_USED |
| 2893 | /* Both mac100 and gmac support receive VLAN tag detection */ |
Patrick McHardy | f646968 | 2013-04-19 02:04:27 +0000 | [diff] [blame] | 2894 | ndev->features |= NETIF_F_HW_VLAN_CTAG_RX; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2895 | #endif |
| 2896 | priv->msg_enable = netif_msg_init(debug, default_msg_level); |
| 2897 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2898 | if (flow_ctrl) |
| 2899 | priv->flow_ctrl = FLOW_AUTO; /* RX/TX pause on */ |
| 2900 | |
Giuseppe CAVALLARO | 62a2ab9 | 2012-11-25 23:10:43 +0000 | [diff] [blame] | 2901 | /* Rx Watchdog is available in the COREs newer than the 3.40. |
| 2902 | * In some case, for example on bugged HW this feature |
| 2903 | * has to be disable and this can be done by passing the |
| 2904 | * riwt_off field from the platform. |
| 2905 | */ |
| 2906 | if ((priv->synopsys_id >= DWMAC_CORE_3_50) && (!priv->plat->riwt_off)) { |
| 2907 | priv->use_riwt = 1; |
| 2908 | pr_info(" Enable RX Mitigation via HW Watchdog Timer\n"); |
| 2909 | } |
| 2910 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2911 | netif_napi_add(ndev, &priv->napi, stmmac_poll, 64); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2912 | |
Vlad Lungu | f8e9616 | 2010-11-29 22:52:52 +0000 | [diff] [blame] | 2913 | spin_lock_init(&priv->lock); |
Giuseppe CAVALLARO | a9097a9 | 2011-10-18 00:01:19 +0000 | [diff] [blame] | 2914 | spin_lock_init(&priv->tx_lock); |
Vlad Lungu | f8e9616 | 2010-11-29 22:52:52 +0000 | [diff] [blame] | 2915 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2916 | ret = register_netdev(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2917 | if (ret) { |
Giuseppe CAVALLARO | cf3f047 | 2012-02-15 00:10:39 +0000 | [diff] [blame] | 2918 | pr_err("%s: ERROR %i registering the device\n", __func__, ret); |
Viresh Kumar | 6a81c26 | 2012-07-30 14:39:41 -0700 | [diff] [blame] | 2919 | goto error_netdev_register; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2920 | } |
| 2921 | |
Giuseppe CAVALLARO | cd7201f | 2012-04-04 04:33:27 +0000 | [diff] [blame] | 2922 | /* If a specific clk_csr value is passed from the platform |
| 2923 | * this means that the CSR Clock Range selection cannot be |
| 2924 | * changed at run-time and it is fixed. Viceversa the driver'll try to |
| 2925 | * set the MDC clock dynamically according to the csr actual |
| 2926 | * clock input. |
| 2927 | */ |
| 2928 | if (!priv->plat->clk_csr) |
| 2929 | stmmac_clk_csr_set(priv); |
| 2930 | else |
| 2931 | priv->clk_csr = priv->plat->clk_csr; |
| 2932 | |
Giuseppe CAVALLARO | e58bb43 | 2013-03-26 04:43:08 +0000 | [diff] [blame] | 2933 | stmmac_check_pcs_mode(priv); |
| 2934 | |
Byungho An | 4d8f082 | 2013-04-07 17:56:16 +0000 | [diff] [blame] | 2935 | if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI && |
| 2936 | priv->pcs != STMMAC_PCS_RTBI) { |
Giuseppe CAVALLARO | e58bb43 | 2013-03-26 04:43:08 +0000 | [diff] [blame] | 2937 | /* MDIO bus Registration */ |
| 2938 | ret = stmmac_mdio_register(ndev); |
| 2939 | if (ret < 0) { |
| 2940 | pr_debug("%s: MDIO bus (id: %d) registration failed", |
| 2941 | __func__, priv->plat->bus_id); |
| 2942 | goto error_mdio_register; |
| 2943 | } |
Francesco Virlinzi | 4bfcbd7 | 2012-04-18 19:48:20 +0000 | [diff] [blame] | 2944 | } |
| 2945 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2946 | return priv; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2947 | |
Viresh Kumar | 6a81c26 | 2012-07-30 14:39:41 -0700 | [diff] [blame] | 2948 | error_mdio_register: |
Dan Carpenter | 34a52f3 | 2010-12-20 21:34:56 +0000 | [diff] [blame] | 2949 | unregister_netdev(ndev); |
Viresh Kumar | 6a81c26 | 2012-07-30 14:39:41 -0700 | [diff] [blame] | 2950 | error_netdev_register: |
| 2951 | netif_napi_del(&priv->napi); |
Chen-Yu Tsai | 62866e9 | 2014-01-17 21:24:40 +0800 | [diff] [blame] | 2952 | error_hw_init: |
Andrew Bresticker | 5f9755d | 2015-04-07 13:38:45 -0700 | [diff] [blame] | 2953 | clk_disable_unprepare(priv->pclk); |
| 2954 | error_pclk_get: |
Chen-Yu Tsai | 62866e9 | 2014-01-17 21:24:40 +0800 | [diff] [blame] | 2955 | clk_disable_unprepare(priv->stmmac_clk); |
| 2956 | error_clk_get: |
Dan Carpenter | 34a52f3 | 2010-12-20 21:34:56 +0000 | [diff] [blame] | 2957 | free_netdev(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2958 | |
Chen-Yu Tsai | c5e4ddb | 2014-01-17 21:24:41 +0800 | [diff] [blame] | 2959 | return ERR_PTR(ret); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2960 | } |
Andy Shevchenko | b2e2f0c | 2014-11-10 12:38:59 +0200 | [diff] [blame] | 2961 | EXPORT_SYMBOL_GPL(stmmac_dvr_probe); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2962 | |
| 2963 | /** |
| 2964 | * stmmac_dvr_remove |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2965 | * @ndev: net device pointer |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2966 | * Description: this function resets the TX/RX processes, disables the MAC RX/TX |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2967 | * changes the link status, releases the DMA descriptor rings. |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2968 | */ |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2969 | int stmmac_dvr_remove(struct net_device *ndev) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2970 | { |
Giuseppe CAVALLARO | aec7ff2 | 2010-01-06 23:07:18 +0000 | [diff] [blame] | 2971 | struct stmmac_priv *priv = netdev_priv(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2972 | |
| 2973 | pr_info("%s:\n\tremoving driver", __func__); |
| 2974 | |
Giuseppe CAVALLARO | ad01b7d | 2010-08-23 20:40:42 +0000 | [diff] [blame] | 2975 | priv->hw->dma->stop_rx(priv->ioaddr); |
| 2976 | priv->hw->dma->stop_tx(priv->ioaddr); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2977 | |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 2978 | stmmac_set_mac(priv->ioaddr, false); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2979 | netif_carrier_off(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2980 | unregister_netdev(ndev); |
Chen-Yu Tsai | c5e4ddb | 2014-01-17 21:24:41 +0800 | [diff] [blame] | 2981 | if (priv->stmmac_rst) |
| 2982 | reset_control_assert(priv->stmmac_rst); |
Andrew Bresticker | 5f9755d | 2015-04-07 13:38:45 -0700 | [diff] [blame] | 2983 | clk_disable_unprepare(priv->pclk); |
Chen-Yu Tsai | 62866e9 | 2014-01-17 21:24:40 +0800 | [diff] [blame] | 2984 | clk_disable_unprepare(priv->stmmac_clk); |
Bryan O'Donoghue | e743471 | 2015-04-16 17:56:03 +0100 | [diff] [blame] | 2985 | if (priv->pcs != STMMAC_PCS_RGMII && priv->pcs != STMMAC_PCS_TBI && |
| 2986 | priv->pcs != STMMAC_PCS_RTBI) |
| 2987 | stmmac_mdio_unregister(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2988 | free_netdev(ndev); |
| 2989 | |
| 2990 | return 0; |
| 2991 | } |
Andy Shevchenko | b2e2f0c | 2014-11-10 12:38:59 +0200 | [diff] [blame] | 2992 | EXPORT_SYMBOL_GPL(stmmac_dvr_remove); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 2993 | |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 2994 | /** |
| 2995 | * stmmac_suspend - suspend callback |
| 2996 | * @ndev: net device pointer |
| 2997 | * Description: this is the function to suspend the device and it is called |
| 2998 | * by the platform driver to stop the network queue, release the resources, |
| 2999 | * program the PMT register (for WoL), clean and release driver resources. |
| 3000 | */ |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 3001 | int stmmac_suspend(struct net_device *ndev) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3002 | { |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3003 | struct stmmac_priv *priv = netdev_priv(ndev); |
Giuseppe CAVALLARO | f8c5a87 | 2012-05-13 22:18:43 +0000 | [diff] [blame] | 3004 | unsigned long flags; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3005 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3006 | if (!ndev || !netif_running(ndev)) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3007 | return 0; |
| 3008 | |
Francesco Virlinzi | 102463b | 2011-11-16 21:58:02 +0000 | [diff] [blame] | 3009 | if (priv->phydev) |
| 3010 | phy_stop(priv->phydev); |
| 3011 | |
Giuseppe CAVALLARO | f8c5a87 | 2012-05-13 22:18:43 +0000 | [diff] [blame] | 3012 | spin_lock_irqsave(&priv->lock, flags); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3013 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3014 | netif_device_detach(ndev); |
| 3015 | netif_stop_queue(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3016 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3017 | napi_disable(&priv->napi); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3018 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3019 | /* Stop TX/RX DMA */ |
| 3020 | priv->hw->dma->stop_tx(priv->ioaddr); |
| 3021 | priv->hw->dma->stop_rx(priv->ioaddr); |
Giuseppe CAVALLARO | c24602e | 2013-03-26 04:43:06 +0000 | [diff] [blame] | 3022 | |
| 3023 | stmmac_clear_descriptors(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3024 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3025 | /* Enable Power down mode by programming the PMT regs */ |
Srinivas Kandagatla | 89f7f2c | 2014-01-16 10:53:00 +0000 | [diff] [blame] | 3026 | if (device_may_wakeup(priv->device)) { |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 3027 | priv->hw->mac->pmt(priv->hw, priv->wolopts); |
Srinivas Kandagatla | 89f7f2c | 2014-01-16 10:53:00 +0000 | [diff] [blame] | 3028 | priv->irq_wake = 1; |
| 3029 | } else { |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 3030 | stmmac_set_mac(priv->ioaddr, false); |
Srinivas Kandagatla | db88f10 | 2014-01-16 10:52:52 +0000 | [diff] [blame] | 3031 | pinctrl_pm_select_sleep_state(priv->device); |
Giuseppe CAVALLARO | ba1377ff | 2012-04-04 04:33:25 +0000 | [diff] [blame] | 3032 | /* Disable clock in case of PWM is off */ |
Andrew Bresticker | 5f9755d | 2015-04-07 13:38:45 -0700 | [diff] [blame] | 3033 | clk_disable(priv->pclk); |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 3034 | clk_disable(priv->stmmac_clk); |
Giuseppe CAVALLARO | ba1377ff | 2012-04-04 04:33:25 +0000 | [diff] [blame] | 3035 | } |
Giuseppe CAVALLARO | f8c5a87 | 2012-05-13 22:18:43 +0000 | [diff] [blame] | 3036 | spin_unlock_irqrestore(&priv->lock, flags); |
Vince Bridgers | 2d871aa | 2014-07-28 14:07:58 -0500 | [diff] [blame] | 3037 | |
| 3038 | priv->oldlink = 0; |
| 3039 | priv->speed = 0; |
| 3040 | priv->oldduplex = -1; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3041 | return 0; |
| 3042 | } |
Andy Shevchenko | b2e2f0c | 2014-11-10 12:38:59 +0200 | [diff] [blame] | 3043 | EXPORT_SYMBOL_GPL(stmmac_suspend); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3044 | |
Giuseppe CAVALLARO | 732fdf0 | 2014-11-18 09:47:01 +0100 | [diff] [blame] | 3045 | /** |
| 3046 | * stmmac_resume - resume callback |
| 3047 | * @ndev: net device pointer |
| 3048 | * Description: when resume this function is invoked to setup the DMA and CORE |
| 3049 | * in a usable state. |
| 3050 | */ |
Giuseppe CAVALLARO | bfab27a | 2011-12-21 03:58:19 +0000 | [diff] [blame] | 3051 | int stmmac_resume(struct net_device *ndev) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3052 | { |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3053 | struct stmmac_priv *priv = netdev_priv(ndev); |
Giuseppe CAVALLARO | f8c5a87 | 2012-05-13 22:18:43 +0000 | [diff] [blame] | 3054 | unsigned long flags; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3055 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3056 | if (!netif_running(ndev)) |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3057 | return 0; |
| 3058 | |
Giuseppe CAVALLARO | f8c5a87 | 2012-05-13 22:18:43 +0000 | [diff] [blame] | 3059 | spin_lock_irqsave(&priv->lock, flags); |
Giuseppe Cavallaro | c4433be | 2010-09-06 05:02:11 +0200 | [diff] [blame] | 3060 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3061 | /* Power Down bit, into the PM register, is cleared |
| 3062 | * automatically as soon as a magic packet or a Wake-up frame |
| 3063 | * is received. Anyway, it's better to manually clear |
| 3064 | * this bit because it can generate problems while resuming |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 3065 | * from another devices (e.g. serial console). |
| 3066 | */ |
Srinivas Kandagatla | 623997f | 2014-01-16 10:52:35 +0000 | [diff] [blame] | 3067 | if (device_may_wakeup(priv->device)) { |
Vince Bridgers | 7ed24bb | 2014-07-31 15:49:13 -0500 | [diff] [blame] | 3068 | priv->hw->mac->pmt(priv->hw, 0); |
Srinivas Kandagatla | 89f7f2c | 2014-01-16 10:53:00 +0000 | [diff] [blame] | 3069 | priv->irq_wake = 0; |
Srinivas Kandagatla | 623997f | 2014-01-16 10:52:35 +0000 | [diff] [blame] | 3070 | } else { |
Srinivas Kandagatla | db88f10 | 2014-01-16 10:52:52 +0000 | [diff] [blame] | 3071 | pinctrl_pm_select_default_state(priv->device); |
Giuseppe CAVALLARO | ba1377ff | 2012-04-04 04:33:25 +0000 | [diff] [blame] | 3072 | /* enable the clk prevously disabled */ |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 3073 | clk_enable(priv->stmmac_clk); |
Andrew Bresticker | 5f9755d | 2015-04-07 13:38:45 -0700 | [diff] [blame] | 3074 | clk_enable(priv->pclk); |
Srinivas Kandagatla | 623997f | 2014-01-16 10:52:35 +0000 | [diff] [blame] | 3075 | /* reset the phy so that it's ready */ |
| 3076 | if (priv->mii) |
| 3077 | stmmac_mdio_reset(priv->mii); |
| 3078 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3079 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3080 | netif_device_attach(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3081 | |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 3082 | init_dma_desc_rings(ndev, GFP_ATOMIC); |
Huacai Chen | fe131929 | 2014-12-19 22:38:18 +0800 | [diff] [blame] | 3083 | stmmac_hw_setup(ndev, false); |
Giuseppe CAVALLARO | 777da23 | 2014-11-04 17:08:09 +0100 | [diff] [blame] | 3084 | stmmac_init_tx_coalesce(priv); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3085 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3086 | napi_enable(&priv->napi); |
| 3087 | |
Giuseppe CAVALLARO | 874bd42 | 2010-11-24 02:38:11 +0000 | [diff] [blame] | 3088 | netif_start_queue(ndev); |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3089 | |
Giuseppe CAVALLARO | f8c5a87 | 2012-05-13 22:18:43 +0000 | [diff] [blame] | 3090 | spin_unlock_irqrestore(&priv->lock, flags); |
Francesco Virlinzi | 102463b | 2011-11-16 21:58:02 +0000 | [diff] [blame] | 3091 | |
| 3092 | if (priv->phydev) |
| 3093 | phy_start(priv->phydev); |
| 3094 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3095 | return 0; |
| 3096 | } |
Andy Shevchenko | b2e2f0c | 2014-11-10 12:38:59 +0200 | [diff] [blame] | 3097 | EXPORT_SYMBOL_GPL(stmmac_resume); |
Giuseppe CAVALLARO | ba27ec6 | 2012-06-04 19:22:57 +0000 | [diff] [blame] | 3098 | |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3099 | #ifndef MODULE |
| 3100 | static int __init stmmac_cmdline_opt(char *str) |
| 3101 | { |
| 3102 | char *opt; |
| 3103 | |
| 3104 | if (!str || !*str) |
| 3105 | return -EINVAL; |
| 3106 | while ((opt = strsep(&str, ",")) != NULL) { |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3107 | if (!strncmp(opt, "debug:", 6)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3108 | if (kstrtoint(opt + 6, 0, &debug)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3109 | goto err; |
| 3110 | } else if (!strncmp(opt, "phyaddr:", 8)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3111 | if (kstrtoint(opt + 8, 0, &phyaddr)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3112 | goto err; |
| 3113 | } else if (!strncmp(opt, "dma_txsize:", 11)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3114 | if (kstrtoint(opt + 11, 0, &dma_txsize)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3115 | goto err; |
| 3116 | } else if (!strncmp(opt, "dma_rxsize:", 11)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3117 | if (kstrtoint(opt + 11, 0, &dma_rxsize)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3118 | goto err; |
| 3119 | } else if (!strncmp(opt, "buf_sz:", 7)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3120 | if (kstrtoint(opt + 7, 0, &buf_sz)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3121 | goto err; |
| 3122 | } else if (!strncmp(opt, "tc:", 3)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3123 | if (kstrtoint(opt + 3, 0, &tc)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3124 | goto err; |
| 3125 | } else if (!strncmp(opt, "watchdog:", 9)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3126 | if (kstrtoint(opt + 9, 0, &watchdog)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3127 | goto err; |
| 3128 | } else if (!strncmp(opt, "flow_ctrl:", 10)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3129 | if (kstrtoint(opt + 10, 0, &flow_ctrl)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3130 | goto err; |
| 3131 | } else if (!strncmp(opt, "pause:", 6)) { |
Giuseppe CAVALLARO | ea2ab87 | 2012-06-27 21:14:35 +0000 | [diff] [blame] | 3132 | if (kstrtoint(opt + 6, 0, &pause)) |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3133 | goto err; |
Giuseppe CAVALLARO | 506f669 | 2013-02-14 23:00:13 +0000 | [diff] [blame] | 3134 | } else if (!strncmp(opt, "eee_timer:", 10)) { |
Giuseppe CAVALLARO | d765955 | 2012-06-27 21:14:37 +0000 | [diff] [blame] | 3135 | if (kstrtoint(opt + 10, 0, &eee_timer)) |
| 3136 | goto err; |
Giuseppe CAVALLARO | 4a7d666 | 2013-03-26 04:43:05 +0000 | [diff] [blame] | 3137 | } else if (!strncmp(opt, "chain_mode:", 11)) { |
| 3138 | if (kstrtoint(opt + 11, 0, &chain_mode)) |
| 3139 | goto err; |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3140 | } |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3141 | } |
| 3142 | return 0; |
Giuseppe CAVALLARO | f3240e2 | 2011-07-20 00:05:22 +0000 | [diff] [blame] | 3143 | |
| 3144 | err: |
| 3145 | pr_err("%s: ERROR broken module parameter conversion", __func__); |
| 3146 | return -EINVAL; |
Giuseppe Cavallaro | 47dd7a5 | 2009-10-14 15:13:45 -0700 | [diff] [blame] | 3147 | } |
| 3148 | |
| 3149 | __setup("stmmaceth=", stmmac_cmdline_opt); |
Giuseppe CAVALLARO | ceb69499 | 2013-04-08 02:10:01 +0000 | [diff] [blame] | 3150 | #endif /* MODULE */ |
Giuseppe Cavallaro | 6fc0d0f | 2011-12-23 14:21:20 -0500 | [diff] [blame] | 3151 | |
| 3152 | MODULE_DESCRIPTION("STMMAC 10/100/1000 Ethernet device driver"); |
| 3153 | MODULE_AUTHOR("Giuseppe Cavallaro <peppe.cavallaro@st.com>"); |
| 3154 | MODULE_LICENSE("GPL"); |