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35 #include "ixgbe_type.h"
36 #include "ixgbe_dcb.h"
37 #include "ixgbe_dcb_82598.h"
40 * ixgbe_dcb_get_tc_stats_82598 - Return status data for each traffic class
41 * @hw: pointer to hardware structure
42 * @stats: pointer to statistics structure
43 * @tc_count: Number of elements in bwg_array.
45 * This function returns the status data for each of the Traffic Classes in use.
47 s32 ixgbe_dcb_get_tc_stats_82598(struct ixgbe_hw *hw,
48 struct ixgbe_hw_stats *stats,
53 DEBUGFUNC("dcb_get_tc_stats");
55 if (tc_count > IXGBE_DCB_MAX_TRAFFIC_CLASS)
56 return IXGBE_ERR_PARAM;
58 /* Statistics pertaining to each traffic class */
59 for (tc = 0; tc < tc_count; tc++) {
60 /* Transmitted Packets */
61 stats->qptc[tc] += IXGBE_READ_REG(hw, IXGBE_QPTC(tc));
62 /* Transmitted Bytes */
63 stats->qbtc[tc] += IXGBE_READ_REG(hw, IXGBE_QBTC(tc));
64 /* Received Packets */
65 stats->qprc[tc] += IXGBE_READ_REG(hw, IXGBE_QPRC(tc));
67 stats->qbrc[tc] += IXGBE_READ_REG(hw, IXGBE_QBRC(tc));
70 /* Can we get rid of these?? Consequently, getting rid
71 * of the tc_stats structure.
73 tc_stats_array[up]->in_overflow_discards = 0;
74 tc_stats_array[up]->out_overflow_discards = 0;
82 * ixgbe_dcb_get_pfc_stats_82598 - Returns CBFC status data
83 * @hw: pointer to hardware structure
84 * @stats: pointer to statistics structure
85 * @tc_count: Number of elements in bwg_array.
87 * This function returns the CBFC status data for each of the Traffic Classes.
89 s32 ixgbe_dcb_get_pfc_stats_82598(struct ixgbe_hw *hw,
90 struct ixgbe_hw_stats *stats,
95 DEBUGFUNC("dcb_get_pfc_stats");
97 if (tc_count > IXGBE_DCB_MAX_TRAFFIC_CLASS)
98 return IXGBE_ERR_PARAM;
100 for (tc = 0; tc < tc_count; tc++) {
101 /* Priority XOFF Transmitted */
102 stats->pxofftxc[tc] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(tc));
103 /* Priority XOFF Received */
104 stats->pxoffrxc[tc] += IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(tc));
107 return IXGBE_SUCCESS;
111 * ixgbe_dcb_config_rx_arbiter_82598 - Config Rx data arbiter
112 * @hw: pointer to hardware structure
113 * @dcb_config: pointer to ixgbe_dcb_config structure
115 * Configure Rx Data Arbiter and credits for each traffic class.
117 s32 ixgbe_dcb_config_rx_arbiter_82598(struct ixgbe_hw *hw, u16 *refill,
121 u32 credit_refill = 0;
125 reg = IXGBE_READ_REG(hw, IXGBE_RUPPBMR) | IXGBE_RUPPBMR_MQA;
126 IXGBE_WRITE_REG(hw, IXGBE_RUPPBMR, reg);
128 reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
130 reg &= ~IXGBE_RMCS_ARBDIS;
131 /* Enable Receive Recycle within the BWG */
132 reg |= IXGBE_RMCS_RRM;
133 /* Enable Deficit Fixed Priority arbitration*/
134 reg |= IXGBE_RMCS_DFP;
136 IXGBE_WRITE_REG(hw, IXGBE_RMCS, reg);
138 /* Configure traffic class credits and priority */
139 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
140 credit_refill = refill[i];
143 reg = credit_refill | (credit_max << IXGBE_RT2CR_MCL_SHIFT);
145 if (tsa[i] == ixgbe_dcb_tsa_strict)
146 reg |= IXGBE_RT2CR_LSP;
148 IXGBE_WRITE_REG(hw, IXGBE_RT2CR(i), reg);
151 reg = IXGBE_READ_REG(hw, IXGBE_RDRXCTL);
152 reg |= IXGBE_RDRXCTL_RDMTS_1_2;
153 reg |= IXGBE_RDRXCTL_MPBEN;
154 reg |= IXGBE_RDRXCTL_MCEN;
155 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, reg);
157 reg = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
158 /* Make sure there is enough descriptors before arbitration */
159 reg &= ~IXGBE_RXCTRL_DMBYPS;
160 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg);
162 return IXGBE_SUCCESS;
166 * ixgbe_dcb_config_tx_desc_arbiter_82598 - Config Tx Desc. arbiter
167 * @hw: pointer to hardware structure
168 * @dcb_config: pointer to ixgbe_dcb_config structure
170 * Configure Tx Descriptor Arbiter and credits for each traffic class.
172 s32 ixgbe_dcb_config_tx_desc_arbiter_82598(struct ixgbe_hw *hw,
173 u16 *refill, u16 *max, u8 *bwg_id,
176 u32 reg, max_credits;
179 reg = IXGBE_READ_REG(hw, IXGBE_DPMCS);
182 reg &= ~IXGBE_DPMCS_ARBDIS;
183 reg |= IXGBE_DPMCS_TSOEF;
185 /* Configure Max TSO packet size 34KB including payload and headers */
186 reg |= (0x4 << IXGBE_DPMCS_MTSOS_SHIFT);
188 IXGBE_WRITE_REG(hw, IXGBE_DPMCS, reg);
190 /* Configure traffic class credits and priority */
191 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
192 max_credits = max[i];
193 reg = max_credits << IXGBE_TDTQ2TCCR_MCL_SHIFT;
195 reg |= (u32)(bwg_id[i]) << IXGBE_TDTQ2TCCR_BWG_SHIFT;
197 if (tsa[i] == ixgbe_dcb_tsa_group_strict_cee)
198 reg |= IXGBE_TDTQ2TCCR_GSP;
200 if (tsa[i] == ixgbe_dcb_tsa_strict)
201 reg |= IXGBE_TDTQ2TCCR_LSP;
203 IXGBE_WRITE_REG(hw, IXGBE_TDTQ2TCCR(i), reg);
206 return IXGBE_SUCCESS;
210 * ixgbe_dcb_config_tx_data_arbiter_82598 - Config Tx data arbiter
211 * @hw: pointer to hardware structure
212 * @dcb_config: pointer to ixgbe_dcb_config structure
214 * Configure Tx Data Arbiter and credits for each traffic class.
216 s32 ixgbe_dcb_config_tx_data_arbiter_82598(struct ixgbe_hw *hw,
217 u16 *refill, u16 *max, u8 *bwg_id,
223 reg = IXGBE_READ_REG(hw, IXGBE_PDPMCS);
224 /* Enable Data Plane Arbiter */
225 reg &= ~IXGBE_PDPMCS_ARBDIS;
226 /* Enable DFP and Transmit Recycle Mode */
227 reg |= (IXGBE_PDPMCS_TPPAC | IXGBE_PDPMCS_TRM);
229 IXGBE_WRITE_REG(hw, IXGBE_PDPMCS, reg);
231 /* Configure traffic class credits and priority */
232 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
234 reg |= (u32)(max[i]) << IXGBE_TDPT2TCCR_MCL_SHIFT;
235 reg |= (u32)(bwg_id[i]) << IXGBE_TDPT2TCCR_BWG_SHIFT;
237 if (tsa[i] == ixgbe_dcb_tsa_group_strict_cee)
238 reg |= IXGBE_TDPT2TCCR_GSP;
240 if (tsa[i] == ixgbe_dcb_tsa_strict)
241 reg |= IXGBE_TDPT2TCCR_LSP;
243 IXGBE_WRITE_REG(hw, IXGBE_TDPT2TCCR(i), reg);
246 /* Enable Tx packet buffer division */
247 reg = IXGBE_READ_REG(hw, IXGBE_DTXCTL);
248 reg |= IXGBE_DTXCTL_ENDBUBD;
249 IXGBE_WRITE_REG(hw, IXGBE_DTXCTL, reg);
251 return IXGBE_SUCCESS;
255 * ixgbe_dcb_config_pfc_82598 - Config priority flow control
256 * @hw: pointer to hardware structure
257 * @dcb_config: pointer to ixgbe_dcb_config structure
259 * Configure Priority Flow Control for each traffic class.
261 s32 ixgbe_dcb_config_pfc_82598(struct ixgbe_hw *hw, u8 pfc_en)
266 /* Enable Transmit Priority Flow Control */
267 reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
268 reg &= ~IXGBE_RMCS_TFCE_802_3X;
269 reg |= IXGBE_RMCS_TFCE_PRIORITY;
270 IXGBE_WRITE_REG(hw, IXGBE_RMCS, reg);
272 /* Enable Receive Priority Flow Control */
273 reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
274 reg &= ~(IXGBE_FCTRL_RPFCE | IXGBE_FCTRL_RFCE);
277 reg |= IXGBE_FCTRL_RPFCE;
279 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, reg);
281 /* Configure PFC Tx thresholds per TC */
282 for (i = 0; i < IXGBE_DCB_MAX_TRAFFIC_CLASS; i++) {
283 if (!(pfc_en & (1 << i))) {
284 IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), 0);
285 IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), 0);
289 fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
290 reg = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
291 IXGBE_WRITE_REG(hw, IXGBE_FCRTL(i), fcrtl);
292 IXGBE_WRITE_REG(hw, IXGBE_FCRTH(i), reg);
295 /* Configure pause time */
296 reg = hw->fc.pause_time | (hw->fc.pause_time << 16);
297 for (i = 0; i < (IXGBE_DCB_MAX_TRAFFIC_CLASS / 2); i++)
298 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
300 /* Configure flow control refresh threshold value */
301 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
303 return IXGBE_SUCCESS;
307 * ixgbe_dcb_config_tc_stats_82598 - Configure traffic class statistics
308 * @hw: pointer to hardware structure
310 * Configure queue statistics registers, all queues belonging to same traffic
311 * class uses a single set of queue statistics counters.
313 s32 ixgbe_dcb_config_tc_stats_82598(struct ixgbe_hw *hw)
319 /* Receive Queues stats setting - 8 queues per statistics reg */
320 for (i = 0, j = 0; i < 15 && j < 8; i = i + 2, j++) {
321 reg = IXGBE_READ_REG(hw, IXGBE_RQSMR(i));
322 reg |= ((0x1010101) * j);
323 IXGBE_WRITE_REG(hw, IXGBE_RQSMR(i), reg);
324 reg = IXGBE_READ_REG(hw, IXGBE_RQSMR(i + 1));
325 reg |= ((0x1010101) * j);
326 IXGBE_WRITE_REG(hw, IXGBE_RQSMR(i + 1), reg);
328 /* Transmit Queues stats setting - 4 queues per statistics reg*/
329 for (i = 0; i < 8; i++) {
330 reg = IXGBE_READ_REG(hw, IXGBE_TQSMR(i));
331 reg |= ((0x1010101) * i);
332 IXGBE_WRITE_REG(hw, IXGBE_TQSMR(i), reg);
335 return IXGBE_SUCCESS;
339 * ixgbe_dcb_hw_config_82598 - Config and enable DCB
340 * @hw: pointer to hardware structure
341 * @dcb_config: pointer to ixgbe_dcb_config structure
343 * Configure dcb settings and enable dcb mode.
345 s32 ixgbe_dcb_hw_config_82598(struct ixgbe_hw *hw, int link_speed,
346 u16 *refill, u16 *max, u8 *bwg_id,
349 UNREFERENCED_1PARAMETER(link_speed);
351 ixgbe_dcb_config_rx_arbiter_82598(hw, refill, max, tsa);
352 ixgbe_dcb_config_tx_desc_arbiter_82598(hw, refill, max, bwg_id,
354 ixgbe_dcb_config_tx_data_arbiter_82598(hw, refill, max, bwg_id,
356 ixgbe_dcb_config_tc_stats_82598(hw);
359 return IXGBE_SUCCESS;