1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-or-later
2 /*
3 * Copyright 2008 - 2015 Freescale Semiconductor Inc.
4 */
5
6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
7
8 #include <linux/io.h>
9 #include <linux/platform_device.h>
10 #include <linux/slab.h>
11 #include <linux/module.h>
12 #include <linux/interrupt.h>
13 #include <linux/of_platform.h>
14 #include <linux/of_address.h>
15 #include <linux/delay.h>
16 #include <linux/libfdt_env.h>
17
18 #include "fman.h"
19 #include "fman_port.h"
20 #include "fman_sp.h"
21 #include "fman_keygen.h"
22
23 /* Queue ID */
24 #define DFLT_FQ_ID 0x00FFFFFF
25
26 /* General defines */
27 #define PORT_BMI_FIFO_UNITS 0x100
28
29 #define MAX_PORT_FIFO_SIZE(bmi_max_fifo_size) \
30 min((u32)bmi_max_fifo_size, (u32)1024 * FMAN_BMI_FIFO_UNITS)
31
32 #define PORT_CG_MAP_NUM 8
33 #define PORT_PRS_RESULT_WORDS_NUM 8
34 #define PORT_IC_OFFSET_UNITS 0x10
35
36 #define MIN_EXT_BUF_SIZE 64
37
38 #define BMI_PORT_REGS_OFFSET 0
39 #define QMI_PORT_REGS_OFFSET 0x400
40 #define HWP_PORT_REGS_OFFSET 0x800
41
42 /* Default values */
43 #define DFLT_PORT_BUFFER_PREFIX_CONTEXT_DATA_ALIGN \
44 DFLT_FM_SP_BUFFER_PREFIX_CONTEXT_DATA_ALIGN
45
46 #define DFLT_PORT_CUT_BYTES_FROM_END 4
47
48 #define DFLT_PORT_ERRORS_TO_DISCARD FM_PORT_FRM_ERR_CLS_DISCARD
49 #define DFLT_PORT_MAX_FRAME_LENGTH 9600
50
51 #define DFLT_PORT_RX_FIFO_PRI_ELEVATION_LEV(bmi_max_fifo_size) \
52 MAX_PORT_FIFO_SIZE(bmi_max_fifo_size)
53
54 #define DFLT_PORT_RX_FIFO_THRESHOLD(major, bmi_max_fifo_size) \
55 (major == 6 ? \
56 MAX_PORT_FIFO_SIZE(bmi_max_fifo_size) : \
57 (MAX_PORT_FIFO_SIZE(bmi_max_fifo_size) * 3 / 4)) \
58
59 #define DFLT_PORT_EXTRA_NUM_OF_FIFO_BUFS 0
60
61 /* QMI defines */
62 #define QMI_DEQ_CFG_SUBPORTAL_MASK 0x1f
63
64 #define QMI_PORT_CFG_EN 0x80000000
65 #define QMI_PORT_STATUS_DEQ_FD_BSY 0x20000000
66
67 #define QMI_DEQ_CFG_PRI 0x80000000
68 #define QMI_DEQ_CFG_TYPE1 0x10000000
69 #define QMI_DEQ_CFG_TYPE2 0x20000000
70 #define QMI_DEQ_CFG_TYPE3 0x30000000
71 #define QMI_DEQ_CFG_PREFETCH_PARTIAL 0x01000000
72 #define QMI_DEQ_CFG_PREFETCH_FULL 0x03000000
73 #define QMI_DEQ_CFG_SP_MASK 0xf
74 #define QMI_DEQ_CFG_SP_SHIFT 20
75
76 #define QMI_BYTE_COUNT_LEVEL_CONTROL(_type) \
77 (_type == FMAN_PORT_TYPE_TX ? 0x1400 : 0x400)
78
79 /* BMI defins */
80 #define BMI_EBD_EN 0x80000000
81
82 #define BMI_PORT_CFG_EN 0x80000000
83
84 #define BMI_PORT_STATUS_BSY 0x80000000
85
86 #define BMI_DMA_ATTR_SWP_SHIFT FMAN_SP_DMA_ATTR_SWP_SHIFT
87 #define BMI_DMA_ATTR_WRITE_OPTIMIZE FMAN_SP_DMA_ATTR_WRITE_OPTIMIZE
88
89 #define BMI_RX_FIFO_PRI_ELEVATION_SHIFT 16
90 #define BMI_RX_FIFO_THRESHOLD_ETHE 0x80000000
91
92 #define BMI_FRAME_END_CS_IGNORE_SHIFT 24
93 #define BMI_FRAME_END_CS_IGNORE_MASK 0x0000001f
94
95 #define BMI_RX_FRAME_END_CUT_SHIFT 16
96 #define BMI_RX_FRAME_END_CUT_MASK 0x0000001f
97
98 #define BMI_IC_TO_EXT_SHIFT FMAN_SP_IC_TO_EXT_SHIFT
99 #define BMI_IC_TO_EXT_MASK 0x0000001f
100 #define BMI_IC_FROM_INT_SHIFT FMAN_SP_IC_FROM_INT_SHIFT
101 #define BMI_IC_FROM_INT_MASK 0x0000000f
102 #define BMI_IC_SIZE_MASK 0x0000001f
103
104 #define BMI_INT_BUF_MARG_SHIFT 28
105 #define BMI_INT_BUF_MARG_MASK 0x0000000f
106 #define BMI_EXT_BUF_MARG_START_SHIFT FMAN_SP_EXT_BUF_MARG_START_SHIFT
107 #define BMI_EXT_BUF_MARG_START_MASK 0x000001ff
108 #define BMI_EXT_BUF_MARG_END_MASK 0x000001ff
109
110 #define BMI_CMD_MR_LEAC 0x00200000
111 #define BMI_CMD_MR_SLEAC 0x00100000
112 #define BMI_CMD_MR_MA 0x00080000
113 #define BMI_CMD_MR_DEAS 0x00040000
114 #define BMI_CMD_RX_MR_DEF (BMI_CMD_MR_LEAC | \
115 BMI_CMD_MR_SLEAC | \
116 BMI_CMD_MR_MA | \
117 BMI_CMD_MR_DEAS)
118 #define BMI_CMD_TX_MR_DEF 0
119
120 #define BMI_CMD_ATTR_ORDER 0x80000000
121 #define BMI_CMD_ATTR_SYNC 0x02000000
122 #define BMI_CMD_ATTR_COLOR_SHIFT 26
123
124 #define BMI_FIFO_PIPELINE_DEPTH_SHIFT 12
125 #define BMI_FIFO_PIPELINE_DEPTH_MASK 0x0000000f
126 #define BMI_NEXT_ENG_FD_BITS_SHIFT 24
127
128 #define BMI_EXT_BUF_POOL_VALID FMAN_SP_EXT_BUF_POOL_VALID
129 #define BMI_EXT_BUF_POOL_EN_COUNTER FMAN_SP_EXT_BUF_POOL_EN_COUNTER
130 #define BMI_EXT_BUF_POOL_BACKUP FMAN_SP_EXT_BUF_POOL_BACKUP
131 #define BMI_EXT_BUF_POOL_ID_SHIFT 16
132 #define BMI_EXT_BUF_POOL_ID_MASK 0x003F0000
133 #define BMI_POOL_DEP_NUM_OF_POOLS_SHIFT 16
134
135 #define BMI_TX_FIFO_MIN_FILL_SHIFT 16
136
137 #define BMI_PRIORITY_ELEVATION_LEVEL ((0x3FF + 1) * PORT_BMI_FIFO_UNITS)
138 #define BMI_FIFO_THRESHOLD ((0x3FF + 1) * PORT_BMI_FIFO_UNITS)
139
140 #define BMI_DEQUEUE_PIPELINE_DEPTH(_type, _speed) \
141 ((_type == FMAN_PORT_TYPE_TX && _speed == 10000) ? 4 : 1)
142
143 #define RX_ERRS_TO_ENQ \
144 (FM_PORT_FRM_ERR_DMA | \
145 FM_PORT_FRM_ERR_PHYSICAL | \
146 FM_PORT_FRM_ERR_SIZE | \
147 FM_PORT_FRM_ERR_EXTRACTION | \
148 FM_PORT_FRM_ERR_NO_SCHEME | \
149 FM_PORT_FRM_ERR_PRS_TIMEOUT | \
150 FM_PORT_FRM_ERR_PRS_ILL_INSTRUCT | \
151 FM_PORT_FRM_ERR_BLOCK_LIMIT_EXCEEDED | \
152 FM_PORT_FRM_ERR_PRS_HDR_ERR | \
153 FM_PORT_FRM_ERR_KEYSIZE_OVERFLOW | \
154 FM_PORT_FRM_ERR_IPRE)
155
156 /* NIA defines */
157 #define NIA_ORDER_RESTOR 0x00800000
158 #define NIA_ENG_BMI 0x00500000
159 #define NIA_ENG_QMI_ENQ 0x00540000
160 #define NIA_ENG_QMI_DEQ 0x00580000
161 #define NIA_ENG_HWP 0x00440000
162 #define NIA_ENG_HWK 0x00480000
163 #define NIA_BMI_AC_ENQ_FRAME 0x00000002
164 #define NIA_BMI_AC_TX_RELEASE 0x000002C0
165 #define NIA_BMI_AC_RELEASE 0x000000C0
166 #define NIA_BMI_AC_TX 0x00000274
167 #define NIA_BMI_AC_FETCH_ALL_FRAME 0x0000020c
168
169 /* Port IDs */
170 #define TX_10G_PORT_BASE 0x30
171 #define RX_10G_PORT_BASE 0x10
172
173 /* BMI Rx port register map */
174 struct fman_port_rx_bmi_regs {
175 u32 fmbm_rcfg; /* Rx Configuration */
176 u32 fmbm_rst; /* Rx Status */
177 u32 fmbm_rda; /* Rx DMA attributes */
178 u32 fmbm_rfp; /* Rx FIFO Parameters */
179 u32 fmbm_rfed; /* Rx Frame End Data */
180 u32 fmbm_ricp; /* Rx Internal Context Parameters */
181 u32 fmbm_rim; /* Rx Internal Buffer Margins */
182 u32 fmbm_rebm; /* Rx External Buffer Margins */
183 u32 fmbm_rfne; /* Rx Frame Next Engine */
184 u32 fmbm_rfca; /* Rx Frame Command Attributes. */
185 u32 fmbm_rfpne; /* Rx Frame Parser Next Engine */
186 u32 fmbm_rpso; /* Rx Parse Start Offset */
187 u32 fmbm_rpp; /* Rx Policer Profile */
188 u32 fmbm_rccb; /* Rx Coarse Classification Base */
189 u32 fmbm_reth; /* Rx Excessive Threshold */
190 u32 reserved003c[1]; /* (0x03C 0x03F) */
191 u32 fmbm_rprai[PORT_PRS_RESULT_WORDS_NUM];
192 /* Rx Parse Results Array Init */
193 u32 fmbm_rfqid; /* Rx Frame Queue ID */
194 u32 fmbm_refqid; /* Rx Error Frame Queue ID */
195 u32 fmbm_rfsdm; /* Rx Frame Status Discard Mask */
196 u32 fmbm_rfsem; /* Rx Frame Status Error Mask */
197 u32 fmbm_rfene; /* Rx Frame Enqueue Next Engine */
198 u32 reserved0074[0x2]; /* (0x074-0x07C) */
199 u32 fmbm_rcmne; /* Rx Frame Continuous Mode Next Engine */
200 u32 reserved0080[0x20]; /* (0x080 0x0FF) */
201 u32 fmbm_ebmpi[FMAN_PORT_MAX_EXT_POOLS_NUM];
202 /* Buffer Manager pool Information- */
203 u32 fmbm_acnt[FMAN_PORT_MAX_EXT_POOLS_NUM]; /* Allocate Counter- */
204 u32 reserved0130[8]; /* 0x130/0x140 - 0x15F reserved - */
205 u32 fmbm_rcgm[PORT_CG_MAP_NUM]; /* Congestion Group Map */
206 u32 fmbm_mpd; /* BM Pool Depletion */
207 u32 reserved0184[0x1F]; /* (0x184 0x1FF) */
208 u32 fmbm_rstc; /* Rx Statistics Counters */
209 u32 fmbm_rfrc; /* Rx Frame Counter */
210 u32 fmbm_rfbc; /* Rx Bad Frames Counter */
211 u32 fmbm_rlfc; /* Rx Large Frames Counter */
212 u32 fmbm_rffc; /* Rx Filter Frames Counter */
213 u32 fmbm_rfdc; /* Rx Frame Discard Counter */
214 u32 fmbm_rfldec; /* Rx Frames List DMA Error Counter */
215 u32 fmbm_rodc; /* Rx Out of Buffers Discard nntr */
216 u32 fmbm_rbdc; /* Rx Buffers Deallocate Counter */
217 u32 fmbm_rpec; /* RX Prepare to enqueue Counte */
218 u32 reserved0224[0x16]; /* (0x224 0x27F) */
219 u32 fmbm_rpc; /* Rx Performance Counters */
220 u32 fmbm_rpcp; /* Rx Performance Count Parameters */
221 u32 fmbm_rccn; /* Rx Cycle Counter */
222 u32 fmbm_rtuc; /* Rx Tasks Utilization Counter */
223 u32 fmbm_rrquc; /* Rx Receive Queue Utilization cntr */
224 u32 fmbm_rduc; /* Rx DMA Utilization Counter */
225 u32 fmbm_rfuc; /* Rx FIFO Utilization Counter */
226 u32 fmbm_rpac; /* Rx Pause Activation Counter */
227 u32 reserved02a0[0x18]; /* (0x2A0 0x2FF) */
228 u32 fmbm_rdcfg[0x3]; /* Rx Debug Configuration */
229 u32 fmbm_rgpr; /* Rx General Purpose Register */
230 u32 reserved0310[0x3a];
231 };
232
233 /* BMI Tx port register map */
234 struct fman_port_tx_bmi_regs {
235 u32 fmbm_tcfg; /* Tx Configuration */
236 u32 fmbm_tst; /* Tx Status */
237 u32 fmbm_tda; /* Tx DMA attributes */
238 u32 fmbm_tfp; /* Tx FIFO Parameters */
239 u32 fmbm_tfed; /* Tx Frame End Data */
240 u32 fmbm_ticp; /* Tx Internal Context Parameters */
241 u32 fmbm_tfdne; /* Tx Frame Dequeue Next Engine. */
242 u32 fmbm_tfca; /* Tx Frame Command attribute. */
243 u32 fmbm_tcfqid; /* Tx Confirmation Frame Queue ID. */
244 u32 fmbm_tefqid; /* Tx Frame Error Queue ID */
245 u32 fmbm_tfene; /* Tx Frame Enqueue Next Engine */
246 u32 fmbm_trlmts; /* Tx Rate Limiter Scale */
247 u32 fmbm_trlmt; /* Tx Rate Limiter */
248 u32 reserved0034[0x0e]; /* (0x034-0x6c) */
249 u32 fmbm_tccb; /* Tx Coarse Classification base */
250 u32 fmbm_tfne; /* Tx Frame Next Engine */
251 u32 fmbm_tpfcm[0x02];
252 /* Tx Priority based Flow Control (PFC) Mapping */
253 u32 fmbm_tcmne; /* Tx Frame Continuous Mode Next Engine */
254 u32 reserved0080[0x60]; /* (0x080-0x200) */
255 u32 fmbm_tstc; /* Tx Statistics Counters */
256 u32 fmbm_tfrc; /* Tx Frame Counter */
257 u32 fmbm_tfdc; /* Tx Frames Discard Counter */
258 u32 fmbm_tfledc; /* Tx Frame len error discard cntr */
259 u32 fmbm_tfufdc; /* Tx Frame unsprt frmt discard cntr */
260 u32 fmbm_tbdc; /* Tx Buffers Deallocate Counter */
261 u32 reserved0218[0x1A]; /* (0x218-0x280) */
262 u32 fmbm_tpc; /* Tx Performance Counters */
263 u32 fmbm_tpcp; /* Tx Performance Count Parameters */
264 u32 fmbm_tccn; /* Tx Cycle Counter */
265 u32 fmbm_ttuc; /* Tx Tasks Utilization Counter */
266 u32 fmbm_ttcquc; /* Tx Transmit conf Q util Counter */
267 u32 fmbm_tduc; /* Tx DMA Utilization Counter */
268 u32 fmbm_tfuc; /* Tx FIFO Utilization Counter */
269 u32 reserved029c[16]; /* (0x29C-0x2FF) */
270 u32 fmbm_tdcfg[0x3]; /* Tx Debug Configuration */
271 u32 fmbm_tgpr; /* Tx General Purpose Register */
272 u32 reserved0310[0x3a]; /* (0x310-0x3FF) */
273 };
274
275 /* BMI port register map */
276 union fman_port_bmi_regs {
277 struct fman_port_rx_bmi_regs rx;
278 struct fman_port_tx_bmi_regs tx;
279 };
280
281 /* QMI port register map */
282 struct fman_port_qmi_regs {
283 u32 fmqm_pnc; /* PortID n Configuration Register */
284 u32 fmqm_pns; /* PortID n Status Register */
285 u32 fmqm_pnts; /* PortID n Task Status Register */
286 u32 reserved00c[4]; /* 0xn00C - 0xn01B */
287 u32 fmqm_pnen; /* PortID n Enqueue NIA Register */
288 u32 fmqm_pnetfc; /* PortID n Enq Total Frame Counter */
289 u32 reserved024[2]; /* 0xn024 - 0x02B */
290 u32 fmqm_pndn; /* PortID n Dequeue NIA Register */
291 u32 fmqm_pndc; /* PortID n Dequeue Config Register */
292 u32 fmqm_pndtfc; /* PortID n Dequeue tot Frame cntr */
293 u32 fmqm_pndfdc; /* PortID n Dequeue FQID Dflt Cntr */
294 u32 fmqm_pndcc; /* PortID n Dequeue Confirm Counter */
295 };
296
297 #define HWP_HXS_COUNT 16
298 #define HWP_HXS_PHE_REPORT 0x00000800
299 #define HWP_HXS_PCAC_PSTAT 0x00000100
300 #define HWP_HXS_PCAC_PSTOP 0x00000001
301 #define HWP_HXS_TCP_OFFSET 0xA
302 #define HWP_HXS_UDP_OFFSET 0xB
303 #define HWP_HXS_SH_PAD_REM 0x80000000
304
305 struct fman_port_hwp_regs {
306 struct {
307 u32 ssa; /* Soft Sequence Attachment */
308 u32 lcv; /* Line-up Enable Confirmation Mask */
309 } pmda[HWP_HXS_COUNT]; /* Parse Memory Direct Access Registers */
310 u32 reserved080[(0x3f8 - 0x080) / 4]; /* (0x080-0x3f7) */
311 u32 fmpr_pcac; /* Configuration Access Control */
312 };
313
314 /* QMI dequeue prefetch modes */
315 enum fman_port_deq_prefetch {
316 FMAN_PORT_DEQ_NO_PREFETCH, /* No prefetch mode */
317 FMAN_PORT_DEQ_PART_PREFETCH, /* Partial prefetch mode */
318 FMAN_PORT_DEQ_FULL_PREFETCH /* Full prefetch mode */
319 };
320
321 /* A structure for defining FM port resources */
322 struct fman_port_rsrc {
323 u32 num; /* Committed required resource */
324 u32 extra; /* Extra (not committed) required resource */
325 };
326
327 enum fman_port_dma_swap {
328 FMAN_PORT_DMA_NO_SWAP, /* No swap, transfer data as is */
329 FMAN_PORT_DMA_SWAP_LE,
330 /* The transferred data should be swapped in PPC Little Endian mode */
331 FMAN_PORT_DMA_SWAP_BE
332 /* The transferred data should be swapped in Big Endian mode */
333 };
334
335 /* Default port color */
336 enum fman_port_color {
337 FMAN_PORT_COLOR_GREEN, /* Default port color is green */
338 FMAN_PORT_COLOR_YELLOW, /* Default port color is yellow */
339 FMAN_PORT_COLOR_RED, /* Default port color is red */
340 FMAN_PORT_COLOR_OVERRIDE /* Ignore color */
341 };
342
343 /* QMI dequeue from the SP channel - types */
344 enum fman_port_deq_type {
345 FMAN_PORT_DEQ_BY_PRI,
346 /* Priority precedence and Intra-Class scheduling */
347 FMAN_PORT_DEQ_ACTIVE_FQ,
348 /* Active FQ precedence and Intra-Class scheduling */
349 FMAN_PORT_DEQ_ACTIVE_FQ_NO_ICS
350 /* Active FQ precedence and override Intra-Class scheduling */
351 };
352
353 /* External buffer pools configuration */
354 struct fman_port_bpools {
355 u8 count; /* Num of pools to set up */
356 bool counters_enable; /* Enable allocate counters */
357 u8 grp_bp_depleted_num;
358 /* Number of depleted pools - if reached the BMI indicates
359 * the MAC to send a pause frame
360 */
361 struct {
362 u8 bpid; /* BM pool ID */
363 u16 size;
364 /* Pool's size - must be in ascending order */
365 bool is_backup;
366 /* If this is a backup pool */
367 bool grp_bp_depleted;
368 /* Consider this buffer in multiple pools depletion criteria */
369 bool single_bp_depleted;
370 /* Consider this buffer in single pool depletion criteria */
371 } bpool[FMAN_PORT_MAX_EXT_POOLS_NUM];
372 };
373
374 struct fman_port_cfg {
375 u32 dflt_fqid;
376 u32 err_fqid;
377 u32 pcd_base_fqid;
378 u32 pcd_fqs_count;
379 u8 deq_sp;
380 bool deq_high_priority;
381 enum fman_port_deq_type deq_type;
382 enum fman_port_deq_prefetch deq_prefetch_option;
383 u16 deq_byte_cnt;
384 u8 cheksum_last_bytes_ignore;
385 u8 rx_cut_end_bytes;
386 struct fman_buf_pool_depletion buf_pool_depletion;
387 struct fman_ext_pools ext_buf_pools;
388 u32 tx_fifo_min_level;
389 u32 tx_fifo_low_comf_level;
390 u32 rx_pri_elevation;
391 u32 rx_fifo_thr;
392 struct fman_sp_buf_margins buf_margins;
393 u32 int_buf_start_margin;
394 struct fman_sp_int_context_data_copy int_context;
395 u32 discard_mask;
396 u32 err_mask;
397 struct fman_buffer_prefix_content buffer_prefix_content;
398 bool dont_release_buf;
399
400 u8 rx_fd_bits;
401 u32 tx_fifo_deq_pipeline_depth;
402 bool errata_A006320;
403 bool excessive_threshold_register;
404 bool fmbm_tfne_has_features;
405
406 enum fman_port_dma_swap dma_swap_data;
407 enum fman_port_color color;
408 };
409
410 struct fman_port_rx_pools_params {
411 u8 num_of_pools;
412 u16 largest_buf_size;
413 };
414
415 struct fman_port_dts_params {
416 void __iomem *base_addr; /* FMan port virtual memory */
417 enum fman_port_type type; /* Port type */
418 u16 speed; /* Port speed */
419 u8 id; /* HW Port Id */
420 u32 qman_channel_id; /* QMan channel id (non RX only) */
421 struct fman *fman; /* FMan Handle */
422 };
423
424 struct fman_port {
425 void *fm;
426 struct device *dev;
427 struct fman_rev_info rev_info;
428 u8 port_id;
429 enum fman_port_type port_type;
430 u16 port_speed;
431
432 union fman_port_bmi_regs __iomem *bmi_regs;
433 struct fman_port_qmi_regs __iomem *qmi_regs;
434 struct fman_port_hwp_regs __iomem *hwp_regs;
435
436 struct fman_sp_buffer_offsets buffer_offsets;
437
438 u8 internal_buf_offset;
439 struct fman_ext_pools ext_buf_pools;
440
441 u16 max_frame_length;
442 struct fman_port_rsrc open_dmas;
443 struct fman_port_rsrc tasks;
444 struct fman_port_rsrc fifo_bufs;
445 struct fman_port_rx_pools_params rx_pools_params;
446
447 struct fman_port_cfg *cfg;
448 struct fman_port_dts_params dts_params;
449
450 u8 ext_pools_num;
451 u32 max_port_fifo_size;
452 u32 max_num_of_ext_pools;
453 u32 max_num_of_sub_portals;
454 u32 bm_max_num_of_pools;
455 };
456
init_bmi_rx(struct fman_port * port)457 static int init_bmi_rx(struct fman_port *port)
458 {
459 struct fman_port_rx_bmi_regs __iomem *regs = &port->bmi_regs->rx;
460 struct fman_port_cfg *cfg = port->cfg;
461 u32 tmp;
462
463 /* DMA attributes */
464 tmp = (u32)cfg->dma_swap_data << BMI_DMA_ATTR_SWP_SHIFT;
465 /* Enable write optimization */
466 tmp |= BMI_DMA_ATTR_WRITE_OPTIMIZE;
467 iowrite32be(tmp, ®s->fmbm_rda);
468
469 /* Rx FIFO parameters */
470 tmp = (cfg->rx_pri_elevation / PORT_BMI_FIFO_UNITS - 1) <<
471 BMI_RX_FIFO_PRI_ELEVATION_SHIFT;
472 tmp |= cfg->rx_fifo_thr / PORT_BMI_FIFO_UNITS - 1;
473 iowrite32be(tmp, ®s->fmbm_rfp);
474
475 if (cfg->excessive_threshold_register)
476 /* always allow access to the extra resources */
477 iowrite32be(BMI_RX_FIFO_THRESHOLD_ETHE, ®s->fmbm_reth);
478
479 /* Frame end data */
480 tmp = (cfg->cheksum_last_bytes_ignore & BMI_FRAME_END_CS_IGNORE_MASK) <<
481 BMI_FRAME_END_CS_IGNORE_SHIFT;
482 tmp |= (cfg->rx_cut_end_bytes & BMI_RX_FRAME_END_CUT_MASK) <<
483 BMI_RX_FRAME_END_CUT_SHIFT;
484 if (cfg->errata_A006320)
485 tmp &= 0xffe0ffff;
486 iowrite32be(tmp, ®s->fmbm_rfed);
487
488 /* Internal context parameters */
489 tmp = ((cfg->int_context.ext_buf_offset / PORT_IC_OFFSET_UNITS) &
490 BMI_IC_TO_EXT_MASK) << BMI_IC_TO_EXT_SHIFT;
491 tmp |= ((cfg->int_context.int_context_offset / PORT_IC_OFFSET_UNITS) &
492 BMI_IC_FROM_INT_MASK) << BMI_IC_FROM_INT_SHIFT;
493 tmp |= (cfg->int_context.size / PORT_IC_OFFSET_UNITS) &
494 BMI_IC_SIZE_MASK;
495 iowrite32be(tmp, ®s->fmbm_ricp);
496
497 /* Internal buffer offset */
498 tmp = ((cfg->int_buf_start_margin / PORT_IC_OFFSET_UNITS) &
499 BMI_INT_BUF_MARG_MASK) << BMI_INT_BUF_MARG_SHIFT;
500 iowrite32be(tmp, ®s->fmbm_rim);
501
502 /* External buffer margins */
503 tmp = (cfg->buf_margins.start_margins & BMI_EXT_BUF_MARG_START_MASK) <<
504 BMI_EXT_BUF_MARG_START_SHIFT;
505 tmp |= cfg->buf_margins.end_margins & BMI_EXT_BUF_MARG_END_MASK;
506 iowrite32be(tmp, ®s->fmbm_rebm);
507
508 /* Frame attributes */
509 tmp = BMI_CMD_RX_MR_DEF;
510 tmp |= BMI_CMD_ATTR_ORDER;
511 tmp |= (u32)cfg->color << BMI_CMD_ATTR_COLOR_SHIFT;
512 /* Synchronization request */
513 tmp |= BMI_CMD_ATTR_SYNC;
514
515 iowrite32be(tmp, ®s->fmbm_rfca);
516
517 /* NIA */
518 tmp = (u32)cfg->rx_fd_bits << BMI_NEXT_ENG_FD_BITS_SHIFT;
519
520 tmp |= NIA_ENG_HWP;
521 iowrite32be(tmp, ®s->fmbm_rfne);
522
523 /* Parser Next Engine NIA */
524 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_ENQ_FRAME, ®s->fmbm_rfpne);
525
526 /* Enqueue NIA */
527 iowrite32be(NIA_ENG_QMI_ENQ | NIA_ORDER_RESTOR, ®s->fmbm_rfene);
528
529 /* Default/error queues */
530 iowrite32be((cfg->dflt_fqid & DFLT_FQ_ID), ®s->fmbm_rfqid);
531 iowrite32be((cfg->err_fqid & DFLT_FQ_ID), ®s->fmbm_refqid);
532
533 /* Discard/error masks */
534 iowrite32be(cfg->discard_mask, ®s->fmbm_rfsdm);
535 iowrite32be(cfg->err_mask, ®s->fmbm_rfsem);
536
537 return 0;
538 }
539
init_bmi_tx(struct fman_port * port)540 static int init_bmi_tx(struct fman_port *port)
541 {
542 struct fman_port_tx_bmi_regs __iomem *regs = &port->bmi_regs->tx;
543 struct fman_port_cfg *cfg = port->cfg;
544 u32 tmp;
545
546 /* Tx Configuration register */
547 tmp = 0;
548 iowrite32be(tmp, ®s->fmbm_tcfg);
549
550 /* DMA attributes */
551 tmp = (u32)cfg->dma_swap_data << BMI_DMA_ATTR_SWP_SHIFT;
552 iowrite32be(tmp, ®s->fmbm_tda);
553
554 /* Tx FIFO parameters */
555 tmp = (cfg->tx_fifo_min_level / PORT_BMI_FIFO_UNITS) <<
556 BMI_TX_FIFO_MIN_FILL_SHIFT;
557 tmp |= ((cfg->tx_fifo_deq_pipeline_depth - 1) &
558 BMI_FIFO_PIPELINE_DEPTH_MASK) << BMI_FIFO_PIPELINE_DEPTH_SHIFT;
559 tmp |= (cfg->tx_fifo_low_comf_level / PORT_BMI_FIFO_UNITS) - 1;
560 iowrite32be(tmp, ®s->fmbm_tfp);
561
562 /* Frame end data */
563 tmp = (cfg->cheksum_last_bytes_ignore & BMI_FRAME_END_CS_IGNORE_MASK) <<
564 BMI_FRAME_END_CS_IGNORE_SHIFT;
565 iowrite32be(tmp, ®s->fmbm_tfed);
566
567 /* Internal context parameters */
568 tmp = ((cfg->int_context.ext_buf_offset / PORT_IC_OFFSET_UNITS) &
569 BMI_IC_TO_EXT_MASK) << BMI_IC_TO_EXT_SHIFT;
570 tmp |= ((cfg->int_context.int_context_offset / PORT_IC_OFFSET_UNITS) &
571 BMI_IC_FROM_INT_MASK) << BMI_IC_FROM_INT_SHIFT;
572 tmp |= (cfg->int_context.size / PORT_IC_OFFSET_UNITS) &
573 BMI_IC_SIZE_MASK;
574 iowrite32be(tmp, ®s->fmbm_ticp);
575
576 /* Frame attributes */
577 tmp = BMI_CMD_TX_MR_DEF;
578 tmp |= BMI_CMD_ATTR_ORDER;
579 tmp |= (u32)cfg->color << BMI_CMD_ATTR_COLOR_SHIFT;
580 iowrite32be(tmp, ®s->fmbm_tfca);
581
582 /* Dequeue NIA + enqueue NIA */
583 iowrite32be(NIA_ENG_QMI_DEQ, ®s->fmbm_tfdne);
584 iowrite32be(NIA_ENG_QMI_ENQ | NIA_ORDER_RESTOR, ®s->fmbm_tfene);
585 if (cfg->fmbm_tfne_has_features)
586 iowrite32be(!cfg->dflt_fqid ?
587 BMI_EBD_EN | NIA_BMI_AC_FETCH_ALL_FRAME :
588 NIA_BMI_AC_FETCH_ALL_FRAME, ®s->fmbm_tfne);
589 if (!cfg->dflt_fqid && cfg->dont_release_buf) {
590 iowrite32be(DFLT_FQ_ID, ®s->fmbm_tcfqid);
591 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
592 ®s->fmbm_tfene);
593 if (cfg->fmbm_tfne_has_features)
594 iowrite32be(ioread32be(®s->fmbm_tfne) & ~BMI_EBD_EN,
595 ®s->fmbm_tfne);
596 }
597
598 /* Confirmation/error queues */
599 if (cfg->dflt_fqid || !cfg->dont_release_buf)
600 iowrite32be(cfg->dflt_fqid & DFLT_FQ_ID, ®s->fmbm_tcfqid);
601 iowrite32be((cfg->err_fqid & DFLT_FQ_ID), ®s->fmbm_tefqid);
602
603 return 0;
604 }
605
init_qmi(struct fman_port * port)606 static int init_qmi(struct fman_port *port)
607 {
608 struct fman_port_qmi_regs __iomem *regs = port->qmi_regs;
609 struct fman_port_cfg *cfg = port->cfg;
610 u32 tmp;
611
612 /* Rx port configuration */
613 if (port->port_type == FMAN_PORT_TYPE_RX) {
614 /* Enqueue NIA */
615 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_RELEASE, ®s->fmqm_pnen);
616 return 0;
617 }
618
619 /* Continue with Tx port configuration */
620 if (port->port_type == FMAN_PORT_TYPE_TX) {
621 /* Enqueue NIA */
622 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
623 ®s->fmqm_pnen);
624 /* Dequeue NIA */
625 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX, ®s->fmqm_pndn);
626 }
627
628 /* Dequeue Configuration register */
629 tmp = 0;
630 if (cfg->deq_high_priority)
631 tmp |= QMI_DEQ_CFG_PRI;
632
633 switch (cfg->deq_type) {
634 case FMAN_PORT_DEQ_BY_PRI:
635 tmp |= QMI_DEQ_CFG_TYPE1;
636 break;
637 case FMAN_PORT_DEQ_ACTIVE_FQ:
638 tmp |= QMI_DEQ_CFG_TYPE2;
639 break;
640 case FMAN_PORT_DEQ_ACTIVE_FQ_NO_ICS:
641 tmp |= QMI_DEQ_CFG_TYPE3;
642 break;
643 default:
644 return -EINVAL;
645 }
646
647 switch (cfg->deq_prefetch_option) {
648 case FMAN_PORT_DEQ_NO_PREFETCH:
649 break;
650 case FMAN_PORT_DEQ_PART_PREFETCH:
651 tmp |= QMI_DEQ_CFG_PREFETCH_PARTIAL;
652 break;
653 case FMAN_PORT_DEQ_FULL_PREFETCH:
654 tmp |= QMI_DEQ_CFG_PREFETCH_FULL;
655 break;
656 default:
657 return -EINVAL;
658 }
659
660 tmp |= (cfg->deq_sp & QMI_DEQ_CFG_SP_MASK) << QMI_DEQ_CFG_SP_SHIFT;
661 tmp |= cfg->deq_byte_cnt;
662 iowrite32be(tmp, ®s->fmqm_pndc);
663
664 return 0;
665 }
666
stop_port_hwp(struct fman_port * port)667 static void stop_port_hwp(struct fman_port *port)
668 {
669 struct fman_port_hwp_regs __iomem *regs = port->hwp_regs;
670 int cnt = 100;
671
672 iowrite32be(HWP_HXS_PCAC_PSTOP, ®s->fmpr_pcac);
673
674 while (cnt-- > 0 &&
675 (ioread32be(®s->fmpr_pcac) & HWP_HXS_PCAC_PSTAT))
676 udelay(10);
677 if (!cnt)
678 pr_err("Timeout stopping HW Parser\n");
679 }
680
start_port_hwp(struct fman_port * port)681 static void start_port_hwp(struct fman_port *port)
682 {
683 struct fman_port_hwp_regs __iomem *regs = port->hwp_regs;
684 int cnt = 100;
685
686 iowrite32be(0, ®s->fmpr_pcac);
687
688 while (cnt-- > 0 &&
689 !(ioread32be(®s->fmpr_pcac) & HWP_HXS_PCAC_PSTAT))
690 udelay(10);
691 if (!cnt)
692 pr_err("Timeout starting HW Parser\n");
693 }
694
init_hwp(struct fman_port * port)695 static void init_hwp(struct fman_port *port)
696 {
697 struct fman_port_hwp_regs __iomem *regs = port->hwp_regs;
698 int i;
699
700 stop_port_hwp(port);
701
702 for (i = 0; i < HWP_HXS_COUNT; i++) {
703 /* enable HXS error reporting into FD[STATUS] PHE */
704 iowrite32be(0x00000000, ®s->pmda[i].ssa);
705 iowrite32be(0xffffffff, ®s->pmda[i].lcv);
706 }
707
708 /* Short packet padding removal from checksum calculation */
709 iowrite32be(HWP_HXS_SH_PAD_REM, ®s->pmda[HWP_HXS_TCP_OFFSET].ssa);
710 iowrite32be(HWP_HXS_SH_PAD_REM, ®s->pmda[HWP_HXS_UDP_OFFSET].ssa);
711
712 start_port_hwp(port);
713 }
714
init(struct fman_port * port)715 static int init(struct fman_port *port)
716 {
717 int err;
718
719 /* Init BMI registers */
720 switch (port->port_type) {
721 case FMAN_PORT_TYPE_RX:
722 err = init_bmi_rx(port);
723 if (!err)
724 init_hwp(port);
725 break;
726 case FMAN_PORT_TYPE_TX:
727 err = init_bmi_tx(port);
728 break;
729 default:
730 return -EINVAL;
731 }
732
733 if (err)
734 return err;
735
736 /* Init QMI registers */
737 err = init_qmi(port);
738 if (err)
739 return err;
740
741 return 0;
742 }
743
set_bpools(const struct fman_port * port,const struct fman_port_bpools * bp)744 static int set_bpools(const struct fman_port *port,
745 const struct fman_port_bpools *bp)
746 {
747 u32 __iomem *bp_reg, *bp_depl_reg;
748 u32 tmp;
749 u8 i, max_bp_num;
750 bool grp_depl_used = false, rx_port;
751
752 switch (port->port_type) {
753 case FMAN_PORT_TYPE_RX:
754 max_bp_num = port->ext_pools_num;
755 rx_port = true;
756 bp_reg = port->bmi_regs->rx.fmbm_ebmpi;
757 bp_depl_reg = &port->bmi_regs->rx.fmbm_mpd;
758 break;
759 default:
760 return -EINVAL;
761 }
762
763 if (rx_port) {
764 /* Check buffers are provided in ascending order */
765 for (i = 0; (i < (bp->count - 1) &&
766 (i < FMAN_PORT_MAX_EXT_POOLS_NUM - 1)); i++) {
767 if (bp->bpool[i].size > bp->bpool[i + 1].size)
768 return -EINVAL;
769 }
770 }
771
772 /* Set up external buffers pools */
773 for (i = 0; i < bp->count; i++) {
774 tmp = BMI_EXT_BUF_POOL_VALID;
775 tmp |= ((u32)bp->bpool[i].bpid <<
776 BMI_EXT_BUF_POOL_ID_SHIFT) & BMI_EXT_BUF_POOL_ID_MASK;
777
778 if (rx_port) {
779 if (bp->counters_enable)
780 tmp |= BMI_EXT_BUF_POOL_EN_COUNTER;
781
782 if (bp->bpool[i].is_backup)
783 tmp |= BMI_EXT_BUF_POOL_BACKUP;
784
785 tmp |= (u32)bp->bpool[i].size;
786 }
787
788 iowrite32be(tmp, &bp_reg[i]);
789 }
790
791 /* Clear unused pools */
792 for (i = bp->count; i < max_bp_num; i++)
793 iowrite32be(0, &bp_reg[i]);
794
795 /* Pools depletion */
796 tmp = 0;
797 for (i = 0; i < FMAN_PORT_MAX_EXT_POOLS_NUM; i++) {
798 if (bp->bpool[i].grp_bp_depleted) {
799 grp_depl_used = true;
800 tmp |= 0x80000000 >> i;
801 }
802
803 if (bp->bpool[i].single_bp_depleted)
804 tmp |= 0x80 >> i;
805 }
806
807 if (grp_depl_used)
808 tmp |= ((u32)bp->grp_bp_depleted_num - 1) <<
809 BMI_POOL_DEP_NUM_OF_POOLS_SHIFT;
810
811 iowrite32be(tmp, bp_depl_reg);
812 return 0;
813 }
814
is_init_done(struct fman_port_cfg * cfg)815 static bool is_init_done(struct fman_port_cfg *cfg)
816 {
817 /* Checks if FMan port driver parameters were initialized */
818 if (!cfg)
819 return true;
820
821 return false;
822 }
823
verify_size_of_fifo(struct fman_port * port)824 static int verify_size_of_fifo(struct fman_port *port)
825 {
826 u32 min_fifo_size_required = 0, opt_fifo_size_for_b2b = 0;
827
828 /* TX Ports */
829 if (port->port_type == FMAN_PORT_TYPE_TX) {
830 min_fifo_size_required = (u32)
831 (roundup(port->max_frame_length,
832 FMAN_BMI_FIFO_UNITS) + (3 * FMAN_BMI_FIFO_UNITS));
833
834 min_fifo_size_required +=
835 port->cfg->tx_fifo_deq_pipeline_depth *
836 FMAN_BMI_FIFO_UNITS;
837
838 opt_fifo_size_for_b2b = min_fifo_size_required;
839
840 /* Add some margin for back-to-back capability to improve
841 * performance, allows the hardware to pipeline new frame dma
842 * while the previous frame not yet transmitted.
843 */
844 if (port->port_speed == 10000)
845 opt_fifo_size_for_b2b += 3 * FMAN_BMI_FIFO_UNITS;
846 else
847 opt_fifo_size_for_b2b += 2 * FMAN_BMI_FIFO_UNITS;
848 }
849
850 /* RX Ports */
851 else if (port->port_type == FMAN_PORT_TYPE_RX) {
852 if (port->rev_info.major >= 6)
853 min_fifo_size_required = (u32)
854 (roundup(port->max_frame_length,
855 FMAN_BMI_FIFO_UNITS) +
856 (5 * FMAN_BMI_FIFO_UNITS));
857 /* 4 according to spec + 1 for FOF>0 */
858 else
859 min_fifo_size_required = (u32)
860 (roundup(min(port->max_frame_length,
861 port->rx_pools_params.largest_buf_size),
862 FMAN_BMI_FIFO_UNITS) +
863 (7 * FMAN_BMI_FIFO_UNITS));
864
865 opt_fifo_size_for_b2b = min_fifo_size_required;
866
867 /* Add some margin for back-to-back capability to improve
868 * performance,allows the hardware to pipeline new frame dma
869 * while the previous frame not yet transmitted.
870 */
871 if (port->port_speed == 10000)
872 opt_fifo_size_for_b2b += 8 * FMAN_BMI_FIFO_UNITS;
873 else
874 opt_fifo_size_for_b2b += 3 * FMAN_BMI_FIFO_UNITS;
875 }
876
877 WARN_ON(min_fifo_size_required <= 0);
878 WARN_ON(opt_fifo_size_for_b2b < min_fifo_size_required);
879
880 /* Verify the size */
881 if (port->fifo_bufs.num < min_fifo_size_required)
882 dev_dbg(port->dev, "%s: FIFO size should be enlarged to %d bytes\n",
883 __func__, min_fifo_size_required);
884 else if (port->fifo_bufs.num < opt_fifo_size_for_b2b)
885 dev_dbg(port->dev, "%s: For b2b processing,FIFO may be enlarged to %d bytes\n",
886 __func__, opt_fifo_size_for_b2b);
887
888 return 0;
889 }
890
set_ext_buffer_pools(struct fman_port * port)891 static int set_ext_buffer_pools(struct fman_port *port)
892 {
893 struct fman_ext_pools *ext_buf_pools = &port->cfg->ext_buf_pools;
894 struct fman_buf_pool_depletion *buf_pool_depletion =
895 &port->cfg->buf_pool_depletion;
896 u8 ordered_array[FMAN_PORT_MAX_EXT_POOLS_NUM];
897 u16 sizes_array[BM_MAX_NUM_OF_POOLS];
898 int i = 0, j = 0, err;
899 struct fman_port_bpools bpools;
900
901 memset(&ordered_array, 0, sizeof(u8) * FMAN_PORT_MAX_EXT_POOLS_NUM);
902 memset(&sizes_array, 0, sizeof(u16) * BM_MAX_NUM_OF_POOLS);
903 memcpy(&port->ext_buf_pools, ext_buf_pools,
904 sizeof(struct fman_ext_pools));
905
906 fman_sp_set_buf_pools_in_asc_order_of_buf_sizes(ext_buf_pools,
907 ordered_array,
908 sizes_array);
909
910 memset(&bpools, 0, sizeof(struct fman_port_bpools));
911 bpools.count = ext_buf_pools->num_of_pools_used;
912 bpools.counters_enable = true;
913 for (i = 0; i < ext_buf_pools->num_of_pools_used; i++) {
914 bpools.bpool[i].bpid = ordered_array[i];
915 bpools.bpool[i].size = sizes_array[ordered_array[i]];
916 }
917
918 /* save pools parameters for later use */
919 port->rx_pools_params.num_of_pools = ext_buf_pools->num_of_pools_used;
920 port->rx_pools_params.largest_buf_size =
921 sizes_array[ordered_array[ext_buf_pools->num_of_pools_used - 1]];
922
923 /* FMBM_RMPD reg. - pool depletion */
924 if (buf_pool_depletion->pools_grp_mode_enable) {
925 bpools.grp_bp_depleted_num = buf_pool_depletion->num_of_pools;
926 for (i = 0; i < port->bm_max_num_of_pools; i++) {
927 if (buf_pool_depletion->pools_to_consider[i]) {
928 for (j = 0; j < ext_buf_pools->
929 num_of_pools_used; j++) {
930 if (i == ordered_array[j]) {
931 bpools.bpool[j].
932 grp_bp_depleted = true;
933 break;
934 }
935 }
936 }
937 }
938 }
939
940 if (buf_pool_depletion->single_pool_mode_enable) {
941 for (i = 0; i < port->bm_max_num_of_pools; i++) {
942 if (buf_pool_depletion->
943 pools_to_consider_for_single_mode[i]) {
944 for (j = 0; j < ext_buf_pools->
945 num_of_pools_used; j++) {
946 if (i == ordered_array[j]) {
947 bpools.bpool[j].
948 single_bp_depleted = true;
949 break;
950 }
951 }
952 }
953 }
954 }
955
956 err = set_bpools(port, &bpools);
957 if (err != 0) {
958 dev_err(port->dev, "%s: set_bpools() failed\n", __func__);
959 return -EINVAL;
960 }
961
962 return 0;
963 }
964
init_low_level_driver(struct fman_port * port)965 static int init_low_level_driver(struct fman_port *port)
966 {
967 struct fman_port_cfg *cfg = port->cfg;
968 u32 tmp_val;
969
970 switch (port->port_type) {
971 case FMAN_PORT_TYPE_RX:
972 cfg->err_mask = (RX_ERRS_TO_ENQ & ~cfg->discard_mask);
973 break;
974 default:
975 break;
976 }
977
978 tmp_val = (u32)((port->internal_buf_offset % OFFSET_UNITS) ?
979 (port->internal_buf_offset / OFFSET_UNITS + 1) :
980 (port->internal_buf_offset / OFFSET_UNITS));
981 port->internal_buf_offset = (u8)(tmp_val * OFFSET_UNITS);
982 port->cfg->int_buf_start_margin = port->internal_buf_offset;
983
984 if (init(port) != 0) {
985 dev_err(port->dev, "%s: fman port initialization failed\n",
986 __func__);
987 return -ENODEV;
988 }
989
990 /* The code bellow is a trick so the FM will not release the buffer
991 * to BM nor will try to enqueue the frame to QM
992 */
993 if (port->port_type == FMAN_PORT_TYPE_TX) {
994 if (!cfg->dflt_fqid && cfg->dont_release_buf) {
995 /* override fmbm_tcfqid 0 with a false non-0 value.
996 * This will force FM to act according to tfene.
997 * Otherwise, if fmbm_tcfqid is 0 the FM will release
998 * buffers to BM regardless of fmbm_tfene
999 */
1000 iowrite32be(0xFFFFFF, &port->bmi_regs->tx.fmbm_tcfqid);
1001 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_TX_RELEASE,
1002 &port->bmi_regs->tx.fmbm_tfene);
1003 }
1004 }
1005
1006 return 0;
1007 }
1008
fill_soc_specific_params(struct fman_port * port)1009 static int fill_soc_specific_params(struct fman_port *port)
1010 {
1011 u32 bmi_max_fifo_size;
1012
1013 bmi_max_fifo_size = fman_get_bmi_max_fifo_size(port->fm);
1014 port->max_port_fifo_size = MAX_PORT_FIFO_SIZE(bmi_max_fifo_size);
1015 port->bm_max_num_of_pools = 64;
1016
1017 /* P4080 - Major 2
1018 * P2041/P3041/P5020/P5040 - Major 3
1019 * Tx/Bx - Major 6
1020 */
1021 switch (port->rev_info.major) {
1022 case 2:
1023 case 3:
1024 port->max_num_of_ext_pools = 4;
1025 port->max_num_of_sub_portals = 12;
1026 break;
1027
1028 case 6:
1029 port->max_num_of_ext_pools = 8;
1030 port->max_num_of_sub_portals = 16;
1031 break;
1032
1033 default:
1034 dev_err(port->dev, "%s: Unsupported FMan version\n", __func__);
1035 return -EINVAL;
1036 }
1037
1038 return 0;
1039 }
1040
get_dflt_fifo_deq_pipeline_depth(u8 major,enum fman_port_type type,u16 speed)1041 static int get_dflt_fifo_deq_pipeline_depth(u8 major, enum fman_port_type type,
1042 u16 speed)
1043 {
1044 switch (type) {
1045 case FMAN_PORT_TYPE_RX:
1046 case FMAN_PORT_TYPE_TX:
1047 switch (speed) {
1048 case 10000:
1049 return 4;
1050 case 1000:
1051 if (major >= 6)
1052 return 2;
1053 else
1054 return 1;
1055 default:
1056 return 0;
1057 }
1058 default:
1059 return 0;
1060 }
1061 }
1062
get_dflt_num_of_tasks(u8 major,enum fman_port_type type,u16 speed)1063 static int get_dflt_num_of_tasks(u8 major, enum fman_port_type type,
1064 u16 speed)
1065 {
1066 switch (type) {
1067 case FMAN_PORT_TYPE_RX:
1068 case FMAN_PORT_TYPE_TX:
1069 switch (speed) {
1070 case 10000:
1071 return 16;
1072 case 1000:
1073 if (major >= 6)
1074 return 4;
1075 else
1076 return 3;
1077 default:
1078 return 0;
1079 }
1080 default:
1081 return 0;
1082 }
1083 }
1084
get_dflt_extra_num_of_tasks(u8 major,enum fman_port_type type,u16 speed)1085 static int get_dflt_extra_num_of_tasks(u8 major, enum fman_port_type type,
1086 u16 speed)
1087 {
1088 switch (type) {
1089 case FMAN_PORT_TYPE_RX:
1090 /* FMan V3 */
1091 if (major >= 6)
1092 return 0;
1093
1094 /* FMan V2 */
1095 if (speed == 10000)
1096 return 8;
1097 else
1098 return 2;
1099 case FMAN_PORT_TYPE_TX:
1100 default:
1101 return 0;
1102 }
1103 }
1104
get_dflt_num_of_open_dmas(u8 major,enum fman_port_type type,u16 speed)1105 static int get_dflt_num_of_open_dmas(u8 major, enum fman_port_type type,
1106 u16 speed)
1107 {
1108 int val;
1109
1110 if (major >= 6) {
1111 switch (type) {
1112 case FMAN_PORT_TYPE_TX:
1113 if (speed == 10000)
1114 val = 12;
1115 else
1116 val = 3;
1117 break;
1118 case FMAN_PORT_TYPE_RX:
1119 if (speed == 10000)
1120 val = 8;
1121 else
1122 val = 2;
1123 break;
1124 default:
1125 return 0;
1126 }
1127 } else {
1128 switch (type) {
1129 case FMAN_PORT_TYPE_TX:
1130 case FMAN_PORT_TYPE_RX:
1131 if (speed == 10000)
1132 val = 8;
1133 else
1134 val = 1;
1135 break;
1136 default:
1137 val = 0;
1138 }
1139 }
1140
1141 return val;
1142 }
1143
get_dflt_extra_num_of_open_dmas(u8 major,enum fman_port_type type,u16 speed)1144 static int get_dflt_extra_num_of_open_dmas(u8 major, enum fman_port_type type,
1145 u16 speed)
1146 {
1147 /* FMan V3 */
1148 if (major >= 6)
1149 return 0;
1150
1151 /* FMan V2 */
1152 switch (type) {
1153 case FMAN_PORT_TYPE_RX:
1154 case FMAN_PORT_TYPE_TX:
1155 if (speed == 10000)
1156 return 8;
1157 else
1158 return 1;
1159 default:
1160 return 0;
1161 }
1162 }
1163
get_dflt_num_of_fifo_bufs(u8 major,enum fman_port_type type,u16 speed)1164 static int get_dflt_num_of_fifo_bufs(u8 major, enum fman_port_type type,
1165 u16 speed)
1166 {
1167 int val;
1168
1169 if (major >= 6) {
1170 switch (type) {
1171 case FMAN_PORT_TYPE_TX:
1172 if (speed == 10000)
1173 val = 64;
1174 else
1175 val = 50;
1176 break;
1177 case FMAN_PORT_TYPE_RX:
1178 if (speed == 10000)
1179 val = 96;
1180 else
1181 val = 50;
1182 break;
1183 default:
1184 val = 0;
1185 }
1186 } else {
1187 switch (type) {
1188 case FMAN_PORT_TYPE_TX:
1189 if (speed == 10000)
1190 val = 48;
1191 else
1192 val = 44;
1193 break;
1194 case FMAN_PORT_TYPE_RX:
1195 if (speed == 10000)
1196 val = 48;
1197 else
1198 val = 45;
1199 break;
1200 default:
1201 val = 0;
1202 }
1203 }
1204
1205 return val;
1206 }
1207
set_dflt_cfg(struct fman_port * port,struct fman_port_params * port_params)1208 static void set_dflt_cfg(struct fman_port *port,
1209 struct fman_port_params *port_params)
1210 {
1211 struct fman_port_cfg *cfg = port->cfg;
1212
1213 cfg->dma_swap_data = FMAN_PORT_DMA_NO_SWAP;
1214 cfg->color = FMAN_PORT_COLOR_GREEN;
1215 cfg->rx_cut_end_bytes = DFLT_PORT_CUT_BYTES_FROM_END;
1216 cfg->rx_pri_elevation = BMI_PRIORITY_ELEVATION_LEVEL;
1217 cfg->rx_fifo_thr = BMI_FIFO_THRESHOLD;
1218 cfg->tx_fifo_low_comf_level = (5 * 1024);
1219 cfg->deq_type = FMAN_PORT_DEQ_BY_PRI;
1220 cfg->deq_prefetch_option = FMAN_PORT_DEQ_FULL_PREFETCH;
1221 cfg->tx_fifo_deq_pipeline_depth =
1222 BMI_DEQUEUE_PIPELINE_DEPTH(port->port_type, port->port_speed);
1223 cfg->deq_byte_cnt = QMI_BYTE_COUNT_LEVEL_CONTROL(port->port_type);
1224
1225 cfg->rx_pri_elevation =
1226 DFLT_PORT_RX_FIFO_PRI_ELEVATION_LEV(port->max_port_fifo_size);
1227 port->cfg->rx_fifo_thr =
1228 DFLT_PORT_RX_FIFO_THRESHOLD(port->rev_info.major,
1229 port->max_port_fifo_size);
1230
1231 if ((port->rev_info.major == 6) &&
1232 ((port->rev_info.minor == 0) || (port->rev_info.minor == 3)))
1233 cfg->errata_A006320 = true;
1234
1235 /* Excessive Threshold register - exists for pre-FMv3 chips only */
1236 if (port->rev_info.major < 6)
1237 cfg->excessive_threshold_register = true;
1238 else
1239 cfg->fmbm_tfne_has_features = true;
1240
1241 cfg->buffer_prefix_content.data_align =
1242 DFLT_PORT_BUFFER_PREFIX_CONTEXT_DATA_ALIGN;
1243 }
1244
set_rx_dflt_cfg(struct fman_port * port,struct fman_port_params * port_params)1245 static void set_rx_dflt_cfg(struct fman_port *port,
1246 struct fman_port_params *port_params)
1247 {
1248 port->cfg->discard_mask = DFLT_PORT_ERRORS_TO_DISCARD;
1249
1250 memcpy(&port->cfg->ext_buf_pools,
1251 &port_params->specific_params.rx_params.ext_buf_pools,
1252 sizeof(struct fman_ext_pools));
1253 port->cfg->err_fqid =
1254 port_params->specific_params.rx_params.err_fqid;
1255 port->cfg->dflt_fqid =
1256 port_params->specific_params.rx_params.dflt_fqid;
1257 port->cfg->pcd_base_fqid =
1258 port_params->specific_params.rx_params.pcd_base_fqid;
1259 port->cfg->pcd_fqs_count =
1260 port_params->specific_params.rx_params.pcd_fqs_count;
1261 }
1262
set_tx_dflt_cfg(struct fman_port * port,struct fman_port_params * port_params,struct fman_port_dts_params * dts_params)1263 static void set_tx_dflt_cfg(struct fman_port *port,
1264 struct fman_port_params *port_params,
1265 struct fman_port_dts_params *dts_params)
1266 {
1267 port->cfg->tx_fifo_deq_pipeline_depth =
1268 get_dflt_fifo_deq_pipeline_depth(port->rev_info.major,
1269 port->port_type,
1270 port->port_speed);
1271 port->cfg->err_fqid =
1272 port_params->specific_params.non_rx_params.err_fqid;
1273 port->cfg->deq_sp =
1274 (u8)(dts_params->qman_channel_id & QMI_DEQ_CFG_SUBPORTAL_MASK);
1275 port->cfg->dflt_fqid =
1276 port_params->specific_params.non_rx_params.dflt_fqid;
1277 port->cfg->deq_high_priority = true;
1278 }
1279
1280 /**
1281 * fman_port_config
1282 * @port: Pointer to the port structure
1283 * @params: Pointer to data structure of parameters
1284 *
1285 * Creates a descriptor for the FM PORT module.
1286 * The routine returns a pointer to the FM PORT object.
1287 * This descriptor must be passed as first parameter to all other FM PORT
1288 * function calls.
1289 * No actual initialization or configuration of FM hardware is done by this
1290 * routine.
1291 *
1292 * Return: 0 on success; Error code otherwise.
1293 */
fman_port_config(struct fman_port * port,struct fman_port_params * params)1294 int fman_port_config(struct fman_port *port, struct fman_port_params *params)
1295 {
1296 void __iomem *base_addr = port->dts_params.base_addr;
1297 int err;
1298
1299 /* Allocate the FM driver's parameters structure */
1300 port->cfg = kzalloc(sizeof(*port->cfg), GFP_KERNEL);
1301 if (!port->cfg)
1302 return -EINVAL;
1303
1304 /* Initialize FM port parameters which will be kept by the driver */
1305 port->port_type = port->dts_params.type;
1306 port->port_speed = port->dts_params.speed;
1307 port->port_id = port->dts_params.id;
1308 port->fm = port->dts_params.fman;
1309 port->ext_pools_num = (u8)8;
1310
1311 /* get FM revision */
1312 fman_get_revision(port->fm, &port->rev_info);
1313
1314 err = fill_soc_specific_params(port);
1315 if (err)
1316 goto err_port_cfg;
1317
1318 switch (port->port_type) {
1319 case FMAN_PORT_TYPE_RX:
1320 set_rx_dflt_cfg(port, params);
1321 fallthrough;
1322 case FMAN_PORT_TYPE_TX:
1323 set_tx_dflt_cfg(port, params, &port->dts_params);
1324 fallthrough;
1325 default:
1326 set_dflt_cfg(port, params);
1327 }
1328
1329 /* Continue with other parameters */
1330 /* set memory map pointers */
1331 port->bmi_regs = base_addr + BMI_PORT_REGS_OFFSET;
1332 port->qmi_regs = base_addr + QMI_PORT_REGS_OFFSET;
1333 port->hwp_regs = base_addr + HWP_PORT_REGS_OFFSET;
1334
1335 port->max_frame_length = DFLT_PORT_MAX_FRAME_LENGTH;
1336 /* resource distribution. */
1337
1338 port->fifo_bufs.num =
1339 get_dflt_num_of_fifo_bufs(port->rev_info.major, port->port_type,
1340 port->port_speed) * FMAN_BMI_FIFO_UNITS;
1341 port->fifo_bufs.extra =
1342 DFLT_PORT_EXTRA_NUM_OF_FIFO_BUFS * FMAN_BMI_FIFO_UNITS;
1343
1344 port->open_dmas.num =
1345 get_dflt_num_of_open_dmas(port->rev_info.major,
1346 port->port_type, port->port_speed);
1347 port->open_dmas.extra =
1348 get_dflt_extra_num_of_open_dmas(port->rev_info.major,
1349 port->port_type, port->port_speed);
1350 port->tasks.num =
1351 get_dflt_num_of_tasks(port->rev_info.major,
1352 port->port_type, port->port_speed);
1353 port->tasks.extra =
1354 get_dflt_extra_num_of_tasks(port->rev_info.major,
1355 port->port_type, port->port_speed);
1356
1357 /* FM_HEAVY_TRAFFIC_SEQUENCER_HANG_ERRATA_FMAN_A006981 errata
1358 * workaround
1359 */
1360 if ((port->rev_info.major == 6) && (port->rev_info.minor == 0) &&
1361 (((port->port_type == FMAN_PORT_TYPE_TX) &&
1362 (port->port_speed == 1000)))) {
1363 port->open_dmas.num = 16;
1364 port->open_dmas.extra = 0;
1365 }
1366
1367 if (port->rev_info.major >= 6 &&
1368 port->port_type == FMAN_PORT_TYPE_TX &&
1369 port->port_speed == 1000) {
1370 /* FM_WRONG_RESET_VALUES_ERRATA_FMAN_A005127 Errata
1371 * workaround
1372 */
1373 u32 reg;
1374
1375 reg = 0x00001013;
1376 iowrite32be(reg, &port->bmi_regs->tx.fmbm_tfp);
1377 }
1378
1379 return 0;
1380
1381 err_port_cfg:
1382 kfree(port->cfg);
1383 return -EINVAL;
1384 }
1385 EXPORT_SYMBOL(fman_port_config);
1386
1387 /*
1388 * fman_port_use_kg_hash
1389 * @port: A pointer to a FM Port module.
1390 * @enable: enable or disable
1391 *
1392 * Sets the HW KeyGen or the BMI as HW Parser next engine, enabling
1393 * or bypassing the KeyGen hashing of Rx traffic
1394 */
fman_port_use_kg_hash(struct fman_port * port,bool enable)1395 void fman_port_use_kg_hash(struct fman_port *port, bool enable)
1396 {
1397 if (enable)
1398 /* After the Parser frames go to KeyGen */
1399 iowrite32be(NIA_ENG_HWK, &port->bmi_regs->rx.fmbm_rfpne);
1400 else
1401 /* After the Parser frames go to BMI */
1402 iowrite32be(NIA_ENG_BMI | NIA_BMI_AC_ENQ_FRAME,
1403 &port->bmi_regs->rx.fmbm_rfpne);
1404 }
1405 EXPORT_SYMBOL(fman_port_use_kg_hash);
1406
1407 /**
1408 * fman_port_init
1409 * @port: A pointer to a FM Port module.
1410 *
1411 * Initializes the FM PORT module by defining the software structure and
1412 * configuring the hardware registers.
1413 *
1414 * Return: 0 on success; Error code otherwise.
1415 */
fman_port_init(struct fman_port * port)1416 int fman_port_init(struct fman_port *port)
1417 {
1418 struct fman_port_init_params params;
1419 struct fman_keygen *keygen;
1420 struct fman_port_cfg *cfg;
1421 int err;
1422
1423 if (is_init_done(port->cfg))
1424 return -EINVAL;
1425
1426 err = fman_sp_build_buffer_struct(&port->cfg->int_context,
1427 &port->cfg->buffer_prefix_content,
1428 &port->cfg->buf_margins,
1429 &port->buffer_offsets,
1430 &port->internal_buf_offset);
1431 if (err)
1432 return err;
1433
1434 cfg = port->cfg;
1435
1436 if (port->port_type == FMAN_PORT_TYPE_RX) {
1437 /* Call the external Buffer routine which also checks fifo
1438 * size and updates it if necessary
1439 */
1440 /* define external buffer pools and pool depletion */
1441 err = set_ext_buffer_pools(port);
1442 if (err)
1443 return err;
1444 /* check if the largest external buffer pool is large enough */
1445 if (cfg->buf_margins.start_margins + MIN_EXT_BUF_SIZE +
1446 cfg->buf_margins.end_margins >
1447 port->rx_pools_params.largest_buf_size) {
1448 dev_err(port->dev, "%s: buf_margins.start_margins (%d) + minimum buf size (64) + buf_margins.end_margins (%d) is larger than maximum external buffer size (%d)\n",
1449 __func__, cfg->buf_margins.start_margins,
1450 cfg->buf_margins.end_margins,
1451 port->rx_pools_params.largest_buf_size);
1452 return -EINVAL;
1453 }
1454 }
1455
1456 /* Call FM module routine for communicating parameters */
1457 memset(¶ms, 0, sizeof(params));
1458 params.port_id = port->port_id;
1459 params.port_type = port->port_type;
1460 params.port_speed = port->port_speed;
1461 params.num_of_tasks = (u8)port->tasks.num;
1462 params.num_of_extra_tasks = (u8)port->tasks.extra;
1463 params.num_of_open_dmas = (u8)port->open_dmas.num;
1464 params.num_of_extra_open_dmas = (u8)port->open_dmas.extra;
1465
1466 if (port->fifo_bufs.num) {
1467 err = verify_size_of_fifo(port);
1468 if (err)
1469 return err;
1470 }
1471 params.size_of_fifo = port->fifo_bufs.num;
1472 params.extra_size_of_fifo = port->fifo_bufs.extra;
1473 params.deq_pipeline_depth = port->cfg->tx_fifo_deq_pipeline_depth;
1474 params.max_frame_length = port->max_frame_length;
1475
1476 err = fman_set_port_params(port->fm, ¶ms);
1477 if (err)
1478 return err;
1479
1480 err = init_low_level_driver(port);
1481 if (err)
1482 return err;
1483
1484 if (port->cfg->pcd_fqs_count) {
1485 keygen = port->dts_params.fman->keygen;
1486 err = keygen_port_hashing_init(keygen, port->port_id,
1487 port->cfg->pcd_base_fqid,
1488 port->cfg->pcd_fqs_count);
1489 if (err)
1490 return err;
1491
1492 fman_port_use_kg_hash(port, true);
1493 }
1494
1495 kfree(port->cfg);
1496 port->cfg = NULL;
1497
1498 return 0;
1499 }
1500 EXPORT_SYMBOL(fman_port_init);
1501
1502 /**
1503 * fman_port_cfg_buf_prefix_content
1504 * @port: A pointer to a FM Port module.
1505 * @buffer_prefix_content: A structure of parameters describing
1506 * the structure of the buffer.
1507 * Out parameter:
1508 * Start margin - offset of data from
1509 * start of external buffer.
1510 * Defines the structure, size and content of the application buffer.
1511 * The prefix, in Tx ports, if 'pass_prs_result', the application should set
1512 * a value to their offsets in the prefix of the FM will save the first
1513 * 'priv_data_size', than, depending on 'pass_prs_result' and
1514 * 'pass_time_stamp', copy parse result and timeStamp, and the packet itself
1515 * (in this order), to the application buffer, and to offset.
1516 * Calling this routine changes the buffer margins definitions in the internal
1517 * driver data base from its default configuration:
1518 * Data size: [DEFAULT_PORT_BUFFER_PREFIX_CONTENT_PRIV_DATA_SIZE]
1519 * Pass Parser result: [DEFAULT_PORT_BUFFER_PREFIX_CONTENT_PASS_PRS_RESULT].
1520 * Pass timestamp: [DEFAULT_PORT_BUFFER_PREFIX_CONTENT_PASS_TIME_STAMP].
1521 * May be used for all ports
1522 *
1523 * Allowed only following fman_port_config() and before fman_port_init().
1524 *
1525 * Return: 0 on success; Error code otherwise.
1526 */
fman_port_cfg_buf_prefix_content(struct fman_port * port,struct fman_buffer_prefix_content * buffer_prefix_content)1527 int fman_port_cfg_buf_prefix_content(struct fman_port *port,
1528 struct fman_buffer_prefix_content *
1529 buffer_prefix_content)
1530 {
1531 if (is_init_done(port->cfg))
1532 return -EINVAL;
1533
1534 memcpy(&port->cfg->buffer_prefix_content,
1535 buffer_prefix_content,
1536 sizeof(struct fman_buffer_prefix_content));
1537 /* if data_align was not initialized by user,
1538 * we return to driver's default
1539 */
1540 if (!port->cfg->buffer_prefix_content.data_align)
1541 port->cfg->buffer_prefix_content.data_align =
1542 DFLT_PORT_BUFFER_PREFIX_CONTEXT_DATA_ALIGN;
1543
1544 return 0;
1545 }
1546 EXPORT_SYMBOL(fman_port_cfg_buf_prefix_content);
1547
1548 /**
1549 * fman_port_disable
1550 * @port: A pointer to a FM Port module.
1551 *
1552 * Gracefully disable an FM port. The port will not start new tasks after all
1553 * tasks associated with the port are terminated.
1554 *
1555 * This is a blocking routine, it returns after port is gracefully stopped,
1556 * i.e. the port will not except new frames, but it will finish all frames
1557 * or tasks which were already began.
1558 * Allowed only following fman_port_init().
1559 *
1560 * Return: 0 on success; Error code otherwise.
1561 */
fman_port_disable(struct fman_port * port)1562 int fman_port_disable(struct fman_port *port)
1563 {
1564 u32 __iomem *bmi_cfg_reg, *bmi_status_reg;
1565 u32 tmp;
1566 bool rx_port, failure = false;
1567 int count;
1568
1569 if (!is_init_done(port->cfg))
1570 return -EINVAL;
1571
1572 switch (port->port_type) {
1573 case FMAN_PORT_TYPE_RX:
1574 bmi_cfg_reg = &port->bmi_regs->rx.fmbm_rcfg;
1575 bmi_status_reg = &port->bmi_regs->rx.fmbm_rst;
1576 rx_port = true;
1577 break;
1578 case FMAN_PORT_TYPE_TX:
1579 bmi_cfg_reg = &port->bmi_regs->tx.fmbm_tcfg;
1580 bmi_status_reg = &port->bmi_regs->tx.fmbm_tst;
1581 rx_port = false;
1582 break;
1583 default:
1584 return -EINVAL;
1585 }
1586
1587 /* Disable QMI */
1588 if (!rx_port) {
1589 tmp = ioread32be(&port->qmi_regs->fmqm_pnc) & ~QMI_PORT_CFG_EN;
1590 iowrite32be(tmp, &port->qmi_regs->fmqm_pnc);
1591
1592 /* Wait for QMI to finish FD handling */
1593 count = 100;
1594 do {
1595 udelay(10);
1596 tmp = ioread32be(&port->qmi_regs->fmqm_pns);
1597 } while ((tmp & QMI_PORT_STATUS_DEQ_FD_BSY) && --count);
1598
1599 if (count == 0) {
1600 /* Timeout */
1601 failure = true;
1602 }
1603 }
1604
1605 /* Disable BMI */
1606 tmp = ioread32be(bmi_cfg_reg) & ~BMI_PORT_CFG_EN;
1607 iowrite32be(tmp, bmi_cfg_reg);
1608
1609 /* Wait for graceful stop end */
1610 count = 500;
1611 do {
1612 udelay(10);
1613 tmp = ioread32be(bmi_status_reg);
1614 } while ((tmp & BMI_PORT_STATUS_BSY) && --count);
1615
1616 if (count == 0) {
1617 /* Timeout */
1618 failure = true;
1619 }
1620
1621 if (failure)
1622 dev_dbg(port->dev, "%s: FMan Port[%d]: BMI or QMI is Busy. Port forced down\n",
1623 __func__, port->port_id);
1624
1625 return 0;
1626 }
1627 EXPORT_SYMBOL(fman_port_disable);
1628
1629 /**
1630 * fman_port_enable
1631 * @port: A pointer to a FM Port module.
1632 *
1633 * A runtime routine provided to allow disable/enable of port.
1634 *
1635 * Allowed only following fman_port_init().
1636 *
1637 * Return: 0 on success; Error code otherwise.
1638 */
fman_port_enable(struct fman_port * port)1639 int fman_port_enable(struct fman_port *port)
1640 {
1641 u32 __iomem *bmi_cfg_reg;
1642 u32 tmp;
1643 bool rx_port;
1644
1645 if (!is_init_done(port->cfg))
1646 return -EINVAL;
1647
1648 switch (port->port_type) {
1649 case FMAN_PORT_TYPE_RX:
1650 bmi_cfg_reg = &port->bmi_regs->rx.fmbm_rcfg;
1651 rx_port = true;
1652 break;
1653 case FMAN_PORT_TYPE_TX:
1654 bmi_cfg_reg = &port->bmi_regs->tx.fmbm_tcfg;
1655 rx_port = false;
1656 break;
1657 default:
1658 return -EINVAL;
1659 }
1660
1661 /* Enable QMI */
1662 if (!rx_port) {
1663 tmp = ioread32be(&port->qmi_regs->fmqm_pnc) | QMI_PORT_CFG_EN;
1664 iowrite32be(tmp, &port->qmi_regs->fmqm_pnc);
1665 }
1666
1667 /* Enable BMI */
1668 tmp = ioread32be(bmi_cfg_reg) | BMI_PORT_CFG_EN;
1669 iowrite32be(tmp, bmi_cfg_reg);
1670
1671 return 0;
1672 }
1673 EXPORT_SYMBOL(fman_port_enable);
1674
1675 /**
1676 * fman_port_bind
1677 * @dev: FMan Port OF device pointer
1678 *
1679 * Bind to a specific FMan Port.
1680 *
1681 * Allowed only after the port was created.
1682 *
1683 * Return: A pointer to the FMan port device.
1684 */
fman_port_bind(struct device * dev)1685 struct fman_port *fman_port_bind(struct device *dev)
1686 {
1687 return (struct fman_port *)(dev_get_drvdata(get_device(dev)));
1688 }
1689 EXPORT_SYMBOL(fman_port_bind);
1690
1691 /**
1692 * fman_port_get_qman_channel_id
1693 * @port: Pointer to the FMan port devuce
1694 *
1695 * Get the QMan channel ID for the specific port
1696 *
1697 * Return: QMan channel ID
1698 */
fman_port_get_qman_channel_id(struct fman_port * port)1699 u32 fman_port_get_qman_channel_id(struct fman_port *port)
1700 {
1701 return port->dts_params.qman_channel_id;
1702 }
1703 EXPORT_SYMBOL(fman_port_get_qman_channel_id);
1704
1705 /**
1706 * fman_port_get_device
1707 * @port: Pointer to the FMan port device
1708 *
1709 * Get the 'struct device' associated to the specified FMan port device
1710 *
1711 * Return: pointer to associated 'struct device'
1712 */
fman_port_get_device(struct fman_port * port)1713 struct device *fman_port_get_device(struct fman_port *port)
1714 {
1715 return port->dev;
1716 }
1717 EXPORT_SYMBOL(fman_port_get_device);
1718
fman_port_get_hash_result_offset(struct fman_port * port,u32 * offset)1719 int fman_port_get_hash_result_offset(struct fman_port *port, u32 *offset)
1720 {
1721 if (port->buffer_offsets.hash_result_offset == ILLEGAL_BASE)
1722 return -EINVAL;
1723
1724 *offset = port->buffer_offsets.hash_result_offset;
1725
1726 return 0;
1727 }
1728 EXPORT_SYMBOL(fman_port_get_hash_result_offset);
1729
fman_port_get_tstamp(struct fman_port * port,const void * data,u64 * tstamp)1730 int fman_port_get_tstamp(struct fman_port *port, const void *data, u64 *tstamp)
1731 {
1732 if (port->buffer_offsets.time_stamp_offset == ILLEGAL_BASE)
1733 return -EINVAL;
1734
1735 *tstamp = be64_to_cpu(*(__be64 *)(data +
1736 port->buffer_offsets.time_stamp_offset));
1737
1738 return 0;
1739 }
1740 EXPORT_SYMBOL(fman_port_get_tstamp);
1741
fman_port_probe(struct platform_device * of_dev)1742 static int fman_port_probe(struct platform_device *of_dev)
1743 {
1744 struct fman_port *port;
1745 struct fman *fman;
1746 struct device_node *fm_node, *port_node;
1747 struct platform_device *fm_pdev;
1748 struct resource res;
1749 struct resource *dev_res;
1750 u32 val;
1751 int err = 0, lenp;
1752 enum fman_port_type port_type;
1753 u16 port_speed;
1754 u8 port_id;
1755
1756 port = kzalloc(sizeof(*port), GFP_KERNEL);
1757 if (!port)
1758 return -ENOMEM;
1759
1760 port->dev = &of_dev->dev;
1761
1762 port_node = of_node_get(of_dev->dev.of_node);
1763
1764 /* Get the FM node */
1765 fm_node = of_get_parent(port_node);
1766 if (!fm_node) {
1767 dev_err(port->dev, "%s: of_get_parent() failed\n", __func__);
1768 err = -ENODEV;
1769 goto return_err;
1770 }
1771
1772 fm_pdev = of_find_device_by_node(fm_node);
1773 of_node_put(fm_node);
1774 if (!fm_pdev) {
1775 err = -EINVAL;
1776 goto return_err;
1777 }
1778
1779 fman = dev_get_drvdata(&fm_pdev->dev);
1780 if (!fman) {
1781 err = -EINVAL;
1782 goto put_device;
1783 }
1784
1785 err = of_property_read_u32(port_node, "cell-index", &val);
1786 if (err) {
1787 dev_err(port->dev, "%s: reading cell-index for %pOF failed\n",
1788 __func__, port_node);
1789 err = -EINVAL;
1790 goto put_device;
1791 }
1792 port_id = (u8)val;
1793 port->dts_params.id = port_id;
1794
1795 if (of_device_is_compatible(port_node, "fsl,fman-v3-port-tx")) {
1796 port_type = FMAN_PORT_TYPE_TX;
1797 port_speed = 1000;
1798 if (of_find_property(port_node, "fsl,fman-10g-port", &lenp))
1799 port_speed = 10000;
1800
1801 } else if (of_device_is_compatible(port_node, "fsl,fman-v2-port-tx")) {
1802 if (port_id >= TX_10G_PORT_BASE)
1803 port_speed = 10000;
1804 else
1805 port_speed = 1000;
1806 port_type = FMAN_PORT_TYPE_TX;
1807
1808 } else if (of_device_is_compatible(port_node, "fsl,fman-v3-port-rx")) {
1809 port_type = FMAN_PORT_TYPE_RX;
1810 port_speed = 1000;
1811 if (of_find_property(port_node, "fsl,fman-10g-port", &lenp))
1812 port_speed = 10000;
1813
1814 } else if (of_device_is_compatible(port_node, "fsl,fman-v2-port-rx")) {
1815 if (port_id >= RX_10G_PORT_BASE)
1816 port_speed = 10000;
1817 else
1818 port_speed = 1000;
1819 port_type = FMAN_PORT_TYPE_RX;
1820
1821 } else {
1822 dev_err(port->dev, "%s: Illegal port type\n", __func__);
1823 err = -EINVAL;
1824 goto put_device;
1825 }
1826
1827 port->dts_params.type = port_type;
1828 port->dts_params.speed = port_speed;
1829
1830 if (port_type == FMAN_PORT_TYPE_TX) {
1831 u32 qman_channel_id;
1832
1833 qman_channel_id = fman_get_qman_channel_id(fman, port_id);
1834 if (qman_channel_id == 0) {
1835 dev_err(port->dev, "%s: incorrect qman-channel-id\n",
1836 __func__);
1837 err = -EINVAL;
1838 goto put_device;
1839 }
1840 port->dts_params.qman_channel_id = qman_channel_id;
1841 }
1842
1843 err = of_address_to_resource(port_node, 0, &res);
1844 if (err < 0) {
1845 dev_err(port->dev, "%s: of_address_to_resource() failed\n",
1846 __func__);
1847 err = -ENOMEM;
1848 goto put_device;
1849 }
1850
1851 port->dts_params.fman = fman;
1852
1853 of_node_put(port_node);
1854
1855 dev_res = __devm_request_region(port->dev, &res, res.start,
1856 resource_size(&res), "fman-port");
1857 if (!dev_res) {
1858 dev_err(port->dev, "%s: __devm_request_region() failed\n",
1859 __func__);
1860 err = -EINVAL;
1861 goto free_port;
1862 }
1863
1864 port->dts_params.base_addr = devm_ioremap(port->dev, res.start,
1865 resource_size(&res));
1866 if (!port->dts_params.base_addr)
1867 dev_err(port->dev, "%s: devm_ioremap() failed\n", __func__);
1868
1869 dev_set_drvdata(&of_dev->dev, port);
1870
1871 return 0;
1872
1873 put_device:
1874 put_device(&fm_pdev->dev);
1875 return_err:
1876 of_node_put(port_node);
1877 free_port:
1878 kfree(port);
1879 return err;
1880 }
1881
1882 static const struct of_device_id fman_port_match[] = {
1883 {.compatible = "fsl,fman-v3-port-rx"},
1884 {.compatible = "fsl,fman-v2-port-rx"},
1885 {.compatible = "fsl,fman-v3-port-tx"},
1886 {.compatible = "fsl,fman-v2-port-tx"},
1887 {}
1888 };
1889
1890 MODULE_DEVICE_TABLE(of, fman_port_match);
1891
1892 static struct platform_driver fman_port_driver = {
1893 .driver = {
1894 .name = "fsl-fman-port",
1895 .of_match_table = fman_port_match,
1896 },
1897 .probe = fman_port_probe,
1898 };
1899
fman_port_load(void)1900 static int __init fman_port_load(void)
1901 {
1902 int err;
1903
1904 pr_debug("FSL DPAA FMan driver\n");
1905
1906 err = platform_driver_register(&fman_port_driver);
1907 if (err < 0)
1908 pr_err("Error, platform_driver_register() = %d\n", err);
1909
1910 return err;
1911 }
1912 module_init(fman_port_load);
1913
fman_port_unload(void)1914 static void __exit fman_port_unload(void)
1915 {
1916 platform_driver_unregister(&fman_port_driver);
1917 }
1918 module_exit(fman_port_unload);
1919
1920 MODULE_LICENSE("Dual BSD/GPL");
1921 MODULE_DESCRIPTION("Freescale DPAA Frame Manager Port driver");
1922