1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Marvell Octeon EP (EndPoint) Ethernet Driver
3 *
4 * Copyright (C) 2020 Marvell.
5 *
6 */
7
8 #ifndef _OCTEP_MAIN_H_
9 #define _OCTEP_MAIN_H_
10
11 #include "octep_tx.h"
12 #include "octep_rx.h"
13 #include "octep_ctrl_mbox.h"
14
15 #define OCTEP_DRV_NAME "octeon_ep"
16 #define OCTEP_DRV_STRING "Marvell Octeon EndPoint NIC Driver"
17
18 #define OCTEP_PCIID_CN93_PF 0xB200177d
19 #define OCTEP_PCIID_CN93_VF 0xB203177d
20
21 #define OCTEP_PCI_DEVICE_ID_CN98_PF 0xB100
22 #define OCTEP_PCI_DEVICE_ID_CN93_PF 0xB200
23 #define OCTEP_PCI_DEVICE_ID_CN93_VF 0xB203
24
25 #define OCTEP_PCI_DEVICE_ID_CNF95N_PF 0xB400 //95N PF
26
27 #define OCTEP_PCI_DEVICE_ID_CN10KA_PF 0xB900 //CN10KA PF
28 #define OCTEP_PCI_DEVICE_ID_CNF10KA_PF 0xBA00 //CNF10KA PF
29 #define OCTEP_PCI_DEVICE_ID_CNF10KB_PF 0xBC00 //CNF10KB PF
30 #define OCTEP_PCI_DEVICE_ID_CN10KB_PF 0xBD00 //CN10KB PF
31
32 #define OCTEP_MAX_QUEUES 63
33 #define OCTEP_MAX_IQ OCTEP_MAX_QUEUES
34 #define OCTEP_MAX_OQ OCTEP_MAX_QUEUES
35 #define OCTEP_MAX_VF 64
36
37 #define OCTEP_MAX_MSIX_VECTORS OCTEP_MAX_OQ
38
39 /* Flags to disable and enable Interrupts */
40 #define OCTEP_INPUT_INTR (1)
41 #define OCTEP_OUTPUT_INTR (2)
42 #define OCTEP_MBOX_INTR (4)
43 #define OCTEP_ALL_INTR 0xff
44
45 #define OCTEP_IQ_INTR_RESEND_BIT 59
46 #define OCTEP_OQ_INTR_RESEND_BIT 59
47
48 #define OCTEP_MMIO_REGIONS 3
49
50 #define IQ_INSTR_PENDING(iq) ({ typeof(iq) iq__ = (iq); \
51 ((iq__)->host_write_index - (iq__)->flush_index) & \
52 (iq__)->ring_size_mask; \
53 })
54 #define IQ_INSTR_SPACE(iq) ({ typeof(iq) iq_ = (iq); \
55 (iq_)->max_count - IQ_INSTR_PENDING(iq_); \
56 })
57
58 /* PCI address space mapping information.
59 * Each of the 3 address spaces given by BAR0, BAR2 and BAR4 of
60 * Octeon gets mapped to different physical address spaces in
61 * the kernel.
62 */
63 struct octep_mmio {
64 /* The physical address to which the PCI address space is mapped. */
65 u8 __iomem *hw_addr;
66
67 /* Flag indicating the mapping was successful. */
68 int mapped;
69 };
70
71 struct octep_pci_win_regs {
72 u8 __iomem *pci_win_wr_addr;
73 u8 __iomem *pci_win_rd_addr;
74 u8 __iomem *pci_win_wr_data;
75 u8 __iomem *pci_win_rd_data;
76 };
77
78 struct octep_hw_ops {
79 void (*setup_iq_regs)(struct octep_device *oct, int q);
80 void (*setup_oq_regs)(struct octep_device *oct, int q);
81 void (*setup_mbox_regs)(struct octep_device *oct, int mbox);
82
83 irqreturn_t (*mbox_intr_handler)(void *ioq_vector);
84 irqreturn_t (*oei_intr_handler)(void *ioq_vector);
85 irqreturn_t (*ire_intr_handler)(void *ioq_vector);
86 irqreturn_t (*ore_intr_handler)(void *ioq_vector);
87 irqreturn_t (*vfire_intr_handler)(void *ioq_vector);
88 irqreturn_t (*vfore_intr_handler)(void *ioq_vector);
89 irqreturn_t (*dma_intr_handler)(void *ioq_vector);
90 irqreturn_t (*dma_vf_intr_handler)(void *ioq_vector);
91 irqreturn_t (*pp_vf_intr_handler)(void *ioq_vector);
92 irqreturn_t (*misc_intr_handler)(void *ioq_vector);
93 irqreturn_t (*rsvd_intr_handler)(void *ioq_vector);
94 irqreturn_t (*ioq_intr_handler)(void *ioq_vector);
95 int (*soft_reset)(struct octep_device *oct);
96 void (*reinit_regs)(struct octep_device *oct);
97 u32 (*update_iq_read_idx)(struct octep_iq *iq);
98
99 void (*enable_interrupts)(struct octep_device *oct);
100 void (*disable_interrupts)(struct octep_device *oct);
101 void (*poll_non_ioq_interrupts)(struct octep_device *oct);
102
103 void (*enable_io_queues)(struct octep_device *oct);
104 void (*disable_io_queues)(struct octep_device *oct);
105 void (*enable_iq)(struct octep_device *oct, int q);
106 void (*disable_iq)(struct octep_device *oct, int q);
107 void (*enable_oq)(struct octep_device *oct, int q);
108 void (*disable_oq)(struct octep_device *oct, int q);
109 void (*reset_io_queues)(struct octep_device *oct);
110 void (*dump_registers)(struct octep_device *oct);
111 };
112
113 /* Octeon mailbox data */
114 struct octep_mbox_data {
115 u32 cmd;
116 u32 total_len;
117 u32 recv_len;
118 u32 rsvd;
119 u64 *data;
120 };
121
122 #define MAX_VF_PF_MBOX_DATA_SIZE 384
123 /* wrappers around work structs */
124 struct octep_pfvf_mbox_wk {
125 struct work_struct work;
126 void *ctxptr;
127 u64 ctxul;
128 };
129
130 /* Octeon device mailbox */
131 struct octep_mbox {
132 /* A mutex to protect access to this q_mbox. */
133 struct mutex lock;
134 u32 vf_id;
135 u32 config_data_index;
136 u32 message_len;
137 u8 __iomem *pf_vf_data_reg;
138 u8 __iomem *vf_pf_data_reg;
139 struct octep_pfvf_mbox_wk wk;
140 struct octep_device *oct;
141 struct octep_mbox_data mbox_data;
142 u8 config_data[MAX_VF_PF_MBOX_DATA_SIZE];
143 };
144
145 /* Tx/Rx queue vector per interrupt. */
146 struct octep_ioq_vector {
147 char name[OCTEP_MSIX_NAME_SIZE];
148 struct napi_struct napi;
149 struct octep_device *octep_dev;
150 struct octep_iq *iq;
151 struct octep_oq *oq;
152 cpumask_t affinity_mask;
153 };
154
155 /* Octeon hardware/firmware offload capability flags. */
156 #define OCTEP_CAP_TX_CHECKSUM BIT(0)
157 #define OCTEP_CAP_RX_CHECKSUM BIT(1)
158 #define OCTEP_CAP_TSO BIT(2)
159
160 /* Link modes */
161 enum octep_link_mode_bit_indices {
162 OCTEP_LINK_MODE_10GBASE_T = 0,
163 OCTEP_LINK_MODE_10GBASE_R,
164 OCTEP_LINK_MODE_10GBASE_CR,
165 OCTEP_LINK_MODE_10GBASE_KR,
166 OCTEP_LINK_MODE_10GBASE_LR,
167 OCTEP_LINK_MODE_10GBASE_SR,
168 OCTEP_LINK_MODE_25GBASE_CR,
169 OCTEP_LINK_MODE_25GBASE_KR,
170 OCTEP_LINK_MODE_25GBASE_SR,
171 OCTEP_LINK_MODE_40GBASE_CR4,
172 OCTEP_LINK_MODE_40GBASE_KR4,
173 OCTEP_LINK_MODE_40GBASE_LR4,
174 OCTEP_LINK_MODE_40GBASE_SR4,
175 OCTEP_LINK_MODE_50GBASE_CR2,
176 OCTEP_LINK_MODE_50GBASE_KR2,
177 OCTEP_LINK_MODE_50GBASE_SR2,
178 OCTEP_LINK_MODE_50GBASE_CR,
179 OCTEP_LINK_MODE_50GBASE_KR,
180 OCTEP_LINK_MODE_50GBASE_LR,
181 OCTEP_LINK_MODE_50GBASE_SR,
182 OCTEP_LINK_MODE_100GBASE_CR4,
183 OCTEP_LINK_MODE_100GBASE_KR4,
184 OCTEP_LINK_MODE_100GBASE_LR4,
185 OCTEP_LINK_MODE_100GBASE_SR4,
186 OCTEP_LINK_MODE_NBITS
187 };
188
189 /* Hardware interface link state information. */
190 struct octep_iface_link_info {
191 /* Bitmap of Supported link speeds/modes. */
192 u64 supported_modes;
193
194 /* Bitmap of Advertised link speeds/modes. */
195 u64 advertised_modes;
196
197 /* Negotiated link speed in Mbps. */
198 u32 speed;
199
200 /* MTU */
201 u16 mtu;
202
203 /* Autonegotation state. */
204 #define OCTEP_LINK_MODE_AUTONEG_SUPPORTED BIT(0)
205 #define OCTEP_LINK_MODE_AUTONEG_ADVERTISED BIT(1)
206 u8 autoneg;
207
208 /* Pause frames setting. */
209 #define OCTEP_LINK_MODE_PAUSE_SUPPORTED BIT(0)
210 #define OCTEP_LINK_MODE_PAUSE_ADVERTISED BIT(1)
211 u8 pause;
212
213 /* Admin state of the link (ifconfig <iface> up/down */
214 u8 admin_up;
215
216 /* Operational state of the link: physical link is up down */
217 u8 oper_up;
218 };
219
220 /* The Octeon VF device specific info data structure.*/
221 struct octep_pfvf_info {
222 u8 mac_addr[ETH_ALEN];
223 u32 mbox_version;
224 };
225
226 /* The Octeon device specific private data structure.
227 * Each Octeon device has this structure to represent all its components.
228 */
229 struct octep_device {
230 struct octep_config *conf;
231
232 /* Octeon Chip type. */
233 u16 chip_id;
234 u16 rev_id;
235
236 /* Device capabilities enabled */
237 u64 caps_enabled;
238 /* Device capabilities supported */
239 u64 caps_supported;
240
241 /* Pointer to basic Linux device */
242 struct device *dev;
243 /* Linux PCI device pointer */
244 struct pci_dev *pdev;
245 /* Netdev corresponding to the Octeon device */
246 struct net_device *netdev;
247
248 /* memory mapped io range */
249 struct octep_mmio mmio[OCTEP_MMIO_REGIONS];
250
251 /* MAC address */
252 u8 mac_addr[ETH_ALEN];
253
254 /* Tx queues (IQ: Instruction Queue) */
255 u16 num_iqs;
256
257 /* Pointers to Octeon Tx queues */
258 struct octep_iq *iq[OCTEP_MAX_IQ];
259
260 /* Rx queues (OQ: Output Queue) */
261 u16 num_oqs;
262 /* Pointers to Octeon Rx queues */
263 struct octep_oq *oq[OCTEP_MAX_OQ];
264
265 /* Hardware port number of the PCIe interface */
266 u16 pcie_port;
267
268 /* PCI Window registers to access some hardware CSRs */
269 struct octep_pci_win_regs pci_win_regs;
270 /* Hardware operations */
271 struct octep_hw_ops hw_ops;
272
273 /* IRQ info */
274 u16 num_irqs;
275 u16 num_non_ioq_irqs;
276 char *non_ioq_irq_names;
277 struct msix_entry *msix_entries;
278 /* IOq information of it's corresponding MSI-X interrupt. */
279 struct octep_ioq_vector *ioq_vector[OCTEP_MAX_QUEUES];
280
281 /* Hardware Interface Tx statistics */
282 struct octep_iface_tx_stats iface_tx_stats;
283 /* Hardware Interface Rx statistics */
284 struct octep_iface_rx_stats iface_rx_stats;
285
286 /* Hardware Interface Link info like supported modes, aneg support */
287 struct octep_iface_link_info link_info;
288
289 /* Mailbox to talk to VFs */
290 struct octep_mbox *mbox[OCTEP_MAX_VF];
291 /* VFs info */
292 struct octep_pfvf_info vf_info[OCTEP_MAX_VF];
293
294 /* Work entry to handle Tx timeout */
295 struct work_struct tx_timeout_task;
296
297 /* control mbox over pf */
298 struct octep_ctrl_mbox ctrl_mbox;
299
300 /* offset for iface stats */
301 u32 ctrl_mbox_ifstats_offset;
302
303 /* Work entry to handle ctrl mbox interrupt */
304 struct work_struct ctrl_mbox_task;
305 /* Wait queue for host to firmware requests */
306 wait_queue_head_t ctrl_req_wait_q;
307 /* List of objects waiting for h2f response */
308 struct list_head ctrl_req_wait_list;
309
310 /* Enable non-ioq interrupt polling */
311 bool poll_non_ioq_intr;
312 /* Work entry to poll non-ioq interrupts */
313 struct delayed_work intr_poll_task;
314
315 /* Firmware heartbeat timer */
316 struct timer_list hb_timer;
317 /* Firmware heartbeat miss count tracked by timer */
318 atomic_t hb_miss_cnt;
319 /* Task to reset device on heartbeat miss */
320 struct delayed_work hb_task;
321 };
322
OCTEP_MAJOR_REV(struct octep_device * oct)323 static inline u16 OCTEP_MAJOR_REV(struct octep_device *oct)
324 {
325 u16 rev = (oct->rev_id & 0xC) >> 2;
326
327 return (rev == 0) ? 1 : rev;
328 }
329
OCTEP_MINOR_REV(struct octep_device * oct)330 static inline u16 OCTEP_MINOR_REV(struct octep_device *oct)
331 {
332 return (oct->rev_id & 0x3);
333 }
334
335 /* Octeon CSR read/write access APIs */
336 #define octep_write_csr(octep_dev, reg_off, value) \
337 writel(value, (octep_dev)->mmio[0].hw_addr + (reg_off))
338
339 #define octep_write_csr64(octep_dev, reg_off, val64) \
340 writeq(val64, (octep_dev)->mmio[0].hw_addr + (reg_off))
341
342 #define octep_read_csr(octep_dev, reg_off) \
343 readl((octep_dev)->mmio[0].hw_addr + (reg_off))
344
345 #define octep_read_csr64(octep_dev, reg_off) \
346 readq((octep_dev)->mmio[0].hw_addr + (reg_off))
347
348 /* Read windowed register.
349 * @param oct - pointer to the Octeon device.
350 * @param addr - Address of the register to read.
351 *
352 * This routine is called to read from the indirectly accessed
353 * Octeon registers that are visible through a PCI BAR0 mapped window
354 * register.
355 * @return - 64 bit value read from the register.
356 */
357 static inline u64
OCTEP_PCI_WIN_READ(struct octep_device * oct,u64 addr)358 OCTEP_PCI_WIN_READ(struct octep_device *oct, u64 addr)
359 {
360 u64 val64;
361
362 addr |= 1ull << 53; /* read 8 bytes */
363 writeq(addr, oct->pci_win_regs.pci_win_rd_addr);
364 val64 = readq(oct->pci_win_regs.pci_win_rd_data);
365
366 dev_dbg(&oct->pdev->dev,
367 "%s: reg: 0x%016llx val: 0x%016llx\n", __func__, addr, val64);
368
369 return val64;
370 }
371
372 /* Write windowed register.
373 * @param oct - pointer to the Octeon device.
374 * @param addr - Address of the register to write
375 * @param val - Value to write
376 *
377 * This routine is called to write to the indirectly accessed
378 * Octeon registers that are visible through a PCI BAR0 mapped window
379 * register.
380 * @return Nothing.
381 */
382 static inline void
OCTEP_PCI_WIN_WRITE(struct octep_device * oct,u64 addr,u64 val)383 OCTEP_PCI_WIN_WRITE(struct octep_device *oct, u64 addr, u64 val)
384 {
385 writeq(addr, oct->pci_win_regs.pci_win_wr_addr);
386 writeq(val, oct->pci_win_regs.pci_win_wr_data);
387
388 dev_dbg(&oct->pdev->dev,
389 "%s: reg: 0x%016llx val: 0x%016llx\n", __func__, addr, val);
390 }
391
392 extern struct workqueue_struct *octep_wq;
393
394 int octep_device_setup(struct octep_device *oct);
395 int octep_setup_iqs(struct octep_device *oct);
396 void octep_free_iqs(struct octep_device *oct);
397 void octep_clean_iqs(struct octep_device *oct);
398 int octep_setup_oqs(struct octep_device *oct);
399 void octep_free_oqs(struct octep_device *oct);
400 void octep_oq_dbell_init(struct octep_device *oct);
401 void octep_device_setup_cn93_pf(struct octep_device *oct);
402 void octep_device_setup_cnxk_pf(struct octep_device *oct);
403 int octep_iq_process_completions(struct octep_iq *iq, u16 budget);
404 int octep_oq_process_rx(struct octep_oq *oq, int budget);
405 void octep_set_ethtool_ops(struct net_device *netdev);
406
407 #endif /* _OCTEP_MAIN_H_ */
408