1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2011 Solarflare Communications Inc.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
14 #include <linux/net_tstamp.h>
15 #include <linux/i2c-algo-bit.h>
16 #include "net_driver.h"
22 * Falcon hardware control
26 EFX_REV_FALCON_A0 = 0,
27 EFX_REV_FALCON_A1 = 1,
28 EFX_REV_FALCON_B0 = 2,
32 static inline int efx_nic_rev(struct efx_nic *efx)
34 return efx->type->revision;
37 extern u32 efx_nic_fpga_ver(struct efx_nic *efx);
39 /* NIC has two interlinked PCI functions for the same port. */
40 static inline bool efx_nic_is_dual_func(struct efx_nic *efx)
42 return efx_nic_rev(efx) < EFX_REV_FALCON_B0;
47 PHY_TYPE_TXC43128 = 1,
50 PHY_TYPE_QT2022C2 = 4,
52 PHY_TYPE_SFT9001A = 8,
54 PHY_TYPE_SFT9001B = 10,
57 #define FALCON_XMAC_LOOPBACKS \
58 ((1 << LOOPBACK_XGMII) | \
59 (1 << LOOPBACK_XGXS) | \
62 #define FALCON_GMAC_LOOPBACKS \
65 /* Alignment of PCIe DMA boundaries (4KB) */
66 #define EFX_PAGE_SIZE 4096
67 /* Size and alignment of buffer table entries (same) */
68 #define EFX_BUF_SIZE EFX_PAGE_SIZE
71 * struct falcon_board_type - board operations and type information
72 * @id: Board type id, as found in NVRAM
73 * @init: Allocate resources and initialise peripheral hardware
74 * @init_phy: Do board-specific PHY initialisation
75 * @fini: Shut down hardware and free resources
76 * @set_id_led: Set state of identifying LED or revert to automatic function
77 * @monitor: Board-specific health check function
79 struct falcon_board_type {
81 int (*init) (struct efx_nic *nic);
82 void (*init_phy) (struct efx_nic *efx);
83 void (*fini) (struct efx_nic *nic);
84 void (*set_id_led) (struct efx_nic *efx, enum efx_led_mode mode);
85 int (*monitor) (struct efx_nic *nic);
89 * struct falcon_board - board information
90 * @type: Type of board
91 * @major: Major rev. ('A', 'B' ...)
92 * @minor: Minor rev. (0, 1, ...)
93 * @i2c_adap: I2C adapter for on-board peripherals
94 * @i2c_data: Data for bit-banging algorithm
95 * @hwmon_client: I2C client for hardware monitor
96 * @ioexp_client: I2C client for power/port control
99 const struct falcon_board_type *type;
102 struct i2c_adapter i2c_adap;
103 struct i2c_algo_bit_data i2c_data;
104 struct i2c_client *hwmon_client, *ioexp_client;
108 * struct falcon_nic_data - Falcon NIC state
109 * @pci_dev2: Secondary function of Falcon A
110 * @board: Board state and functions
111 * @stats_disable_count: Nest count for disabling statistics fetches
112 * @stats_pending: Is there a pending DMA of MAC statistics.
113 * @stats_timer: A timer for regularly fetching MAC statistics.
114 * @stats_dma_done: Pointer to the flag which indicates DMA completion.
115 * @spi_flash: SPI flash device
116 * @spi_eeprom: SPI EEPROM device
117 * @spi_lock: SPI bus lock
118 * @mdio_lock: MDIO bus lock
119 * @xmac_poll_required: XMAC link state needs polling
121 struct falcon_nic_data {
122 struct pci_dev *pci_dev2;
123 struct falcon_board board;
124 unsigned int stats_disable_count;
126 struct timer_list stats_timer;
128 struct efx_spi_device spi_flash;
129 struct efx_spi_device spi_eeprom;
130 struct mutex spi_lock;
131 struct mutex mdio_lock;
132 bool xmac_poll_required;
135 static inline struct falcon_board *falcon_board(struct efx_nic *efx)
137 struct falcon_nic_data *data = efx->nic_data;
142 * struct siena_nic_data - Siena NIC state
143 * @mcdi: Management-Controller-to-Driver Interface
144 * @wol_filter_id: Wake-on-LAN packet filter id
145 * @hwmon: Hardware monitor state
147 struct siena_nic_data {
148 struct efx_mcdi_iface mcdi;
150 #ifdef CONFIG_SFC_MCDI_MON
151 struct efx_mcdi_mon hwmon;
155 #ifdef CONFIG_SFC_MCDI_MON
156 static inline struct efx_mcdi_mon *efx_mcdi_mon(struct efx_nic *efx)
158 struct siena_nic_data *nic_data;
159 EFX_BUG_ON_PARANOID(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
160 nic_data = efx->nic_data;
161 return &nic_data->hwmon;
166 * On the SFC9000 family each port is associated with 1 PCI physical
167 * function (PF) handled by sfc and a configurable number of virtual
168 * functions (VFs) that may be handled by some other driver, often in
169 * a VM guest. The queue pointer registers are mapped in both PF and
170 * VF BARs such that an 8K region provides access to a single RX, TX
171 * and event queue (collectively a Virtual Interface, VI or VNIC).
173 * The PF has access to all 1024 VIs while VFs are mapped to VIs
174 * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered
175 * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE).
176 * The number of VIs and the VI_SCALE value are configurable but must
177 * be established at boot time by firmware.
180 /* Maximum VI_SCALE parameter supported by Siena */
181 #define EFX_VI_SCALE_MAX 6
182 /* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX),
183 * so this is the smallest allowed value. */
184 #define EFX_VI_BASE 128U
185 /* Maximum number of VFs allowed */
186 #define EFX_VF_COUNT_MAX 127
187 /* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */
188 #define EFX_MAX_VF_EVQ_SIZE 8192UL
189 /* The number of buffer table entries reserved for each VI on a VF */
190 #define EFX_VF_BUFTBL_PER_VI \
191 ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) * \
192 sizeof(efx_qword_t) / EFX_BUF_SIZE)
194 #ifdef CONFIG_SFC_SRIOV
196 static inline bool efx_sriov_wanted(struct efx_nic *efx)
198 return efx->vf_count != 0;
200 static inline bool efx_sriov_enabled(struct efx_nic *efx)
202 return efx->vf_init_count != 0;
204 static inline unsigned int efx_vf_size(struct efx_nic *efx)
206 return 1 << efx->vi_scale;
209 extern int efx_init_sriov(void);
210 extern void efx_sriov_probe(struct efx_nic *efx);
211 extern int efx_sriov_init(struct efx_nic *efx);
212 extern void efx_sriov_mac_address_changed(struct efx_nic *efx);
213 extern void efx_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event);
214 extern void efx_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event);
215 extern void efx_sriov_event(struct efx_channel *channel, efx_qword_t *event);
216 extern void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq);
217 extern void efx_sriov_flr(struct efx_nic *efx, unsigned flr);
218 extern void efx_sriov_reset(struct efx_nic *efx);
219 extern void efx_sriov_fini(struct efx_nic *efx);
220 extern void efx_fini_sriov(void);
224 static inline bool efx_sriov_wanted(struct efx_nic *efx) { return false; }
225 static inline bool efx_sriov_enabled(struct efx_nic *efx) { return false; }
226 static inline unsigned int efx_vf_size(struct efx_nic *efx) { return 0; }
228 static inline int efx_init_sriov(void) { return 0; }
229 static inline void efx_sriov_probe(struct efx_nic *efx) {}
230 static inline int efx_sriov_init(struct efx_nic *efx) { return -EOPNOTSUPP; }
231 static inline void efx_sriov_mac_address_changed(struct efx_nic *efx) {}
232 static inline void efx_sriov_tx_flush_done(struct efx_nic *efx,
233 efx_qword_t *event) {}
234 static inline void efx_sriov_rx_flush_done(struct efx_nic *efx,
235 efx_qword_t *event) {}
236 static inline void efx_sriov_event(struct efx_channel *channel,
237 efx_qword_t *event) {}
238 static inline void efx_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq) {}
239 static inline void efx_sriov_flr(struct efx_nic *efx, unsigned flr) {}
240 static inline void efx_sriov_reset(struct efx_nic *efx) {}
241 static inline void efx_sriov_fini(struct efx_nic *efx) {}
242 static inline void efx_fini_sriov(void) {}
246 extern int efx_sriov_set_vf_mac(struct net_device *dev, int vf, u8 *mac);
247 extern int efx_sriov_set_vf_vlan(struct net_device *dev, int vf,
249 extern int efx_sriov_get_vf_config(struct net_device *dev, int vf,
250 struct ifla_vf_info *ivf);
251 extern int efx_sriov_set_vf_spoofchk(struct net_device *net_dev, int vf,
254 struct ethtool_ts_info;
255 extern void efx_ptp_probe(struct efx_nic *efx);
256 extern int efx_ptp_ioctl(struct efx_nic *efx, struct ifreq *ifr, int cmd);
257 extern void efx_ptp_get_ts_info(struct efx_nic *efx,
258 struct ethtool_ts_info *ts_info);
259 extern bool efx_ptp_is_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
260 extern int efx_ptp_tx(struct efx_nic *efx, struct sk_buff *skb);
261 extern void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev);
263 extern const struct efx_nic_type falcon_a1_nic_type;
264 extern const struct efx_nic_type falcon_b0_nic_type;
265 extern const struct efx_nic_type siena_a0_nic_type;
267 /**************************************************************************
271 **************************************************************************
274 extern int falcon_probe_board(struct efx_nic *efx, u16 revision_info);
277 extern int efx_nic_probe_tx(struct efx_tx_queue *tx_queue);
278 extern void efx_nic_init_tx(struct efx_tx_queue *tx_queue);
279 extern void efx_nic_fini_tx(struct efx_tx_queue *tx_queue);
280 extern void efx_nic_remove_tx(struct efx_tx_queue *tx_queue);
281 extern void efx_nic_push_buffers(struct efx_tx_queue *tx_queue);
284 extern int efx_nic_probe_rx(struct efx_rx_queue *rx_queue);
285 extern void efx_nic_init_rx(struct efx_rx_queue *rx_queue);
286 extern void efx_nic_fini_rx(struct efx_rx_queue *rx_queue);
287 extern void efx_nic_remove_rx(struct efx_rx_queue *rx_queue);
288 extern void efx_nic_notify_rx_desc(struct efx_rx_queue *rx_queue);
289 extern void efx_nic_generate_fill_event(struct efx_rx_queue *rx_queue);
291 /* Event data path */
292 extern int efx_nic_probe_eventq(struct efx_channel *channel);
293 extern void efx_nic_init_eventq(struct efx_channel *channel);
294 extern void efx_nic_fini_eventq(struct efx_channel *channel);
295 extern void efx_nic_remove_eventq(struct efx_channel *channel);
296 extern int efx_nic_process_eventq(struct efx_channel *channel, int rx_quota);
297 extern void efx_nic_eventq_read_ack(struct efx_channel *channel);
298 extern bool efx_nic_event_present(struct efx_channel *channel);
301 extern void falcon_drain_tx_fifo(struct efx_nic *efx);
302 extern void falcon_reconfigure_mac_wrapper(struct efx_nic *efx);
303 extern bool falcon_xmac_check_fault(struct efx_nic *efx);
304 extern int falcon_reconfigure_xmac(struct efx_nic *efx);
305 extern void falcon_update_stats_xmac(struct efx_nic *efx);
307 /* Some statistics are computed as A - B where A and B each increase
308 * linearly with some hardware counter(s) and the counters are read
309 * asynchronously. If the counters contributing to B are always read
310 * after those contributing to A, the computed value may be lower than
311 * the true value by some variable amount, and may decrease between
312 * subsequent computations.
314 * We should never allow statistics to decrease or to exceed the true
315 * value. Since the computed value will never be greater than the
316 * true value, we can achieve this by only storing the computed value
319 static inline void efx_update_diff_stat(u64 *stat, u64 diff)
321 if ((s64)(diff - *stat) > 0)
325 /* Interrupts and test events */
326 extern int efx_nic_init_interrupt(struct efx_nic *efx);
327 extern void efx_nic_enable_interrupts(struct efx_nic *efx);
328 extern void efx_nic_event_test_start(struct efx_channel *channel);
329 extern void efx_nic_irq_test_start(struct efx_nic *efx);
330 extern void efx_nic_disable_interrupts(struct efx_nic *efx);
331 extern void efx_nic_fini_interrupt(struct efx_nic *efx);
332 extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
333 extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
334 extern void falcon_irq_ack_a1(struct efx_nic *efx);
336 static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel)
338 return ACCESS_ONCE(channel->event_test_cpu);
340 static inline int efx_nic_irq_test_irq_cpu(struct efx_nic *efx)
342 return ACCESS_ONCE(efx->last_irq_cpu);
345 /* Global Resources */
346 extern int efx_nic_flush_queues(struct efx_nic *efx);
347 extern void siena_prepare_flush(struct efx_nic *efx);
348 extern void siena_finish_flush(struct efx_nic *efx);
349 extern void falcon_start_nic_stats(struct efx_nic *efx);
350 extern void falcon_stop_nic_stats(struct efx_nic *efx);
351 extern void falcon_setup_xaui(struct efx_nic *efx);
352 extern int falcon_reset_xaui(struct efx_nic *efx);
354 efx_nic_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
355 extern void efx_nic_init_common(struct efx_nic *efx);
356 extern void efx_nic_push_rx_indir_table(struct efx_nic *efx);
358 int efx_nic_alloc_buffer(struct efx_nic *efx, struct efx_buffer *buffer,
360 void efx_nic_free_buffer(struct efx_nic *efx, struct efx_buffer *buffer);
363 struct efx_nic_register_test {
367 extern int efx_nic_test_registers(struct efx_nic *efx,
368 const struct efx_nic_register_test *regs,
371 extern size_t efx_nic_get_regs_len(struct efx_nic *efx);
372 extern void efx_nic_get_regs(struct efx_nic *efx, void *buf);
374 /**************************************************************************
378 **************************************************************************
381 #define FALCON_STAT_OFFSET(falcon_stat) EFX_VAL(falcon_stat, offset)
382 #define FALCON_STAT_WIDTH(falcon_stat) EFX_VAL(falcon_stat, WIDTH)
384 /* Retrieve statistic from statistics block */
385 #define FALCON_STAT(efx, falcon_stat, efx_stat) do { \
386 if (FALCON_STAT_WIDTH(falcon_stat) == 16) \
387 (efx)->mac_stats.efx_stat += le16_to_cpu( \
388 *((__force __le16 *) \
389 (efx->stats_buffer.addr + \
390 FALCON_STAT_OFFSET(falcon_stat)))); \
391 else if (FALCON_STAT_WIDTH(falcon_stat) == 32) \
392 (efx)->mac_stats.efx_stat += le32_to_cpu( \
393 *((__force __le32 *) \
394 (efx->stats_buffer.addr + \
395 FALCON_STAT_OFFSET(falcon_stat)))); \
397 (efx)->mac_stats.efx_stat += le64_to_cpu( \
398 *((__force __le64 *) \
399 (efx->stats_buffer.addr + \
400 FALCON_STAT_OFFSET(falcon_stat)))); \
403 #define FALCON_MAC_STATS_SIZE 0x100
405 #define MAC_DATA_LBN 0
406 #define MAC_DATA_WIDTH 32
408 extern void efx_generate_event(struct efx_nic *efx, unsigned int evq,
411 extern void falcon_poll_xmac(struct efx_nic *efx);
413 #endif /* EFX_NIC_H */