sfc: Add support for Solarflare SFC9100 family

This adds support for the EF10 network controller architecture and the
SFC9100 family, starting with SFC9120 'Farmingdale', and bumps the
driver version to 4.0.

New features in the SFC9100 family include:

- Flexible allocation of internal resources to PCIe physical and virtual
  functions under firmware control
- RX event merging to reduce DMA writes at high packet rates
- Integrated RX timestamping
- PIO buffers for lower TX latency
- Firmware-driven data path that supports additional offload features
  and filter types
- Delivery of packets between functions and to multiple recipients,
  allowing firmware to implement a vswitch
- Multiple RX flow hash (RSS) contexts with their own hash keys and
  indirection tables
- 40G MAC (single port only)

...not all of which are enabled in this initial driver or the initial
firmware release.

Much of the new code is by Jon Cooper.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 75 insertions, 4 deletions

diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 686ce7a677df..4bd53596a473 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -17,15 +17,12 @@
 #include "efx.h"
 #include "mcdi.h"
 
-/*
- * Falcon hardware control
- */
-
 enum {
 	EFX_REV_FALCON_A0 = 0,
 	EFX_REV_FALCON_A1 = 1,
 	EFX_REV_FALCON_B0 = 2,
 	EFX_REV_SIENA_A0 = 3,
+	EFX_REV_HUNT_A0 = 4,
 };
 
 static inline int efx_nic_rev(struct efx_nic *efx)
@@ -347,6 +344,78 @@ struct siena_nic_data {
 	u64 stats[SIENA_STAT_COUNT];
 };
 
+enum {
+	EF10_STAT_tx_bytes,
+	EF10_STAT_tx_packets,
+	EF10_STAT_tx_pause,
+	EF10_STAT_tx_control,
+	EF10_STAT_tx_unicast,
+	EF10_STAT_tx_multicast,
+	EF10_STAT_tx_broadcast,
+	EF10_STAT_tx_lt64,
+	EF10_STAT_tx_64,
+	EF10_STAT_tx_65_to_127,
+	EF10_STAT_tx_128_to_255,
+	EF10_STAT_tx_256_to_511,
+	EF10_STAT_tx_512_to_1023,
+	EF10_STAT_tx_1024_to_15xx,
+	EF10_STAT_tx_15xx_to_jumbo,
+	EF10_STAT_rx_bytes,
+	EF10_STAT_rx_bytes_minus_good_bytes,
+	EF10_STAT_rx_good_bytes,
+	EF10_STAT_rx_bad_bytes,
+	EF10_STAT_rx_packets,
+	EF10_STAT_rx_good,
+	EF10_STAT_rx_bad,
+	EF10_STAT_rx_pause,
+	EF10_STAT_rx_control,
+	EF10_STAT_rx_unicast,
+	EF10_STAT_rx_multicast,
+	EF10_STAT_rx_broadcast,
+	EF10_STAT_rx_lt64,
+	EF10_STAT_rx_64,
+	EF10_STAT_rx_65_to_127,
+	EF10_STAT_rx_128_to_255,
+	EF10_STAT_rx_256_to_511,
+	EF10_STAT_rx_512_to_1023,
+	EF10_STAT_rx_1024_to_15xx,
+	EF10_STAT_rx_15xx_to_jumbo,
+	EF10_STAT_rx_gtjumbo,
+	EF10_STAT_rx_bad_gtjumbo,
+	EF10_STAT_rx_overflow,
+	EF10_STAT_rx_align_error,
+	EF10_STAT_rx_length_error,
+	EF10_STAT_rx_nodesc_drops,
+	EF10_STAT_COUNT
+};
+
+/**
+ * struct efx_ef10_nic_data - EF10 architecture NIC state
+ * @mcdi_buf: DMA buffer for MCDI
+ * @warm_boot_count: Last seen MC warm boot count
+ * @vi_base: Absolute index of first VI in this function
+ * @n_allocated_vis: Number of VIs allocated to this function
+ * @must_realloc_vis: Flag: VIs have yet to be reallocated after MC reboot
+ * @must_restore_filters: Flag: filters have yet to be restored after MC reboot
+ * @rx_rss_context: Firmware handle for our RSS context
+ * @stats: Hardware statistics
+ * @workaround_35388: Flag: firmware supports workaround for bug 35388
+ * @datapath_caps: Capabilities of datapath firmware (FLAGS1 field of
+ *	%MC_CMD_GET_CAPABILITIES response)
+ */
+struct efx_ef10_nic_data {
+	struct efx_buffer mcdi_buf;
+	u16 warm_boot_count;
+	unsigned int vi_base;
+	unsigned int n_allocated_vis;
+	bool must_realloc_vis;
+	bool must_restore_filters;
+	u32 rx_rss_context;
+	u64 stats[EF10_STAT_COUNT];
+	bool workaround_35388;
+	u32 datapath_caps;
+};
+
 /*
  * On the SFC9000 family each port is associated with 1 PCI physical
  * function (PF) handled by sfc and a configurable number of virtual
@@ -448,6 +517,7 @@ extern void efx_ptp_event(struct efx_nic *efx, efx_qword_t *ev);
 extern const struct efx_nic_type falcon_a1_nic_type;
 extern const struct efx_nic_type falcon_b0_nic_type;
 extern const struct efx_nic_type siena_a0_nic_type;
+extern const struct efx_nic_type efx_hunt_a0_nic_type;
 
 /**************************************************************************
  *
@@ -627,6 +697,7 @@ extern void falcon_stop_nic_stats(struct efx_nic *efx);
 extern int falcon_reset_xaui(struct efx_nic *efx);
 extern void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
 extern void efx_farch_init_common(struct efx_nic *efx);
+extern void efx_ef10_handle_drain_event(struct efx_nic *efx);
 static inline void efx_nic_push_rx_indir_table(struct efx_nic *efx)
 {
 	efx->type->rx_push_indir_table(efx);