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authorShradha Shah <sshah@solarflare.com>2015-05-06 00:55:13 +0100
committerDavid S. Miller <davem@davemloft.net>2015-05-09 16:16:46 -0400
commit7fa8d547049aae543a5f21f1fe0e14414f1e7fdc (patch)
tree76554b506cb5cf42cb84a049916b23fe1ae00697 /drivers/net/ethernet/sfc/siena_sriov.h
parentf926204b8bc978b7222403ddc9ec91bfb0f68428 (diff)
downloadlinux-7fa8d547049aae543a5f21f1fe0e14414f1e7fdc.tar.bz2
sfc: Own header for nic-specific sriov functions, single instance of netdev_ops and sriov removed from Falcon code
By putting all the efx_{siena,ef10}_sriov_* declarations in {siena,ef10}_sriov.h, ensure they cannot be called from nic-generic code. Also fixes up an instance of this, where mcdi.c was calling efx_siena_sriov_flr. The single instance of netdev_ops should call general high level functions that can then call something adapter specific in efx_nic_type. We should only do adapter specialisation via efx_nic_type. Removal of sriov functionality from the Falcon code means that tests are needed for the presence of some callbacks. Signed-off-by: Shradha Shah <sshah@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/siena_sriov.h')
-rw-r--r--drivers/net/ethernet/sfc/siena_sriov.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/siena_sriov.h b/drivers/net/ethernet/sfc/siena_sriov.h
new file mode 100644
index 000000000000..b3a08d156943
--- /dev/null
+++ b/drivers/net/ethernet/sfc/siena_sriov.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2015 Solarflare Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+
+#ifndef SIENA_SRIOV_H
+#define SIENA_SRIOV_H
+
+#include "net_driver.h"
+
+/* On the SFC9000 family each port is associated with 1 PCI physical
+ * function (PF) handled by sfc and a configurable number of virtual
+ * functions (VFs) that may be handled by some other driver, often in
+ * a VM guest. The queue pointer registers are mapped in both PF and
+ * VF BARs such that an 8K region provides access to a single RX, TX
+ * and event queue (collectively a Virtual Interface, VI or VNIC).
+ *
+ * The PF has access to all 1024 VIs while VFs are mapped to VIs
+ * according to VI_BASE and VI_SCALE: VF i has access to VIs numbered
+ * in range [VI_BASE + i << VI_SCALE, VI_BASE + i + 1 << VI_SCALE).
+ * The number of VIs and the VI_SCALE value are configurable but must
+ * be established at boot time by firmware.
+ */
+
+/* Maximum VI_SCALE parameter supported by Siena */
+#define EFX_VI_SCALE_MAX 6
+/* Base VI to use for SR-IOV. Must be aligned to (1 << EFX_VI_SCALE_MAX),
+ * so this is the smallest allowed value.
+ */
+#define EFX_VI_BASE 128U
+/* Maximum number of VFs allowed */
+#define EFX_VF_COUNT_MAX 127
+/* Limit EVQs on VFs to be only 8k to reduce buffer table reservation */
+#define EFX_MAX_VF_EVQ_SIZE 8192UL
+/* The number of buffer table entries reserved for each VI on a VF */
+#define EFX_VF_BUFTBL_PER_VI \
+ ((EFX_MAX_VF_EVQ_SIZE + 2 * EFX_MAX_DMAQ_SIZE) * \
+ sizeof(efx_qword_t) / EFX_BUF_SIZE)
+
+int efx_siena_sriov_init(struct efx_nic *efx);
+void efx_siena_sriov_fini(struct efx_nic *efx);
+void efx_siena_sriov_mac_address_changed(struct efx_nic *efx);
+bool efx_siena_sriov_wanted(struct efx_nic *efx);
+void efx_siena_sriov_reset(struct efx_nic *efx);
+void efx_siena_sriov_flr(struct efx_nic *efx, unsigned flr);
+
+int efx_siena_sriov_set_vf_mac(struct efx_nic *efx, int vf, u8 *mac);
+int efx_siena_sriov_set_vf_vlan(struct efx_nic *efx, int vf,
+ u16 vlan, u8 qos);
+int efx_siena_sriov_set_vf_spoofchk(struct efx_nic *efx, int vf,
+ bool spoofchk);
+int efx_siena_sriov_get_vf_config(struct efx_nic *efx, int vf,
+ struct ifla_vf_info *ivf);
+
+#ifdef CONFIG_SFC_SRIOV
+
+static inline bool efx_siena_sriov_enabled(struct efx_nic *efx)
+{
+ return efx->vf_init_count != 0;
+}
+#else /* !CONFIG_SFC_SRIOV */
+static inline bool efx_siena_sriov_enabled(struct efx_nic *efx)
+{
+ return false;
+}
+#endif /* CONFIG_SFC_SRIOV */
+
+void efx_siena_sriov_probe(struct efx_nic *efx);
+void efx_siena_sriov_tx_flush_done(struct efx_nic *efx, efx_qword_t *event);
+void efx_siena_sriov_rx_flush_done(struct efx_nic *efx, efx_qword_t *event);
+void efx_siena_sriov_event(struct efx_channel *channel, efx_qword_t *event);
+void efx_siena_sriov_desc_fetch_err(struct efx_nic *efx, unsigned dmaq);
+
+#endif /* SIENA_SRIOV_H */