sfc: move MCDI VI alloc/free code

One function was renamed here, the other contains code extracted from
another.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/mcdi_functions.c b/drivers/net/ethernet/sfc/mcdi_functions.c
new file mode 100644
index 000000000000..65a4689337db
--- /dev/null
+++ b/drivers/net/ethernet/sfc/mcdi_functions.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/****************************************************************************
+ * Driver for Solarflare network controllers and boards
+ * Copyright 2019 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.
+ */
+
+#include "net_driver.h"
+#include "efx.h"
+#include "nic.h"
+#include "mcdi_functions.h"
+#include "mcdi.h"
+#include "mcdi_pcol.h"
+
+int efx_mcdi_free_vis(struct efx_nic *efx)
+{
+	MCDI_DECLARE_BUF_ERR(outbuf);
+	size_t outlen;
+	int rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FREE_VIS, NULL, 0,
+				    outbuf, sizeof(outbuf), &outlen);
+
+	/* -EALREADY means nothing to free, so ignore */
+	if (rc == -EALREADY)
+		rc = 0;
+	if (rc)
+		efx_mcdi_display_error(efx, MC_CMD_FREE_VIS, 0, outbuf, outlen,
+				       rc);
+	return rc;
+}
+
+int efx_mcdi_alloc_vis(struct efx_nic *efx, unsigned int min_vis,
+		       unsigned int max_vis, unsigned int *vi_base,
+		       unsigned int *allocated_vis)
+{
+	MCDI_DECLARE_BUF(outbuf, MC_CMD_ALLOC_VIS_OUT_LEN);
+	MCDI_DECLARE_BUF(inbuf, MC_CMD_ALLOC_VIS_IN_LEN);
+	size_t outlen;
+	int rc;
+
+	MCDI_SET_DWORD(inbuf, ALLOC_VIS_IN_MIN_VI_COUNT, min_vis);
+	MCDI_SET_DWORD(inbuf, ALLOC_VIS_IN_MAX_VI_COUNT, max_vis);
+	rc = efx_mcdi_rpc(efx, MC_CMD_ALLOC_VIS, inbuf, sizeof(inbuf),
+			  outbuf, sizeof(outbuf), &outlen);
+	if (rc != 0)
+		return rc;
+
+	if (outlen < MC_CMD_ALLOC_VIS_OUT_LEN)
+		return -EIO;
+
+	netif_dbg(efx, drv, efx->net_dev, "base VI is A0x%03x\n",
+		  MCDI_DWORD(outbuf, ALLOC_VIS_OUT_VI_BASE));
+
+	if (vi_base)
+		*vi_base = MCDI_DWORD(outbuf, ALLOC_VIS_OUT_VI_BASE);
+	if (allocated_vis)
+		*allocated_vis = MCDI_DWORD(outbuf, ALLOC_VIS_OUT_VI_COUNT);
+	return 0;
+}