bnx2x: Support PF <-> VF Bulletin Board

The PF <-> VF Bulletin Board is a simple interface between the
PF and the VF. The main reason for the Bulletin Board is to allow
the PF to be the initiator. The VF publishes at 'acquire' stage
the GPA of a Bulletin Board structure it has allocated. The PF notes
this GPA in the VF database. The VF samples the Bulletin Board
periodically for new messages. The latest version of the BB is always
used.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h
index 554c119..9f07ada 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h
@@ -37,6 +37,7 @@ struct hw_sb_info {
  * A.K.A VF-PF mailbox
  */
 #define TLV_BUFFER_SIZE			1024
+#define PF_VF_BULLETIN_SIZE		512
 
 #define VFPF_QUEUE_FLG_TPA		0x0001
 #define VFPF_QUEUE_FLG_TPA_IPV6		0x0002
@@ -60,6 +61,9 @@ struct hw_sb_info {
 #define VFPF_RX_MASK_ACCEPT_ALL_UNICAST		0x00000004
 #define VFPF_RX_MASK_ACCEPT_ALL_MULTICAST	0x00000008
 #define VFPF_RX_MASK_ACCEPT_BROADCAST		0x00000010
+#define BULLETIN_CONTENT_SIZE		(sizeof(struct pf_vf_bulletin_content))
+#define BULLETIN_ATTEMPTS	5 /* crc failures before throwing towel */
+#define BULLETIN_CRC_SEED	0
 
 enum {
 	PFVF_STATUS_WAITING = 0,
@@ -299,6 +303,38 @@ union pfvf_tlvs {
 	struct tlv_buffer_size		tlv_buf_size;
 };
 
+/* This is a structure which is allocated in the VF, which the PF may update
+ * when it deems it necessary to do so. The bulletin board is sampled
+ * periodically by the VF. A copy per VF is maintained in the PF (to prevent
+ * loss of data upon multiple updates (or the need for read modify write)).
+ */
+struct pf_vf_bulletin_size {
+	u8 size[PF_VF_BULLETIN_SIZE];
+};
+
+struct pf_vf_bulletin_content {
+	u32 crc;			/* crc of structure to ensure is not in
+					 * mid-update
+					 */
+	u32 version;
+
+	aligned_u64 valid_bitmap;	/* bitmap indicating which fields
+					 * hold valid values
+					 */
+
+#define MAC_ADDR_VALID		0	/* alert the vf that a new mac address
+					 * is available for it
+					 */
+
+	u8 mac[ETH_ALEN];
+	u8 padding[2];
+};
+
+union pf_vf_bulletin {
+	struct pf_vf_bulletin_content content;
+	struct pf_vf_bulletin_size size;
+};
+
 #define MAX_TLVS_IN_LIST 50
 
 enum channel_tlvs {
@@ -313,6 +349,7 @@ enum channel_tlvs {
 	CHANNEL_TLV_PF_RELEASE_VF,
 	CHANNEL_TLV_LIST_END,
 	CHANNEL_TLV_FLR,
+	CHANNEL_TLV_PF_SET_MAC,
 	CHANNEL_TLV_MAX
 };