sparc: VIO protocol version 1.6

Add VIO protocol version 1.6 interfaces.

Signed-off-by: David L Stevens <david.stevens@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 54 insertions, 4 deletions

diff --git a/arch/sparc/include/asm/vio.h b/arch/sparc/include/asm/vio.h
index e0f6c399f1d0..6b135a8ab07b 100644
--- a/arch/sparc/include/asm/vio.h
+++ b/arch/sparc/include/asm/vio.h
@@ -65,6 +65,7 @@ struct vio_dring_register {
         u16                     options;
 #define VIO_TX_DRING            0x0001
 #define VIO_RX_DRING            0x0002
+#define VIO_RX_DRING_DATA       0x0004
         u16                     resv;
         u32                     num_cookies;
         struct ldc_trans_cookie cookies[0];
@@ -80,6 +81,8 @@ struct vio_dring_unregister {
 #define VIO_PKT_MODE            0x01 /* Packet based transfer   */
 #define VIO_DESC_MODE           0x02 /* In-band descriptors     */
 #define VIO_DRING_MODE          0x03 /* Descriptor rings        */
+/* in vers >= 1.2, VIO_DRING_MODE is 0x04 and transfer mode is a bitmask */
+#define VIO_NEW_DRING_MODE      0x04
 
 struct vio_dring_data {
         struct vio_msg_tag      tag;
@@ -205,10 +208,20 @@ struct vio_net_attr_info {
         u8                      addr_type;
 #define VNET_ADDR_ETHERMAC      0x01
         u16                     ack_freq;
-        u32                     resv1;
+        u8                      plnk_updt;
+#define PHYSLINK_UPDATE_NONE            0x00
+#define PHYSLINK_UPDATE_STATE           0x01
+#define PHYSLINK_UPDATE_STATE_ACK       0x02
+#define PHYSLINK_UPDATE_STATE_NACK      0x03
+        u8                      options;
+        u16                     resv1;
         u64                     addr;
         u64                     mtu;
-        u64                     resv2[3];
+        u16                     cflags;
+#define VNET_LSO_IPV4_CAPAB             0x0001
+        u16                     ipv4_lso_maxlen;
+        u32                     resv2;
+        u64                     resv3[2];
 };
 
 #define VNET_NUM_MCAST          7
@@ -366,6 +379,33 @@ struct vio_driver_state {
         struct vio_driver_ops   *ops;
 };
 
+static inline bool vio_version_before(struct vio_driver_state *vio,
+                                      u16 major, u16 minor)
+{
+        u32 have = (u32)vio->ver.major << 16 | vio->ver.minor;
+        u32 want = (u32)major << 16 | minor;
+
+        return have < want;
+}
+
+static inline bool vio_version_after(struct vio_driver_state *vio,
+                                      u16 major, u16 minor)
+{
+        u32 have = (u32)vio->ver.major << 16 | vio->ver.minor;
+        u32 want = (u32)major << 16 | minor;
+
+        return have > want;
+}
+
+static inline bool vio_version_after_eq(struct vio_driver_state *vio,
+                                        u16 major, u16 minor)
+{
+        u32 have = (u32)vio->ver.major << 16 | vio->ver.minor;
+        u32 want = (u32)major << 16 | minor;
+
+        return have >= want;
+}
+
 #define viodbg(TYPE, f, a...) \
 do {    if (vio->debug & VIO_DEBUG_##TYPE) \
                 printk(KERN_INFO "vio: ID[%lu] " f, \
diff --git a/arch/sparc/kernel/viohs.c b/arch/sparc/kernel/viohs.c
index 9c5fbd0b8a04..526fcb5d8ce9 100644
--- a/arch/sparc/kernel/viohs.c
+++ b/arch/sparc/kernel/viohs.c
@@ -426,6 +426,13 @@ static int process_dreg_info(struct vio_driver_state *vio,
         if (vio->dr_state & VIO_DR_STATE_RXREG)
                 goto send_nack;
 
+        /* v1.6 and higher, ACK with desired, supported mode, or NACK */
+        if (vio_version_after_eq(vio, 1, 6)) {
+                if (!(pkt->options & VIO_TX_DRING))
+                        goto send_nack;
+                pkt->options = VIO_TX_DRING;
+        }
+
         BUG_ON(vio->desc_buf);
 
         vio->desc_buf = kzalloc(pkt->descr_size, GFP_ATOMIC);
@@ -453,8 +460,11 @@ static int process_dreg_info(struct vio_driver_state *vio,
         pkt->tag.stype = VIO_SUBTYPE_ACK;
         pkt->dring_ident = ++dr->ident;
 
-        viodbg(HS, "SEND DRING_REG ACK ident[%llx]\n",
-               (unsigned long long) pkt->dring_ident);
+        viodbg(HS, "SEND DRING_REG ACK ident[%llx] "
+               "ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
+               (unsigned long long) pkt->dring_ident,
+               pkt->num_descr, pkt->descr_size, pkt->options,
+               pkt->num_cookies);
 
         len = (sizeof(*pkt) +
                (dr->ncookies * sizeof(struct ldc_trans_cookie)));