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authorLinus Torvalds <torvalds@linux-foundation.org>2018-02-01 01:31:10 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-01 01:31:10 +0300
commitb2fe5fa68642860e7de76167c3111623aa0d5de1 (patch)
treeb7f9b89b7039ecefbc35fe3c8e73a6ff972641dd /drivers/net/ethernet/netronome/nfp/nfp_asm.c
parenta103950e0dd2058df5e8a8d4a915707bdcf205f0 (diff)
parenta54667f6728c2714a400f3c884727da74b6d1717 (diff)
downloadlinux-b2fe5fa68642860e7de76167c3111623aa0d5de1.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller: 1) Significantly shrink the core networking routing structures. Result of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf 2) Add netdevsim driver for testing various offloads, from Jakub Kicinski. 3) Support cross-chip FDB operations in DSA, from Vivien Didelot. 4) Add a 2nd listener hash table for TCP, similar to what was done for UDP. From Martin KaFai Lau. 5) Add eBPF based queue selection to tun, from Jason Wang. 6) Lockless qdisc support, from John Fastabend. 7) SCTP stream interleave support, from Xin Long. 8) Smoother TCP receive autotuning, from Eric Dumazet. 9) Lots of erspan tunneling enhancements, from William Tu. 10) Add true function call support to BPF, from Alexei Starovoitov. 11) Add explicit support for GRO HW offloading, from Michael Chan. 12) Support extack generation in more netlink subsystems. From Alexander Aring, Quentin Monnet, and Jakub Kicinski. 13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From Russell King. 14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso. 15) Many improvements and simplifications to the NFP driver bpf JIT, from Jakub Kicinski. 16) Support for ipv6 non-equal cost multipath routing, from Ido Schimmel. 17) Add resource abstration to devlink, from Arkadi Sharshevsky. 18) Packet scheduler classifier shared filter block support, from Jiri Pirko. 19) Avoid locking in act_csum, from Davide Caratti. 20) devinet_ioctl() simplifications from Al viro. 21) More TCP bpf improvements from Lawrence Brakmo. 22) Add support for onlink ipv6 route flag, similar to ipv4, from David Ahern. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits) tls: Add support for encryption using async offload accelerator ip6mr: fix stale iterator net/sched: kconfig: Remove blank help texts openvswitch: meter: Use 64-bit arithmetic instead of 32-bit tcp_nv: fix potential integer overflow in tcpnv_acked r8169: fix RTL8168EP take too long to complete driver initialization. qmi_wwan: Add support for Quectel EP06 rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK ipmr: Fix ptrdiff_t print formatting ibmvnic: Wait for device response when changing MAC qlcnic: fix deadlock bug tcp: release sk_frag.page in tcp_disconnect ipv4: Get the address of interface correctly. net_sched: gen_estimator: fix lockdep splat net: macb: Handle HRESP error net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring ipv6: addrconf: break critical section in addrconf_verify_rtnl() ipv6: change route cache aging logic i40e/i40evf: Update DESC_NEEDED value to reflect larger value bnxt_en: cleanup DIM work on device shutdown ...
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_asm.c')
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_asm.c95
1 files changed, 93 insertions, 2 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_asm.c b/drivers/net/ethernet/netronome/nfp/nfp_asm.c
index 830f6de25f47..3f6952b66a49 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_asm.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_asm.c
@@ -41,6 +41,7 @@
const struct cmd_tgt_act cmd_tgt_act[__CMD_TGT_MAP_SIZE] = {
[CMD_TGT_WRITE8_SWAP] = { 0x02, 0x42 },
+ [CMD_TGT_WRITE32_SWAP] = { 0x02, 0x5f },
[CMD_TGT_READ8] = { 0x01, 0x43 },
[CMD_TGT_READ32] = { 0x00, 0x5c },
[CMD_TGT_READ32_LE] = { 0x01, 0x5c },
@@ -49,6 +50,94 @@ const struct cmd_tgt_act cmd_tgt_act[__CMD_TGT_MAP_SIZE] = {
[CMD_TGT_READ_SWAP_LE] = { 0x03, 0x40 },
};
+static bool unreg_is_imm(u16 reg)
+{
+ return (reg & UR_REG_IMM) == UR_REG_IMM;
+}
+
+u16 br_get_offset(u64 instr)
+{
+ u16 addr_lo, addr_hi;
+
+ addr_lo = FIELD_GET(OP_BR_ADDR_LO, instr);
+ addr_hi = FIELD_GET(OP_BR_ADDR_HI, instr);
+
+ return (addr_hi * ((OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO)) + 1)) |
+ addr_lo;
+}
+
+void br_set_offset(u64 *instr, u16 offset)
+{
+ u16 addr_lo, addr_hi;
+
+ addr_lo = offset & (OP_BR_ADDR_LO >> __bf_shf(OP_BR_ADDR_LO));
+ addr_hi = offset != addr_lo;
+ *instr &= ~(OP_BR_ADDR_HI | OP_BR_ADDR_LO);
+ *instr |= FIELD_PREP(OP_BR_ADDR_HI, addr_hi);
+ *instr |= FIELD_PREP(OP_BR_ADDR_LO, addr_lo);
+}
+
+void br_add_offset(u64 *instr, u16 offset)
+{
+ u16 addr;
+
+ addr = br_get_offset(*instr);
+ br_set_offset(instr, addr + offset);
+}
+
+static bool immed_can_modify(u64 instr)
+{
+ if (FIELD_GET(OP_IMMED_INV, instr) ||
+ FIELD_GET(OP_IMMED_SHIFT, instr) ||
+ FIELD_GET(OP_IMMED_WIDTH, instr) != IMMED_WIDTH_ALL) {
+ pr_err("Can't decode/encode immed!\n");
+ return false;
+ }
+ return true;
+}
+
+u16 immed_get_value(u64 instr)
+{
+ u16 reg;
+
+ if (!immed_can_modify(instr))
+ return 0;
+
+ reg = FIELD_GET(OP_IMMED_A_SRC, instr);
+ if (!unreg_is_imm(reg))
+ reg = FIELD_GET(OP_IMMED_B_SRC, instr);
+
+ return (reg & 0xff) | FIELD_GET(OP_IMMED_IMM, instr);
+}
+
+void immed_set_value(u64 *instr, u16 immed)
+{
+ if (!immed_can_modify(*instr))
+ return;
+
+ if (unreg_is_imm(FIELD_GET(OP_IMMED_A_SRC, *instr))) {
+ *instr &= ~FIELD_PREP(OP_IMMED_A_SRC, 0xff);
+ *instr |= FIELD_PREP(OP_IMMED_A_SRC, immed & 0xff);
+ } else {
+ *instr &= ~FIELD_PREP(OP_IMMED_B_SRC, 0xff);
+ *instr |= FIELD_PREP(OP_IMMED_B_SRC, immed & 0xff);
+ }
+
+ *instr &= ~OP_IMMED_IMM;
+ *instr |= FIELD_PREP(OP_IMMED_IMM, immed >> 8);
+}
+
+void immed_add_value(u64 *instr, u16 offset)
+{
+ u16 val;
+
+ if (!immed_can_modify(*instr))
+ return;
+
+ val = immed_get_value(*instr);
+ immed_set_value(instr, val + offset);
+}
+
static u16 nfp_swreg_to_unreg(swreg reg, bool is_dst)
{
bool lm_id, lm_dec = false;
@@ -120,7 +209,8 @@ int swreg_to_unrestricted(swreg dst, swreg lreg, swreg rreg,
reg->dst = nfp_swreg_to_unreg(dst, true);
/* Decode source operands */
- if (swreg_type(lreg) == swreg_type(rreg))
+ if (swreg_type(lreg) == swreg_type(rreg) &&
+ swreg_type(lreg) != NN_REG_NONE)
return -EFAULT;
if (swreg_type(lreg) == NN_REG_GPR_B ||
@@ -200,7 +290,8 @@ int swreg_to_restricted(swreg dst, swreg lreg, swreg rreg,
reg->dst = nfp_swreg_to_rereg(dst, true, false, NULL);
/* Decode source operands */
- if (swreg_type(lreg) == swreg_type(rreg))
+ if (swreg_type(lreg) == swreg_type(rreg) &&
+ swreg_type(lreg) != NN_REG_NONE)
return -EFAULT;
if (swreg_type(lreg) == NN_REG_GPR_B ||