1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
From bec2af878c58bbd12f9009948d4fc58ad9c7c1d3 Mon Sep 17 00:00:00 2001
From: Ioana Radulescu <ruxandra.radulescu@nxp.com>
Date: Fri, 5 May 2017 18:45:50 +0300
Subject: [PATCH] dpaa2-eth: Add Tx shaping API
DPNIs can be configured to accept a maximum Tx rate and
burst size. Add the MC API for controlling these parameters.
Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com>
---
drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h | 8 +++++++
drivers/net/ethernet/freescale/dpaa2/dpni.c | 29 +++++++++++++++++++++++++
drivers/net/ethernet/freescale/dpaa2/dpni.h | 15 +++++++++++++
3 files changed, 52 insertions(+)
--- a/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpni-cmd.h
@@ -315,6 +315,14 @@ struct dpni_rsp_get_link_state {
__le64 options;
};
+struct dpni_cmd_set_tx_shaping {
+ /* cmd word 0 */
+ __le16 max_burst_size;
+ __le16 pad[3];
+ /* cmd word 1 */
+ __le32 rate_limit;
+};
+
struct dpni_cmd_set_max_frame_length {
__le16 max_frame_length;
};
--- a/drivers/net/ethernet/freescale/dpaa2/dpni.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpni.c
@@ -926,6 +926,35 @@ int dpni_get_link_state(struct fsl_mc_io
}
/**
+ * dpni_set_tx_shaping() - Set the transmit shaping
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPNI object
+ * @tx_shaper: Tx shaping configuration
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpni_set_tx_shaping(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_tx_shaping_cfg *tx_shaper)
+{
+ struct fsl_mc_command cmd = { 0 };
+ struct dpni_cmd_set_tx_shaping *cmd_params;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPNI_CMDID_SET_TX_SHAPING,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpni_cmd_set_tx_shaping *)cmd.params;
+ cmd_params->max_burst_size = cpu_to_le16(tx_shaper->max_burst_size);
+ cmd_params->rate_limit = cpu_to_le32(tx_shaper->rate_limit);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
* dpni_set_max_frame_length() - Set the maximum received frame length.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
--- a/drivers/net/ethernet/freescale/dpaa2/dpni.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpni.h
@@ -555,6 +555,21 @@ int dpni_get_link_state(struct fsl_mc_io
u16 token,
struct dpni_link_state *state);
+/**
+ * struct dpni_tx_shaping - Structure representing DPNI tx shaping configuration
+ * @rate_limit: rate in Mbps
+ * @max_burst_size: burst size in bytes (up to 64KB)
+ */
+struct dpni_tx_shaping_cfg {
+ u32 rate_limit;
+ u16 max_burst_size;
+};
+
+int dpni_set_tx_shaping(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ const struct dpni_tx_shaping_cfg *tx_shaper);
+
int dpni_set_max_frame_length(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
|
