[RFC 4/9] staging: dpaa2-switch: setup dpio

Ioana Ciornei
2020-11-04T16:57:40Z

Setup interrupts on the control interface queues. We do not force an
exact affinity between the interrupts received from a specific queue and
a cpu.

Also, the DPSW object version is incremented since the
dpsw_ctrl_if_set_queue() API is introduced in the v8.4 object
(first seen in the MC 10.19.0 firmware).

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
---
drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h | 17 +++++-
drivers/staging/fsl-dpaa2/ethsw/dpsw.c | 33 +++++++++++
drivers/staging/fsl-dpaa2/ethsw/dpsw.h | 23 ++++++++
drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 65 ++++++++++++++++++++++
drivers/staging/fsl-dpaa2/ethsw/ethsw.h | 1 +
5 files changed, 138 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
index e27e86d5d4fb..9caff864ae3e 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw-cmd.h
@@ -12,7 +12,7 @@

/* DPSW Version */
#define DPSW_VER_MAJOR 8
-#define DPSW_VER_MINOR 1
+#define DPSW_VER_MINOR 4

#define DPSW_CMD_BASE_VERSION 1
#define DPSW_CMD_ID_OFFSET 4
@@ -77,6 +77,7 @@

#define DPSW_CMDID_CTRL_IF_GET_ATTR DPSW_CMD_ID(0x0A0)
#define DPSW_CMDID_CTRL_IF_SET_POOLS DPSW_CMD_ID(0x0A1)
+#define DPSW_CMDID_CTRL_IF_SET_QUEUE DPSW_CMD_ID(0x0A6)

/* Macros for accessing command fields smaller than 1byte */
#define DPSW_MASK(field) \
@@ -389,6 +390,20 @@ struct dpsw_cmd_ctrl_if_set_pools {
__le16 buffer_size[DPSW_MAX_DPBP];
};

+#define DPSW_DEST_TYPE_SHIFT 0
+#define DPSW_DEST_TYPE_SIZE 4
+
+struct dpsw_cmd_ctrl_if_set_queue {
+ __le32 dest_id;
+ u8 dest_priority;
+ u8 pad;
+ /* from LSB: dest_type:4 */
+ u8 dest_type;
+ u8 qtype;
+ __le64 user_ctx;
+ __le32 options;
+};
+
struct dpsw_rsp_get_api_version {
__le16 version_major;
__le16 version_minor;
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
index 01ebdb12adec..785140d4652c 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.c
@@ -1244,6 +1244,39 @@ int dpsw_ctrl_if_set_pools(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
return mc_send_command(mc_io, &cmd);
}

+/**
+ * dpsw_ctrl_if_set_queue() - Set Rx queue configuration
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of dpsw object
+ * @qtype: dpsw_queue_type of the targeted queue
+ * @cfg: Rx queue configuration
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpsw_ctrl_if_set_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ enum dpsw_queue_type qtype,
+ const struct dpsw_ctrl_if_queue_cfg *cfg)
+{
+ struct dpsw_cmd_ctrl_if_set_queue *cmd_params;
+ struct fsl_mc_command cmd = { 0 };
+
+ cmd.header = mc_encode_cmd_header(DPSW_CMDID_CTRL_IF_SET_QUEUE,
+ cmd_flags,
+ token);
+ cmd_params = (struct dpsw_cmd_ctrl_if_set_queue *)cmd.params;
+ cmd_params->dest_id = cpu_to_le32(cfg->dest_cfg.dest_id);
+ cmd_params->dest_priority = cfg->dest_cfg.priority;
+ cmd_params->qtype = qtype;
+ cmd_params->user_ctx = cpu_to_le64(cfg->user_ctx);
+ cmd_params->options = cpu_to_le32(cfg->options);
+ dpsw_set_field(cmd_params->dest_type,
+ DEST_TYPE,
+ cfg->dest_cfg.dest_type);
+
+ return mc_send_command(mc_io, &cmd);
+}
+
/**
* dpsw_get_api_version() - Get Data Path Switch API version
* @mc_io: Pointer to MC portal's I/O object
diff --git a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
index 5ad7c0634992..718242ea7d87 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/dpsw.h
@@ -222,6 +222,29 @@ struct dpsw_ctrl_if_pools_cfg {
int dpsw_ctrl_if_set_pools(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
const struct dpsw_ctrl_if_pools_cfg *cfg);

+#define DPSW_CTRL_IF_QUEUE_OPT_USER_CTX 0x00000001
+#define DPSW_CTRL_IF_QUEUE_OPT_DEST 0x00000002
+
+enum dpsw_ctrl_if_dest {
+ DPSW_CTRL_IF_DEST_NONE = 0,
+ DPSW_CTRL_IF_DEST_DPIO = 1,
+};
+
+struct dpsw_ctrl_if_dest_cfg {
+ enum dpsw_ctrl_if_dest dest_type;
+ int dest_id;
+ u8 priority;
+};
+
+struct dpsw_ctrl_if_queue_cfg {
+ u32 options;
+ u64 user_ctx;
+ struct dpsw_ctrl_if_dest_cfg dest_cfg;
+};
+
+int dpsw_ctrl_if_set_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
+ enum dpsw_queue_type qtype,
+ const struct dpsw_ctrl_if_queue_cfg *cfg);
/**
* enum dpsw_action - Action selection for special/control frames
* @DPSW_ACTION_DROP: Drop frame
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
index d81961d36821..f8f972421fea 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -1607,6 +1607,64 @@ static void dpaa2_switch_destroy_rings(struct ethsw_core *ethsw)
dpaa2_io_store_destroy(ethsw->fq[i].store);
}

+static int dpaa2_switch_setup_dpio(struct ethsw_core *ethsw)
+{
+ struct dpsw_ctrl_if_queue_cfg queue_cfg;
+ struct dpaa2_io_notification_ctx *nctx;
+ int err, i, j;
+
+ for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++) {
+ nctx = &ethsw->fq[i].nctx;
+
+ /* Register a new software context for the FQID.
+ * By using NULL as the first parameter, we specify that we do
+ * not care on which cpu are interrupts received for this queue
+ */
+ nctx->is_cdan = 0;
+ nctx->id = ethsw->fq[i].fqid;
+ nctx->desired_cpu = DPAA2_IO_ANY_CPU;
+ err = dpaa2_io_service_register(NULL, nctx, ethsw->dev);
+ if (err) {
+ err = -EPROBE_DEFER;
+ goto err_register;
+ }
+
+ queue_cfg.options = DPSW_CTRL_IF_QUEUE_OPT_DEST |
+ DPSW_CTRL_IF_QUEUE_OPT_USER_CTX;
+ queue_cfg.dest_cfg.dest_type = DPSW_CTRL_IF_DEST_DPIO;
+ queue_cfg.dest_cfg.dest_id = nctx->dpio_id;
+ queue_cfg.dest_cfg.priority = 0;
+ queue_cfg.user_ctx = nctx->qman64;
+
+ err = dpsw_ctrl_if_set_queue(ethsw->mc_io, 0,
+ ethsw->dpsw_handle,
+ ethsw->fq[i].type,
+ &queue_cfg);
+ if (err)
+ goto err_set_queue;
+ }
+
+ return 0;
+
+err_set_queue:
+ dpaa2_io_service_deregister(NULL, nctx, ethsw->dev);
+err_register:
+ for (j = 0; j < i; j++)
+ dpaa2_io_service_deregister(NULL, &ethsw->fq[j].nctx,
+ ethsw->dev);
+
+ return err;
+}
+
+static void dpaa2_switch_free_dpio(struct ethsw_core *ethsw)
+{
+ int i;
+
+ for (i = 0; i < DPAA2_SWITCH_RX_NUM_FQS; i++)
+ dpaa2_io_service_deregister(NULL, &ethsw->fq[i].nctx,
+ ethsw->dev);
+}
+
static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
{
int err;
@@ -1625,8 +1683,14 @@ static int dpaa2_switch_ctrl_if_setup(struct ethsw_core *ethsw)
if (err)
goto err_free_dpbp;

+ err = dpaa2_switch_setup_dpio(ethsw);
+ if (err)
+ goto err_destroy_rings;
+
return 0;

+err_destroy_rings:
+ dpaa2_switch_destroy_rings(ethsw);
err_free_dpbp:
dpaa2_switch_free_dpbp(ethsw);

@@ -1813,6 +1877,7 @@ static void dpaa2_switch_takedown(struct fsl_mc_device *sw_dev)

static void dpaa2_switch_ctrl_if_teardown(struct ethsw_core *ethsw)
{
+ dpaa2_switch_free_dpio(ethsw);
dpaa2_switch_destroy_rings(ethsw);
dpaa2_switch_free_dpbp(ethsw);
}
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
index b476f9ac4c55..c78ee5409b8a 100644
--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.h
@@ -61,6 +61,7 @@ struct dpaa2_switch_fq {
struct ethsw_core *ethsw;
enum dpsw_queue_type type;
struct dpaa2_io_store *store;
+ struct dpaa2_io_notification_ctx nctx;
u32 fqid;
};

--
2.28.0