From: Stuart Yoder <stuart.yoder@xxxxxxx>
Signed-off-by: Stuart Yoder <stuart.yoder@xxxxxxx>
---
drivers/staging/fsl-mc/bus/dpbp.c | 77 ++++++++++++++++++++++++++++-
drivers/staging/fsl-mc/include/dpbp-cmd.h | 4 +-
drivers/staging/fsl-mc/include/dpbp.h | 51 ++++++++++++++++++-
3 files changed, 127 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/fsl-mc/bus/dpbp.c b/drivers/staging/fsl-mc/bus/dpbp.c
index 2d97173..c31fe1b 100644
--- a/drivers/staging/fsl-mc/bus/dpbp.c
+++ b/drivers/staging/fsl-mc/bus/dpbp.c
@@ -293,7 +293,7 @@ int dpbp_set_irq(struct fsl_mc_io *mc_io,
cmd.params[0] |= mc_enc(0, 8, irq_index);
cmd.params[0] |= mc_enc(32, 32, irq_cfg->val);
cmd.params[1] |= mc_enc(0, 64, irq_cfg->addr);
- cmd.params[2] |= mc_enc(0, 32, irq_cfg->user_irq_id);
+ cmd.params[2] |= mc_enc(0, 32, irq_cfg->irq_num);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
@@ -334,7 +334,7 @@ int dpbp_get_irq(struct fsl_mc_io *mc_io,
/* retrieve response parameters */
irq_cfg->val = (u32)mc_dec(cmd.params[0], 0, 32);
irq_cfg->addr = (u64)mc_dec(cmd.params[1], 0, 64);
- irq_cfg->user_irq_id = (int)mc_dec(cmd.params[2], 0, 32);
+ irq_cfg->irq_num = (int)mc_dec(cmd.params[2], 0, 32);
*type = (int)mc_dec(cmd.params[2], 32, 32);
return 0;
}
@@ -502,6 +502,7 @@ int dpbp_get_irq_status(struct fsl_mc_io *mc_io,
/* prepare command */
cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_IRQ_STATUS,
cmd_flags, token);
+ cmd.params[0] |= mc_enc(0, 32, *status);
cmd.params[0] |= mc_enc(32, 8, irq_index);
/* send command to mc*/
@@ -580,3 +581,75 @@ int dpbp_get_attributes(struct fsl_mc_io *mc_io,
return 0;
}
EXPORT_SYMBOL(dpbp_get_attributes);
+
+/**
+ * dpbp_set_notifications() - Set notifications towards software
+ * @mc_io: Pointer to MC portal's I/O object
+ * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
+ * @token: Token of DPBP object
+ * @cfg: notifications configuration
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_set_notifications(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ struct dpbp_notification_cfg *cfg)
+{
+ struct mc_command cmd = { 0 };
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_SET_NOTIFICATIONS,
+ cmd_flags,
+ token);
+
+ cmd.params[0] |= mc_enc(0, 32, cfg->depletion_entry);
+ cmd.params[0] |= mc_enc(32, 32, cfg->depletion_exit);
+ cmd.params[1] |= mc_enc(0, 32, cfg->surplus_entry);
+ cmd.params[1] |= mc_enc(32, 32, cfg->surplus_exit);
+ cmd.params[2] |= mc_enc(0, 16, cfg->options);
+ cmd.params[3] |= mc_enc(0, 64, cfg->message_ctx);
+ cmd.params[4] |= mc_enc(0, 64, cfg->message_iova);
+
+ /* send command to mc*/
+ return mc_send_command(mc_io, &cmd);
+}
+
+/**
+ * dpbp_get_notifications() - Get the notifications 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 DPBP object
+ * @cfg: notifications configuration
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_notifications(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ struct dpbp_notification_cfg *cfg)
+{
+ struct mc_command cmd = { 0 };
+ int err;
+
+ /* prepare command */
+ cmd.header = mc_encode_cmd_header(DPBP_CMDID_GET_NOTIFICATIONS,
+ cmd_flags,
+ token);
+
+ /* send command to mc*/
+ err = mc_send_command(mc_io, &cmd);
+ if (err)
+ return err;
+
+ /* retrieve response parameters */
+ cfg->depletion_entry = (u32)mc_dec(cmd.params[0], 0, 32);
+ cfg->depletion_exit = (u32)mc_dec(cmd.params[0], 32, 32);
+ cfg->surplus_entry = (u32)mc_dec(cmd.params[1], 0, 32);
+ cfg->surplus_exit = (u32)mc_dec(cmd.params[1], 32, 32);
+ cfg->options = (u16)mc_dec(cmd.params[2], 0, 16);
+ cfg->message_ctx = (u64)mc_dec(cmd.params[3], 0, 64);
+ cfg->message_iova = (u64)mc_dec(cmd.params[4], 0, 64);
+
+ return 0;
+}
diff --git a/drivers/staging/fsl-mc/include/dpbp-cmd.h b/drivers/staging/fsl-mc/include/dpbp-cmd.h
index efa9bf3..c57b454 100644
--- a/drivers/staging/fsl-mc/include/dpbp-cmd.h
+++ b/drivers/staging/fsl-mc/include/dpbp-cmd.h
@@ -34,7 +34,7 @@
/* DPBP Version */
#define DPBP_VER_MAJOR 2
-#define DPBP_VER_MINOR 1
+#define DPBP_VER_MINOR 2
/* Command IDs */
#define DPBP_CMDID_CLOSE 0x800
@@ -57,4 +57,6 @@
#define DPBP_CMDID_GET_IRQ_STATUS 0x016
#define DPBP_CMDID_CLEAR_IRQ_STATUS 0x017
+#define DPBP_CMDID_SET_NOTIFICATIONS 0x01b0
+#define DPBP_CMDID_GET_NOTIFICATIONS 0x01b1
#endif /* _FSL_DPBP_CMD_H */
diff --git a/drivers/staging/fsl-mc/include/dpbp.h b/drivers/staging/fsl-mc/include/dpbp.h
index 37ed951..e14e85a 100644
--- a/drivers/staging/fsl-mc/include/dpbp.h
+++ b/drivers/staging/fsl-mc/include/dpbp.h
@@ -85,12 +85,12 @@ int dpbp_reset(struct fsl_mc_io *mc_io,
* struct dpbp_irq_cfg - IRQ configuration
* @addr: Address that must be written to signal a message-based interrupt
* @val: Value to write into irq_addr address
- * @user_irq_id: A user defined number associated with this IRQ
+ * @irq_num: A user defined number associated with this IRQ
*/
struct dpbp_irq_cfg {
u64 addr;
u32 val;
- int user_irq_id;
+ int irq_num;
};
int dpbp_set_irq(struct fsl_mc_io *mc_io,
@@ -168,6 +168,53 @@ int dpbp_get_attributes(struct fsl_mc_io *mc_io,
u16 token,
struct dpbp_attr *attr);
+/**
+ * DPBP notifications options
+ */
+
+/**
+ * BPSCN write will attempt to allocate into a cache (coherent write)
+ */
+#define DPBP_NOTIF_OPT_COHERENT_WRITE 0x00000001
+
+/**
+ * struct dpbp_notification_cfg - Structure representing DPBP notifications
+ * towards software
+ * @depletion_entry: below this threshold the pool is "depleted";
+ * set it to '0' to disable it
+ * @depletion_exit: greater than or equal to this threshold the pool exit its
+ * "depleted" state
+ * @surplus_entry: above this threshold the pool is in "surplus" state;
+ * set it to '0' to disable it
+ * @surplus_exit: less than or equal to this threshold the pool exit its
+ * "surplus" state
+ * @message_iova: MUST be given if either 'depletion_entry' or 'surplus_entry'
+ * is not '0' (enable); I/O virtual address (must be in DMA-able memory),
+ * must be 16B aligned.
+ * @message_ctx: The context that will be part of the BPSCN message and will
+ * be written to 'message_iova'
+ * @options: Mask of available options; use 'DPBP_NOTIF_OPT_<X>' values
+ */
+struct dpbp_notification_cfg {
+ u32 depletion_entry;
+ u32 depletion_exit;
+ u32 surplus_entry;
+ u32 surplus_exit;
+ u64 message_iova;
+ u64 message_ctx;
+ u16 options;
+};
+
+int dpbp_set_notifications(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ struct dpbp_notification_cfg *cfg);
+
+int dpbp_get_notifications(struct fsl_mc_io *mc_io,
+ u32 cmd_flags,
+ u16 token,
+ struct dpbp_notification_cfg *cfg);
+
/** @} */
#endif /* __FSL_DPBP_H */
--
1.7.9.5
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