From de0fa9842d52e4e80576d378f32aa9ca76a4270b Mon Sep 17 00:00:00 2001 From: Stuart Yoder Date: Mon, 11 Apr 2016 11:48:54 -0500 Subject: [PATCH 168/226] staging: fsl-mc: update dpbp binary interface to v2.2 Signed-off-by: Stuart Yoder Acked-by: German Rivera Signed-off-by: Greg Kroah-Hartman --- 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(-) --- 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 /* 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 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; +} --- 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 */ --- 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 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_' 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 */