STRUCT HBM_CLIENT_DMA_MAP_REQUEST(9)

struct hbm_client_dma_map_request(9) 👑

okay so bestie, this is the Kernel API Manual page for struct hbm_client_dma_map_request, and we're gonna get you comfy with it. 💖

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🌸 NAME 🌸

struct hbm_client_dma_map_request — client dma map request from host to fw. periodt. 💅

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🦋 SYNOPSIS 🦋

here's the struct in all its glory:

       struct hbm_client_dma_map_request {
           u8 hbm_cmd;
           u8 client_buffer_id;
           u8 reserved[2];
           u32 address_lsb;
           u32 address_msb;
           u32 size;
        };

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💅 Members 💅

• hbm_cmd — bus message command header. 👑
• client_buffer_id — client buffer id. 🎀
• reserved — reserved. (the struct spells it reserved[2] — iykyk) 💀
• address_lsb — DMA address LSB. ⭐
• address_msb — DMA address MSB. ⭐
• size — DMA size. 🌈

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👀 SEE ALSO 👀

Kernel file: ./drivers/misc/mei/hw.h

bestie, the page also points you at all of these:

• enum mei_hbm_status(9)
• enum mei_ext_hdr_type(9)
• struct mei_ext_hdr(9)
• struct mei_ext_meta_hdr(9)
• struct mei_ext_hdr_vtag(9)
• mei_ext_begin(9)
• mei_ext_last(9)
• struct mei_ext_hdr_gsc_h2f(9)
• struct mei_ext_hdr_gsc_f2h(9)
• mei_ext_next(9)
• mei_ext_hdr_len(9)
• struct mei_msg_hdr(9)
• struct mei_hbm_cl_cmd(9)
• enum hbm_host_enum_flags(9)
• struct hbm_host_enum_request(9)
• struct mei_client_properties(9)
• struct hbm_add_client_request(9)
• struct hbm_add_client_response(9)
• struct hbm_power_gate(9)
• struct hbm_client_connect_request(9)
• struct hbm_client_connect_response(9)
• struct hbm_notification_request(9)
• struct hbm_notification_response(9)
• struct hbm_notification(9)
• struct hbm_dma_mem_dscr(9)
• struct hbm_dma_setup_request(9)
• struct hbm_dma_setup_response(9)
• struct hbm_dma_ring_ctrl(9)
• struct hbm_capability_request(9)
• struct hbm_capability_response(9)
• struct hbm_client_dma_unmap_request(9)
• struct hbm_client_dma_response(9)

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okay that's the whole vibe check, bestie. this one's signed off from the source/version ./drivers/misc/mei and dated October 2026. 💖✨