pm_num_pages(9)

💖 pm_num_pages(9) — Kernel API Manual, but make it bestie-friendly 💖

okay so welcome to the pm_num_pages(9) page from the Kernel API Manual, bestie. This one is short, iconic, and very “the hardware said what it said.” ✨

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✨ NAME ✨

pm_num_pages — calculate the number of pages of the payload memory. That's the name, and yes, it ate. 💅

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🎀 SYNOPSIS 🎀

the signature is giving exact C energy, so here it is verbatim, no cap:

unsigned int pm_num_pages (unsigned int mem_size , unsigned int pg_size
       );

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💅 ARGUMENTS 💅

• mem_size — the size of the payload memory. aka how big the payload memory is, bestie.
• pg_size — the size of each payload memory page. aka the size of one page. 🎀

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🦋 DESCRIPTION 🦋

okay so picture it: you’re calculating the number of pages, each of the given size, that fit in a memory of the specified size. slay.

and it’s respecting the HW requirement that the number of pages must be a multiple of 24. like, the hardware is literally not flexible on this one. multiple of 24, periodt. 💀

bestie, this is the whole point: the result still has to respect that HW requirement that the number of pages must be a multiple of 24. no skipping it, no “close enough.” 🫶

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🌸 SEE ALSO 🌸

bestie, the SEE ALSO section is literally a whole group chat. every single one is here:

• Kernel file: ./drivers/net/ethernet/chelsio/cxgb3/t3_hw.c
• t3_wait_op_done_val(9)
• t3_write_regs(9)
• t3_set_reg_field(9)
• t3_read_indirect(9)
• t3_mc7_bd_read(9)
• t3_mdio_change_bits(9)
• t3_phy_reset(9)
• t3_phy_advertise(9)
• t3_phy_advertise_fiber(9)
• t3_set_phy_speed_duplex(9)
• t3_seeprom_wp(9)
• get_vpd_params(9)
• sf1_read(9)
• sf1_write(9)
• flash_wait_op(9)
• t3_read_flash(9)
• t3_write_flash(9)
• t3_get_tp_version(9)
• t3_check_tpsram_version(9)
• t3_check_tpsram(9)
• t3_get_fw_version(9)
• t3_check_fw_version(9)
• t3_flash_erase_sectors(9)
• t3_load_fw(9)
• t3_cim_ctl_blk_read(9)
• t3_link_changed(9)
• t3_link_start(9)
• t3_set_vlan_accel(9)
• t3_handle_intr_status(9)
• t3_intr_enable(9)
• t3_intr_disable(9)
• t3_intr_clear(9)
• t3_port_intr_enable(9)
• t3_port_intr_disable(9)
• t3_port_intr_clear(9)
• t3_sge_write_context(9)
• clear_sge_ctxt(9)
• t3_sge_init_ecntxt(9)
• t3_sge_init_flcntxt(9)
• t3_sge_init_rspcntxt(9)
• t3_sge_init_cqcntxt(9)
• t3_sge_enable_ecntxt(9)
• t3_sge_disable_fl(9)
• t3_sge_disable_rspcntxt(9)
• t3_sge_disable_cqcntxt(9)
• t3_sge_cqcntxt_op(9)
• t3_config_rss(9)
• t3_tp_set_offload_mode(9)
• partition_mem(9)
• tp_set_timers(9)
• t3_tp_set_coalescing_size(9)
• t3_tp_set_max_rxsize(9)
• t3_load_mtus(9)
• t3_tp_get_mib_stats(9)
• t3_set_proto_sram(9)
• t3_config_sched(9)
• get_pci_mode(9)
• init_link_config(9)
• mc7_calc_size(9)

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and that’s the page, bestie 🫶 source/version: ./drivers/net/ethernet/chelsio..., date: October 2026, footer vibe: pm_num_pages(9). byeee 💅✨