pdc_model_capabilities(9)

💅 pdc_model_capabilities — the kernel API manual page, bestie edition 🎀

okay so you're reading pdc_model_capabilities(9) and honestly? iconic of you. this is the vibe check function for your whole platform. let's get into it ✨

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🌸 NAME 🌸

pdc_model_capabilities — literally just returns the platform capabilities. that's it. that's the whole job. and she ate 💅

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✨ SYNOPSIS ✨

int pdc_model_capabilities (unsigned long *capabilities );

yes bestie, that's a pointer to an unsigned long and it comes back as an int. we love a function with range 🫶

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🎀 ARGUMENTS 🎀

• capabilities — the return buffer. that's where all the tea gets dropped. you hand her a spot in memory, she fills it in. main character energy fr fr 💖

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🦋 DESCRIPTION 🦋

so what does she actually do? she returns info about platform support for:

• 32- and/or 64-bit OSes (both? either? she'll tell you 👀)
• IO-PDIR coherency
• virtual aliasing

that's the whole menu. three little facts, zero drama, highkey useful 🌈 no cap.

ngl, that's the entire description in the original too — she's a short king of a manpage and we respect it 💀

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🔥 SEE ALSO 🔥

okay this is where it gets unhinged. the Kernel file ./arch/parisc/kernel/firmware.c is where the magic lives, and these are all her besties — the whole group chat, no one left out, periodt:

• f_extend(9)
• convert_to_wide(9)
• set_firmware_width(9)
• pdc_emergency_unlock(9)
• pdc_add_valid(9)
• pdc_instr(9)
• pdc_chassis_info(9)
• pdc_pat_chassis_send_log(9)
• pdc_chassis_disp(9)
• __pdc_cpu_rendezvous(9)
• pdc_cpu_rendezvous_lock(9)
• pdc_cpu_rendezvous_unlock(9)
• pdc_pat_get_PDC_entrypoint(9)
• pdc_chassis_warn(9)
• pdc_coproc_cfg(9)
• pdc_iodc_read(9)
• pdc_system_map_find_mods(9)
• pdc_system_map_find_addrs(9)
• pdc_model_info(9)
• pdc_model_sysmodel(9)
• pdc_model_versions(9)
• pdc_model_cpuid(9)
• pdc_model_platform_info(9)
• pdc_cache_info(9)
• pdc_spaceid_bits(9)
• pdc_btlb_info(9)
• pdc_mem_map_hpa(9)
• pdc_lan_station_id(9)
• pdc_stable_read(9)
• pdc_stable_write(9)
• pdc_stable_get_size(9)
• pdc_stable_verify_contents(9)
• pdc_stable_initialize(9)
• pdc_get_initiator(9)
• pdc_pci_irt_size(9)
• pdc_pci_irt(9)
• pdc_pci_config_read(9)
• pdc_pci_config_write(9)
• pdc_tod_read(9)
• pdc_pim_toc11(9)
• pdc_pim_toc20(9)
• pdc_tod_set(9)
• pdc_iodc_print(9)
• pdc_iodc_getc(9)
• pdc_pat_cell_get_number(9)
• pdc_pat_cell_module(9)
• pdc_pat_cell_info(9)
• pdc_pat_cpu_get_number(9)
• pdc_pat_get_irt_size(9)
• pdc_pat_get_irt(9)
• pdc_pat_pd_get_addr_map(9)
• pdc_pat_pd_get_pdc_revisions(9)
• pdc_pat_pd_get_platform_counter(9)
• pdc_pat_io_pci_cfg_read(9)
• pdc_pat_io_pci_cfg_write(9)
• pdc_pat_mem_pdt_info(9)
• pdc_pat_mem_pdt_cell_info(9)
• pdc_pat_mem_read_cell_pdt(9)
• pdc_pat_mem_read_pd_pdt(9)
• pdc_pat_mem_get_dimm_phys_location(9)

like… 60 entries. she's thorough. she's organized. she's giving study-group-notes energy 📚💜

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anyway bestie, that's the whole page 💖 this one lives in ./arch/parisc/kernel, dated October 2026, and it's filed under pdc_model_capabilities(9) in the Kernel API Manual — go forth and vibe check those platform capabilities, iykyk 🧚‍♀️⭐