John Baldwin 1c3996e87f acpi/pci/vmd: Fix a nit with nested resource mapping requests ... Some bus drivers use rmans to suballocate resources to child devices. When the driver for a child device requests a mapping for a suballocated resource, the bus driver translates this into a mapping request for a suitable subrange of the original resource the bus driver allocated from its parent. This nested mapping request should look like any other resource mapping request being made by the bus device (i.e. as if the bus device had called bus_map_resource() or bus_alloc_resource() with RF_ACTIVE). I had slightly flubbed this last bit though since the direct use of bus_generic_map/unmap_resource passed up the original child device (second argument to the underlying kobj interface). While this is currently harmless, it is not strictly correct as the resource being mapped is owned by the bus device, not the child and can break for other bus drivers in the future. Instead, use bus_map/unmap_resource for the nested request where the requesting device is now the bus device that owns the parent resource. Reviewed by: imp Fixes: 0e1246e33461 acpi: Cleanup handling of suballocated resources Fixes: b377ff8110e3 pcib: Refine handling of resources allocated from bridge windows Fixes: d79b6b8ec267 pci_host_generic: Don't rewrite resource start address for translation Fixes: d714e73f7895 vmd: Use bus_generic_rman_* for PCI bus and memory resources Differential Revision: https://reviews.freebsd.org/D45433 (cherry picked from commit 98056127ddfa36720bcf46edc09843c867784bcb)		2025-02-27 08:09:23 -05:00
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vmd.c	acpi/pci/vmd: Fix a nit with nested resource mapping requests	2025-02-27 08:09:23 -05:00
vmd.h	vmd: Use bus_read/write_* instead of bus_space_read/write_*	2024-04-08 10:57:24 -07:00