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4  * SPDX-License-Identifier: Apache-2.0
13  * @defgroup device-mmio Device memory-mapped IO management
16  * Definitions and helper macros for managing driver memory-mapped
20  * including this separately may be needed for arch-level driver code
28 /* Storing MMIO addresses in RAM is a system-wide decision based on
34  * If we have PCIE enabled, this does mean that non-PCIE drivers may waste
85  * The mapped linear address will have read-write access to supervisor mode.
102 	 * read-write access.  in device_map()
140  * @defgroup device-mmio-single Single MMIO region macros
141  * @ingroup device-mmio
175  * No build-time initialization of this memory is necessary; it
188  * Return a pointer to the RAM-based storage area for a device's MMIO
197 #define DEVICE_MMIO_RAM_PTR(device)	(mm_reg_t *)((device)->data)
233  * Return a pointer to the ROM-based storage area for a device's MMIO
242 	((struct z_device_mmio_rom *)((dev)->config))
247  * Initialize MMIO-related information within a specific instance of
288 		   DEVICE_MMIO_ROM_PTR(dev)->phys_addr, \
289 		   DEVICE_MMIO_ROM_PTR(dev)->size, \
300  * For most microcontrollers MMIO addresses can be fixed values known at
301  * build time, and we can store this in device->config, residing in ROM.
304  * because they need to be memory-mapped into the address space, enumerated
317 #define DEVICE_MMIO_GET(dev)	(DEVICE_MMIO_ROM_PTR(dev)->addr)
322  * @defgroup device-mmio-named Named MMIO region macros
323  * @ingroup device-mmio
360  * No build-time initialization of this memory is necessary; it
383 		(&(DEV_DATA(dev)->name))
424  * Return a pointer to the ROM-based storage area for a device's MMIO
435 #define DEVICE_MMIO_NAMED_ROM_PTR(dev, name) (&(DEV_CFG(dev)->name))
440  * Initialize MMIO-related information within a specific instance of
474  * that will have two DT-defined regions named 'chip' and 'dale':
480  *         reg-names = "chip", "dale";
536 		   (DEVICE_MMIO_NAMED_ROM_PTR((dev), name)->phys_addr), \
537 		   (DEVICE_MMIO_NAMED_ROM_PTR((dev), name)->size), \
569 		((DEVICE_MMIO_NAMED_ROM_PTR((dev), name))->addr)
575  * @defgroup device-mmio-toplevel Top-level MMIO region macros
576  * @ingroup device-mmio
579  * associate struct device with a driver instance. Top-level storage
584  * Currently PCIe devices are not well-supported with this set of macros.
597  * @brief Declare top-level storage for MMIO information, global scope
602  * Instead, this is a top-level declaration for the driver's C file.
607  * @param node_id Device-tree node identifier for this region
626  * Provide an extern reference to a top-level MMIO region
628  * If a top-level MMIO region defined with DEVICE_MMIO_DEFINE needs to be
634  * @param name Name of the top-level MMIO region
649  * @brief Declare top-level storage for MMIO information, static scope
654  * Instead, this is a top-level declaration for the driver's C file.
657  * @param name Name of the top-level MMIO region
658  * @param node_id Device-tree node identifier for this region
686  * Return a pointer to the ROM-based storage area for a toplevel MMIO region.
711  * @param name Name of the top-level MMIO region
726  * @brief Obtain the MMIO address for a device declared top-level
730  * @param name Name of the top-level MMIO region