| /* |
| * Copyright 2015 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * |
| */ |
| #ifndef _CGS_LINUX_H |
| #define _CGS_LINUX_H |
| |
| #include "cgs_common.h" |
| |
| /** |
| * cgs_irq_source_set_func() - Callback for enabling/disabling interrupt sources |
| * @private_data: private data provided to cgs_add_irq_source |
| * @src_id: interrupt source ID |
| * @type: interrupt type |
| * @enabled: 0 = disable source, non-0 = enable source |
| * |
| * Return: 0 on success, -errno otherwise |
| */ |
| typedef int (*cgs_irq_source_set_func_t)(void *private_data, |
| unsigned src_id, unsigned type, |
| int enabled); |
| |
| /** |
| * cgs_irq_handler_func() - Interrupt handler callback |
| * @private_data: private data provided to cgs_add_irq_source |
| * @src_id: interrupt source ID |
| * @iv_entry: pointer to raw ih ring entry |
| * |
| * This callback runs in interrupt context. |
| * |
| * Return: 0 on success, -errno otherwise |
| */ |
| typedef int (*cgs_irq_handler_func_t)(void *private_data, |
| unsigned src_id, const uint32_t *iv_entry); |
| |
| /** |
| * cgs_add_irq_source() - Add an IRQ source |
| * @cgs_device: opaque device handle |
| * @src_id: interrupt source ID |
| * @num_types: number of interrupt types that can be independently enabled |
| * @set: callback function to enable/disable an interrupt type |
| * @handler: interrupt handler callback |
| * @private_data: private data to pass to callback functions |
| * |
| * The same IRQ source can be added only once. Adding an IRQ source |
| * indicates ownership of that IRQ source and all its IRQ types. |
| * |
| * Return: 0 on success, -errno otherwise |
| */ |
| typedef int (*cgs_add_irq_source_t)(void *cgs_device, unsigned src_id, |
| unsigned num_types, |
| cgs_irq_source_set_func_t set, |
| cgs_irq_handler_func_t handler, |
| void *private_data); |
| |
| /** |
| * cgs_irq_get() - Request enabling an IRQ source and type |
| * @cgs_device: opaque device handle |
| * @src_id: interrupt source ID |
| * @type: interrupt type |
| * |
| * cgs_irq_get and cgs_irq_put calls must be balanced. They count |
| * "references" to IRQ sources. |
| * |
| * Return: 0 on success, -errno otherwise |
| */ |
| typedef int (*cgs_irq_get_t)(void *cgs_device, unsigned src_id, unsigned type); |
| |
| /** |
| * cgs_irq_put() - Indicate IRQ source is no longer needed |
| * @cgs_device: opaque device handle |
| * @src_id: interrupt source ID |
| * @type: interrupt type |
| * |
| * cgs_irq_get and cgs_irq_put calls must be balanced. They count |
| * "references" to IRQ sources. Even after cgs_irq_put is called, the |
| * IRQ handler may still be called if there are more refecences to |
| * the IRQ source. |
| * |
| * Return: 0 on success, -errno otherwise |
| */ |
| typedef int (*cgs_irq_put_t)(void *cgs_device, unsigned src_id, unsigned type); |
| |
| struct cgs_os_ops { |
| /* IRQ handling */ |
| cgs_add_irq_source_t add_irq_source; |
| cgs_irq_get_t irq_get; |
| cgs_irq_put_t irq_put; |
| }; |
| |
| #define cgs_add_irq_source(dev,src_id,num_types,set,handler,private_data) \ |
| CGS_OS_CALL(add_irq_source,dev,src_id,num_types,set,handler, \ |
| private_data) |
| #define cgs_irq_get(dev,src_id,type) \ |
| CGS_OS_CALL(irq_get,dev,src_id,type) |
| #define cgs_irq_put(dev,src_id,type) \ |
| CGS_OS_CALL(irq_put,dev,src_id,type) |
| |
| #endif /* _CGS_LINUX_H */ |