android_kernel_samsung_sm8650-modules/hw/qca6390/v1/buffer_addr_info.h

/*
 * Copyright (c) 2018 The Linux Foundation. All rights reserved.
 *
 * Permission to use, copy, modify, and/or distribute this software for
 * any purpose with or without fee is hereby granted, provided that the
 * above copyright notice and this permission notice appear in all
 * copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _BUFFER_ADDR_INFO_H_
#define _BUFFER_ADDR_INFO_H_
#if !defined(__ASSEMBLER__)
#endif


// ################ START SUMMARY #################
//
//	Dword	Fields
//	0	buffer_addr_31_0[31:0]
//	1	buffer_addr_39_32[7:0], return_buffer_manager[10:8], sw_buffer_cookie[31:11]
//
// ################ END SUMMARY #################

#define NUM_OF_DWORDS_BUFFER_ADDR_INFO 2

struct buffer_addr_info {
             uint32_t buffer_addr_31_0                : 32; //[31:0]
             uint32_t buffer_addr_39_32               :  8, //[7:0]
                      return_buffer_manager           :  3, //[10:8]
                      sw_buffer_cookie                : 21; //[31:11]
};

/*

buffer_addr_31_0
			
			Address (lower 32 bits) of the MSDU buffer OR
			MSDU_EXTENSION descriptor OR Link Descriptor
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			<legal all>

buffer_addr_39_32
			
			Address (upper 8 bits) of the MSDU buffer OR
			MSDU_EXTENSION descriptor OR Link Descriptor
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			<legal all>

return_buffer_manager
			
			Consumer: WBM
			
			Producer: SW/FW
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			
			
			Indicates to which buffer manager the buffer OR
			MSDU_EXTENSION descriptor OR link descriptor that is being
			pointed to shall be returned after the frame has been
			processed. It is used by WBM for routing purposes.
			
			
			
			<enum 0 WBM_IDLE_BUF_LIST> This buffer shall be returned
			to the WMB buffer idle list
			
			<enum 1 WBM_IDLE_DESC_LIST> This buffer shall be
			returned to the WMB idle link descriptor idle list
			
			<enum 2 FW_BM> This buffer shall be returned to the FW
			
			<enum 3 SW0_BM> This buffer shall be returned to the SW,
			ring 0
			
			<enum 4 SW1_BM> This buffer shall be returned to the SW,
			ring 1
			
			<enum 5 SW2_BM> This buffer shall be returned to the SW,
			ring 2
			
			<enum 6 SW3_BM> This buffer shall be returned to the SW,
			ring 3
			
			<enum 7 SW4_BM> This buffer shall be returned to the SW,
			ring 4
			
			
			
			<legal all>

sw_buffer_cookie
			
			Cookie field exclusively used by SW. 
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			
			
			HW ignores the contents, accept that it passes the
			programmed value on to other descriptors together with the
			physical address 
			
			
			
			Field can be used by SW to for example associate the
			buffers physical address with the virtual address
			
			The bit definitions as used by SW are within SW HLD
			specification
			
			
			
			NOTE:
			
			The two most significant bits can have a special meaning
			in case this struct is embedded in a TX_MPDU_DETAILS STRUCT,
			and field transmit_bw_restriction is set
			
			Sw_buffer_cookie[20:19] = 2'b00: 20 MHz TX only
			
			Sw_buffer_cookie[20:19] = 2'b01: 40 MHz TX only
			
			Sw_buffer_cookie[20:19] = 2'b10: 80 MHz TX only
			
			Sw_buffer_cookie[20:19] = 2'b11: 160 MHz TX only
			
			
			
			<legal all>
*/


/* Description		BUFFER_ADDR_INFO_0_BUFFER_ADDR_31_0
			
			Address (lower 32 bits) of the MSDU buffer OR
			MSDU_EXTENSION descriptor OR Link Descriptor
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			<legal all>
*/
#define BUFFER_ADDR_INFO_0_BUFFER_ADDR_31_0_OFFSET                   0x00000000
#define BUFFER_ADDR_INFO_0_BUFFER_ADDR_31_0_LSB                      0
#define BUFFER_ADDR_INFO_0_BUFFER_ADDR_31_0_MASK                     0xffffffff

/* Description		BUFFER_ADDR_INFO_1_BUFFER_ADDR_39_32
			
			Address (upper 8 bits) of the MSDU buffer OR
			MSDU_EXTENSION descriptor OR Link Descriptor
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			<legal all>
*/
#define BUFFER_ADDR_INFO_1_BUFFER_ADDR_39_32_OFFSET                  0x00000004
#define BUFFER_ADDR_INFO_1_BUFFER_ADDR_39_32_LSB                     0
#define BUFFER_ADDR_INFO_1_BUFFER_ADDR_39_32_MASK                    0x000000ff

/* Description		BUFFER_ADDR_INFO_1_RETURN_BUFFER_MANAGER
			
			Consumer: WBM
			
			Producer: SW/FW
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			
			
			Indicates to which buffer manager the buffer OR
			MSDU_EXTENSION descriptor OR link descriptor that is being
			pointed to shall be returned after the frame has been
			processed. It is used by WBM for routing purposes.
			
			
			
			<enum 0 WBM_IDLE_BUF_LIST> This buffer shall be returned
			to the WMB buffer idle list
			
			<enum 1 WBM_IDLE_DESC_LIST> This buffer shall be
			returned to the WMB idle link descriptor idle list
			
			<enum 2 FW_BM> This buffer shall be returned to the FW
			
			<enum 3 SW0_BM> This buffer shall be returned to the SW,
			ring 0
			
			<enum 4 SW1_BM> This buffer shall be returned to the SW,
			ring 1
			
			<enum 5 SW2_BM> This buffer shall be returned to the SW,
			ring 2
			
			<enum 6 SW3_BM> This buffer shall be returned to the SW,
			ring 3
			
			<enum 7 SW4_BM> This buffer shall be returned to the SW,
			ring 4
			
			
			
			<legal all>
*/
#define BUFFER_ADDR_INFO_1_RETURN_BUFFER_MANAGER_OFFSET              0x00000004
#define BUFFER_ADDR_INFO_1_RETURN_BUFFER_MANAGER_LSB                 8
#define BUFFER_ADDR_INFO_1_RETURN_BUFFER_MANAGER_MASK                0x00000700

/* Description		BUFFER_ADDR_INFO_1_SW_BUFFER_COOKIE
			
			Cookie field exclusively used by SW. 
			
			
			
			In case of 'NULL' pointer, this field is set to 0
			
			
			
			HW ignores the contents, accept that it passes the
			programmed value on to other descriptors together with the
			physical address 
			
			
			
			Field can be used by SW to for example associate the
			buffers physical address with the virtual address
			
			The bit definitions as used by SW are within SW HLD
			specification
			
			
			
			NOTE:
			
			The two most significant bits can have a special meaning
			in case this struct is embedded in a TX_MPDU_DETAILS STRUCT,
			and field transmit_bw_restriction is set
			
			Sw_buffer_cookie[20:19] = 2'b00: 20 MHz TX only
			
			Sw_buffer_cookie[20:19] = 2'b01: 40 MHz TX only
			
			Sw_buffer_cookie[20:19] = 2'b10: 80 MHz TX only
			
			Sw_buffer_cookie[20:19] = 2'b11: 160 MHz TX only
			
			
			
			<legal all>
*/
#define BUFFER_ADDR_INFO_1_SW_BUFFER_COOKIE_OFFSET                   0x00000004
#define BUFFER_ADDR_INFO_1_SW_BUFFER_COOKIE_LSB                      11
#define BUFFER_ADDR_INFO_1_SW_BUFFER_COOKIE_MASK                     0xfffff800


#endif // _BUFFER_ADDR_INFO_H_