Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/* SPDX-License-Identifier: GPL-2.0 */ 2 3/*************************************************************************** 4 * Registers and bits for amccs5933 pci chip 5 * copyright : (C) 2002 by Frank Mori Hess 6 ***************************************************************************/ 7 8// register offsets 9enum { 10 MBEF_REG = 0x34, // mailbux empty/full 11 INTCSR_REG = 0x38, // interrupt control and status 12 BMCSR_REG = 0x3c, // bus master control and status 13}; 14 15// incoming mailbox 0-3 register offsets 16extern inline int INCOMING_MAILBOX_REG(unsigned int mailbox) 17{ 18 return (0x10 + 4 * mailbox); 19}; 20 21// bit definitions 22 23// INTCSR bits 24enum { 25 OUTBOX_EMPTY_INTR_BIT = 0x10, // enable outbox empty interrupt 26 INBOX_FULL_INTR_BIT = 0x1000, // enable inbox full interrupt 27 INBOX_INTR_CS_BIT = 0x20000, // read, or write clear inbox full interrupt 28 INTR_ASSERTED_BIT = 0x800000, // read only, interrupt asserted 29}; 30 31// select byte 0 to 3 of incoming mailbox 32extern inline int INBOX_BYTE_BITS(unsigned int byte) 33{ 34 return (byte & 0x3) << 8; 35}; 36 37// select incoming mailbox 0 to 3 38extern inline int INBOX_SELECT_BITS(unsigned int mailbox) 39{ 40 return (mailbox & 0x3) << 10; 41}; 42 43// select byte 0 to 3 of outgoing mailbox 44extern inline int OUTBOX_BYTE_BITS(unsigned int byte) 45{ 46 return (byte & 0x3); 47}; 48 49// select outgoing mailbox 0 to 3 50extern inline int OUTBOX_SELECT_BITS(unsigned int mailbox) 51{ 52 return (mailbox & 0x3) << 2; 53}; 54 55// BMCSR bits 56enum { 57 MBOX_FLAGS_RESET_BIT = 0x08000000, // resets mailbox empty/full flags 58}; 59