1 /* SPDX-License-Identifier: GPL-2.0 */
3 /***************************************************************************
4 * Registers and bits for amccs5933 pci chip
5 * copyright : (C) 2002 by Frank Mori Hess
6 ***************************************************************************/
10 MBEF_REG = 0x34, // mailbux empty/full
11 INTCSR_REG = 0x38, // interrupt control and status
12 BMCSR_REG = 0x3c, // bus master control and status
15 // incoming mailbox 0-3 register offsets
16 extern inline int INCOMING_MAILBOX_REG(unsigned int mailbox)
18 return (0x10 + 4 * mailbox);
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
31 // select byte 0 to 3 of incoming mailbox
32 extern inline int INBOX_BYTE_BITS(unsigned int byte)
34 return (byte & 0x3) << 8;
37 // select incoming mailbox 0 to 3
38 extern inline int INBOX_SELECT_BITS(unsigned int mailbox)
40 return (mailbox & 0x3) << 10;
43 // select byte 0 to 3 of outgoing mailbox
44 extern inline int OUTBOX_BYTE_BITS(unsigned int byte)
49 // select outgoing mailbox 0 to 3
50 extern inline int OUTBOX_SELECT_BITS(unsigned int mailbox)
52 return (mailbox & 0x3) << 2;
57 MBOX_FLAGS_RESET_BIT = 0x08000000, // resets mailbox empty/full flags