1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 /***************************************************************************
4 * Header for amcc5920 pci chip
5 *
6 * copyright : (C) 2002 by Frank Mori Hess
7 ***************************************************************************/
8
9 // plx pci chip registers and bits
10 enum amcc_registers {
11 AMCC_INTCS_REG = 0x38,
12 AMCC_PASS_THRU_REG = 0x60,
13 };
14
15 enum amcc_incsr_bits {
16 AMCC_ADDON_INTR_ENABLE_BIT = 0x2000,
17 AMCC_ADDON_INTR_ACTIVE_BIT = 0x400000,
18 AMCC_INTR_ACTIVE_BIT = 0x800000,
19 };
20
21 static const int bits_per_region = 8;
22
amcc_wait_state_bits(unsigned int region,unsigned int num_wait_states)23 static inline uint32_t amcc_wait_state_bits(unsigned int region, unsigned int num_wait_states)
24 {
25 return (num_wait_states & 0x7) << (--region * bits_per_region);
26 };
27
28 enum amcc_prefetch_bits {
29 PREFETCH_DISABLED = 0x0,
30 PREFETCH_SMALL = 0x8,
31 PREFETCH_MEDIUM = 0x10,
32 PREFETCH_LARGE = 0x18,
33 };
34
amcc_prefetch_bits(unsigned int region,enum amcc_prefetch_bits prefetch)35 static inline uint32_t amcc_prefetch_bits(unsigned int region, enum amcc_prefetch_bits prefetch)
36 {
37 return prefetch << (--region * bits_per_region);
38 };
39
amcc_PTADR_mode_bit(unsigned int region)40 static inline uint32_t amcc_PTADR_mode_bit(unsigned int region)
41 {
42 return 0x80 << (--region * bits_per_region);
43 };
44
amcc_disable_write_fifo_bit(unsigned int region)45 static inline uint32_t amcc_disable_write_fifo_bit(unsigned int region)
46 {
47 return 0x20 << (--region * bits_per_region);
48 };
49
50