Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef __CPM_H
2#define __CPM_H
3
4#include <linux/compiler.h>
5#include <linux/types.h>
6
7/* Opcodes common to CPM1 and CPM2
8*/
9#define CPM_CR_INIT_TRX ((ushort)0x0000)
10#define CPM_CR_INIT_RX ((ushort)0x0001)
11#define CPM_CR_INIT_TX ((ushort)0x0002)
12#define CPM_CR_HUNT_MODE ((ushort)0x0003)
13#define CPM_CR_STOP_TX ((ushort)0x0004)
14#define CPM_CR_GRA_STOP_TX ((ushort)0x0005)
15#define CPM_CR_RESTART_TX ((ushort)0x0006)
16#define CPM_CR_CLOSE_RX_BD ((ushort)0x0007)
17#define CPM_CR_SET_GADDR ((ushort)0x0008)
18#define CPM_CR_SET_TIMER ((ushort)0x0008)
19#define CPM_CR_STOP_IDMA ((ushort)0x000b)
20
21/* Buffer descriptors used by many of the CPM protocols. */
22typedef struct cpm_buf_desc {
23 ushort cbd_sc; /* Status and Control */
24 ushort cbd_datlen; /* Data length in buffer */
25 uint cbd_bufaddr; /* Buffer address in host memory */
26} cbd_t;
27
28/* Buffer descriptor control/status used by serial
29 */
30
31#define BD_SC_EMPTY (0x8000) /* Receive is empty */
32#define BD_SC_READY (0x8000) /* Transmit is ready */
33#define BD_SC_WRAP (0x2000) /* Last buffer descriptor */
34#define BD_SC_INTRPT (0x1000) /* Interrupt on change */
35#define BD_SC_LAST (0x0800) /* Last buffer in frame */
36#define BD_SC_TC (0x0400) /* Transmit CRC */
37#define BD_SC_CM (0x0200) /* Continous mode */
38#define BD_SC_ID (0x0100) /* Rec'd too many idles */
39#define BD_SC_P (0x0100) /* xmt preamble */
40#define BD_SC_BR (0x0020) /* Break received */
41#define BD_SC_FR (0x0010) /* Framing error */
42#define BD_SC_PR (0x0008) /* Parity error */
43#define BD_SC_NAK (0x0004) /* NAK - did not respond */
44#define BD_SC_OV (0x0002) /* Overrun */
45#define BD_SC_UN (0x0002) /* Underrun */
46#define BD_SC_CD (0x0001) /* */
47#define BD_SC_CL (0x0001) /* Collision */
48
49/* Buffer descriptor control/status used by Ethernet receive.
50 * Common to SCC and FCC.
51 */
52#define BD_ENET_RX_EMPTY (0x8000)
53#define BD_ENET_RX_WRAP (0x2000)
54#define BD_ENET_RX_INTR (0x1000)
55#define BD_ENET_RX_LAST (0x0800)
56#define BD_ENET_RX_FIRST (0x0400)
57#define BD_ENET_RX_MISS (0x0100)
58#define BD_ENET_RX_BC (0x0080) /* FCC Only */
59#define BD_ENET_RX_MC (0x0040) /* FCC Only */
60#define BD_ENET_RX_LG (0x0020)
61#define BD_ENET_RX_NO (0x0010)
62#define BD_ENET_RX_SH (0x0008)
63#define BD_ENET_RX_CR (0x0004)
64#define BD_ENET_RX_OV (0x0002)
65#define BD_ENET_RX_CL (0x0001)
66#define BD_ENET_RX_STATS (0x01ff) /* All status bits */
67
68/* Buffer descriptor control/status used by Ethernet transmit.
69 * Common to SCC and FCC.
70 */
71#define BD_ENET_TX_READY (0x8000)
72#define BD_ENET_TX_PAD (0x4000)
73#define BD_ENET_TX_WRAP (0x2000)
74#define BD_ENET_TX_INTR (0x1000)
75#define BD_ENET_TX_LAST (0x0800)
76#define BD_ENET_TX_TC (0x0400)
77#define BD_ENET_TX_DEF (0x0200)
78#define BD_ENET_TX_HB (0x0100)
79#define BD_ENET_TX_LC (0x0080)
80#define BD_ENET_TX_RL (0x0040)
81#define BD_ENET_TX_RCMASK (0x003c)
82#define BD_ENET_TX_UN (0x0002)
83#define BD_ENET_TX_CSL (0x0001)
84#define BD_ENET_TX_STATS (0x03ff) /* All status bits */
85
86/* Buffer descriptor control/status used by Transparent mode SCC.
87 */
88#define BD_SCC_TX_LAST (0x0800)
89
90/* Buffer descriptor control/status used by I2C.
91 */
92#define BD_I2C_START (0x0400)
93
94int cpm_muram_init(void);
95unsigned long cpm_muram_alloc(unsigned long size, unsigned long align);
96int cpm_muram_free(unsigned long offset);
97unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size);
98void __iomem *cpm_muram_addr(unsigned long offset);
99dma_addr_t cpm_muram_dma(void __iomem *addr);
100int cpm_command(u32 command, u8 opcode);
101
102#endif