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