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powerpc/hvsi: Move HVSI protocol definitions to a header file

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This moves various HVSI protocol definitions from the hvsi.c
driver to a header file that can be used later on by a udbg
implementation

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2011-06-16 15:08:12 +00:00
parent 8a0360a563
commit 725e789f22
2 changed files with 69 additions and 62 deletions
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68
arch/powerpc/include/asm/hvsi.h Normal file
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@ -0,0 +1,68 @@
#ifndef _HVSI_H
#define _HVSI_H
#define VS_DATA_PACKET_HEADER 0xff
#define VS_CONTROL_PACKET_HEADER 0xfe
#define VS_QUERY_PACKET_HEADER 0xfd
#define VS_QUERY_RESPONSE_PACKET_HEADER 0xfc
/* control verbs */
#define VSV_SET_MODEM_CTL 1 /* to service processor only */
#define VSV_MODEM_CTL_UPDATE 2 /* from service processor only */
#define VSV_CLOSE_PROTOCOL 3
/* query verbs */
#define VSV_SEND_VERSION_NUMBER 1
#define VSV_SEND_MODEM_CTL_STATUS 2
/* yes, these masks are not consecutive. */
#define HVSI_TSDTR 0x01
#define HVSI_TSCD 0x20
#define HVSI_MAX_OUTGOING_DATA 12
#define HVSI_VERSION 1
struct hvsi_header {
uint8_t type;
uint8_t len;
uint16_t seqno;
} __attribute__((packed));
struct hvsi_data {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint8_t data[HVSI_MAX_OUTGOING_DATA];
} __attribute__((packed));
struct hvsi_control {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint16_t verb;
/* optional depending on verb: */
uint32_t word;
uint32_t mask;
} __attribute__((packed));
struct hvsi_query {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint16_t verb;
} __attribute__((packed));
struct hvsi_query_response {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint16_t verb;
uint16_t query_seqno;
union {
uint8_t version;
uint32_t mctrl_word;
} u;
} __attribute__((packed));
#endif /* _HVSI_H */

63
drivers/tty/hvc/hvsi.c
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@ -49,6 +49,7 @@
#include <asm/uaccess.h>
#include <asm/vio.h>
#include <asm/param.h>
#include <asm/hvsi.h>
#define HVSI_MAJOR 229
#define HVSI_MINOR 128
@ -109,68 +110,6 @@ enum HVSI_PROTOCOL_STATE {
};
#define HVSI_CONSOLE 0x1
#define VS_DATA_PACKET_HEADER 0xff
#define VS_CONTROL_PACKET_HEADER 0xfe
#define VS_QUERY_PACKET_HEADER 0xfd
#define VS_QUERY_RESPONSE_PACKET_HEADER 0xfc
/* control verbs */
#define VSV_SET_MODEM_CTL 1 /* to service processor only */
#define VSV_MODEM_CTL_UPDATE 2 /* from service processor only */
#define VSV_CLOSE_PROTOCOL 3
/* query verbs */
#define VSV_SEND_VERSION_NUMBER 1
#define VSV_SEND_MODEM_CTL_STATUS 2
/* yes, these masks are not consecutive. */
#define HVSI_TSDTR 0x01
#define HVSI_TSCD 0x20
struct hvsi_header {
uint8_t type;
uint8_t len;
uint16_t seqno;
} __attribute__((packed));
struct hvsi_data {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint8_t data[HVSI_MAX_OUTGOING_DATA];
} __attribute__((packed));
struct hvsi_control {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint16_t verb;
/* optional depending on verb: */
uint32_t word;
uint32_t mask;
} __attribute__((packed));
struct hvsi_query {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint16_t verb;
} __attribute__((packed));
struct hvsi_query_response {
uint8_t type;
uint8_t len;
uint16_t seqno;
uint16_t verb;
uint16_t query_seqno;
union {
uint8_t version;
uint32_t mctrl_word;
} u;
} __attribute__((packed));
static inline int is_console(struct hvsi_struct *hp)
{
return hp->flags & HVSI_CONSOLE;