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Commit aba06b68 authored by Elliot Berman's avatar Elliot Berman
Browse files

haven: msgq: Update EMPTY/FULL signals 



Update handling of msgq response to send/recv to update internal state of
rx_empty/tx_full.

Change-Id: I8c744b2ed1dafc9b89576eb216a790d4f59530f5
Signed-off-by: default avatarElliot Berman <eberman@codeaurora.org>
parent 73eacbb2

drivers/virt/haven/hh_msgq.c

+5 −0
Original line number Diff line number Diff line
@@ -89,6 +89,7 @@ static int __hh_msgq_recv(struct hh_msgq_cap_table *cap_table_entry, 
	switch (hh_ret) {

	case HH_ERROR_OK:

		*recv_size = resp.recv_size;

		cap_table_entry->rx_empty = !resp.not_empty;

		ret = 0;

		break;

	case HH_ERROR_MSGQUEUE_EMPTY:
@@ -213,6 +214,10 @@ static int __hh_msgq_send(struct hh_msgq_cap_table *cap_table_entry, 
					size, buff, tx_flags, &resp);



	switch (hh_ret) {

	case HH_ERROR_OK:

		cap_table_entry->tx_full = !resp.not_full;

		ret = 0;

		break;

	case HH_ERROR_MSGQUEUE_FULL:

		cap_table_entry->tx_full = true;

		ret = -EAGAIN;

include/linux/haven/hh_errno.h

+2 −3
Original line number Diff line number Diff line
@@ -35,9 +35,8 @@ 
#define HH_ERROR_CSPACE_INSUF_RIGHTS	53

#define HH_ERROR_CSPACE_FULL		54



/* TODO: Get the correct values for the MSGQ error codes */

#define HH_ERROR_MSGQUEUE_FULL		60

#define HH_ERROR_MSGQUEUE_EMPTY		61

#define HH_ERROR_MSGQUEUE_EMPTY		60

#define HH_ERROR_MSGQUEUE_FULL		61



static inline int hh_remap_error(int hh_error)

{