From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
mikey@neuling.org, hbabu@us.ibm.com, nicholas.piggin@gmail.com,
linuxppc-dev@ozlabs.org, <linux-kernel@vger.kernel.org>
Subject: [PATCH v3 07/18] powerpc/vas: Save configured window credits
Date: Tue, 7 Nov 2017 18:23:47 -0800 [thread overview]
Message-ID: <1510107838-15181-8-git-send-email-sukadev@linux.vnet.ibm.com> (raw)
In-Reply-To: <1510107838-15181-1-git-send-email-sukadev@linux.vnet.ibm.com>
Save the configured max window credits for a window in the vas_window
structure. We will need this when polling for return of window credits.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
arch/powerpc/platforms/powernv/vas-window.c | 6 ++++--
arch/powerpc/platforms/powernv/vas.h | 1 +
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/vas-window.c b/arch/powerpc/platforms/powernv/vas-window.c
index 1422cdd..a59a187 100644
--- a/arch/powerpc/platforms/powernv/vas-window.c
+++ b/arch/powerpc/platforms/powernv/vas-window.c
@@ -674,7 +674,7 @@ static void init_winctx_for_rxwin(struct vas_window *rxwin,
winctx->rx_fifo = rxattr->rx_fifo;
winctx->rx_fifo_size = rxattr->rx_fifo_size;
- winctx->wcreds_max = rxattr->wcreds_max ?: VAS_WCREDS_DEFAULT;
+ winctx->wcreds_max = rxwin->wcreds_max;
winctx->pin_win = rxattr->pin_win;
winctx->nx_win = rxattr->nx_win;
@@ -844,6 +844,7 @@ struct vas_window *vas_rx_win_open(int vasid, enum vas_cop_type cop,
rxwin->nx_win = rxattr->nx_win;
rxwin->user_win = rxattr->user_win;
rxwin->cop = cop;
+ rxwin->wcreds_max = rxattr->wcreds_max ?: VAS_WCREDS_DEFAULT;
if (rxattr->user_win)
rxwin->pid = task_pid_vnr(current);
@@ -893,7 +894,7 @@ static void init_winctx_for_txwin(struct vas_window *txwin,
*/
memset(winctx, 0, sizeof(struct vas_winctx));
- winctx->wcreds_max = txattr->wcreds_max ?: VAS_WCREDS_DEFAULT;
+ winctx->wcreds_max = txwin->wcreds_max;
winctx->user_win = txattr->user_win;
winctx->nx_win = txwin->rxwin->nx_win;
@@ -978,6 +979,7 @@ struct vas_window *vas_tx_win_open(int vasid, enum vas_cop_type cop,
txwin->nx_win = txwin->rxwin->nx_win;
txwin->pid = attr->pid;
txwin->user_win = attr->user_win;
+ txwin->wcreds_max = attr->wcreds_max ?: VAS_WCREDS_DEFAULT;
init_winctx_for_txwin(txwin, attr, &winctx);
diff --git a/arch/powerpc/platforms/powernv/vas.h b/arch/powerpc/platforms/powernv/vas.h
index 63e8e03..02d8a31 100644
--- a/arch/powerpc/platforms/powernv/vas.h
+++ b/arch/powerpc/platforms/powernv/vas.h
@@ -332,6 +332,7 @@ struct vas_window {
void *hvwc_map; /* HV window context */
void *uwc_map; /* OS/User window context */
pid_t pid; /* Linux process id of owner */
+ int wcreds_max; /* Window credits */
/* Fields applicable only to send windows */
void *paste_kaddr;
--
2.7.4
next prev parent reply other threads:[~2017-11-08 2:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-08 2:23 [PATCH v3 00/18] powerpc/vas: Add support for FTW Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 01/18] powerpc/vas: init missing fields from [rt]xattr Sukadev Bhattiprolu
2017-11-14 11:12 ` [v3,01/18] " Michael Ellerman
2017-11-08 2:23 ` [PATCH v3 02/18] powerpc/vas: Validate window credits Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 03/18] powerpc/vas: Cleanup some debug code Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 04/18] powerpc/vas: Drop poll_window_cast_out() Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 05/18] powerpc/vas: Use helper to unpin/close window Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 06/18] powerpc/vas: Reduce polling interval for busy state Sukadev Bhattiprolu
2017-11-08 2:23 ` Sukadev Bhattiprolu [this message]
2017-11-08 2:23 ` [PATCH v3 08/18] powerpc/vas: poll for return of window credits Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 09/18] powerpc/vas: Create cpu to vas id mapping Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 10/18] powerpc/vas, nx-842: Define and use chip_to_vas_id() Sukadev Bhattiprolu
2017-11-20 17:57 ` Josh Boyer
2017-11-22 11:56 ` Michael Ellerman
2017-11-08 2:23 ` [PATCH v3 11/18] powerpc/vas: Export HVWC to debugfs Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 12/18] powerpc: have copy depend on CONFIG_BOOK3S_64 Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 13/18] powerpc: Add support for setting SPRN_TIDR Sukadev Bhattiprolu
2017-11-09 11:53 ` Michael Ellerman
2017-11-08 2:23 ` [PATCH v3 14/18] powerpc: Define set_thread_uses_vas() Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 15/18] powerpc: Emulate paste instruction Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 16/18] powerpc/vas: Define vas_win_paste_addr() Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 17/18] powerpc/vas: Define vas_win_id() Sukadev Bhattiprolu
2017-11-08 2:23 ` [PATCH v3 18/18] powerpc/vas: Add support for user receive window Sukadev Bhattiprolu
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