From: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
CK Hu <ck.hu@mediatek.com>,
Bibby Hsieh <bibby.hsieh@mediatek.com>,
Houlong Wei <houlong.wei@mediatek.com>
Cc: <dri-devel@lists.freedesktop.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <wsd_upstream@mediatek.com>,
HS Liao <hs.liao@mediatek.com>,
Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Subject: [PATCH v2 7/8] soc: mediatek: cmdq: add jump function
Date: Sun, 5 Jul 2020 14:48:34 +0800 [thread overview]
Message-ID: <1593931715-32761-8-git-send-email-dennis-yc.hsieh@mediatek.com> (raw)
In-Reply-To: <1593931715-32761-1-git-send-email-dennis-yc.hsieh@mediatek.com>
Add jump function so that client can jump to any address which
contains instruction.
Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
---
drivers/soc/mediatek/mtk-cmdq-helper.c | 13 +++++++++++++
include/linux/soc/mediatek/mtk-cmdq.h | 11 +++++++++++
2 files changed, 24 insertions(+)
diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index b6e25f216605..d55dc3296105 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -13,6 +13,7 @@
#define CMDQ_POLL_ENABLE_MASK BIT(0)
#define CMDQ_EOC_IRQ_EN BIT(0)
#define CMDQ_REG_TYPE 1
+#define CMDQ_JUMP_RELATIVE 1
struct cmdq_instruction {
union {
@@ -407,6 +408,18 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
}
EXPORT_SYMBOL(cmdq_pkt_assign);
+int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr)
+{
+ struct cmdq_instruction inst = {};
+
+ inst.op = CMDQ_CODE_JUMP;
+ inst.offset = CMDQ_JUMP_RELATIVE;
+ inst.value = addr >>
+ cmdq_get_shift_pa(((struct cmdq_client *)pkt->cl)->chan);
+ return cmdq_pkt_append_command(pkt, inst);
+}
+EXPORT_SYMBOL(cmdq_pkt_jump);
+
int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
{
struct cmdq_instruction inst = { {0} };
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index d9390d76ee14..34354e952f60 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -253,6 +253,17 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
/**
+ * cmdq_pkt_jump() - Append jump command to the CMDQ packet, ask GCE
+ * to execute an instruction that change current thread PC to
+ * a physical address which should contains more instruction.
+ * @pkt: the CMDQ packet
+ * @addr: physical address of target instruction buffer
+ *
+ * Return: 0 for success; else the error code is returned
+ */
+int cmdq_pkt_jump(struct cmdq_pkt *pkt, dma_addr_t addr);
+
+/**
* cmdq_pkt_finalize() - Append EOC and jump command to pkt.
* @pkt: the CMDQ packet
*
--
1.7.9.5
next prev parent reply other threads:[~2020-07-05 6:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-05 6:48 Subject: [PATCH v1 0/8] support cmdq helper function on mt6779 platform Dennis YC Hsieh
2020-07-05 6:48 ` [PATCH v2 1/8] soc: mediatek: cmdq: add address shift in jump Dennis YC Hsieh
2020-07-06 14:03 ` Matthias Brugger
2020-07-06 14:21 ` Dennis-YC Hsieh
2020-07-05 6:48 ` [PATCH v2 2/8] soc: mediatek: cmdq: add write_s function Dennis YC Hsieh
2020-07-05 6:48 ` [PATCH v2 3/8] soc: mediatek: cmdq: add write_s_mask function Dennis YC Hsieh
2020-07-05 6:48 ` [PATCH v2 4/8] soc: mediatek: cmdq: add read_s function Dennis YC Hsieh
2020-07-05 6:48 ` [PATCH v2 5/8] soc: mediatek: cmdq: add write_s value function Dennis YC Hsieh
2020-07-05 6:48 ` [PATCH v2 6/8] soc: mediatek: cmdq: add write_s_mask " Dennis YC Hsieh
2020-07-05 6:48 ` Dennis YC Hsieh [this message]
2020-07-05 6:48 ` [PATCH v2 8/8] soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api Dennis YC Hsieh
2020-07-06 23:46 ` Chun-Kuang Hu
2020-07-07 0:46 ` Dennis-YC Hsieh
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