mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-02 01:08:26 -04:00
Code Issues Packages Projects Releases Wiki Activity

mailbox: mtk-cmdq: Add cmdq private data to cmdq_pkt for generating instruction

Browse Source 
Add the cmdq_mbox_priv structure to store the private data of GCE,
such as the shift bits of the physical address. Then, include the
cmdq_mbox_priv structure within the cmdq_pkt structure.

This allows CMDQ users to utilize the private data in cmdq_pkt to
generate GCE instructions when needed. Additionally, having
cmdq_mbox_priv makes it easier to expand and reference other GCE
private data in the future.

Add cmdq_get_mbox_priv() for CMDQ users to get all the private data
into the cmdq_mbox_priv of the cmdq_pkt.

Signed-off-by: Jason-JH Lin <jason-jh.lin@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
This commit is contained in:
Jason-JH Lin
2025-10-31 23:56:30 +08:00
committed by Jassi Brar
parent c2b69f71ff
commit 7d834d5ce5
2 changed files with 26 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/mailbox/mtk-cmdq-mailbox.c
View File

@@ -104,6 +104,14 @@ static inline dma_addr_t cmdq_revert_gce_addr(u32 addr, const struct gce_plat *p
return (dma_addr_t)addr << pdata->shift;
}
void cmdq_get_mbox_priv(struct mbox_chan *chan, struct cmdq_mbox_priv *priv)
{
struct cmdq *cmdq = container_of(chan->mbox, struct cmdq, mbox);
priv->shift_pa = cmdq->pdata->shift;
}
EXPORT_SYMBOL(cmdq_get_mbox_priv);
u8 cmdq_get_shift_pa(struct mbox_chan *chan)
{
struct cmdq *cmdq = container_of(chan->mbox, struct cmdq, mbox);

18
include/linux/mailbox/mtk-cmdq-mailbox.h
View File

@@ -70,13 +70,31 @@ struct cmdq_cb_data {
struct cmdq_pkt *pkt;
};
struct cmdq_mbox_priv {
u8 shift_pa;
};
struct cmdq_pkt {
void *va_base;
dma_addr_t pa_base;
size_t cmd_buf_size; /* command occupied size */
size_t buf_size; /* real buffer size */
struct cmdq_mbox_priv priv; /* for generating instruction */
};
/**
* cmdq_get_mbox_priv() - get the private data of mailbox channel
* @chan: mailbox channel
* @priv: pointer to store the private data of mailbox channel
*
* While generating the GCE instruction to command buffer, the private data
* of GCE hardware may need to be referenced, such as the shift bits of
* physical address.
*
* This function should be called before generating the GCE instruction.
*/
void cmdq_get_mbox_priv(struct mbox_chan *chan, struct cmdq_mbox_priv *priv);
/**
* cmdq_get_shift_pa() - get the shift bits of physical address
* @chan: mailbox channel