[PATCH v4 12/13] memory: mtk-smi: mt8195: Add initial setting for smi-larb
Yong Wu
yong.wu at mediatek.com
Tue Sep 14 04:37:02 PDT 2021
To improve the performance, We add some initial setting for smi larbs.
there are two part:
1), Each port has the special ostd(outstanding) value in each larb.
2), Two general settings for each larb.
a. THRT_UPDATE: the value in bits[7:4] of 0x24 is not so good.
The HW default is 4, and we expect it is 5, thus, add a flag to update
it. This is only a DE recommendatory value, not a actual issue.
The register name(THRT_CON) means: throttling control, and the field
RD_NU_LMT means: Read Non-ultra commands limit.
This change means update the Read non-ultra command from 4 to 5 here.
b. SW_FLAG: Set 1 to the FLAG register. this is only for helping
debug. We could confirm if the larb is reset from this value is 1 or 0.
In some SoC, this setting maybe changed dynamically for some special case
like 4K, and this initial setting is enough in mt8195.
Signed-off-by: Yong Wu <yong.wu at mediatek.com>
---
drivers/memory/mtk-smi.c | 79 +++++++++++++++++++++++++++++++++++++++-
1 file changed, 78 insertions(+), 1 deletion(-)
diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
index 689a45b39a65..b883dcc0bbfa 100644
--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -32,6 +32,15 @@
#define SMI_DUMMY 0x444
/* SMI LARB */
+#define SMI_LARB_CMD_THRT_CON 0x24
+#define SMI_LARB_THRT_RD_NU_LMT_MSK GENMASK(7, 4)
+#define SMI_LARB_THRT_RD_NU_LMT (5 << 4)
+
+#define SMI_LARB_SW_FLAG 0x40
+#define SMI_LARB_SW_FLAG_1 0x1
+
+#define SMI_LARB_OSTDL_PORT 0x200
+#define SMI_LARB_OSTDL_PORTx(id) (SMI_LARB_OSTDL_PORT + (((id) & 0x1f) << 2))
/* Below are about mmu enable registers, they are different in SoCs */
/* gen1: mt2701 */
@@ -68,6 +77,11 @@
})
#define SMI_COMMON_INIT_REGS_NR 6
+#define SMI_LARB_PORT_NR_MAX 32
+
+#define MTK_SMI_FLAG_THRT_UPDATE BIT(0)
+#define MTK_SMI_FLAG_SW_FLAG BIT(1)
+#define MTK_SMI_CAPS(flags, _x) (!!((flags) & (_x)))
struct mtk_smi_reg_pair {
unsigned int offset;
@@ -108,6 +122,8 @@ struct mtk_smi_larb_gen {
int port_in_larb[MTK_LARB_NR_MAX + 1];
void (*config_port)(struct device *dev);
unsigned int larb_direct_to_common_mask;
+ unsigned int flags_general;
+ const u8 (*ostd)[SMI_LARB_PORT_NR_MAX];
};
struct mtk_smi {
@@ -224,12 +240,26 @@ static void mtk_smi_larb_config_port_mt8173(struct device *dev)
static void mtk_smi_larb_config_port_gen2_general(struct device *dev)
{
struct mtk_smi_larb *larb = dev_get_drvdata(dev);
- u32 reg;
+ u32 reg, flags_general = larb->larb_gen->flags_general;
+ const u8 *larbostd = larb->larb_gen->ostd[larb->larbid];
int i;
if (BIT(larb->larbid) & larb->larb_gen->larb_direct_to_common_mask)
return;
+ if (MTK_SMI_CAPS(flags_general, MTK_SMI_FLAG_THRT_UPDATE)) {
+ reg = readl_relaxed(larb->base + SMI_LARB_CMD_THRT_CON);
+ reg &= ~SMI_LARB_THRT_RD_NU_LMT_MSK;
+ reg |= SMI_LARB_THRT_RD_NU_LMT;
+ writel_relaxed(reg, larb->base + SMI_LARB_CMD_THRT_CON);
+ }
+
+ if (MTK_SMI_CAPS(flags_general, MTK_SMI_FLAG_SW_FLAG))
+ writel_relaxed(SMI_LARB_SW_FLAG_1, larb->base + SMI_LARB_SW_FLAG);
+
+ for (i = 0; i < SMI_LARB_PORT_NR_MAX && larbostd && !!larbostd[i]; i++)
+ writel_relaxed(larbostd[i], larb->base + SMI_LARB_OSTDL_PORTx(i));
+
for_each_set_bit(i, (unsigned long *)larb->mmu, 32) {
reg = readl_relaxed(larb->base + SMI_LARB_NONSEC_CON(i));
reg |= F_MMU_EN;
@@ -238,6 +268,51 @@ static void mtk_smi_larb_config_port_gen2_general(struct device *dev)
}
}
+static const u8 mtk_smi_larb_mt8195_ostd[][SMI_LARB_PORT_NR_MAX] = {
+ [0] = {0x0a, 0xc, 0x22, 0x22, 0x01, 0x0a,}, /* larb0 */
+ [1] = {0x0a, 0xc, 0x22, 0x22, 0x01, 0x0a,}, /* larb1 */
+ [2] = {0x12, 0x12, 0x12, 0x12, 0x0a,}, /* ... */
+ [3] = {0x12, 0x12, 0x12, 0x12, 0x28, 0x28, 0x0a,},
+ [4] = {0x06, 0x01, 0x17, 0x06, 0x0a,},
+ [5] = {0x06, 0x01, 0x17, 0x06, 0x06, 0x01, 0x06, 0x0a,},
+ [6] = {0x06, 0x01, 0x06, 0x0a,},
+ [7] = {0x0c, 0x0c, 0x12,},
+ [8] = {0x0c, 0x0c, 0x12,},
+ [9] = {0x0a, 0x08, 0x04, 0x06, 0x01, 0x01, 0x10, 0x18, 0x11, 0x0a,
+ 0x08, 0x04, 0x11, 0x06, 0x02, 0x06, 0x01, 0x11, 0x11, 0x06,},
+ [10] = {0x18, 0x08, 0x01, 0x01, 0x20, 0x12, 0x18, 0x06, 0x05, 0x10,
+ 0x08, 0x08, 0x10, 0x08, 0x08, 0x18, 0x0c, 0x09, 0x0b, 0x0d,
+ 0x0d, 0x06, 0x10, 0x10,},
+ [11] = {0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x0e, 0x01, 0x01, 0x01, 0x01,},
+ [12] = {0x09, 0x09, 0x05, 0x05, 0x0c, 0x18, 0x02, 0x02, 0x04, 0x02,},
+ [13] = {0x02, 0x02, 0x12, 0x12, 0x02, 0x02, 0x02, 0x02, 0x08, 0x01,},
+ [14] = {0x12, 0x12, 0x02, 0x02, 0x02, 0x02, 0x16, 0x01, 0x16, 0x01,
+ 0x01, 0x02, 0x02, 0x08, 0x02,},
+ [15] = {},
+ [16] = {0x28, 0x02, 0x02, 0x12, 0x02, 0x12, 0x10, 0x02, 0x02, 0x0a,
+ 0x12, 0x02, 0x0a, 0x16, 0x02, 0x04,},
+ [17] = {0x1a, 0x0e, 0x0a, 0x0a, 0x0c, 0x0e, 0x10,},
+ [18] = {0x12, 0x06, 0x12, 0x06,},
+ [19] = {0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x04, 0x01,
+ 0x01, 0x01, 0x04, 0x0a, 0x06, 0x01, 0x01, 0x01, 0x0a, 0x06,
+ 0x01, 0x01, 0x05, 0x03, 0x03, 0x04, 0x01,},
+ [20] = {0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x04, 0x01,
+ 0x01, 0x01, 0x04, 0x0a, 0x06, 0x01, 0x01, 0x01, 0x0a, 0x06,
+ 0x01, 0x01, 0x05, 0x03, 0x03, 0x04, 0x01,},
+ [21] = {0x28, 0x19, 0x0c, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04,},
+ [22] = {0x28, 0x19, 0x0c, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04,},
+ [23] = {0x18, 0x01,},
+ [24] = {0x01, 0x01, 0x04, 0x01, 0x01, 0x01, 0x01, 0x01, 0x04, 0x01,
+ 0x01, 0x01,},
+ [25] = {0x02, 0x02, 0x02, 0x28, 0x16, 0x02, 0x02, 0x02, 0x12, 0x16,
+ 0x02, 0x01,},
+ [26] = {0x02, 0x02, 0x02, 0x28, 0x16, 0x02, 0x02, 0x02, 0x12, 0x16,
+ 0x02, 0x01,},
+ [27] = {0x02, 0x02, 0x02, 0x28, 0x16, 0x02, 0x02, 0x02, 0x12, 0x16,
+ 0x02, 0x01,},
+ [28] = {0x1a, 0x0e, 0x0a, 0x0a, 0x0c, 0x0e, 0x10,},
+};
+
static const struct mtk_smi_larb_gen mtk_smi_larb_mt2701 = {
.port_in_larb = {
LARB0_PORT_OFFSET, LARB1_PORT_OFFSET,
@@ -280,6 +355,8 @@ static const struct mtk_smi_larb_gen mtk_smi_larb_mt8192 = {
static const struct mtk_smi_larb_gen mtk_smi_larb_mt8195 = {
.config_port = mtk_smi_larb_config_port_gen2_general,
+ .flags_general = MTK_SMI_FLAG_THRT_UPDATE | MTK_SMI_FLAG_SW_FLAG,
+ .ostd = mtk_smi_larb_mt8195_ostd,
};
static const struct of_device_id mtk_smi_larb_of_ids[] = {
--
2.18.0
More information about the linux-arm-kernel
mailing list