| Message ID | 20240808024916.1262715-4-jamin_lin@aspeedtech.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | support I2C for AST2700 | expand |
On 8/8/24 04:49, Jamin Lin wrote: > It only support continuous pool buffer memory region for all I2C bus. > However, the pool buffer address of all I2c bus are discontinuous > for AST2700. > > Ex: the pool buffer address of I2C bus for ast2700 as following. > 0x1A0 - 0x1BF: Device 0 buffer > 0x2A0 - 0x2BF: Device 1 buffer > 0x3A0 - 0x3BF: Device 2 buffer > 0x4A0 - 0x4BF: Device 3 buffer > 0x5A0 - 0x5BF: Device 4 buffer > 0x6A0 - 0x6BF: Device 5 buffer > 0x7A0 - 0x7BF: Device 6 buffer > 0x8A0 - 0x8BF: Device 7 buffer > 0x9A0 - 0x9BF: Device 8 buffer > 0xAA0 - 0xABF: Device 9 buffer > 0xBA0 - 0xBBF: Device 10 buffer > 0xCA0 - 0xCBF: Device 11 buffer > 0xDA0 - 0xDBF: Device 12 buffer > 0xEA0 - 0xEBF: Device 13 buffer > 0xFA0 – 0xFBF: Device 14 buffer > 0x10A0 – 0x10BF: Device 15 buffer > > Introduce a new class attribute to make user set each I2C bus > pool buffer gap size. Update formula to create all I2C bus > pool buffer memory regions. > > Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com> Reviewed-by: Cédric Le Goater <clg@redhat.com> Thanks, C. > --- > hw/i2c/aspeed_i2c.c | 3 ++- > include/hw/i2c/aspeed_i2c.h | 1 + > 2 files changed, 3 insertions(+), 1 deletion(-) > > diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c > index d3d49340ea..abcb1d5330 100644 > --- a/hw/i2c/aspeed_i2c.c > +++ b/hw/i2c/aspeed_i2c.c > @@ -1098,6 +1098,7 @@ static void aspeed_i2c_realize(DeviceState *dev, Error **errp) > AspeedI2CState *s = ASPEED_I2C(dev); > AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(s); > uint32_t reg_offset = aic->reg_size + aic->reg_gap_size; > + uint32_t pool_offset = aic->pool_size + aic->pool_gap_size; > > sysbus_init_irq(sbd, &s->irq); > memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_i2c_ctrl_ops, s, > @@ -1133,7 +1134,7 @@ static void aspeed_i2c_realize(DeviceState *dev, Error **errp) > } else { > for (i = 0; i < aic->num_busses; i++) { > memory_region_add_subregion(&s->iomem, > - aic->pool_base + (aic->pool_size * i), > + aic->pool_base + (pool_offset * i), > &s->busses[i].mr_pool); > } > } > diff --git a/include/hw/i2c/aspeed_i2c.h b/include/hw/i2c/aspeed_i2c.h > index 8e62ec64f8..b42c4dc584 100644 > --- a/include/hw/i2c/aspeed_i2c.h > +++ b/include/hw/i2c/aspeed_i2c.h > @@ -284,6 +284,7 @@ struct AspeedI2CClass { > > uint64_t pool_size; > hwaddr pool_base; > + uint32_t pool_gap_size; > uint8_t *(*bus_pool_base)(AspeedI2CBus *); > bool check_sram; > bool has_dma;
diff --git a/hw/i2c/aspeed_i2c.c b/hw/i2c/aspeed_i2c.c index d3d49340ea..abcb1d5330 100644 --- a/hw/i2c/aspeed_i2c.c +++ b/hw/i2c/aspeed_i2c.c @@ -1098,6 +1098,7 @@ static void aspeed_i2c_realize(DeviceState *dev, Error **errp) AspeedI2CState *s = ASPEED_I2C(dev); AspeedI2CClass *aic = ASPEED_I2C_GET_CLASS(s); uint32_t reg_offset = aic->reg_size + aic->reg_gap_size; + uint32_t pool_offset = aic->pool_size + aic->pool_gap_size; sysbus_init_irq(sbd, &s->irq); memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_i2c_ctrl_ops, s, @@ -1133,7 +1134,7 @@ static void aspeed_i2c_realize(DeviceState *dev, Error **errp) } else { for (i = 0; i < aic->num_busses; i++) { memory_region_add_subregion(&s->iomem, - aic->pool_base + (aic->pool_size * i), + aic->pool_base + (pool_offset * i), &s->busses[i].mr_pool); } } diff --git a/include/hw/i2c/aspeed_i2c.h b/include/hw/i2c/aspeed_i2c.h index 8e62ec64f8..b42c4dc584 100644 --- a/include/hw/i2c/aspeed_i2c.h +++ b/include/hw/i2c/aspeed_i2c.h @@ -284,6 +284,7 @@ struct AspeedI2CClass { uint64_t pool_size; hwaddr pool_base; + uint32_t pool_gap_size; uint8_t *(*bus_pool_base)(AspeedI2CBus *); bool check_sram; bool has_dma;
It only support continuous pool buffer memory region for all I2C bus. However, the pool buffer address of all I2c bus are discontinuous for AST2700. Ex: the pool buffer address of I2C bus for ast2700 as following. 0x1A0 - 0x1BF: Device 0 buffer 0x2A0 - 0x2BF: Device 1 buffer 0x3A0 - 0x3BF: Device 2 buffer 0x4A0 - 0x4BF: Device 3 buffer 0x5A0 - 0x5BF: Device 4 buffer 0x6A0 - 0x6BF: Device 5 buffer 0x7A0 - 0x7BF: Device 6 buffer 0x8A0 - 0x8BF: Device 7 buffer 0x9A0 - 0x9BF: Device 8 buffer 0xAA0 - 0xABF: Device 9 buffer 0xBA0 - 0xBBF: Device 10 buffer 0xCA0 - 0xCBF: Device 11 buffer 0xDA0 - 0xDBF: Device 12 buffer 0xEA0 - 0xEBF: Device 13 buffer 0xFA0 – 0xFBF: Device 14 buffer 0x10A0 – 0x10BF: Device 15 buffer Introduce a new class attribute to make user set each I2C bus pool buffer gap size. Update formula to create all I2C bus pool buffer memory regions. Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com> --- hw/i2c/aspeed_i2c.c | 3 ++- include/hw/i2c/aspeed_i2c.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-)