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| From: | Cédric Le Goater |
| Subject: | Re: [PATCH v2 1/2] aspeed: introduce a new UART0 device name |
| Date: | Fri, 9 Feb 2024 09:27:23 +0100 |
| User-agent: | Mozilla Thunderbird |
Hello Jamin, On 2/7/24 21:02, Jamin Lin via wrote:
The Aspeed datasheet refers to the UART controllers as UART1 - UART13 for the ast10x0, ast2600, ast2500 and ast2400 SoCs and the Aspeed ast2700 introduces an UART0 and the UART controllers as UART0 - UART12. To keep the naming in the QEMU models in sync with the datasheet, let's introduce a new UART0 device name and do the required adjustements, etc ...
Please drop the etc...
Signed-off-by: Troy Lee <troy_lee@aspeedtech.com> Signed-off-by: Jamin Lin <jamin_lin@aspeedtech.com> --- hw/arm/aspeed.c | 13 ++++++++----- hw/arm/aspeed_ast10x0.c | 1 + hw/arm/aspeed_ast2400.c | 2 ++ hw/arm/aspeed_ast2600.c | 1 + hw/arm/aspeed_soc_common.c | 14 +++++++++----- include/hw/arm/aspeed_soc.h | 2 ++ 6 files changed, 23 insertions(+), 10 deletions(-) diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c index 09b1e823ba..06d863958b 100644 --- a/hw/arm/aspeed.c +++ b/hw/arm/aspeed.c @@ -342,7 +342,7 @@ static void connect_serial_hds_to_uarts(AspeedMachineState *bmc) int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default;aspeed_soc_uart_set_chr(s, uart_chosen, serial_hd(0));- for (int i = 1, uart = ASPEED_DEV_UART1; i < sc->uarts_num; i++, uart++) { + for (int i = 0, uart = sc->uarts_base; i < sc->uarts_num; i++, uart++) { if (uart == uart_chosen) { continue; } @@ -1094,7 +1094,7 @@ static char *aspeed_get_bmc_console(Object *obj, Error **errp) AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); int uart_chosen = bmc->uart_chosen ? bmc->uart_chosen : amc->uart_default;- return g_strdup_printf("uart%d", uart_chosen - ASPEED_DEV_UART1 + 1);+ return g_strdup_printf("uart%d", uart_chosen - ASPEED_DEV_UART0); }static void aspeed_set_bmc_console(Object *obj, const char *value, Error **errp)@@ -1103,6 +1103,8 @@ static void aspeed_set_bmc_console(Object *obj, const char *value, Error **errp) AspeedMachineClass *amc = ASPEED_MACHINE_GET_CLASS(bmc); AspeedSoCClass *sc = ASPEED_SOC_CLASS(object_class_by_name(amc->soc_name)); int val; + int start = sc->uarts_base - ASPEED_DEV_UART0; + int end = start + sc->uarts_num;
To help the reader, I would introduce these helpers at the end of
aspeed_soc.h :
static inline int aspeed_uart_index(int uart_dev)
{
return uart_dev - ASPEED_DEV_UART0;
}
static inline int aspeed_uart_first(AspeedSoCClass *sc)
{
return aspeed_uart_index(sc->uarts_base);
}
static inline int aspeed_uart_last(AspeedSoCClass *sc)
{
return aspeed_uart_first(sc) + sc->uarts_num - 1;
}
if (sscanf(value, "uart%u", &val) != 1) { error_setg(errp, "Bad value for \"uart\" property"); @@ -1110,11 +1112,12 @@ static void aspeed_set_bmc_console(Object *obj, const char *value, Error **errp) }/* The number of UART depends on the SoC */- if (val < 1 || val > sc->uarts_num) { - error_setg(errp, "\"uart\" should be in range [1 - %d]", sc->uarts_num); + if (val < start || val >= end) { + error_setg(errp, "\"uart\" should be in range [%d - %d]", + start, end - 1); return; } - bmc->uart_chosen = ASPEED_DEV_UART1 + val - 1; + bmc->uart_chosen = val + ASPEED_DEV_UART0; }static void aspeed_machine_class_props_init(ObjectClass *oc)diff --git a/hw/arm/aspeed_ast10x0.c b/hw/arm/aspeed_ast10x0.c index c3b5116a6a..2634e0f654 100644 --- a/hw/arm/aspeed_ast10x0.c +++ b/hw/arm/aspeed_ast10x0.c @@ -436,6 +436,7 @@ static void aspeed_soc_ast1030_class_init(ObjectClass *klass, void *data) sc->wdts_num = 4; sc->macs_num = 1; sc->uarts_num = 13; + sc->uarts_base = ASPEED_DEV_UART1; sc->irqmap = aspeed_soc_ast1030_irqmap; sc->memmap = aspeed_soc_ast1030_memmap; sc->num_cpus = 1; diff --git a/hw/arm/aspeed_ast2400.c b/hw/arm/aspeed_ast2400.c index 8829561bb6..95da85fee0 100644 --- a/hw/arm/aspeed_ast2400.c +++ b/hw/arm/aspeed_ast2400.c @@ -523,6 +523,7 @@ static void aspeed_soc_ast2400_class_init(ObjectClass *oc, void *data) sc->wdts_num = 2; sc->macs_num = 2; sc->uarts_num = 5; + sc->uarts_base = ASPEED_DEV_UART1; sc->irqmap = aspeed_soc_ast2400_irqmap; sc->memmap = aspeed_soc_ast2400_memmap; sc->num_cpus = 1; @@ -551,6 +552,7 @@ static void aspeed_soc_ast2500_class_init(ObjectClass *oc, void *data) sc->wdts_num = 3; sc->macs_num = 2; sc->uarts_num = 5; + sc->uarts_base = ASPEED_DEV_UART1; sc->irqmap = aspeed_soc_ast2500_irqmap; sc->memmap = aspeed_soc_ast2500_memmap; sc->num_cpus = 1; diff --git a/hw/arm/aspeed_ast2600.c b/hw/arm/aspeed_ast2600.c index 4ee32ea99d..f74561ecdc 100644 --- a/hw/arm/aspeed_ast2600.c +++ b/hw/arm/aspeed_ast2600.c @@ -666,6 +666,7 @@ static void aspeed_soc_ast2600_class_init(ObjectClass *oc, void *data) sc->wdts_num = 4; sc->macs_num = 4; sc->uarts_num = 13; + sc->uarts_base = ASPEED_DEV_UART1; sc->irqmap = aspeed_soc_ast2600_irqmap; sc->memmap = aspeed_soc_ast2600_memmap; sc->num_cpus = 2; diff --git a/hw/arm/aspeed_soc_common.c b/hw/arm/aspeed_soc_common.c index 123a0c432c..54c875c8d5 100644 --- a/hw/arm/aspeed_soc_common.c +++ b/hw/arm/aspeed_soc_common.c @@ -36,7 +36,7 @@ bool aspeed_soc_uart_realize(AspeedSoCState *s, Error **errp) AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); SerialMM *smm;- for (int i = 0, uart = ASPEED_DEV_UART1; i < sc->uarts_num; i++, uart++) {+ for (int i = 0, uart = sc->uarts_base; i < sc->uarts_num; i++, uart++) { smm = &s->uart[i];/* Chardev property is set by the machine. */@@ -58,10 +58,14 @@ bool aspeed_soc_uart_realize(AspeedSoCState *s, Error **errp) void aspeed_soc_uart_set_chr(AspeedSoCState *s, int dev, Chardev *chr) { AspeedSoCClass *sc = ASPEED_SOC_GET_CLASS(s); - int i = dev - ASPEED_DEV_UART1; - - g_assert(0 <= i && i < ARRAY_SIZE(s->uart) && i < sc->uarts_num); - qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", chr); + int uart_num = dev - ASPEED_DEV_UART0; + int start = sc->uarts_base - ASPEED_DEV_UART0; + int end = start + sc->uarts_num; + int index = uart_num - start; + + g_assert(uart_num >= start && uart_num < end);
I don't think this assert is necessary. Only the second one is. If you want to check the range and return an error, please add an Error **errp argument and have the callers pass &error_fatal. It would have the same effect. Thanks, C.
+ g_assert(index < ARRAY_SIZE(s->uart)); + qdev_prop_set_chr(DEVICE(&s->uart[index]), "chardev", chr); }/*diff --git a/include/hw/arm/aspeed_soc.h b/include/hw/arm/aspeed_soc.h index 9d0af84a8c..5ab0902da0 100644 --- a/include/hw/arm/aspeed_soc.h +++ b/include/hw/arm/aspeed_soc.h @@ -140,6 +140,7 @@ struct AspeedSoCClass { int wdts_num; int macs_num; int uarts_num; + int uarts_base; const int *irqmap; const hwaddr *memmap; uint32_t num_cpus; @@ -151,6 +152,7 @@ const char *aspeed_soc_cpu_type(AspeedSoCClass *sc); enum { ASPEED_DEV_SPI_BOOT, ASPEED_DEV_IOMEM, + ASPEED_DEV_UART0, ASPEED_DEV_UART1, ASPEED_DEV_UART2, ASPEED_DEV_UART3,
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