| Message ID | 20200614025523.40183-16-sjg@chromium.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | dm: Add programmatic generation of ACPI tables (part B) | expand |
Hi Simon, On Sun, Jun 14, 2020 at 10:55 AM Simon Glass <sjg at chromium.org> wrote: > > Some devices need to inject extra code into the Differentiated System > Descriptor Table (DSDT). Add a method to handle this. > > Signed-off-by: Simon Glass <sjg at chromium.org> > Reviewed-by: Wolfgang Wallner <wolfgang.wallner at br-automation.com> > --- > > Changes in v3: > - Fix 'THe' typo > - Rename build_type() to sort_acpi_item_type() > > Changes in v1: > - Generalise the ACPI function recursion with acpi_recurse_method() > > arch/sandbox/dts/test.dts | 2 ++ > drivers/core/acpi.c | 25 +++++++++++++++++++++- > include/dm/acpi.h | 23 ++++++++++++++++++++ > test/dm/acpi.c | 44 +++++++++++++++++++++++++++++++++++++++ > 4 files changed, 93 insertions(+), 1 deletion(-) > > diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts > index 993082763d..caf935cfdf 100644 > --- a/arch/sandbox/dts/test.dts > +++ b/arch/sandbox/dts/test.dts > @@ -257,6 +257,7 @@ > acpi_test1: acpi-test { > compatible = "denx,u-boot-acpi-test"; > acpi-ssdt-test-data = "ab"; > + acpi-dsdt-test-data = "hi"; > child { > compatible = "denx,u-boot-acpi-test"; > }; > @@ -265,6 +266,7 @@ > acpi_test2: acpi-test2 { > compatible = "denx,u-boot-acpi-test"; > acpi-ssdt-test-data = "cd"; > + acpi-dsdt-test-data = "jk"; > }; > > clocks { > diff --git a/drivers/core/acpi.c b/drivers/core/acpi.c > index 4719a5c4e4..c1fc364550 100644 > --- a/drivers/core/acpi.c > +++ b/drivers/core/acpi.c > @@ -22,12 +22,14 @@ > enum gen_type_t { > TYPE_NONE, > TYPE_SSDT, > + TYPE_DSDT, > }; > > /* Type of method to call */ > enum method_t { > METHOD_WRITE_TABLES, > METHOD_FILL_SSDT, > + METHOD_INJECT_DSDT, > }; > > /* Prototype for all methods */ > @@ -144,7 +146,9 @@ static int sort_acpi_item_type(struct acpi_ctx *ctx, void *start, > void *end = ctx->current; > > ptr = start; > - order = ofnode_read_chosen_prop("u-boot,acpi-ssdt-order", &size); > + order = ofnode_read_chosen_prop(type == TYPE_DSDT ? > + "u-boot,acpi-dsdt-order" : > + "u-boot,acpi-ssdt-order", &size); > if (!order) { > log_warning("Failed to find ordering, leaving as is\n"); > return 0; > @@ -189,6 +193,8 @@ acpi_method acpi_get_method(struct udevice *dev, enum method_t method) > return aops->write_tables; > case METHOD_FILL_SSDT: > return aops->fill_ssdt; > + case METHOD_INJECT_DSDT: > + return aops->inject_dsdt; > } > } > > @@ -247,6 +253,23 @@ int acpi_fill_ssdt(struct acpi_ctx *ctx) > return ret; > } > > +int acpi_inject_dsdt(struct acpi_ctx *ctx) For naming consistency, this should be acpi_fill_dsdt(), or change the ssdt one to: acpi_inject_ssdt() otherwise. > +{ > + void *start = ctx->current; > + int ret; > + > + log_debug("Writing DSDT tables\n"); > + item_count = 0; > + ret = acpi_recurse_method(ctx, dm_root(), METHOD_INJECT_DSDT, > + TYPE_DSDT); > + log_debug("Writing DSDT finished, err=%d\n", ret); > + ret = sort_acpi_item_type(ctx, start, TYPE_DSDT); > + if (ret) > + return log_msg_ret("build", ret); > + > + return ret; > +} > + > int acpi_write_dev_tables(struct acpi_ctx *ctx) > { > int ret; > diff --git a/include/dm/acpi.h b/include/dm/acpi.h > index eda23f97a6..18bce2baf6 100644 > --- a/include/dm/acpi.h > +++ b/include/dm/acpi.h > @@ -87,6 +87,19 @@ struct acpi_ops { > * @return 0 if OK, -ve on error > */ > int (*fill_ssdt)(const struct udevice *dev, struct acpi_ctx *ctx); > + > + /** > + * inject_dsdt() - Generate DSDT code for a device > + * > + * This is called to create the DSDT code. The method should write out > + * whatever ACPI code is needed by this device. It will end up in the > + * DSDT table. > + * > + * @dev: Device to write > + * @ctx: ACPI context to use > + * @return 0 if OK, -ve on error > + */ > + int (*inject_dsdt)(const struct udevice *dev, struct acpi_ctx *ctx); > }; > > #define device_get_acpi_ops(dev) ((dev)->driver->acpi_ops) > @@ -141,6 +154,16 @@ int acpi_write_dev_tables(struct acpi_ctx *ctx); > */ > int acpi_fill_ssdt(struct acpi_ctx *ctx); > > +/** > + * acpi_inject_dsdt() - Generate ACPI tables for DSDT > + * > + * This is called to create the DSDT code for all devices. > + * > + * @ctx: ACPI context to use > + * @return 0 if OK, -ve on error > + */ > +int acpi_inject_dsdt(struct acpi_ctx *ctx); > + > #endif /* __ACPI__ */ > > #endif > diff --git a/test/dm/acpi.c b/test/dm/acpi.c > index 4e1d401e0d..1abde65c8c 100644 > --- a/test/dm/acpi.c > +++ b/test/dm/acpi.c > @@ -81,10 +81,24 @@ static int testacpi_fill_ssdt(const struct udevice *dev, struct acpi_ctx *ctx) > return 0; > } > > +static int testacpi_inject_dsdt(const struct udevice *dev, struct acpi_ctx *ctx) > +{ > + const char *data; > + > + data = dev_read_string(dev, "acpi-dsdt-test-data"); > + if (data) { > + while (*data) > + acpigen_emit_byte(ctx, *data++); > + } > + > + return 0; > +} > + > struct acpi_ops testacpi_ops = { > .get_name = testacpi_get_name, > .write_tables = testacpi_write_tables, > .fill_ssdt = testacpi_fill_ssdt, > + .inject_dsdt = testacpi_inject_dsdt, > }; > > static const struct udevice_id testacpi_ids[] = { > @@ -441,3 +455,33 @@ static int dm_test_acpi_fill_ssdt(struct unit_test_state *uts) > return 0; > } > DM_TEST(dm_test_acpi_fill_ssdt, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); > + > +/* Test acpi_inject_dsdt() */ > +static int dm_test_acpi_inject_dsdt(struct unit_test_state *uts) > +{ > + struct acpi_ctx ctx; > + u8 *buf; > + > + buf = malloc(BUF_SIZE); > + ut_assertnonnull(buf); > + > + ctx.current = buf; > + buf[4] = 'z'; /* sentinel */ > + ut_assertok(acpi_inject_dsdt(&ctx)); > + > + /* > + * These values come from acpi-test's acpi-dsdt-test-data property. > + * There is no u-boot,acpi-dsdt-order so device-tree order is used. > + */ > + ut_asserteq('h', buf[0]); > + ut_asserteq('i', buf[1]); > + > + /* These values come from acpi-test's acpi-dsdt-test-data property */ > + ut_asserteq('j', buf[2]); > + ut_asserteq('k', buf[3]); > + > + ut_asserteq('z', buf[4]); > + > + return 0; > +} > +DM_TEST(dm_test_acpi_inject_dsdt, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); > -- Regards, Bin
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 993082763d..caf935cfdf 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -257,6 +257,7 @@ acpi_test1: acpi-test { compatible = "denx,u-boot-acpi-test"; acpi-ssdt-test-data = "ab"; + acpi-dsdt-test-data = "hi"; child { compatible = "denx,u-boot-acpi-test"; }; @@ -265,6 +266,7 @@ acpi_test2: acpi-test2 { compatible = "denx,u-boot-acpi-test"; acpi-ssdt-test-data = "cd"; + acpi-dsdt-test-data = "jk"; }; clocks { diff --git a/drivers/core/acpi.c b/drivers/core/acpi.c index 4719a5c4e4..c1fc364550 100644 --- a/drivers/core/acpi.c +++ b/drivers/core/acpi.c @@ -22,12 +22,14 @@ enum gen_type_t { TYPE_NONE, TYPE_SSDT, + TYPE_DSDT, }; /* Type of method to call */ enum method_t { METHOD_WRITE_TABLES, METHOD_FILL_SSDT, + METHOD_INJECT_DSDT, }; /* Prototype for all methods */ @@ -144,7 +146,9 @@ static int sort_acpi_item_type(struct acpi_ctx *ctx, void *start, void *end = ctx->current; ptr = start; - order = ofnode_read_chosen_prop("u-boot,acpi-ssdt-order", &size); + order = ofnode_read_chosen_prop(type == TYPE_DSDT ? + "u-boot,acpi-dsdt-order" : + "u-boot,acpi-ssdt-order", &size); if (!order) { log_warning("Failed to find ordering, leaving as is\n"); return 0; @@ -189,6 +193,8 @@ acpi_method acpi_get_method(struct udevice *dev, enum method_t method) return aops->write_tables; case METHOD_FILL_SSDT: return aops->fill_ssdt; + case METHOD_INJECT_DSDT: + return aops->inject_dsdt; } } @@ -247,6 +253,23 @@ int acpi_fill_ssdt(struct acpi_ctx *ctx) return ret; } +int acpi_inject_dsdt(struct acpi_ctx *ctx) +{ + void *start = ctx->current; + int ret; + + log_debug("Writing DSDT tables\n"); + item_count = 0; + ret = acpi_recurse_method(ctx, dm_root(), METHOD_INJECT_DSDT, + TYPE_DSDT); + log_debug("Writing DSDT finished, err=%d\n", ret); + ret = sort_acpi_item_type(ctx, start, TYPE_DSDT); + if (ret) + return log_msg_ret("build", ret); + + return ret; +} + int acpi_write_dev_tables(struct acpi_ctx *ctx) { int ret; diff --git a/include/dm/acpi.h b/include/dm/acpi.h index eda23f97a6..18bce2baf6 100644 --- a/include/dm/acpi.h +++ b/include/dm/acpi.h @@ -87,6 +87,19 @@ struct acpi_ops { * @return 0 if OK, -ve on error */ int (*fill_ssdt)(const struct udevice *dev, struct acpi_ctx *ctx); + + /** + * inject_dsdt() - Generate DSDT code for a device + * + * This is called to create the DSDT code. The method should write out + * whatever ACPI code is needed by this device. It will end up in the + * DSDT table. + * + * @dev: Device to write + * @ctx: ACPI context to use + * @return 0 if OK, -ve on error + */ + int (*inject_dsdt)(const struct udevice *dev, struct acpi_ctx *ctx); }; #define device_get_acpi_ops(dev) ((dev)->driver->acpi_ops) @@ -141,6 +154,16 @@ int acpi_write_dev_tables(struct acpi_ctx *ctx); */ int acpi_fill_ssdt(struct acpi_ctx *ctx); +/** + * acpi_inject_dsdt() - Generate ACPI tables for DSDT + * + * This is called to create the DSDT code for all devices. + * + * @ctx: ACPI context to use + * @return 0 if OK, -ve on error + */ +int acpi_inject_dsdt(struct acpi_ctx *ctx); + #endif /* __ACPI__ */ #endif diff --git a/test/dm/acpi.c b/test/dm/acpi.c index 4e1d401e0d..1abde65c8c 100644 --- a/test/dm/acpi.c +++ b/test/dm/acpi.c @@ -81,10 +81,24 @@ static int testacpi_fill_ssdt(const struct udevice *dev, struct acpi_ctx *ctx) return 0; } +static int testacpi_inject_dsdt(const struct udevice *dev, struct acpi_ctx *ctx) +{ + const char *data; + + data = dev_read_string(dev, "acpi-dsdt-test-data"); + if (data) { + while (*data) + acpigen_emit_byte(ctx, *data++); + } + + return 0; +} + struct acpi_ops testacpi_ops = { .get_name = testacpi_get_name, .write_tables = testacpi_write_tables, .fill_ssdt = testacpi_fill_ssdt, + .inject_dsdt = testacpi_inject_dsdt, }; static const struct udevice_id testacpi_ids[] = { @@ -441,3 +455,33 @@ static int dm_test_acpi_fill_ssdt(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_acpi_fill_ssdt, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* Test acpi_inject_dsdt() */ +static int dm_test_acpi_inject_dsdt(struct unit_test_state *uts) +{ + struct acpi_ctx ctx; + u8 *buf; + + buf = malloc(BUF_SIZE); + ut_assertnonnull(buf); + + ctx.current = buf; + buf[4] = 'z'; /* sentinel */ + ut_assertok(acpi_inject_dsdt(&ctx)); + + /* + * These values come from acpi-test's acpi-dsdt-test-data property. + * There is no u-boot,acpi-dsdt-order so device-tree order is used. + */ + ut_asserteq('h', buf[0]); + ut_asserteq('i', buf[1]); + + /* These values come from acpi-test's acpi-dsdt-test-data property */ + ut_asserteq('j', buf[2]); + ut_asserteq('k', buf[3]); + + ut_asserteq('z', buf[4]); + + return 0; +} +DM_TEST(dm_test_acpi_inject_dsdt, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);