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x86: tangier: Populate CSRT for shared DMA controller 

Intel Tangier has a shared DMA controller that, according to Microsoft spec,
has to be presented in CSRT table.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Andy Shevchenko 2019-07-14 19:23:59 +03:00 committed by Bin Meng
parent e3be52ceac
commit 5e99fde34a
1 changed files with 38 additions and 0 deletions
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38
arch/x86/cpu/tangier/acpi.c
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@ -68,6 +68,44 @@ u32 acpi_fill_mcfg(u32 current)
return current;
}
static u32 acpi_fill_csrt_dma(struct acpi_csrt_group *grp)
{
struct acpi_csrt_shared_info *si = (struct acpi_csrt_shared_info *)&grp[1];
/* Fill the Resource Group with Shared Information attached */
memset(grp, 0, sizeof(*grp));
grp->shared_info_length = sizeof(struct acpi_csrt_shared_info);
grp->length = sizeof(struct acpi_csrt_group) + grp->shared_info_length;
/* TODO: All values below should come from U-Boot DT somehow */
sprintf((char *)&grp->vendor_id, "%04X", 0x8086);
grp->device_id = 0x11a2;
/* Fill the Resource Group Shared Information */
memset(si, 0, sizeof(*si));
si->major_version = 1;
si->minor_version = 0;
/* TODO: All values below should come from U-Boot DT somehow */
si->mmio_base_low = 0xff192000;
si->mmio_base_high = 0;
si->gsi_interrupt = 32;
si->interrupt_polarity = 1;
si->interrupt_mode = 0;
si->num_channels = 8;
si->dma_address_width = 32;
si->base_request_line = 0;
si->num_handshake_signals = 16;
si->max_block_size = 0x20000;
return grp->length;
}
u32 acpi_fill_csrt(u32 current)
{
current += acpi_fill_csrt_dma((struct acpi_csrt_group *)current);
return current;
}
void acpi_create_gnvs(struct acpi_global_nvs *gnvs)
{
struct udevice *dev;