diff options
| author | Marcin Wojtas <mw@FreeBSD.org> | 2020-06-24 12:15:27 +0000 |
|---|---|---|
| committer | Marcin Wojtas <mw@FreeBSD.org> | 2020-06-24 12:15:27 +0000 |
| commit | fab2a758cc6b8377686cf3906478596209c0e64e (patch) | |
| tree | f3744cba80058ded76281d9c7f1b0910c41f0e16 /sys/dev/uart | |
| parent | f29bf91a239341afb61257c1e20ff4ebfac13438 (diff) | |
Notes
Diffstat (limited to 'sys/dev/uart')
| -rw-r--r-- | sys/dev/uart/uart_cpu_acpi.c | 43 |
1 files changed, 39 insertions, 4 deletions
diff --git a/sys/dev/uart/uart_cpu_acpi.c b/sys/dev/uart/uart_cpu_acpi.c index 13b7aa47e784..1e46462fc58a 100644 --- a/sys/dev/uart/uart_cpu_acpi.c +++ b/sys/dev/uart/uart_cpu_acpi.c @@ -120,11 +120,46 @@ uart_cpu_acpi_spcr(int devtype, struct uart_devinfo *di) (int)spcr->SerialPort.SpaceId); goto out; } - if (spcr->SerialPort.AccessWidth == 0) + switch (spcr->SerialPort.AccessWidth) { + case 0: /* EFI_ACPI_6_0_UNDEFINED */ + /* FALLTHROUGH */ + case 1: /* EFI_ACPI_6_0_BYTE */ + di->bas.regiowidth = 1; + break; + case 2: /* EFI_ACPI_6_0_WORD */ + di->bas.regiowidth = 2; + break; + case 3: /* EFI_ACPI_6_0_DWORD */ + di->bas.regiowidth = 4; + break; + case 4: /* EFI_ACPI_6_0_QWORD */ + di->bas.regiowidth = 8; + break; + default: + printf("UART unsupported access width: %d!\n", + (int)spcr->SerialPort.AccessWidth); + goto out; + } + switch (spcr->SerialPort.BitWidth) { + case 0: + /* FALLTHROUGH */ + case 8: di->bas.regshft = 0; - else - di->bas.regshft = spcr->SerialPort.AccessWidth - 1; - di->bas.regiowidth = spcr->SerialPort.BitWidth / 8; + break; + case 16: + di->bas.regshft = 1; + break; + case 32: + di->bas.regshft = 2; + break; + case 64: + di->bas.regshft = 3; + break; + default: + printf("UART unsupported bit width: %d!\n", + (int)spcr->SerialPort.BitWidth); + goto out; + } switch (spcr->BaudRate) { case 0: /* Special value; means "keep current value unchanged". */ |