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Kernel: Move IO delay code to x86 architecture subdirectory
Many code patterns and hardware procedures rely on reliable delay in the microseconds granularity, and since they are using such delays which are valid cases, but should not rely on x86 specific code, we allow to determine in compile time the proper platform-specific code to use to invoke such delays.
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19 changed files with 96 additions and 54 deletions
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@ -6,6 +6,7 @@
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*/
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#include <AK/Platform.h>
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#include <Kernel/Arch/Delay.h>
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#include <Kernel/Bus/PCI/API.h>
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#include <Kernel/Bus/USB/UHCI/UHCIController.h>
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#include <Kernel/Bus/USB/USBRequest.h>
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@ -633,7 +634,7 @@ void UHCIController::reset_port(u8 port)
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// Wait at least 50 ms for the port to reset.
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// This is T DRSTR in the USB 2.0 Specification Page 186 Table 7-13.
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constexpr u16 reset_delay = 50 * 1000;
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IO::delay(reset_delay);
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microseconds_delay(reset_delay);
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port_data &= ~UHCI_PORTSC_PORT_RESET;
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if (port == 0)
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@ -644,7 +645,7 @@ void UHCIController::reset_port(u8 port)
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// Wait 10 ms for the port to recover.
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// This is T RSTRCY in the USB 2.0 Specification Page 188 Table 7-14.
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constexpr u16 reset_recovery_delay = 10 * 1000;
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IO::delay(reset_recovery_delay);
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microseconds_delay(reset_recovery_delay);
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port_data = port == 0 ? read_portsc1() : read_portsc2();
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port_data |= UHCI_PORTSC_PORT_ENABLED;
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