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sdhci: Add i.MX specific subtype of SDHCI

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IP block found on several generations of i.MX family does not use
vanilla SDHCI implementation and it comes with a number of quirks.

Introduce i.MX SDHCI subtype of SDHCI block to add code necessary to
support unmodified Linux guest driver.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Marcel Apfelbaum <marcel.apfelbaum@zoho.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org
Cc: yurovsky@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
[PMM: define and use ESDHC_UNDOCUMENTED_REG27]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Andrey Smirnov 2018-02-09 10:40:29 +00:00 • committed by Peter Maydell
parent 955f56d44a
commit fd1e5c8179
3 changed files with 265 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

13
include/hw/sd/sdhci.h
View file

@ -44,6 +44,7 @@ typedef struct SDHCIState {
AddressSpace sysbus_dma_as;
AddressSpace *dma_as;
MemoryRegion *dma_mr;
const MemoryRegionOps *io_ops;
QEMUTimer *insert_timer; /* timer for 'changing' sd card. */
QEMUTimer *transfer_timer;
@ -91,8 +92,18 @@ typedef struct SDHCIState {
/* Configurable properties */
bool pending_insert_quirk; /* Quirk for Raspberry Pi card insert int */
uint32_t quirks;
} SDHCIState;
/*
* Controller does not provide transfer-complete interrupt when not
* busy.
*
* NOTE: This definition is taken out of Linux kernel and so the
* original bit number is preserved
*/
#define SDHCI_QUIRK_NO_BUSY_IRQ BIT(14)
#define TYPE_PCI_SDHCI "sdhci-pci"
#define PCI_SDHCI(obj) OBJECT_CHECK(SDHCIState, (obj), TYPE_PCI_SDHCI)
@ -100,4 +111,6 @@ typedef struct SDHCIState {
#define SYSBUS_SDHCI(obj) \
OBJECT_CHECK(SDHCIState, (obj), TYPE_SYSBUS_SDHCI)
#define TYPE_IMX_USDHC "imx-usdhc"
#endif /* SDHCI_H */