Revision a20303725ec31ea0fcf498f1885b1d4245a4ee56 authored by Robin Murphy on 10 August 2016, 12:02:17 UTC, committed by Arnd Bergmann on 10 August 2016, 20:58:09 UTC
Clearly QEMU is very permissive in how its PL310 model may be set up, but the real hardware turns out to be far more particular about things actually being correct. Fix up the DT description so that the real thing actually boots: - The arm,data-latency and arm,tag-latency properties need 3 cells to be valid, otherwise we end up retaining the default 8-cycle latencies which leads pretty quickly to lockup. - The arm,dirty-latency property is only relevant to L210/L220, so get rid of it. - The cache geometry override also leads to lockup and/or general misbehaviour. Irritatingly, the manual doesn't state the actual PL310 configuration, but based on the boardfile code and poking registers from the Boot Monitor, it would seem to be 8 sets of 16KB ways. With that, we can successfully boot to enjoy the fun of mismatched FPUs... Cc: stable@vger.kernel.org Signed-off-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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cmp.h
#ifndef SOUND_FIREWIRE_CMP_H_INCLUDED
#define SOUND_FIREWIRE_CMP_H_INCLUDED
#include <linux/mutex.h>
#include <linux/types.h>
#include "iso-resources.h"
struct fw_unit;
enum cmp_direction {
CMP_INPUT = 0,
CMP_OUTPUT,
};
/**
* struct cmp_connection - manages an isochronous connection to a device
* @speed: the connection's actual speed
*
* This structure manages (using CMP) an isochronous stream between the local
* computer and a device's input plug (iPCR) and output plug (oPCR).
*
* There is no corresponding oPCR created on the local computer, so it is not
* possible to overlay connections on top of this one.
*/
struct cmp_connection {
int speed;
/* private: */
bool connected;
struct mutex mutex;
struct fw_iso_resources resources;
__be32 last_pcr_value;
unsigned int pcr_index;
unsigned int max_speed;
enum cmp_direction direction;
};
int cmp_connection_init(struct cmp_connection *connection,
struct fw_unit *unit,
enum cmp_direction direction,
unsigned int pcr_index);
int cmp_connection_check_used(struct cmp_connection *connection, bool *used);
void cmp_connection_destroy(struct cmp_connection *connection);
int cmp_connection_establish(struct cmp_connection *connection,
unsigned int max_payload);
int cmp_connection_update(struct cmp_connection *connection);
void cmp_connection_break(struct cmp_connection *connection);
#endif
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