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authorEric Anholt <eric@anholt.net>2010-05-07 21:30:03 (GMT)
committerEric Anholt <eric@anholt.net>2010-05-10 20:36:52 (GMT)
commit34dc4d4423dc342848d72be764832cbc0852854a (patch)
tree056402a4afc2b7ef2f4dee30a712ce847279c13a /Documentation/DocBook
parent3d8620cc5f8538364ee152811e2bd8713abb1d58 (diff)
parent722154e4cacf015161efe60009ae9be23d492296 (diff)
Merge remote branch 'origin/master' into drm-intel-next
Conflicts: drivers/gpu/drm/i915/i915_dma.c drivers/gpu/drm/i915/i915_drv.h drivers/gpu/drm/radeon/r300.c The BSD ringbuffer support that is landing in this branch significantly conflicts with the Ironlake PIPE_CONTROL fix on master, and requires it to be tested successfully anyway.
Diffstat (limited to 'Documentation/DocBook')
-rw-r--r--Documentation/DocBook/libata.tmpl49
1 files changed, 16 insertions, 33 deletions
diff --git a/Documentation/DocBook/libata.tmpl b/Documentation/DocBook/libata.tmpl
index ba99757..ff3e5be 100644
--- a/Documentation/DocBook/libata.tmpl
+++ b/Documentation/DocBook/libata.tmpl
@@ -107,10 +107,6 @@ void (*dev_config) (struct ata_port *, struct ata_device *);
issue of SET FEATURES - XFER MODE, and prior to operation.
</para>
<para>
- Called by ata_device_add() after ata_dev_identify() determines
- a device is present.
- </para>
- <para>
This entry may be specified as NULL in ata_port_operations.
</para>
@@ -154,8 +150,8 @@ unsigned int (*mode_filter) (struct ata_port *, struct ata_device *, unsigned in
<sect2><title>Taskfile read/write</title>
<programlisting>
-void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
-void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
+void (*sff_tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
+void (*sff_tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
</programlisting>
<para>
@@ -164,36 +160,35 @@ void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
hardware registers / DMA buffers, to obtain the current set of
taskfile register values.
Most drivers for taskfile-based hardware (PIO or MMIO) use
- ata_tf_load() and ata_tf_read() for these hooks.
+ ata_sff_tf_load() and ata_sff_tf_read() for these hooks.
</para>
</sect2>
<sect2><title>PIO data read/write</title>
<programlisting>
-void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
+void (*sff_data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
</programlisting>
<para>
All bmdma-style drivers must implement this hook. This is the low-level
operation that actually copies the data bytes during a PIO data
transfer.
-Typically the driver
-will choose one of ata_pio_data_xfer_noirq(), ata_pio_data_xfer(), or
-ata_mmio_data_xfer().
+Typically the driver will choose one of ata_sff_data_xfer_noirq(),
+ata_sff_data_xfer(), or ata_sff_data_xfer32().
</para>
</sect2>
<sect2><title>ATA command execute</title>
<programlisting>
-void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
+void (*sff_exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
</programlisting>
<para>
causes an ATA command, previously loaded with
->tf_load(), to be initiated in hardware.
- Most drivers for taskfile-based hardware use ata_exec_command()
+ Most drivers for taskfile-based hardware use ata_sff_exec_command()
for this hook.
</para>
@@ -218,8 +213,8 @@ command.
<sect2><title>Read specific ATA shadow registers</title>
<programlisting>
-u8 (*check_status)(struct ata_port *ap);
-u8 (*check_altstatus)(struct ata_port *ap);
+u8 (*sff_check_status)(struct ata_port *ap);
+u8 (*sff_check_altstatus)(struct ata_port *ap);
</programlisting>
<para>
@@ -227,20 +222,14 @@ u8 (*check_altstatus)(struct ata_port *ap);
hardware. On some hardware, reading the Status register has
the side effect of clearing the interrupt condition.
Most drivers for taskfile-based hardware use
- ata_check_status() for this hook.
- </para>
- <para>
- Note that because this is called from ata_device_add(), at
- least a dummy function that clears device interrupts must be
- provided for all drivers, even if the controller doesn't
- actually have a taskfile status register.
+ ata_sff_check_status() for this hook.
</para>
</sect2>
<sect2><title>Select ATA device on bus</title>
<programlisting>
-void (*dev_select)(struct ata_port *ap, unsigned int device);
+void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
</programlisting>
<para>
@@ -251,9 +240,7 @@ void (*dev_select)(struct ata_port *ap, unsigned int device);
</para>
<para>
Most drivers for taskfile-based hardware use
- ata_std_dev_select() for this hook. Controllers which do not
- support second drives on a port (such as SATA contollers) will
- use ata_noop_dev_select().
+ ata_sff_dev_select() for this hook.
</para>
</sect2>
@@ -441,13 +428,13 @@ void (*irq_clear) (struct ata_port *);
to struct ata_host_set.
</para>
<para>
- Most legacy IDE drivers use ata_interrupt() for the
+ Most legacy IDE drivers use ata_sff_interrupt() for the
irq_handler hook, which scans all ports in the host_set,
determines which queued command was active (if any), and calls
- ata_host_intr(ap,qc).
+ ata_sff_host_intr(ap,qc).
</para>
<para>
- Most legacy IDE drivers use ata_bmdma_irq_clear() for the
+ Most legacy IDE drivers use ata_sff_irq_clear() for the
irq_clear() hook, which simply clears the interrupt and error
flags in the DMA status register.
</para>
@@ -496,10 +483,6 @@ void (*host_stop) (struct ata_host_set *host_set);
data from port at this time.
</para>
<para>
- Many drivers use ata_port_stop() as this hook, which frees the
- PRD table.
- </para>
- <para>
->host_stop() is called after all ->port_stop() calls
have completed. The hook must finalize hardware shutdown, release DMA
and other resources, etc.

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