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Char/Misc driver patches for 3.19-rc1

Browse source 
Here's the big char/misc driver update for 3.19-rc1
 
 Lots of little things all over the place in different drivers, and a new
 subsystem, "coresight" has been added.  Full details are in the
 shortlog.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here's the big char/misc driver update for 3.19-rc1

  Lots of little things all over the place in different drivers, and a
  new subsystem, "coresight" has been added.  Full details are in the
  shortlog"

* tag 'char-misc-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (73 commits)
  parport: parport_pc, do not remove parent devices early
  spmi: Remove shutdown/suspend/resume kernel-doc
  carma-fpga-program: drop videobuf dependency
  carma-fpga: drop videobuf dependency
  carma-fpga-program.c: fix compile errors
  i8k: Fix temperature bug handling in i8k_get_temp()
  cxl: Name interrupts in /proc/interrupt
  CXL: Return error to PSL if IRQ demultiplexing fails & print clearer warning
  coresight-replicator: remove .owner field for driver
  coresight: fixed comments in coresight.h
  coresight: fix typo in comment in coresight-priv.h
  coresight: bindings for coresight drivers
  coresight: Adding ABI documentation
  w1: support auto-load of w1_bq27000 module.
  w1: avoid potential u16 overflow
  cn: verify msg->len before making callback
  mei: export fw status registers through sysfs
  mei: read and print all six FW status registers
  mei: txe: add cherrytrail device id
  mei: kill cached host and me csr values
  ...
This commit is contained in:
Linus Torvalds 2014-12-14 16:43:47 -08:00
commit 6ae840e7cc
93 changed files with 9174 additions and 1177 deletions
Download patch file Download diff file Expand all files Collapse all files

24
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What: /sys/bus/coresight/devices/<memory_map>.etb/enable_sink
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Add/remove a sink from a trace path. There can be multiple
source for a single sink.
ex: echo 1 > /sys/bus/coresight/devices/20010000.etb/enable_sink
What: /sys/bus/coresight/devices/<memory_map>.etb/status
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) List various control and status registers. The specific
layout and content is driver specific.
What: /sys/bus/coresight/devices/<memory_map>.etb/trigger_cntr
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Disables write access to the Trace RAM by stopping the
formatter after a defined number of words have been stored
following the trigger event. The number of 32-bit words written
into the Trace RAM following the trigger event is equal to the
value stored in this register+1 (from ARM ETB-TRM).

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What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/enable_source
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Enable/disable tracing on this specific trace entiry.
Enabling a source implies the source has been configured
properly and a sink has been identidifed for it. The path
of coresight components linking the source to the sink is
configured and managed automatically by the coresight framework.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/status
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) List various control and status registers. The specific
layout and content is driver specific.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_idx
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: Select which address comparator or pair (of comparators) to
work with.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_acctype
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with @addr_idx. Specifies
characteristics about the address comparator being configure,
for example the access type, the kind of instruction to trace,
processor contect ID to trigger on, etc. Individual fields in
the access type register may vary on the version of the trace
entity.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_range
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with @addr_idx. Specifies the range of
addresses to trigger on. Inclusion or exclusion is specificed
in the corresponding access type register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_single
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with @addr_idx. Specifies the single
address to trigger on, highly influenced by the configuration
options of the corresponding access type register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_start
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with @addr_idx. Specifies the single
address to start tracing on, highly influenced by the
configuration options of the corresponding access type register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/addr_stop
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with @addr_idx. Specifies the single
address to stop tracing on, highly influenced by the
configuration options of the corresponding access type register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_idx
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Specifies the counter to work on.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with cntr_idx, give access to the
counter event register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_val
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with cntr_idx, give access to the
counter value register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_rld_val
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with cntr_idx, give access to the
counter reload value register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/cntr_rld_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used in conjunction with cntr_idx, give access to the
counter reload event register.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_idx
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Specifies the index of the context ID register to be
selected.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_mask
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Mask to apply to all the context ID comparator.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/ctxid_val
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used with the ctxid_idx, specify with context ID to trigger
on.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/enable_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines which event triggers a trace.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/etmsr
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Gives access to the ETM status register, which holds
programming information and status on certains events.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/fifofull_level
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Number of byte left in the fifo before considering it full.
Depending on the tracer's version, can also hold threshold for
data suppression.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/mode
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Interface with the driver's 'mode' field, controlling
various aspect of the trace entity such as time stamping,
context ID size and cycle accurate tracing. Driver specific
and bound to change depending on the driver.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_addr_cmp
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Provides the number of address comparators pairs accessible
on a trace unit, as specified by bit 3:0 of register ETMCCR.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_cntr
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Provides the number of counters accessible on a trace unit,
as specified by bit 15:13 of register ETMCCR.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/nr_ctxid_cmp
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Provides the number of context ID comparator available on a
trace unit, as specified by bit 25:24 of register ETMCCR.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/reset
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (W) Cancels all configuration on a trace unit and set it back
to its boot configuration.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_12_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines the event that causes the sequencer to transition
from state 1 to state 2.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_13_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines the event that causes the sequencer to transition
from state 1 to state 3.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_21_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines the event that causes the sequencer to transition
from state 2 to state 1.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_23_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines the event that causes the sequencer to transition
from state 2 to state 3.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_31_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines the event that causes the sequencer to transition
from state 3 to state 1.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/seq_32_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines the event that causes the sequencer to transition
from state 3 to state 2.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/curr_seq_state
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Holds the current state of the sequencer.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/sync_freq
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Holds the trace synchronization frequency value - must be
programmed with the various implementation behavior in mind.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/timestamp_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines an event that requests the insertion of a timestamp
into the trace stream.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/traceid
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Holds the trace ID that will appear in the trace stream
coming from this trace entity.
What: /sys/bus/coresight/devices/<memory_map>.[etm|ptm]/trigger_event
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Define the event that controls the trigger.

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What: /sys/bus/coresight/devices/<memory_map>.funnel/funnel_ctrl
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Enables the slave ports and defines the hold time of the
slave ports.
What: /sys/bus/coresight/devices/<memory_map>.funnel/priority
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Defines input port priority order.

8
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What: /sys/bus/coresight/devices/<memory_map>.tmc/trigger_cntr
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Disables write access to the Trace RAM by stopping the
formatter after a defined number of words have been stored
following the trigger event. Additional interface for this
driver are expected to be added as it matures.

2
Documentation/DocBook/uio-howto.tmpl
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@ -540,7 +540,7 @@ appears in sysfs.
</para></listitem>
<listitem><para>
<varname>unsigned long size</varname>: Fill in the size of the
<varname>resource_size_t size</varname>: Fill in the size of the
memory block that <varname>addr</varname> points to. If <varname>size</varname>
is zero, the mapping is considered unused. Note that you
<emphasis>must</emphasis> initialize <varname>size</varname> with zero for

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* CoreSight Components:
CoreSight components are compliant with the ARM CoreSight architecture
specification and can be connected in various topologies to suit a particular
SoCs tracing needs. These trace components can generally be classified as
sinks, links and sources. Trace data produced by one or more sources flows
through the intermediate links connecting the source to the currently selected
sink. Each CoreSight component device should use these properties to describe
its hardware characteristcs.
* Required properties for all components *except* non-configurable replicators:
* compatible: These have to be supplemented with "arm,primecell" as
drivers are using the AMBA bus interface. Possible values include:
- "arm,coresight-etb10", "arm,primecell";
- "arm,coresight-tpiu", "arm,primecell";
- "arm,coresight-tmc", "arm,primecell";
- "arm,coresight-funnel", "arm,primecell";
- "arm,coresight-etm3x", "arm,primecell";
* reg: physical base address and length of the register
set(s) of the component.
* clocks: the clock associated to this component.
* clock-names: the name of the clock as referenced by the code.
Since we are using the AMBA framework, the name should be
"apb_pclk".
* port or ports: The representation of the component's port
layout using the generic DT graph presentation found in
"bindings/graph.txt".
* Required properties for devices that don't show up on the AMBA bus, such as
non-configurable replicators:
* compatible: Currently supported value is (note the absence of the
AMBA markee):
- "arm,coresight-replicator"
* id: a unique number that will identify this replicator.
* port or ports: same as above.
* Optional properties for ETM/PTMs:
* arm,cp14: must be present if the system accesses ETM/PTM management
registers via co-processor 14.
* cpu: the cpu phandle this ETM/PTM is affined to. When omitted the
source is considered to belong to CPU0.
* Optional property for TMC:
* arm,buffer-size: size of contiguous buffer space for TMC ETR
(embedded trace router)
Example:
1. Sinks
etb@20010000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0 0x20010000 0 0x1000>;
coresight-default-sink;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
etb_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator_out_port0>;
};
};
};
tpiu@20030000 {
compatible = "arm,coresight-tpiu", "arm,primecell";
reg = <0 0x20030000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
tpiu_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator_out_port1>;
};
};
};
2. Links
replicator {
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
compatible = "arm,coresight-replicator";
/* this will show up in debugfs as "0.replicator" */
id = <0>;
ports {
#address-cells = <1>;
#size-cells = <0>;
/* replicator output ports */
port@0 {
reg = <0>;
replicator_out_port0: endpoint {
remote-endpoint = <&etb_in_port>;
};
};
port@1 {
reg = <1>;
replicator_out_port1: endpoint {
remote-endpoint = <&tpiu_in_port>;
};
};
/* replicator input port */
port@2 {
reg = <0>;
replicator_in_port0: endpoint {
slave-mode;
remote-endpoint = <&funnel_out_port0>;
};
};
};
};
funnel@20040000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0x20040000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* funnel output port */
port@0 {
reg = <0>;
funnel_out_port0: endpoint {
remote-endpoint =
<&replicator_in_port0>;
};
};
/* funnel input ports */
port@1 {
reg = <0>;
funnel_in_port0: endpoint {
slave-mode;
remote-endpoint = <&ptm0_out_port>;
};
};
port@2 {
reg = <1>;
funnel_in_port1: endpoint {
slave-mode;
remote-endpoint = <&ptm1_out_port>;
};
};
port@3 {
reg = <2>;
funnel_in_port2: endpoint {
slave-mode;
remote-endpoint = <&etm0_out_port>;
};
};
};
};
3. Sources
ptm@2201c000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2201c000 0 0x1000>;
cpu = <&cpu0>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
ptm0_out_port: endpoint {
remote-endpoint = <&funnel_in_port0>;
};
};
};
ptm@2201d000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2201d000 0 0x1000>;
cpu = <&cpu1>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
ptm1_out_port: endpoint {
remote-endpoint = <&funnel_in_port1>;
};
};
};

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Coresight - HW Assisted Tracing on ARM
======================================
Author: Mathieu Poirier <mathieu.poirier@linaro.org>
Date: September 11th, 2014
Introduction
------------
Coresight is an umbrella of technologies allowing for the debugging of ARM
based SoC. It includes solutions for JTAG and HW assisted tracing. This
document is concerned with the latter.
HW assisted tracing is becoming increasingly useful when dealing with systems
that have many SoCs and other components like GPU and DMA engines. ARM has
developed a HW assisted tracing solution by means of different components, each
being added to a design at systhesis time to cater to specific tracing needs.
Compoments are generally categorised as source, link and sinks and are
(usually) discovered using the AMBA bus.
"Sources" generate a compressed stream representing the processor instruction
path based on tracing scenarios as configured by users. From there the stream
flows through the coresight system (via ATB bus) using links that are connecting
the emanating source to a sink(s). Sinks serve as endpoints to the coresight
implementation, either storing the compressed stream in a memory buffer or
creating an interface to the outside world where data can be transferred to a
host without fear of filling up the onboard coresight memory buffer.
At typical coresight system would look like this:
*****************************************************************
**************************** AMBA AXI ****************************===||
***************************************************************** ||
^ ^ | ||
| | * **
0000000 ::::: 0000000 ::::: ::::: @@@@@@@ ||||||||||||
0 CPU 0<-->: C : 0 CPU 0<-->: C : : C : @ STM @ || System ||
|->0000000 : T : |->0000000 : T : : T :<--->@@@@@ || Memory ||
| #######<-->: I : | #######<-->: I : : I : @@@<-| ||||||||||||
| # ETM # ::::: | # PTM # ::::: ::::: @ |
| ##### ^ ^ | ##### ^ ! ^ ! . | |||||||||
| |->### | ! | |->### | ! | ! . | || DAP ||
| | # | ! | | # | ! | ! . | |||||||||
| | . | ! | | . | ! | ! . | | |
| | . | ! | | . | ! | ! . | | *
| | . | ! | | . | ! | ! . | | SWD/
| | . | ! | | . | ! | ! . | | JTAG
*****************************************************************<-|
*************************** AMBA Debug ABP ************************
*****************************************************************
| . ! . ! ! . |
| . * . * * . |
*****************************************************************
******************** Cross Trigger Matrix (CTM) *******************
*****************************************************************
| . ^ . . |
| * ! * * |
*****************************************************************
****************** AMBA Advanced Trace Bus (ATB) ******************
*****************************************************************
| ! =============== |
| * ===== F =====<---------|
| ::::::::: ==== U ====
|-->:: CTI ::<!! === N ===
| ::::::::: ! == N ==
| ^ * == E ==
| ! &&&&&&&&& IIIIIII == L ==
|------>&& ETB &&<......II I =======
| ! &&&&&&&&& II I .
| ! I I .
| ! I REP I<..........
| ! I I
| !!>&&&&&&&&& II I *Source: ARM ltd.
|------>& TPIU &<......II I DAP = Debug Access Port
&&&&&&&&& IIIIIII ETM = Embedded Trace Macrocell
; PTM = Program Trace Macrocell
; CTI = Cross Trigger Interface
* ETB = Embedded Trace Buffer
To trace port TPIU= Trace Port Interface Unit
SWD = Serial Wire Debug
While on target configuration of the components is done via the ABP bus,
all trace data are carried out-of-band on the ATB bus. The CTM provides
a way to aggregate and distribute signals between CoreSight components.
The coresight framework provides a central point to represent, configure and
manage coresight devices on a platform. This first implementation centers on
the basic tracing functionality, enabling components such ETM/PTM, funnel,
replicator, TMC, TPIU and ETB. Future work will enable more
intricate IP blocks such as STM and CTI.
Acronyms and Classification
---------------------------
Acronyms:
PTM: Program Trace Macrocell
ETM: Embedded Trace Macrocell
STM: System trace Macrocell
ETB: Embedded Trace Buffer
ITM: Instrumentation Trace Macrocell
TPIU: Trace Port Interface Unit
TMC-ETR: Trace Memory Controller, configured as Embedded Trace Router
TMC-ETF: Trace Memory Controller, configured as Embedded Trace FIFO
CTI: Cross Trigger Interface
Classification:
Source:
ETMv3.x ETMv4, PTMv1.0, PTMv1.1, STM, STM500, ITM
Link:
Funnel, replicator (intelligent or not), TMC-ETR
Sinks:
ETBv1.0, ETB1.1, TPIU, TMC-ETF
Misc:
CTI
Device Tree Bindings
----------------------
See Documentation/devicetree/bindings/arm/coresight.txt for details.
As of this writing drivers for ITM, STMs and CTIs are not provided but are
expected to be added as the solution matures.
Framework and implementation
----------------------------
The coresight framework provides a central point to represent, configure and
manage coresight devices on a platform. Any coresight compliant device can
register with the framework for as long as they use the right APIs:
struct coresight_device *coresight_register(struct coresight_desc *desc);
void coresight_unregister(struct coresight_device *csdev);
The registering function is taking a "struct coresight_device *csdev" and
register the device with the core framework. The unregister function takes
a reference to a "strut coresight_device", obtained at registration time.
If everything goes well during the registration process the new devices will
show up under /sys/bus/coresight/devices, as showns here for a TC2 platform:
root:~# ls /sys/bus/coresight/devices/
replicator 20030000.tpiu 2201c000.ptm 2203c000.etm 2203e000.etm
20010000.etb 20040000.funnel 2201d000.ptm 2203d000.etm
root:~#
The functions take a "struct coresight_device", which looks like this:
struct coresight_desc {
enum coresight_dev_type type;
struct coresight_dev_subtype subtype;
const struct coresight_ops *ops;
struct coresight_platform_data *pdata;
struct device *dev;
const struct attribute_group **groups;
};
The "coresight_dev_type" identifies what the device is, i.e, source link or
sink while the "coresight_dev_subtype" will characterise that type further.
The "struct coresight_ops" is mandatory and will tell the framework how to
perform base operations related to the components, each component having
a different set of requirement. For that "struct coresight_ops_sink",
"struct coresight_ops_link" and "struct coresight_ops_source" have been
provided.
The next field, "struct coresight_platform_data *pdata" is acquired by calling
"of_get_coresight_platform_data()", as part of the driver's _probe routine and
"struct device *dev" gets the device reference embedded in the "amba_device":
static int etm_probe(struct amba_device *adev, const struct amba_id *id)
{
...
...
drvdata->dev = &adev->dev;
...
}
Specific class of device (source, link, or sink) have generic operations
that can be performed on them (see "struct coresight_ops"). The
"**groups" is a list of sysfs entries pertaining to operations
specific to that component only. "Implementation defined" customisations are
expected to be accessed and controlled using those entries.
Last but not least, "struct module *owner" is expected to be set to reflect
the information carried in "THIS_MODULE".
How to use
----------
Before trace collection can start, a coresight sink needs to be identify.
There is no limit on the amount of sinks (nor sources) that can be enabled at
any given moment. As a generic operation, all device pertaining to the sink
class will have an "active" entry in sysfs:
root:/sys/bus/coresight/devices# ls
replicator 20030000.tpiu 2201c000.ptm 2203c000.etm 2203e000.etm
20010000.etb 20040000.funnel 2201d000.ptm 2203d000.etm
root:/sys/bus/coresight/devices# ls 20010000.etb
enable_sink status trigger_cntr
root:/sys/bus/coresight/devices# echo 1 > 20010000.etb/enable_sink
root:/sys/bus/coresight/devices# cat 20010000.etb/enable_sink
1
root:/sys/bus/coresight/devices#
At boot time the current etm3x driver will configure the first address
comparator with "_stext" and "_etext", essentially tracing any instruction
that falls within that range. As such "enabling" a source will immediately
trigger a trace capture:
root:/sys/bus/coresight/devices# echo 1 > 2201c000.ptm/enable_source
root:/sys/bus/coresight/devices# cat 2201c000.ptm/enable_source
1
root:/sys/bus/coresight/devices# cat 20010000.etb/status
Depth: 0x2000
Status: 0x1
RAM read ptr: 0x0
RAM wrt ptr: 0x19d3 <----- The write pointer is moving
Trigger cnt: 0x0
Control: 0x1
Flush status: 0x0
Flush ctrl: 0x2001
root:/sys/bus/coresight/devices#
Trace collection is stopped the same way:
root:/sys/bus/coresight/devices# echo 0 > 2201c000.ptm/enable_source
root:/sys/bus/coresight/devices#
The content of the ETB buffer can be harvested directly from /dev:
root:/sys/bus/coresight/devices# dd if=/dev/20010000.etb \
of=~/cstrace.bin
64+0 records in
64+0 records out
32768 bytes (33 kB) copied, 0.00125258 s, 26.2 MB/s
root:/sys/bus/coresight/devices#
The file cstrace.bin can be decompressed using "ptm2human", DS-5 or Trace32.
Following is a DS-5 output of an experimental loop that increments a variable up
to a certain value. The example is simple and yet provides a glimpse of the
wealth of possibilities that coresight provides.
Info Tracing enabled
Instruction 106378866 0x8026B53C E52DE004 false PUSH {lr}
Instruction 0 0x8026B540 E24DD00C false SUB sp,sp,#0xc
Instruction 0 0x8026B544 E3A03000 false MOV r3,#0
Instruction 0 0x8026B548 E58D3004 false STR r3,[sp,#4]
Instruction 0 0x8026B54C E59D3004 false LDR r3,[sp,#4]
Instruction 0 0x8026B550 E3530004 false CMP r3,#4
Instruction 0 0x8026B554 E2833001 false ADD r3,r3,#1
Instruction 0 0x8026B558 E58D3004 false STR r3,[sp,#4]
Instruction 0 0x8026B55C DAFFFFFA true BLE {pc}-0x10 ; 0x8026b54c
Timestamp Timestamp: 17106715833
Instruction 319 0x8026B54C E59D3004 false LDR r3,[sp,#4]
Instruction 0 0x8026B550 E3530004 false CMP r3,#4
Instruction 0 0x8026B554 E2833001 false ADD r3,r3,#1
Instruction 0 0x8026B558 E58D3004 false STR r3,[sp,#4]
Instruction 0 0x8026B55C DAFFFFFA true BLE {pc}-0x10 ; 0x8026b54c
Instruction 9 0x8026B54C E59D3004 false LDR r3,[sp,#4]
Instruction 0 0x8026B550 E3530004 false CMP r3,#4
Instruction 0 0x8026B554 E2833001 false ADD r3,r3,#1
Instruction 0 0x8026B558 E58D3004 false STR r3,[sp,#4]
Instruction 0 0x8026B55C DAFFFFFA true BLE {pc}-0x10 ; 0x8026b54c
Instruction 7 0x8026B54C E59D3004 false LDR r3,[sp,#4]
Instruction 0 0x8026B550 E3530004 false CMP r3,#4
Instruction 0 0x8026B554 E2833001 false ADD r3,r3,#1
Instruction 0 0x8026B558 E58D3004 false STR r3,[sp,#4]
Instruction 0 0x8026B55C DAFFFFFA true BLE {pc}-0x10 ; 0x8026b54c
Instruction 7 0x8026B54C E59D3004 false LDR r3,[sp,#4]
Instruction 0 0x8026B550 E3530004 false CMP r3,#4
Instruction 0 0x8026B554 E2833001 false ADD r3,r3,#1
Instruction 0 0x8026B558 E58D3004 false STR r3,[sp,#4]
Instruction 0 0x8026B55C DAFFFFFA true BLE {pc}-0x10 ; 0x8026b54c
Instruction 10 0x8026B54C E59D3004 false LDR r3,[sp,#4]
Instruction 0 0x8026B550 E3530004 false CMP r3,#4
Instruction 0 0x8026B554 E2833001 false ADD r3,r3,#1
Instruction 0 0x8026B558 E58D3004 false STR r3,[sp,#4]
Instruction 0 0x8026B55C DAFFFFFA true BLE {pc}-0x10 ; 0x8026b54c
Instruction 6 0x8026B560 EE1D3F30 false MRC p15,#0x0,r3,c13,c0,#1
Instruction 0 0x8026B564 E1A0100D false MOV r1,sp
Instruction 0 0x8026B568 E3C12D7F false BIC r2,r1,#0x1fc0
Instruction 0 0x8026B56C E3C2203F false BIC r2,r2,#0x3f
Instruction 0 0x8026B570 E59D1004 false LDR r1,[sp,#4]
Instruction 0 0x8026B574 E59F0010 false LDR r0,[pc,#16] ; [0x8026B58C] = 0x80550368
Instruction 0 0x8026B578 E592200C false LDR r2,[r2,#0xc]
Instruction 0 0x8026B57C E59221D0 false LDR r2,[r2,#0x1d0]
Instruction 0 0x8026B580 EB07A4CF true BL {pc}+0x1e9344 ; 0x804548c4
Info Tracing enabled
Instruction 13570831 0x8026B584 E28DD00C false ADD sp,sp,#0xc
Instruction 0 0x8026B588 E8BD8000 true LDM sp!,{pc}
Timestamp Timestamp: 17107041535

9
MAINTAINERS
View file

@ -920,6 +920,15 @@ M: Hubert Feurstein <hubert.feurstein@contec.at>
S: Maintained
F: arch/arm/mach-ep93xx/micro9.c
ARM/CORESIGHT FRAMEWORK AND DRIVERS
M: Mathieu Poirier <mathieu.poirier@linaro.org>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: drivers/coresight/*
F: Documentation/trace/coresight.txt
F: Documentation/devicetree/bindings/arm/coresight.txt
F: Documentation/ABI/testing/sysfs-bus-coresight-devices-*
ARM/CORGI MACHINE SUPPORT
M: Richard Purdie <rpurdie@rpsys.net>
S: Maintained

63
arch/arm/Kconfig.debug
View file

@ -1452,14 +1452,6 @@ config EARLY_PRINTK
kernel low-level debugging functions. Add earlyprintk to your
kernel parameters to enable this console.
config OC_ETM
bool "On-chip ETM and ETB"
depends on ARM_AMBA
help
Enables the on-chip embedded trace macrocell and embedded trace
buffer driver that will allow you to collect traces of the
kernel code.
config ARM_KPROBES_TEST
tristate "Kprobes test module"
depends on KPROBES && MODULES
@ -1486,4 +1478,59 @@ config DEBUG_SET_MODULE_RONX
against certain classes of kernel exploits.
If in doubt, say "N".
menuconfig CORESIGHT
bool "CoreSight Tracing Support"
select ARM_AMBA
help
This framework provides a kernel interface for the CoreSight debug
and trace drivers to register themselves with. It's intended to build
a topological view of the CoreSight components based on a DT
specification and configure the right serie of components when a
trace source gets enabled.
if CORESIGHT
config CORESIGHT_LINKS_AND_SINKS
bool "CoreSight Link and Sink drivers"
help
This enables support for CoreSight link and sink drivers that are
responsible for transporting and collecting the trace data
respectively. Link and sinks are dynamically aggregated with a trace
entity at run time to form a complete trace path.
config CORESIGHT_LINK_AND_SINK_TMC
bool "Coresight generic TMC driver"
depends on CORESIGHT_LINKS_AND_SINKS
help
This enables support for the Trace Memory Controller driver. Depending
on its configuration the device can act as a link (embedded trace router
- ETR) or sink (embedded trace FIFO). The driver complies with the
generic implementation of the component without special enhancement or
added features.
config CORESIGHT_SINK_TPIU
bool "Coresight generic TPIU driver"
depends on CORESIGHT_LINKS_AND_SINKS
help
This enables support for the Trace Port Interface Unit driver, responsible
for bridging the gap between the on-chip coresight components and a trace
port collection engine, typically connected to an external host for use
case capturing more traces than the on-board coresight memory can handle.
config CORESIGHT_SINK_ETBV10
bool "Coresight ETBv1.0 driver"
depends on CORESIGHT_LINKS_AND_SINKS
help
This enables support for the Embedded Trace Buffer version 1.0 driver
that complies with the generic implementation of the component without
special enhancement or added features.
config CORESIGHT_SOURCE_ETM3X
bool "CoreSight Embedded Trace Macrocell 3.x driver"
select CORESIGHT_LINKS_AND_SINKS
help
This driver provides support for processor ETM3.x and PTM1.x modules,
which allows tracing the instructions that a processor is executing
This is primarily useful for instruction level tracing. Depending
the ETM version data tracing may also be available.
endif
endmenu

717
arch/arm/boot/dts/hip04.dtsi
View file

@ -190,6 +190,12 @@
clock-frequency = <168000000>;
};
clk_375m: clk_375m {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <375000000>;
};
soc {
/* It's a 32-bit SoC. */
#address-cells = <1>;
@ -264,4 +270,715 @@
};
};
etb@0,e3c42000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0 0xe3c42000 0 0x1000>;
coresight-default-sink;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
port {
etb0_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator0_out_port0>;
};
};
};
etb@0,e3c82000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0 0xe3c82000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
port {
etb1_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator1_out_port0>;
};
};
};
etb@0,e3cc2000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0 0xe3cc2000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
port {
etb2_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator2_out_port0>;
};
};
};
etb@0,e3d02000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0 0xe3d02000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
port {
etb3_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator3_out_port0>;
};
};
};
tpiu@0,e3c05000 {
compatible = "arm,coresight-tpiu", "arm,primecell";
reg = <0 0xe3c05000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
port {
tpiu_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&funnel4_out_port0>;
};
};
};
replicator0 {
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
compatible = "arm,coresight-replicator";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* replicator output ports */
port@0 {
reg = <0>;
replicator0_out_port0: endpoint {
remote-endpoint = <&etb0_in_port>;
};
};
port@1 {
reg = <1>;
replicator0_out_port1: endpoint {
remote-endpoint = <&funnel4_in_port0>;
};
};
/* replicator input port */
port@2 {
reg = <0>;
replicator0_in_port0: endpoint {
slave-mode;
remote-endpoint = <&funnel0_out_port0>;
};
};
};
};
replicator1 {
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
compatible = "arm,coresight-replicator";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* replicator output ports */
port@0 {
reg = <0>;
replicator1_out_port0: endpoint {
remote-endpoint = <&etb1_in_port>;
};
};
port@1 {
reg = <1>;
replicator1_out_port1: endpoint {
remote-endpoint = <&funnel4_in_port1>;
};
};
/* replicator input port */
port@2 {
reg = <0>;
replicator1_in_port0: endpoint {
slave-mode;
remote-endpoint = <&funnel1_out_port0>;
};
};
};
};
replicator2 {
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
compatible = "arm,coresight-replicator";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* replicator output ports */
port@0 {
reg = <0>;
replicator2_out_port0: endpoint {
remote-endpoint = <&etb2_in_port>;
};
};
port@1 {
reg = <1>;
replicator2_out_port1: endpoint {
remote-endpoint = <&funnel4_in_port2>;
};
};
/* replicator input port */
port@2 {
reg = <0>;
replicator2_in_port0: endpoint {
slave-mode;
remote-endpoint = <&funnel2_out_port0>;
};
};
};
};
replicator3 {
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
compatible = "arm,coresight-replicator";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* replicator output ports */
port@0 {
reg = <0>;
replicator3_out_port0: endpoint {
remote-endpoint = <&etb3_in_port>;
};
};
port@1 {
reg = <1>;
replicator3_out_port1: endpoint {
remote-endpoint = <&funnel4_in_port3>;
};
};
/* replicator input port */
port@2 {
reg = <0>;
replicator3_in_port0: endpoint {
slave-mode;
remote-endpoint = <&funnel3_out_port0>;
};
};
};
};
funnel@0,e3c41000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0xe3c41000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* funnel output port */
port@0 {
reg = <0>;
funnel0_out_port0: endpoint {
remote-endpoint =
<&replicator0_in_port0>;
};
};
/* funnel input ports */
port@1 {
reg = <0>;
funnel0_in_port0: endpoint {
slave-mode;
remote-endpoint = <&ptm0_out_port>;
};
};
port@2 {
reg = <1>;
funnel0_in_port1: endpoint {
slave-mode;
remote-endpoint = <&ptm1_out_port>;
};
};
port@3 {
reg = <2>;
funnel0_in_port2: endpoint {
slave-mode;
remote-endpoint = <&ptm2_out_port>;
};
};
port@4 {
reg = <3>;
funnel0_in_port3: endpoint {
slave-mode;
remote-endpoint = <&ptm3_out_port>;
};
};
};
};
funnel@0,e3c81000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0xe3c81000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* funnel output port */
port@0 {
reg = <0>;
funnel1_out_port0: endpoint {
remote-endpoint =
<&replicator1_in_port0>;
};
};
/* funnel input ports */
port@1 {
reg = <0>;
funnel1_in_port0: endpoint {
slave-mode;
remote-endpoint = <&ptm4_out_port>;
};
};
port@2 {
reg = <1>;
funnel1_in_port1: endpoint {
slave-mode;
remote-endpoint = <&ptm5_out_port>;
};
};
port@3 {
reg = <2>;
funnel1_in_port2: endpoint {
slave-mode;
remote-endpoint = <&ptm6_out_port>;
};
};
port@4 {
reg = <3>;
funnel1_in_port3: endpoint {
slave-mode;
remote-endpoint = <&ptm7_out_port>;
};
};
};
};
funnel@0,e3cc1000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0xe3cc1000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* funnel output port */
port@0 {
reg = <0>;
funnel2_out_port0: endpoint {
remote-endpoint =
<&replicator2_in_port0>;
};
};
/* funnel input ports */
port@1 {
reg = <0>;
funnel2_in_port0: endpoint {
slave-mode;
remote-endpoint = <&ptm8_out_port>;
};
};
port@2 {
reg = <1>;
funnel2_in_port1: endpoint {
slave-mode;
remote-endpoint = <&ptm9_out_port>;
};
};
port@3 {
reg = <2>;
funnel2_in_port2: endpoint {
slave-mode;
remote-endpoint = <&ptm10_out_port>;
};
};
port@4 {
reg = <3>;
funnel2_in_port3: endpoint {
slave-mode;
remote-endpoint = <&ptm11_out_port>;
};
};
};
};
funnel@0,e3d01000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0xe3d01000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* funnel output port */
port@0 {
reg = <0>;
funnel3_out_port0: endpoint {
remote-endpoint =
<&replicator3_in_port0>;
};
};
/* funnel input ports */
port@1 {
reg = <0>;
funnel3_in_port0: endpoint {
slave-mode;
remote-endpoint = <&ptm12_out_port>;
};
};
port@2 {
reg = <1>;
funnel3_in_port1: endpoint {
slave-mode;
remote-endpoint = <&ptm13_out_port>;
};
};
port@3 {
reg = <2>;
funnel3_in_port2: endpoint {
slave-mode;
remote-endpoint = <&ptm14_out_port>;
};
};
port@4 {
reg = <3>;
funnel3_in_port3: endpoint {
slave-mode;
remote-endpoint = <&ptm15_out_port>;
};
};
};
};
funnel@0,e3c04000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0xe3c04000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* funnel output port */
port@0 {
reg = <0>;
funnel4_out_port0: endpoint {
remote-endpoint = <&tpiu_in_port>;
};
};
/* funnel input ports */
port@1 {
reg = <0>;
funnel4_in_port0: endpoint {
slave-mode;
remote-endpoint =
<&replicator0_out_port1>;
};
};
port@2 {
reg = <1>;
funnel4_in_port1: endpoint {
slave-mode;
remote-endpoint =
<&replicator1_out_port1>;
};
};
port@3 {
reg = <2>;
funnel4_in_port2: endpoint {
slave-mode;
remote-endpoint =
<&replicator2_out_port1>;
};
};
port@4 {
reg = <3>;
funnel4_in_port3: endpoint {
slave-mode;
remote-endpoint =
<&replicator3_out_port1>;
};
};
};
};
ptm@0,e3c7c000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3c7c000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU0>;
port {
ptm0_out_port: endpoint {
remote-endpoint = <&funnel0_in_port0>;
};
};
};
ptm@0,e3c7d000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3c7d000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU1>;
port {
ptm1_out_port: endpoint {
remote-endpoint = <&funnel0_in_port1>;
};
};
};
ptm@0,e3c7e000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3c7e000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU2>;
port {
ptm2_out_port: endpoint {
remote-endpoint = <&funnel0_in_port2>;
};
};
};
ptm@0,e3c7f000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3c7f000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU3>;
port {
ptm3_out_port: endpoint {
remote-endpoint = <&funnel0_in_port3>;
};
};
};
ptm@0,e3cbc000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cbc000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU4>;
port {
ptm4_out_port: endpoint {
remote-endpoint = <&funnel1_in_port0>;
};
};
};
ptm@0,e3cbd000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cbd000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU5>;
port {
ptm5_out_port: endpoint {
remote-endpoint = <&funnel1_in_port1>;
};
};
};
ptm@0,e3cbe000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cbe000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU6>;
port {
ptm6_out_port: endpoint {
remote-endpoint = <&funnel1_in_port2>;
};
};
};
ptm@0,e3cbf000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cbf000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU7>;
port {
ptm7_out_port: endpoint {
remote-endpoint = <&funnel1_in_port3>;
};
};
};
ptm@0,e3cfc000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cfc000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU8>;
port {
ptm8_out_port: endpoint {
remote-endpoint = <&funnel2_in_port0>;
};
};
};
ptm@0,e3cfd000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cfd000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU9>;
port {
ptm9_out_port: endpoint {
remote-endpoint = <&funnel2_in_port1>;
};
};
};
ptm@0,e3cfe000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cfe000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU10>;
port {
ptm10_out_port: endpoint {
remote-endpoint = <&funnel2_in_port2>;
};
};
};
ptm@0,e3cff000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3cff000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU11>;
port {
ptm11_out_port: endpoint {
remote-endpoint = <&funnel2_in_port3>;
};
};
};
ptm@0,e3d3c000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3d3c000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU12>;
port {
ptm12_out_port: endpoint {
remote-endpoint = <&funnel3_in_port0>;
};
};
};
ptm@0,e3d3d000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3d3d000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU13>;
port {
ptm13_out_port: endpoint {
remote-endpoint = <&funnel3_in_port1>;
};
};
};
ptm@0,e3d3e000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3d3e000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU14>;
port {
ptm14_out_port: endpoint {
remote-endpoint = <&funnel3_in_port2>;
};
};
};
ptm@0,e3d3f000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0xe3d3f000 0 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
cpu = <&CPU15>;
port {
ptm15_out_port: endpoint {
remote-endpoint = <&funnel3_in_port3>;
};
};
};
};

28
arch/arm/boot/dts/omap3-beagle-xm.dts
View file

@ -145,6 +145,34 @@
};
};
};
etb@5401b000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0x5401b000 0x1000>;
coresight-default-sink;
clocks = <&emu_src_ck>;
clock-names = "apb_pclk";
port {
etb_in: endpoint {
slave-mode;
remote-endpoint = <&etm_out>;
};
};
};
etm@54010000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0x54010000 0x1000>;
clocks = <&emu_src_ck>;
clock-names = "apb_pclk";
port {
etm_out: endpoint {
remote-endpoint = <&etb_in>;
};
};
};
};
&omap3_pmx_wkup {

28
arch/arm/boot/dts/omap3-beagle.dts
View file

@ -140,6 +140,34 @@
};
};
};
etb@540000000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0x5401b000 0x1000>;
coresight-default-sink;
clocks = <&emu_src_ck>;
clock-names = "apb_pclk";
port {
etb_in: endpoint {
slave-mode;
remote-endpoint = <&etm_out>;
};
};
};
etm@54010000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0x54010000 0x1000>;
clocks = <&emu_src_ck>;
clock-names = "apb_pclk";
port {
etm_out: endpoint {
remote-endpoint = <&etb_in>;
};
};
};
};
&omap3_pmx_wkup {

199
arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
View file

@ -358,6 +358,205 @@
};
};
etb@0,20010000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0 0x20010000 0 0x1000>;
coresight-default-sink;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
etb_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator_out_port0>;
};
};
};
tpiu@0,20030000 {
compatible = "arm,coresight-tpiu", "arm,primecell";
reg = <0 0x20030000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
tpiu_in_port: endpoint@0 {
slave-mode;
remote-endpoint = <&replicator_out_port1>;
};
};
};
replicator {
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
compatible = "arm,coresight-replicator";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* replicator output ports */
port@0 {
reg = <0>;
replicator_out_port0: endpoint {
remote-endpoint = <&etb_in_port>;
};
};
port@1 {
reg = <1>;
replicator_out_port1: endpoint {
remote-endpoint = <&tpiu_in_port>;
};
};
/* replicator input port */
port@2 {
reg = <0>;
replicator_in_port0: endpoint {
slave-mode;
remote-endpoint = <&funnel_out_port0>;
};
};
};
};
funnel@0,20040000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0x20040000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
ports {
#address-cells = <1>;
#size-cells = <0>;
/* funnel output port */
port@0 {
reg = <0>;
funnel_out_port0: endpoint {
remote-endpoint =
<&replicator_in_port0>;
};
};
/* funnel input ports */
port@1 {
reg = <0>;
funnel_in_port0: endpoint {
slave-mode;
remote-endpoint = <&ptm0_out_port>;
};
};
port@2 {
reg = <1>;
funnel_in_port1: endpoint {
slave-mode;
remote-endpoint = <&ptm1_out_port>;
};
};
port@3 {
reg = <2>;
funnel_in_port2: endpoint {
slave-mode;
remote-endpoint = <&etm0_out_port>;
};
};
/* Input port #3 is for ITM, not supported here */
port@4 {
reg = <4>;
funnel_in_port4: endpoint {
slave-mode;
remote-endpoint = <&etm1_out_port>;
};
};
port@5 {
reg = <5>;
funnel_in_port5: endpoint {
slave-mode;
remote-endpoint = <&etm2_out_port>;
};
};
};
};
ptm@0,2201c000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2201c000 0 0x1000>;
cpu = <&cpu0>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
ptm0_out_port: endpoint {
remote-endpoint = <&funnel_in_port0>;
};
};
};
ptm@0,2201d000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2201d000 0 0x1000>;
cpu = <&cpu1>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
ptm1_out_port: endpoint {
remote-endpoint = <&funnel_in_port1>;
};
};
};
etm@0,2203c000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2203c000 0 0x1000>;
cpu = <&cpu2>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
etm0_out_port: endpoint {
remote-endpoint = <&funnel_in_port2>;
};
};
};
etm@0,2203d000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2203d000 0 0x1000>;
cpu = <&cpu3>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
etm1_out_port: endpoint {
remote-endpoint = <&funnel_in_port4>;
};
};
};
etm@0,2203e000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2203e000 0 0x1000>;
cpu = <&cpu4>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
port {
etm2_out_port: endpoint {
remote-endpoint = <&funnel_in_port5>;
};
};
};
smb {
compatible = "simple-bus";

157
arch/arm/include/asm/hardware/coresight.h
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@ -1,157 +0,0 @@
/*
* linux/arch/arm/include/asm/hardware/coresight.h
*
* CoreSight components' registers
*
* Copyright (C) 2009 Nokia Corporation.
* Alexander Shishkin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_HARDWARE_CORESIGHT_H
#define __ASM_HARDWARE_CORESIGHT_H
#define TRACER_ACCESSED_BIT 0
#define TRACER_RUNNING_BIT 1
#define TRACER_CYCLE_ACC_BIT 2
#define TRACER_ACCESSED BIT(TRACER_ACCESSED_BIT)
#define TRACER_RUNNING BIT(TRACER_RUNNING_BIT)
#define TRACER_CYCLE_ACC BIT(TRACER_CYCLE_ACC_BIT)
#define TRACER_TIMEOUT 10000
#define etm_writel(t, v, x) \
(writel_relaxed((v), (t)->etm_regs + (x)))
#define etm_readl(t, x) (readl_relaxed((t)->etm_regs + (x)))
/* CoreSight Management Registers */
#define CSMR_LOCKACCESS 0xfb0
#define CSMR_LOCKSTATUS 0xfb4
#define CSMR_AUTHSTATUS 0xfb8
#define CSMR_DEVID 0xfc8
#define CSMR_DEVTYPE 0xfcc
/* CoreSight Component Registers */
#define CSCR_CLASS 0xff4
#define CS_LAR_KEY 0xc5acce55
/* ETM control register, "ETM Architecture", 3.3.1 */
#define ETMR_CTRL 0
#define ETMCTRL_POWERDOWN 1
#define ETMCTRL_PROGRAM (1 << 10)
#define ETMCTRL_PORTSEL (1 << 11)
#define ETMCTRL_DO_CONTEXTID (3 << 14)
#define ETMCTRL_PORTMASK1 (7 << 4)
#define ETMCTRL_PORTMASK2 (1 << 21)
#define ETMCTRL_PORTMASK (ETMCTRL_PORTMASK1 | ETMCTRL_PORTMASK2)
#define ETMCTRL_PORTSIZE(x) ((((x) & 7) << 4) | (!!((x) & 8)) << 21)
#define ETMCTRL_DO_CPRT (1 << 1)
#define ETMCTRL_DATAMASK (3 << 2)
#define ETMCTRL_DATA_DO_DATA (1 << 2)
#define ETMCTRL_DATA_DO_ADDR (1 << 3)
#define ETMCTRL_DATA_DO_BOTH (ETMCTRL_DATA_DO_DATA | ETMCTRL_DATA_DO_ADDR)
#define ETMCTRL_BRANCH_OUTPUT (1 << 8)
#define ETMCTRL_CYCLEACCURATE (1 << 12)
/* ETM configuration code register */
#define ETMR_CONFCODE (0x04)
/* ETM trace start/stop resource control register */
#define ETMR_TRACESSCTRL (0x18)
/* ETM trigger event register */
#define ETMR_TRIGEVT (0x08)
/* address access type register bits, "ETM architecture",
* table 3-27 */
/* - access type */
#define ETMAAT_IFETCH 0
#define ETMAAT_IEXEC 1
#define ETMAAT_IEXECPASS 2
#define ETMAAT_IEXECFAIL 3
#define ETMAAT_DLOADSTORE 4
#define ETMAAT_DLOAD 5
#define ETMAAT_DSTORE 6
/* - comparison access size */
#define ETMAAT_JAVA (0 << 3)
#define ETMAAT_THUMB (1 << 3)
#define ETMAAT_ARM (3 << 3)
/* - data value comparison control */
#define ETMAAT_NOVALCMP (0 << 5)
#define ETMAAT_VALMATCH (1 << 5)
#define ETMAAT_VALNOMATCH (3 << 5)
/* - exact match */
#define ETMAAT_EXACTMATCH (1 << 7)
/* - context id comparator control */
#define ETMAAT_IGNCONTEXTID (0 << 8)
#define ETMAAT_VALUE1 (1 << 8)
#define ETMAAT_VALUE2 (2 << 8)
#define ETMAAT_VALUE3 (3 << 8)
/* - security level control */
#define ETMAAT_IGNSECURITY (0 << 10)
#define ETMAAT_NSONLY (1 << 10)
#define ETMAAT_SONLY (2 << 10)
#define ETMR_COMP_VAL(x) (0x40 + (x) * 4)
#define ETMR_COMP_ACC_TYPE(x) (0x80 + (x) * 4)
/* ETM status register, "ETM Architecture", 3.3.2 */
#define ETMR_STATUS (0x10)
#define ETMST_OVERFLOW BIT(0)
#define ETMST_PROGBIT BIT(1)
#define ETMST_STARTSTOP BIT(2)
#define ETMST_TRIGGER BIT(3)
#define etm_progbit(t) (etm_readl((t), ETMR_STATUS) & ETMST_PROGBIT)
#define etm_started(t) (etm_readl((t), ETMR_STATUS) & ETMST_STARTSTOP)
#define etm_triggered(t) (etm_readl((t), ETMR_STATUS) & ETMST_TRIGGER)
#define ETMR_TRACEENCTRL2 0x1c
#define ETMR_TRACEENCTRL 0x24
#define ETMTE_INCLEXCL BIT(24)
#define ETMR_TRACEENEVT 0x20
#define ETMCTRL_OPTS (ETMCTRL_DO_CPRT | \
ETMCTRL_DATA_DO_ADDR | \
ETMCTRL_BRANCH_OUTPUT | \
ETMCTRL_DO_CONTEXTID)
/* ETM management registers, "ETM Architecture", 3.5.24 */
#define ETMMR_OSLAR 0x300
#define ETMMR_OSLSR 0x304
#define ETMMR_OSSRR 0x308
#define ETMMR_PDSR 0x314
/* ETB registers, "CoreSight Components TRM", 9.3 */
#define ETBR_DEPTH 0x04
#define ETBR_STATUS 0x0c
#define ETBR_READMEM 0x10
#define ETBR_READADDR 0x14
#define ETBR_WRITEADDR 0x18
#define ETBR_TRIGGERCOUNT 0x1c
#define ETBR_CTRL 0x20
#define ETBR_FORMATTERCTRL 0x304
#define ETBFF_ENFTC 1
#define ETBFF_ENFCONT BIT(1)
#define ETBFF_FONFLIN BIT(4)
#define ETBFF_MANUAL_FLUSH BIT(6)
#define ETBFF_TRIGIN BIT(8)
#define ETBFF_TRIGEVT BIT(9)
#define ETBFF_TRIGFL BIT(10)
#define etb_writel(t, v, x) \
(writel_relaxed((v), (t)->etb_regs + (x)))
#define etb_readl(t, x) (readl_relaxed((t)->etb_regs + (x)))
#define etm_lock(t) do { etm_writel((t), 0, CSMR_LOCKACCESS); } while (0)
#define etm_unlock(t) \
do { etm_writel((t), CS_LAR_KEY, CSMR_LOCKACCESS); } while (0)
#define etb_lock(t) do { etb_writel((t), 0, CSMR_LOCKACCESS); } while (0)
#define etb_unlock(t) \
do { etb_writel((t), CS_LAR_KEY, CSMR_LOCKACCESS); } while (0)
#endif /* __ASM_HARDWARE_CORESIGHT_H */

542
arch/arm/include/asm/hardware/cp14.h Normal file
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@ -0,0 +1,542 @@
/* Copyright (c) 2011-2012, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __ASM_HARDWARE_CP14_H
#define __ASM_HARDWARE_CP14_H
#include <linux/types.h>
/* Accessors for CP14 registers */
#define dbg_read(reg) RCP14_##reg()
#define dbg_write(val, reg) WCP14_##reg(val)
#define etm_read(reg) RCP14_##reg()
#define etm_write(val, reg) WCP14_##reg(val)
/* MRC14 and MCR14 */
#define MRC14(op1, crn, crm, op2) \
({ \
u32 val; \
asm volatile("mrc p14, "#op1", %0, "#crn", "#crm", "#op2 : "=r" (val)); \
val; \
})
#define MCR14(val, op1, crn, crm, op2) \
({ \
asm volatile("mcr p14, "#op1", %0, "#crn", "#crm", "#op2 : : "r" (val));\
})
/*
* Debug Registers
*
* Available only in DBGv7
* DBGECR, DBGDSCCR, DBGDSMCR, DBGDRCR
*
* Available only in DBGv7.1
* DBGBXVRm, DBGOSDLR, DBGDEVID2, DBGDEVID1
*
* Read only
* DBGDIDR, DBGDSCRint, DBGDTRRXint, DBGDRAR, DBGOSLSR, DBGOSSRR, DBGPRSR,
* DBGPRSR, DBGDSAR, DBGAUTHSTATUS, DBGDEVID2, DBGDEVID1, DBGDEVID
*
* Write only
* DBGDTRTXint, DBGOSLAR
*/
#define RCP14_DBGDIDR() MRC14(0, c0, c0, 0)
#define RCP14_DBGDSCRint() MRC14(0, c0, c1, 0)
#define RCP14_DBGDTRRXint() MRC14(0, c0, c5, 0)
#define RCP14_DBGWFAR() MRC14(0, c0, c6, 0)
#define RCP14_DBGVCR() MRC14(0, c0, c7, 0)
#define RCP14_DBGECR() MRC14(0, c0, c9, 0)
#define RCP14_DBGDSCCR() MRC14(0, c0, c10, 0)
#define RCP14_DBGDSMCR() MRC14(0, c0, c11, 0)
#define RCP14_DBGDTRRXext() MRC14(0, c0, c0, 2)
#define RCP14_DBGDSCRext() MRC14(0, c0, c2, 2)
#define RCP14_DBGDTRTXext() MRC14(0, c0, c3, 2)
#define RCP14_DBGDRCR() MRC14(0, c0, c4, 2)
#define RCP14_DBGBVR0() MRC14(0, c0, c0, 4)
#define RCP14_DBGBVR1() MRC14(0, c0, c1, 4)
#define RCP14_DBGBVR2() MRC14(0, c0, c2, 4)
#define RCP14_DBGBVR3() MRC14(0, c0, c3, 4)
#define RCP14_DBGBVR4() MRC14(0, c0, c4, 4)
#define RCP14_DBGBVR5() MRC14(0, c0, c5, 4)
#define RCP14_DBGBVR6() MRC14(0, c0, c6, 4)
#define RCP14_DBGBVR7() MRC14(0, c0, c7, 4)
#define RCP14_DBGBVR8() MRC14(0, c0, c8, 4)
#define RCP14_DBGBVR9() MRC14(0, c0, c9, 4)
#define RCP14_DBGBVR10() MRC14(0, c0, c10, 4)
#define RCP14_DBGBVR11() MRC14(0, c0, c11, 4)
#define RCP14_DBGBVR12() MRC14(0, c0, c12, 4)
#define RCP14_DBGBVR13() MRC14(0, c0, c13, 4)
#define RCP14_DBGBVR14() MRC14(0, c0, c14, 4)
#define RCP14_DBGBVR15() MRC14(0, c0, c15, 4)
#define RCP14_DBGBCR0() MRC14(0, c0, c0, 5)
#define RCP14_DBGBCR1() MRC14(0, c0, c1, 5)
#define RCP14_DBGBCR2() MRC14(0, c0, c2, 5)
#define RCP14_DBGBCR3() MRC14(0, c0, c3, 5)
#define RCP14_DBGBCR4() MRC14(0, c0, c4, 5)
#define RCP14_DBGBCR5() MRC14(0, c0, c5, 5)
#define RCP14_DBGBCR6() MRC14(0, c0, c6, 5)
#define RCP14_DBGBCR7() MRC14(0, c0, c7, 5)
#define RCP14_DBGBCR8() MRC14(0, c0, c8, 5)
#define RCP14_DBGBCR9() MRC14(0, c0, c9, 5)
#define RCP14_DBGBCR10() MRC14(0, c0, c10, 5)
#define RCP14_DBGBCR11() MRC14(0, c0, c11, 5)
#define RCP14_DBGBCR12() MRC14(0, c0, c12, 5)
#define RCP14_DBGBCR13() MRC14(0, c0, c13, 5)
#define RCP14_DBGBCR14() MRC14(0, c0, c14, 5)
#define RCP14_DBGBCR15() MRC14(0, c0, c15, 5)
#define RCP14_DBGWVR0() MRC14(0, c0, c0, 6)
#define RCP14_DBGWVR1() MRC14(0, c0, c1, 6)
#define RCP14_DBGWVR2() MRC14(0, c0, c2, 6)
#define RCP14_DBGWVR3() MRC14(0, c0, c3, 6)
#define RCP14_DBGWVR4() MRC14(0, c0, c4, 6)
#define RCP14_DBGWVR5() MRC14(0, c0, c5, 6)
#define RCP14_DBGWVR6() MRC14(0, c0, c6, 6)
#define RCP14_DBGWVR7() MRC14(0, c0, c7, 6)
#define RCP14_DBGWVR8() MRC14(0, c0, c8, 6)
#define RCP14_DBGWVR9() MRC14(0, c0, c9, 6)
#define RCP14_DBGWVR10() MRC14(0, c0, c10, 6)
#define RCP14_DBGWVR11() MRC14(0, c0, c11, 6)
#define RCP14_DBGWVR12() MRC14(0, c0, c12, 6)
#define RCP14_DBGWVR13() MRC14(0, c0, c13, 6)
#define RCP14_DBGWVR14() MRC14(0, c0, c14, 6)
#define RCP14_DBGWVR15() MRC14(0, c0, c15, 6)
#define RCP14_DBGWCR0() MRC14(0, c0, c0, 7)
#define RCP14_DBGWCR1() MRC14(0, c0, c1, 7)
#define RCP14_DBGWCR2() MRC14(0, c0, c2, 7)
#define RCP14_DBGWCR3() MRC14(0, c0, c3, 7)
#define RCP14_DBGWCR4() MRC14(0, c0, c4, 7)
#define RCP14_DBGWCR5() MRC14(0, c0, c5, 7)
#define RCP14_DBGWCR6() MRC14(0, c0, c6, 7)
#define RCP14_DBGWCR7() MRC14(0, c0, c7, 7)
#define RCP14_DBGWCR8() MRC14(0, c0, c8, 7)
#define RCP14_DBGWCR9() MRC14(0, c0, c9, 7)
#define RCP14_DBGWCR10() MRC14(0, c0, c10, 7)
#define RCP14_DBGWCR11() MRC14(0, c0, c11, 7)
#define RCP14_DBGWCR12() MRC14(0, c0, c12, 7)
#define RCP14_DBGWCR13() MRC14(0, c0, c13, 7)
#define RCP14_DBGWCR14() MRC14(0, c0, c14, 7)
#define RCP14_DBGWCR15() MRC14(0, c0, c15, 7)
#define RCP14_DBGDRAR() MRC14(0, c1, c0, 0)
#define RCP14_DBGBXVR0() MRC14(0, c1, c0, 1)
#define RCP14_DBGBXVR1() MRC14(0, c1, c1, 1)
#define RCP14_DBGBXVR2() MRC14(0, c1, c2, 1)
#define RCP14_DBGBXVR3() MRC14(0, c1, c3, 1)
#define RCP14_DBGBXVR4() MRC14(0, c1, c4, 1)
#define RCP14_DBGBXVR5() MRC14(0, c1, c5, 1)
#define RCP14_DBGBXVR6() MRC14(0, c1, c6, 1)
#define RCP14_DBGBXVR7() MRC14(0, c1, c7, 1)
#define RCP14_DBGBXVR8() MRC14(0, c1, c8, 1)
#define RCP14_DBGBXVR9() MRC14(0, c1, c9, 1)
#define RCP14_DBGBXVR10() MRC14(0, c1, c10, 1)
#define RCP14_DBGBXVR11() MRC14(0, c1, c11, 1)
#define RCP14_DBGBXVR12() MRC14(0, c1, c12, 1)
#define RCP14_DBGBXVR13() MRC14(0, c1, c13, 1)
#define RCP14_DBGBXVR14() MRC14(0, c1, c14, 1)
#define RCP14_DBGBXVR15() MRC14(0, c1, c15, 1)
#define RCP14_DBGOSLSR() MRC14(0, c1, c1, 4)
#define RCP14_DBGOSSRR() MRC14(0, c1, c2, 4)
#define RCP14_DBGOSDLR() MRC14(0, c1, c3, 4)
#define RCP14_DBGPRCR() MRC14(0, c1, c4, 4)
#define RCP14_DBGPRSR() MRC14(0, c1, c5, 4)
#define RCP14_DBGDSAR() MRC14(0, c2, c0, 0)
#define RCP14_DBGITCTRL() MRC14(0, c7, c0, 4)
#define RCP14_DBGCLAIMSET() MRC14(0, c7, c8, 6)
#define RCP14_DBGCLAIMCLR() MRC14(0, c7, c9, 6)
#define RCP14_DBGAUTHSTATUS() MRC14(0, c7, c14, 6)
#define RCP14_DBGDEVID2() MRC14(0, c7, c0, 7)
#define RCP14_DBGDEVID1() MRC14(0, c7, c1, 7)
#define RCP14_DBGDEVID() MRC14(0, c7, c2, 7)
#define WCP14_DBGDTRTXint(val) MCR14(val, 0, c0, c5, 0)
#define WCP14_DBGWFAR(val) MCR14(val, 0, c0, c6, 0)
#define WCP14_DBGVCR(val) MCR14(val, 0, c0, c7, 0)
#define WCP14_DBGECR(val) MCR14(val, 0, c0, c9, 0)
#define WCP14_DBGDSCCR(val) MCR14(val, 0, c0, c10, 0)
#define WCP14_DBGDSMCR(val) MCR14(val, 0, c0, c11, 0)
#define WCP14_DBGDTRRXext(val) MCR14(val, 0, c0, c0, 2)
#define WCP14_DBGDSCRext(val) MCR14(val, 0, c0, c2, 2)
#define WCP14_DBGDTRTXext(val) MCR14(val, 0, c0, c3, 2)
#define WCP14_DBGDRCR(val) MCR14(val, 0, c0, c4, 2)
#define WCP14_DBGBVR0(val) MCR14(val, 0, c0, c0, 4)
#define WCP14_DBGBVR1(val) MCR14(val, 0, c0, c1, 4)
#define WCP14_DBGBVR2(val) MCR14(val, 0, c0, c2, 4)
#define WCP14_DBGBVR3(val) MCR14(val, 0, c0, c3, 4)
#define WCP14_DBGBVR4(val) MCR14(val, 0, c0, c4, 4)
#define WCP14_DBGBVR5(val) MCR14(val, 0, c0, c5, 4)
#define WCP14_DBGBVR6(val) MCR14(val, 0, c0, c6, 4)
#define WCP14_DBGBVR7(val) MCR14(val, 0, c0, c7, 4)
#define WCP14_DBGBVR8(val) MCR14(val, 0, c0, c8, 4)
#define WCP14_DBGBVR9(val) MCR14(val, 0, c0, c9, 4)
#define WCP14_DBGBVR10(val) MCR14(val, 0, c0, c10, 4)
#define WCP14_DBGBVR11(val) MCR14(val, 0, c0, c11, 4)
#define WCP14_DBGBVR12(val) MCR14(val, 0, c0, c12, 4)
#define WCP14_DBGBVR13(val) MCR14(val, 0, c0, c13, 4)
#define WCP14_DBGBVR14(val) MCR14(val, 0, c0, c14, 4)
#define WCP14_DBGBVR15(val) MCR14(val, 0, c0, c15, 4)
#define WCP14_DBGBCR0(val) MCR14(val, 0, c0, c0, 5)
#define WCP14_DBGBCR1(val) MCR14(val, 0, c0, c1, 5)
#define WCP14_DBGBCR2(val) MCR14(val, 0, c0, c2, 5)
#define WCP14_DBGBCR3(val) MCR14(val, 0, c0, c3, 5)
#define WCP14_DBGBCR4(val) MCR14(val, 0, c0, c4, 5)
#define WCP14_DBGBCR5(val) MCR14(val, 0, c0, c5, 5)
#define WCP14_DBGBCR6(val) MCR14(val, 0, c0, c6, 5)
#define WCP14_DBGBCR7(val) MCR14(val, 0, c0, c7, 5)
#define WCP14_DBGBCR8(val) MCR14(val, 0, c0, c8, 5)
#define WCP14_DBGBCR9(val) MCR14(val, 0, c0, c9, 5)
#define WCP14_DBGBCR10(val) MCR14(val, 0, c0, c10, 5)
#define WCP14_DBGBCR11(val) MCR14(val, 0, c0, c11, 5)
#define WCP14_DBGBCR12(val) MCR14(val, 0, c0, c12, 5)
#define WCP14_DBGBCR13(val) MCR14(val, 0, c0, c13, 5)
#define WCP14_DBGBCR14(val) MCR14(val, 0, c0, c14, 5)
#define WCP14_DBGBCR15(val) MCR14(val, 0, c0, c15, 5)
#define WCP14_DBGWVR0(val) MCR14(val, 0, c0, c0, 6)
#define WCP14_DBGWVR1(val) MCR14(val, 0, c0, c1, 6)
#define WCP14_DBGWVR2(val) MCR14(val, 0, c0, c2, 6)
#define WCP14_DBGWVR3(val) MCR14(val, 0, c0, c3, 6)
#define WCP14_DBGWVR4(val) MCR14(val, 0, c0, c4, 6)
#define WCP14_DBGWVR5(val) MCR14(val, 0, c0, c5, 6)
#define WCP14_DBGWVR6(val) MCR14(val, 0, c0, c6, 6)
#define WCP14_DBGWVR7(val) MCR14(val, 0, c0, c7, 6)
#define WCP14_DBGWVR8(val) MCR14(val, 0, c0, c8, 6)
#define WCP14_DBGWVR9(val) MCR14(val, 0, c0, c9, 6)
#define WCP14_DBGWVR10(val) MCR14(val, 0, c0, c10, 6)
#define WCP14_DBGWVR11(val) MCR14(val, 0, c0, c11, 6)
#define WCP14_DBGWVR12(val) MCR14(val, 0, c0, c12, 6)
#define WCP14_DBGWVR13(val) MCR14(val, 0, c0, c13, 6)
#define WCP14_DBGWVR14(val) MCR14(val, 0, c0, c14, 6)
#define WCP14_DBGWVR15(val) MCR14(val, 0, c0, c15, 6)
#define WCP14_DBGWCR0(val) MCR14(val, 0, c0, c0, 7)
#define WCP14_DBGWCR1(val) MCR14(val, 0, c0, c1, 7)
#define WCP14_DBGWCR2(val) MCR14(val, 0, c0, c2, 7)
#define WCP14_DBGWCR3(val) MCR14(val, 0, c0, c3, 7)
#define WCP14_DBGWCR4(val) MCR14(val, 0, c0, c4, 7)
#define WCP14_DBGWCR5(val) MCR14(val, 0, c0, c5, 7)
#define WCP14_DBGWCR6(val) MCR14(val, 0, c0, c6, 7)
#define WCP14_DBGWCR7(val) MCR14(val, 0, c0, c7, 7)
#define WCP14_DBGWCR8(val) MCR14(val, 0, c0, c8, 7)
#define WCP14_DBGWCR9(val) MCR14(val, 0, c0, c9, 7)
#define WCP14_DBGWCR10(val) MCR14(val, 0, c0, c10, 7)
#define WCP14_DBGWCR11(val) MCR14(val, 0, c0, c11, 7)
#define WCP14_DBGWCR12(val) MCR14(val, 0, c0, c12, 7)
#define WCP14_DBGWCR13(val) MCR14(val, 0, c0, c13, 7)
#define WCP14_DBGWCR14(val) MCR14(val, 0, c0, c14, 7)
#define WCP14_DBGWCR15(val) MCR14(val, 0, c0, c15, 7)
#define WCP14_DBGBXVR0(val) MCR14(val, 0, c1, c0, 1)
#define WCP14_DBGBXVR1(val) MCR14(val, 0, c1, c1, 1)
#define WCP14_DBGBXVR2(val) MCR14(val, 0, c1, c2, 1)
#define WCP14_DBGBXVR3(val) MCR14(val, 0, c1, c3, 1)
#define WCP14_DBGBXVR4(val) MCR14(val, 0, c1, c4, 1)
#define WCP14_DBGBXVR5(val) MCR14(val, 0, c1, c5, 1)
#define WCP14_DBGBXVR6(val) MCR14(val, 0, c1, c6, 1)
#define WCP14_DBGBXVR7(val) MCR14(val, 0, c1, c7, 1)
#define WCP14_DBGBXVR8(val) MCR14(val, 0, c1, c8, 1)
#define WCP14_DBGBXVR9(val) MCR14(val, 0, c1, c9, 1)
#define WCP14_DBGBXVR10(val) MCR14(val, 0, c1, c10, 1)
#define WCP14_DBGBXVR11(val) MCR14(val, 0, c1, c11, 1)
#define WCP14_DBGBXVR12(val) MCR14(val, 0, c1, c12, 1)
#define WCP14_DBGBXVR13(val) MCR14(val, 0, c1, c13, 1)
#define WCP14_DBGBXVR14(val) MCR14(val, 0, c1, c14, 1)
#define WCP14_DBGBXVR15(val) MCR14(val, 0, c1, c15, 1)
#define WCP14_DBGOSLAR(val) MCR14(val, 0, c1, c0, 4)
#define WCP14_DBGOSSRR(val) MCR14(val, 0, c1, c2, 4)
#define WCP14_DBGOSDLR(val) MCR14(val, 0, c1, c3, 4)
#define WCP14_DBGPRCR(val) MCR14(val, 0, c1, c4, 4)
#define WCP14_DBGITCTRL(val) MCR14(val, 0, c7, c0, 4)
#define WCP14_DBGCLAIMSET(val) MCR14(val, 0, c7, c8, 6)
#define WCP14_DBGCLAIMCLR(val) MCR14(val, 0, c7, c9, 6)
/*
* ETM Registers
*
* Available only in ETMv3.3, 3.4, 3.5
* ETMASICCR, ETMTECR2, ETMFFRR, ETMVDEVR, ETMVDCR1, ETMVDCR2, ETMVDCR3,
* ETMDCVRn, ETMDCMRn
*
* Available only in ETMv3.5 as read only
* ETMIDR2
*
* Available only in ETMv3.5, PFTv1.0, 1.1
* ETMTSEVR, ETMVMIDCVR, ETMPDCR
*
* Read only
* ETMCCR, ETMSCR, ETMIDR, ETMCCER, ETMOSLSR
* ETMLSR, ETMAUTHSTATUS, ETMDEVID, ETMDEVTYPE, ETMPIDR4, ETMPIDR5, ETMPIDR6,
* ETMPIDR7, ETMPIDR0, ETMPIDR1, ETMPIDR2, ETMPIDR2, ETMPIDR3, ETMCIDR0,
* ETMCIDR1, ETMCIDR2, ETMCIDR3
*
* Write only
* ETMOSLAR, ETMLAR
* Note: ETMCCER[11] controls WO nature of certain regs. Refer ETM arch spec.
*/
#define RCP14_ETMCR() MRC14(1, c0, c0, 0)
#define RCP14_ETMCCR() MRC14(1, c0, c1, 0)
#define RCP14_ETMTRIGGER() MRC14(1, c0, c2, 0)
#define RCP14_ETMASICCR() MRC14(1, c0, c3, 0)
#define RCP14_ETMSR() MRC14(1, c0, c4, 0)
#define RCP14_ETMSCR() MRC14(1, c0, c5, 0)
#define RCP14_ETMTSSCR() MRC14(1, c0, c6, 0)
#define RCP14_ETMTECR2() MRC14(1, c0, c7, 0)
#define RCP14_ETMTEEVR() MRC14(1, c0, c8, 0)
#define RCP14_ETMTECR1() MRC14(1, c0, c9, 0)
#define RCP14_ETMFFRR() MRC14(1, c0, c10, 0)
#define RCP14_ETMFFLR() MRC14(1, c0, c11, 0)
#define RCP14_ETMVDEVR() MRC14(1, c0, c12, 0)
#define RCP14_ETMVDCR1() MRC14(1, c0, c13, 0)
#define RCP14_ETMVDCR2() MRC14(1, c0, c14, 0)
#define RCP14_ETMVDCR3() MRC14(1, c0, c15, 0)
#define RCP14_ETMACVR0() MRC14(1, c0, c0, 1)
#define RCP14_ETMACVR1() MRC14(1, c0, c1, 1)
#define RCP14_ETMACVR2() MRC14(1, c0, c2, 1)
#define RCP14_ETMACVR3() MRC14(1, c0, c3, 1)
#define RCP14_ETMACVR4() MRC14(1, c0, c4, 1)
#define RCP14_ETMACVR5() MRC14(1, c0, c5, 1)
#define RCP14_ETMACVR6() MRC14(1, c0, c6, 1)
#define RCP14_ETMACVR7() MRC14(1, c0, c7, 1)
#define RCP14_ETMACVR8() MRC14(1, c0, c8, 1)
#define RCP14_ETMACVR9() MRC14(1, c0, c9, 1)
#define RCP14_ETMACVR10() MRC14(1, c0, c10, 1)
#define RCP14_ETMACVR11() MRC14(1, c0, c11, 1)
#define RCP14_ETMACVR12() MRC14(1, c0, c12, 1)
#define RCP14_ETMACVR13() MRC14(1, c0, c13, 1)
#define RCP14_ETMACVR14() MRC14(1, c0, c14, 1)
#define RCP14_ETMACVR15() MRC14(1, c0, c15, 1)
#define RCP14_ETMACTR0() MRC14(1, c0, c0, 2)
#define RCP14_ETMACTR1() MRC14(1, c0, c1, 2)
#define RCP14_ETMACTR2() MRC14(1, c0, c2, 2)
#define RCP14_ETMACTR3() MRC14(1, c0, c3, 2)
#define RCP14_ETMACTR4() MRC14(1, c0, c4, 2)
#define RCP14_ETMACTR5() MRC14(1, c0, c5, 2)
#define RCP14_ETMACTR6() MRC14(1, c0, c6, 2)
#define RCP14_ETMACTR7() MRC14(1, c0, c7, 2)
#define RCP14_ETMACTR8() MRC14(1, c0, c8, 2)
#define RCP14_ETMACTR9() MRC14(1, c0, c9, 2)
#define RCP14_ETMACTR10() MRC14(1, c0, c10, 2)
#define RCP14_ETMACTR11() MRC14(1, c0, c11, 2)
#define RCP14_ETMACTR12() MRC14(1, c0, c12, 2)
#define RCP14_ETMACTR13() MRC14(1, c0, c13, 2)
#define RCP14_ETMACTR14() MRC14(1, c0, c14, 2)
#define RCP14_ETMACTR15() MRC14(1, c0, c15, 2)
#define RCP14_ETMDCVR0() MRC14(1, c0, c0, 3)
#define RCP14_ETMDCVR2() MRC14(1, c0, c2, 3)
#define RCP14_ETMDCVR4() MRC14(1, c0, c4, 3)
#define RCP14_ETMDCVR6() MRC14(1, c0, c6, 3)
#define RCP14_ETMDCVR8() MRC14(1, c0, c8, 3)
#define RCP14_ETMDCVR10() MRC14(1, c0, c10, 3)
#define RCP14_ETMDCVR12() MRC14(1, c0, c12, 3)
#define RCP14_ETMDCVR14() MRC14(1, c0, c14, 3)
#define RCP14_ETMDCMR0() MRC14(1, c0, c0, 4)
#define RCP14_ETMDCMR2() MRC14(1, c0, c2, 4)
#define RCP14_ETMDCMR4() MRC14(1, c0, c4, 4)
#define RCP14_ETMDCMR6() MRC14(1, c0, c6, 4)
#define RCP14_ETMDCMR8() MRC14(1, c0, c8, 4)
#define RCP14_ETMDCMR10() MRC14(1, c0, c10, 4)
#define RCP14_ETMDCMR12() MRC14(1, c0, c12, 4)
#define RCP14_ETMDCMR14() MRC14(1, c0, c14, 4)
#define RCP14_ETMCNTRLDVR0() MRC14(1, c0, c0, 5)
#define RCP14_ETMCNTRLDVR1() MRC14(1, c0, c1, 5)
#define RCP14_ETMCNTRLDVR2() MRC14(1, c0, c2, 5)
#define RCP14_ETMCNTRLDVR3() MRC14(1, c0, c3, 5)
#define RCP14_ETMCNTENR0() MRC14(1, c0, c4, 5)
#define RCP14_ETMCNTENR1() MRC14(1, c0, c5, 5)
#define RCP14_ETMCNTENR2() MRC14(1, c0, c6, 5)
#define RCP14_ETMCNTENR3() MRC14(1, c0, c7, 5)
#define RCP14_ETMCNTRLDEVR0() MRC14(1, c0, c8, 5)
#define RCP14_ETMCNTRLDEVR1() MRC14(1, c0, c9, 5)
#define RCP14_ETMCNTRLDEVR2() MRC14(1, c0, c10, 5)
#define RCP14_ETMCNTRLDEVR3() MRC14(1, c0, c11, 5)
#define RCP14_ETMCNTVR0() MRC14(1, c0, c12, 5)
#define RCP14_ETMCNTVR1() MRC14(1, c0, c13, 5)
#define RCP14_ETMCNTVR2() MRC14(1, c0, c14, 5)
#define RCP14_ETMCNTVR3() MRC14(1, c0, c15, 5)
#define RCP14_ETMSQ12EVR() MRC14(1, c0, c0, 6)
#define RCP14_ETMSQ21EVR() MRC14(1, c0, c1, 6)
#define RCP14_ETMSQ23EVR() MRC14(1, c0, c2, 6)
#define RCP14_ETMSQ31EVR() MRC14(1, c0, c3, 6)
#define RCP14_ETMSQ32EVR() MRC14(1, c0, c4, 6)
#define RCP14_ETMSQ13EVR() MRC14(1, c0, c5, 6)
#define RCP14_ETMSQR() MRC14(1, c0, c7, 6)
#define RCP14_ETMEXTOUTEVR0() MRC14(1, c0, c8, 6)
#define RCP14_ETMEXTOUTEVR1() MRC14(1, c0, c9, 6)
#define RCP14_ETMEXTOUTEVR2() MRC14(1, c0, c10, 6)
#define RCP14_ETMEXTOUTEVR3() MRC14(1, c0, c11, 6)
#define RCP14_ETMCIDCVR0() MRC14(1, c0, c12, 6)
#define RCP14_ETMCIDCVR1() MRC14(1, c0, c13, 6)
#define RCP14_ETMCIDCVR2() MRC14(1, c0, c14, 6)
#define RCP14_ETMCIDCMR() MRC14(1, c0, c15, 6)
#define RCP14_ETMIMPSPEC0() MRC14(1, c0, c0, 7)
#define RCP14_ETMIMPSPEC1() MRC14(1, c0, c1, 7)
#define RCP14_ETMIMPSPEC2() MRC14(1, c0, c2, 7)
#define RCP14_ETMIMPSPEC3() MRC14(1, c0, c3, 7)
#define RCP14_ETMIMPSPEC4() MRC14(1, c0, c4, 7)
#define RCP14_ETMIMPSPEC5() MRC14(1, c0, c5, 7)
#define RCP14_ETMIMPSPEC6() MRC14(1, c0, c6, 7)
#define RCP14_ETMIMPSPEC7() MRC14(1, c0, c7, 7)
#define RCP14_ETMSYNCFR() MRC14(1, c0, c8, 7)
#define RCP14_ETMIDR() MRC14(1, c0, c9, 7)
#define RCP14_ETMCCER() MRC14(1, c0, c10, 7)
#define RCP14_ETMEXTINSELR() MRC14(1, c0, c11, 7)
#define RCP14_ETMTESSEICR() MRC14(1, c0, c12, 7)
#define RCP14_ETMEIBCR() MRC14(1, c0, c13, 7)
#define RCP14_ETMTSEVR() MRC14(1, c0, c14, 7)
#define RCP14_ETMAUXCR() MRC14(1, c0, c15, 7)
#define RCP14_ETMTRACEIDR() MRC14(1, c1, c0, 0)
#define RCP14_ETMIDR2() MRC14(1, c1, c2, 0)
#define RCP14_ETMVMIDCVR() MRC14(1, c1, c0, 1)
#define RCP14_ETMOSLSR() MRC14(1, c1, c1, 4)
/* Not available in PFTv1.1 */
#define RCP14_ETMOSSRR() MRC14(1, c1, c2, 4)
#define RCP14_ETMPDCR() MRC14(1, c1, c4, 4)
#define RCP14_ETMPDSR() MRC14(1, c1, c5, 4)
#define RCP14_ETMITCTRL() MRC14(1, c7, c0, 4)
#define RCP14_ETMCLAIMSET() MRC14(1, c7, c8, 6)
#define RCP14_ETMCLAIMCLR() MRC14(1, c7, c9, 6)
#define RCP14_ETMLSR() MRC14(1, c7, c13, 6)
#define RCP14_ETMAUTHSTATUS() MRC14(1, c7, c14, 6)
#define RCP14_ETMDEVID() MRC14(1, c7, c2, 7)
#define RCP14_ETMDEVTYPE() MRC14(1, c7, c3, 7)
#define RCP14_ETMPIDR4() MRC14(1, c7, c4, 7)
#define RCP14_ETMPIDR5() MRC14(1, c7, c5, 7)
#define RCP14_ETMPIDR6() MRC14(1, c7, c6, 7)
#define RCP14_ETMPIDR7() MRC14(1, c7, c7, 7)
#define RCP14_ETMPIDR0() MRC14(1, c7, c8, 7)
#define RCP14_ETMPIDR1() MRC14(1, c7, c9, 7)
#define RCP14_ETMPIDR2() MRC14(1, c7, c10, 7)
#define RCP14_ETMPIDR3() MRC14(1, c7, c11, 7)
#define RCP14_ETMCIDR0() MRC14(1, c7, c12, 7)
#define RCP14_ETMCIDR1() MRC14(1, c7, c13, 7)
#define RCP14_ETMCIDR2() MRC14(1, c7, c14, 7)
#define RCP14_ETMCIDR3() MRC14(1, c7, c15, 7)
#define WCP14_ETMCR(val) MCR14(val, 1, c0, c0, 0)
#define WCP14_ETMTRIGGER(val) MCR14(val, 1, c0, c2, 0)
#define WCP14_ETMASICCR(val) MCR14(val, 1, c0, c3, 0)
#define WCP14_ETMSR(val) MCR14(val, 1, c0, c4, 0)
#define WCP14_ETMTSSCR(val) MCR14(val, 1, c0, c6, 0)
#define WCP14_ETMTECR2(val) MCR14(val, 1, c0, c7, 0)
#define WCP14_ETMTEEVR(val) MCR14(val, 1, c0, c8, 0)
#define WCP14_ETMTECR1(val) MCR14(val, 1, c0, c9, 0)
#define WCP14_ETMFFRR(val) MCR14(val, 1, c0, c10, 0)
#define WCP14_ETMFFLR(val) MCR14(val, 1, c0, c11, 0)
#define WCP14_ETMVDEVR(val) MCR14(val, 1, c0, c12, 0)
#define WCP14_ETMVDCR1(val) MCR14(val, 1, c0, c13, 0)
#define WCP14_ETMVDCR2(val) MCR14(val, 1, c0, c14, 0)
#define WCP14_ETMVDCR3(val) MCR14(val, 1, c0, c15, 0)
#define WCP14_ETMACVR0(val) MCR14(val, 1, c0, c0, 1)
#define WCP14_ETMACVR1(val) MCR14(val, 1, c0, c1, 1)
#define WCP14_ETMACVR2(val) MCR14(val, 1, c0, c2, 1)
#define WCP14_ETMACVR3(val) MCR14(val, 1, c0, c3, 1)
#define WCP14_ETMACVR4(val) MCR14(val, 1, c0, c4, 1)
#define WCP14_ETMACVR5(val) MCR14(val, 1, c0, c5, 1)
#define WCP14_ETMACVR6(val) MCR14(val, 1, c0, c6, 1)
#define WCP14_ETMACVR7(val) MCR14(val, 1, c0, c7, 1)
#define WCP14_ETMACVR8(val) MCR14(val, 1, c0, c8, 1)
#define WCP14_ETMACVR9(val) MCR14(val, 1, c0, c9, 1)
#define WCP14_ETMACVR10(val) MCR14(val, 1, c0, c10, 1)
#define WCP14_ETMACVR11(val) MCR14(val, 1, c0, c11, 1)
#define WCP14_ETMACVR12(val) MCR14(val, 1, c0, c12, 1)
#define WCP14_ETMACVR13(val) MCR14(val, 1, c0, c13, 1)
#define WCP14_ETMACVR14(val) MCR14(val, 1, c0, c14, 1)
#define WCP14_ETMACVR15(val) MCR14(val, 1, c0, c15, 1)
#define WCP14_ETMACTR0(val) MCR14(val, 1, c0, c0, 2)
#define WCP14_ETMACTR1(val) MCR14(val, 1, c0, c1, 2)
#define WCP14_ETMACTR2(val) MCR14(val, 1, c0, c2, 2)
#define WCP14_ETMACTR3(val) MCR14(val, 1, c0, c3, 2)
#define WCP14_ETMACTR4(val) MCR14(val, 1, c0, c4, 2)
#define WCP14_ETMACTR5(val) MCR14(val, 1, c0, c5, 2)
#define WCP14_ETMACTR6(val) MCR14(val, 1, c0, c6, 2)
#define WCP14_ETMACTR7(val) MCR14(val, 1, c0, c7, 2)
#define WCP14_ETMACTR8(val) MCR14(val, 1, c0, c8, 2)
#define WCP14_ETMACTR9(val) MCR14(val, 1, c0, c9, 2)
#define WCP14_ETMACTR10(val) MCR14(val, 1, c0, c10, 2)
#define WCP14_ETMACTR11(val) MCR14(val, 1, c0, c11, 2)
#define WCP14_ETMACTR12(val) MCR14(val, 1, c0, c12, 2)
#define WCP14_ETMACTR13(val) MCR14(val, 1, c0, c13, 2)
#define WCP14_ETMACTR14(val) MCR14(val, 1, c0, c14, 2)
#define WCP14_ETMACTR15(val) MCR14(val, 1, c0, c15, 2)
#define WCP14_ETMDCVR0(val) MCR14(val, 1, c0, c0, 3)
#define WCP14_ETMDCVR2(val) MCR14(val, 1, c0, c2, 3)
#define WCP14_ETMDCVR4(val) MCR14(val, 1, c0, c4, 3)
#define WCP14_ETMDCVR6(val) MCR14(val, 1, c0, c6, 3)
#define WCP14_ETMDCVR8(val) MCR14(val, 1, c0, c8, 3)
#define WCP14_ETMDCVR10(val) MCR14(val, 1, c0, c10, 3)
#define WCP14_ETMDCVR12(val) MCR14(val, 1, c0, c12, 3)
#define WCP14_ETMDCVR14(val) MCR14(val, 1, c0, c14, 3)
#define WCP14_ETMDCMR0(val) MCR14(val, 1, c0, c0, 4)
#define WCP14_ETMDCMR2(val) MCR14(val, 1, c0, c2, 4)
#define WCP14_ETMDCMR4(val) MCR14(val, 1, c0, c4, 4)
#define WCP14_ETMDCMR6(val) MCR14(val, 1, c0, c6, 4)
#define WCP14_ETMDCMR8(val) MCR14(val, 1, c0, c8, 4)
#define WCP14_ETMDCMR10(val) MCR14(val, 1, c0, c10, 4)
#define WCP14_ETMDCMR12(val) MCR14(val, 1, c0, c12, 4)
#define WCP14_ETMDCMR14(val) MCR14(val, 1, c0, c14, 4)
#define WCP14_ETMCNTRLDVR0(val) MCR14(val, 1, c0, c0, 5)
#define WCP14_ETMCNTRLDVR1(val) MCR14(val, 1, c0, c1, 5)
#define WCP14_ETMCNTRLDVR2(val) MCR14(val, 1, c0, c2, 5)
#define WCP14_ETMCNTRLDVR3(val) MCR14(val, 1, c0, c3, 5)
#define WCP14_ETMCNTENR0(val) MCR14(val, 1, c0, c4, 5)
#define WCP14_ETMCNTENR1(val) MCR14(val, 1, c0, c5, 5)
#define WCP14_ETMCNTENR2(val) MCR14(val, 1, c0, c6, 5)
#define WCP14_ETMCNTENR3(val) MCR14(val, 1, c0, c7, 5)
#define WCP14_ETMCNTRLDEVR0(val) MCR14(val, 1, c0, c8, 5)
#define WCP14_ETMCNTRLDEVR1(val) MCR14(val, 1, c0, c9, 5)
#define WCP14_ETMCNTRLDEVR2(val) MCR14(val, 1, c0, c10, 5)
#define WCP14_ETMCNTRLDEVR3(val) MCR14(val, 1, c0, c11, 5)
#define WCP14_ETMCNTVR0(val) MCR14(val, 1, c0, c12, 5)
#define WCP14_ETMCNTVR1(val) MCR14(val, 1, c0, c13, 5)
#define WCP14_ETMCNTVR2(val) MCR14(val, 1, c0, c14, 5)
#define WCP14_ETMCNTVR3(val) MCR14(val, 1, c0, c15, 5)
#define WCP14_ETMSQ12EVR(val) MCR14(val, 1, c0, c0, 6)
#define WCP14_ETMSQ21EVR(val) MCR14(val, 1, c0, c1, 6)
#define WCP14_ETMSQ23EVR(val) MCR14(val, 1, c0, c2, 6)
#define WCP14_ETMSQ31EVR(val) MCR14(val, 1, c0, c3, 6)
#define WCP14_ETMSQ32EVR(val) MCR14(val, 1, c0, c4, 6)
#define WCP14_ETMSQ13EVR(val) MCR14(val, 1, c0, c5, 6)
#define WCP14_ETMSQR(val) MCR14(val, 1, c0, c7, 6)
#define WCP14_ETMEXTOUTEVR0(val) MCR14(val, 1, c0, c8, 6)
#define WCP14_ETMEXTOUTEVR1(val) MCR14(val, 1, c0, c9, 6)
#define WCP14_ETMEXTOUTEVR2(val) MCR14(val, 1, c0, c10, 6)
#define WCP14_ETMEXTOUTEVR3(val) MCR14(val, 1, c0, c11, 6)
#define WCP14_ETMCIDCVR0(val) MCR14(val, 1, c0, c12, 6)
#define WCP14_ETMCIDCVR1(val) MCR14(val, 1, c0, c13, 6)
#define WCP14_ETMCIDCVR2(val) MCR14(val, 1, c0, c14, 6)
#define WCP14_ETMCIDCMR(val) MCR14(val, 1, c0, c15, 6)
#define WCP14_ETMIMPSPEC0(val) MCR14(val, 1, c0, c0, 7)
#define WCP14_ETMIMPSPEC1(val) MCR14(val, 1, c0, c1, 7)
#define WCP14_ETMIMPSPEC2(val) MCR14(val, 1, c0, c2, 7)
#define WCP14_ETMIMPSPEC3(val) MCR14(val, 1, c0, c3, 7)
#define WCP14_ETMIMPSPEC4(val) MCR14(val, 1, c0, c4, 7)
#define WCP14_ETMIMPSPEC5(val) MCR14(val, 1, c0, c5, 7)
#define WCP14_ETMIMPSPEC6(val) MCR14(val, 1, c0, c6, 7)
#define WCP14_ETMIMPSPEC7(val) MCR14(val, 1, c0, c7, 7)
/* Can be read only in ETMv3.4, ETMv3.5 */
#define WCP14_ETMSYNCFR(val) MCR14(val, 1, c0, c8, 7)
#define WCP14_ETMEXTINSELR(val) MCR14(val, 1, c0, c11, 7)
#define WCP14_ETMTESSEICR(val) MCR14(val, 1, c0, c12, 7)
#define WCP14_ETMEIBCR(val) MCR14(val, 1, c0, c13, 7)
#define WCP14_ETMTSEVR(val) MCR14(val, 1, c0, c14, 7)
#define WCP14_ETMAUXCR(val) MCR14(val, 1, c0, c15, 7)
#define WCP14_ETMTRACEIDR(val) MCR14(val, 1, c1, c0, 0)
#define WCP14_ETMIDR2(val) MCR14(val, 1, c1, c2, 0)
#define WCP14_ETMVMIDCVR(val) MCR14(val, 1, c1, c0, 1)
#define WCP14_ETMOSLAR(val) MCR14(val, 1, c1, c0, 4)
/* Not available in PFTv1.1 */
#define WCP14_ETMOSSRR(val) MCR14(val, 1, c1, c2, 4)
#define WCP14_ETMPDCR(val) MCR14(val, 1, c1, c4, 4)
#define WCP14_ETMPDSR(val) MCR14(val, 1, c1, c5, 4)
#define WCP14_ETMITCTRL(val) MCR14(val, 1, c7, c0, 4)
#define WCP14_ETMCLAIMSET(val) MCR14(val, 1, c7, c8, 6)
#define WCP14_ETMCLAIMCLR(val) MCR14(val, 1, c7, c9, 6)
/* Writes to this from CP14 interface are ignored */
#define WCP14_ETMLAR(val) MCR14(val, 1, c7, c12, 6)
#endif

1
arch/arm/kernel/Makefile
View file

@ -30,7 +30,6 @@ else
obj-y += entry-armv.o
endif
obj-$(CONFIG_OC_ETM) += etm.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_ISA_DMA_API) += dma.o
obj-$(CONFIG_FIQ) += fiq.o fiqasm.o

654
arch/arm/kernel/etm.c
View file

@ -1,654 +0,0 @@
/*
* linux/arch/arm/kernel/etm.c
*
* Driver for ARM's Embedded Trace Macrocell and Embedded Trace Buffer.
*
* Copyright (C) 2009 Nokia Corporation.
* Alexander Shishkin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/io.h>
#include <linux/sysrq.h>
#include <linux/device.h>
#include <linux/clk.h>
#include <linux/amba/bus.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/miscdevice.h>
#include <linux/vmalloc.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <asm/hardware/coresight.h>
#include <asm/sections.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alexander Shishkin");
/*
* ETM tracer state
*/
struct tracectx {
unsigned int etb_bufsz;
void __iomem *etb_regs;
void __iomem *etm_regs;
unsigned long flags;
int ncmppairs;
int etm_portsz;
struct device *dev;
struct clk *emu_clk;
struct mutex mutex;
};
static struct tracectx tracer;
static inline bool trace_isrunning(struct tracectx *t)
{
return !!(t->flags & TRACER_RUNNING);
}
static int etm_setup_address_range(struct tracectx *t, int n,
unsigned long start, unsigned long end, int exclude, int data)
{
u32 flags = ETMAAT_ARM | ETMAAT_IGNCONTEXTID | ETMAAT_NSONLY | \
ETMAAT_NOVALCMP;
if (n < 1 || n > t->ncmppairs)
return -EINVAL;
/* comparators and ranges are numbered starting with 1 as opposed
* to bits in a word */
n--;
if (data)
flags |= ETMAAT_DLOADSTORE;
else
flags |= ETMAAT_IEXEC;
/* first comparator for the range */
etm_writel(t, flags, ETMR_COMP_ACC_TYPE(n * 2));
etm_writel(t, start, ETMR_COMP_VAL(n * 2));
/* second comparator is right next to it */
etm_writel(t, flags, ETMR_COMP_ACC_TYPE(n * 2 + 1));
etm_writel(t, end, ETMR_COMP_VAL(n * 2 + 1));
flags = exclude ? ETMTE_INCLEXCL : 0;
etm_writel(t, flags | (1 << n), ETMR_TRACEENCTRL);
return 0;
}
static int trace_start(struct tracectx *t)
{
u32 v;
unsigned long timeout = TRACER_TIMEOUT;
etb_unlock(t);
etb_writel(t, 0, ETBR_FORMATTERCTRL);
etb_writel(t, 1, ETBR_CTRL);
etb_lock(t);
/* configure etm */
v = ETMCTRL_OPTS | ETMCTRL_PROGRAM | ETMCTRL_PORTSIZE(t->etm_portsz);
if (t->flags & TRACER_CYCLE_ACC)
v |= ETMCTRL_CYCLEACCURATE;
etm_unlock(t);
etm_writel(t, v, ETMR_CTRL);
while (!(etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM) && --timeout)
;
if (!timeout) {
dev_dbg(t->dev, "Waiting for progbit to assert timed out\n");
etm_lock(t);
return -EFAULT;
}
etm_setup_address_range(t, 1, (unsigned long)_stext,
(unsigned long)_etext, 0, 0);
etm_writel(t, 0, ETMR_TRACEENCTRL2);
etm_writel(t, 0, ETMR_TRACESSCTRL);
etm_writel(t, 0x6f, ETMR_TRACEENEVT);
v &= ~ETMCTRL_PROGRAM;
v |= ETMCTRL_PORTSEL;
etm_writel(t, v, ETMR_CTRL);
timeout = TRACER_TIMEOUT;
while (etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM && --timeout)
;
if (!timeout) {
dev_dbg(t->dev, "Waiting for progbit to deassert timed out\n");
etm_lock(t);
return -EFAULT;
}
etm_lock(t);
t->flags |= TRACER_RUNNING;
return 0;
}
static int trace_stop(struct tracectx *t)
{
unsigned long timeout = TRACER_TIMEOUT;
etm_unlock(t);
etm_writel(t, 0x440, ETMR_CTRL);
while (!(etm_readl(t, ETMR_CTRL) & ETMCTRL_PROGRAM) && --timeout)
;
if (!timeout) {
dev_dbg(t->dev, "Waiting for progbit to assert timed out\n");
etm_lock(t);
return -EFAULT;
}
etm_lock(t);
etb_unlock(t);
etb_writel(t, ETBFF_MANUAL_FLUSH, ETBR_FORMATTERCTRL);
timeout = TRACER_TIMEOUT;
while (etb_readl(t, ETBR_FORMATTERCTRL) &
ETBFF_MANUAL_FLUSH && --timeout)
;
if (!timeout) {
dev_dbg(t->dev, "Waiting for formatter flush to commence "
"timed out\n");
etb_lock(t);
return -EFAULT;
}
etb_writel(t, 0, ETBR_CTRL);
etb_lock(t);
t->flags &= ~TRACER_RUNNING;
return 0;
}
static int etb_getdatalen(struct tracectx *t)
{
u32 v;
int rp, wp;
v = etb_readl(t, ETBR_STATUS);
if (v & 1)
return t->etb_bufsz;
rp = etb_readl(t, ETBR_READADDR);
wp = etb_readl(t, ETBR_WRITEADDR);
if (rp > wp) {
etb_writel(t, 0, ETBR_READADDR);
etb_writel(t, 0, ETBR_WRITEADDR);
return 0;
}
return wp - rp;
}
/* sysrq+v will always stop the running trace and leave it at that */
static void etm_dump(void)
{
struct tracectx *t = &tracer;
u32 first = 0;
int length;
if (!t->etb_regs) {
pr_info("No tracing hardware found\n");
return;
}
if (trace_isrunning(t))
trace_stop(t);
etb_unlock(t);
length = etb_getdatalen(t);
if (length == t->etb_bufsz)
first = etb_readl(t, ETBR_WRITEADDR);
etb_writel(t, first, ETBR_READADDR);
pr_info("Trace buffer contents length: %d\n", length);
pr_info("--- ETB buffer begin ---\n");
for (; length; length--)
printk("%08x", cpu_to_be32(etb_readl(t, ETBR_READMEM)));
pr_info("\n--- ETB buffer end ---\n");
/* deassert the overflow bit */
etb_writel(t, 1, ETBR_CTRL);
etb_writel(t, 0, ETBR_CTRL);
etb_writel(t, 0, ETBR_TRIGGERCOUNT);
etb_writel(t, 0, ETBR_READADDR);
etb_writel(t, 0, ETBR_WRITEADDR);
etb_lock(t);
}
static void sysrq_etm_dump(int key)
{
dev_dbg(tracer.dev, "Dumping ETB buffer\n");
etm_dump();
}
static struct sysrq_key_op sysrq_etm_op = {
.handler = sysrq_etm_dump,
.help_msg = "etm-buffer-dump(v)",
.action_msg = "etm",
};
static int etb_open(struct inode *inode, struct file *file)
{
if (!tracer.etb_regs)
return -ENODEV;
file->private_data = &tracer;
return nonseekable_open(inode, file);
}
static ssize_t etb_read(struct file *file, char __user *data,
size_t len, loff_t *ppos)
{
int total, i;
long length;
struct tracectx *t = file->private_data;
u32 first = 0;
u32 *buf;
mutex_lock(&t->mutex);
if (trace_isrunning(t)) {
length = 0;
goto out;
}
etb_unlock(t);
total = etb_getdatalen(t);
if (total == t->etb_bufsz)
first = etb_readl(t, ETBR_WRITEADDR);
etb_writel(t, first, ETBR_READADDR);
length = min(total * 4, (int)len);
buf = vmalloc(length);
dev_dbg(t->dev, "ETB buffer length: %d\n", total);
dev_dbg(t->dev, "ETB status reg: %x\n", etb_readl(t, ETBR_STATUS));
for (i = 0; i < length / 4; i++)
buf[i] = etb_readl(t, ETBR_READMEM);
/* the only way to deassert overflow bit in ETB status is this */
etb_writel(t, 1, ETBR_CTRL);
etb_writel(t, 0, ETBR_CTRL);
etb_writel(t, 0, ETBR_WRITEADDR);
etb_writel(t, 0, ETBR_READADDR);
etb_writel(t, 0, ETBR_TRIGGERCOUNT);
etb_lock(t);
length -= copy_to_user(data, buf, length);
vfree(buf);
out:
mutex_unlock(&t->mutex);
return length;
}
static int etb_release(struct inode *inode, struct file *file)
{
/* there's nothing to do here, actually */
return 0;
}
static const struct file_operations etb_fops = {
.owner = THIS_MODULE,
.read = etb_read,
.open = etb_open,
.release = etb_release,
.llseek = no_llseek,
};
static struct miscdevice etb_miscdev = {
.name = "tracebuf",
.minor = 0,
.fops = &etb_fops,
};
static int etb_probe(struct amba_device *dev, const struct amba_id *id)
{
struct tracectx *t = &tracer;
int ret = 0;
ret = amba_request_regions(dev, NULL);
if (ret)
goto out;
t->etb_regs = ioremap_nocache(dev->res.start, resource_size(&dev->res));
if (!t->etb_regs) {
ret = -ENOMEM;
goto out_release;
}
amba_set_drvdata(dev, t);
etb_miscdev.parent = &dev->dev;
ret = misc_register(&etb_miscdev);
if (ret)
goto out_unmap;
t->emu_clk = clk_get(&dev->dev, "emu_src_ck");
if (IS_ERR(t->emu_clk)) {
dev_dbg(&dev->dev, "Failed to obtain emu_src_ck.\n");
return -EFAULT;
}
clk_enable(t->emu_clk);
etb_unlock(t);
t->etb_bufsz = etb_readl(t, ETBR_DEPTH);
dev_dbg(&dev->dev, "Size: %x\n", t->etb_bufsz);
/* make sure trace capture is disabled */
etb_writel(t, 0, ETBR_CTRL);
etb_writel(t, 0x1000, ETBR_FORMATTERCTRL);
etb_lock(t);
dev_dbg(&dev->dev, "ETB AMBA driver initialized.\n");
out:
return ret;
out_unmap:
iounmap(t->etb_regs);
out_release:
amba_release_regions(dev);
return ret;
}
static int etb_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
iounmap(t->etb_regs);
t->etb_regs = NULL;
clk_disable(t->emu_clk);
clk_put(t->emu_clk);
amba_release_regions(dev);
return 0;
}
static struct amba_id etb_ids[] = {
{
.id = 0x0003b907,
.mask = 0x0007ffff,
},
{ 0, 0 },
};
static struct amba_driver etb_driver = {
.drv = {
.name = "etb",
.owner = THIS_MODULE,
},
.probe = etb_probe,
.remove = etb_remove,
.id_table = etb_ids,
};
/* use a sysfs file "trace_running" to start/stop tracing */
static ssize_t trace_running_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
return sprintf(buf, "%x\n", trace_isrunning(&tracer));
}
static ssize_t trace_running_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t n)
{
unsigned int value;
int ret;
if (sscanf(buf, "%u", &value) != 1)
return -EINVAL;
mutex_lock(&tracer.mutex);
ret = value ? trace_start(&tracer) : trace_stop(&tracer);
mutex_unlock(&tracer.mutex);
return ret ? : n;
}
static struct kobj_attribute trace_running_attr =
__ATTR(trace_running, 0644, trace_running_show, trace_running_store);
static ssize_t trace_info_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
u32 etb_wa, etb_ra, etb_st, etb_fc, etm_ctrl, etm_st;
int datalen;
etb_unlock(&tracer);
datalen = etb_getdatalen(&tracer);
etb_wa = etb_readl(&tracer, ETBR_WRITEADDR);
etb_ra = etb_readl(&tracer, ETBR_READADDR);
etb_st = etb_readl(&tracer, ETBR_STATUS);
etb_fc = etb_readl(&tracer, ETBR_FORMATTERCTRL);
etb_lock(&tracer);
etm_unlock(&tracer);
etm_ctrl = etm_readl(&tracer, ETMR_CTRL);
etm_st = etm_readl(&tracer, ETMR_STATUS);
etm_lock(&tracer);
return sprintf(buf, "Trace buffer len: %d\nComparator pairs: %d\n"
"ETBR_WRITEADDR:\t%08x\n"
"ETBR_READADDR:\t%08x\n"
"ETBR_STATUS:\t%08x\n"
"ETBR_FORMATTERCTRL:\t%08x\n"
"ETMR_CTRL:\t%08x\n"
"ETMR_STATUS:\t%08x\n",
datalen,
tracer.ncmppairs,
etb_wa,
etb_ra,
etb_st,
etb_fc,
etm_ctrl,
etm_st
);
}
static struct kobj_attribute trace_info_attr =
__ATTR(trace_info, 0444, trace_info_show, NULL);
static ssize_t trace_mode_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
return sprintf(buf, "%d %d\n",
!!(tracer.flags & TRACER_CYCLE_ACC),
tracer.etm_portsz);
}
static ssize_t trace_mode_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t n)
{
unsigned int cycacc, portsz;
if (sscanf(buf, "%u %u", &cycacc, &portsz) != 2)
return -EINVAL;
mutex_lock(&tracer.mutex);
if (cycacc)
tracer.flags |= TRACER_CYCLE_ACC;
else
tracer.flags &= ~TRACER_CYCLE_ACC;
tracer.etm_portsz = portsz & 0x0f;
mutex_unlock(&tracer.mutex);
return n;
}
static struct kobj_attribute trace_mode_attr =
__ATTR(trace_mode, 0644, trace_mode_show, trace_mode_store);
static int etm_probe(struct amba_device *dev, const struct amba_id *id)
{
struct tracectx *t = &tracer;
int ret = 0;
if (t->etm_regs) {
dev_dbg(&dev->dev, "ETM already initialized\n");
ret = -EBUSY;
goto out;
}
ret = amba_request_regions(dev, NULL);
if (ret)
goto out;
t->etm_regs = ioremap_nocache(dev->res.start, resource_size(&dev->res));
if (!t->etm_regs) {
ret = -ENOMEM;
goto out_release;
}
amba_set_drvdata(dev, t);
mutex_init(&t->mutex);
t->dev = &dev->dev;
t->flags = TRACER_CYCLE_ACC;
t->etm_portsz = 1;
etm_unlock(t);
(void)etm_readl(t, ETMMR_PDSR);
/* dummy first read */
(void)etm_readl(&tracer, ETMMR_OSSRR);
t->ncmppairs = etm_readl(t, ETMR_CONFCODE) & 0xf;
etm_writel(t, 0x440, ETMR_CTRL);
etm_lock(t);
ret = sysfs_create_file(&dev->dev.kobj,
&trace_running_attr.attr);
if (ret)
goto out_unmap;
/* failing to create any of these two is not fatal */
ret = sysfs_create_file(&dev->dev.kobj, &trace_info_attr.attr);
if (ret)
dev_dbg(&dev->dev, "Failed to create trace_info in sysfs\n");
ret = sysfs_create_file(&dev->dev.kobj, &trace_mode_attr.attr);
if (ret)
dev_dbg(&dev->dev, "Failed to create trace_mode in sysfs\n");
dev_dbg(t->dev, "ETM AMBA driver initialized.\n");
out:
return ret;
out_unmap:
iounmap(t->etm_regs);
out_release:
amba_release_regions(dev);
return ret;
}
static int etm_remove(struct amba_device *dev)
{
struct tracectx *t = amba_get_drvdata(dev);
iounmap(t->etm_regs);
t->etm_regs = NULL;
amba_release_regions(dev);
sysfs_remove_file(&dev->dev.kobj, &trace_running_attr.attr);
sysfs_remove_file(&dev->dev.kobj, &trace_info_attr.attr);
sysfs_remove_file(&dev->dev.kobj, &trace_mode_attr.attr);
return 0;
}
static struct amba_id etm_ids[] = {
{
.id = 0x0003b921,
.mask = 0x0007ffff,
},
{ 0, 0 },
};
static struct amba_driver etm_driver = {
.drv = {
.name = "etm",
.owner = THIS_MODULE,
},
.probe = etm_probe,
.remove = etm_remove,
.id_table = etm_ids,
};
static int __init etm_init(void)
{
int retval;
retval = amba_driver_register(&etb_driver);
if (retval) {
pr_err("Failed to register etb\n");
return retval;
}
retval = amba_driver_register(&etm_driver);
if (retval) {
amba_driver_unregister(&etb_driver);
pr_err("Failed to probe etm\n");
return retval;
}
/* not being able to install this handler is not fatal */
(void)register_sysrq_key('v', &sysrq_etm_op);
return 0;
}
device_initcall(etm_init);

4
arch/arm/kernel/hw_breakpoint.c
View file

@ -29,6 +29,7 @@
#include <linux/hw_breakpoint.h>
#include <linux/smp.h>
#include <linux/cpu_pm.h>
#include <linux/coresight.h>
#include <asm/cacheflush.h>
#include <asm/cputype.h>
@ -36,7 +37,6 @@
#include <asm/hw_breakpoint.h>
#include <asm/kdebug.h>
#include <asm/traps.h>
#include <asm/hardware/coresight.h>
/* Breakpoint currently in use for each BRP. */
static DEFINE_PER_CPU(struct perf_event *, bp_on_reg[ARM_MAX_BRP]);
@ -976,7 +976,7 @@ static void reset_ctrl_regs(void *unused)
* Unconditionally clear the OS lock by writing a value
* other than CS_LAR_KEY to the access register.
*/
ARM_DBG_WRITE(c1, c0, 4, ~CS_LAR_KEY);
ARM_DBG_WRITE(c1, c0, 4, ~CORESIGHT_UNLOCK);
isb();
/*

8
arch/arm/mach-omap2/Kconfig
View file

@ -278,14 +278,6 @@ config MACH_SBC3530
default y
select OMAP_PACKAGE_CUS
config OMAP3_EMU
bool "OMAP3 debugging peripherals"
depends on ARCH_OMAP3
select ARM_AMBA
select OC_ETM
help
Say Y here to enable debugging hardware of omap3
config OMAP3_SDRC_AC_TIMING
bool "Enable SDRC AC timing register changes"
depends on ARCH_OMAP3

1
arch/arm/mach-omap2/Makefile
View file

@ -228,7 +228,6 @@ obj-$(CONFIG_SOC_OMAP5) += omap_hwmod_54xx_data.o
obj-$(CONFIG_SOC_DRA7XX) += omap_hwmod_7xx_data.o
# EMU peripherals
obj-$(CONFIG_OMAP3_EMU) += emu.o
obj-$(CONFIG_HW_PERF_EVENTS) += pmu.o
iommu-$(CONFIG_OMAP_IOMMU) := omap-iommu.o

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