Commit graph

112 commits

Author SHA1 Message Date
Kumar Gala
0bb4665df7 include: Move ptp_clock.h to drivers/ptp_clock.h
Move ptp_clock.h out of the top level include/ dir into
include/drivers/ptp_clock.h and deprecated the old location.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2021-03-25 10:09:33 +02:00
Guðni Már Gilbert
bf93d4f1a0 drivers: ethernet: gmac: fix coverity issue
If return value is negative (failed) then log the error with a
message.

Coverity-CID: 219519
Fixes #32927

Signed-off-by: Guðni Már Gilbert <gudni.m.g@gmail.com>
2021-03-11 08:49:10 -05:00
Kumar Gala
02703e60d9 device: Remove DEVICE_DT_DECLARE / DEVICE_DT_INST_DECLARE
Now that we generate a header that extern's all possible devicetree
based device struct we can remove DEVICE_DT_DECLARE and
DEVICE_DT_INST_DECLARE as they aren't needed anymore.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2021-01-15 07:16:21 -06:00
Kumar Gala
ce6088380f drivers: ethernet: Convert DEVICE_AND_API_INIT to DEVICE_DEFINE
Convert driver(s) to DEVICE_DEFINE instead of DEVICE_AND_API_INIT
so we can deprecate DEVICE_AND_API_INIT in the future.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-12-19 20:01:24 -05:00
Kumar Gala
ae9e086802 drivers: ethernet: Convert drivers to new DT device macros
Convert ethernet drivers from:

    DEVICE_AND_API_INIT -> DEVICE_DT_INST_DEFINE
    DEVICE_GET -> DEVICE_DT_INST_GET
    DEVICE_DECLARE -> DEVICE_DT_INST_DECLARE
    ETH_NET_DEVICE_INIT -> ETH_NET_DEVICE_DT_INST_DEFINE
    NET_DEVICE_INIT -> NET_DEVICE_DT_INST_DEFINE

etc...

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-12-17 11:02:11 -06:00
Tomasz Bursztyka
ef560e0a53 drivers: Manual const-ification of device driver instance
These are all the case that coccinelle cannot find as they are inside
macro declarations.

Fixed via:

git grep -rlz -E "\(struct device \*" |
	xargs -0 sed -i 's/(struct device/(const struct device/g'

Fixes #27399

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2020-09-02 13:48:13 +02:00
Tomasz Bursztyka
4dcfb5531c isr: Normalize usage of device instance through ISR
The goal of this patch is to replace the 'void *' parameter by 'struct
device *' if they use such variable or just 'const void *' on all
relevant ISRs

This will avoid not-so-nice const qualifier tweaks when device instances
will be constant.

Note that only the ISR passed to IRQ_CONNECT are of interest here.

In order to do so, the script fix_isr.py below is necessary:

from pathlib import Path
import subprocess
import pickle
import mmap
import sys
import re
import os

cocci_template = """
@r_fix_isr_0
@
type ret_type;
identifier P;
identifier D;
@@
-ret_type <!fn!>(void *P)
+ret_type <!fn!>(const struct device *P)
{
 ...
(
 const struct device *D = (const struct device *)P;
|
 const struct device *D = P;
)
 ...
}

@r_fix_isr_1
@
type ret_type;
identifier P;
identifier D;
@@
-ret_type <!fn!>(void *P)
+ret_type <!fn!>(const struct device *P)
{
 ...
 const struct device *D;
 ...
(
 D = (const struct device *)P;
|
 D = P;
)
 ...
}

@r_fix_isr_2
@
type ret_type;
identifier A;
@@
-ret_type <!fn!>(void *A)
+ret_type <!fn!>(const void *A)
{
 ...
}

@r_fix_isr_3
@
const struct device *D;
@@
-<!fn!>((void *)D);
+<!fn!>(D);

@r_fix_isr_4
@
type ret_type;
identifier D;
identifier P;
@@
-ret_type <!fn!>(const struct device *P)
+ret_type <!fn!>(const struct device *D)
{
 ...
(
-const struct device *D = (const struct device *)P;
|
-const struct device *D = P;
)
 ...
}

@r_fix_isr_5
@
type ret_type;
identifier D;
identifier P;
@@
-ret_type <!fn!>(const struct device *P)
+ret_type <!fn!>(const struct device *D)
{
 ...
-const struct device *D;
...
(
-D = (const struct device *)P;
|
-D = P;
)
 ...
}
"""

def find_isr(fn):
    db = []
    data = None
    start = 0

    try:
        with open(fn, 'r+') as f:
            data = str(mmap.mmap(f.fileno(), 0).read())
    except Exception as e:
        return db

    while True:
        isr = ""
        irq = data.find('IRQ_CONNECT', start)
        while irq > -1:
            p = 1
            arg = 1
            p_o = data.find('(', irq)
            if p_o < 0:
                irq = -1
                break;

            pos = p_o + 1

            while p > 0:
                if data[pos] == ')':
                    p -= 1
                elif data[pos] == '(':
                    p += 1
                elif data[pos] == ',' and p == 1:
                    arg += 1

                if arg == 3:
                    isr += data[pos]

                pos += 1

            isr = isr.strip(',\\n\\t ')
            if isr not in db and len(isr) > 0:
                db.append(isr)

            start = pos
            break

        if irq < 0:
            break

    return db

def patch_isr(fn, isr_list):
    if len(isr_list) <= 0:
        return

    for isr in isr_list:
        tmplt = cocci_template.replace('<!fn!>', isr)
        with open('/tmp/isr_fix.cocci', 'w') as f:
            f.write(tmplt)

        cmd = ['spatch', '--sp-file', '/tmp/isr_fix.cocci', '--in-place', fn]

        subprocess.run(cmd)

def process_files(path):
    if path.is_file() and path.suffix in ['.h', '.c']:
        p = str(path.parent) + '/' + path.name
        isr_list = find_isr(p)
        patch_isr(p, isr_list)
    elif path.is_dir():
        for p in path.iterdir():
            process_files(p)

if len(sys.argv) < 2:
    print("You need to provide a dir/file path")
    sys.exit(1)

process_files(Path(sys.argv[1]))

And is run: ./fix_isr.py <zephyr root directory>

Finally, some files needed manual fixes such.

Fixes #27399

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2020-09-02 13:48:13 +02:00
Tomasz Bursztyka
e18fcbba5a device: Const-ify all device driver instance pointers
Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.

A coccinelle rule is used for this:

@r_const_dev_1
  disable optional_qualifier
@
@@
-struct device *
+const struct device *

@r_const_dev_2
 disable optional_qualifier
@
@@
-struct device * const
+const struct device *

Fixes #27399

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2020-09-02 13:48:13 +02:00
Tomasz Bursztyka
98d9b01322 device: Apply driver_api/data attributes rename everywhere
Via coccinelle:

@r_device_driver_api_and_data_1@
struct device *D;
@@
(
D->
-	driver_api
+	api
|
D->
-	driver_data
+	data
)

@r_device_driver_api_and_data_2@
expression E;
@@
(
net_if_get_device(E)->
-	driver_api
+	api
|
net_if_get_device(E)->
-	driver_data
+	data
)

And grep/sed rules for macros:

git grep -rlz 'dev)->driver_data' |
	xargs -0 sed -i 's/dev)->driver_data/dev)->data/g'

git grep -rlz 'dev->driver_data' |
	xargs -0 sed -i 's/dev->driver_data/dev->data/g'

git grep -rlz 'device->driver_data' |
	xargs -0 sed -i 's/device->driver_data/device->data/g'

Fixes #27397

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2020-08-11 19:30:53 +02:00
Peter Bigot
bc34501892 drivers: use macro to define device structures
Replace individual device instance definitions with the macro that
expands to the equivalent change.

    F='struct device DEVICE_NAME_GET'
    git grep -l "$F" \
     | xargs sed -i -r \
       -e "s@$F"'\(([^)]*)\);@DEVICE_DECLARE(\1);@'

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
2020-06-08 15:01:52 -04:00
Kumar Gala
a1b77fd589 zephyr: replace zephyr integer types with C99 types
git grep -l 'u\(8\|16\|32\|64\)_t' | \
		xargs sed -i "s/u\(8\|16\|32\|64\)_t/uint\1_t/g"
	git grep -l 's\(8\|16\|32\|64\)_t' | \
		xargs sed -i "s/s\(8\|16\|32\|64\)_t/int\1_t/g"

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-06-08 08:23:57 -05:00
Kumar Gala
b19cf0bed3 drivers: eth: Get Manual MAC address from devicetree
Move from a Kconfig to select/initialize the MAC address to using the
"local-mac-address" property in devicetree.  If the property is set the
drivers will initialize the mac-address from the devicetree (unless the
mac address is all 0's).  The MAC address might get overwritten by
either a driver specific means or by the setting of
"zephyr,random-mac-address" in the devicetree.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-05-09 16:29:57 +02:00
Kumar Gala
1de61b4c42 drivers: eth: Replace driver specific RANDOM_MAC Kconfig with devicetree
Utilize the devicetree property "zephyr,random-mac-address" to determine
if a driver should use a random mac address and remove the associated
Kconfig options that enabled this feature.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-05-09 16:29:57 +02:00
Kumar Gala
8178f76470 drivers: eth: Refactor generation of random mac into help function
Rather than having each driver have its own slightly different way of
generating a random mac address, add a helper function that they all can
call so we do it one way.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-05-09 16:29:57 +02:00
Kumar Gala
dff8715615 drivers: ethernet: sam_gmac: rework pin config
Reworked sam_gmac driver to get pin ctrl/mux configuration information
from the device tree instead of via Kconfig and defines in soc_pinmap.h

We remove defines from soc_pinmap.h that are no longer needed due to
getting all that information from devicetree.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2020-05-04 11:32:10 -05:00
Jukka Rissanen
5a105a67af drivers: eth: gmac: Convert to use k_timeout_t
Convert the code to use k_timeout_t when applicable.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2020-05-01 14:19:18 -05:00
Stephanos Ioannidis
5b248ce792 drivers: ethernet: eth_sam_gmac: Add SAM0 family support
This commit adds the GMAC driver support for the Ethernet-capable SAM0
family devices (SAM E53 and E54 at this time).

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2020-04-17 04:56:28 -05:00
Gerson Fernando Budke
afcfd2b52c drivers: ethernet: eth_sam_gmac.c: Fix macro name
Fix macro name from disable_all_queue_interrupt to
disable_all_priority_queue_interrupt.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-04-17 09:23:33 +03:00
Gerson Fernando Budke
15c048a1dd drivers: eth: sam_gmac: Use DT max_frame_size option
This commit updates the Atmel SAM GMAC driver to select max frame size
value from the device tree. Now GMAC driver can operate with the three
different frame size options available.

The current supported values are: 1518, 1536 and 10240.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-04-17 09:23:33 +03:00
Gerson Fernando Budke
3c4fbfddf5 drivers: eth: sam_gmac: Fix phy layer setup
The current setup of physical layer forces RMII interface. The code was
refactored to have only one point to select proper phy interface. Now,
GMAC driver works with both RMII or MII interface. The phy connection
type is now selected by device tree. The default phy connection is RMII.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-04-17 09:23:33 +03:00
Gerson Fernando Budke
84ecfd9b57 drivers: eth: sam_gmac: Add data cache checks
Improve data cache conditional build. Now data cache code is build
only if device have support to it. This enables GMAC driver for use
with devices that don't have data cache instructions.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-04-17 09:23:33 +03:00
Gerson Fernando Budke
8c2a1597db drivers: eth: eth_sam_gmac: Split DMA queue flags
This cleans up DMA flags by separating the necessary flags for devices
with one or multiple RX/TX queues.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-04-17 09:23:33 +03:00
Stephanos Ioannidis
57c28c0d44 drivers: ethernet: sam_gmac: Convert to new DT_INST macros
This commit converts the Atmel SAM GMAC driver to use the new DT_INST
macro APIs.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2020-03-31 08:08:29 -05:00
Stephanos Ioannidis
b5745a8350 drivers: ethernet: sam_gmac: Use device tree values
This commit updates the Atmel SAM GMAC driver to use the device tree
values for GMAC hardware configuration.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2020-03-31 08:08:29 -05:00
Tomasz Bursztyka
4ae72db135 net: Enable PM settings on network devices
By changing the various *NET_DEVICE* macros. It is up to the device
drivers to either set a proper PM function or, if not supported or PM
disabled, to use device_pm_control_nop relevantly.

All existing macro calls are updated. Since no PM support was added so
far, device_pm_control_nop is used as the default everywhere.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2020-03-27 14:48:30 +02:00
Stephanos Ioannidis
22d0a1dfb3 drivers: ethernet: sam_gmac: Do not use "NTO" typedef style
The Atmel DFP headers define two "component typedef styles": RFO and
NTO; where the latter makes use of bit field structs to access hardware
registers.

The default component typedef style assumed by the DFP headers (i.e.
when `COMPONENT_TYPEDEF_STYLE` is not explicitly defined) is "RFO" and
this is indeed the component typedef style used throughout the Zephyr
Atmel SAM drivers, except in the particular instance which this commit
addresses.

The use of `GMAC_TA_Type` bit field struct, which is an "NTO" style
construct, is no longer possible with the latest DFPs because
conditional compilation checks for the bit field struct definitions
were added to restrict the use of such constructs to only when the
global component typedef style is set to "NTO".

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2020-03-26 09:23:48 -05:00
Stephanos Ioannidis
aa85756bf5 drivers: ethernet: eth_sam_gmac: Detect and report link status
This commit adds the "monitor task" to detect and report any changes
in the PHY link status to the operating system.

The monitor task is perodically executed to poll the link status from
the PHY and call `net_eth_carrier_{off,on}` based on the detected
link status change.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2020-03-21 15:37:59 +02:00
Stephanos Ioannidis
d7a77fff99 drivers: ethernet: eth_sam_gmac: Do not force RMII
The `link_configure` function currently configures the `GMAC_UR`
register and forces the RMII interface.

This is not necessary because the `GMAC_UR` register is already
configured with an appropriate value based on `CONFIG_ETH_SAM_GMAC_MII`
in `gmac_init`.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
2020-03-21 15:37:59 +02:00
Gerson Fernando Budke
f7564323f5 drivers: eth: sam_gmac: Add priority queue checks
Improve priority queue conditional build. Now priority queue code is
enabled only if device have support to it. This enables GMAC driver
for devices with only one queue for RX/TX.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-03-04 23:11:42 +02:00
Gerson Fernando Budke
51f7fc8fba drivers: eth: eth_sam_gmac: Move queue init block
Move queue init block to avoid add many defines on code.

Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-03-04 23:11:42 +02:00
Gerson Fernando Budke
04e6045505 drivers: eth: eth_sam_gmac: Fix priority queues
The Atmel SAM SoC with ethernet port uses same GMAC driver. However,
there are differences between SoC GMAC implementation. Some SoCs have
priority queue and system can configure 0 up to 5, depending of SoC
version. This update current GMAC driver adding missing definitions.

Co-authored-by: Stephanos Ioannidis <root@stephanos.io>
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
2020-03-04 23:11:42 +02:00
Daniel Glöckner
47ea3c4e2c drivers: eth: sam-e70: revision B has more queues
The first revision of the SAM E70 soc had three queues. The current
revision B has six queues. If we don't initialize all queues, the DMA
engine gets stuck when trying to read a descriptor from NULL. To enable
the initialization of the additional queues, the correct soc has to be
selected in the config options, f.ex. CONFIG_SOC_PART_NUMBER_SAME70Q21B
instead of CONFIG_SOC_PART_NUMBER_SAME70Q21.

Also rename GMAC_QUEUE_NO to GMAC_QUEUE_NUM as requested during review.

Signed-off-by: Daniel Glöckner <dg@emlix.com>
2020-03-04 23:11:42 +02:00
Jukka Rissanen
92481765a2 drivers: ethernet: Set the context iface ptr to main interface
If the Ethernet driver has VLAN enabled (only native_posix, mcux
or gmac has VLAN supported), then the iface pointer in ethernet
context should contain the main network interface. This is needed
so that the interface will get link address set to it properly.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
2020-01-30 09:42:07 +02:00
Erwin Rol
c0ae674630 drivers: ethernet: stm32, sam, mcux: correctly set LAA bit
When randomly generating MAC addresses they will always be
locally administrated addresses, so the LAA bit should be set.
The LAA bit is the 2nd bit of the 1st byte of the MAC address
not the 2nd bit of the 4th byte.

Fixes: #16452

Signed-off-by: Erwin Rol <erwin@erwinrol.com>
2019-09-18 19:14:39 +03:00
Anas Nashif
a2fd7d70ec cleanup: include/: move misc/util.h to sys/util.h
move misc/util.h to sys/util.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00
Anas Nashif
5eb90ec169 cleanup: include/: move misc/__assert.h to sys/__assert.h
move misc/__assert.h to sys/__assert.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00
Anas Nashif
8f692c7d38 cleanup: include/: move i2c.h to drivers/i2c.h
move i2c.h to drivers/i2c.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00
Tomasz Gorochowik
a000ba797c drivers: eth: gmac: Fix MAC address info log
Each MAC byte should be printed with the %02x format.

Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
2019-04-17 10:34:22 -05:00
Ravi kumar Veeramally
ecdef39223 drivers: sam_gmac: Fix compilation warning
Line continuation was missing for #error macro.

Fixes  #15096

Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@linux.intel.com>
2019-04-03 09:32:55 -04:00
Patrik Flykt
24d71431e9 all: Add 'U' suffix when using unsigned variables
Add a 'U' suffix to values when computing and comparing against
unsigned variables.

Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
2019-03-28 17:15:58 -05:00
Tomasz Bursztyka
cf322c44db net: Switch usage of net_pkt_get_reserve to net_pkt_alloc
Some places were still using the old allocator. Using the new one does
not change any behavior. This will help to remove the useless data_len
attribute in net_pkt which legacy allocator was still setting.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2019-03-20 10:27:14 -05:00
Tomasz Gorochowik
f6a95a02ed drivers: eth: gmac: fix qav bandwidth sharing issues
Removing the TX timeout handling in the GMAC driver (commit 18b07e09e0)
revealed some issues with the way hardware priority queues work.

For cases with both hardware priority queues enabled, with the default
recommended delta bandwidths (0% - 75%), the lower priority queue (0%)
is hardly able to send any packets. This became visible, because without
the timeout mechanism, we quickly ran out of available TX buffers if
there were multiple packets being queued to the queue.

Here is an excerpt from 802.1Q, chapter 34.3.1 which describes how Qav
bandwidth sharing SHOULD work:

  The deltaBandwidth(N) for a given N, plus the deltaBandwidth(N) values
  for any higher priority queues (larger values of N) defines the total
  percentage of the Port’s bandwidth that can be reserved for that queue
  and all higher priority queues. For the highest priority queue, this
  means that the maximum value of operIdleSlope(N) is deltaBandwidth(N)%
  of portTransmitRate. However, if operIdleSlope(N) is actually less
  than this maximum value, any lower priority queue that supports the
  credit-based shaper algorithm can make use of the reservable bandwidth
  that is unused by the higher priority queue. So, for queue N-1, the
  maximum value of (operIdleSlope(N) + operIdleSlope(N-1)) is
  (deltaBandwidth(N) + deltaBandwidth(N1))% of portTransmitRate.

However in reality, the lower priority queues (N-1) on the SAM GMAC
hardware DO NOT use the bandwidth available from the higher priority
queues (N).

This commits fixes the issue by changing the defaults. These are still
set to the recommended 75% (total), but this percentage is split between
the priority queues manually.

Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
2019-03-13 06:00:04 -05:00
Tomasz Gorochowik
3c0c92ab3f drivers: eth: gmac: normalize queue init messages
There is a log message printed for the non-priority queue (Queue 0). Add
the same message for the priority queues too when they are enabled, and
a corresponding message when the queue is not used (set to idle).

Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
2019-03-13 06:00:04 -05:00
Tomasz Gorochowik
21aaa9958e drivers: eth: gmac: Swap Qav queue registers
Throughout the manual, the queues GMAC is equipped with are identified
by a number - Queue 0, Queue 1 and Queue 2.

However in the context of Qav, the queues are identified with a
character (note that there are only two queues as Qav is not used for
the non-priority queue) - Queue A and Queue B.

Queue B and Queue 2 are also called "the highest priority queues".

Based on that, the previous implementation was using the following
mapping:

  Queue 1 - Queue A
  Queue 2 - Queue B

However when running some specific tests, that is for example forcing
all the traffic to Queue 1, it showed that this queue is actually
affected by the Queue B registers. Similarly, Queue 2 seems to be
affected by the Queue A registers.

Based on that observation, this commit changes the registers used to
work with the following mapping:

  Queue 1 - Queue B
  Queue 2 - Queue A

Note that this is based solely on observations, there is nothing in the
datasheet that confirms this, and the "highest priority" label suggests
it is otherwise.

Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
2019-03-13 06:00:04 -05:00
Tomasz Gorochowik
b54f528951 drivers: eth: gmac: Add option to force packets to a specific queue
This option is meant to be used only for debugging. Use it to force all
traffic to be routed through a specific hardware queue. With this option
enabled it is easier to verify whether the chosen hardware queue
actually works.
This works only if there are four or fewer RX traffic classes enabled as
the SAM GMAC hardware supports screening up to four traffic classes.

Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
2019-03-13 06:00:04 -05:00
Tomasz Gorochowik
35b7fde8a6 drivers: eth: gmac: fix screening registers limit check
The j iterator is used for priorities, and the i iterator is used for
choosing the actual screening register. Therefore the screening register
availability needs to be checked with i.

This commit also improves the readability by doing two things:
* by moving the screening register index check to a place where the
  index is going to be actually used
* by using the ARRAY_SIZE macro instead of a hard-coded number as the
  upper limit

Signed-off-by: Tomasz Gorochowik <tgorochowik@antmicro.com>
2019-03-06 11:43:17 -06:00
Aurelien Jarno
413ede4b89 driver: eth: gmac: remove ring_buf usage in the RX path
The ring_buf implementation is basically used as an array of net_buf
pointers in the RX path. The tail and head indexes are taken from the
RX descriptors and not from the ring_buf. That's why for example the
fact that head is never initialized doesn't cause problem. Only len is
used in free_rx_bufs(), but anyway this function is plainly broken as
it always free the first net_buf and doesn't set it back to NULL.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2019-02-14 22:15:29 -05:00
Aurelien Jarno
cc1d1478ac driver: eth: gmac: wait until the packet is sent before returning
Scale down the TX path of the GMAC driver by waiting for a packet to be
fully sent before returning from the send function. This has a small
performance impact, but has a few advantages:
- It allows the Ethernet code to modify the packet afterward, fixing PTP
  support on this board (see PR #12563).
- It returns an error to the IP stack in case of a transmit failure.
- It doesn't require net_buf to be thread safe.

This change can be reverted by changing GMAC_MULTIPLE_TX_PACKETS from 0
to 1.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2019-02-14 22:15:29 -05:00
Aurelien Jarno
9072d34f30 drivers: eth: gmac: drop compile-time check about number of TX packets
The GMAC driver tries to ensure that it can always send a complete
Ethernet frame. However in the TX path this is the problem of the IP
stack: if the buffers can't be allocated, they won't be sent. Therefore
just drop the check.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2019-02-12 15:38:06 -05:00
Aurelien Jarno
fa91da4992 drivers: eth: gmac: only keep a reference to the packet when PTP is used
The SAM GMAC Ethernet driver currently keeps a reference to the packet
being sent in addition than keeping of references of the fragments. In
practice this is only needed when PTP is enabled, otherwise the driver
only need to prevent the fragment (or even their content) to be changed.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2019-02-08 12:41:11 +02:00