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21 Commits

Author SHA1 Message Date
Breno Leitao
61cdb09ff7 wifi: qtnfmac: allocate dummy net_device dynamically 
Embedding net_device into structures prohibits the usage of flexible
arrays in the net_device structure. For more details, see the discussion
at [1].

Un-embed the net_device from struct qtnf_bus by converting it
into a pointer. Then use the leverage alloc_netdev() to allocate the
net_device object at qtnf_pcie_probe(). The free of the device occurs at
qtnf_pcie_remove().

[1] https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240319172634.894327-1-leitao@debian.org
 2024-03-21 17:09:25 +02:00
Jakub Kicinski
193eb523d2 qtnfmac: switch to netif_napi_add_weight() 
qtnfmac chooses its own magic NAPI weight so switch to the new
API created for those who don't use NAPI_POLL_WEIGHT.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220504163316.549648-4-kuba@kernel.org
 2022-05-06 08:47:52 +03:00
Christophe JAILLET
06e1359cc8 qtnfmac: switch from 'pci_' to 'dma_' API 
The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below.

It has been compile tested.

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
 2021-08-23 11:56:57 +01:00
Heiner Kallweit
45fc3fd430 qtnfmac: switch to core handling of rx/tx byte/packet counters 
Use netdev->tstats instead of a member of qtnf_vif for storing a pointer
to the per-cpu counters. This allows us to use core functionality for
statistics handling.
The driver sets netdev->needs_free_netdev, therefore freeing the per-cpu
counters at the right point in time is a little bit tricky. Best option
seems to be to use the ndo_init/ndo_uninit callbacks.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
 2020-11-12 14:58:27 -08:00
Allen Pais
aff8e8d02e qtnfmac: convert tasklets to use new tasklet_setup() API 
In preparation for unconditionally passing the
struct tasklet_struct pointer to all tasklet
callbacks, switch to using the new tasklet_setup()
and from_tasklet() to pass the tasklet pointer explicitly.

Signed-off-by: Romain Perier <romain.perier@gmail.com>
Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200817090637.26887-14-allen.cryptic@gmail.com
 2020-08-27 16:22:11 +03:00
Christophe JAILLET
c960e2b384 qtnfmac: Simplify code in _attach functions 
There is no need to re-implement 'netdev_alloc_skb_ip_align()' here.
Keep the code simple.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200407193233.9439-1-christophe.jaillet@wanadoo.fr
 2020-04-14 18:08:45 +03:00
Sergey Matyukevich
946d077a42 qtnfmac: fix potential Spectre vulnerabilities 
Fix potential Spectre vulnerabilities and other warnings
reported by smatch:

drivers/net/wireless/quantenna/qtnfmac/core.c:49 qtnf_core_get_mac() warn: potential spectre issue 'bus->mac' [r] (local cap)
drivers/net/wireless/quantenna/qtnfmac/core.c:51 qtnf_core_get_mac() warn: possible spectre second half.  'mac'
drivers/net/wireless/quantenna/qtnfmac/event.c:671 qtnf_event_parse() warn: potential spectre issue 'mac->iflist' [r] (local cap)
drivers/net/wireless/quantenna/qtnfmac/pcie/pearl_pcie.c:912 qtnf_pcie_skb_send() warn: variable dereferenced before check 'skb' (see line 881)

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2020-02-12 18:16:49 +02:00
Igor Mitsyanko
904628d313 qtnfmac: add interface ID to each packet 
Add interface ID information to the tail of each transmitted packet
so that firmware can know to which interface the packet belongs to.
This is only needed if device supports HW switch capability.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2019-11-20 09:42:57 +02:00
Sergey Matyukevich
97aef03cb7 qtnfmac: modify Rx descriptors queue setup 
Rx descriptors queue length is hardware specific. Current common default
value is no more than an accident. So move Rx descriptor queue setup to
platform PCIe backend in the same way as it is already done for Tx.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2019-11-14 17:28:50 +02:00
Fuqian Huang
52d4261862 wireless: Remove call to memset after dma_alloc_coherent 
In commit 518a2f1925
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.

Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2019-10-15 08:20:16 +03:00
Sergey Matyukevich
ae1946be26 qtnfmac: fix core attach error path in pcie backend 
Report that firmware is up and running only for successful firmware
download. Simplify qtnf_pcie_fw_boot_done: modify error path so that
no need to pass firmware dowload result to this function. Finally,
do not create debugfs entries if firmware download succeeded,
but core attach failed.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2019-04-04 12:57:31 +03:00
Igor Mitsyanko
b7da53cd6c qtnfmac_pcie: use single PCIe driver for all platforms 
Single PCIe driver can identify hardware type by reading CHIP ID at
probe time and invoking a correct initialization sequence.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-11-06 18:53:49 +02:00
Sergey Matyukevich
b458a033ca qtnfmac: use SPDX identifier for pcie bus layer files 
Change pcie bus layer licensing information to SPDX format.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-13 20:04:47 +03:00
Igor Mitsyanko
033a759921 qtnfmac_pcie: check for correct CHIP ID at pcie probe 
Make sure that wifi device is of supported variant by checking it's CHIP ID
before completing a probe sequence.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:40:34 +03:00
Igor Mitsyanko
addc754070 qtnfmac_pcie: extract platform-independent PCIe code 
Extract platform-independent PCIe driver code into a separate file, and
use it from platform-specific modules.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:40:26 +03:00
Igor Mitsyanko
789763b683 qtnfmac_pcie: rename platform-specific functions 
Rename several functions to indicate that they are platform specific.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:40:16 +03:00
Igor Mitsyanko
c9ff6c9157 qtnfmac_pcie: separate platform-independent PCIe structure 
Move platform-independent PCIe data structure to a separate header file
so it can be reused by different devices.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:40:12 +03:00
Igor Mitsyanko
21077d09b4 qtnfmac_pcie: pearl: rename spinlock tx0_lock to tx_lock 
tx_lock name will later be reused when common pcie code is extracted to
separate files.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:40:10 +03:00
Igor Mitsyanko
d0b95bfa11 qtnfmac_pcie: indicate pearl-specific structures by their names 
In preparation to extract common PCIe driver state, indicate
PEARL-specific structures by their name and move them to pearl-specific
source file.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:40:08 +03:00
Igor Mitsyanko
91dcecece0 qtnfmac_pcie: rename private Pearl PCIe state structure 
In preparation to extract common pcie driver state into a separate
structure, rename Pearl-specific state to qtnf_pcie_pearl_state and move
it directly to pearl-specific PCIe source file.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:40:05 +03:00
Igor Mitsyanko
2ef0ecd717 qtnfmac_pcie: move Pearl pcie sources to pcie-specific directory 
In preparation to extract common qtnfmac PCIe driver sources into a
separate file, move existing Pearl-specific pcie driver sources to pcie/
directory.

Signed-off-by: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 2018-10-01 18:39:59 +03:00