[PATCH 19/37] mpt fusion: add HAS_IOPORT dependencies

[PATCH 19/37] mpt fusion: add HAS_IOPORT dependencies

[Niklas Schnelle]

In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to add HAS_IOPORT as dependency for
those drivers using them.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
---
 drivers/message/fusion/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/message/fusion/Kconfig b/drivers/message/fusion/Kconfig
index a3d0288fd0e2..88a6e506a942 100644
--- a/drivers/message/fusion/Kconfig
+++ b/drivers/message/fusion/Kconfig
@@ -2,7 +2,7 @@
 
 menuconfig FUSION
 	bool "Fusion MPT device support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	help
 	Say Y here to get to see options for Fusion Message
 	Passing Technology (MPT) drivers.
-- 
2.32.0

[RFC v2 20/39] mpt fusion: add HAS_IOPORT dependencies

[Niklas Schnelle]

In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to add HAS_IOPORT as dependency for
those drivers using them.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
---
 drivers/message/fusion/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/message/fusion/Kconfig b/drivers/message/fusion/Kconfig
index a3d0288fd0e2..88a6e506a942 100644
--- a/drivers/message/fusion/Kconfig
+++ b/drivers/message/fusion/Kconfig
@@ -2,7 +2,7 @@
 
 menuconfig FUSION
 	bool "Fusion MPT device support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	help
 	Say Y here to get to see options for Fusion Message
 	Passing Technology (MPT) drivers.
-- 
2.32.0

[PATCH 27/37] scsi: add HAS_IOPORT dependencies

[Niklas Schnelle]

In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to add HAS_IOPORT as dependency for
those drivers using them.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
---
 drivers/scsi/Kconfig                   | 19 ++++++++++---------
 drivers/scsi/aic7xxx/Kconfig.aic79xx   |  2 +-
 drivers/scsi/aic7xxx/Kconfig.aic7xxx   |  2 +-
 drivers/scsi/aic94xx/Kconfig           |  2 +-
 drivers/scsi/megaraid/Kconfig.megaraid |  6 +++---
 drivers/scsi/mvsas/Kconfig             |  2 +-
 drivers/scsi/qla2xxx/Kconfig           |  2 +-
 7 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 6e3a04107bb6..40430aa8569b 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -333,7 +333,7 @@ config SGIWD93_SCSI
 
 config BLK_DEV_3W_XXXX_RAID
 	tristate "3ware 5/6/7/8xxx ATA-RAID support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  3ware is the only hardware ATA-Raid product in Linux to date.
 	  This card is 2,4, or 8 channel master mode support only.
@@ -380,7 +380,7 @@ config SCSI_3W_SAS
 
 config SCSI_ACARD
 	tristate "ACARD SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This driver supports the ACARD SCSI host adapter.
 	  Support Chip <ATP870 ATP876 ATP880 ATP885>
@@ -472,7 +472,7 @@ config SCSI_DPT_I2O
 config SCSI_ADVANSYS
 	tristate "AdvanSys SCSI support"
 	depends on SCSI
-	depends on ISA || EISA || PCI
+	depends on (ISA || EISA || PCI) && HAS_IOPORT
 	depends on ISA_DMA_API || !ISA
 	help
 	  This is a driver for all SCSI host adapters manufactured by
@@ -643,7 +643,7 @@ config SCSI_SNIC_DEBUG_FS
 
 config SCSI_DMX3191D
 	tristate "DMX3191D SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  This is support for Domex DMX3191D SCSI Host Adapters.
@@ -657,7 +657,7 @@ config SCSI_FDOMAIN
 
 config SCSI_FDOMAIN_PCI
 	tristate "Future Domain TMC-3260/AHA-2920A PCI SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_FDOMAIN
 	help
 	  This is support for Future Domain's PCI SCSI host adapters (TMC-3260)
@@ -710,7 +710,7 @@ config SCSI_GENERIC_NCR5380
 
 config SCSI_IPS
 	tristate "IBM ServeRAID support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This is support for the IBM ServeRAID hardware RAID controllers.
 	  See <http://www.developer.ibm.com/welcome/netfinity/serveraid.html>
@@ -770,7 +770,7 @@ config SCSI_IBMVFC_TRACE
 
 config SCSI_INITIO
 	tristate "Initio 9100U(W) support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This is support for the Initio 91XXU(W) SCSI host adapter.  Please
 	  read the SCSI-HOWTO, available from
@@ -781,7 +781,7 @@ config SCSI_INITIO
 
 config SCSI_INIA100
 	tristate "Initio INI-A100U2W support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This is support for the Initio INI-A100U2W SCSI host adapter.
 	  Please read the SCSI-HOWTO, available from
@@ -793,6 +793,7 @@ config SCSI_INIA100
 config SCSI_PPA
 	tristate "IOMEGA parallel port (ppa - older drives)"
 	depends on SCSI && PARPORT_PC
+	depends on HAS_IOPORT
 	help
 	  This driver supports older versions of IOMEGA's parallel port ZIP
 	  drive (a 100 MB removable media device).
@@ -1187,7 +1188,7 @@ config SCSI_SIM710
 
 config SCSI_DC395x
 	tristate "Tekram DC395(U/UW/F) and DC315(U) SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  This driver supports PCI SCSI host adapters based on the ASIC
diff --git a/drivers/scsi/aic7xxx/Kconfig.aic79xx b/drivers/scsi/aic7xxx/Kconfig.aic79xx
index a47dbd500e9a..4bc53eec4c83 100644
--- a/drivers/scsi/aic7xxx/Kconfig.aic79xx
+++ b/drivers/scsi/aic7xxx/Kconfig.aic79xx
@@ -5,7 +5,7 @@
 #
 config SCSI_AIC79XX
 	tristate "Adaptec AIC79xx U320 support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	This driver supports all of Adaptec's Ultra 320 PCI-X
diff --git a/drivers/scsi/aic7xxx/Kconfig.aic7xxx b/drivers/scsi/aic7xxx/Kconfig.aic7xxx
index 0cfd92ce750a..f0425145a5f4 100644
--- a/drivers/scsi/aic7xxx/Kconfig.aic7xxx
+++ b/drivers/scsi/aic7xxx/Kconfig.aic7xxx
@@ -5,7 +5,7 @@
 #
 config SCSI_AIC7XXX
 	tristate "Adaptec AIC7xxx Fast -> U160 support"
-	depends on (PCI || EISA) && SCSI
+	depends on (PCI || EISA) && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	This driver supports all of Adaptec's Fast through Ultra 160 PCI
diff --git a/drivers/scsi/aic94xx/Kconfig b/drivers/scsi/aic94xx/Kconfig
index 71931c371b1c..aaa8dadc6e1c 100644
--- a/drivers/scsi/aic94xx/Kconfig
+++ b/drivers/scsi/aic94xx/Kconfig
@@ -8,7 +8,7 @@
 
 config SCSI_AIC94XX
 	tristate "Adaptec AIC94xx SAS/SATA support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select SCSI_SAS_LIBSAS
 	select FW_LOADER
 	help
diff --git a/drivers/scsi/megaraid/Kconfig.megaraid b/drivers/scsi/megaraid/Kconfig.megaraid
index 2adc2afd9f91..3f2ce1eb081c 100644
--- a/drivers/scsi/megaraid/Kconfig.megaraid
+++ b/drivers/scsi/megaraid/Kconfig.megaraid
@@ -1,13 +1,13 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config MEGARAID_NEWGEN
 	bool "LSI Logic New Generation RAID Device Drivers"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	LSI Logic RAID Device Drivers
 
 config MEGARAID_MM
 	tristate "LSI Logic Management Module (New Driver)"
-	depends on PCI && SCSI && MEGARAID_NEWGEN
+	depends on PCI && HAS_IOPORT && SCSI && MEGARAID_NEWGEN
 	help
 	Management Module provides ioctl, sysfs support for LSI Logic
 	RAID controllers.
@@ -67,7 +67,7 @@ config MEGARAID_MAILBOX
 
 config MEGARAID_LEGACY
 	tristate "LSI Logic Legacy MegaRAID Driver"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	This driver supports the LSI MegaRAID 418, 428, 438, 466, 762, 490
 	and 467 SCSI host adapters. This driver also support the all U320
diff --git a/drivers/scsi/mvsas/Kconfig b/drivers/scsi/mvsas/Kconfig
index 79812b80743b..5ac7fd593b17 100644
--- a/drivers/scsi/mvsas/Kconfig
+++ b/drivers/scsi/mvsas/Kconfig
@@ -9,7 +9,7 @@
 
 config SCSI_MVSAS
 	tristate "Marvell 88SE64XX/88SE94XX SAS/SATA support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select SCSI_SAS_LIBSAS
 	select FW_LOADER
 	help
diff --git a/drivers/scsi/qla2xxx/Kconfig b/drivers/scsi/qla2xxx/Kconfig
index 802c373fd6d9..a584708d3056 100644
--- a/drivers/scsi/qla2xxx/Kconfig
+++ b/drivers/scsi/qla2xxx/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config SCSI_QLA_FC
 	tristate "QLogic QLA2XXX Fibre Channel Support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	depends on SCSI_FC_ATTRS
 	depends on NVME_FC || !NVME_FC
 	select FW_LOADER
-- 
2.32.0

[RFC v2 30/39] scsi: add HAS_IOPORT dependencies

[Niklas Schnelle]

In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
not being declared. We thus need to add HAS_IOPORT as dependency for
those drivers using them.

Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
---
 drivers/scsi/Kconfig                   | 19 ++++++++++---------
 drivers/scsi/aic7xxx/Kconfig.aic79xx   |  2 +-
 drivers/scsi/aic7xxx/Kconfig.aic7xxx   |  2 +-
 drivers/scsi/aic94xx/Kconfig           |  2 +-
 drivers/scsi/megaraid/Kconfig.megaraid |  6 +++---
 drivers/scsi/mvsas/Kconfig             |  2 +-
 drivers/scsi/qla2xxx/Kconfig           |  2 +-
 7 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 6e3a04107bb6..40430aa8569b 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -333,7 +333,7 @@ config SGIWD93_SCSI
 
 config BLK_DEV_3W_XXXX_RAID
 	tristate "3ware 5/6/7/8xxx ATA-RAID support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  3ware is the only hardware ATA-Raid product in Linux to date.
 	  This card is 2,4, or 8 channel master mode support only.
@@ -380,7 +380,7 @@ config SCSI_3W_SAS
 
 config SCSI_ACARD
 	tristate "ACARD SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This driver supports the ACARD SCSI host adapter.
 	  Support Chip <ATP870 ATP876 ATP880 ATP885>
@@ -472,7 +472,7 @@ config SCSI_DPT_I2O
 config SCSI_ADVANSYS
 	tristate "AdvanSys SCSI support"
 	depends on SCSI
-	depends on ISA || EISA || PCI
+	depends on (ISA || EISA || PCI) && HAS_IOPORT
 	depends on ISA_DMA_API || !ISA
 	help
 	  This is a driver for all SCSI host adapters manufactured by
@@ -643,7 +643,7 @@ config SCSI_SNIC_DEBUG_FS
 
 config SCSI_DMX3191D
 	tristate "DMX3191D SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  This is support for Domex DMX3191D SCSI Host Adapters.
@@ -657,7 +657,7 @@ config SCSI_FDOMAIN
 
 config SCSI_FDOMAIN_PCI
 	tristate "Future Domain TMC-3260/AHA-2920A PCI SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_FDOMAIN
 	help
 	  This is support for Future Domain's PCI SCSI host adapters (TMC-3260)
@@ -710,7 +710,7 @@ config SCSI_GENERIC_NCR5380
 
 config SCSI_IPS
 	tristate "IBM ServeRAID support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This is support for the IBM ServeRAID hardware RAID controllers.
 	  See <http://www.developer.ibm.com/welcome/netfinity/serveraid.html>
@@ -770,7 +770,7 @@ config SCSI_IBMVFC_TRACE
 
 config SCSI_INITIO
 	tristate "Initio 9100U(W) support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This is support for the Initio 91XXU(W) SCSI host adapter.  Please
 	  read the SCSI-HOWTO, available from
@@ -781,7 +781,7 @@ config SCSI_INITIO
 
 config SCSI_INIA100
 	tristate "Initio INI-A100U2W support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	  This is support for the Initio INI-A100U2W SCSI host adapter.
 	  Please read the SCSI-HOWTO, available from
@@ -793,6 +793,7 @@ config SCSI_INIA100
 config SCSI_PPA
 	tristate "IOMEGA parallel port (ppa - older drives)"
 	depends on SCSI && PARPORT_PC
+	depends on HAS_IOPORT
 	help
 	  This driver supports older versions of IOMEGA's parallel port ZIP
 	  drive (a 100 MB removable media device).
@@ -1187,7 +1188,7 @@ config SCSI_SIM710
 
 config SCSI_DC395x
 	tristate "Tekram DC395(U/UW/F) and DC315(U) SCSI support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	  This driver supports PCI SCSI host adapters based on the ASIC
diff --git a/drivers/scsi/aic7xxx/Kconfig.aic79xx b/drivers/scsi/aic7xxx/Kconfig.aic79xx
index a47dbd500e9a..4bc53eec4c83 100644
--- a/drivers/scsi/aic7xxx/Kconfig.aic79xx
+++ b/drivers/scsi/aic7xxx/Kconfig.aic79xx
@@ -5,7 +5,7 @@
 #
 config SCSI_AIC79XX
 	tristate "Adaptec AIC79xx U320 support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	This driver supports all of Adaptec's Ultra 320 PCI-X
diff --git a/drivers/scsi/aic7xxx/Kconfig.aic7xxx b/drivers/scsi/aic7xxx/Kconfig.aic7xxx
index 0cfd92ce750a..f0425145a5f4 100644
--- a/drivers/scsi/aic7xxx/Kconfig.aic7xxx
+++ b/drivers/scsi/aic7xxx/Kconfig.aic7xxx
@@ -5,7 +5,7 @@
 #
 config SCSI_AIC7XXX
 	tristate "Adaptec AIC7xxx Fast -> U160 support"
-	depends on (PCI || EISA) && SCSI
+	depends on (PCI || EISA) && HAS_IOPORT && SCSI
 	select SCSI_SPI_ATTRS
 	help
 	This driver supports all of Adaptec's Fast through Ultra 160 PCI
diff --git a/drivers/scsi/aic94xx/Kconfig b/drivers/scsi/aic94xx/Kconfig
index 71931c371b1c..aaa8dadc6e1c 100644
--- a/drivers/scsi/aic94xx/Kconfig
+++ b/drivers/scsi/aic94xx/Kconfig
@@ -8,7 +8,7 @@
 
 config SCSI_AIC94XX
 	tristate "Adaptec AIC94xx SAS/SATA support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select SCSI_SAS_LIBSAS
 	select FW_LOADER
 	help
diff --git a/drivers/scsi/megaraid/Kconfig.megaraid b/drivers/scsi/megaraid/Kconfig.megaraid
index 2adc2afd9f91..3f2ce1eb081c 100644
--- a/drivers/scsi/megaraid/Kconfig.megaraid
+++ b/drivers/scsi/megaraid/Kconfig.megaraid
@@ -1,13 +1,13 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config MEGARAID_NEWGEN
 	bool "LSI Logic New Generation RAID Device Drivers"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	LSI Logic RAID Device Drivers
 
 config MEGARAID_MM
 	tristate "LSI Logic Management Module (New Driver)"
-	depends on PCI && SCSI && MEGARAID_NEWGEN
+	depends on PCI && HAS_IOPORT && SCSI && MEGARAID_NEWGEN
 	help
 	Management Module provides ioctl, sysfs support for LSI Logic
 	RAID controllers.
@@ -67,7 +67,7 @@ config MEGARAID_MAILBOX
 
 config MEGARAID_LEGACY
 	tristate "LSI Logic Legacy MegaRAID Driver"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	help
 	This driver supports the LSI MegaRAID 418, 428, 438, 466, 762, 490
 	and 467 SCSI host adapters. This driver also support the all U320
diff --git a/drivers/scsi/mvsas/Kconfig b/drivers/scsi/mvsas/Kconfig
index 79812b80743b..5ac7fd593b17 100644
--- a/drivers/scsi/mvsas/Kconfig
+++ b/drivers/scsi/mvsas/Kconfig
@@ -9,7 +9,7 @@
 
 config SCSI_MVSAS
 	tristate "Marvell 88SE64XX/88SE94XX SAS/SATA support"
-	depends on PCI
+	depends on PCI && HAS_IOPORT
 	select SCSI_SAS_LIBSAS
 	select FW_LOADER
 	help
diff --git a/drivers/scsi/qla2xxx/Kconfig b/drivers/scsi/qla2xxx/Kconfig
index 802c373fd6d9..a584708d3056 100644
--- a/drivers/scsi/qla2xxx/Kconfig
+++ b/drivers/scsi/qla2xxx/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config SCSI_QLA_FC
 	tristate "QLogic QLA2XXX Fibre Channel Support"
-	depends on PCI && SCSI
+	depends on PCI && HAS_IOPORT && SCSI
 	depends on SCSI_FC_ATTRS
 	depends on NVME_FC || !NVME_FC
 	select FW_LOADER
-- 
2.32.0

Re: [PATCH 19/37] mpt fusion: add HAS_IOPORT dependencies

[Niklas Schnelle]

On Fri, 2022-04-29 at 15:50 +0200, Niklas Schnelle wrote:
> In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> not being declared. We thus need to add HAS_IOPORT as dependency for
> those drivers using them.
> 
> Co-developed-by: Arnd Bergmann <arnd@kernel.org>
> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
> ---

Sorry everyone. I sent this as PATCH in error while preparing to sent
the same series as RFC. Since e-mail has no remote delete and I lack a
time machine let's just all pretend you only got the RFC.

Re: [PATCH 27/37] scsi: add HAS_IOPORT dependencies

[Niklas Schnelle]

On Fri, 2022-04-29 at 15:50 +0200, Niklas Schnelle wrote:
> In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> not being declared. We thus need to add HAS_IOPORT as dependency for
> those drivers using them.
> 
> Co-developed-by: Arnd Bergmann <arnd@kernel.org>
> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
> ---

Sorry everyone. I sent this as PATCH in error while preparing to sent
the same series as RFC. Since e-mail has no remote delete and I lack a
time machine let's just all pretend you only got the RFC.

Re: [RFC v2 30/39] scsi: add HAS_IOPORT dependencies

[Bjorn Helgaas]

On Fri, Apr 29, 2022 at 03:50:51PM +0200, Niklas Schnelle wrote:
> In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> not being declared. We thus need to add HAS_IOPORT as dependency for
> those drivers using them.

Some of these drivers support devices using either I/O ports or MMIO.
Adding the HAS_IOPORT dependency means MMIO devices that *could* work
on systems without I/O ports, won't work.

Even the MMIO-only devices are probably old and not of much interest.
But if you want to disable them even though they *could* work, I think
that's worth mentioning in the commit log.

> diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
>  config SCSI_IPS
>  	tristate "IBM ServeRAID support"
> -	depends on PCI && SCSI
> +	depends on PCI && HAS_IOPORT && SCSI

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/scsi/ips.c?id=v5.17#n6867

> diff --git a/drivers/scsi/aic7xxx/Kconfig.aic7xxx b/drivers/scsi/aic7xxx/Kconfig.aic7xxx
>  config SCSI_AIC94XX
>  	tristate "Adaptec AIC94xx SAS/SATA support"
> -	depends on PCI
> +	depends on PCI && HAS_IOPORT
>  	select SCSI_SAS_LIBSAS
>  	select FW_LOADER
>  	help

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/scsi/aic7xxx/aic79xx_osm_pci.c?id=v5.17#n304

> diff --git a/drivers/scsi/megaraid/Kconfig.megaraid b/drivers/scsi/megaraid/Kconfig.megaraid
>  config MEGARAID_LEGACY
>  	tristate "LSI Logic Legacy MegaRAID Driver"
> -	depends on PCI && SCSI
> +	depends on PCI && HAS_IOPORT && SCSI

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/scsi/megaraid.c?id=v5.17#n4190

> diff --git a/drivers/scsi/mvsas/Kconfig b/drivers/scsi/mvsas/Kconfig
>  config SCSI_MVSAS
>  	tristate "Marvell 88SE64XX/88SE94XX SAS/SATA support"
> -	depends on PCI
> +	depends on PCI && HAS_IOPORT
>  	select SCSI_SAS_LIBSAS
>  	select FW_LOADER
>  	help

This turns off all MVSAS support, but apparently only mv_64xx.c uses
I/O ports:

  git grep -E "\<(in|out)[bwl]\>" drivers/scsi/mvsas
  git grep -E "\<io[rw](8|16|32)\>" drivers/scsi/mvsas

It doesn't look like the Makefile is currently set up to build
mv_64xx.c separately.

Bjorn

Re: [RFC v2 30/39] scsi: add HAS_IOPORT dependencies

[Arnd Bergmann]

On Wed, May 4, 2022 at 10:42 PM Bjorn Helgaas <helgaas@kernel.org> wrote:
>
> On Fri, Apr 29, 2022 at 03:50:51PM +0200, Niklas Schnelle wrote:
> > In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> > not being declared. We thus need to add HAS_IOPORT as dependency for
> > those drivers using them.
>
> Some of these drivers support devices using either I/O ports or MMIO.
> Adding the HAS_IOPORT dependency means MMIO devices that *could* work
> on systems without I/O ports, won't work.
>
> Even the MMIO-only devices are probably old and not of much interest.
> But if you want to disable them even though they *could* work, I think
> that's worth mentioning in the commit log.

I think this would again make more sense with the original CONFIG_LEGACY_PCI
conditional than the generic HAS_IOPORT one. I don't remember what the
objection was to that symbol.

I think the presence of inb()/outb() is a good indication that a driver is for
obsolete hardware, though of course there are important exceptions to this
that instead need to have the conditional in the code itself (8250,
vga, ipmi, ...)

       Arnd

Re: [RFC v2 30/39] scsi: add HAS_IOPORT dependencies

[Bjorn Helgaas]

On Wed, May 04, 2022 at 11:34:48PM +0200, Arnd Bergmann wrote:
> On Wed, May 4, 2022 at 10:42 PM Bjorn Helgaas <helgaas@kernel.org> wrote:
> > On Fri, Apr 29, 2022 at 03:50:51PM +0200, Niklas Schnelle wrote:
> > > In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> > > not being declared. We thus need to add HAS_IOPORT as dependency for
> > > those drivers using them.
> >
> > Some of these drivers support devices using either I/O ports or MMIO.
> > Adding the HAS_IOPORT dependency means MMIO devices that *could* work
> > on systems without I/O ports, won't work.
> >
> > Even the MMIO-only devices are probably old and not of much interest.
> > But if you want to disable them even though they *could* work, I think
> > that's worth mentioning in the commit log.
> 
> I think this would again make more sense with the original CONFIG_LEGACY_PCI
> conditional than the generic HAS_IOPORT one. I don't remember what the
> objection was to that symbol.

I didn't really like CONFIG_LEGACY_PCI because it wasn't clearly
defined.