Merge tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull hw lockdown support from David Howells:
 "Annotation of module parameters that configure hardware resources
  including ioports, iomem addresses, irq lines and dma channels.

  This allows a future patch to prohibit the use of such module
  parameters to prevent that hardware from being abused to gain access
  to the running kernel image as part of locking the kernel down under
  UEFI secure boot conditions.

  Annotations are made by changing:

        module_param(n, t, p)
        module_param_named(n, v, t, p)
        module_param_array(n, t, m, p)

  to:

        module_param_hw(n, t, hwtype, p)
        module_param_hw_named(n, v, t, hwtype, p)
        module_param_hw_array(n, t, hwtype, m, p)

  where the module parameter refers to a hardware setting

  hwtype specifies the type of the resource being configured. This can
  be one of:

        ioport          Module parameter configures an I/O port
        iomem           Module parameter configures an I/O mem address
        ioport_or_iomem Module parameter could be either (runtime set)
        irq             Module parameter configures an I/O port
        dma             Module parameter configures a DMA channel
        dma_addr        Module parameter configures a DMA buffer address
        other           Module parameter configures some other value

  Note that the hwtype is compile checked, but not currently stored (the
  lockdown code probably won't require it). It is, however, there for
  future use.

  A bonus is that the hwtype can also be used for grepping.

  The intention is for the kernel to ignore or reject attempts to set
  annotated module parameters if lockdown is enabled. This applies to
  options passed on the boot command line, passed to insmod/modprobe or
  direct twiddling in /sys/module/ parameter files.

  The module initialisation then needs to handle the parameter not being
  set, by (1) giving an error, (2) probing for a value or (3) using a
  reasonable default.

  What I can't do is just reject a module out of hand because it may
  take a hardware setting in the module parameters. Some important
  modules, some ipmi stuff for instance, both probe for hardware and
  allow hardware to be manually specified; if the driver is aborts with
  any error, you don't get any ipmi hardware.

  Further, trying to do this entirely in the module initialisation code
  doesn't protect against sysfs twiddling.

  [!] Note that in and of itself, this series of patches should have no
      effect on the the size of the kernel or code execution - that is
      left to a patch in the next series to effect. It does mark
      annotated kernel parameters with a KERNEL_PARAM_FL_HWPARAM flag in
      an already existing field"

* tag 'hwparam-20170420' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (38 commits)
  Annotate hardware config module parameters in sound/pci/
  Annotate hardware config module parameters in sound/oss/
  Annotate hardware config module parameters in sound/isa/
  Annotate hardware config module parameters in sound/drivers/
  Annotate hardware config module parameters in fs/pstore/
  Annotate hardware config module parameters in drivers/watchdog/
  Annotate hardware config module parameters in drivers/video/
  Annotate hardware config module parameters in drivers/tty/
  Annotate hardware config module parameters in drivers/staging/vme/
  Annotate hardware config module parameters in drivers/staging/speakup/
  Annotate hardware config module parameters in drivers/staging/media/
  Annotate hardware config module parameters in drivers/scsi/
  Annotate hardware config module parameters in drivers/pcmcia/
  Annotate hardware config module parameters in drivers/pci/hotplug/
  Annotate hardware config module parameters in drivers/parport/
  Annotate hardware config module parameters in drivers/net/wireless/
  Annotate hardware config module parameters in drivers/net/wan/
  Annotate hardware config module parameters in drivers/net/irda/
  Annotate hardware config module parameters in drivers/net/hamradio/
  Annotate hardware config module parameters in drivers/net/ethernet/
  ...

12 files changed, 26 insertions, 26 deletions

diff --git a/drivers/net/ethernet/3com/3c509.c b/drivers/net/ethernet/3com/3c509.c
index c7f9f2c77da7..db8592d412ab 100644
--- a/drivers/net/ethernet/3com/3c509.c
+++ b/drivers/net/ethernet/3com/3c509.c
@@ -1371,7 +1371,7 @@ el3_resume(struct device *pdev)
 #endif /* CONFIG_PM */
 
 module_param(debug,int, 0);
-module_param_array(irq, int, NULL, 0);
+module_param_hw_array(irq, int, irq, NULL, 0);
 module_param(max_interrupt_work, int, 0);
 MODULE_PARM_DESC(debug, "debug level (0-6)");
 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
diff --git a/drivers/net/ethernet/3com/3c59x.c b/drivers/net/ethernet/3com/3c59x.c
index 40196f41768a..e41245a54f8b 100644
--- a/drivers/net/ethernet/3com/3c59x.c
+++ b/drivers/net/ethernet/3com/3c59x.c
@@ -813,8 +813,8 @@ module_param(global_enable_wol, int, 0);
 module_param_array(enable_wol, int, NULL, 0);
 module_param(rx_copybreak, int, 0);
 module_param(max_interrupt_work, int, 0);
-module_param(compaq_ioaddr, int, 0);
-module_param(compaq_irq, int, 0);
+module_param_hw(compaq_ioaddr, int, ioport, 0);
+module_param_hw(compaq_irq, int, irq, 0);
 module_param(compaq_device_id, int, 0);
 module_param(watchdog, int, 0);
 module_param(global_use_mmio, int, 0);
diff --git a/drivers/net/ethernet/8390/ne.c b/drivers/net/ethernet/8390/ne.c
index c063b410a163..66f47987e2a2 100644
--- a/drivers/net/ethernet/8390/ne.c
+++ b/drivers/net/ethernet/8390/ne.c
@@ -74,8 +74,8 @@ static int bad[MAX_NE_CARDS];
 static u32 ne_msg_enable;
 
 #ifdef MODULE
-module_param_array(io, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
+module_param_hw_array(io, int, ioport, NULL, 0);
+module_param_hw_array(irq, int, irq, NULL, 0);
 module_param_array(bad, int, NULL, 0);
 module_param_named(msg_enable, ne_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
 MODULE_PARM_DESC(io, "I/O base address(es),required");
diff --git a/drivers/net/ethernet/8390/smc-ultra.c b/drivers/net/ethernet/8390/smc-ultra.c
index 364b6514f65f..4e02f6a23575 100644
--- a/drivers/net/ethernet/8390/smc-ultra.c
+++ b/drivers/net/ethernet/8390/smc-ultra.c
@@ -561,8 +561,8 @@ static struct net_device *dev_ultra[MAX_ULTRA_CARDS];
 static int io[MAX_ULTRA_CARDS];
 static int irq[MAX_ULTRA_CARDS];
 
-module_param_array(io, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
+module_param_hw_array(io, int, ioport, NULL, 0);
+module_param_hw_array(irq, int, irq, NULL, 0);
 module_param_named(msg_enable, ultra_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
 MODULE_PARM_DESC(io, "I/O base address(es)");
 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
diff --git a/drivers/net/ethernet/8390/wd.c b/drivers/net/ethernet/8390/wd.c
index ad019cbc698f..6efa2722f850 100644
--- a/drivers/net/ethernet/8390/wd.c
+++ b/drivers/net/ethernet/8390/wd.c
@@ -503,10 +503,10 @@ static int irq[MAX_WD_CARDS];
 static int mem[MAX_WD_CARDS];
 static int mem_end[MAX_WD_CARDS];	/* for non std. mem size */
 
-module_param_array(io, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
-module_param_array(mem, int, NULL, 0);
-module_param_array(mem_end, int, NULL, 0);
+module_param_hw_array(io, int, ioport, NULL, 0);
+module_param_hw_array(irq, int, irq, NULL, 0);
+module_param_hw_array(mem, int, iomem, NULL, 0);
+module_param_hw_array(mem_end, int, iomem, NULL, 0);
 module_param_named(msg_enable, wd_msg_enable, uint, (S_IRUSR|S_IRGRP|S_IROTH));
 MODULE_PARM_DESC(io, "I/O base address(es)");
 MODULE_PARM_DESC(irq, "IRQ number(s) (ignored for PureData boards)");
diff --git a/drivers/net/ethernet/amd/lance.c b/drivers/net/ethernet/amd/lance.c
index 61a641f23149..12a6a93d221b 100644
--- a/drivers/net/ethernet/amd/lance.c
+++ b/drivers/net/ethernet/amd/lance.c
@@ -318,9 +318,9 @@ static int io[MAX_CARDS];
 static int dma[MAX_CARDS];
 static int irq[MAX_CARDS];
 
-module_param_array(io, int, NULL, 0);
-module_param_array(dma, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
+module_param_hw_array(io, int, ioport, NULL, 0);
+module_param_hw_array(dma, int, dma, NULL, 0);
+module_param_hw_array(irq, int, irq, NULL, 0);
 module_param(lance_debug, int, 0);
 MODULE_PARM_DESC(io, "LANCE/PCnet I/O base address(es),required");
 MODULE_PARM_DESC(dma, "LANCE/PCnet ISA DMA channel (ignored for some devices)");
diff --git a/drivers/net/ethernet/amd/ni65.c b/drivers/net/ethernet/amd/ni65.c
index 5985bf220a8d..e248d1ab3e47 100644
--- a/drivers/net/ethernet/amd/ni65.c
+++ b/drivers/net/ethernet/amd/ni65.c
@@ -1227,9 +1227,9 @@ static void set_multicast_list(struct net_device *dev)
 #ifdef MODULE
 static struct net_device *dev_ni65;
 
-module_param(irq, int, 0);
-module_param(io, int, 0);
-module_param(dma, int, 0);
+module_param_hw(irq, int, irq, 0);
+module_param_hw(io, int, ioport, 0);
+module_param_hw(dma, int, dma, 0);
 MODULE_PARM_DESC(irq, "ni6510 IRQ number (ignored for some cards)");
 MODULE_PARM_DESC(io, "ni6510 I/O base address");
 MODULE_PARM_DESC(dma, "ni6510 ISA DMA channel (ignored for some cards)");
diff --git a/drivers/net/ethernet/cirrus/cs89x0.c b/drivers/net/ethernet/cirrus/cs89x0.c
index 47384f7323ac..da5b58b853e2 100644
--- a/drivers/net/ethernet/cirrus/cs89x0.c
+++ b/drivers/net/ethernet/cirrus/cs89x0.c
@@ -1704,12 +1704,12 @@ static int use_dma;			/* These generate unused var warnings if ALLOW_DMA = 0 */
 static int dma;
 static int dmasize = 16;		/* or 64 */
 
-module_param(io, int, 0);
-module_param(irq, int, 0);
+module_param_hw(io, int, ioport, 0);
+module_param_hw(irq, int, irq, 0);
 module_param(debug, int, 0);
 module_param_string(media, media, sizeof(media), 0);
 module_param(duplex, int, 0);
-module_param(dma , int, 0);
+module_param_hw(dma , int, dma, 0);
 module_param(dmasize , int, 0);
 module_param(use_dma , int, 0);
 MODULE_PARM_DESC(io, "cs89x0 I/O base address");
diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c
index df4a871df633..fd6bcf024729 100644
--- a/drivers/net/ethernet/dec/tulip/de4x5.c
+++ b/drivers/net/ethernet/dec/tulip/de4x5.c
@@ -1015,7 +1015,7 @@ static int     compact_infoblock(struct net_device *dev, u_char count, u_char *p
 
 static int io=0x0;/* EDIT THIS LINE FOR YOUR CONFIGURATION IF NEEDED        */
 
-module_param(io, int, 0);
+module_param_hw(io, int, ioport, 0);
 module_param(de4x5_debug, int, 0);
 module_param(dec_only, int, 0);
 module_param(args, charp, 0);
diff --git a/drivers/net/ethernet/hp/hp100.c b/drivers/net/ethernet/hp/hp100.c
index 1a31bee6e728..5673b071e39d 100644
--- a/drivers/net/ethernet/hp/hp100.c
+++ b/drivers/net/ethernet/hp/hp100.c
@@ -2966,7 +2966,7 @@ MODULE_DESCRIPTION("HP CASCADE Architecture Driver for 100VG-AnyLan Network Adap
 #define HP100_DEVICES 5
 /* Parameters set by insmod */
 static int hp100_port[HP100_DEVICES] = { 0, [1 ... (HP100_DEVICES-1)] = -1 };
-module_param_array(hp100_port, int, NULL, 0);
+module_param_hw_array(hp100_port, int, ioport, NULL, 0);
 
 /* List of devices */
 static struct net_device *hp100_devlist[HP100_DEVICES];
diff --git a/drivers/net/ethernet/realtek/atp.c b/drivers/net/ethernet/realtek/atp.c
index 9bcd4aefc9c5..bed34684994f 100644
--- a/drivers/net/ethernet/realtek/atp.c
+++ b/drivers/net/ethernet/realtek/atp.c
@@ -151,8 +151,8 @@ MODULE_LICENSE("GPL");
 
 module_param(max_interrupt_work, int, 0);
 module_param(debug, int, 0);
-module_param_array(io, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
+module_param_hw_array(io, int, ioport, NULL, 0);
+module_param_hw_array(irq, int, irq, NULL, 0);
 module_param_array(xcvr, int, NULL, 0);
 MODULE_PARM_DESC(max_interrupt_work, "ATP maximum events handled per interrupt");
 MODULE_PARM_DESC(debug, "ATP debug level (0-7)");
diff --git a/drivers/net/ethernet/smsc/smc9194.c b/drivers/net/ethernet/smsc/smc9194.c
index c8d84679ede7..d3bb2ba51f40 100644
--- a/drivers/net/ethernet/smsc/smc9194.c
+++ b/drivers/net/ethernet/smsc/smc9194.c
@@ -1501,8 +1501,8 @@ static void smc_set_multicast_list(struct net_device *dev)
 static struct net_device *devSMC9194;
 MODULE_LICENSE("GPL");
 
-module_param(io, int, 0);
-module_param(irq, int, 0);
+module_param_hw(io, int, ioport, 0);
+module_param_hw(irq, int, irq, 0);
 module_param(ifport, int, 0);
 MODULE_PARM_DESC(io, "SMC 99194 I/O base address");
 MODULE_PARM_DESC(irq, "SMC 99194 IRQ number");