Merge remote-tracking branch 'airlied/drm-fixes' into drm-intel-next-queued

Back-merge from drm-fixes into drm-intel-next to sort out two things:

- interlaced support: -fixes contains a bugfix to correctly clear
  interlaced configuration bits in case the bios sets up an interlaced
  mode and we want to set up the progressive mode (current kernels
  don't support interlaced). The actual feature work to support
  interlaced depends upon (and conflicts with) this bugfix.

- forcewake voodoo to workaround missed IRQ issues: -fixes only enabled
  this for ivybridge, but some recent bug reports indicate that we
  need this on Sandybridge, too. But in a slightly different flavour
  and with other fixes and reworks on top. Additionally there are some
  forcewake cleanup patches heading to -next that would conflict with
  currrent -fixes.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 159 insertions, 117 deletions

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index f936d1fa969d..e8c969577768 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -28,6 +28,7 @@ typedef Elf64_Addr	kernel_ulong_t;
 #endif
 
 #include <ctype.h>
+#include <stdbool.h>
 
 typedef uint32_t	__u32;
 typedef uint16_t	__u16;
@@ -38,6 +39,35 @@ typedef unsigned char	__u8;
  * we handle those differences explicitly below */
 #include "../../include/linux/mod_devicetable.h"
 
+/* This array collects all instances that use the generic do_table */
+struct devtable {
+	const char *device_id; /* name of table, __mod_<name>_device_table. */
+	unsigned long id_size;
+	void *function;
+};
+
+/* We construct a table of pointers in an ELF section (pointers generally
+ * go unpadded by gcc).  ld creates boundary syms for us. */
+extern struct devtable *__start___devtable[], *__stop___devtable[];
+#define ___cat(a,b) a ## b
+#define __cat(a,b) ___cat(a,b)
+
+#if __GNUC__ == 3 && __GNUC_MINOR__ < 3
+# define __used			__attribute__((__unused__))
+#else
+# define __used			__attribute__((__used__))
+#endif
+
+/* Add a table entry.  We test function type matches while we're here. */
+#define ADD_TO_DEVTABLE(device_id, type, function) \
+	static struct devtable __cat(devtable,__LINE__) = {	\
+		device_id + 0*sizeof((function)((const char *)NULL,	\
+						(type *)NULL,		\
+						(char *)NULL)),		\
+		sizeof(type), (function) };				\
+	static struct devtable *__attribute__((section("__devtable"))) \
+		__used __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
+
 #define ADD(str, sep, cond, field)                              \
 do {                                                            \
         strcat(str, sep);                                       \
@@ -289,6 +319,7 @@ static int do_hid_entry(const char *filename,
 
 	return 1;
 }
+ADD_TO_DEVTABLE("hid", struct hid_device_id, do_hid_entry);
 
 /* Looks like: ieee1394:venNmoNspNverN */
 static int do_ieee1394_entry(const char *filename,
@@ -313,6 +344,7 @@ static int do_ieee1394_entry(const char *filename,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("ieee1394", struct ieee1394_device_id, do_ieee1394_entry);
 
 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
 static int do_pci_entry(const char *filename,
@@ -356,6 +388,7 @@ static int do_pci_entry(const char *filename,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("pci", struct pci_device_id, do_pci_entry);
 
 /* looks like: "ccw:tNmNdtNdmN" */
 static int do_ccw_entry(const char *filename,
@@ -379,6 +412,7 @@ static int do_ccw_entry(const char *filename,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("ccw", struct ccw_device_id, do_ccw_entry);
 
 /* looks like: "ap:tN" */
 static int do_ap_entry(const char *filename,
@@ -387,6 +421,7 @@ static int do_ap_entry(const char *filename,
 	sprintf(alias, "ap:t%02X*", id->dev_type);
 	return 1;
 }
+ADD_TO_DEVTABLE("ap", struct ap_device_id, do_ap_entry);
 
 /* looks like: "css:tN" */
 static int do_css_entry(const char *filename,
@@ -395,6 +430,7 @@ static int do_css_entry(const char *filename,
 	sprintf(alias, "css:t%01X", id->type);
 	return 1;
 }
+ADD_TO_DEVTABLE("css", struct css_device_id, do_css_entry);
 
 /* Looks like: "serio:tyNprNidNexN" */
 static int do_serio_entry(const char *filename,
@@ -414,6 +450,7 @@ static int do_serio_entry(const char *filename,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("serio", struct serio_device_id, do_serio_entry);
 
 /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
 static int do_acpi_entry(const char *filename,
@@ -422,6 +459,7 @@ static int do_acpi_entry(const char *filename,
 	sprintf(alias, "acpi*:%s:*", id->id);
 	return 1;
 }
+ADD_TO_DEVTABLE("acpi", struct acpi_device_id, do_acpi_entry);
 
 /* looks like: "pnp:dD" */
 static void do_pnp_device_entry(void *symval, unsigned long size,
@@ -544,8 +582,7 @@ static int do_pcmcia_entry(const char *filename,
 	add_wildcard(alias);
        return 1;
 }
-
-
+ADD_TO_DEVTABLE("pcmcia", struct pcmcia_device_id, do_pcmcia_entry);
 
 static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
 {
@@ -568,6 +605,7 @@ static int do_of_entry (const char *filename, struct of_device_id *of, char *ali
     add_wildcard(alias);
     return 1;
 }
+ADD_TO_DEVTABLE("of", struct of_device_id, do_of_entry);
 
 static int do_vio_entry(const char *filename, struct vio_device_id *vio,
 		char *alias)
@@ -585,6 +623,7 @@ static int do_vio_entry(const char *filename, struct vio_device_id *vio,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("vio", struct vio_device_id, do_vio_entry);
 
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
@@ -640,6 +679,7 @@ static int do_input_entry(const char *filename, struct input_device_id *id,
 		do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
 	return 1;
 }
+ADD_TO_DEVTABLE("input", struct input_device_id, do_input_entry);
 
 static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
 		char *alias)
@@ -650,6 +690,7 @@ static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
 		strcat(alias, "*");
 	return 1;
 }
+ADD_TO_DEVTABLE("eisa", struct eisa_device_id, do_eisa_entry);
 
 /* Looks like: parisc:tNhvNrevNsvN */
 static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
@@ -669,6 +710,7 @@ static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("parisc", struct parisc_device_id, do_parisc_entry);
 
 /* Looks like: sdio:cNvNdN. */
 static int do_sdio_entry(const char *filename,
@@ -685,6 +727,7 @@ static int do_sdio_entry(const char *filename,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("sdio", struct sdio_device_id, do_sdio_entry);
 
 /* Looks like: ssb:vNidNrevN. */
 static int do_ssb_entry(const char *filename,
@@ -701,6 +744,7 @@ static int do_ssb_entry(const char *filename,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("ssb", struct ssb_device_id, do_ssb_entry);
 
 /* Looks like: bcma:mNidNrevNclN. */
 static int do_bcma_entry(const char *filename,
@@ -719,6 +763,7 @@ static int do_bcma_entry(const char *filename,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("bcma", struct bcma_device_id, do_bcma_entry);
 
 /* Looks like: virtio:dNvN */
 static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
@@ -734,6 +779,7 @@ static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
 	add_wildcard(alias);
 	return 1;
 }
+ADD_TO_DEVTABLE("virtio", struct virtio_device_id, do_virtio_entry);
 
 /*
  * Looks like: vmbus:guid
@@ -755,6 +801,7 @@ static int do_vmbus_entry(const char *filename, struct hv_vmbus_device_id *id,
 
 	return 1;
 }
+ADD_TO_DEVTABLE("vmbus", struct hv_vmbus_device_id, do_vmbus_entry);
 
 /* Looks like: i2c:S */
 static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
@@ -764,6 +811,7 @@ static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
 
 	return 1;
 }
+ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry);
 
 /* Looks like: spi:S */
 static int do_spi_entry(const char *filename, struct spi_device_id *id,
@@ -773,6 +821,7 @@ static int do_spi_entry(const char *filename, struct spi_device_id *id,
 
 	return 1;
 }
+ADD_TO_DEVTABLE("spi", struct spi_device_id, do_spi_entry);
 
 static const struct dmifield {
 	const char *prefix;
@@ -827,6 +876,7 @@ static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
 	strcat(alias, ":");
 	return 1;
 }
+ADD_TO_DEVTABLE("dmi", struct dmi_system_id, do_dmi_entry);
 
 static int do_platform_entry(const char *filename,
 			     struct platform_device_id *id, char *alias)
@@ -834,6 +884,7 @@ static int do_platform_entry(const char *filename,
 	sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name);
 	return 1;
 }
+ADD_TO_DEVTABLE("platform", struct platform_device_id, do_platform_entry);
 
 static int do_mdio_entry(const char *filename,
 			 struct mdio_device_id *id, char *alias)
@@ -856,6 +907,7 @@ static int do_mdio_entry(const char *filename,
 
 	return 1;
 }
+ADD_TO_DEVTABLE("mdio", struct mdio_device_id, do_mdio_entry);
 
 /* Looks like: zorro:iN. */
 static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
@@ -866,6 +918,7 @@ static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
 	ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id);
 	return 1;
 }
+ADD_TO_DEVTABLE("zorro", struct zorro_device_id, do_zorro_entry);
 
 /* looks like: "pnp:dD" */
 static int do_isapnp_entry(const char *filename,
@@ -879,16 +932,84 @@ static int do_isapnp_entry(const char *filename,
 		(id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f);
 	return 1;
 }
+ADD_TO_DEVTABLE("isa", struct isapnp_device_id, do_isapnp_entry);
 
-/* Ignore any prefix, eg. some architectures prepend _ */
-static inline int sym_is(const char *symbol, const char *name)
+/*
+ * Append a match expression for a single masked hex digit.
+ * outp points to a pointer to the character at which to append.
+ *	*outp is updated on return to point just after the appended text,
+ *	to facilitate further appending.
+ */
+static void append_nibble_mask(char **outp,
+			       unsigned int nibble, unsigned int mask)
 {
-	const char *match;
+	char *p = *outp;
+	unsigned int i;
 
-	match = strstr(symbol, name);
-	if (!match)
-		return 0;
-	return match[strlen(name)] == '\0';
+	switch (mask) {
+	case 0:
+		*p++ = '?';
+		break;
+
+	case 0xf:
+		p += sprintf(p, "%X",  nibble);
+		break;
+
+	default:
+		/*
+		 * Dumbly emit a match pattern for all possible matching
+		 * digits.  This could be improved in some cases using ranges,
+		 * but it has the advantage of being trivially correct, and is
+		 * often optimal.
+		 */
+		*p++ = '[';
+		for (i = 0; i < 0x10; i++)
+			if ((i & mask) == nibble)
+				p += sprintf(p, "%X", i);
+		*p++ = ']';
+	}
+
+	/* Ensure that the string remains NUL-terminated: */
+	*p = '\0';
+
+	/* Advance the caller's end-of-string pointer: */
+	*outp = p;
+}
+
+/*
+ * looks like: "amba:dN"
+ *
+ * N is exactly 8 digits, where each is an upper-case hex digit, or
+ *	a ? or [] pattern matching exactly one digit.
+ */
+static int do_amba_entry(const char *filename,
+			 struct amba_id *id, char *alias)
+{
+	unsigned int digit;
+	char *p = alias;
+
+	if ((id->id & id->mask) != id->id)
+		fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
+		      "id=0x%08X, mask=0x%08X.  Please fix this driver.\n",
+		      filename, id->id, id->mask);
+
+	p += sprintf(alias, "amba:d");
+	for (digit = 0; digit < 8; digit++)
+		append_nibble_mask(&p,
+				   (id->id >> (4 * (7 - digit))) & 0xf,
+				   (id->mask >> (4 * (7 - digit))) & 0xf);
+
+	return 1;
+}
+ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry);
+
+/* Does namelen bytes of name exactly match the symbol? */
+static bool sym_is(const char *name, unsigned namelen, const char *symbol)
+{
+	if (namelen != strlen(symbol))
+		return false;
+
+	return memcmp(name, symbol, namelen) == 0;
 }
 
 static void do_table(void *symval, unsigned long size,
@@ -921,11 +1042,25 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
 {
 	void *symval;
 	char *zeros = NULL;
+	const char *name;
+	unsigned int namelen;
 
 	/* We're looking for a section relative symbol */
 	if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
 		return;
 
+	/* All our symbols are of form <prefix>__mod_XXX_device_table. */
+	name = strstr(symname, "__mod_");
+	if (!name)
+		return;
+	name += strlen("__mod_");
+	namelen = strlen(name);
+	if (namelen < strlen("_device_table"))
+		return;
+	if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
+		return;
+	namelen -= strlen("_device_table");
+
 	/* Handle all-NULL symbols allocated into .bss */
 	if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
 		zeros = calloc(1, sym->st_size);
@@ -936,117 +1071,24 @@ void handle_moddevtable(struct module *mod, struct elf_info *info,
 			+ sym->st_value;
 	}
 
-	if (sym_is(symname, "__mod_pci_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct pci_device_id), "pci",
-			 do_pci_entry, mod);
-	else if (sym_is(symname, "__mod_usb_device_table"))
-		/* special case to handle bcdDevice ranges */
+	/* First handle the "special" cases */
+	if (sym_is(name, namelen, "usb"))
 		do_usb_table(symval, sym->st_size, mod);
-	else if (sym_is(symname, "__mod_hid_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct hid_device_id), "hid",
-			 do_hid_entry, mod);
-	else if (sym_is(symname, "__mod_ieee1394_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct ieee1394_device_id), "ieee1394",
-			 do_ieee1394_entry, mod);
-	else if (sym_is(symname, "__mod_ccw_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct ccw_device_id), "ccw",
-			 do_ccw_entry, mod);
-	else if (sym_is(symname, "__mod_ap_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct ap_device_id), "ap",
-			 do_ap_entry, mod);
-	else if (sym_is(symname, "__mod_css_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct css_device_id), "css",
-			 do_css_entry, mod);
-	else if (sym_is(symname, "__mod_serio_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct serio_device_id), "serio",
-			 do_serio_entry, mod);
-	else if (sym_is(symname, "__mod_acpi_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct acpi_device_id), "acpi",
-			 do_acpi_entry, mod);
-	else if (sym_is(symname, "__mod_pnp_device_table"))
+	else if (sym_is(name, namelen, "pnp"))
 		do_pnp_device_entry(symval, sym->st_size, mod);
-	else if (sym_is(symname, "__mod_pnp_card_device_table"))
+	else if (sym_is(name, namelen, "pnp_card"))
 		do_pnp_card_entries(symval, sym->st_size, mod);
-	else if (sym_is(symname, "__mod_pcmcia_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct pcmcia_device_id), "pcmcia",
-			 do_pcmcia_entry, mod);
-        else if (sym_is(symname, "__mod_of_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct of_device_id), "of",
-			 do_of_entry, mod);
-        else if (sym_is(symname, "__mod_vio_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct vio_device_id), "vio",
-			 do_vio_entry, mod);
-	else if (sym_is(symname, "__mod_input_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct input_device_id), "input",
-			 do_input_entry, mod);
-	else if (sym_is(symname, "__mod_eisa_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct eisa_device_id), "eisa",
-			 do_eisa_entry, mod);
-	else if (sym_is(symname, "__mod_parisc_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct parisc_device_id), "parisc",
-			 do_parisc_entry, mod);
-	else if (sym_is(symname, "__mod_sdio_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct sdio_device_id), "sdio",
-			 do_sdio_entry, mod);
-	else if (sym_is(symname, "__mod_ssb_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct ssb_device_id), "ssb",
-			 do_ssb_entry, mod);
-	else if (sym_is(symname, "__mod_bcma_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct bcma_device_id), "bcma",
-			 do_bcma_entry, mod);
-	else if (sym_is(symname, "__mod_virtio_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct virtio_device_id), "virtio",
-			 do_virtio_entry, mod);
-	else if (sym_is(symname, "__mod_vmbus_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct hv_vmbus_device_id), "vmbus",
-			 do_vmbus_entry, mod);
-	else if (sym_is(symname, "__mod_i2c_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct i2c_device_id), "i2c",
-			 do_i2c_entry, mod);
-	else if (sym_is(symname, "__mod_spi_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct spi_device_id), "spi",
-			 do_spi_entry, mod);
-	else if (sym_is(symname, "__mod_dmi_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct dmi_system_id), "dmi",
-			 do_dmi_entry, mod);
-	else if (sym_is(symname, "__mod_platform_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct platform_device_id), "platform",
-			 do_platform_entry, mod);
-	else if (sym_is(symname, "__mod_mdio_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct mdio_device_id), "mdio",
-			 do_mdio_entry, mod);
-	else if (sym_is(symname, "__mod_zorro_device_table"))
-		do_table(symval, sym->st_size,
-			 sizeof(struct zorro_device_id), "zorro",
-			 do_zorro_entry, mod);
-	else if (sym_is(symname, "__mod_isapnp_device_table"))
-		do_table(symval, sym->st_size,
-			sizeof(struct isapnp_device_id), "isa",
-			do_isapnp_entry, mod);
+	else {
+		struct devtable **p;
+
+		for (p = __start___devtable; p < __stop___devtable; p++) {
+			if (sym_is(name, namelen, (*p)->device_id)) {
+				do_table(symval, sym->st_size, (*p)->id_size,
+					 (*p)->device_id, (*p)->function, mod);
+				break;
+			}
+		}
+	}
 	free(zeros);
 }