[PATCH 12/14] nubus: Rename struct nubus_dev

Finn Thain
2017-11-11T06:14:15Z

It is misleading to use "dev" to mean a functional resource. And
in adopting the Linux Driver Model, struct nubus_board will embed a
struct device. Drivers will then bind with boards, not with functional
resources.

Rename struct nubus_dev as struct nubus_functional_resource. This is
the vendor's terminology and avoids confusion.

Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
drivers/net/ethernet/8390/mac8390.c | 12 ++--
drivers/net/ethernet/natsemi/macsonic.c | 4 +-
drivers/nubus/nubus.c | 105 ++++++++++++++++----------------
drivers/nubus/proc.c | 15 ++---
drivers/video/fbdev/macfb.c | 2 +-
include/linux/nubus.h | 31 +++++-----
6 files changed, 86 insertions(+), 83 deletions(-)

diff --git a/drivers/net/ethernet/8390/mac8390.c b/drivers/net/ethernet/8390/mac8390.c
index 9497f18eaba0..0367c9ada7c6 100644
--- a/drivers/net/ethernet/8390/mac8390.c
+++ b/drivers/net/ethernet/8390/mac8390.c
@@ -123,7 +123,8 @@ enum mac8390_access {
};

extern int mac8390_memtest(struct net_device *dev);
-static int mac8390_initdev(struct net_device *dev, struct nubus_dev *ndev,
+static int mac8390_initdev(struct net_device *dev,
+ struct nubus_functional_resource *ndev,
enum mac8390_type type);

static int mac8390_open(struct net_device *dev);
@@ -169,7 +170,7 @@ static void word_memcpy_tocard(unsigned long tp, const void *fp, int count);
static void word_memcpy_fromcard(void *tp, unsigned long fp, int count);
static u32 mac8390_msg_enable;

-static enum mac8390_type __init mac8390_ident(struct nubus_dev *dev)
+static enum mac8390_type __init mac8390_ident(struct nubus_functional_resource *dev)
{
switch (dev->dr_sw) {
case NUBUS_DRSW_3COM:
@@ -289,7 +290,8 @@ static int __init mac8390_memsize(unsigned long membase)
return i * 0x1000;
}

-static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
+static bool __init mac8390_init(struct net_device *dev,
+ struct nubus_functional_resource *ndev,
enum mac8390_type cardtype)
{
struct nubus_dir dir;
@@ -394,7 +396,7 @@ static bool __init mac8390_init(struct net_device *dev, struct nubus_dev *ndev,
struct net_device * __init mac8390_probe(int unit)
{
struct net_device *dev;
- struct nubus_dev *ndev = NULL;
+ struct nubus_functional_resource *ndev = NULL;
int err = -ENODEV;
struct ei_device *ei_local;

@@ -489,7 +491,7 @@ static const struct net_device_ops mac8390_netdev_ops = {
};

static int __init mac8390_initdev(struct net_device *dev,
- struct nubus_dev *ndev,
+ struct nubus_functional_resource *ndev,
enum mac8390_type type)
{
static u32 fwrd4_offsets[16] = {
diff --git a/drivers/net/ethernet/natsemi/macsonic.c b/drivers/net/ethernet/natsemi/macsonic.c
index 3ca6ae7caf55..963c96f6eca7 100644
--- a/drivers/net/ethernet/natsemi/macsonic.c
+++ b/drivers/net/ethernet/natsemi/macsonic.c
@@ -427,7 +427,7 @@ static int mac_nubus_sonic_ethernet_addr(struct net_device *dev,
return 0;
}

-static int macsonic_ident(struct nubus_dev *ndev)
+static int macsonic_ident(struct nubus_functional_resource *ndev)
{
if (ndev->dr_hw == NUBUS_DRHW_ASANTE_LC &&
ndev->dr_sw == NUBUS_DRSW_SONIC_LC)
@@ -455,7 +455,7 @@ static int macsonic_ident(struct nubus_dev *ndev)
static int mac_nubus_sonic_probe(struct net_device *dev)
{
static int slots;
- struct nubus_dev* ndev = NULL;
+ struct nubus_functional_resource *ndev = NULL;
struct sonic_local* lp = netdev_priv(dev);
unsigned long base_addr, prom_addr;
u16 sonic_dcr;
diff --git a/drivers/nubus/nubus.c b/drivers/nubus/nubus.c
index 16cbdd45dbbc..cc9dba4b4f01 100644
--- a/drivers/nubus/nubus.c
+++ b/drivers/nubus/nubus.c
@@ -31,7 +31,7 @@

/* Globals */

-struct nubus_dev *nubus_devices;
+struct nubus_functional_resource *nubus_func_rsrcs;
struct nubus_board *nubus_boards;

/* Meaning of "bytelanes":
@@ -228,12 +228,12 @@ int nubus_get_root_dir(const struct nubus_board *board,
EXPORT_SYMBOL(nubus_get_root_dir);

/* This is a slyly renamed version of the above */
-int nubus_get_func_dir(const struct nubus_dev *dev,
+int nubus_get_func_dir(const struct nubus_functional_resource *fres,
struct nubus_dir *dir)
{
- dir->ptr = dir->base = dev->directory;
+ dir->ptr = dir->base = fres->directory;
dir->done = 0;
- dir->mask = dev->board->lanes;
+ dir->mask = fres->board->lanes;
return 0;
}
EXPORT_SYMBOL(nubus_get_func_dir);
@@ -306,11 +306,12 @@ EXPORT_SYMBOL(nubus_rewinddir);

/* Driver interface functions, more or less like in pci.c */

-struct nubus_dev*
+struct nubus_functional_resource*
nubus_find_type(unsigned short category, unsigned short type,
- const struct nubus_dev *from)
+ const struct nubus_functional_resource *from)
{
- struct nubus_dev *itor = from ? from->next : nubus_devices;
+ struct nubus_functional_resource *itor = from ? from->next
+ : nubus_func_rsrcs;

while (itor) {
if (itor->category == category && itor->type == type)
@@ -321,10 +322,11 @@ nubus_find_type(unsigned short category, unsigned short type,
}
EXPORT_SYMBOL(nubus_find_type);

-struct nubus_dev*
-nubus_find_slot(unsigned int slot, const struct nubus_dev *from)
+struct nubus_functional_resource*
+nubus_find_slot(unsigned int slot, const struct nubus_functional_resource *from)
{
- struct nubus_dev *itor = from ? from->next : nubus_devices;
+ struct nubus_functional_resource *itor = from ? from->next
+ : nubus_func_rsrcs;

while (itor) {
if (itor->board->slot == slot)
@@ -403,19 +405,19 @@ static int __init nubus_get_display_vidmode(struct nubus_board *board,
return 0;
}

-static int __init nubus_get_display_resource(struct nubus_dev *dev,
+static int __init nubus_get_display_resource(struct nubus_functional_resource *fres,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
switch (ent->type) {
case NUBUS_RESID_GAMMADIR:
pr_debug(" gamma directory offset: 0x%06x\n", ent->data);
- nubus_get_block_rsrc_dir(dev->board, procdir, ent);
+ nubus_get_block_rsrc_dir(fres->board, procdir, ent);
break;
case 0x0080 ... 0x0085:
pr_debug(" mode 0x%02x info offset: 0x%06x\n",
ent->type, ent->data);
- nubus_get_display_vidmode(dev->board, procdir, ent);
+ nubus_get_display_vidmode(fres->board, procdir, ent);
break;
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
@@ -425,7 +427,7 @@ static int __init nubus_get_display_resource(struct nubus_dev *dev,
return 0;
}

-static int __init nubus_get_network_resource(struct nubus_dev *dev,
+static int __init nubus_get_network_resource(struct nubus_functional_resource *fres,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
@@ -447,7 +449,7 @@ static int __init nubus_get_network_resource(struct nubus_dev *dev,
return 0;
}

-static int __init nubus_get_cpu_resource(struct nubus_dev *dev,
+static int __init nubus_get_cpu_resource(struct nubus_functional_resource *fres,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
@@ -480,19 +482,19 @@ static int __init nubus_get_cpu_resource(struct nubus_dev *dev,
return 0;
}

-static int __init nubus_get_private_resource(struct nubus_dev *dev,
+static int __init nubus_get_private_resource(struct nubus_functional_resource *fres,
struct proc_dir_entry *procdir,
const struct nubus_dirent *ent)
{
- switch (dev->category) {
+ switch (fres->category) {
case NUBUS_CAT_DISPLAY:
- nubus_get_display_resource(dev, procdir, ent);
+ nubus_get_display_resource(fres, procdir, ent);
break;
case NUBUS_CAT_NETWORK:
- nubus_get_network_resource(dev, procdir, ent);
+ nubus_get_network_resource(fres, procdir, ent);
break;
case NUBUS_CAT_CPU:
- nubus_get_cpu_resource(dev, procdir, ent);
+ nubus_get_cpu_resource(fres, procdir, ent);
break;
default:
pr_debug(" unknown resource 0x%02x, data 0x%06x\n",
@@ -502,24 +504,25 @@ static int __init nubus_get_private_resource(struct nubus_dev *dev,
return 0;
}

-static struct nubus_dev * __init
+static struct nubus_functional_resource * __init
nubus_get_functional_resource(struct nubus_board *board, int slot,
const struct nubus_dirent *parent)
{
struct nubus_dir dir;
struct nubus_dirent ent;
- struct nubus_dev *dev;
+ struct nubus_functional_resource *fres;

pr_debug(" Functional resource 0x%02x:\n", parent->type);
nubus_get_subdir(parent, &dir);
dir.procdir = nubus_proc_add_rsrc_dir(board->procdir, parent, board);

/* Actually we should probably panic if this fails */
- if ((dev = kzalloc(sizeof(*dev), GFP_ATOMIC)) == NULL)
+ fres = kzalloc(sizeof(*fres), GFP_ATOMIC);
+ if (!fres)
return NULL;
- dev->resid = parent->type;
- dev->directory = dir.base;
- dev->board = board;
+ fres->resid = parent->type;
+ fres->directory = dir.base;
+ fres->board = board;

while (nubus_readdir(&dir, &ent) != -1) {
switch (ent.type) {
@@ -528,10 +531,10 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
unsigned short nbtdata[4];

nubus_get_rsrc_mem(nbtdata, &ent, 8);
- dev->category = nbtdata[0];
- dev->type = nbtdata[1];
- dev->dr_sw = nbtdata[2];
- dev->dr_hw = nbtdata[3];
+ fres->category = nbtdata[0];
+ fres->type = nbtdata[1];
+ fres->dr_sw = nbtdata[2];
+ fres->dr_hw = nbtdata[3];
pr_debug(" type: [cat 0x%x type 0x%x sw 0x%x hw 0x%x]\n",
nbtdata[0], nbtdata[1], nbtdata[2], nbtdata[3]);
nubus_proc_add_rsrc_mem(dir.procdir, &ent, 8);
@@ -589,11 +592,11 @@ nubus_get_functional_resource(struct nubus_board *board, int slot,
default:
/* Local/Private resources have their own
function */
- nubus_get_private_resource(dev, dir.procdir, &ent);
+ nubus_get_private_resource(fres, dir.procdir, &ent);
}
}

- return dev;
+ return fres;
}

/* This is *really* cool. */
@@ -727,7 +730,6 @@ static int __init nubus_get_board_resource(struct nubus_board *board, int slot,
return 0;
}

-/* Add a board (might be many devices) to the list */
static struct nubus_board * __init nubus_add_board(int slot, int bytelanes)
{
struct nubus_board *board;
@@ -799,10 +801,11 @@ static struct nubus_board * __init nubus_add_board(int slot, int bytelanes)
pr_debug("Slot %X:\n", slot);

/* Each slot should have one board resource and any number of
- functional resources. So we'll fill in some fields in the
- struct nubus_board from the board resource, then walk down
- the list of functional resources, spinning out a nubus_dev
- for each of them. */
+ * functional resources. So we'll fill in some fields in the
+ * struct nubus_board from the board resource, then walk down
+ * the list of functional resources, spinning out a
+ * nubus_functional_resource for each of them.
+ */
if (nubus_readdir(&dir, &ent) == -1) {
/* We can't have this! */
pr_err("Slot %X: Board resource not found!\n", slot);
@@ -817,32 +820,32 @@ static struct nubus_board * __init nubus_add_board(int slot, int bytelanes)
nubus_get_board_resource(board, slot, &ent);

while (nubus_readdir(&dir, &ent) != -1) {
- struct nubus_dev *dev;
- struct nubus_dev **devp;
+ struct nubus_functional_resource *fres;
+ struct nubus_functional_resource **fresp;

- dev = nubus_get_functional_resource(board, slot, &ent);
- if (dev == NULL)
+ fres = nubus_get_functional_resource(board, slot, &ent);
+ if (fres == NULL)
continue;

/* Resources should appear in ascending ID order. This sanity
* check prevents duplicate resource IDs.
*/
- if (dev->resid <= prev_resid) {
- kfree(dev);
+ if (fres->resid <= prev_resid) {
+ kfree(fres);
continue;
}
- prev_resid = dev->resid;
+ prev_resid = fres->resid;

/* We zeroed this out above */
- if (board->first_dev == NULL)
- board->first_dev = dev;
+ if (board->first_func_rsrc == NULL)
+ board->first_func_rsrc = fres;

- /* Put it on the global NuBus device chain. Keep entries in order. */
- for (devp = &nubus_devices; *devp != NULL;
- devp = &((*devp)->next))
+ /* Put it on the func. resource list. Keep entries in order. */
+ for (fresp = &nubus_func_rsrcs; *fresp != NULL;
+ fresp = &((*fresp)->next))
/* spin */;
- *devp = dev;
- dev->next = NULL;
+ *fresp = fres;
+ fres->next = NULL;
}

/* Put it on the global NuBus board chain. Keep entries in order. */
diff --git a/drivers/nubus/proc.c b/drivers/nubus/proc.c
index 5877f77040f6..7086989bdff9 100644
--- a/drivers/nubus/proc.c
+++ b/drivers/nubus/proc.c
@@ -35,17 +35,14 @@
static int
nubus_devices_proc_show(struct seq_file *m, void *v)
{
- struct nubus_dev *dev = nubus_devices;
+ struct nubus_functional_resource *frsrc = nubus_func_rsrcs;

- while (dev) {
+ while (frsrc) {
seq_printf(m, "%x\t%04x %04x %04x %04x",
- dev->board->slot,
- dev->category,
- dev->type,
- dev->dr_sw,
- dev->dr_hw);
- seq_printf(m, "\t%08lx\n", dev->board->slot_addr);
- dev = dev->next;
+ frsrc->board->slot, frsrc->category, frsrc->type,
+ frsrc->dr_sw, frsrc->dr_hw);
+ seq_printf(m, "\t%08lx\n", frsrc->board->slot_addr);
+ frsrc = frsrc->next;
}
return 0;
}
diff --git a/drivers/video/fbdev/macfb.c b/drivers/video/fbdev/macfb.c
index cda7587cbc86..303bcc0d1f4c 100644
--- a/drivers/video/fbdev/macfb.c
+++ b/drivers/video/fbdev/macfb.c
@@ -556,7 +556,7 @@ static void __init iounmap_macfb(void)
static int __init macfb_init(void)
{
int video_cmap_len, video_is_nubus = 0;
- struct nubus_dev* ndev = NULL;
+ struct nubus_functional_resource *ndev = NULL;
char *option = NULL;
int err;

diff --git a/include/linux/nubus.h b/include/linux/nubus.h
index 44576613d4a0..ede0727c1cf8 100644
--- a/include/linux/nubus.h
+++ b/include/linux/nubus.h
@@ -32,7 +32,7 @@ struct nubus_dirent {

struct nubus_board {
struct nubus_board *next;
- struct nubus_dev *first_dev;
+ struct nubus_functional_resource *first_func_rsrc;

/* Only 9-E actually exist, though 0-8 are also theoretically
possible, and 0 is a special case which represents the
@@ -61,11 +61,11 @@ struct nubus_board {
struct proc_dir_entry *procdir;
};

-struct nubus_dev {
- /* Next link in device list */
- struct nubus_dev *next;
+struct nubus_functional_resource {
+ /* Next link in list */
+ struct nubus_functional_resource *next;

- /* The functional resource ID of this device */
+ /* The functional resource ID */
unsigned char resid;
/* These are mostly here for convenience; we could always read
them from the ROMs if we wanted to */
@@ -80,8 +80,8 @@ struct nubus_dev {
struct nubus_board *board;
};

-/* This is all NuBus devices (used to find devices later on) */
-extern struct nubus_dev *nubus_devices;
+/* This is all NuBus functional resources (used to find devices later on) */
+extern struct nubus_functional_resource *nubus_func_rsrcs;
/* This is all NuBus cards */
extern struct nubus_board *nubus_boards;

@@ -114,13 +114,14 @@ static inline void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
const struct nubus_dirent *ent) {}
#endif

-/* If we need more precision we can add some more of these */
-struct nubus_dev *nubus_find_type(unsigned short category,
- unsigned short type,
- const struct nubus_dev *from);
-/* Might have more than one device in a slot, you know... */
-struct nubus_dev *nubus_find_slot(unsigned int slot,
- const struct nubus_dev *from);
+struct nubus_functional_resource *
+nubus_find_type(unsigned short category,
+ unsigned short type,
+ const struct nubus_functional_resource *from);
+
+struct nubus_functional_resource *
+nubus_find_slot(unsigned int slot,
+ const struct nubus_functional_resource *from);

/* These are somewhat more NuBus-specific. They all return 0 for
success and -1 for failure, as you'd expect. */
@@ -133,7 +134,7 @@ int nubus_get_root_dir(const struct nubus_board *board,
int nubus_get_board_dir(const struct nubus_board* board,
struct nubus_dir* dir);
/* The functional directory */
-int nubus_get_func_dir(const struct nubus_dev *dev,
+int nubus_get_func_dir(const struct nubus_functional_resource *fres,
struct nubus_dir *dir);

/* These work on any directory gotten via the above */
--
2.13.6