From: Sam Ravnborg <sam@xxxxxxxxxxxx>
LEON do not have floppy support so we can drop it
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxxxx>
Cc: Andreas Larsson <andreas@xxxxxxxxxxx>
---
arch/sparc/Kconfig | 2 +-
arch/sparc/include/asm/floppy.h | 2 -
arch/sparc/include/asm/floppy_32.h | 393 -------------------------------------
arch/sparc/kernel/entry.S | 137 -------------
arch/sparc/kernel/irq.h | 3 -
arch/sparc/kernel/irq_32.c | 93 ---------
arch/sparc/kernel/kernel.h | 2 -
7 files changed, 1 insertion(+), 631 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 49849790e66d..54c91431724b 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -195,7 +195,7 @@ config GENERIC_CALIBRATE_DELAY
config ARCH_MAY_HAVE_PC_FDC
bool
- default y
+ default y if SPARC64
config EMULATED_CMPXCHG
bool
diff --git a/arch/sparc/include/asm/floppy.h b/arch/sparc/include/asm/floppy.h
index 4b315802e635..c89f719a18e9 100644
--- a/arch/sparc/include/asm/floppy.h
+++ b/arch/sparc/include/asm/floppy.h
@@ -3,7 +3,5 @@
#define ___ASM_SPARC_FLOPPY_H
#if defined(__sparc__) && defined(__arch64__)
#include <asm/floppy_64.h>
-#else
-#include <asm/floppy_32.h>
#endif
#endif
diff --git a/arch/sparc/include/asm/floppy_32.h b/arch/sparc/include/asm/floppy_32.h
deleted file mode 100644
index 836f6575aa1d..000000000000
--- a/arch/sparc/include/asm/floppy_32.h
+++ /dev/null
@@ -1,393 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* asm/floppy.h: Sparc specific parts of the Floppy driver.
- *
- * Copyright (C) 1995 David S. Miller (davem@xxxxxxxxxxxxx)
- */
-
-#ifndef __ASM_SPARC_FLOPPY_H
-#define __ASM_SPARC_FLOPPY_H
-
-#include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/pgtable.h>
-
-#include <asm/idprom.h>
-#include <asm/oplib.h>
-#include <asm/auxio.h>
-#include <asm/setup.h>
-#include <asm/page.h>
-#include <asm/irq.h>
-
-/* We don't need no stinkin' I/O port allocation crap. */
-#undef release_region
-#undef request_region
-#define release_region(X, Y) do { } while(0)
-#define request_region(X, Y, Z) (1)
-
-/* References:
- * 1) Netbsd Sun floppy driver.
- * 2) NCR 82077 controller manual
- * 3) Intel 82077 controller manual
- */
-struct sun_flpy_controller {
- volatile unsigned char status_82072; /* Main Status reg. */
-#define dcr_82072 status_82072 /* Digital Control reg. */
-#define status1_82077 status_82072 /* Auxiliary Status reg. 1 */
-
- volatile unsigned char data_82072; /* Data fifo. */
-#define status2_82077 data_82072 /* Auxiliary Status reg. 2 */
-
- volatile unsigned char dor_82077; /* Digital Output reg. */
- volatile unsigned char tapectl_82077; /* What the? Tape control reg? */
-
- volatile unsigned char status_82077; /* Main Status Register. */
-#define drs_82077 status_82077 /* Digital Rate Select reg. */
-
- volatile unsigned char data_82077; /* Data fifo. */
- volatile unsigned char ___unused;
- volatile unsigned char dir_82077; /* Digital Input reg. */
-#define dcr_82077 dir_82077 /* Config Control reg. */
-};
-
-/* You'll only ever find one controller on a SparcStation anyways. */
-static struct sun_flpy_controller *sun_fdc = NULL;
-
-struct sun_floppy_ops {
- unsigned char (*fd_inb)(int port);
- void (*fd_outb)(unsigned char value, int port);
-};
-
-static struct sun_floppy_ops sun_fdops;
-
-#define fd_inb(base, reg) sun_fdops.fd_inb(reg)
-#define fd_outb(value, base, reg) sun_fdops.fd_outb(value, reg)
-#define fd_enable_dma() sun_fd_enable_dma()
-#define fd_disable_dma() sun_fd_disable_dma()
-#define fd_request_dma() (0) /* nothing... */
-#define fd_free_dma() /* nothing... */
-#define fd_clear_dma_ff() /* nothing... */
-#define fd_set_dma_mode(mode) sun_fd_set_dma_mode(mode)
-#define fd_set_dma_addr(addr) sun_fd_set_dma_addr(addr)
-#define fd_set_dma_count(count) sun_fd_set_dma_count(count)
-#define fd_enable_irq() /* nothing... */
-#define fd_disable_irq() /* nothing... */
-#define fd_request_irq() sun_fd_request_irq()
-#define fd_free_irq() /* nothing... */
-#if 0 /* P3: added by Alain, these cause a MMU corruption. 19960524 XXX */
-#define fd_dma_mem_alloc(size) ((unsigned long) vmalloc(size))
-#define fd_dma_mem_free(addr,size) (vfree((void *)(addr)))
-#endif
-
-/* XXX This isn't really correct. XXX */
-#define get_dma_residue(x) (0)
-
-#define FLOPPY0_TYPE 4
-#define FLOPPY1_TYPE 0
-
-/* Super paranoid... */
-#undef HAVE_DISABLE_HLT
-
-/* Here is where we catch the floppy driver trying to initialize,
- * therefore this is where we call the PROM device tree probing
- * routine etc. on the Sparc.
- */
-#define FDC1 sun_floppy_init()
-
-#define N_FDC 1
-#define N_DRIVE 8
-
-/* No 64k boundary crossing problems on the Sparc. */
-#define CROSS_64KB(a,s) (0)
-
-/* Routines unique to each controller type on a Sun. */
-static void sun_set_dor(unsigned char value, int fdc_82077)
-{
- if (fdc_82077)
- sun_fdc->dor_82077 = value;
-}
-
-static unsigned char sun_read_dir(void)
-{
- return sun_fdc->dir_82077;
-}
-
-static unsigned char sun_82072_fd_inb(int port)
-{
- udelay(5);
- switch (port) {
- default:
- printk("floppy: Asked to read unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_STATUS:
- return sun_fdc->status_82072 & ~STATUS_DMA;
- case FD_DATA:
- return sun_fdc->data_82072;
- case FD_DIR:
- return sun_read_dir();
- }
- panic("sun_82072_fd_inb: How did I get here?");
-}
-
-static void sun_82072_fd_outb(unsigned char value, int port)
-{
- udelay(5);
- switch (port) {
- default:
- printk("floppy: Asked to write to unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_DOR:
- sun_set_dor(value, 0);
- break;
- case FD_DATA:
- sun_fdc->data_82072 = value;
- break;
- case FD_DCR:
- sun_fdc->dcr_82072 = value;
- break;
- case FD_DSR:
- sun_fdc->status_82072 = value;
- break;
- }
- return;
-}
-
-static unsigned char sun_82077_fd_inb(int port)
-{
- udelay(5);
- switch (port) {
- default:
- printk("floppy: Asked to read unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_SRA:
- return sun_fdc->status1_82077;
- case FD_SRB:
- return sun_fdc->status2_82077;
- case FD_DOR:
- return sun_fdc->dor_82077;
- case FD_TDR:
- return sun_fdc->tapectl_82077;
- case FD_STATUS:
- return sun_fdc->status_82077 & ~STATUS_DMA;
- case FD_DATA:
- return sun_fdc->data_82077;
- case FD_DIR:
- return sun_read_dir();
- }
- panic("sun_82077_fd_inb: How did I get here?");
-}
-
-static void sun_82077_fd_outb(unsigned char value, int port)
-{
- udelay(5);
- switch (port) {
- default:
- printk("floppy: Asked to write to unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_DOR:
- sun_set_dor(value, 1);
- break;
- case FD_DATA:
- sun_fdc->data_82077 = value;
- break;
- case FD_DCR:
- sun_fdc->dcr_82077 = value;
- break;
- case FD_DSR:
- sun_fdc->status_82077 = value;
- break;
- case FD_TDR:
- sun_fdc->tapectl_82077 = value;
- break;
- }
- return;
-}
-
-/* For pseudo-dma (Sun floppy drives have no real DMA available to
- * them so we must eat the data fifo bytes directly ourselves) we have
- * three state variables. doing_pdma tells our inline low-level
- * assembly floppy interrupt entry point whether it should sit and eat
- * bytes from the fifo or just transfer control up to the higher level
- * floppy interrupt c-code. I tried very hard but I could not get the
- * pseudo-dma to work in c-code without getting many overruns and
- * underruns. If non-zero, doing_pdma encodes the direction of
- * the transfer for debugging. 1=read 2=write
- */
-
-/* Common routines to all controller types on the Sparc. */
-static inline void virtual_dma_init(void)
-{
- /* nothing... */
-}
-
-static inline void sun_fd_disable_dma(void)
-{
- doing_pdma = 0;
- pdma_base = NULL;
-}
-
-static inline void sun_fd_set_dma_mode(int mode)
-{
- switch(mode) {
- case DMA_MODE_READ:
- doing_pdma = 1;
- break;
- case DMA_MODE_WRITE:
- doing_pdma = 2;
- break;
- default:
- printk("Unknown dma mode %d\n", mode);
- panic("floppy: Giving up...");
- }
-}
-
-static inline void sun_fd_set_dma_addr(char *buffer)
-{
- pdma_vaddr = buffer;
-}
-
-static inline void sun_fd_set_dma_count(int length)
-{
- pdma_size = length;
-}
-
-static inline void sun_fd_enable_dma(void)
-{
- pdma_base = pdma_vaddr;
- pdma_areasize = pdma_size;
-}
-
-int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler);
-
-static int sun_fd_request_irq(void)
-{
- static int once = 0;
-
- if (!once) {
- once = 1;
- return sparc_floppy_request_irq(FLOPPY_IRQ, floppy_interrupt);
- } else {
- return 0;
- }
-}
-
-static struct linux_prom_registers fd_regs[2];
-
-static int sun_floppy_init(void)
-{
- struct platform_device *op;
- struct device_node *dp;
- struct resource r;
- char state[128];
- phandle fd_node;
- phandle tnode;
- int num_regs;
-
- use_virtual_dma = 1;
-
- /* Forget it if we aren't on a machine that could possibly
- * ever have a floppy drive.
- */
- if (sparc_cpu_model != sun4m) {
- /* We certainly don't have a floppy controller. */
- goto no_sun_fdc;
- }
- /* Well, try to find one. */
- tnode = prom_getchild(prom_root_node);
- fd_node = prom_searchsiblings(tnode, "obio");
- if (fd_node != 0) {
- tnode = prom_getchild(fd_node);
- fd_node = prom_searchsiblings(tnode, "SUNW,fdtwo");
- } else {
- fd_node = prom_searchsiblings(tnode, "fd");
- }
- if (fd_node == 0) {
- goto no_sun_fdc;
- }
-
- /* The sun4m lets us know if the controller is actually usable. */
- if (prom_getproperty(fd_node, "status", state, sizeof(state)) != -1) {
- if(!strcmp(state, "disabled")) {
- goto no_sun_fdc;
- }
- }
- num_regs = prom_getproperty(fd_node, "reg", (char *) fd_regs, sizeof(fd_regs));
- num_regs = (num_regs / sizeof(fd_regs[0]));
- prom_apply_obio_ranges(fd_regs, num_regs);
- memset(&r, 0, sizeof(r));
- r.flags = fd_regs[0].which_io;
- r.start = fd_regs[0].phys_addr;
- sun_fdc = of_ioremap(&r, 0, fd_regs[0].reg_size, "floppy");
-
- /* Look up irq in platform_device.
- * We try "SUNW,fdtwo" and "fd"
- */
- op = NULL;
- for_each_node_by_name(dp, "SUNW,fdtwo") {
- op = of_find_device_by_node(dp);
- if (op)
- break;
- }
- if (!op) {
- for_each_node_by_name(dp, "fd") {
- op = of_find_device_by_node(dp);
- if (op)
- break;
- }
- }
- if (!op)
- goto no_sun_fdc;
-
- FLOPPY_IRQ = op->archdata.irqs[0];
-
- /* Last minute sanity check... */
- if (sun_fdc->status_82072 == 0xff) {
- sun_fdc = NULL;
- goto no_sun_fdc;
- }
-
- sun_fdops.fd_inb = sun_82077_fd_inb;
- sun_fdops.fd_outb = sun_82077_fd_outb;
- fdc_status = &sun_fdc->status_82077;
-
- if (sun_fdc->dor_82077 == 0x80) {
- sun_fdc->dor_82077 = 0x02;
- if (sun_fdc->dor_82077 == 0x80) {
- sun_fdops.fd_inb = sun_82072_fd_inb;
- sun_fdops.fd_outb = sun_82072_fd_outb;
- fdc_status = &sun_fdc->status_82072;
- }
- }
-
- /* Success... */
- allowed_drive_mask = 0x01;
- return (int) sun_fdc;
-
-no_sun_fdc:
- return -1;
-}
-
-static int sparc_eject(void)
-{
- set_dor(0x00, 0xff, 0x90);
- udelay(500);
- set_dor(0x00, 0x6f, 0x00);
- udelay(500);
- return 0;
-}
-
-#define fd_eject(drive) sparc_eject()
-
-#define EXTRA_FLOPPY_PARAMS
-
-static DEFINE_SPINLOCK(dma_spin_lock);
-
-#define claim_dma_lock() \
-({ unsigned long flags; \
- spin_lock_irqsave(&dma_spin_lock, flags); \
- flags; \
-})
-
-#define release_dma_lock(__flags) \
- spin_unlock_irqrestore(&dma_spin_lock, __flags);
-
-#endif /* !(__ASM_SPARC_FLOPPY_H) */
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index a3fdee4cd6fa..c6a5cb949381 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -55,143 +55,6 @@ arch_kgdb_breakpoint:
.size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
#endif
-#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
- .align 4
- .globl floppy_hardint
-floppy_hardint:
- /*
- * This code cannot touch registers %l0 %l1 and %l2
- * because SAVE_ALL depends on their values. It depends
- * on %l3 also, but we regenerate it before a call.
- * Other registers are:
- * %l3 -- base address of fdc registers
- * %l4 -- pdma_vaddr
- * %l5 -- scratch for ld/st address
- * %l6 -- pdma_size
- * %l7 -- scratch [floppy byte, ld/st address, aux. data]
- */
-
- /* Do we have work to do? */
- sethi %hi(doing_pdma), %l7
- ld [%l7 + %lo(doing_pdma)], %l7
- cmp %l7, 0
- be floppy_dosoftint
- nop
-
- /* Load fdc register base */
- sethi %hi(fdc_status), %l3
- ld [%l3 + %lo(fdc_status)], %l3
-
- /* Setup register addresses */
- sethi %hi(pdma_vaddr), %l5 ! transfer buffer
- ld [%l5 + %lo(pdma_vaddr)], %l4
- sethi %hi(pdma_size), %l5 ! bytes to go
- ld [%l5 + %lo(pdma_size)], %l6
-next_byte:
- ldub [%l3], %l7
-
- andcc %l7, 0x80, %g0 ! Does fifo still have data
- bz floppy_fifo_emptied ! fifo has been emptied...
- andcc %l7, 0x20, %g0 ! in non-dma mode still?
- bz floppy_overrun ! nope, overrun
- andcc %l7, 0x40, %g0 ! 0=write 1=read
- bz floppy_write
- sub %l6, 0x1, %l6
-
- /* Ok, actually read this byte */
- ldub [%l3 + 1], %l7
- orcc %g0, %l6, %g0
- stb %l7, [%l4]
- bne next_byte
- add %l4, 0x1, %l4
-
- b floppy_tdone
- nop
-
-floppy_write:
- /* Ok, actually write this byte */
- ldub [%l4], %l7
- orcc %g0, %l6, %g0
- stb %l7, [%l3 + 1]
- bne next_byte
- add %l4, 0x1, %l4
-
- /* fall through... */
-floppy_tdone:
- sethi %hi(pdma_vaddr), %l5
- st %l4, [%l5 + %lo(pdma_vaddr)]
- sethi %hi(pdma_size), %l5
- st %l6, [%l5 + %lo(pdma_size)]
- /* Flip terminal count pin */
- set auxio_register, %l7
- ld [%l7], %l7
-
- ldub [%l7], %l5
-
- or %l5, 0xc2, %l5
- stb %l5, [%l7]
- andn %l5, 0x02, %l5
-
-2:
- /* Kill some time so the bits set */
- WRITE_PAUSE
- WRITE_PAUSE
-
- stb %l5, [%l7]
-
- /* Prevent recursion */
- sethi %hi(doing_pdma), %l7
- b floppy_dosoftint
- st %g0, [%l7 + %lo(doing_pdma)]
-
- /* We emptied the FIFO, but we haven't read everything
- * as of yet. Store the current transfer address and
- * bytes left to read so we can continue when the next
- * fast IRQ comes in.
- */
-floppy_fifo_emptied:
- sethi %hi(pdma_vaddr), %l5
- st %l4, [%l5 + %lo(pdma_vaddr)]
- sethi %hi(pdma_size), %l7
- st %l6, [%l7 + %lo(pdma_size)]
-
- /* Restore condition codes */
- wr %l0, 0x0, %psr
- WRITE_PAUSE
-
- jmp %l1
- rett %l2
-
-floppy_overrun:
- sethi %hi(pdma_vaddr), %l5
- st %l4, [%l5 + %lo(pdma_vaddr)]
- sethi %hi(pdma_size), %l5
- st %l6, [%l5 + %lo(pdma_size)]
- /* Prevent recursion */
- sethi %hi(doing_pdma), %l7
- st %g0, [%l7 + %lo(doing_pdma)]
-
- /* fall through... */
-floppy_dosoftint:
- rd %wim, %l3
- SAVE_ALL
-
- /* Set all IRQs off. */
- or %l0, PSR_PIL, %l4
- wr %l4, 0x0, %psr
- WRITE_PAUSE
- wr %l4, PSR_ET, %psr
- WRITE_PAUSE
-
- mov 11, %o0 ! floppy irq level (unused anyway)
- mov %g0, %o1 ! devid is not used in fast interrupts
- call sparc_floppy_irq
- add %sp, STACKFRAME_SZ, %o2 ! struct pt_regs *regs
-
- RESTORE_ALL
-
-#endif /* (CONFIG_BLK_DEV_FD) */
-
/* Bad trap handler */
.globl bad_trap_handler
bad_trap_handler:
diff --git a/arch/sparc/kernel/irq.h b/arch/sparc/kernel/irq.h
index b02026ad6e34..0d9b740725b4 100644
--- a/arch/sparc/kernel/irq.h
+++ b/arch/sparc/kernel/irq.h
@@ -83,9 +83,6 @@ void handler_irq(unsigned int pil, struct pt_regs *regs);
unsigned long leon_get_irqmask(unsigned int irq);
-/* irq_32.c */
-void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs);
-
/* sun4m_irq.c */
void sun4m_nmi(struct pt_regs *regs);
diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index e8452be5123b..510184c3aa17 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -235,99 +235,6 @@ void handler_irq(unsigned int pil, struct pt_regs *regs)
set_irq_regs(old_regs);
}
-#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
-static unsigned int floppy_irq;
-
-int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler)
-{
- unsigned int cpu_irq;
- int err;
-
-
- err = request_irq(irq, irq_handler, 0, "floppy", NULL);
- if (err)
- return -1;
-
- /* Save for later use in floppy interrupt handler */
- floppy_irq = irq;
-
- cpu_irq = (irq & (NR_IRQS - 1));
-
- /* Dork with trap table if we get this far. */
-#define INSTANTIATE(table) \
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_one = SPARC_RD_PSR_L0; \
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_two = \
- SPARC_BRANCH((unsigned long) floppy_hardint, \
- (unsigned long) &table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_two);\
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_three = SPARC_RD_WIM_L3; \
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_four = SPARC_NOP;
-
- INSTANTIATE(sparc_ttable)
-
-#if defined CONFIG_SMP
- if (sparc_cpu_model != sparc_leon) {
- struct tt_entry *trap_table;
-
- trap_table = &trapbase_cpu1;
- INSTANTIATE(trap_table)
- trap_table = &trapbase_cpu2;
- INSTANTIATE(trap_table)
- trap_table = &trapbase_cpu3;
- INSTANTIATE(trap_table)
- }
-#endif
-#undef INSTANTIATE
- /*
- * XXX Correct thing whould be to flush only I- and D-cache lines
- * which contain the handler in question. But as of time of the
- * writing we have no CPU-neutral interface to fine-grained flushes.
- */
- flush_cache_all();
- return 0;
-}
-EXPORT_SYMBOL(sparc_floppy_request_irq);
-
-/*
- * These variables are used to access state from the assembler
- * interrupt handler, floppy_hardint, so we cannot put these in
- * the floppy driver image because that would not work in the
- * modular case.
- */
-volatile unsigned char *fdc_status;
-EXPORT_SYMBOL(fdc_status);
-
-char *pdma_vaddr;
-EXPORT_SYMBOL(pdma_vaddr);
-
-unsigned long pdma_size;
-EXPORT_SYMBOL(pdma_size);
-
-volatile int doing_pdma;
-EXPORT_SYMBOL(doing_pdma);
-
-char *pdma_base;
-EXPORT_SYMBOL(pdma_base);
-
-unsigned long pdma_areasize;
-EXPORT_SYMBOL(pdma_areasize);
-
-/* Use the generic irq support to call floppy_interrupt
- * which was setup using request_irq() in sparc_floppy_request_irq().
- * We only have one floppy interrupt so we do not need to check
- * for additional handlers being wired up by irq_link()
- */
-void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct pt_regs *old_regs;
-
- old_regs = set_irq_regs(regs);
- irq_enter();
- generic_handle_irq(floppy_irq);
- irq_exit();
- set_irq_regs(old_regs);
-}
-#endif
-
/* djhr
* This could probably be made indirect too and assigned in the CPU
* bits of the code. That would be much nicer I think and would also
diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h
index 15da3c0597a5..ef5579496088 100644
--- a/arch/sparc/kernel/kernel.h
+++ b/arch/sparc/kernel/kernel.h
@@ -151,8 +151,6 @@ extern unsigned int real_irq_entry[];
extern unsigned int smp4d_ticker[];
extern unsigned int patchme_maybe_smp_msg[];
-void floppy_hardint(void);
-
/* trampoline_32.S */
extern unsigned long sun4m_cpu_startup;
extern unsigned long sun4d_cpu_startup;
--
2.34.1
