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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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- KNF'ify
- Prepend PSM_ to some defines to avoid any possible name-space problems - Use some already defined constants instead of magic #'s where appropriate. [ No functional changes (yet) ]
This commit is contained in:
Nate Williams
parent
65fe4a53c3
commit
aaf73493e8
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=15660
@ -63,9 +63,9 @@
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#include <i386/isa/isa_device.h>
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#define DATA 0 /* Offset for data port, read-write */
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#define CNTRL 4 /* Offset for control port, write-only */
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#define STATUS 4 /* Offset for status port, read-only */
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#define PSM_DATA 0x00 /* Offset for data port, read-write */
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#define PSM_CNTRL 0x04 /* Offset for control port, write-only */
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#define PSM_STATUS 0x04 /* Offset for status port, read-only */
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/* status bits */
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#define PSM_OUTPUT_ACK 0x02 /* output acknowledge */
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@ -93,8 +93,8 @@
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#define min(x,y) (x < y ? x : y)
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#endif min
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static int psmprobe (struct isa_device *);
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static int psmattach (struct isa_device *);
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static int psmprobe(struct isa_device *);
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static int psmattach(struct isa_device *);
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static void psm_poll_status(void);
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static int psmaddr[NPSM]; /* Base I/O port addresses per unit */
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@ -119,8 +119,8 @@ static struct psm_softc { /* Driver status information */
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#endif
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} psm_softc[NPSM];
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#define OPEN 1 /* Device is open */
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#define ASLP 2 /* Waiting for mouse data */
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#define PSM_OPEN 1 /* Device is open */
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#define PSM_ASLP 2 /* Waiting for mouse data */
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struct isa_driver psmdriver = { psmprobe, psmattach, "psm" };
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@ -138,44 +138,46 @@ static struct cdevsw psm_cdevsw =
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#define AUX_PORT 0x60 /* AUX_PORT base (S.Yuen) */
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static void psm_write_dev(int inport, u_char value)
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static void
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psm_write_dev(int ioport, u_char value)
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{
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psm_poll_status();
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outb(inport+CNTRL, 0xd4);
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outb(inport+PSM_CNTRL, 0xd4);
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psm_poll_status();
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outb(inport+DATA,value);
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outb(inport+PSM_DATA,value);
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}
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static inline void psm_command(int ioport, u_char value)
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static inline void
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psm_command(int ioport, u_char value)
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{
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psm_poll_status();
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outb(ioport+CNTRL, 0x60);
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outb(ioport+PSM_CNTRL, 0x60);
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psm_poll_status();
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outb(ioport+DATA, value);
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outb(ioport+PSM_DATA, value);
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}
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static int
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psmprobe(struct isa_device *dvp)
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{
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/* XXX: Needs a real probe routine. */
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int ioport,c,unit;
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int ioport, c, unit;
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ioport=dvp->id_iobase;
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unit=dvp->id_unit;
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#ifndef PSM_NO_RESET
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psm_write_dev(ioport,0xff); /* Reset aux device */
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psm_write_dev(ioport, PSM_RESET); /* Reset aux device */
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psm_poll_status();
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#endif
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outb(ioport+CNTRL,0xa9);
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outb(ioport+PSM_CNTRL,0xa9);
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psm_poll_status();
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outb(ioport+CNTRL,0xaa);
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c = inb(ioport+DATA);
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if(c&0x04) {
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outb(ioport+PSM_CNTRL,0xaa);
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c = inb(ioport+PSM_DATA);
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if(c & 0x04) {
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/* printf("PS/2 AUX mouse is not found\n");*/
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psm_command(ioport,0x65);
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psm_command(ioport, PSM_INT_DISABLE);
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psmaddr[unit] = 0; /* Device not found */
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return(0);}
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return (0);
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}
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/* printf("PS/2 AUX mouse found. Installing driver\n");*/
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return (4);
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}
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@ -188,13 +190,11 @@ psmattach(struct isa_device *dvp)
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struct psm_softc *sc = &psm_softc[unit];
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/* Save I/O base address */
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psmaddr[unit] = ioport;
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/* Disable mouse interrupts */
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psm_poll_status();
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outb(ioport+CNTRL, PSM_ENABLE);
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outb(ioport+PSM_CNTRL, PSM_ENABLE);
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#ifdef 0
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psm_write(ioport, PSM_SET_RES);
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psm_write(ioport, 0x03); /* 8 counts/mm */
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@ -206,47 +206,41 @@ psmattach(struct isa_device *dvp)
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psm_write(ioport, PSM_SET_STREAM);
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#endif
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psm_poll_status();
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outb(ioport+CNTRL, PSM_DISABLE);
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outb(ioport+PSM_CNTRL, PSM_DISABLE);
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psm_command(ioport, PSM_INT_DISABLE);
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/* Setup initial state */
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sc->state = 0;
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/* Done */
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return(0); /* XXX eh? usually 1 indicates success */
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return (0); /* XXX eh? usually 1 indicates success */
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}
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static int
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psmopen(dev_t dev, int flag, int fmt, struct proc *p)
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{
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int unit = PSMUNIT(dev);
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struct psm_softc *sc;
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int ioport;
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int unit = PSMUNIT(dev);
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/* Validate unit number */
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if (unit >= NPSM)
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return(ENXIO);
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return (ENXIO);
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/* Get device data */
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sc = &psm_softc[unit];
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ioport = psmaddr[unit];
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/* If device does not exist */
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if (ioport == 0)
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return(ENXIO);
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return (ENXIO);
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/* Disallow multiple opens */
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if (sc->state & OPEN)
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return(EBUSY);
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if (sc->state & PSM_OPEN)
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return (EBUSY);
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/* Initialize state */
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sc->state |= OPEN;
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sc->state |= PSM_OPEN;
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sc->rsel.si_flags = 0;
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sc->rsel.si_pid = 0;
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sc->status = 0;
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@ -255,15 +249,13 @@ psmopen(dev_t dev, int flag, int fmt, struct proc *p)
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sc->y = 0;
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/* Allocate and initialize a ring buffer */
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sc->inq.count = sc->inq.first = sc->inq.last = 0;
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/* Enable Bus Mouse interrupts */
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psm_write_dev(ioport, PSM_DEV_ENABLE);
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psm_poll_status();
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outb(ioport+CNTRL, PSM_ENABLE);
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outb(ioport+PSM_CNTRL, PSM_ENABLE);
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psm_command(ioport, PSM_INT_ENABLE);
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/* Successful open */
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@ -276,20 +268,19 @@ psmopen(dev_t dev, int flag, int fmt, struct proc *p)
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"npsm%d", unit);
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#endif
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return(0);
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return (0);
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}
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static void
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psm_poll_status(void)
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{
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while(inb(AUX_PORT+STATUS)&0x03) {
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if(inb(AUX_PORT+STATUS) & 0x2 == 0x2)
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inb(AUX_PORT+DATA);}
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while(inb(AUX_PORT+PSM_STATUS) & 0x03) {
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if(inb(AUX_PORT+PSM_STATUS) & 0x2 == 0x2)
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inb(AUX_PORT+PSM_DATA);}
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return;
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}
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static int
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psmclose(dev_t dev, int flag, int fmt, struct proc *p)
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{
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@ -297,27 +288,23 @@ psmclose(dev_t dev, int flag, int fmt, struct proc *p)
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struct psm_softc *sc;
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/* Get unit and associated info */
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unit = PSMUNIT(dev);
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sc = &psm_softc[unit];
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ioport = psmaddr[unit];
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/* Disable further mouse interrupts */
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psm_command(ioport,PSM_INT_DISABLE);
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psm_poll_status();
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outb(ioport+CNTRL,PSM_DISABLE );
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outb(ioport+PSM_CNTRL,PSM_DISABLE );
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/* Complete the close */
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sc->state &= ~OPEN;
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sc->state &= ~PSM_OPEN;
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/* close is almost always successful */
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return(0);
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return (0);
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}
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static int
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staticint
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psmread(dev_t dev, struct uio *uio, int flag)
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{
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int s;
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@ -337,25 +324,23 @@ psmread(dev_t dev, struct uio *uio, int flag)
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while (sc->inq.count == 0) {
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if (minor(dev) & 0x1) {
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splx(s);
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return(EWOULDBLOCK);
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return (EWOULDBLOCK);
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}
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sc->state |= ASLP;
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sc->state |= PSM_ASLP;
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error = tsleep((caddr_t)sc, PZERO | PCATCH, "psmrea", 0);
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if (error != 0) {
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splx(s);
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return(error);
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return (error);
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}
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}
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/* Transfer as many chunks as possible */
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while (sc->inq.count > 0 && uio->uio_resid > 0) {
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length = min(sc->inq.count, uio->uio_resid);
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if (length > sizeof(buffer))
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length = sizeof(buffer);
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/* Remove a small chunk from input queue */
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if (sc->inq.first + length >= MSBSZ) {
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bcopy(&sc->inq.queue[sc->inq.first],
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buffer, MSBSZ - sc->inq.first);
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@ -369,21 +354,18 @@ psmread(dev_t dev, struct uio *uio, int flag)
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sc->inq.count -= length;
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/* Copy data to user process */
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error = uiomove(buffer, length, uio);
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if (error)
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break;
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}
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sc->x = sc->y = 0;
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/* Allow interrupts again */
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splx(s);
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return(error);
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return (error);
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}
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static int
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staticint
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psmioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p)
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{
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struct psm_softc *sc;
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@ -391,27 +373,21 @@ psmioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p)
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int s, error;
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/* Get device information */
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sc = &psm_softc[PSMUNIT(dev)];
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/* Perform IOCTL command */
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switch (cmd) {
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case MOUSEIOCREAD:
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/* Don't modify info while calculating */
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s = spltty();
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/* Build mouse status octet */
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info.status = sc->status;
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if (sc->x || sc->y)
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info.status |= MOVEMENT;
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/* Encode X and Y motion as good as we can */
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if (sc->x > 127)
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info.xmotion = 127;
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else if (sc->x < -128)
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@ -427,13 +403,11 @@ psmioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p)
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info.ymotion = sc->y;
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/* Reset historical information */
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sc->x = 0;
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sc->y = 0;
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sc->status &= ~BUTCHNGMASK;
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/* Allow interrupts and copy result buffer */
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splx(s);
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error = copyout(&info, addr, sizeof(struct mouseinfo));
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break;
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@ -441,11 +415,10 @@ psmioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p)
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default:
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error = EINVAL;
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break;
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}
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}
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/* Return error code */
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return(error);
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return (error);
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}
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void psmintr(unit)
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@ -454,28 +427,26 @@ void psmintr(unit)
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struct psm_softc *sc = &psm_softc[unit];
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int ioport = psmaddr[unit];
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sc->inq.queue[sc->inq.last++ % MSBSZ] = inb(ioport+DATA);
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sc->inq.queue[sc->inq.last++ % MSBSZ] = inb(ioport+PSM_DATA);
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sc->inq.count++;
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if (sc -> state & ASLP) {
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sc->state &= ~ASLP;
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if (sc -> state & PSM_ASLP) {
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sc->state &= ~PSM_ASLP;
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wakeup((caddr_t)sc);
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}
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selwakeup(&sc->rsel);
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}
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static int
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static int
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psmselect(dev_t dev, int rw, struct proc *p)
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{
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int s, ret;
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struct psm_softc *sc = &psm_softc[PSMUNIT(dev)];
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/* Silly to select for output */
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if (rw == FWRITE)
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return(0);
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return (0);
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/* Return true if a mouse event available */
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s = spltty();
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if (sc->inq.count)
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ret = 1;
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@ -485,13 +456,14 @@ psmselect(dev_t dev, int rw, struct proc *p)
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}
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splx(s);
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return(ret);
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return (ret);
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}
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static psm_devsw_installed = 0;
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static void psm_drvinit(void *unused)
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static void
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(void *unused)
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{
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dev_t dev;
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@ -506,5 +478,3 @@ SYSINIT(psmdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,psm_drvinit,NULL)
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#endif
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