| /* |
| The all defines and part of code (such as cs461x_*) are |
| contributed from ALSA 0.5.8 sources. |
| See http://www.alsa-project.org/ for sources |
| |
| Tested on Linux 686 2.4.0-test9, ALSA 0.5.8a and CS4610 |
| */ |
| |
| #include <asm/io.h> |
| |
| #include <linux/module.h> |
| #include <linux/ioport.h> |
| #include <linux/config.h> |
| #include <linux/init.h> |
| #include <linux/gameport.h> |
| #include <linux/slab.h> |
| #include <linux/pci.h> |
| |
| MODULE_AUTHOR("Victor Krapivin"); |
| MODULE_LICENSE("GPL"); |
| |
| /* |
| These options are experimental |
| |
| #define CS461X_FULL_MAP |
| */ |
| |
| |
| #ifndef PCI_VENDOR_ID_CIRRUS |
| #define PCI_VENDOR_ID_CIRRUS 0x1013 |
| #endif |
| #ifndef PCI_DEVICE_ID_CIRRUS_4610 |
| #define PCI_DEVICE_ID_CIRRUS_4610 0x6001 |
| #endif |
| #ifndef PCI_DEVICE_ID_CIRRUS_4612 |
| #define PCI_DEVICE_ID_CIRRUS_4612 0x6003 |
| #endif |
| #ifndef PCI_DEVICE_ID_CIRRUS_4615 |
| #define PCI_DEVICE_ID_CIRRUS_4615 0x6004 |
| #endif |
| |
| /* Registers */ |
| |
| #define BA0_JSPT 0x00000480 |
| #define BA0_JSCTL 0x00000484 |
| #define BA0_JSC1 0x00000488 |
| #define BA0_JSC2 0x0000048C |
| #define BA0_JSIO 0x000004A0 |
| |
| /* Bits for JSPT */ |
| |
| #define JSPT_CAX 0x00000001 |
| #define JSPT_CAY 0x00000002 |
| #define JSPT_CBX 0x00000004 |
| #define JSPT_CBY 0x00000008 |
| #define JSPT_BA1 0x00000010 |
| #define JSPT_BA2 0x00000020 |
| #define JSPT_BB1 0x00000040 |
| #define JSPT_BB2 0x00000080 |
| |
| /* Bits for JSCTL */ |
| |
| #define JSCTL_SP_MASK 0x00000003 |
| #define JSCTL_SP_SLOW 0x00000000 |
| #define JSCTL_SP_MEDIUM_SLOW 0x00000001 |
| #define JSCTL_SP_MEDIUM_FAST 0x00000002 |
| #define JSCTL_SP_FAST 0x00000003 |
| #define JSCTL_ARE 0x00000004 |
| |
| /* Data register pairs masks */ |
| |
| #define JSC1_Y1V_MASK 0x0000FFFF |
| #define JSC1_X1V_MASK 0xFFFF0000 |
| #define JSC1_Y1V_SHIFT 0 |
| #define JSC1_X1V_SHIFT 16 |
| #define JSC2_Y2V_MASK 0x0000FFFF |
| #define JSC2_X2V_MASK 0xFFFF0000 |
| #define JSC2_Y2V_SHIFT 0 |
| #define JSC2_X2V_SHIFT 16 |
| |
| /* JS GPIO */ |
| |
| #define JSIO_DAX 0x00000001 |
| #define JSIO_DAY 0x00000002 |
| #define JSIO_DBX 0x00000004 |
| #define JSIO_DBY 0x00000008 |
| #define JSIO_AXOE 0x00000010 |
| #define JSIO_AYOE 0x00000020 |
| #define JSIO_BXOE 0x00000040 |
| #define JSIO_BYOE 0x00000080 |
| |
| /* |
| The card initialization code is obfuscated; the module cs461x |
| need to be loaded after ALSA modules initialized and something |
| played on the CS 4610 chip (see sources for details of CS4610 |
| initialization code from ALSA) |
| */ |
| |
| /* Card specific definitions */ |
| |
| #define CS461X_BA0_SIZE 0x2000 |
| #define CS461X_BA1_DATA0_SIZE 0x3000 |
| #define CS461X_BA1_DATA1_SIZE 0x3800 |
| #define CS461X_BA1_PRG_SIZE 0x7000 |
| #define CS461X_BA1_REG_SIZE 0x0100 |
| |
| #define BA1_SP_DMEM0 0x00000000 |
| #define BA1_SP_DMEM1 0x00010000 |
| #define BA1_SP_PMEM 0x00020000 |
| #define BA1_SP_REG 0x00030000 |
| |
| #define BA1_DWORD_SIZE (13 * 1024 + 512) |
| #define BA1_MEMORY_COUNT 3 |
| |
| /* |
| Only one CS461x card is still suppoted; the code requires |
| redesign to avoid this limitatuion. |
| */ |
| |
| static unsigned long ba0_addr; |
| static unsigned int __iomem *ba0; |
| |
| #ifdef CS461X_FULL_MAP |
| static unsigned long ba1_addr; |
| static union ba1_t { |
| struct { |
| unsigned int __iomem *data0; |
| unsigned int __iomem *data1; |
| unsigned int __iomem *pmem; |
| unsigned int __iomem *reg; |
| } name; |
| unsigned int __iomem *idx[4]; |
| } ba1; |
| |
| static void cs461x_poke(unsigned long reg, unsigned int val) |
| { |
| writel(val, &ba1.idx[(reg >> 16) & 3][(reg >> 2) & 0x3fff]); |
| } |
| |
| static unsigned int cs461x_peek(unsigned long reg) |
| { |
| return readl(&ba1.idx[(reg >> 16) & 3][(reg >> 2) & 0x3fff]); |
| } |
| |
| #endif |
| |
| static void cs461x_pokeBA0(unsigned long reg, unsigned int val) |
| { |
| writel(val, &ba0[reg >> 2]); |
| } |
| |
| static unsigned int cs461x_peekBA0(unsigned long reg) |
| { |
| return readl(&ba0[reg >> 2]); |
| } |
| |
| static int cs461x_free(struct pci_dev *pdev) |
| { |
| struct gameport *port = pci_get_drvdata(pdev); |
| |
| if (port) |
| gameport_unregister_port(port); |
| |
| if (ba0) iounmap(ba0); |
| #ifdef CS461X_FULL_MAP |
| if (ba1.name.data0) iounmap(ba1.name.data0); |
| if (ba1.name.data1) iounmap(ba1.name.data1); |
| if (ba1.name.pmem) iounmap(ba1.name.pmem); |
| if (ba1.name.reg) iounmap(ba1.name.reg); |
| #endif |
| return 0; |
| } |
| |
| static void cs461x_gameport_trigger(struct gameport *gameport) |
| { |
| cs461x_pokeBA0(BA0_JSPT, 0xFF); //outb(gameport->io, 0xFF); |
| } |
| |
| static unsigned char cs461x_gameport_read(struct gameport *gameport) |
| { |
| return cs461x_peekBA0(BA0_JSPT); //inb(gameport->io); |
| } |
| |
| static int cs461x_gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons) |
| { |
| unsigned js1, js2, jst; |
| |
| js1 = cs461x_peekBA0(BA0_JSC1); |
| js2 = cs461x_peekBA0(BA0_JSC2); |
| jst = cs461x_peekBA0(BA0_JSPT); |
| |
| *buttons = (~jst >> 4) & 0x0F; |
| |
| axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF; |
| axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF; |
| axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF; |
| axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF; |
| |
| for(jst=0;jst<4;++jst) |
| if(axes[jst]==0xFFFF) axes[jst] = -1; |
| return 0; |
| } |
| |
| static int cs461x_gameport_open(struct gameport *gameport, int mode) |
| { |
| switch (mode) { |
| case GAMEPORT_MODE_COOKED: |
| case GAMEPORT_MODE_RAW: |
| return 0; |
| default: |
| return -1; |
| } |
| return 0; |
| } |
| |
| static struct pci_device_id cs461x_pci_tbl[] = { |
| { PCI_VENDOR_ID_CIRRUS, 0x6001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Cirrus CS4610 */ |
| { PCI_VENDOR_ID_CIRRUS, 0x6003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Cirrus CS4612 */ |
| { PCI_VENDOR_ID_CIRRUS, 0x6005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Cirrus CS4615 */ |
| { 0, } |
| }; |
| MODULE_DEVICE_TABLE(pci, cs461x_pci_tbl); |
| |
| static int __devinit cs461x_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| int rc; |
| struct gameport* port; |
| |
| rc = pci_enable_device(pdev); |
| if (rc) { |
| printk(KERN_ERR "cs461x: Cannot enable PCI gameport (bus %d, devfn %d) error=%d\n", |
| pdev->bus->number, pdev->devfn, rc); |
| return rc; |
| } |
| |
| ba0_addr = pci_resource_start(pdev, 0); |
| #ifdef CS461X_FULL_MAP |
| ba1_addr = pci_resource_start(pdev, 1); |
| #endif |
| if (ba0_addr == 0 || ba0_addr == ~0 |
| #ifdef CS461X_FULL_MAP |
| || ba1_addr == 0 || ba1_addr == ~0 |
| #endif |
| ) { |
| printk(KERN_ERR "cs461x: wrong address - ba0 = 0x%lx\n", ba0_addr); |
| #ifdef CS461X_FULL_MAP |
| printk(KERN_ERR "cs461x: wrong address - ba1 = 0x%lx\n", ba1_addr); |
| #endif |
| cs461x_free(pdev); |
| return -ENOMEM; |
| } |
| |
| ba0 = ioremap(ba0_addr, CS461X_BA0_SIZE); |
| #ifdef CS461X_FULL_MAP |
| ba1.name.data0 = ioremap(ba1_addr + BA1_SP_DMEM0, CS461X_BA1_DATA0_SIZE); |
| ba1.name.data1 = ioremap(ba1_addr + BA1_SP_DMEM1, CS461X_BA1_DATA1_SIZE); |
| ba1.name.pmem = ioremap(ba1_addr + BA1_SP_PMEM, CS461X_BA1_PRG_SIZE); |
| ba1.name.reg = ioremap(ba1_addr + BA1_SP_REG, CS461X_BA1_REG_SIZE); |
| |
| if (ba0 == NULL || ba1.name.data0 == NULL || |
| ba1.name.data1 == NULL || ba1.name.pmem == NULL || |
| ba1.name.reg == NULL) { |
| cs461x_free(pdev); |
| return -ENOMEM; |
| } |
| #else |
| if (ba0 == NULL) { |
| cs461x_free(pdev); |
| return -ENOMEM; |
| } |
| #endif |
| |
| if (!(port = gameport_allocate_port())) { |
| printk(KERN_ERR "cs461x: Memory allocation failed\n"); |
| cs461x_free(pdev); |
| return -ENOMEM; |
| } |
| |
| pci_set_drvdata(pdev, port); |
| |
| port->open = cs461x_gameport_open; |
| port->trigger = cs461x_gameport_trigger; |
| port->read = cs461x_gameport_read; |
| port->cooked_read = cs461x_gameport_cooked_read; |
| |
| gameport_set_name(port, "CS416x"); |
| gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev)); |
| port->dev.parent = &pdev->dev; |
| |
| cs461x_pokeBA0(BA0_JSIO, 0xFF); // ? |
| cs461x_pokeBA0(BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW); |
| |
| gameport_register_port(port); |
| |
| return 0; |
| } |
| |
| static void __devexit cs461x_pci_remove(struct pci_dev *pdev) |
| { |
| cs461x_free(pdev); |
| } |
| |
| static struct pci_driver cs461x_pci_driver = { |
| .name = "CS461x_gameport", |
| .id_table = cs461x_pci_tbl, |
| .probe = cs461x_pci_probe, |
| .remove = __devexit_p(cs461x_pci_remove), |
| }; |
| |
| static int __init cs461x_init(void) |
| { |
| return pci_register_driver(&cs461x_pci_driver); |
| } |
| |
| static void __exit cs461x_exit(void) |
| { |
| pci_unregister_driver(&cs461x_pci_driver); |
| } |
| |
| module_init(cs461x_init); |
| module_exit(cs461x_exit); |
| |
