/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ALPHA_WILDFIRE__H__
#define __ALPHA_WILDFIRE__H__

#include <linux/types.h>
#include <asm/compiler.h>

#define WILDFIRE_MAX_QBB        8       /* more than 8 requires other mods */
#define WILDFIRE_PCA_PER_QBB    4
#define WILDFIRE_IRQ_PER_PCA    64

#define WILDFIRE_NR_IRQS \
  (WILDFIRE_MAX_QBB * WILDFIRE_PCA_PER_QBB * WILDFIRE_IRQ_PER_PCA)

extern unsigned char wildfire_hard_qbb_map[WILDFIRE_MAX_QBB];
extern unsigned char wildfire_soft_qbb_map[WILDFIRE_MAX_QBB];
#define QBB_MAP_EMPTY   0xff

extern unsigned long wildfire_hard_qbb_mask;
extern unsigned long wildfire_soft_qbb_mask;
extern unsigned long wildfire_gp_mask;
extern unsigned long wildfire_hs_mask;
extern unsigned long wildfire_iop_mask;
extern unsigned long wildfire_ior_mask;
extern unsigned long wildfire_pca_mask;
extern unsigned long wildfire_cpu_mask;
extern unsigned long wildfire_mem_mask;

#define WILDFIRE_QBB_EXISTS(qbbno) (wildfire_soft_qbb_mask & (1 << (qbbno)))

#define WILDFIRE_MEM_EXISTS(qbbno) (wildfire_mem_mask & (0xf << ((qbbno) << 2)))

#define WILDFIRE_PCA_EXISTS(qbbno, pcano) \
                (wildfire_pca_mask & (1 << (((qbbno) << 2) + (pcano))))

typedef struct {
        volatile unsigned long csr __attribute__((aligned(64)));
} wildfire_64;

typedef struct {
        volatile unsigned long csr __attribute__((aligned(256)));
} wildfire_256;

typedef struct {
        volatile unsigned long csr __attribute__((aligned(2048)));
} wildfire_2k;

typedef struct {
        wildfire_64     qsd_whami;
        wildfire_64     qsd_rev;
        wildfire_64     qsd_port_present;
        wildfire_64     qsd_port_active;
        wildfire_64     qsd_fault_ena;
        wildfire_64     qsd_cpu_int_ena;
        wildfire_64     qsd_mem_config;
        wildfire_64     qsd_err_sum;
        wildfire_64     ce_sum[4];
        wildfire_64     dev_init[4];
        wildfire_64     it_int[4];
        wildfire_64     ip_int[4];
        wildfire_64     uce_sum[4];
        wildfire_64     se_sum__non_dev_int[4];
        wildfire_64     scratch[4];
        wildfire_64     qsd_timer;
        wildfire_64     qsd_diag;
} wildfire_qsd;

typedef struct {
        wildfire_256    qsd_whami;
        wildfire_256    __pad1;
        wildfire_256    ce_sum;
        wildfire_256    dev_init;
        wildfire_256    it_int;
        wildfire_256    ip_int;
        wildfire_256    uce_sum;
        wildfire_256    se_sum;
} wildfire_fast_qsd;

typedef struct {
        wildfire_2k     qsa_qbb_id;
        wildfire_2k     __pad1;
        wildfire_2k     qsa_port_ena;
        wildfire_2k     qsa_scratch;
        wildfire_2k     qsa_config[5];
        wildfire_2k     qsa_ref_int;
        wildfire_2k     qsa_qbb_pop[2];
        wildfire_2k     qsa_dtag_fc;
        wildfire_2k     __pad2[3];
        wildfire_2k     qsa_diag;
        wildfire_2k     qsa_diag_lock[4];
        wildfire_2k     __pad3[11];
        wildfire_2k     qsa_cpu_err_sum;
        wildfire_2k     qsa_misc_err_sum;
        wildfire_2k     qsa_tmo_err_sum;
        wildfire_2k     qsa_err_ena;
        wildfire_2k     qsa_tmo_config;
        wildfire_2k     qsa_ill_cmd_err_sum;
        wildfire_2k     __pad4[26];
        wildfire_2k     qsa_busy_mask;
        wildfire_2k     qsa_arr_valid;
        wildfire_2k     __pad5[2];
        wildfire_2k     qsa_port_map[4];
        wildfire_2k     qsa_arr_addr[8];
        wildfire_2k     qsa_arr_mask[8];
} wildfire_qsa;

typedef struct {
        wildfire_64     ioa_config;
        wildfire_64     iod_config;
        wildfire_64     iop_switch_credits;
        wildfire_64     __pad1;
        wildfire_64     iop_hose_credits;
        wildfire_64     __pad2[11];
        struct {
                wildfire_64     __pad3;
                wildfire_64     init;
        } iop_hose[4];
        wildfire_64     ioa_hose_0_ctrl;
        wildfire_64     iod_hose_0_ctrl;
        wildfire_64     ioa_hose_1_ctrl;
        wildfire_64     iod_hose_1_ctrl;
        wildfire_64     ioa_hose_2_ctrl;
        wildfire_64     iod_hose_2_ctrl;
        wildfire_64     ioa_hose_3_ctrl;
        wildfire_64     iod_hose_3_ctrl;
        struct {
                wildfire_64     target;
                wildfire_64     __pad4;
        } iop_dev_int[4];

        wildfire_64     iop_err_int_target;
        wildfire_64     __pad5[7];
        wildfire_64     iop_qbb_err_sum;
        wildfire_64     __pad6;
        wildfire_64     iop_qbb_se_sum;
        wildfire_64     __pad7;
        wildfire_64     ioa_err_sum;
        wildfire_64     iod_err_sum;
        wildfire_64     __pad8[4];
        wildfire_64     ioa_diag_force_err;
        wildfire_64     iod_diag_force_err;
        wildfire_64     __pad9[4];
        wildfire_64     iop_diag_send_err_int;
        wildfire_64     __pad10[15];
        wildfire_64     ioa_scratch;
        wildfire_64     iod_scratch;
} wildfire_iop;

typedef struct {
        wildfire_2k     gpa_qbb_map[4];
        wildfire_2k     gpa_mem_pop_map;
        wildfire_2k     gpa_scratch;
        wildfire_2k     gpa_diag;
        wildfire_2k     gpa_config_0;
        wildfire_2k     __pad1;
        wildfire_2k     gpa_init_id;
        wildfire_2k     gpa_config_2;
        /* not complete */
} wildfire_gp;

typedef struct {
        wildfire_64     pca_what_am_i;
        wildfire_64     pca_err_sum;
        wildfire_64     pca_diag_force_err;
        wildfire_64     pca_diag_send_err_int;
        wildfire_64     pca_hose_credits;
        wildfire_64     pca_scratch;
        wildfire_64     pca_micro_addr;
        wildfire_64     pca_micro_data;
        wildfire_64     pca_pend_int;
        wildfire_64     pca_sent_int;
        wildfire_64     __pad1;
        wildfire_64     pca_stdio_edge_level;
        wildfire_64     __pad2[52];
        struct {
                wildfire_64     target;
                wildfire_64     enable;
        } pca_int[4];
        wildfire_64     __pad3[56];
        wildfire_64     pca_alt_sent_int[32];
} wildfire_pca;

typedef struct {
        wildfire_64     ne_what_am_i;
        /* not complete */
} wildfire_ne;

typedef struct {
        wildfire_64     fe_what_am_i;
        /* not complete */
} wildfire_fe;

typedef struct {
        wildfire_64     pci_io_addr_ext;
        wildfire_64     pci_ctrl;
        wildfire_64     pci_err_sum;
        wildfire_64     pci_err_addr;
        wildfire_64     pci_stall_cnt;
        wildfire_64     pci_iack_special;
        wildfire_64     __pad1[2];
        wildfire_64     pci_pend_int;
        wildfire_64     pci_sent_int;
        wildfire_64     __pad2[54];
        struct {
                wildfire_64     wbase;
                wildfire_64     wmask;
                wildfire_64     tbase;
        } pci_window[4];
        wildfire_64     pci_flush_tlb;
        wildfire_64     pci_perf_mon;
} wildfire_pci;

#define WILDFIRE_ENTITY_SHIFT           18

#define WILDFIRE_GP_ENTITY              (0x10UL << WILDFIRE_ENTITY_SHIFT)
#define WILDFIRE_IOP_ENTITY             (0x08UL << WILDFIRE_ENTITY_SHIFT)
#define WILDFIRE_QSA_ENTITY             (0x04UL << WILDFIRE_ENTITY_SHIFT)
#define WILDFIRE_QSD_ENTITY_SLOW        (0x05UL << WILDFIRE_ENTITY_SHIFT)
#define WILDFIRE_QSD_ENTITY_FAST        (0x01UL << WILDFIRE_ENTITY_SHIFT)

#define WILDFIRE_PCA_ENTITY(pca)        ((0xc|(pca))<<WILDFIRE_ENTITY_SHIFT)

#define WILDFIRE_BASE           (IDENT_ADDR | (1UL << 40))

#define WILDFIRE_QBB_MASK       0x0fUL  /* for now, only 4 bits/16 QBBs */

#define WILDFIRE_QBB(q)         ((~((long)(q)) & WILDFIRE_QBB_MASK) << 36)
#define WILDFIRE_HOSE(h)        ((long)(h) << 33)

#define WILDFIRE_QBB_IO(q)      (WILDFIRE_BASE | WILDFIRE_QBB(q))
#define WILDFIRE_QBB_HOSE(q,h)  (WILDFIRE_QBB_IO(q) | WILDFIRE_HOSE(h))

#define WILDFIRE_MEM(q,h)       (WILDFIRE_QBB_HOSE(q,h) | 0x000000000UL)
#define WILDFIRE_CONF(q,h)      (WILDFIRE_QBB_HOSE(q,h) | 0x1FE000000UL)
#define WILDFIRE_IO(q,h)        (WILDFIRE_QBB_HOSE(q,h) | 0x1FF000000UL)

#define WILDFIRE_qsd(q) \
 ((wildfire_qsd *)(WILDFIRE_QBB_IO(q)|WILDFIRE_QSD_ENTITY_SLOW|(((1UL<<13)-1)<<23)))

#define WILDFIRE_fast_qsd() \
 ((wildfire_fast_qsd *)(WILDFIRE_QBB_IO(0)|WILDFIRE_QSD_ENTITY_FAST|(((1UL<<13)-1)<<23)))

#define WILDFIRE_qsa(q) \
 ((wildfire_qsa *)(WILDFIRE_QBB_IO(q)|WILDFIRE_QSA_ENTITY|(((1UL<<13)-1)<<23)))

#define WILDFIRE_iop(q) \
 ((wildfire_iop *)(WILDFIRE_QBB_IO(q)|WILDFIRE_IOP_ENTITY|(((1UL<<13)-1)<<23)))

#define WILDFIRE_gp(q) \
 ((wildfire_gp *)(WILDFIRE_QBB_IO(q)|WILDFIRE_GP_ENTITY|(((1UL<<13)-1)<<23)))

#define WILDFIRE_pca(q,pca) \
 ((wildfire_pca *)(WILDFIRE_QBB_IO(q)|WILDFIRE_PCA_ENTITY(pca)|(((1UL<<13)-1)<<23)))

#define WILDFIRE_ne(q,pca) \
 ((wildfire_ne *)(WILDFIRE_QBB_IO(q)|WILDFIRE_PCA_ENTITY(pca)|(((1UL<<13)-1)<<23)|(1UL<<16)))

#define WILDFIRE_fe(q,pca) \
 ((wildfire_fe *)(WILDFIRE_QBB_IO(q)|WILDFIRE_PCA_ENTITY(pca)|(((1UL<<13)-1)<<23)|(3UL<<15)))

#define WILDFIRE_pci(q,h) \
 ((wildfire_pci *)(WILDFIRE_QBB_IO(q)|WILDFIRE_PCA_ENTITY(((h)&6)>>1)|((((h)&1)|2)<<16)|(((1UL<<13)-1)<<23)))

#define WILDFIRE_IO_BIAS        WILDFIRE_IO(0,0)
#define WILDFIRE_MEM_BIAS       WILDFIRE_MEM(0,0) /* ??? */

/* The IO address space is larger than 0xffff */
#define WILDFIRE_IO_SPACE       (8UL*1024*1024)

#ifdef __KERNEL__

#ifndef __EXTERN_INLINE
#define __EXTERN_INLINE extern inline
#define __IO_EXTERN_INLINE
#endif

/*
 * Memory functions.  all accesses are done through linear space.
 */

__EXTERN_INLINE void __iomem *wildfire_ioportmap(unsigned long addr)
{
        return (void __iomem *)(addr + WILDFIRE_IO_BIAS);
}

__EXTERN_INLINE void __iomem *wildfire_ioremap(unsigned long addr, 
                                               unsigned long size)
{
        return (void __iomem *)(addr + WILDFIRE_MEM_BIAS);
}

__EXTERN_INLINE int wildfire_is_ioaddr(unsigned long addr)
{
        return addr >= WILDFIRE_BASE;
}

__EXTERN_INLINE int wildfire_is_mmio(const volatile void __iomem *xaddr)
{
        unsigned long addr = (unsigned long)xaddr;
        return (addr & 0x100000000UL) == 0;
}

#undef __IO_PREFIX
#define __IO_PREFIX                     wildfire
#define wildfire_trivial_rw_bw          1
#define wildfire_trivial_rw_lq          1
#define wildfire_trivial_io_bw          1
#define wildfire_trivial_io_lq          1
#define wildfire_trivial_iounmap        1
#include <asm/io_trivial.h>

#ifdef __IO_EXTERN_INLINE
#undef __EXTERN_INLINE
#undef __IO_EXTERN_INLINE
#endif

#endif /* __KERNEL__ */

#endif /* __ALPHA_WILDFIRE__H__ */