qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
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rtas.c (2990B)

      1 /*
      2  * This work is licensed under the terms of the GNU GPL, version 2 or later.
      3  * See the COPYING file in the top-level directory.
      4  */
      5 
      6 #include "qemu/osdep.h"
      7 #include "../libqtest.h"
      8 #include "rtas.h"
      9 
     10 static void qrtas_copy_args(QTestState *qts, uint64_t target_args,
     11                             uint32_t nargs, uint32_t *args)
     12 {
     13     int i;
     14 
     15     for (i = 0; i < nargs; i++) {
     16         qtest_writel(qts, target_args + i * sizeof(uint32_t), args[i]);
     17     }
     18 }
     19 
     20 static void qrtas_copy_ret(QTestState *qts, uint64_t target_ret,
     21                            uint32_t nret, uint32_t *ret)
     22 {
     23     int i;
     24 
     25     for (i = 0; i < nret; i++) {
     26         ret[i] = qtest_readl(qts, target_ret + i * sizeof(uint32_t));
     27     }
     28 }
     29 
     30 static uint64_t qrtas_call(QTestState *qts, QGuestAllocator *alloc,
     31                            const char *name,
     32                            uint32_t nargs, uint32_t *args,
     33                            uint32_t nret, uint32_t *ret)
     34 {
     35     uint64_t res;
     36     uint64_t target_args, target_ret;
     37 
     38     target_args = guest_alloc(alloc, nargs * sizeof(uint32_t));
     39     target_ret = guest_alloc(alloc, nret * sizeof(uint32_t));
     40 
     41     qrtas_copy_args(qts, target_args, nargs, args);
     42     res = qtest_rtas_call(qts, name, nargs, target_args, nret, target_ret);
     43     qrtas_copy_ret(qts, target_ret, nret, ret);
     44 
     45     guest_free(alloc, target_ret);
     46     guest_free(alloc, target_args);
     47 
     48     return res;
     49 }
     50 
     51 int qrtas_get_time_of_day(QTestState *qts, QGuestAllocator *alloc,
     52                           struct tm *tm, uint32_t *ns)
     53 {
     54     int res;
     55     uint32_t ret[8];
     56 
     57     res = qrtas_call(qts, alloc, "get-time-of-day", 0, NULL, 8, ret);
     58     if (res != 0) {
     59         return res;
     60     }
     61 
     62     res = ret[0];
     63     memset(tm, 0, sizeof(*tm));
     64     tm->tm_year = ret[1] - 1900;
     65     tm->tm_mon = ret[2] - 1;
     66     tm->tm_mday = ret[3];
     67     tm->tm_hour = ret[4];
     68     tm->tm_min = ret[5];
     69     tm->tm_sec = ret[6];
     70     *ns = ret[7];
     71 
     72     return res;
     73 }
     74 
     75 uint32_t qrtas_ibm_read_pci_config(QTestState *qts, QGuestAllocator *alloc,
     76                                    uint64_t buid,
     77                                    uint32_t addr, uint32_t size)
     78 {
     79     int res;
     80     uint32_t args[4], ret[2];
     81 
     82     args[0] = addr;
     83     args[1] = buid >> 32;
     84     args[2] = buid & 0xffffffff;
     85     args[3] = size;
     86     res = qrtas_call(qts, alloc, "ibm,read-pci-config", 4, args, 2, ret);
     87     if (res != 0) {
     88         return -1;
     89     }
     90 
     91     if (ret[0] != 0) {
     92         return -1;
     93     }
     94 
     95     return ret[1];
     96 }
     97 
     98 int qrtas_ibm_write_pci_config(QTestState *qts, QGuestAllocator *alloc,
     99                                uint64_t buid,
    100                                uint32_t addr, uint32_t size, uint32_t val)
    101 {
    102     int res;
    103     uint32_t args[5], ret[1];
    104 
    105     args[0] = addr;
    106     args[1] = buid >> 32;
    107     args[2] = buid & 0xffffffff;
    108     args[3] = size;
    109     args[4] = val;
    110     res = qrtas_call(qts, alloc, "ibm,write-pci-config", 5, args, 1, ret);
    111     if (res != 0) {
    112         return -1;
    113     }
    114 
    115     if (ret[0] != 0) {
    116         return -1;
    117     }
    118 
    119     return 0;
    120 }